vendor/clang/clang-trunk-r321017

59 files changed, 2532 insertions, 1132 deletions

diff --git a/include/clang/Basic/AddressSpaces.h b/include/clang/Basic/AddressSpaces.h
index 95b9b9c7d0b31..6b0090813e9b4 100644
--- a/include/clang/Basic/AddressSpaces.h
+++ b/include/clang/Basic/AddressSpaces.h
@@ -16,25 +16,26 @@
 #ifndef LLVM_CLANG_BASIC_ADDRESSSPACES_H
 #define LLVM_CLANG_BASIC_ADDRESSSPACES_H
 
-namespace clang {
+#include <assert.h>
 
-namespace LangAS {
+namespace clang {
 
 /// \brief Defines the address space values used by the address space qualifier
 /// of QualType.
 ///
-enum ID {
+enum class LangAS : unsigned {
   // The default value 0 is the value used in QualType for the the situation
-  // where there is no address space qualifier. For most languages, this also
-  // corresponds to the situation where there is no address space qualifier in
-  // the source code, except for OpenCL, where the address space value 0 in
-  // QualType represents private address space in OpenCL source code.
+  // where there is no address space qualifier.
   Default = 0,
 
   // OpenCL specific address spaces.
+  // In OpenCL each l-value must have certain non-default address space, each
+  // r-value must have no address space (i.e. the default address space). The
+  // pointee of a pointer must have non-default address space.
   opencl_global,
   opencl_local,
   opencl_constant,
+  opencl_private,
   opencl_generic,
 
   // CUDA specific address spaces.
@@ -50,9 +51,24 @@ enum ID {
 
 /// The type of a lookup table which maps from language-specific address spaces
 /// to target-specific ones.
-typedef unsigned Map[FirstTargetAddressSpace];
+typedef unsigned LangASMap[(unsigned)LangAS::FirstTargetAddressSpace];
+
+/// \return whether \p AS is a target-specific address space rather than a
+/// clang AST address space
+inline bool isTargetAddressSpace(LangAS AS) {
+  return (unsigned)AS >= (unsigned)LangAS::FirstTargetAddressSpace;
 }
 
+inline unsigned toTargetAddressSpace(LangAS AS) {
+  assert(isTargetAddressSpace(AS));
+  return (unsigned)AS - (unsigned)LangAS::FirstTargetAddressSpace;
 }
 
+inline LangAS getLangASFromTargetAS(unsigned TargetAS) {
+  return static_cast<LangAS>((TargetAS) +
+                             (unsigned)LangAS::FirstTargetAddressSpace);
+}
+
+} // namespace clang
+
 #endif
diff --git a/include/clang/Basic/AlignedAllocation.h b/include/clang/Basic/AlignedAllocation.h
new file mode 100644
index 0000000000000..b3496949f39ac
--- /dev/null
+++ b/include/clang/Basic/AlignedAllocation.h
@@ -0,0 +1,44 @@
+//===--- AlignedAllocation.h - Aligned Allocation ---------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// \brief Defines a function that returns the minimum OS versions supporting
+/// C++17's aligned allocation functions.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_BASIC_ALIGNED_ALLOCATION_H
+#define LLVM_CLANG_BASIC_ALIGNED_ALLOCATION_H
+
+#include "clang/Basic/VersionTuple.h"
+#include "llvm/ADT/Triple.h"
+#include "llvm/Support/ErrorHandling.h"
+
+namespace clang {
+
+inline VersionTuple alignedAllocMinVersion(llvm::Triple::OSType OS) {
+  switch (OS) {
+  default:
+    break;
+  case llvm::Triple::Darwin:
+  case llvm::Triple::MacOSX: // Earliest supporting version is 10.13.
+    return VersionTuple(10U, 13U);
+  case llvm::Triple::IOS:
+  case llvm::Triple::TvOS: // Earliest supporting version is 11.0.0.
+    return VersionTuple(11U);
+  case llvm::Triple::WatchOS: // Earliest supporting version is 4.0.0.
+    return VersionTuple(4U);
+  }
+
+  llvm_unreachable("Unexpected OS");
+}
+
+} // end namespace clang
+
+#endif // LLVM_CLANG_BASIC_ALIGNED_ALLOCATION_H
diff --git a/include/clang/Basic/AllDiagnostics.h b/include/clang/Basic/AllDiagnostics.h
index fc861a1952a51..1c83e2d0f8a0b 100644
--- a/include/clang/Basic/AllDiagnostics.h
+++ b/include/clang/Basic/AllDiagnostics.h
@@ -18,12 +18,14 @@
 #include "clang/AST/ASTDiagnostic.h"
 #include "clang/AST/CommentDiagnostic.h"
 #include "clang/Analysis/AnalysisDiagnostic.h"
+#include "clang/CrossTU/CrossTUDiagnostic.h"
 #include "clang/Driver/DriverDiagnostic.h"
 #include "clang/Frontend/FrontendDiagnostic.h"
 #include "clang/Lex/LexDiagnostic.h"
 #include "clang/Parse/ParseDiagnostic.h"
 #include "clang/Sema/SemaDiagnostic.h"
 #include "clang/Serialization/SerializationDiagnostic.h"
+#include "clang/Tooling/Refactoring/RefactoringDiagnostic.h"
 
 namespace clang {
 template <size_t SizeOfStr, typename FieldType>
diff --git a/include/clang/Basic/Attr.td b/include/clang/Basic/Attr.td
index 5c69635b94924..d926fdde4eeed 100644
--- a/include/clang/Basic/Attr.td
+++ b/include/clang/Basic/Attr.td
@@ -69,44 +69,47 @@ include "clang/Basic/StmtNodes.td"
 //
 // The code fragment is a boolean expression that will confirm that the subject
 // meets the requirements; the subject will have the name S, and will have the
-// type specified by the base. It should be a simple boolean expression.
-class SubsetSubject<AttrSubject base, code check> : AttrSubject {
+// type specified by the base. It should be a simple boolean expression. The
+// diagnostic string should be a comma-separated list of subject names.
+class SubsetSubject<AttrSubject base, code check, string diag> : AttrSubject {
   AttrSubject Base = base;
   code CheckCode = check;
+  string DiagSpelling = diag;
 }
 
-// This is the type of a variable which C++11 allows alignas(...) to appertain
-// to.
-def NormalVar : SubsetSubject<Var,
-                              [{S->getStorageClass() != VarDecl::Register &&
-                                S->getKind() != Decl::ImplicitParam &&
-                                S->getKind() != Decl::ParmVar &&
-                                S->getKind() != Decl::NonTypeTemplateParm}]>;
+def LocalVar : SubsetSubject<Var,
+                              [{S->hasLocalStorage() && !isa<ParmVarDecl>(S)}],
+                              "local variables">;
 def NonParmVar : SubsetSubject<Var,
-                               [{S->getKind() != Decl::ParmVar}]>;
+                               [{S->getKind() != Decl::ParmVar}],
+                               "variables">;
 def NonBitField : SubsetSubject<Field,
-                                [{!S->isBitField()}]>;
+                                [{!S->isBitField()}],
+                                "non-bit-field non-static data members">;
 
 def ObjCInstanceMethod : SubsetSubject<ObjCMethod,
-                                       [{S->isInstanceMethod()}]>;
+                                       [{S->isInstanceMethod()}],
+                                       "Objective-C instance methods">;
 
 def ObjCInterfaceDeclInitMethod : SubsetSubject<ObjCMethod,
                                [{S->getMethodFamily() == OMF_init &&
                                  (isa<ObjCInterfaceDecl>(S->getDeclContext()) ||
                                   (isa<ObjCCategoryDecl>(S->getDeclContext()) &&
-            cast<ObjCCategoryDecl>(S->getDeclContext())->IsClassExtension()))}]>;
+            cast<ObjCCategoryDecl>(S->getDeclContext())->IsClassExtension()))}],
+            "init methods of interface or class extension declarations">;
 
 def Struct : SubsetSubject<Record,
-                           [{!S->isUnion()}]>;
+                           [{!S->isUnion()}], "structs">;
 
 def TLSVar : SubsetSubject<Var,
-                           [{S->getTLSKind() != 0}]>;
+                           [{S->getTLSKind() != 0}], "thread-local variables">;
 
 def SharedVar : SubsetSubject<Var,
-                              [{S->hasGlobalStorage() && !S->getTLSKind()}]>;
+                              [{S->hasGlobalStorage() && !S->getTLSKind()}],
+                              "global variables">;
 
 def GlobalVar : SubsetSubject<Var,
-                             [{S->hasGlobalStorage()}]>;
+                             [{S->hasGlobalStorage()}], "global variables">;
 
 // FIXME: this hack is needed because DeclNodes.td defines the base Decl node
 // type to be a class, not a definition. This makes it impossible to create an
@@ -115,11 +118,12 @@ def GlobalVar : SubsetSubject<Var,
 // the case of a SubsetSubject, there's no way to express it without this hack.
 def DeclBase : AttrSubject;
 def FunctionLike : SubsetSubject<DeclBase,
-                                  [{S->getFunctionType(false) != nullptr}]>;
+                                 [{S->getFunctionType(false) != nullptr}],
+                                 "functions, function pointers">;
 
-def OpenCLKernelFunction : SubsetSubject<Function, [{
-  S->hasAttr<OpenCLKernelAttr>()
-}]>;
+def OpenCLKernelFunction
+    : SubsetSubject<Function, [{S->hasAttr<OpenCLKernelAttr>()}],
+                    "kernel functions">;
 
 // HasFunctionProto is a more strict version of FunctionLike, so it should
 // never be specified in a Subjects list along with FunctionLike (due to the
@@ -128,7 +132,8 @@ def HasFunctionProto : SubsetSubject<DeclBase,
                                      [{(S->getFunctionType(true) != nullptr &&
                               isa<FunctionProtoType>(S->getFunctionType())) ||
                                        isa<ObjCMethodDecl>(S) ||
-                                       isa<BlockDecl>(S)}]>;
+                                       isa<BlockDecl>(S)}],
+                                     "non-K&R-style functions">;
 
 // A single argument to an attribute
 class Argument<string name, bit optional, bit fake = 0> {
@@ -210,18 +215,26 @@ class CXX11<string namespace, string name, int version = 1>
   string Namespace = namespace;
   int Version = version;
 }
+class C2x<string namespace, string name> : Spelling<name, "C2x"> {
+  string Namespace = namespace;
+}
+
 class Keyword<string name> : Spelling<name, "Keyword">;
 class Pragma<string namespace, string name> : Spelling<name, "Pragma"> {
   string Namespace = namespace;
 }
 
-// The GCC spelling implies GNU<name, "GNU"> and CXX11<"gnu", name> and also
-// sets KnownToGCC to 1. This spelling should be used for any GCC-compatible
+// The GCC spelling implies GNU<name> and CXX11<"gnu", name> and also sets
+// KnownToGCC to 1. This spelling should be used for any GCC-compatible
 // attributes.
 class GCC<string name> : Spelling<name, "GCC"> {
   let KnownToGCC = 1;
 }
 
+// The Clang spelling implies GNU<name> and CXX11<"clang", name>. This spelling
+// should be used for any Clang-specific attributes.
+class Clang<string name> : Spelling<name, "Clang">;
+
 class Accessor<string name, list<Spelling> spellings> {
   string Name = name;
   list<Spelling> Spellings = spellings;
@@ -264,14 +277,15 @@ class TargetArch<list<string> arches> {
 }
 def TargetARM : TargetArch<["arm", "thumb", "armeb", "thumbeb"]>;
 def TargetAVR : TargetArch<["avr"]>;
-def TargetMips : TargetArch<["mips", "mipsel"]>;
+def TargetMips32 : TargetArch<["mips", "mipsel"]>;
+def TargetAnyMips : TargetArch<["mips", "mipsel", "mips64", "mips64el"]>;
 def TargetMSP430 : TargetArch<["msp430"]>;
 def TargetX86 : TargetArch<["x86"]>;
 def TargetAnyX86 : TargetArch<["x86", "x86_64"]>;
-def TargetWindows : TargetArch<["x86", "x86_64", "arm", "thumb"]> {
+def TargetWindows : TargetArch<["x86", "x86_64", "arm", "thumb", "aarch64"]> {
   let OSes = ["Win32"];
 }
-def TargetMicrosoftCXXABI : TargetArch<["x86", "x86_64", "arm", "thumb"]> {
+def TargetMicrosoftCXXABI : TargetArch<["x86", "x86_64", "arm", "thumb", "aarch64"]> {
   let CXXABIs = ["Microsoft"];
 }
 
@@ -493,14 +507,13 @@ class IgnoredAttr : Attr {
 def AbiTag : Attr {
   let Spellings = [GCC<"abi_tag">];
   let Args = [VariadicStringArgument<"Tags">];
-  let Subjects = SubjectList<[Struct, Var, Function, Namespace], ErrorDiag,
-      "ExpectedStructClassVariableFunctionOrInlineNamespace">;
+  let Subjects = SubjectList<[Struct, Var, Function, Namespace], ErrorDiag>;
   let MeaningfulToClassTemplateDefinition = 1;
   let Documentation = [AbiTagsDocs];
 }
 
 def AddressSpace : TypeAttr {
-  let Spellings = [GNU<"address_space">];
+  let Spellings = [Clang<"address_space">];
   let Args = [IntArgument<"AddressSpace">];
   let Documentation = [Undocumented];
 }
@@ -508,15 +521,13 @@ def AddressSpace : TypeAttr {
 def Alias : Attr {
   let Spellings = [GCC<"alias">];
   let Args = [StringArgument<"Aliasee">];
-  let Subjects = SubjectList<[Function, GlobalVar], ErrorDiag,
-                             "ExpectedFunctionOrGlobalVar">;
+  let Subjects = SubjectList<[Function, GlobalVar], ErrorDiag>;
   let Documentation = [Undocumented];
 }
 
 def Aligned : InheritableAttr {
   let Spellings = [GCC<"aligned">, Declspec<"align">, Keyword<"alignas">,
                    Keyword<"_Alignas">];
-//  let Subjects = SubjectList<[NonBitField, NormalVar, Tag]>;
   let Args = [AlignedArgument<"Alignment", 1>];
   let Accessors = [Accessor<"isGNU", [GCC<"aligned">]>,
                    Accessor<"isC11", [Keyword<"_Alignas">]>,
@@ -534,13 +545,15 @@ def AlignValue : Attr {
     // the future (and a corresponding C++ attribute), but this can be done
     // later once we decide if we also want them to have slightly-different
     // semantics than Intel's align_value.
+    // 
+    // Does not get a [[]] spelling because the attribute is not exposed as such
+    // by Intel.
     GNU<"align_value">
     // Intel's compiler on Windows also supports:
     // , Declspec<"align_value">
   ];
   let Args = [ExprArgument<"Alignment">];
-  let Subjects = SubjectList<[Var, TypedefName], WarnDiag,
-                             "ExpectedVariableOrTypedef">;
+  let Subjects = SubjectList<[Var, TypedefName]>;
   let Documentation = [AlignValueDocs];
 }
 
@@ -558,44 +571,40 @@ def AlwaysInline : InheritableAttr {
 }
 
 def XRayInstrument : InheritableAttr {
-  let Spellings = [GNU<"xray_always_instrument">,
-                   CXX11<"clang", "xray_always_instrument">,
-                   GNU<"xray_never_instrument">,
-                   CXX11<"clang", "xray_never_instrument">];
-  let Subjects = SubjectList<[CXXMethod, ObjCMethod, Function], WarnDiag,
-                              "ExpectedFunctionOrMethod">;
+  let Spellings = [Clang<"xray_always_instrument">,
+                   Clang<"xray_never_instrument">];
+  let Subjects = SubjectList<[Function, ObjCMethod]>;
   let Accessors = [Accessor<"alwaysXRayInstrument",
-                     [GNU<"xray_always_instrument">,
-                      CXX11<"clang", "xray_always_instrument">]>,
+                     [Clang<"xray_always_instrument">]>,
                    Accessor<"neverXRayInstrument",
-                     [GNU<"xray_never_instrument">,
-                      CXX11<"clang", "xray_never_instrument">]>];
+                     [Clang<"xray_never_instrument">]>];
   let Documentation = [XRayDocs];
 }
 
 def XRayLogArgs : InheritableAttr {
-  let Spellings = [GNU<"xray_log_args">, CXX11<"clang", "xray_log_args">];
-  let Subjects = SubjectList<
-      [CXXMethod, ObjCMethod, Function], WarnDiag, "ExpectedFunctionOrMethod"
-  >;
+  let Spellings = [Clang<"xray_log_args">];
+  let Subjects = SubjectList<[Function, ObjCMethod]>;
   let Args = [UnsignedArgument<"ArgumentCount">];
   let Documentation = [XRayDocs];
 }
 
 def TLSModel : InheritableAttr {
   let Spellings = [GCC<"tls_model">];
-  let Subjects = SubjectList<[TLSVar], ErrorDiag, "ExpectedTLSVar">;
+  let Subjects = SubjectList<[TLSVar], ErrorDiag>;
   let Args = [StringArgument<"Model">];
   let Documentation = [TLSModelDocs];
 }
 
 def AnalyzerNoReturn : InheritableAttr {
+  // TODO: should this attribute be exposed with a [[]] spelling under the clang
+  // vendor namespace, or should it use a vendor namespace specific to the
+  // analyzer?
   let Spellings = [GNU<"analyzer_noreturn">];
   let Documentation = [Undocumented];
 }
 
 def Annotate : InheritableParamAttr {
-  let Spellings = [GNU<"annotate">];
+  let Spellings = [Clang<"annotate">];
   let Args = [StringArgument<"Annotation">];
   // Ensure that the annotate attribute can be used with
   // '#pragma clang attribute' even though it has no subject list.
@@ -606,7 +615,7 @@ def Annotate : InheritableParamAttr {
 def ARMInterrupt : InheritableAttr, TargetSpecificAttr<TargetARM> {
   // NOTE: If you add any additional spellings, MSP430Interrupt's,
   // MipsInterrupt's and AnyX86Interrupt's spellings must match.
-  let Spellings = [GNU<"interrupt">];
+  let Spellings = [GCC<"interrupt">];
   let Args = [EnumArgument<"Interrupt", "InterruptType",
                            ["IRQ", "FIQ", "SWI", "ABORT", "UNDEF", ""],
                            ["IRQ", "FIQ", "SWI", "ABORT", "UNDEF", "Generic"],
@@ -617,14 +626,14 @@ def ARMInterrupt : InheritableAttr, TargetSpecificAttr<TargetARM> {
 }
 
 def AVRInterrupt : InheritableAttr, TargetSpecificAttr<TargetAVR> {
-  let Spellings = [GNU<"interrupt">];
+  let Spellings = [GCC<"interrupt">];
   let Subjects = SubjectList<[Function]>;
   let ParseKind = "Interrupt";
   let Documentation = [AVRInterruptDocs];
 }
 
 def AVRSignal : InheritableAttr, TargetSpecificAttr<TargetAVR> {
-  let Spellings = [GNU<"signal">];
+  let Spellings = [GCC<"signal">];
   let Subjects = SubjectList<[Function]>;
   let Documentation = [AVRSignalDocs];
 }
@@ -637,6 +646,8 @@ def AsmLabel : InheritableAttr {
 }
 
 def Availability : InheritableAttr {
+  // TODO: does not have a [[]] spelling because it requires custom parsing
+  // support.
   let Spellings = [GNU<"availability">];
   let Args = [IdentifierArgument<"platform">, VersionArgument<"introduced">,
               VersionArgument<"deprecated">, VersionArgument<"obsoleted">,
@@ -687,8 +698,7 @@ static llvm::StringRef canonicalizePlatformName(llvm::StringRef Platform) {
 }
 
 def ExternalSourceSymbol : InheritableAttr {
-  let Spellings = [GNU<"external_source_symbol">,
-                   CXX11<"clang", "external_source_symbol">];
+  let Spellings = [Clang<"external_source_symbol">];
   let Args = [StringArgument<"language", 1>,
               StringArgument<"definedIn", 1>,
               BoolArgument<"generatedDeclaration", 1>];
@@ -698,12 +708,13 @@ def ExternalSourceSymbol : InheritableAttr {
 }
 
 def Blocks : InheritableAttr {
-  let Spellings = [GNU<"blocks">];
+  let Spellings = [Clang<"blocks">];
   let Args = [EnumArgument<"Type", "BlockType", ["byref"], ["ByRef"]>];
   let Documentation = [Undocumented];
 }
 
 def Bounded : IgnoredAttr {
+  // Does not have a [[]] spelling because the attribute is ignored.
   let Spellings = [GNU<"bounded">];
 }
 
@@ -725,7 +736,7 @@ def CDecl : InheritableAttr {
 // cf_returns_retained attributes.  It is generally applied by
 // '#pragma clang arc_cf_code_audited' rather than explicitly.
 def CFAuditedTransfer : InheritableAttr {
-  let Spellings = [GNU<"cf_audited_transfer">];
+  let Spellings = [Clang<"cf_audited_transfer">];
   let Subjects = SubjectList<[Function], ErrorDiag>;
   let Documentation = [Undocumented];
 }
@@ -734,25 +745,25 @@ def CFAuditedTransfer : InheritableAttr {
 // It indicates that the function has unknown or unautomatable
 // transfer semantics.
 def CFUnknownTransfer : InheritableAttr {
-  let Spellings = [GNU<"cf_unknown_transfer">];
+  let Spellings = [Clang<"cf_unknown_transfer">];
   let Subjects = SubjectList<[Function], ErrorDiag>;
   let Documentation = [Undocumented];
 }
 
 def CFReturnsRetained : InheritableAttr {
-  let Spellings = [GNU<"cf_returns_retained">];
+  let Spellings = [Clang<"cf_returns_retained">];
 //  let Subjects = SubjectList<[ObjCMethod, ObjCProperty, Function]>;
   let Documentation = [Undocumented];
 }
 
 def CFReturnsNotRetained : InheritableAttr {
-  let Spellings = [GNU<"cf_returns_not_retained">];
+  let Spellings = [Clang<"cf_returns_not_retained">];
 //  let Subjects = SubjectList<[ObjCMethod, ObjCProperty, Function]>;
   let Documentation = [Undocumented];
 }
 
 def CFConsumed : InheritableParamAttr {
-  let Spellings = [GNU<"cf_consumed">];
+  let Spellings = [Clang<"cf_consumed">];
   let Subjects = SubjectList<[ParmVar]>;
   let Documentation = [Undocumented];
 }
@@ -760,7 +771,7 @@ def CFConsumed : InheritableParamAttr {
 def Cleanup : InheritableAttr {
   let Spellings = [GCC<"cleanup">];
   let Args = [FunctionArgument<"FunctionDecl">];
-  let Subjects = SubjectList<[Var]>;
+  let Subjects = SubjectList<[LocalVar]>;
   let Documentation = [Undocumented];
 }
 
@@ -788,8 +799,8 @@ def Constructor : InheritableAttr {
   let Documentation = [Undocumented];
 }
 
-// CUDA attributes are spelled __attribute__((attr)) or __declspec(__attr__).
-
+// CUDA attributes are spelled __attribute__((attr)) or __declspec(__attr__),
+// and they do not receive a [[]] spelling.
 def CUDAConstant : InheritableAttr {
   let Spellings = [GNU<"constant">, Declspec<"__constant__">];
   let Subjects = SubjectList<[Var]>;
@@ -851,8 +862,7 @@ def CUDALaunchBounds : InheritableAttr {
   let Spellings = [GNU<"launch_bounds">, Declspec<"__launch_bounds__">];
   let Args = [ExprArgument<"MaxThreads">, ExprArgument<"MinBlocks", 1>];
   let LangOpts = [CUDA];
-  let Subjects = SubjectList<[ObjCMethod, FunctionLike], WarnDiag,
-                             "ExpectedFunctionOrMethod">;
+  let Subjects = SubjectList<[ObjCMethod, FunctionLike]>;
   // An AST node is created for this attribute, but is not used by other parts
   // of the compiler. However, this node needs to exist in the AST because
   // non-LLVM backends may be relying on the attribute's presence.
@@ -874,11 +884,13 @@ def C11NoReturn : InheritableAttr {
 }
 
 def CXX11NoReturn : InheritableAttr {
-  let Spellings = [CXX11<"","noreturn", 200809>];
+  let Spellings = [CXX11<"", "noreturn", 200809>];
   let Subjects = SubjectList<[Function], ErrorDiag>;
   let Documentation = [CXX11NoReturnDocs];
 }
 
+// Similar to CUDA, OpenCL attributes do not receive a [[]] spelling because
+// the specification does not expose them with one currently.
 def OpenCLKernel : InheritableAttr {
   let Spellings = [Keyword<"__kernel">, Keyword<"kernel">];
   let Subjects = SubjectList<[Function], ErrorDiag>;
@@ -904,8 +916,7 @@ def OpenCLAccess : Attr {
   let Spellings = [Keyword<"__read_only">, Keyword<"read_only">,
                    Keyword<"__write_only">, Keyword<"write_only">,
                    Keyword<"__read_write">, Keyword<"read_write">];
-  let Subjects = SubjectList<[ParmVar, TypedefName], ErrorDiag,
-                             "ExpectedParameterOrTypedef">;
+  let Subjects = SubjectList<[ParmVar, TypedefName], ErrorDiag>;
   let Accessors = [Accessor<"isReadOnly", [Keyword<"__read_only">,
                                            Keyword<"read_only">]>,
                    Accessor<"isReadWrite", [Keyword<"__read_write">,
@@ -957,7 +968,7 @@ def RenderScriptKernel : Attr {
 
 def Deprecated : InheritableAttr {
   let Spellings = [GCC<"deprecated">, Declspec<"deprecated">,
-                   CXX11<"","deprecated", 201309>];
+                   CXX11<"","deprecated", 201309>, C2x<"", "deprecated">];
   let Args = [StringArgument<"Message", 1>,
               // An optional string argument that enables us to provide a
               // Fix-It.
@@ -988,6 +999,9 @@ def AllocSize : InheritableAttr {
 }
 
 def EnableIf : InheritableAttr {
+  // Does not have a [[]] spelling because this attribute requires the ability
+  // to parse function arguments but the attribute is not written in the type
+  // position.
   let Spellings = [GNU<"enable_if">];
   let Subjects = SubjectList<[Function]>;
   let Args = [ExprArgument<"Cond">, StringArgument<"Message">];
@@ -996,6 +1010,7 @@ def EnableIf : InheritableAttr {
 }
 
 def ExtVectorType : Attr {
+  // This is an OpenCL-related attribute and does not receive a [[]] spelling.
   let Spellings = [GNU<"ext_vector_type">];
   let Subjects = SubjectList<[TypedefName], ErrorDiag>;
   let Args = [ExprArgument<"NumElements">];
@@ -1004,7 +1019,7 @@ def ExtVectorType : Attr {
 }
 
 def FallThrough : StmtAttr {
-  let Spellings = [CXX11<"", "fallthrough", 201603>,
+  let Spellings = [CXX11<"", "fallthrough", 201603>, C2x<"", "fallthrough">,
                    CXX11<"clang", "fallthrough">];
 //  let Subjects = [NullStmt];
   let Documentation = [FallthroughDocs];
@@ -1030,20 +1045,19 @@ def Final : InheritableAttr {
 }
 
 def MinSize : InheritableAttr {
-  let Spellings = [GNU<"minsize">];
+  let Spellings = [Clang<"minsize">];
   let Subjects = SubjectList<[Function, ObjCMethod], ErrorDiag>;
   let Documentation = [Undocumented];
 }
 
 def FlagEnum : InheritableAttr {
-  let Spellings = [GNU<"flag_enum">];
+  let Spellings = [Clang<"flag_enum">];
   let Subjects = SubjectList<[Enum]>;
   let Documentation = [FlagEnumDocs];
 }
 
 def EnumExtensibility : InheritableAttr {
-  let Spellings = [GNU<"enum_extensibility">,
-                   CXX11<"clang", "enum_extensibility">];
+  let Spellings = [Clang<"enum_extensibility">];
   let Subjects = SubjectList<[Enum]>;
   let Args = [EnumArgument<"Extensibility", "Kind",
               ["closed", "open"], ["Closed", "Open"]>];
@@ -1060,16 +1074,14 @@ def Format : InheritableAttr {
   let Spellings = [GCC<"format">];
   let Args = [IdentifierArgument<"Type">, IntArgument<"FormatIdx">,
               IntArgument<"FirstArg">];
-  let Subjects = SubjectList<[ObjCMethod, Block, HasFunctionProto], WarnDiag,
-                             "ExpectedFunctionWithProtoType">;
+  let Subjects = SubjectList<[ObjCMethod, Block, HasFunctionProto]>;
   let Documentation = [FormatDocs];
 }
 
 def FormatArg : InheritableAttr {
   let Spellings = [GCC<"format_arg">];
   let Args = [IntArgument<"FormatIdx">];
-  let Subjects = SubjectList<[ObjCMethod, HasFunctionProto], WarnDiag,
-                             "ExpectedFunctionWithProtoType">;
+  let Subjects = SubjectList<[ObjCMethod, HasFunctionProto]>;
   let Documentation = [Undocumented];
 }
 
@@ -1088,9 +1100,8 @@ def Hot : InheritableAttr {
 }
 
 def IBAction : InheritableAttr {
-  let Spellings = [GNU<"ibaction">];
-  let Subjects = SubjectList<[ObjCInstanceMethod], WarnDiag,
-                             "ExpectedObjCInstanceMethod">;
+  let Spellings = [Clang<"ibaction">];
+  let Subjects = SubjectList<[ObjCInstanceMethod]>;
   // An AST node is created for this attribute, but is not used by other parts
   // of the compiler. However, this node needs to exist in the AST because
   // external tools rely on it.
@@ -1098,13 +1109,13 @@ def IBAction : InheritableAttr {
 }
 
 def IBOutlet : InheritableAttr {
-  let Spellings = [GNU<"iboutlet">];
+  let Spellings = [Clang<"iboutlet">];
 //  let Subjects = [ObjCIvar, ObjCProperty];
   let Documentation = [Undocumented];
 }
 
 def IBOutletCollection : InheritableAttr {
-  let Spellings = [GNU<"iboutletcollection">];
+  let Spellings = [Clang<"iboutletcollection">];
   let Args = [TypeArgument<"Interface", 1>];
 //  let Subjects = [ObjCIvar, ObjCProperty];
   let Documentation = [Undocumented];
@@ -1153,23 +1164,23 @@ def MSABI : InheritableAttr {
 def MSP430Interrupt : InheritableAttr, TargetSpecificAttr<TargetMSP430> {
   // NOTE: If you add any additional spellings, ARMInterrupt's, MipsInterrupt's
   // and AnyX86Interrupt's spellings must match.
-  let Spellings = [GNU<"interrupt">];
+  let Spellings = [GCC<"interrupt">];
   let Args = [UnsignedArgument<"Number">];
   let ParseKind = "Interrupt";
   let HasCustomParsing = 1;
   let Documentation = [Undocumented];
 }
 
-def Mips16 : InheritableAttr, TargetSpecificAttr<TargetMips> {
+def Mips16 : InheritableAttr, TargetSpecificAttr<TargetMips32> {
   let Spellings = [GCC<"mips16">];
   let Subjects = SubjectList<[Function], ErrorDiag>;
   let Documentation = [Undocumented];
 }
 
-def MipsInterrupt : InheritableAttr, TargetSpecificAttr<TargetMips> {
+def MipsInterrupt : InheritableAttr, TargetSpecificAttr<TargetMips32> {
   // NOTE: If you add any additional spellings, ARMInterrupt's,
   // MSP430Interrupt's and AnyX86Interrupt's spellings must match.
-  let Spellings = [GNU<"interrupt">];
+  let Spellings = [GCC<"interrupt">];
   let Subjects = SubjectList<[Function]>;
   let Args = [EnumArgument<"Interrupt", "InterruptType",
                            ["vector=sw0", "vector=sw1", "vector=hw0",
@@ -1182,16 +1193,27 @@ def MipsInterrupt : InheritableAttr, TargetSpecificAttr<TargetMips> {
   let Documentation = [MipsInterruptDocs];
 }
 
-def MicroMips : InheritableAttr, TargetSpecificAttr<TargetMips> {
+def MicroMips : InheritableAttr, TargetSpecificAttr<TargetMips32> {
   let Spellings = [GCC<"micromips">];
   let Subjects = SubjectList<[Function], ErrorDiag>;
   let Documentation = [MicroMipsDocs];
 }
 
+def MipsLongCall : InheritableAttr, TargetSpecificAttr<TargetAnyMips> {
+  let Spellings = [GCC<"long_call">, GCC<"far">];
+  let Subjects = SubjectList<[Function]>;
+  let Documentation = [MipsLongCallStyleDocs];
+}
+
+def MipsShortCall : InheritableAttr, TargetSpecificAttr<TargetAnyMips> {
+  let Spellings = [GCC<"short_call">, GCC<"near">];
+  let Subjects = SubjectList<[Function]>;
+  let Documentation = [MipsShortCallStyleDocs];
+}
+
 def Mode : Attr {
   let Spellings = [GCC<"mode">];
-  let Subjects = SubjectList<[Var, Enum, TypedefName, Field], ErrorDiag,
-                             "ExpectedVariableEnumFieldOrTypedef">;
+  let Subjects = SubjectList<[Var, Enum, TypedefName, Field], ErrorDiag>;
   let Args = [IdentifierArgument<"Mode">];
   let Documentation = [Undocumented];
 }
@@ -1203,13 +1225,13 @@ def Naked : InheritableAttr {
 }
 
 def NeonPolyVectorType : TypeAttr {
-  let Spellings = [GNU<"neon_polyvector_type">];
+  let Spellings = [Clang<"neon_polyvector_type">];
   let Args = [IntArgument<"NumElements">];
   let Documentation = [Undocumented];
 }
 
 def NeonVectorType : TypeAttr {
-  let Spellings = [GNU<"neon_vector_type">];
+  let Spellings = [Clang<"neon_vector_type">];
   let Args = [IntArgument<"NumElements">];
   let Documentation = [Undocumented];
 }
@@ -1221,8 +1243,7 @@ def ReturnsTwice : InheritableAttr {
 }
 
 def DisableTailCalls : InheritableAttr {
-  let Spellings = [GNU<"disable_tail_calls">,
-                   CXX11<"clang", "disable_tail_calls">];
+  let Spellings = [Clang<"disable_tail_calls">];
   let Subjects = SubjectList<[Function, ObjCMethod]>;
   let Documentation = [DisableTailCallsDocs];
 }
@@ -1241,19 +1262,18 @@ def NoCommon : InheritableAttr {
 
 def NoDebug : InheritableAttr {
   let Spellings = [GCC<"nodebug">];
-  let Subjects = SubjectList<[FunctionLike, ObjCMethod, NonParmVar], WarnDiag,
-                              "ExpectedVariableOrFunction">;
+  let Subjects = SubjectList<[FunctionLike, ObjCMethod, NonParmVar]>;
   let Documentation = [NoDebugDocs];
 }
 
 def NoDuplicate : InheritableAttr {
-  let Spellings = [GNU<"noduplicate">, CXX11<"clang", "noduplicate">];
+  let Spellings = [Clang<"noduplicate">];
   let Subjects = SubjectList<[Function]>;
   let Documentation = [NoDuplicateDocs];
 }
 
 def Convergent : InheritableAttr {
-  let Spellings = [GNU<"convergent">, CXX11<"clang", "convergent">];
+  let Spellings = [Clang<"convergent">];
   let Subjects = SubjectList<[Function]>;
   let Documentation = [ConvergentDocs];
 }
@@ -1264,13 +1284,13 @@ def NoInline : InheritableAttr {
   let Documentation = [Undocumented];
 }
 
-def NoMips16 : InheritableAttr, TargetSpecificAttr<TargetMips> {
+def NoMips16 : InheritableAttr, TargetSpecificAttr<TargetMips32> {
   let Spellings = [GCC<"nomips16">];
   let Subjects = SubjectList<[Function], ErrorDiag>;
   let Documentation = [Undocumented];
 }
 
-def NoMicroMips : InheritableAttr, TargetSpecificAttr<TargetMips> {
+def NoMicroMips : InheritableAttr, TargetSpecificAttr<TargetMips32> {
   let Spellings = [GCC<"nomicromips">];
   let Subjects = SubjectList<[Function], ErrorDiag>;
   let Documentation = [MicroMipsDocs];
@@ -1294,31 +1314,31 @@ def NoMicroMips : InheritableAttr, TargetSpecificAttr<TargetMips> {
 // this should be rejected on non-kernels.
 
 def AMDGPUFlatWorkGroupSize : InheritableAttr {
-  let Spellings = [GNU<"amdgpu_flat_work_group_size">];
+  let Spellings = [Clang<"amdgpu_flat_work_group_size">];
   let Args = [UnsignedArgument<"Min">, UnsignedArgument<"Max">];
   let Documentation = [AMDGPUFlatWorkGroupSizeDocs];
-  let Subjects = SubjectList<[Function], ErrorDiag, "ExpectedKernelFunction">;
+  let Subjects = SubjectList<[Function], ErrorDiag, "kernel functions">;
 }
 
 def AMDGPUWavesPerEU : InheritableAttr {
-  let Spellings = [GNU<"amdgpu_waves_per_eu">];
+  let Spellings = [Clang<"amdgpu_waves_per_eu">];
   let Args = [UnsignedArgument<"Min">, UnsignedArgument<"Max", 1>];
   let Documentation = [AMDGPUWavesPerEUDocs];
-  let Subjects = SubjectList<[Function], ErrorDiag, "ExpectedKernelFunction">;
+  let Subjects = SubjectList<[Function], ErrorDiag, "kernel functions">;
 }
 
 def AMDGPUNumSGPR : InheritableAttr {
-  let Spellings = [GNU<"amdgpu_num_sgpr">];
+  let Spellings = [Clang<"amdgpu_num_sgpr">];
   let Args = [UnsignedArgument<"NumSGPR">];
   let Documentation = [AMDGPUNumSGPRNumVGPRDocs];
-  let Subjects = SubjectList<[Function], ErrorDiag, "ExpectedKernelFunction">;
+  let Subjects = SubjectList<[Function], ErrorDiag, "kernel functions">;
 }
 
 def AMDGPUNumVGPR : InheritableAttr {
-  let Spellings = [GNU<"amdgpu_num_vgpr">];
+  let Spellings = [Clang<"amdgpu_num_vgpr">];
   let Args = [UnsignedArgument<"NumVGPR">];
   let Documentation = [AMDGPUNumSGPRNumVGPRDocs];
-  let Subjects = SubjectList<[Function], ErrorDiag, "ExpectedKernelFunction">;
+  let Subjects = SubjectList<[Function], ErrorDiag, "kernel functions">;
 }
 
 def NoSplitStack : InheritableAttr {
@@ -1330,7 +1350,7 @@ def NoSplitStack : InheritableAttr {
 def NonNull : InheritableParamAttr {
   let Spellings = [GCC<"nonnull">];
   let Subjects = SubjectList<[ObjCMethod, HasFunctionProto, ParmVar], WarnDiag,
-                             "ExpectedFunctionMethodOrParameter">;
+                             "functions, methods, and parameters">;
   let Args = [VariadicUnsignedArgument<"Args">];
   let AdditionalMembers =
 [{bool isNonNull(unsigned idx) const {
@@ -1348,15 +1368,14 @@ def NonNull : InheritableParamAttr {
 
 def ReturnsNonNull : InheritableAttr {
   let Spellings = [GCC<"returns_nonnull">];
-  let Subjects = SubjectList<[ObjCMethod, Function], WarnDiag,
-                             "ExpectedFunctionOrMethod">;
+  let Subjects = SubjectList<[ObjCMethod, Function]>;
   let Documentation = [ReturnsNonNullDocs];
 }
 
 // pass_object_size(N) indicates that the parameter should have
 // __builtin_object_size with Type=N evaluated on the parameter at the callsite.
 def PassObjectSize : InheritableParamAttr {
-  let Spellings = [GNU<"pass_object_size">];
+  let Spellings = [Clang<"pass_object_size">];
   let Args = [IntArgument<"Type">];
   let Subjects = SubjectList<[ParmVar]>;
   let Documentation = [PassObjectSizeDocs];
@@ -1383,6 +1402,12 @@ def ObjCKindOf : TypeAttr {
   let Documentation = [Undocumented];
 }
 
+def NoEscape : Attr {
+  let Spellings = [Clang<"noescape">];
+  let Subjects = SubjectList<[ParmVar]>;
+  let Documentation = [NoEscapeDocs];
+}
+
 def AssumeAligned : InheritableAttr {
   let Spellings = [GCC<"assume_aligned">];
   let Subjects = SubjectList<[ObjCMethod, Function]>;
@@ -1392,8 +1417,7 @@ def AssumeAligned : InheritableAttr {
 
 def AllocAlign : InheritableAttr {
   let Spellings = [GCC<"alloc_align">];
-  let Subjects = SubjectList<[HasFunctionProto], WarnDiag,
-                             "ExpectedFunctionWithProtoType">;
+  let Subjects = SubjectList<[HasFunctionProto]>;
   let Args = [IntArgument<"ParamIndex">];
   let Documentation = [AllocAlignDocs];
 }
@@ -1411,39 +1435,42 @@ def NoInstrumentFunction : InheritableAttr {
 }
 
 def NotTailCalled : InheritableAttr {
-  let Spellings = [GNU<"not_tail_called">, CXX11<"clang", "not_tail_called">];
+  let Spellings = [Clang<"not_tail_called">];
   let Subjects = SubjectList<[Function]>;
   let Documentation = [NotTailCalledDocs];
 }
 
 def NoThrow : InheritableAttr {
   let Spellings = [GCC<"nothrow">, Declspec<"nothrow">];
-  let Documentation = [Undocumented];
+  let Subjects = SubjectList<[Function]>;
+  let Documentation = [NoThrowDocs];
 }
 
 def NvWeak : IgnoredAttr {
   // No Declspec spelling of this attribute; the CUDA headers use
-  // __attribute__((nv_weak)) unconditionally.
+  // __attribute__((nv_weak)) unconditionally. Does not receive an [[]]
+  // spelling because it is a CUDA attribute.
   let Spellings = [GNU<"nv_weak">];
   let LangOpts = [CUDA];
 }
 
 def ObjCBridge : InheritableAttr {
-  let Spellings = [GNU<"objc_bridge">];
-  let Subjects = SubjectList<[Record, TypedefName], ErrorDiag,
-                             "ExpectedStructOrUnionOrTypedef">;
+  let Spellings = [Clang<"objc_bridge">];
+  let Subjects = SubjectList<[Record, TypedefName], ErrorDiag>;
   let Args = [IdentifierArgument<"BridgedType">];
   let Documentation = [Undocumented];
 }
 
 def ObjCBridgeMutable : InheritableAttr {
-  let Spellings = [GNU<"objc_bridge_mutable">];
+  let Spellings = [Clang<"objc_bridge_mutable">];
   let Subjects = SubjectList<[Record], ErrorDiag>;
   let Args = [IdentifierArgument<"BridgedType">];
   let Documentation = [Undocumented];
 }
 
 def ObjCBridgeRelated : InheritableAttr {
+  // TODO: this attribute does not have a [[]] spelling because it requires
+  // custom parsing support.
   let Spellings = [GNU<"objc_bridge_related">];
   let Subjects = SubjectList<[Record], ErrorDiag>;
   let Args = [IdentifierArgument<"RelatedClass">,
@@ -1454,43 +1481,43 @@ def ObjCBridgeRelated : InheritableAttr {
 }
 
 def NSReturnsRetained : InheritableAttr {
-  let Spellings = [GNU<"ns_returns_retained">];
+  let Spellings = [Clang<"ns_returns_retained">];
 //  let Subjects = SubjectList<[ObjCMethod, ObjCProperty, Function]>;
   let Documentation = [Undocumented];
 }
 
 def NSReturnsNotRetained : InheritableAttr {
-  let Spellings = [GNU<"ns_returns_not_retained">];
+  let Spellings = [Clang<"ns_returns_not_retained">];
 //  let Subjects = SubjectList<[ObjCMethod, ObjCProperty, Function]>;
   let Documentation = [Undocumented];
 }
 
 def NSReturnsAutoreleased : InheritableAttr {
-  let Spellings = [GNU<"ns_returns_autoreleased">];
+  let Spellings = [Clang<"ns_returns_autoreleased">];
 //  let Subjects = SubjectList<[ObjCMethod, ObjCProperty, Function]>;
   let Documentation = [Undocumented];
 }
 
 def NSConsumesSelf : InheritableAttr {
-  let Spellings = [GNU<"ns_consumes_self">];
+  let Spellings = [Clang<"ns_consumes_self">];
   let Subjects = SubjectList<[ObjCMethod]>;
   let Documentation = [Undocumented];
 }
 
 def NSConsumed : InheritableParamAttr {
-  let Spellings = [GNU<"ns_consumed">];
+  let Spellings = [Clang<"ns_consumed">];
   let Subjects = SubjectList<[ParmVar]>;
   let Documentation = [Undocumented];
 }
 
 def ObjCException : InheritableAttr {
-  let Spellings = [GNU<"objc_exception">];
+  let Spellings = [Clang<"objc_exception">];
   let Subjects = SubjectList<[ObjCInterface], ErrorDiag>;
   let Documentation = [Undocumented];
 }
 
 def ObjCMethodFamily : InheritableAttr {
-  let Spellings = [GNU<"objc_method_family">];
+  let Spellings = [Clang<"objc_method_family">];
   let Subjects = SubjectList<[ObjCMethod], ErrorDiag>;
   let Args = [EnumArgument<"Family", "FamilyKind",
                ["none", "alloc", "copy", "init", "mutableCopy", "new"],
@@ -1500,85 +1527,84 @@ def ObjCMethodFamily : InheritableAttr {
 }
 
 def ObjCNSObject : InheritableAttr {
-  let Spellings = [GNU<"NSObject">];
+  let Spellings = [Clang<"NSObject">];
   let Documentation = [Undocumented];
 }
 
 def ObjCIndependentClass : InheritableAttr {
-  let Spellings = [GNU<"objc_independent_class">];
+  let Spellings = [Clang<"objc_independent_class">];
   let Documentation = [Undocumented];
 }
 
 def ObjCPreciseLifetime : InheritableAttr {
-  let Spellings = [GNU<"objc_precise_lifetime">];
+  let Spellings = [Clang<"objc_precise_lifetime">];
   let Subjects = SubjectList<[Var], ErrorDiag>;
   let Documentation = [Undocumented];
 }
 
 def ObjCReturnsInnerPointer : InheritableAttr {
-  let Spellings = [GNU<"objc_returns_inner_pointer">];
+  let Spellings = [Clang<"objc_returns_inner_pointer">];
   let Subjects = SubjectList<[ObjCMethod, ObjCProperty], ErrorDiag>;
   let Documentation = [Undocumented];
 }
 
 def ObjCRequiresSuper : InheritableAttr {
-  let Spellings = [GNU<"objc_requires_super">];
+  let Spellings = [Clang<"objc_requires_super">];
   let Subjects = SubjectList<[ObjCMethod], ErrorDiag>;
   let Documentation = [ObjCRequiresSuperDocs];
 }
 
 def ObjCRootClass : InheritableAttr {
-  let Spellings = [GNU<"objc_root_class">];
+  let Spellings = [Clang<"objc_root_class">];
   let Subjects = SubjectList<[ObjCInterface], ErrorDiag>;
   let Documentation = [Undocumented];
 }
 
 def ObjCSubclassingRestricted : InheritableAttr {
-  let Spellings = [GNU<"objc_subclassing_restricted">];
+  let Spellings = [Clang<"objc_subclassing_restricted">];
   let Subjects = SubjectList<[ObjCInterface], ErrorDiag>;
   let Documentation = [ObjCSubclassingRestrictedDocs];
 }
 
 def ObjCExplicitProtocolImpl : InheritableAttr {
-  let Spellings = [GNU<"objc_protocol_requires_explicit_implementation">];
+  let Spellings = [Clang<"objc_protocol_requires_explicit_implementation">];
   let Subjects = SubjectList<[ObjCProtocol], ErrorDiag>;
   let Documentation = [Undocumented];
 }
 
 def ObjCDesignatedInitializer : Attr {
-  let Spellings = [GNU<"objc_designated_initializer">];
-  let Subjects = SubjectList<[ObjCInterfaceDeclInitMethod], ErrorDiag,
-                             "ExpectedObjCInterfaceDeclInitMethod">;
+  let Spellings = [Clang<"objc_designated_initializer">];
+  let Subjects = SubjectList<[ObjCInterfaceDeclInitMethod], ErrorDiag>;
   let Documentation = [Undocumented];
 }
 
 def ObjCRuntimeName : Attr {
-  let Spellings = [GNU<"objc_runtime_name">];
+  let Spellings = [Clang<"objc_runtime_name">];
   let Subjects = SubjectList<[ObjCInterface, ObjCProtocol], ErrorDiag>;
   let Args = [StringArgument<"MetadataName">];
   let Documentation = [ObjCRuntimeNameDocs];
 }
 
 def ObjCRuntimeVisible : Attr {
-  let Spellings = [GNU<"objc_runtime_visible">];
+  let Spellings = [Clang<"objc_runtime_visible">];
   let Subjects = SubjectList<[ObjCInterface], ErrorDiag>;
   let Documentation = [ObjCRuntimeVisibleDocs];
 }
 
 def ObjCBoxable : Attr {
-  let Spellings = [GNU<"objc_boxable">];
-  let Subjects = SubjectList<[Record], ErrorDiag, "ExpectedStructOrUnion">;
+  let Spellings = [Clang<"objc_boxable">];
+  let Subjects = SubjectList<[Record], ErrorDiag>;
   let Documentation = [ObjCBoxableDocs];
 }
 
 def OptimizeNone : InheritableAttr {
-  let Spellings = [GNU<"optnone">, CXX11<"clang", "optnone">];
+  let Spellings = [Clang<"optnone">];
   let Subjects = SubjectList<[Function, ObjCMethod]>;
   let Documentation = [OptnoneDocs];
 }
 
 def Overloadable : Attr {
-  let Spellings = [GNU<"overloadable">];
+  let Spellings = [Clang<"overloadable">];
   let Subjects = SubjectList<[Function], ErrorDiag>;
   let Documentation = [OverloadableDocs];
 }
@@ -1590,11 +1616,11 @@ def Override : InheritableAttr {
 }
 
 def Ownership : InheritableAttr {
-  let Spellings = [GNU<"ownership_holds">, GNU<"ownership_returns">,
-                   GNU<"ownership_takes">];
-  let Accessors = [Accessor<"isHolds", [GNU<"ownership_holds">]>,
-                   Accessor<"isReturns", [GNU<"ownership_returns">]>,
-                   Accessor<"isTakes", [GNU<"ownership_takes">]>];
+  let Spellings = [Clang<"ownership_holds">, Clang<"ownership_returns">,
+                   Clang<"ownership_takes">];
+  let Accessors = [Accessor<"isHolds", [Clang<"ownership_holds">]>,
+                   Accessor<"isReturns", [Clang<"ownership_returns">]>,
+                   Accessor<"isTakes", [Clang<"ownership_takes">]>];
   let AdditionalMembers = [{
     enum OwnershipKind { Holds, Returns, Takes };
     OwnershipKind getOwnKind() const {
@@ -1604,8 +1630,7 @@ def Ownership : InheritableAttr {
     }
   }];
   let Args = [IdentifierArgument<"Module">, VariadicUnsignedArgument<"Args">];
-  let Subjects = SubjectList<[HasFunctionProto], WarnDiag,
-                             "ExpectedFunctionWithProtoType">;
+  let Subjects = SubjectList<[HasFunctionProto]>;
   let Documentation = [Undocumented];
 }
 
@@ -1616,7 +1641,7 @@ def Packed : InheritableAttr {
 }
 
 def IntelOclBicc : InheritableAttr {
-  let Spellings = [GNU<"intel_ocl_bicc">];
+  let Spellings = [Clang<"intel_ocl_bicc">];
 //  let Subjects = [Function, ObjCMethod];
   let Documentation = [Undocumented];
 }
@@ -1642,6 +1667,7 @@ def Regparm : TypeAttr {
 }
 
 def ReqdWorkGroupSize : InheritableAttr {
+  // Does not have a [[]] spelling because it is an OpenCL-related attribute.
   let Spellings = [GNU<"reqd_work_group_size">];
   let Args = [UnsignedArgument<"XDim">, UnsignedArgument<"YDim">,
               UnsignedArgument<"ZDim">];
@@ -1650,15 +1676,14 @@ def ReqdWorkGroupSize : InheritableAttr {
 }
 
 def RequireConstantInit : InheritableAttr {
-  let Spellings = [GNU<"require_constant_initialization">,
-                   CXX11<"clang", "require_constant_initialization">];
-  let Subjects = SubjectList<[GlobalVar], ErrorDiag,
-                              "ExpectedStaticOrTLSVar">;
+  let Spellings = [Clang<"require_constant_initialization">];
+  let Subjects = SubjectList<[GlobalVar], ErrorDiag>;
   let Documentation = [RequireConstantInitDocs];
   let LangOpts = [CPlusPlus];
 }
 
 def WorkGroupSizeHint :  InheritableAttr {
+  // Does not have a [[]] spelling because it is an OpenCL-related attribute.
   let Spellings = [GNU<"work_group_size_hint">];
   let Args = [UnsignedArgument<"XDim">, 
               UnsignedArgument<"YDim">,
@@ -1668,7 +1693,7 @@ def WorkGroupSizeHint :  InheritableAttr {
 }
 
 def InitPriority : InheritableAttr {
-  let Spellings = [GNU<"init_priority">];
+  let Spellings = [GCC<"init_priority">];
   let Args = [UnsignedArgument<"Priority">];
   let Subjects = SubjectList<[Var], ErrorDiag>;
   let Documentation = [Undocumented];
@@ -1677,9 +1702,8 @@ def InitPriority : InheritableAttr {
 def Section : InheritableAttr {
   let Spellings = [GCC<"section">, Declspec<"allocate">];
   let Args = [StringArgument<"Name">];
-  let Subjects = SubjectList<[Function, GlobalVar,
-                              ObjCMethod, ObjCProperty], ErrorDiag,
-                             "ExpectedFunctionGlobalVarMethodOrProperty">;
+  let Subjects =
+      SubjectList<[ Function, GlobalVar, ObjCMethod, ObjCProperty ], ErrorDiag>;
   let Documentation = [SectionDocs];
 }
 
@@ -1687,8 +1711,7 @@ def PragmaClangBSSSection : InheritableAttr {
   // This attribute has no spellings as it is only ever created implicitly.
   let Spellings = [];
   let Args = [StringArgument<"Name">];
-  let Subjects = SubjectList<[GlobalVar], ErrorDiag,
-                             "ExpectedFunctionMethodOrGlobalVar">;
+  let Subjects = SubjectList<[GlobalVar], ErrorDiag>;
   let Documentation = [Undocumented];
 }
 
@@ -1696,8 +1719,7 @@ def PragmaClangDataSection : InheritableAttr {
   // This attribute has no spellings as it is only ever created implicitly.
   let Spellings = [];
   let Args = [StringArgument<"Name">];
-  let Subjects = SubjectList<[GlobalVar], ErrorDiag,
-                             "ExpectedFunctionMethodOrGlobalVar">;
+  let Subjects = SubjectList<[GlobalVar], ErrorDiag>;
   let Documentation = [Undocumented];
 }
 
@@ -1705,8 +1727,7 @@ def PragmaClangRodataSection : InheritableAttr {
   // This attribute has no spellings as it is only ever created implicitly.
   let Spellings = [];
   let Args = [StringArgument<"Name">];
-  let Subjects = SubjectList<[GlobalVar], ErrorDiag,
-                             "ExpectedFunctionMethodOrGlobalVar">;
+  let Subjects = SubjectList<[GlobalVar], ErrorDiag>;
   let Documentation = [Undocumented];
 }
 
@@ -1714,8 +1735,7 @@ def PragmaClangTextSection : InheritableAttr {
   // This attribute has no spellings as it is only ever created implicitly.
   let Spellings = [];
   let Args = [StringArgument<"Name">];
-  let Subjects = SubjectList<[Function], ErrorDiag,
-                             "ExpectedFunctionMethodOrGlobalVar">;
+  let Subjects = SubjectList<[Function], ErrorDiag>;
   let Documentation = [Undocumented];
 }
 
@@ -1734,23 +1754,23 @@ def StdCall : InheritableAttr {
 }
 
 def SwiftCall : InheritableAttr {
-  let Spellings = [GCC<"swiftcall">];
+  let Spellings = [Clang<"swiftcall">];
 //  let Subjects = SubjectList<[Function]>;
   let Documentation = [SwiftCallDocs];
 }
 
 def SwiftContext : ParameterABIAttr {
-  let Spellings = [GCC<"swift_context">];
+  let Spellings = [Clang<"swift_context">];
   let Documentation = [SwiftContextDocs];
 }
 
 def SwiftErrorResult : ParameterABIAttr {
-  let Spellings = [GCC<"swift_error_result">];
+  let Spellings = [Clang<"swift_error_result">];
   let Documentation = [SwiftErrorResultDocs];
 }
 
 def SwiftIndirectResult : ParameterABIAttr {
-  let Spellings = [GCC<"swift_indirect_result">];
+  let Spellings = [Clang<"swift_indirect_result">];
   let Documentation = [SwiftIndirectResultDocs];
 }
 
@@ -1774,25 +1794,25 @@ def ThisCall : InheritableAttr {
 }
 
 def VectorCall : InheritableAttr {
-  let Spellings = [GNU<"vectorcall">, Keyword<"__vectorcall">,
+  let Spellings = [Clang<"vectorcall">, Keyword<"__vectorcall">,
                    Keyword<"_vectorcall">];
 //  let Subjects = [Function, ObjCMethod];
   let Documentation = [VectorCallDocs];
 }
 
 def Pascal : InheritableAttr {
-  let Spellings = [GNU<"pascal">, Keyword<"__pascal">, Keyword<"_pascal">];
+  let Spellings = [Clang<"pascal">, Keyword<"__pascal">, Keyword<"_pascal">];
 //  let Subjects = [Function, ObjCMethod];
   let Documentation = [Undocumented];
 }
 
 def PreserveMost : InheritableAttr {
-  let Spellings = [GNU<"preserve_most">];
+  let Spellings = [Clang<"preserve_most">];
   let Documentation = [PreserveMostDocs];
 }
 
 def PreserveAll : InheritableAttr {
-  let Spellings = [GNU<"preserve_all">];
+  let Spellings = [Clang<"preserve_all">];
   let Documentation = [PreserveAllDocs];
 }
 
@@ -1853,7 +1873,7 @@ def TransparentUnion : InheritableAttr {
 }
 
 def Unavailable : InheritableAttr {
-  let Spellings = [GNU<"unavailable">];
+  let Spellings = [Clang<"unavailable">];
   let Args = [StringArgument<"Message", 1>,
               EnumArgument<"ImplicitReason", "ImplicitReason",
                 ["", "", "", ""],
@@ -1867,6 +1887,9 @@ def Unavailable : InheritableAttr {
 }
 
 def DiagnoseIf : InheritableAttr {
+  // Does not have a [[]] spelling because this attribute requires the ability
+  // to parse function arguments but the attribute is not written in the type
+  // position.
   let Spellings = [GNU<"diagnose_if">];
   let Subjects = SubjectList<[Function, ObjCMethod, ObjCProperty]>;
   let Args = [ExprArgument<"Cond">, StringArgument<"Message">,
@@ -1887,35 +1910,35 @@ def DiagnoseIf : InheritableAttr {
 }
 
 def ArcWeakrefUnavailable : InheritableAttr {
-  let Spellings = [GNU<"objc_arc_weak_reference_unavailable">];
+  let Spellings = [Clang<"objc_arc_weak_reference_unavailable">];
   let Subjects = SubjectList<[ObjCInterface], ErrorDiag>;
   let Documentation = [Undocumented];
 }
 
 def ObjCGC : TypeAttr {
-  let Spellings = [GNU<"objc_gc">];
+  let Spellings = [Clang<"objc_gc">];
   let Args = [IdentifierArgument<"Kind">];
   let Documentation = [Undocumented];
 }
 
 def ObjCOwnership : InheritableAttr {
-  let Spellings = [GNU<"objc_ownership">];
+  let Spellings = [Clang<"objc_ownership">];
   let Args = [IdentifierArgument<"Kind">];
   let ASTNode = 0;
   let Documentation = [Undocumented];
 }
 
 def ObjCRequiresPropertyDefs : InheritableAttr {
-  let Spellings = [GNU<"objc_requires_property_definitions">];
+  let Spellings = [Clang<"objc_requires_property_definitions">];
   let Subjects = SubjectList<[ObjCInterface], ErrorDiag>;
   let Documentation = [Undocumented];
 }
 
 def Unused : InheritableAttr {
-  let Spellings = [CXX11<"", "maybe_unused", 201603>, GCC<"unused">];
+  let Spellings = [CXX11<"", "maybe_unused", 201603>, GCC<"unused">,
+                   C2x<"", "maybe_unused">];
   let Subjects = SubjectList<[Var, ObjCIvar, Type, Enum, EnumConstant, Label,
-                              Field, ObjCMethod, FunctionLike], WarnDiag,
-                             "ExpectedForMaybeUnused">;
+                              Field, ObjCMethod, FunctionLike]>;
   let Documentation = [WarnMaybeUnusedDocs];
 }
 
@@ -1927,7 +1950,7 @@ def Used : InheritableAttr {
 def Uuid : InheritableAttr {
   let Spellings = [Declspec<"uuid">, Microsoft<"uuid">];
   let Args = [StringArgument<"Guid">];
-  let Subjects = SubjectList<[Record, Enum], WarnDiag, "ExpectedEnumOrClass">;
+  let Subjects = SubjectList<[Record, Enum]>;
   // FIXME: Allow expressing logical AND for LangOpts. Our condition should be:
   // CPlusPlus && (MicrosoftExt || Borland)
   let LangOpts = [MicrosoftExt, Borland];
@@ -1941,6 +1964,7 @@ def VectorSize : TypeAttr {
 }
 
 def VecTypeHint : InheritableAttr {
+  // Does not have a [[]] spelling because it is an OpenCL-related attribute.
   let Spellings = [GNU<"vec_type_hint">];
   let Args = [TypeArgument<"TypeHint">];
   let Subjects = SubjectList<[Function], ErrorDiag>;
@@ -1959,7 +1983,7 @@ def Visibility : InheritableAttr {
 
 def TypeVisibility : InheritableAttr {
   let Clone = 0;
-  let Spellings = [GNU<"type_visibility">, CXX11<"clang", "type_visibility">];
+  let Spellings = [Clang<"type_visibility">];
   let Args = [EnumArgument<"Visibility", "VisibilityType",
                            ["default", "hidden", "internal", "protected"],
                            ["Default", "Hidden", "Hidden", "Protected"]>];
@@ -1968,23 +1992,22 @@ def TypeVisibility : InheritableAttr {
 }
 
 def VecReturn : InheritableAttr {
-  let Spellings = [GNU<"vecreturn">];
+  let Spellings = [Clang<"vecreturn">];
   let Subjects = SubjectList<[CXXRecord], ErrorDiag>;
   let Documentation = [Undocumented];
 }
 
 def WarnUnused : InheritableAttr {
-  let Spellings = [GNU<"warn_unused">];
+  let Spellings = [GCC<"warn_unused">];
   let Subjects = SubjectList<[Record]>;
   let Documentation = [Undocumented];
 }
 
 def WarnUnusedResult : InheritableAttr {
-  let Spellings = [CXX11<"", "nodiscard", 201603>,
+  let Spellings = [CXX11<"", "nodiscard", 201603>, C2x<"", "nodiscard">,
                    CXX11<"clang", "warn_unused_result">,
                    GCC<"warn_unused_result">];
-  let Subjects = SubjectList<[ObjCMethod, Enum, CXXRecord, FunctionLike],
-                             WarnDiag, "ExpectedFunctionMethodEnumOrClass">;
+  let Subjects = SubjectList<[ObjCMethod, Enum, Record, FunctionLike]>;
   let Documentation = [WarnUnusedResultsDocs];
 }
 
@@ -1995,7 +2018,7 @@ def Weak : InheritableAttr {
 }
 
 def WeakImport : InheritableAttr {
-  let Spellings = [GNU<"weak_import">];
+  let Spellings = [Clang<"weak_import">];
   let Documentation = [Undocumented];
 }
 
@@ -2008,7 +2031,7 @@ def WeakRef : InheritableAttr {
 }
 
 def LTOVisibilityPublic : InheritableAttr {
-  let Spellings = [CXX11<"clang", "lto_visibility_public">];
+  let Spellings = [Clang<"lto_visibility_public">];
   let Subjects = SubjectList<[Record]>;
   let Documentation = [LTOVisibilityDocs];
 }
@@ -2016,11 +2039,11 @@ def LTOVisibilityPublic : InheritableAttr {
 def AnyX86Interrupt : InheritableAttr, TargetSpecificAttr<TargetAnyX86> {
   // NOTE: If you add any additional spellings, ARMInterrupt's,
   // MSP430Interrupt's and MipsInterrupt's spellings must match.
-  let Spellings = [GNU<"interrupt">];
+  let Spellings = [GCC<"interrupt">];
   let Subjects = SubjectList<[HasFunctionProto]>;
   let ParseKind = "Interrupt";
   let HasCustomParsing = 1;
-  let Documentation = [AnyX86InterruptDocs];
+  let Documentation = [Undocumented];
 }
 
 def AnyX86NoCallerSavedRegisters : InheritableAttr,
@@ -2029,19 +2052,18 @@ def AnyX86NoCallerSavedRegisters : InheritableAttr,
   let Documentation = [AnyX86NoCallerSavedRegistersDocs];
 }
 
-def X86ForceAlignArgPointer : InheritableAttr, TargetSpecificAttr<TargetX86> {
-  let Spellings = [GNU<"force_align_arg_pointer">];
+def X86ForceAlignArgPointer : InheritableAttr, TargetSpecificAttr<TargetAnyX86> {
+  let Spellings = [GCC<"force_align_arg_pointer">];
   // Technically, this appertains to a FunctionDecl, but the target-specific
   // code silently allows anything function-like (such as typedefs or function
   // pointers), but does not apply the attribute to them.
-  let Documentation = [Undocumented];
+  let Documentation = [X86ForceAlignArgPointerDocs];
 }
 
 def NoSanitize : InheritableAttr {
-  let Spellings = [GNU<"no_sanitize">, CXX11<"clang", "no_sanitize">];
+  let Spellings = [Clang<"no_sanitize">];
   let Args = [VariadicStringArgument<"Sanitizers">];
-  let Subjects = SubjectList<[Function, ObjCMethod, GlobalVar], ErrorDiag,
-    "ExpectedFunctionMethodOrGlobalVar">;
+  let Subjects = SubjectList<[Function, ObjCMethod, GlobalVar], ErrorDiag>;
   let Documentation = [NoSanitizeDocs];
   let AdditionalMembers = [{
     SanitizerMask getMask() const {
@@ -2062,27 +2084,28 @@ def NoSanitizeSpecific : InheritableAttr {
   let Spellings = [GCC<"no_address_safety_analysis">,
                    GCC<"no_sanitize_address">,
                    GCC<"no_sanitize_thread">,
-                   GNU<"no_sanitize_memory">];
-  let Subjects = SubjectList<[Function, GlobalVar], ErrorDiag,
-        "ExpectedFunctionOrGlobalVar">;
+                   Clang<"no_sanitize_memory">];
+  let Subjects = SubjectList<[Function, GlobalVar], ErrorDiag>;
   let Documentation = [NoSanitizeAddressDocs, NoSanitizeThreadDocs,
                        NoSanitizeMemoryDocs];
   let ASTNode = 0;
 }
 
 // C/C++ Thread safety attributes (e.g. for deadlock, data race checking)
-
+// Not all of these attributes will be given a [[]] spelling. The attributes
+// which require access to function parameter names cannot use the [[]] spelling
+// because they are not written in the type position. Some attributes are given
+// an updated captability-based name and the older name will only be supported
+// under the GNU-style spelling.
 def GuardedVar : InheritableAttr {
-  let Spellings = [GNU<"guarded_var">];
-  let Subjects = SubjectList<[Field, SharedVar], WarnDiag,
-                             "ExpectedFieldOrGlobalVar">;
+  let Spellings = [Clang<"guarded_var">];
+  let Subjects = SubjectList<[Field, SharedVar]>;
   let Documentation = [Undocumented];
 }
 
 def PtGuardedVar : InheritableAttr {
-  let Spellings = [GNU<"pt_guarded_var">];
-  let Subjects = SubjectList<[Field, SharedVar], WarnDiag,
-                             "ExpectedFieldOrGlobalVar">;
+  let Spellings = [Clang<"pt_guarded_var">];
+  let Subjects = SubjectList<[Field, SharedVar]>;
   let Documentation = [Undocumented];
 }
 
@@ -2094,21 +2117,17 @@ def Lockable : InheritableAttr {
 }
 
 def ScopedLockable : InheritableAttr {
-  let Spellings = [GNU<"scoped_lockable">];
+  let Spellings = [Clang<"scoped_lockable">];
   let Subjects = SubjectList<[Record]>;
   let Documentation = [Undocumented];
 }
 
 def Capability : InheritableAttr {
-  let Spellings = [GNU<"capability">, CXX11<"clang", "capability">,
-                   GNU<"shared_capability">,
-                   CXX11<"clang", "shared_capability">];
-  let Subjects = SubjectList<[Record, TypedefName], ErrorDiag,
-                             "ExpectedStructOrUnionOrTypedef">;
+  let Spellings = [Clang<"capability">, Clang<"shared_capability">];
+  let Subjects = SubjectList<[Record, TypedefName], ErrorDiag>;
   let Args = [StringArgument<"Name">];
   let Accessors = [Accessor<"isShared",
-                    [GNU<"shared_capability">,
-                     CXX11<"clang","shared_capability">]>];
+                    [Clang<"shared_capability">]>];
   let Documentation = [Undocumented];
   let AdditionalMembers = [{
     bool isMutex() const { return getName().equals_lower("mutex"); }
@@ -2117,27 +2136,22 @@ def Capability : InheritableAttr {
 }
 
 def AssertCapability : InheritableAttr {
-  let Spellings = [GNU<"assert_capability">,
-                   CXX11<"clang", "assert_capability">,
-                   GNU<"assert_shared_capability">,
-                   CXX11<"clang", "assert_shared_capability">];
+  let Spellings = [Clang<"assert_capability">,
+                   Clang<"assert_shared_capability">];
   let Subjects = SubjectList<[Function]>;
   let LateParsed = 1;
   let TemplateDependent = 1;
   let ParseArgumentsAsUnevaluated = 1;
   let DuplicatesAllowedWhileMerging = 1;
-  let Args = [ExprArgument<"Expr">];
+  let Args = [VariadicExprArgument<"Args">];
   let Accessors = [Accessor<"isShared",
-                    [GNU<"assert_shared_capability">,
-                     CXX11<"clang", "assert_shared_capability">]>];
+                    [Clang<"assert_shared_capability">]>];
   let Documentation = [AssertCapabilityDocs];
 }
 
 def AcquireCapability : InheritableAttr {
-  let Spellings = [GNU<"acquire_capability">,
-                   CXX11<"clang", "acquire_capability">,
-                   GNU<"acquire_shared_capability">,
-                   CXX11<"clang", "acquire_shared_capability">,
+  let Spellings = [Clang<"acquire_capability">,
+                   Clang<"acquire_shared_capability">,
                    GNU<"exclusive_lock_function">,
                    GNU<"shared_lock_function">];
   let Subjects = SubjectList<[Function]>;
@@ -2147,17 +2161,14 @@ def AcquireCapability : InheritableAttr {
   let DuplicatesAllowedWhileMerging = 1;
   let Args = [VariadicExprArgument<"Args">];
   let Accessors = [Accessor<"isShared",
-                    [GNU<"acquire_shared_capability">,
-                     CXX11<"clang", "acquire_shared_capability">,
+                    [Clang<"acquire_shared_capability">,
                      GNU<"shared_lock_function">]>];
   let Documentation = [AcquireCapabilityDocs];
 }
 
 def TryAcquireCapability : InheritableAttr {
-  let Spellings = [GNU<"try_acquire_capability">,
-                   CXX11<"clang", "try_acquire_capability">,
-                   GNU<"try_acquire_shared_capability">,
-                   CXX11<"clang", "try_acquire_shared_capability">];
+  let Spellings = [Clang<"try_acquire_capability">,
+                   Clang<"try_acquire_shared_capability">];
   let Subjects = SubjectList<[Function],
                              ErrorDiag>;
   let LateParsed = 1;
@@ -2166,19 +2177,15 @@ def TryAcquireCapability : InheritableAttr {
   let DuplicatesAllowedWhileMerging = 1;
   let Args = [ExprArgument<"SuccessValue">, VariadicExprArgument<"Args">];
   let Accessors = [Accessor<"isShared",
-                    [GNU<"try_acquire_shared_capability">,
-                     CXX11<"clang", "try_acquire_shared_capability">]>];
+                    [Clang<"try_acquire_shared_capability">]>];
   let Documentation = [TryAcquireCapabilityDocs];
 }
 
 def ReleaseCapability : InheritableAttr {
-  let Spellings = [GNU<"release_capability">,
-                   CXX11<"clang", "release_capability">,
-                   GNU<"release_shared_capability">,
-                   CXX11<"clang", "release_shared_capability">,
-                   GNU<"release_generic_capability">,
-                   CXX11<"clang", "release_generic_capability">,
-                   GNU<"unlock_function">];
+  let Spellings = [Clang<"release_capability">,
+                   Clang<"release_shared_capability">,
+                   Clang<"release_generic_capability">,
+                   Clang<"unlock_function">];
   let Subjects = SubjectList<[Function]>;
   let LateParsed = 1;
   let TemplateDependent = 1;
@@ -2186,36 +2193,31 @@ def ReleaseCapability : InheritableAttr {
   let DuplicatesAllowedWhileMerging = 1;
   let Args = [VariadicExprArgument<"Args">];
   let Accessors = [Accessor<"isShared",
-                    [GNU<"release_shared_capability">,
-                     CXX11<"clang", "release_shared_capability">]>,
+                    [Clang<"release_shared_capability">]>,
                    Accessor<"isGeneric",
-                     [GNU<"release_generic_capability">,
-                      CXX11<"clang", "release_generic_capability">,
-                      GNU<"unlock_function">]>];
+                     [Clang<"release_generic_capability">,
+                      Clang<"unlock_function">]>];
   let Documentation = [ReleaseCapabilityDocs];
 }
 
 def RequiresCapability : InheritableAttr {
-  let Spellings = [GNU<"requires_capability">,
-                   CXX11<"clang", "requires_capability">,
-                   GNU<"exclusive_locks_required">,
-                   GNU<"requires_shared_capability">,
-                   CXX11<"clang", "requires_shared_capability">,
-                   GNU<"shared_locks_required">];
+  let Spellings = [Clang<"requires_capability">,
+                   Clang<"exclusive_locks_required">,
+                   Clang<"requires_shared_capability">,
+                   Clang<"shared_locks_required">];
   let Args = [VariadicExprArgument<"Args">];
   let LateParsed = 1;
   let TemplateDependent = 1;
   let ParseArgumentsAsUnevaluated = 1;
   let DuplicatesAllowedWhileMerging = 1;
   let Subjects = SubjectList<[Function]>;
-  let Accessors = [Accessor<"isShared", [GNU<"requires_shared_capability">,
-                                         GNU<"shared_locks_required">,
-                                CXX11<"clang","requires_shared_capability">]>];
+  let Accessors = [Accessor<"isShared", [Clang<"requires_shared_capability">,
+                                         Clang<"shared_locks_required">]>];
   let Documentation = [Undocumented];
 }
 
 def NoThreadSafetyAnalysis : InheritableAttr {
-  let Spellings = [GNU<"no_thread_safety_analysis">];
+  let Spellings = [Clang<"no_thread_safety_analysis">];
   let Subjects = SubjectList<[Function]>;
   let Documentation = [Undocumented];
 }
@@ -2227,8 +2229,7 @@ def GuardedBy : InheritableAttr {
   let TemplateDependent = 1;
   let ParseArgumentsAsUnevaluated = 1;
   let DuplicatesAllowedWhileMerging = 1;
-  let Subjects = SubjectList<[Field, SharedVar], WarnDiag,
-                             "ExpectedFieldOrGlobalVar">;
+  let Subjects = SubjectList<[Field, SharedVar]>;
   let Documentation = [Undocumented];
 }
 
@@ -2239,8 +2240,7 @@ def PtGuardedBy : InheritableAttr {
   let TemplateDependent = 1;
   let ParseArgumentsAsUnevaluated = 1;
   let DuplicatesAllowedWhileMerging = 1;
-  let Subjects = SubjectList<[Field, SharedVar], WarnDiag,
-                             "ExpectedFieldOrGlobalVar">;
+  let Subjects = SubjectList<[Field, SharedVar]>;
   let Documentation = [Undocumented];
 }
 
@@ -2251,8 +2251,7 @@ def AcquiredAfter : InheritableAttr {
   let TemplateDependent = 1;
   let ParseArgumentsAsUnevaluated = 1;
   let DuplicatesAllowedWhileMerging = 1;
-  let Subjects = SubjectList<[Field, SharedVar], WarnDiag,
-                             "ExpectedFieldOrGlobalVar">;
+  let Subjects = SubjectList<[Field, SharedVar]>;
   let Documentation = [Undocumented];
 }
 
@@ -2263,8 +2262,7 @@ def AcquiredBefore : InheritableAttr {
   let TemplateDependent = 1;
   let ParseArgumentsAsUnevaluated = 1;
   let DuplicatesAllowedWhileMerging = 1;
-  let Subjects = SubjectList<[Field, SharedVar], WarnDiag,
-                             "ExpectedFieldOrGlobalVar">;
+  let Subjects = SubjectList<[Field, SharedVar]>;
   let Documentation = [Undocumented];
 }
 
@@ -2340,7 +2338,7 @@ def LocksExcluded : InheritableAttr {
 // C/C++ consumed attributes.
 
 def Consumable : InheritableAttr {
-  let Spellings = [GNU<"consumable">];
+  let Spellings = [Clang<"consumable">];
   let Subjects = SubjectList<[CXXRecord]>;
   let Args = [EnumArgument<"DefaultState", "ConsumedState",
                            ["unknown", "consumed", "unconsumed"],
@@ -2349,19 +2347,19 @@ def Consumable : InheritableAttr {
 }
 
 def ConsumableAutoCast : InheritableAttr {
-  let Spellings = [GNU<"consumable_auto_cast_state">];
+  let Spellings = [Clang<"consumable_auto_cast_state">];
   let Subjects = SubjectList<[CXXRecord]>;
   let Documentation = [Undocumented];
 }
 
 def ConsumableSetOnRead : InheritableAttr {
-  let Spellings = [GNU<"consumable_set_state_on_read">];
+  let Spellings = [Clang<"consumable_set_state_on_read">];
   let Subjects = SubjectList<[CXXRecord]>;
   let Documentation = [Undocumented];
 }
 
 def CallableWhen : InheritableAttr {
-  let Spellings = [GNU<"callable_when">];
+  let Spellings = [Clang<"callable_when">];
   let Subjects = SubjectList<[CXXMethod]>;
   let Args = [VariadicEnumArgument<"CallableStates", "ConsumedState",
                                    ["unknown", "consumed", "unconsumed"],
@@ -2370,7 +2368,7 @@ def CallableWhen : InheritableAttr {
 }
 
 def ParamTypestate : InheritableAttr {
-  let Spellings = [GNU<"param_typestate">];
+  let Spellings = [Clang<"param_typestate">];
   let Subjects = SubjectList<[ParmVar]>;
   let Args = [EnumArgument<"ParamState", "ConsumedState",
                            ["unknown", "consumed", "unconsumed"],
@@ -2379,7 +2377,7 @@ def ParamTypestate : InheritableAttr {
 }
 
 def ReturnTypestate : InheritableAttr {
-  let Spellings = [GNU<"return_typestate">];
+  let Spellings = [Clang<"return_typestate">];
   let Subjects = SubjectList<[Function, ParmVar]>;
   let Args = [EnumArgument<"State", "ConsumedState",
                            ["unknown", "consumed", "unconsumed"],
@@ -2388,7 +2386,7 @@ def ReturnTypestate : InheritableAttr {
 }
 
 def SetTypestate : InheritableAttr {
-  let Spellings = [GNU<"set_typestate">];
+  let Spellings = [Clang<"set_typestate">];
   let Subjects = SubjectList<[CXXMethod]>;
   let Args = [EnumArgument<"NewState", "ConsumedState",
                            ["unknown", "consumed", "unconsumed"],
@@ -2397,7 +2395,7 @@ def SetTypestate : InheritableAttr {
 }
 
 def TestTypestate : InheritableAttr {
-  let Spellings = [GNU<"test_typestate">];
+  let Spellings = [Clang<"test_typestate">];
   let Subjects = SubjectList<[CXXMethod]>;
   let Args = [EnumArgument<"TestState", "ConsumedState",
                            ["consumed", "unconsumed"],
@@ -2673,6 +2671,14 @@ def OMPCaptureNoInit : InheritableAttr {
   let Documentation = [Undocumented];
 }
 
+def OMPCaptureKind : Attr {
+  // This attribute has no spellings as it is only ever created implicitly.
+  let Spellings = [];
+  let SemaHandler = 0;
+  let Args = [UnsignedArgument<"CaptureKind">];
+  let Documentation = [Undocumented];
+}
+
 def OMPDeclareSimdDecl : Attr {
   let Spellings = [Pragma<"omp", "declare simd">];
   let Subjects = SubjectList<[Function]>;
@@ -2759,7 +2765,7 @@ def OMPDeclareTargetDecl : Attr {
 }
 
 def InternalLinkage : InheritableAttr {
-  let Spellings = [GNU<"internal_linkage">, CXX11<"clang", "internal_linkage">];
+  let Spellings = [Clang<"internal_linkage">];
   let Subjects = SubjectList<[Var, Function, CXXRecord]>;
   let Documentation = [InternalLinkageDocs];
 }
diff --git a/include/clang/Basic/AttrDocs.td b/include/clang/Basic/AttrDocs.td
index 567c7a3a53b06..ecff329c4ccba 100644
--- a/include/clang/Basic/AttrDocs.td
+++ b/include/clang/Basic/AttrDocs.td
@@ -7,6 +7,24 @@
 //
 //===---------------------------------------------------------------------===//
 
+// To test that the documentation builds cleanly, you must run clang-tblgen to
+// convert the .td file into a .rst file, and then run sphinx to convert the
+// .rst file into an HTML file. After completing testing, you should revert the
+// generated .rst file so that the modified version does not get checked in to
+// version control.
+//
+// To run clang-tblgen to generate the .rst file:
+// clang-tblgen -gen-attr-docs -I <root>/llvm/tools/clang/include
+//   <root>/llvm/tools/clang/include/clang/Basic/Attr.td -o
+//   <root>/llvm/tools/clang/docs/AttributeReference.rst
+//
+// To run sphinx to generate the .html files (note that sphinx-build must be
+// available on the PATH):
+// Windows (from within the clang\docs directory):
+//   make.bat html
+// Non-Windows (from within the clang\docs directory):
+//   make -f Makefile.sphinx html
+
 def GlobalDocumentation {
   code Intro =[{..
   -------------------------------------------------------------------
@@ -112,6 +130,50 @@ members, and static locals.
   }];
 }
 
+def NoEscapeDocs : Documentation {
+  let Category = DocCatVariable;
+  let Content = [{
+``noescape`` placed on a function parameter of a pointer type is used to inform
+the compiler that the pointer cannot escape: that is, no reference to the object
+the pointer points to that is derived from the parameter value will survive
+after the function returns. Users are responsible for making sure parameters
+annotated with ``noescape`` do not actuallly escape.
+
+For example:
+
+.. code-block:: c
+
+  int *gp;
+
+  void nonescapingFunc(__attribute__((noescape)) int *p) {
+    *p += 100; // OK.
+  }
+
+  void escapingFunc(__attribute__((noescape)) int *p) {
+    gp = p; // Not OK.
+  }
+
+Additionally, when the parameter is a `block pointer
+<https://clang.llvm.org/docs/BlockLanguageSpec.html>`, the same restriction
+applies to copies of the block. For example:
+
+.. code-block:: c
+
+  typedef void (^BlockTy)();
+  BlockTy g0, g1;
+
+  void nonescapingFunc(__attribute__((noescape)) BlockTy block) {
+    block(); // OK.
+  }
+
+  void escapingFunc(__attribute__((noescape)) BlockTy block) {
+    g0 = block; // Not OK.
+    g1 = Block_copy(block); // Not OK either.
+  }
+
+  }];
+}
+
 def CarriesDependencyDocs : Documentation {
   let Category = DocCatFunction;
   let Content = [{
@@ -1231,6 +1293,7 @@ Here is an example:
 
 def ARMInterruptDocs : Documentation {
   let Category = DocCatFunction;
+  let Heading = "interrupt (ARM)";
   let Content = [{
 Clang supports the GNU style ``__attribute__((interrupt("TYPE")))`` attribute on
 ARM targets. This attribute may be attached to a function definition and
@@ -1272,6 +1335,7 @@ The semantics are as follows:
 
 def MipsInterruptDocs : Documentation {
   let Category = DocCatFunction;
+  let Heading = "interrupt (MIPS)";
   let Content = [{
 Clang supports the GNU style ``__attribute__((interrupt("ARGUMENT")))`` attribute on
 MIPS targets. This attribute may be attached to a function definition and instructs
@@ -1323,8 +1387,52 @@ on the command line.
   }];
 }
 
+def MipsLongCallStyleDocs : Documentation {
+  let Category = DocCatFunction;
+  let Heading = "long_call (gnu::long_call, gnu::far)";
+  let Content = [{
+Clang supports the ``__attribute__((long_call))``, ``__attribute__((far))``,
+and ``__attribute__((near))`` attributes on MIPS targets. These attributes may
+only be added to function declarations and change the code generated
+by the compiler when directly calling the function. The ``near`` attribute
+allows calls to the function to be made using the ``jal`` instruction, which
+requires the function to be located in the same naturally aligned 256MB
+segment as the caller.  The ``long_call`` and ``far`` attributes are synonyms
+and require the use of a different call sequence that works regardless
+of the distance between the functions.
+
+These attributes have no effect for position-independent code.
+
+These attributes take priority over command line switches such
+as ``-mlong-calls`` and ``-mno-long-calls``.
+  }];
+}
+
+def MipsShortCallStyleDocs : Documentation {
+  let Category = DocCatFunction;
+  let Heading = "short_call (gnu::short_call, gnu::near)";
+  let Content = [{
+Clang supports the ``__attribute__((long_call))``, ``__attribute__((far))``,
+``__attribute__((short__call))``, and ``__attribute__((near))`` attributes
+on MIPS targets. These attributes may only be added to function declarations
+and change the code generated by the compiler when directly calling
+the function. The ``short_call`` and ``near`` attributes are synonyms and
+allow calls to the function to be made using the ``jal`` instruction, which
+requires the function to be located in the same naturally aligned 256MB segment
+as the caller.  The ``long_call`` and ``far`` attributes are synonyms and
+require the use of a different call sequence that works regardless
+of the distance between the functions.
+
+These attributes have no effect for position-independent code.
+
+These attributes take priority over command line switches such
+as ``-mlong-calls`` and ``-mno-long-calls``.
+  }];
+}
+
 def AVRInterruptDocs : Documentation {
   let Category = DocCatFunction;
+  let Heading = "interrupt (AVR)";
   let Content = [{
 Clang supports the GNU style ``__attribute__((interrupt))`` attribute on
 AVR targets. This attribute may be attached to a function definition and instructs
@@ -2625,6 +2733,18 @@ Marking virtual functions as ``not_tail_called`` is an error:
   }];
 }
 
+def NoThrowDocs : Documentation {
+  let Category = DocCatFunction;
+  let Content = [{
+Clang supports the GNU style ``__attribute__((nothrow))`` and Microsoft style
+``__declspec(nothrow)`` attribute as an equivilent of `noexcept` on function
+declarations. This attribute informs the compiler that the annotated function
+does not throw an exception. This prevents exception-unwinding. This attribute
+is particularly useful on functions in the C Standard Library that are
+guaranteed to not throw an exception.
+    }];
+}
+
 def InternalLinkageDocs : Documentation {
   let Category = DocCatFunction;
   let Content = [{
@@ -2673,59 +2793,6 @@ Marking virtual functions as ``disable_tail_calls`` is legal.
   }];
 }
 
-def AnyX86InterruptDocs : Documentation {
-  let Category = DocCatFunction;
-  let Content = [{
-Clang supports the GNU style ``__attribute__((interrupt))`` attribute on
-x86/x86-64 targets.The compiler generates function entry and exit sequences
-suitable for use in an interrupt handler when this attribute is present.
-The 'IRET' instruction, instead of the 'RET' instruction, is used to return
-from interrupt or exception handlers.  All registers, except for the EFLAGS
-register which is restored by the 'IRET' instruction, are preserved by the
-compiler.
-
-Any interruptible-without-stack-switch code must be compiled with
--mno-red-zone since interrupt handlers can and will, because of the
-hardware design, touch the red zone.
-
-1. interrupt handler must be declared with a mandatory pointer argument:
-
-  .. code-block:: c
-
-    struct interrupt_frame
-    {
-      uword_t ip;
-      uword_t cs;
-      uword_t flags;
-      uword_t sp;
-      uword_t ss;
-    };
-
-    __attribute__ ((interrupt))
-    void f (struct interrupt_frame *frame) {
-      ...
-    }
-
-2. exception handler:
-
-  The exception handler is very similar to the interrupt handler with
-  a different mandatory function signature:
-
-  .. code-block:: c
-
-    __attribute__ ((interrupt))
-    void f (struct interrupt_frame *frame, uword_t error_code) {
-      ...
-    }
-
-  and compiler pops 'ERROR_CODE' off stack before the 'IRET' instruction.
-
-  The exception handler should only be used for exceptions which push an
-  error code and all other exceptions must use the interrupt handler.
-  The system will crash if the wrong handler is used.
-  }];
-}
-
 def AnyX86NoCallerSavedRegistersDocs : Documentation {
   let Category = DocCatFunction;
   let Content = [{
@@ -2760,6 +2827,31 @@ For example:
   }];
 }
 
+def X86ForceAlignArgPointerDocs : Documentation {
+  let Category = DocCatFunction;
+  let Content = [{
+Use this attribute to force stack alignment.
+
+Legacy x86 code uses 4-byte stack alignment. Newer aligned SSE instructions
+(like 'movaps') that work with the stack require operands to be 16-byte aligned.
+This attribute realigns the stack in the function prologue to make sure the
+stack can be used with SSE instructions.
+
+Note that the x86_64 ABI forces 16-byte stack alignment at the call site.
+Because of this, 'force_align_arg_pointer' is not needed on x86_64, except in
+rare cases where the caller does not align the stack properly (e.g. flow
+jumps from i386 arch code).
+
+  .. code-block:: c
+
+    __attribute__ ((force_align_arg_pointer))
+    void f () {
+      ...
+    }
+
+  }];
+}
+
 def SwiftCallDocs : Documentation {
   let Category = DocCatVariable;
   let Content = [{
diff --git a/include/clang/Basic/Attributes.h b/include/clang/Basic/Attributes.h
index ea9e28ae681ae..c651abacd482b 100644
--- a/include/clang/Basic/Attributes.h
+++ b/include/clang/Basic/Attributes.h
@@ -26,6 +26,8 @@ enum class AttrSyntax {
   Microsoft,
   // Is the identifier known as a C++-style attribute?
   CXX,
+  // Is the identifier known as a C-style attribute?
+  C,
   // Is the identifier known as a pragma attribute?
   Pragma
 };
diff --git a/include/clang/Basic/Builtins.def b/include/clang/Basic/Builtins.def
index 1ddb9beaf9133..3d4deb5ed3064 100644
--- a/include/clang/Basic/Builtins.def
+++ b/include/clang/Basic/Builtins.def
@@ -103,9 +103,9 @@
 #endif
 
 // Standard libc/libm functions:
-BUILTIN(__builtin_atan2 , "ddd"  , "Fnc")
-BUILTIN(__builtin_atan2f, "fff"  , "Fnc")
-BUILTIN(__builtin_atan2l, "LdLdLd", "Fnc")
+BUILTIN(__builtin_atan2 , "ddd"  , "Fne")
+BUILTIN(__builtin_atan2f, "fff"  , "Fne")
+BUILTIN(__builtin_atan2l, "LdLdLd", "Fne")
 BUILTIN(__builtin_abs  , "ii"  , "ncF")
 BUILTIN(__builtin_copysign, "ddd", "ncF")
 BUILTIN(__builtin_copysignf, "fff", "ncF")
@@ -113,9 +113,9 @@ BUILTIN(__builtin_copysignl, "LdLdLd", "ncF")
 BUILTIN(__builtin_fabs , "dd"  , "ncF")
 BUILTIN(__builtin_fabsf, "ff"  , "ncF")
 BUILTIN(__builtin_fabsl, "LdLd", "ncF")
-BUILTIN(__builtin_fmod , "ddd"  , "Fnc")
-BUILTIN(__builtin_fmodf, "fff"  , "Fnc")
-BUILTIN(__builtin_fmodl, "LdLdLd", "Fnc")
+BUILTIN(__builtin_fmod , "ddd"  , "Fne")
+BUILTIN(__builtin_fmodf, "fff"  , "Fne")
+BUILTIN(__builtin_fmodl, "LdLdLd", "Fne")
 BUILTIN(__builtin_frexp , "ddi*"  , "Fn")
 BUILTIN(__builtin_frexpf, "ffi*"  , "Fn")
 BUILTIN(__builtin_frexpl, "LdLdi*", "Fn")
@@ -127,9 +127,9 @@ BUILTIN(__builtin_inff , "f"   , "nc")
 BUILTIN(__builtin_infl , "Ld"  , "nc")
 BUILTIN(__builtin_labs , "LiLi"  , "Fnc")
 BUILTIN(__builtin_llabs, "LLiLLi", "Fnc")
-BUILTIN(__builtin_ldexp , "ddi"  , "Fnc")
-BUILTIN(__builtin_ldexpf, "ffi"  , "Fnc")
-BUILTIN(__builtin_ldexpl, "LdLdi", "Fnc")
+BUILTIN(__builtin_ldexp , "ddi"  , "Fne")
+BUILTIN(__builtin_ldexpf, "ffi"  , "Fne")
+BUILTIN(__builtin_ldexpl, "LdLdi", "Fne")
 BUILTIN(__builtin_modf , "ddd*"  , "Fn")
 BUILTIN(__builtin_modff, "fff*"  , "Fn")
 BUILTIN(__builtin_modfl, "LdLdLd*", "Fn")
@@ -142,119 +142,119 @@ BUILTIN(__builtin_nansl, "LdcC*", "ncF")
 BUILTIN(__builtin_powi , "ddi"  , "Fnc")
 BUILTIN(__builtin_powif, "ffi"  , "Fnc")
 BUILTIN(__builtin_powil, "LdLdi", "Fnc")
-BUILTIN(__builtin_pow , "ddd"  , "Fnc")
-BUILTIN(__builtin_powf, "fff"  , "Fnc")
-BUILTIN(__builtin_powl, "LdLdLd", "Fnc")
+BUILTIN(__builtin_pow , "ddd"  , "Fne")
+BUILTIN(__builtin_powf, "fff"  , "Fne")
+BUILTIN(__builtin_powl, "LdLdLd", "Fne")
 
 // Standard unary libc/libm functions with double/float/long double variants:
-BUILTIN(__builtin_acos , "dd"  , "Fnc")
-BUILTIN(__builtin_acosf, "ff"  , "Fnc")
-BUILTIN(__builtin_acosl, "LdLd", "Fnc")
-BUILTIN(__builtin_acosh , "dd"  , "Fnc")
-BUILTIN(__builtin_acoshf, "ff"  , "Fnc")
-BUILTIN(__builtin_acoshl, "LdLd", "Fnc")
-BUILTIN(__builtin_asin , "dd"  , "Fnc")
-BUILTIN(__builtin_asinf, "ff"  , "Fnc")
-BUILTIN(__builtin_asinl, "LdLd", "Fnc")
-BUILTIN(__builtin_asinh , "dd"  , "Fnc")
-BUILTIN(__builtin_asinhf, "ff"  , "Fnc")
-BUILTIN(__builtin_asinhl, "LdLd", "Fnc")
-BUILTIN(__builtin_atan , "dd"  , "Fnc")
-BUILTIN(__builtin_atanf, "ff"  , "Fnc")
-BUILTIN(__builtin_atanl, "LdLd", "Fnc")
-BUILTIN(__builtin_atanh , "dd", "Fnc")
-BUILTIN(__builtin_atanhf, "ff", "Fnc")
-BUILTIN(__builtin_atanhl, "LdLd", "Fnc")
+BUILTIN(__builtin_acos , "dd"  , "Fne")
+BUILTIN(__builtin_acosf, "ff"  , "Fne")
+BUILTIN(__builtin_acosl, "LdLd", "Fne")
+BUILTIN(__builtin_acosh , "dd"  , "Fne")
+BUILTIN(__builtin_acoshf, "ff"  , "Fne")
+BUILTIN(__builtin_acoshl, "LdLd", "Fne")
+BUILTIN(__builtin_asin , "dd"  , "Fne")
+BUILTIN(__builtin_asinf, "ff"  , "Fne")
+BUILTIN(__builtin_asinl, "LdLd", "Fne")
+BUILTIN(__builtin_asinh , "dd"  , "Fne")
+BUILTIN(__builtin_asinhf, "ff"  , "Fne")
+BUILTIN(__builtin_asinhl, "LdLd", "Fne")
+BUILTIN(__builtin_atan , "dd"  , "Fne")
+BUILTIN(__builtin_atanf, "ff"  , "Fne")
+BUILTIN(__builtin_atanl, "LdLd", "Fne")
+BUILTIN(__builtin_atanh , "dd", "Fne")
+BUILTIN(__builtin_atanhf, "ff", "Fne")
+BUILTIN(__builtin_atanhl, "LdLd", "Fne")
 BUILTIN(__builtin_cbrt , "dd", "Fnc")
 BUILTIN(__builtin_cbrtf, "ff", "Fnc")
 BUILTIN(__builtin_cbrtl, "LdLd", "Fnc")
 BUILTIN(__builtin_ceil , "dd"  , "Fnc")
 BUILTIN(__builtin_ceilf, "ff"  , "Fnc")
 BUILTIN(__builtin_ceill, "LdLd", "Fnc")
-BUILTIN(__builtin_cos , "dd"  , "Fnc")
-BUILTIN(__builtin_cosf, "ff"  , "Fnc")
-BUILTIN(__builtin_cosh , "dd"  , "Fnc")
-BUILTIN(__builtin_coshf, "ff"  , "Fnc")
-BUILTIN(__builtin_coshl, "LdLd", "Fnc")
-BUILTIN(__builtin_cosl, "LdLd", "Fnc")
-BUILTIN(__builtin_erf , "dd", "Fnc")
-BUILTIN(__builtin_erff, "ff", "Fnc")
-BUILTIN(__builtin_erfl, "LdLd", "Fnc")
-BUILTIN(__builtin_erfc , "dd", "Fnc")
-BUILTIN(__builtin_erfcf, "ff", "Fnc")
-BUILTIN(__builtin_erfcl, "LdLd", "Fnc")
-BUILTIN(__builtin_exp , "dd"  , "Fnc")
-BUILTIN(__builtin_expf, "ff"  , "Fnc")
-BUILTIN(__builtin_expl, "LdLd", "Fnc")
-BUILTIN(__builtin_exp2 , "dd"  , "Fnc")
-BUILTIN(__builtin_exp2f, "ff"  , "Fnc")
-BUILTIN(__builtin_exp2l, "LdLd", "Fnc")
-BUILTIN(__builtin_expm1 , "dd", "Fnc")
-BUILTIN(__builtin_expm1f, "ff", "Fnc")
-BUILTIN(__builtin_expm1l, "LdLd", "Fnc")
-BUILTIN(__builtin_fdim, "ddd", "Fnc")
-BUILTIN(__builtin_fdimf, "fff", "Fnc")
-BUILTIN(__builtin_fdiml, "LdLdLd", "Fnc")
+BUILTIN(__builtin_cos , "dd"  , "Fne")
+BUILTIN(__builtin_cosf, "ff"  , "Fne")
+BUILTIN(__builtin_cosh , "dd"  , "Fne")
+BUILTIN(__builtin_coshf, "ff"  , "Fne")
+BUILTIN(__builtin_coshl, "LdLd", "Fne")
+BUILTIN(__builtin_cosl, "LdLd", "Fne")
+BUILTIN(__builtin_erf , "dd", "Fne")
+BUILTIN(__builtin_erff, "ff", "Fne")
+BUILTIN(__builtin_erfl, "LdLd", "Fne")
+BUILTIN(__builtin_erfc , "dd", "Fne")
+BUILTIN(__builtin_erfcf, "ff", "Fne")
+BUILTIN(__builtin_erfcl, "LdLd", "Fne")
+BUILTIN(__builtin_exp , "dd"  , "Fne")
+BUILTIN(__builtin_expf, "ff"  , "Fne")
+BUILTIN(__builtin_expl, "LdLd", "Fne")
+BUILTIN(__builtin_exp2 , "dd"  , "Fne")
+BUILTIN(__builtin_exp2f, "ff"  , "Fne")
+BUILTIN(__builtin_exp2l, "LdLd", "Fne")
+BUILTIN(__builtin_expm1 , "dd", "Fne")
+BUILTIN(__builtin_expm1f, "ff", "Fne")
+BUILTIN(__builtin_expm1l, "LdLd", "Fne")
+BUILTIN(__builtin_fdim, "ddd", "Fne")
+BUILTIN(__builtin_fdimf, "fff", "Fne")
+BUILTIN(__builtin_fdiml, "LdLdLd", "Fne")
 BUILTIN(__builtin_floor , "dd"  , "Fnc")
 BUILTIN(__builtin_floorf, "ff"  , "Fnc")
 BUILTIN(__builtin_floorl, "LdLd", "Fnc")
-BUILTIN(__builtin_fma, "dddd", "Fnc")
-BUILTIN(__builtin_fmaf, "ffff", "Fnc")
-BUILTIN(__builtin_fmal, "LdLdLdLd", "Fnc")
+BUILTIN(__builtin_fma, "dddd", "Fne")
+BUILTIN(__builtin_fmaf, "ffff", "Fne")
+BUILTIN(__builtin_fmal, "LdLdLdLd", "Fne")
 BUILTIN(__builtin_fmax, "ddd", "Fnc")
 BUILTIN(__builtin_fmaxf, "fff", "Fnc")
 BUILTIN(__builtin_fmaxl, "LdLdLd", "Fnc")
 BUILTIN(__builtin_fmin, "ddd", "Fnc")
 BUILTIN(__builtin_fminf, "fff", "Fnc")
 BUILTIN(__builtin_fminl, "LdLdLd", "Fnc")
-BUILTIN(__builtin_hypot , "ddd"  , "Fnc")
-BUILTIN(__builtin_hypotf, "fff"  , "Fnc")
-BUILTIN(__builtin_hypotl, "LdLdLd", "Fnc")
-BUILTIN(__builtin_ilogb , "id", "Fnc")
-BUILTIN(__builtin_ilogbf, "if", "Fnc")
-BUILTIN(__builtin_ilogbl, "iLd", "Fnc")
-BUILTIN(__builtin_lgamma , "dd", "Fnc")
-BUILTIN(__builtin_lgammaf, "ff", "Fnc")
-BUILTIN(__builtin_lgammal, "LdLd", "Fnc")
-BUILTIN(__builtin_llrint, "LLid", "Fnc")
-BUILTIN(__builtin_llrintf, "LLif", "Fnc")
-BUILTIN(__builtin_llrintl, "LLiLd", "Fnc")
-BUILTIN(__builtin_llround , "LLid", "Fnc")
-BUILTIN(__builtin_llroundf, "LLif", "Fnc")
-BUILTIN(__builtin_llroundl, "LLiLd", "Fnc")
-BUILTIN(__builtin_log , "dd"  , "Fnc")
-BUILTIN(__builtin_log10 , "dd"  , "Fnc")
-BUILTIN(__builtin_log10f, "ff"  , "Fnc")
-BUILTIN(__builtin_log10l, "LdLd", "Fnc")
-BUILTIN(__builtin_log1p , "dd"  , "Fnc")
-BUILTIN(__builtin_log1pf, "ff"  , "Fnc")
-BUILTIN(__builtin_log1pl, "LdLd", "Fnc")
-BUILTIN(__builtin_log2, "dd"  , "Fnc")
-BUILTIN(__builtin_log2f, "ff"  , "Fnc")
-BUILTIN(__builtin_log2l, "LdLd"  , "Fnc")
-BUILTIN(__builtin_logb , "dd", "Fnc")
-BUILTIN(__builtin_logbf, "ff", "Fnc")
-BUILTIN(__builtin_logbl, "LdLd", "Fnc")
-BUILTIN(__builtin_logf, "ff"  , "Fnc")
-BUILTIN(__builtin_logl, "LdLd", "Fnc")
-BUILTIN(__builtin_lrint , "Lid", "Fnc")
-BUILTIN(__builtin_lrintf, "Lif", "Fnc")
-BUILTIN(__builtin_lrintl, "LiLd", "Fnc")
-BUILTIN(__builtin_lround , "Lid", "Fnc")
-BUILTIN(__builtin_lroundf, "Lif", "Fnc")
-BUILTIN(__builtin_lroundl, "LiLd", "Fnc")
+BUILTIN(__builtin_hypot , "ddd"  , "Fne")
+BUILTIN(__builtin_hypotf, "fff"  , "Fne")
+BUILTIN(__builtin_hypotl, "LdLdLd", "Fne")
+BUILTIN(__builtin_ilogb , "id", "Fne")
+BUILTIN(__builtin_ilogbf, "if", "Fne")
+BUILTIN(__builtin_ilogbl, "iLd", "Fne")
+BUILTIN(__builtin_lgamma , "dd", "Fn")
+BUILTIN(__builtin_lgammaf, "ff", "Fn")
+BUILTIN(__builtin_lgammal, "LdLd", "Fn")
+BUILTIN(__builtin_llrint, "LLid", "Fne")
+BUILTIN(__builtin_llrintf, "LLif", "Fne")
+BUILTIN(__builtin_llrintl, "LLiLd", "Fne")
+BUILTIN(__builtin_llround , "LLid", "Fne")
+BUILTIN(__builtin_llroundf, "LLif", "Fne")
+BUILTIN(__builtin_llroundl, "LLiLd", "Fne")
+BUILTIN(__builtin_log , "dd"  , "Fne")
+BUILTIN(__builtin_log10 , "dd"  , "Fne")
+BUILTIN(__builtin_log10f, "ff"  , "Fne")
+BUILTIN(__builtin_log10l, "LdLd", "Fne")
+BUILTIN(__builtin_log1p , "dd"  , "Fne")
+BUILTIN(__builtin_log1pf, "ff"  , "Fne")
+BUILTIN(__builtin_log1pl, "LdLd", "Fne")
+BUILTIN(__builtin_log2, "dd"  , "Fne")
+BUILTIN(__builtin_log2f, "ff"  , "Fne")
+BUILTIN(__builtin_log2l, "LdLd"  , "Fne")
+BUILTIN(__builtin_logb , "dd", "Fne")
+BUILTIN(__builtin_logbf, "ff", "Fne")
+BUILTIN(__builtin_logbl, "LdLd", "Fne")
+BUILTIN(__builtin_logf, "ff"  , "Fne")
+BUILTIN(__builtin_logl, "LdLd", "Fne")
+BUILTIN(__builtin_lrint , "Lid", "Fne")
+BUILTIN(__builtin_lrintf, "Lif", "Fne")
+BUILTIN(__builtin_lrintl, "LiLd", "Fne")
+BUILTIN(__builtin_lround , "Lid", "Fne")
+BUILTIN(__builtin_lroundf, "Lif", "Fne")
+BUILTIN(__builtin_lroundl, "LiLd", "Fne")
 BUILTIN(__builtin_nearbyint , "dd", "Fnc")
 BUILTIN(__builtin_nearbyintf, "ff", "Fnc")
 BUILTIN(__builtin_nearbyintl, "LdLd", "Fnc")
-BUILTIN(__builtin_nextafter , "ddd", "Fnc")
-BUILTIN(__builtin_nextafterf, "fff", "Fnc")
-BUILTIN(__builtin_nextafterl, "LdLdLd", "Fnc")
-BUILTIN(__builtin_nexttoward , "ddLd", "Fnc")
-BUILTIN(__builtin_nexttowardf, "ffLd", "Fnc")
-BUILTIN(__builtin_nexttowardl, "LdLdLd", "Fnc")
-BUILTIN(__builtin_remainder , "ddd", "Fnc")
-BUILTIN(__builtin_remainderf, "fff", "Fnc")
-BUILTIN(__builtin_remainderl, "LdLdLd", "Fnc")
+BUILTIN(__builtin_nextafter , "ddd", "Fne")
+BUILTIN(__builtin_nextafterf, "fff", "Fne")
+BUILTIN(__builtin_nextafterl, "LdLdLd", "Fne")
+BUILTIN(__builtin_nexttoward , "ddLd", "Fne")
+BUILTIN(__builtin_nexttowardf, "ffLd", "Fne")
+BUILTIN(__builtin_nexttowardl, "LdLdLd", "Fne")
+BUILTIN(__builtin_remainder , "ddd", "Fne")
+BUILTIN(__builtin_remainderf, "fff", "Fne")
+BUILTIN(__builtin_remainderl, "LdLdLd", "Fne")
 BUILTIN(__builtin_remquo , "dddi*", "Fn")
 BUILTIN(__builtin_remquof, "fffi*", "Fn")
 BUILTIN(__builtin_remquol, "LdLdLdi*", "Fn")
@@ -264,101 +264,101 @@ BUILTIN(__builtin_rintl, "LdLd", "Fnc")
 BUILTIN(__builtin_round, "dd"  , "Fnc")
 BUILTIN(__builtin_roundf, "ff"  , "Fnc")
 BUILTIN(__builtin_roundl, "LdLd"  , "Fnc")
-BUILTIN(__builtin_scalbln , "ddLi", "Fnc")
-BUILTIN(__builtin_scalblnf, "ffLi", "Fnc")
-BUILTIN(__builtin_scalblnl, "LdLdLi", "Fnc")
-BUILTIN(__builtin_scalbn , "ddi", "Fnc")
-BUILTIN(__builtin_scalbnf, "ffi", "Fnc")
-BUILTIN(__builtin_scalbnl, "LdLdi", "Fnc")
-BUILTIN(__builtin_sin , "dd"  , "Fnc")
-BUILTIN(__builtin_sinf, "ff"  , "Fnc")
-BUILTIN(__builtin_sinh , "dd"  , "Fnc")
-BUILTIN(__builtin_sinhf, "ff"  , "Fnc")
-BUILTIN(__builtin_sinhl, "LdLd", "Fnc")
-BUILTIN(__builtin_sinl, "LdLd", "Fnc")
-BUILTIN(__builtin_sqrt , "dd"  , "Fnc")
-BUILTIN(__builtin_sqrtf, "ff"  , "Fnc")
-BUILTIN(__builtin_sqrtl, "LdLd", "Fnc")
-BUILTIN(__builtin_tan , "dd"  , "Fnc")
-BUILTIN(__builtin_tanf, "ff"  , "Fnc")
-BUILTIN(__builtin_tanh , "dd"  , "Fnc")
-BUILTIN(__builtin_tanhf, "ff"  , "Fnc")
-BUILTIN(__builtin_tanhl, "LdLd", "Fnc")
-BUILTIN(__builtin_tanl, "LdLd", "Fnc")
-BUILTIN(__builtin_tgamma , "dd", "Fnc")
-BUILTIN(__builtin_tgammaf, "ff", "Fnc")
-BUILTIN(__builtin_tgammal, "LdLd", "Fnc")
+BUILTIN(__builtin_scalbln , "ddLi", "Fne")
+BUILTIN(__builtin_scalblnf, "ffLi", "Fne")
+BUILTIN(__builtin_scalblnl, "LdLdLi", "Fne")
+BUILTIN(__builtin_scalbn , "ddi", "Fne")
+BUILTIN(__builtin_scalbnf, "ffi", "Fne")
+BUILTIN(__builtin_scalbnl, "LdLdi", "Fne")
+BUILTIN(__builtin_sin , "dd"  , "Fne")
+BUILTIN(__builtin_sinf, "ff"  , "Fne")
+BUILTIN(__builtin_sinh , "dd"  , "Fne")
+BUILTIN(__builtin_sinhf, "ff"  , "Fne")
+BUILTIN(__builtin_sinhl, "LdLd", "Fne")
+BUILTIN(__builtin_sinl, "LdLd", "Fne")
+BUILTIN(__builtin_sqrt , "dd"  , "Fne")
+BUILTIN(__builtin_sqrtf, "ff"  , "Fne")
+BUILTIN(__builtin_sqrtl, "LdLd", "Fne")
+BUILTIN(__builtin_tan , "dd"  , "Fne")
+BUILTIN(__builtin_tanf, "ff"  , "Fne")
+BUILTIN(__builtin_tanh , "dd"  , "Fne")
+BUILTIN(__builtin_tanhf, "ff"  , "Fne")
+BUILTIN(__builtin_tanhl, "LdLd", "Fne")
+BUILTIN(__builtin_tanl, "LdLd", "Fne")
+BUILTIN(__builtin_tgamma , "dd", "Fne")
+BUILTIN(__builtin_tgammaf, "ff", "Fne")
+BUILTIN(__builtin_tgammal, "LdLd", "Fne")
 BUILTIN(__builtin_trunc , "dd", "Fnc")
 BUILTIN(__builtin_truncf, "ff", "Fnc")
 BUILTIN(__builtin_truncl, "LdLd", "Fnc")
 
 // C99 complex builtins
-BUILTIN(__builtin_cabs, "dXd", "Fnc")
-BUILTIN(__builtin_cabsf, "fXf", "Fnc")
-BUILTIN(__builtin_cabsl, "LdXLd", "Fnc")
-BUILTIN(__builtin_cacos, "XdXd", "Fnc")
-BUILTIN(__builtin_cacosf, "XfXf", "Fnc")
-BUILTIN(__builtin_cacosh, "XdXd", "Fnc")
-BUILTIN(__builtin_cacoshf, "XfXf", "Fnc")
-BUILTIN(__builtin_cacoshl, "XLdXLd", "Fnc")
-BUILTIN(__builtin_cacosl, "XLdXLd", "Fnc")
-BUILTIN(__builtin_carg, "dXd", "Fnc")
-BUILTIN(__builtin_cargf, "fXf", "Fnc")
-BUILTIN(__builtin_cargl, "LdXLd", "Fnc")
-BUILTIN(__builtin_casin, "XdXd", "Fnc")
-BUILTIN(__builtin_casinf, "XfXf", "Fnc")
-BUILTIN(__builtin_casinh, "XdXd", "Fnc")
-BUILTIN(__builtin_casinhf, "XfXf", "Fnc")
-BUILTIN(__builtin_casinhl, "XLdXLd", "Fnc")
-BUILTIN(__builtin_casinl, "XLdXLd", "Fnc")
-BUILTIN(__builtin_catan, "XdXd", "Fnc")
-BUILTIN(__builtin_catanf, "XfXf", "Fnc")
-BUILTIN(__builtin_catanh, "XdXd", "Fnc")
-BUILTIN(__builtin_catanhf, "XfXf", "Fnc")
-BUILTIN(__builtin_catanhl, "XLdXLd", "Fnc")
-BUILTIN(__builtin_catanl, "XLdXLd", "Fnc")
-BUILTIN(__builtin_ccos, "XdXd", "Fnc")
-BUILTIN(__builtin_ccosf, "XfXf", "Fnc")
-BUILTIN(__builtin_ccosl, "XLdXLd", "Fnc")
-BUILTIN(__builtin_ccosh, "XdXd", "Fnc")
-BUILTIN(__builtin_ccoshf, "XfXf", "Fnc")
-BUILTIN(__builtin_ccoshl, "XLdXLd", "Fnc")
-BUILTIN(__builtin_cexp, "XdXd", "Fnc")
-BUILTIN(__builtin_cexpf, "XfXf", "Fnc")
-BUILTIN(__builtin_cexpl, "XLdXLd", "Fnc")
+BUILTIN(__builtin_cabs, "dXd", "Fne")
+BUILTIN(__builtin_cabsf, "fXf", "Fne")
+BUILTIN(__builtin_cabsl, "LdXLd", "Fne")
+BUILTIN(__builtin_cacos, "XdXd", "Fne")
+BUILTIN(__builtin_cacosf, "XfXf", "Fne")
+BUILTIN(__builtin_cacosh, "XdXd", "Fne")
+BUILTIN(__builtin_cacoshf, "XfXf", "Fne")
+BUILTIN(__builtin_cacoshl, "XLdXLd", "Fne")
+BUILTIN(__builtin_cacosl, "XLdXLd", "Fne")
+BUILTIN(__builtin_carg, "dXd", "Fne")
+BUILTIN(__builtin_cargf, "fXf", "Fne")
+BUILTIN(__builtin_cargl, "LdXLd", "Fne")
+BUILTIN(__builtin_casin, "XdXd", "Fne")
+BUILTIN(__builtin_casinf, "XfXf", "Fne")
+BUILTIN(__builtin_casinh, "XdXd", "Fne")
+BUILTIN(__builtin_casinhf, "XfXf", "Fne")
+BUILTIN(__builtin_casinhl, "XLdXLd", "Fne")
+BUILTIN(__builtin_casinl, "XLdXLd", "Fne")
+BUILTIN(__builtin_catan, "XdXd", "Fne")
+BUILTIN(__builtin_catanf, "XfXf", "Fne")
+BUILTIN(__builtin_catanh, "XdXd", "Fne")
+BUILTIN(__builtin_catanhf, "XfXf", "Fne")
+BUILTIN(__builtin_catanhl, "XLdXLd", "Fne")
+BUILTIN(__builtin_catanl, "XLdXLd", "Fne")
+BUILTIN(__builtin_ccos, "XdXd", "Fne")
+BUILTIN(__builtin_ccosf, "XfXf", "Fne")
+BUILTIN(__builtin_ccosl, "XLdXLd", "Fne")
+BUILTIN(__builtin_ccosh, "XdXd", "Fne")
+BUILTIN(__builtin_ccoshf, "XfXf", "Fne")
+BUILTIN(__builtin_ccoshl, "XLdXLd", "Fne")
+BUILTIN(__builtin_cexp, "XdXd", "Fne")
+BUILTIN(__builtin_cexpf, "XfXf", "Fne")
+BUILTIN(__builtin_cexpl, "XLdXLd", "Fne")
 BUILTIN(__builtin_cimag, "dXd", "Fnc")
 BUILTIN(__builtin_cimagf, "fXf", "Fnc")
 BUILTIN(__builtin_cimagl, "LdXLd", "Fnc")
 BUILTIN(__builtin_conj, "XdXd", "Fnc")
 BUILTIN(__builtin_conjf, "XfXf", "Fnc")
 BUILTIN(__builtin_conjl, "XLdXLd", "Fnc")
-BUILTIN(__builtin_clog, "XdXd", "Fnc")
-BUILTIN(__builtin_clogf, "XfXf", "Fnc")
-BUILTIN(__builtin_clogl, "XLdXLd", "Fnc")
+BUILTIN(__builtin_clog, "XdXd", "Fne")
+BUILTIN(__builtin_clogf, "XfXf", "Fne")
+BUILTIN(__builtin_clogl, "XLdXLd", "Fne")
 BUILTIN(__builtin_cproj, "XdXd", "Fnc")
 BUILTIN(__builtin_cprojf, "XfXf", "Fnc")
 BUILTIN(__builtin_cprojl, "XLdXLd", "Fnc")
-BUILTIN(__builtin_cpow, "XdXdXd", "Fnc")
-BUILTIN(__builtin_cpowf, "XfXfXf", "Fnc")
-BUILTIN(__builtin_cpowl, "XLdXLdXLd", "Fnc")
+BUILTIN(__builtin_cpow, "XdXdXd", "Fne")
+BUILTIN(__builtin_cpowf, "XfXfXf", "Fne")
+BUILTIN(__builtin_cpowl, "XLdXLdXLd", "Fne")
 BUILTIN(__builtin_creal, "dXd", "Fnc")
 BUILTIN(__builtin_crealf, "fXf", "Fnc")
 BUILTIN(__builtin_creall, "LdXLd", "Fnc")
-BUILTIN(__builtin_csin, "XdXd", "Fnc")
-BUILTIN(__builtin_csinf, "XfXf", "Fnc")
-BUILTIN(__builtin_csinl, "XLdXLd", "Fnc")
-BUILTIN(__builtin_csinh, "XdXd", "Fnc")
-BUILTIN(__builtin_csinhf, "XfXf", "Fnc")
-BUILTIN(__builtin_csinhl, "XLdXLd", "Fnc")
-BUILTIN(__builtin_csqrt, "XdXd", "Fnc")
-BUILTIN(__builtin_csqrtf, "XfXf", "Fnc")
-BUILTIN(__builtin_csqrtl, "XLdXLd", "Fnc")
-BUILTIN(__builtin_ctan, "XdXd", "Fnc")
-BUILTIN(__builtin_ctanf, "XfXf", "Fnc")
-BUILTIN(__builtin_ctanl, "XLdXLd", "Fnc")
-BUILTIN(__builtin_ctanh, "XdXd", "Fnc")
-BUILTIN(__builtin_ctanhf, "XfXf", "Fnc")
-BUILTIN(__builtin_ctanhl, "XLdXLd", "Fnc")
+BUILTIN(__builtin_csin, "XdXd", "Fne")
+BUILTIN(__builtin_csinf, "XfXf", "Fne")
+BUILTIN(__builtin_csinl, "XLdXLd", "Fne")
+BUILTIN(__builtin_csinh, "XdXd", "Fne")
+BUILTIN(__builtin_csinhf, "XfXf", "Fne")
+BUILTIN(__builtin_csinhl, "XLdXLd", "Fne")
+BUILTIN(__builtin_csqrt, "XdXd", "Fne")
+BUILTIN(__builtin_csqrtf, "XfXf", "Fne")
+BUILTIN(__builtin_csqrtl, "XLdXLd", "Fne")
+BUILTIN(__builtin_ctan, "XdXd", "Fne")
+BUILTIN(__builtin_ctanf, "XfXf", "Fne")
+BUILTIN(__builtin_ctanl, "XLdXLd", "Fne")
+BUILTIN(__builtin_ctanh, "XdXd", "Fne")
+BUILTIN(__builtin_ctanhf, "XfXf", "Fne")
+BUILTIN(__builtin_ctanhl, "XLdXLd", "Fne")
 
 // FP Comparisons.
 BUILTIN(__builtin_isgreater     , "i.", "Fnc")
@@ -700,6 +700,21 @@ BUILTIN(__atomic_signal_fence, "vi", "n")
 BUILTIN(__atomic_always_lock_free, "izvCD*", "n")
 BUILTIN(__atomic_is_lock_free, "izvCD*", "n")
 
+// OpenCL 2.0 atomic builtins.
+ATOMIC_BUILTIN(__opencl_atomic_init, "v.", "t")
+ATOMIC_BUILTIN(__opencl_atomic_load, "v.", "t")
+ATOMIC_BUILTIN(__opencl_atomic_store, "v.", "t")
+ATOMIC_BUILTIN(__opencl_atomic_exchange, "v.", "t")
+ATOMIC_BUILTIN(__opencl_atomic_compare_exchange_strong, "v.", "t")
+ATOMIC_BUILTIN(__opencl_atomic_compare_exchange_weak, "v.", "t")
+ATOMIC_BUILTIN(__opencl_atomic_fetch_add, "v.", "t")
+ATOMIC_BUILTIN(__opencl_atomic_fetch_sub, "v.", "t")
+ATOMIC_BUILTIN(__opencl_atomic_fetch_and, "v.", "t")
+ATOMIC_BUILTIN(__opencl_atomic_fetch_or, "v.", "t")
+ATOMIC_BUILTIN(__opencl_atomic_fetch_xor, "v.", "t")
+ATOMIC_BUILTIN(__opencl_atomic_fetch_min, "v.", "t")
+ATOMIC_BUILTIN(__opencl_atomic_fetch_max, "v.", "t")
+
 #undef ATOMIC_BUILTIN
 
 // Non-overloaded atomic builtins.
@@ -717,6 +732,7 @@ BUILTIN(__builtin_rindex, "c*cC*i", "Fn")
 
 // Microsoft builtins.  These are only active with -fms-extensions.
 LANGBUILTIN(_alloca,          "v*z", "n", ALL_MS_LANGUAGES)
+LANGBUILTIN(__annotation,     "wC*.","n", ALL_MS_LANGUAGES)
 LANGBUILTIN(__assume,         "vb",  "n", ALL_MS_LANGUAGES)
 LIBBUILTIN(_byteswap_ushort, "UsUs",     "fnc", "stdlib.h", ALL_MS_LANGUAGES)
 LIBBUILTIN(_byteswap_ulong,  "UNiUNi",   "fnc", "stdlib.h", ALL_MS_LANGUAGES)
@@ -992,9 +1008,9 @@ LIBBUILTIN(modf, "ddd*", "fn", "math.h", ALL_LANGUAGES)
 LIBBUILTIN(modff, "fff*", "fn", "math.h", ALL_LANGUAGES)
 LIBBUILTIN(modfl, "LdLdLd*", "fn", "math.h", ALL_LANGUAGES)
 
-LIBBUILTIN(nan,  "dcC*", "fnc", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(nanf, "fcC*", "fnc", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(nanl, "LdcC*", "fnc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(nan,  "dcC*", "fUn", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(nanf, "fcC*", "fUn", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(nanl, "LdcC*", "fUn", "math.h", ALL_LANGUAGES)
 
 LIBBUILTIN(pow, "ddd", "fne", "math.h", ALL_LANGUAGES)
 LIBBUILTIN(powf, "fff", "fne", "math.h", ALL_LANGUAGES)
@@ -1024,9 +1040,9 @@ LIBBUILTIN(atanh, "dd", "fne", "math.h", ALL_LANGUAGES)
 LIBBUILTIN(atanhf, "ff", "fne", "math.h", ALL_LANGUAGES)
 LIBBUILTIN(atanhl, "LdLd", "fne", "math.h", ALL_LANGUAGES)
 
-LIBBUILTIN(cbrt, "dd", "fne", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(cbrtf, "ff", "fne", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(cbrtl, "LdLd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(cbrt, "dd", "fnc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(cbrtf, "ff", "fnc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(cbrtl, "LdLd", "fnc", "math.h", ALL_LANGUAGES)
 
 LIBBUILTIN(ceil, "dd", "fnc", "math.h", ALL_LANGUAGES)
 LIBBUILTIN(ceilf, "ff", "fnc", "math.h", ALL_LANGUAGES)
@@ -1146,6 +1162,10 @@ LIBBUILTIN(remainder, "ddd", "fne", "math.h", ALL_LANGUAGES)
 LIBBUILTIN(remainderf, "fff", "fne", "math.h", ALL_LANGUAGES)
 LIBBUILTIN(remainderl, "LdLdLd", "fne", "math.h", ALL_LANGUAGES)
 
+LIBBUILTIN(remquo, "dddi*", "fn", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(remquof, "fffi*", "fn", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(remquol, "LdLdLdi*", "fn", "math.h", ALL_LANGUAGES)
+
 LIBBUILTIN(rint, "dd", "fnc", "math.h", ALL_LANGUAGES)
 LIBBUILTIN(rintf, "ff", "fnc", "math.h", ALL_LANGUAGES)
 LIBBUILTIN(rintl, "LdLd", "fnc", "math.h", ALL_LANGUAGES)
@@ -1190,49 +1210,49 @@ LIBBUILTIN(trunc, "dd", "fnc", "math.h", ALL_LANGUAGES)
 LIBBUILTIN(truncf, "ff", "fnc", "math.h", ALL_LANGUAGES)
 LIBBUILTIN(truncl, "LdLd", "fnc", "math.h", ALL_LANGUAGES)
 
-LIBBUILTIN(cabs, "dXd", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(cabsf, "fXf", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(cabsl, "LdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cabs, "dXd", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cabsf, "fXf", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cabsl, "LdXLd", "fne", "complex.h", ALL_LANGUAGES)
 
-LIBBUILTIN(cacos, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(cacosf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(cacosl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cacos, "XdXd", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cacosf, "XfXf", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cacosl, "XLdXLd", "fne", "complex.h", ALL_LANGUAGES)
 
-LIBBUILTIN(cacosh, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(cacoshf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(cacoshl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cacosh, "XdXd", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cacoshf, "XfXf", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cacoshl, "XLdXLd", "fne", "complex.h", ALL_LANGUAGES)
 
-LIBBUILTIN(carg, "dXd", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(cargf, "fXf", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(cargl, "LdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(carg, "dXd", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cargf, "fXf", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cargl, "LdXLd", "fne", "complex.h", ALL_LANGUAGES)
 
-LIBBUILTIN(casin, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(casinf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(casinl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(casin, "XdXd", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(casinf, "XfXf", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(casinl, "XLdXLd", "fne", "complex.h", ALL_LANGUAGES)
 
-LIBBUILTIN(casinh, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(casinhf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(casinhl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(casinh, "XdXd", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(casinhf, "XfXf", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(casinhl, "XLdXLd", "fne", "complex.h", ALL_LANGUAGES)
 
-LIBBUILTIN(catan, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(catanf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(catanl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(catan, "XdXd", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(catanf, "XfXf", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(catanl, "XLdXLd", "fne", "complex.h", ALL_LANGUAGES)
 
-LIBBUILTIN(catanh, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(catanhf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(catanhl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(catanh, "XdXd", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(catanhf, "XfXf", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(catanhl, "XLdXLd", "fne", "complex.h", ALL_LANGUAGES)
 
-LIBBUILTIN(ccos, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(ccosf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(ccosl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(ccos, "XdXd", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(ccosf, "XfXf", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(ccosl, "XLdXLd", "fne", "complex.h", ALL_LANGUAGES)
 
-LIBBUILTIN(ccosh, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(ccoshf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(ccoshl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(ccosh, "XdXd", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(ccoshf, "XfXf", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(ccoshl, "XLdXLd", "fne", "complex.h", ALL_LANGUAGES)
 
-LIBBUILTIN(cexp, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(cexpf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(cexpl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cexp, "XdXd", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cexpf, "XfXf", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cexpl, "XLdXLd", "fne", "complex.h", ALL_LANGUAGES)
 
 LIBBUILTIN(cimag, "dXd", "fnc", "complex.h", ALL_LANGUAGES)
 LIBBUILTIN(cimagf, "fXf", "fnc", "complex.h", ALL_LANGUAGES)
@@ -1242,41 +1262,41 @@ LIBBUILTIN(conj, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
 LIBBUILTIN(conjf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
 LIBBUILTIN(conjl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
 
-LIBBUILTIN(clog, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(clogf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(clogl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(clog, "XdXd", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(clogf, "XfXf", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(clogl, "XLdXLd", "fne", "complex.h", ALL_LANGUAGES)
 
 LIBBUILTIN(cproj, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
 LIBBUILTIN(cprojf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
 LIBBUILTIN(cprojl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
 
-LIBBUILTIN(cpow, "XdXdXd", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(cpowf, "XfXfXf", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(cpowl, "XLdXLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cpow, "XdXdXd", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cpowf, "XfXfXf", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cpowl, "XLdXLdXLd", "fne", "complex.h", ALL_LANGUAGES)
 
 LIBBUILTIN(creal, "dXd", "fnc", "complex.h", ALL_LANGUAGES)
 LIBBUILTIN(crealf, "fXf", "fnc", "complex.h", ALL_LANGUAGES)
 LIBBUILTIN(creall, "LdXLd", "fnc", "complex.h", ALL_LANGUAGES)
 
-LIBBUILTIN(csin, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(csinf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(csinl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(csin, "XdXd", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(csinf, "XfXf", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(csinl, "XLdXLd", "fne", "complex.h", ALL_LANGUAGES)
 
-LIBBUILTIN(csinh, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(csinhf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(csinhl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(csinh, "XdXd", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(csinhf, "XfXf", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(csinhl, "XLdXLd", "fne", "complex.h", ALL_LANGUAGES)
 
-LIBBUILTIN(csqrt, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(csqrtf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(csqrtl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(csqrt, "XdXd", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(csqrtf, "XfXf", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(csqrtl, "XLdXLd", "fne", "complex.h", ALL_LANGUAGES)
 
-LIBBUILTIN(ctan, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(ctanf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(ctanl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(ctan, "XdXd", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(ctanf, "XfXf", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(ctanl, "XLdXLd", "fne", "complex.h", ALL_LANGUAGES)
 
-LIBBUILTIN(ctanh, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(ctanhf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(ctanhl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(ctanh, "XdXd", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(ctanhf, "XfXf", "fne", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(ctanhl, "XLdXLd", "fne", "complex.h", ALL_LANGUAGES)
 
 // __sinpi and friends are OS X specific library functions, but otherwise much
 // like the standard (non-complex) sin (etc).
@@ -1398,18 +1418,29 @@ LANGBUILTIN(get_pipe_max_packets, "Ui.", "tn", OCLC20_LANG)
 // OpenCL v2.0 s6.13.17 - Enqueue kernel functions.
 // Custom builtin check allows to perform special check of passed block arguments.
 LANGBUILTIN(enqueue_kernel, "i.", "tn", OCLC20_LANG)
-LANGBUILTIN(get_kernel_work_group_size, "i.", "tn", OCLC20_LANG)
-LANGBUILTIN(get_kernel_preferred_work_group_size_multiple, "i.", "tn", OCLC20_LANG)
+LANGBUILTIN(get_kernel_work_group_size, "Ui.", "tn", OCLC20_LANG)
+LANGBUILTIN(get_kernel_preferred_work_group_size_multiple, "Ui.", "tn", OCLC20_LANG)
+LANGBUILTIN(get_kernel_max_sub_group_size_for_ndrange, "Ui.", "tn", OCLC20_LANG)
+LANGBUILTIN(get_kernel_sub_group_count_for_ndrange, "Ui.", "tn", OCLC20_LANG)
 
 // OpenCL v2.0 s6.13.9 - Address space qualifier functions.
 LANGBUILTIN(to_global, "v*v*", "tn", OCLC20_LANG)
 LANGBUILTIN(to_local, "v*v*", "tn", OCLC20_LANG)
 LANGBUILTIN(to_private, "v*v*", "tn", OCLC20_LANG)
 
+// OpenCL half load/store builtin
+LANGBUILTIN(__builtin_store_half, "vdh*", "n", ALL_OCLC_LANGUAGES)
+LANGBUILTIN(__builtin_store_halff, "vfh*", "n", ALL_OCLC_LANGUAGES)
+LANGBUILTIN(__builtin_load_half, "dhC*", "nc", ALL_OCLC_LANGUAGES)
+LANGBUILTIN(__builtin_load_halff, "fhC*", "nc", ALL_OCLC_LANGUAGES)
+
 // Builtins for os_log/os_trace
 BUILTIN(__builtin_os_log_format_buffer_size, "zcC*.", "p:0:nut")
 BUILTIN(__builtin_os_log_format, "v*v*cC*.", "p:0:nt")
 
+// OpenMP 4.0
+LANGBUILTIN(omp_is_initial_device, "i", "nc", OMP_LANG)
+
 // Builtins for XRay
 BUILTIN(__xray_customevent, "vcC*z", "")
 
diff --git a/include/clang/Basic/Builtins.h b/include/clang/Basic/Builtins.h
index 87c1f93eedefe..963c72ea82e0e 100644
--- a/include/clang/Basic/Builtins.h
+++ b/include/clang/Basic/Builtins.h
@@ -36,10 +36,13 @@ enum LanguageID {
   CXX_LANG = 0x4,     // builtin for cplusplus only.
   OBJC_LANG = 0x8,    // builtin for objective-c and objective-c++
   MS_LANG = 0x10,     // builtin requires MS mode.
-  OCLC20_LANG = 0x20, // builtin for OpenCL C only.
+  OCLC20_LANG = 0x20, // builtin for OpenCL C 2.0 only.
+  OCLC1X_LANG = 0x40, // builtin for OpenCL C 1.x only.
+  OMP_LANG = 0x80,    // builtin requires OpenMP.
   ALL_LANGUAGES = C_LANG | CXX_LANG | OBJC_LANG, // builtin for all languages.
   ALL_GNU_LANGUAGES = ALL_LANGUAGES | GNU_LANG,  // builtin requires GNU mode.
-  ALL_MS_LANGUAGES = ALL_LANGUAGES | MS_LANG     // builtin requires MS mode.
+  ALL_MS_LANGUAGES = ALL_LANGUAGES | MS_LANG,    // builtin requires MS mode.
+  ALL_OCLC_LANGUAGES = OCLC1X_LANG | OCLC20_LANG // builtin for OCLC languages.
 };
 
 namespace Builtin {
diff --git a/include/clang/Basic/BuiltinsAArch64.def b/include/clang/Basic/BuiltinsAArch64.def
index 1db4c1471029b..55a4f70176d00 100644
--- a/include/clang/Basic/BuiltinsAArch64.def
+++ b/include/clang/Basic/BuiltinsAArch64.def
@@ -14,6 +14,10 @@
 
 // The format of this database matches clang/Basic/Builtins.def.
 
+#if defined(BUILTIN) && !defined(LANGBUILTIN)
+#   define LANGBUILTIN(ID, TYPE, ATTRS, BUILTIN_LANG) BUILTIN(ID, TYPE, ATTRS)
+#endif
+
 // In libgcc
 BUILTIN(__clear_cache, "vv*v*", "i")
 
@@ -61,4 +65,9 @@ BUILTIN(__builtin_arm_wsr, "vcC*Ui", "nc")
 BUILTIN(__builtin_arm_wsr64, "vcC*LUi", "nc")
 BUILTIN(__builtin_arm_wsrp, "vcC*vC*", "nc")
 
+LANGBUILTIN(__dmb, "vUi", "nc", ALL_MS_LANGUAGES)
+LANGBUILTIN(__dsb, "vUi", "nc", ALL_MS_LANGUAGES)
+LANGBUILTIN(__isb, "vUi", "nc", ALL_MS_LANGUAGES)
+
 #undef BUILTIN
+#undef LANGBUILTIN
diff --git a/include/clang/Basic/BuiltinsAMDGPU.def b/include/clang/Basic/BuiltinsAMDGPU.def
index 6542acafe48a5..ec6a0fb917657 100644
--- a/include/clang/Basic/BuiltinsAMDGPU.def
+++ b/include/clang/Basic/BuiltinsAMDGPU.def
@@ -21,6 +21,7 @@
 // SI+ only builtins.
 //===----------------------------------------------------------------------===//
 
+BUILTIN(__builtin_amdgcn_dispatch_ptr, "Uc*2", "nc")
 BUILTIN(__builtin_amdgcn_kernarg_segment_ptr, "Uc*2", "nc")
 BUILTIN(__builtin_amdgcn_implicitarg_ptr, "Uc*2", "nc")
 
@@ -120,6 +121,8 @@ TARGET_BUILTIN(__builtin_amdgcn_fmed3h, "hhhh", "nc", "gfx9-insts")
 // Special builtins.
 //===----------------------------------------------------------------------===//
 BUILTIN(__builtin_amdgcn_read_exec, "LUi", "nc")
+BUILTIN(__builtin_amdgcn_read_exec_lo, "Ui", "nc")
+BUILTIN(__builtin_amdgcn_read_exec_hi, "Ui", "nc")
 
 //===----------------------------------------------------------------------===//
 // R600-NI only builtins.
diff --git a/include/clang/Basic/BuiltinsARM.def b/include/clang/Basic/BuiltinsARM.def
index 4e277f8a5a6b5..941d320d729f4 100644
--- a/include/clang/Basic/BuiltinsARM.def
+++ b/include/clang/Basic/BuiltinsARM.def
@@ -36,6 +36,7 @@ BUILTIN(__builtin_arm_smulwt, "iii", "nc")
 // Saturating arithmetic
 BUILTIN(__builtin_arm_qadd, "iii", "nc")
 BUILTIN(__builtin_arm_qsub, "iii", "nc")
+BUILTIN(__builtin_arm_qdbl, "ii", "nc")
 BUILTIN(__builtin_arm_ssat, "iiUi", "nc")
 BUILTIN(__builtin_arm_usat, "UiiUi", "nc")
 
diff --git a/include/clang/Basic/BuiltinsHexagon.def b/include/clang/Basic/BuiltinsHexagon.def
index 14fc4adc25bc0..fda50b53589bd 100644
--- a/include/clang/Basic/BuiltinsHexagon.def
+++ b/include/clang/Basic/BuiltinsHexagon.def
@@ -17,7 +17,6 @@
 // The builtins below are not autogenerated from iset.py.
 // Make sure you do not overwrite these.
 
-BUILTIN(__builtin_SI_to_SXTHI_asrh, "ii", "")
 BUILTIN(__builtin_brev_ldd,   "LLi*LLi*LLi*i", "")
 BUILTIN(__builtin_brev_ldw,   "i*i*i*i", "")
 BUILTIN(__builtin_brev_ldh,   "s*s*s*i", "")
@@ -882,6 +881,7 @@ BUILTIN(__builtin_HEXAGON_S2_ct0p,"iLLi","")
 BUILTIN(__builtin_HEXAGON_S2_ct1p,"iLLi","")
 BUILTIN(__builtin_HEXAGON_S2_interleave,"LLiLLi","")
 BUILTIN(__builtin_HEXAGON_S2_deinterleave,"LLiLLi","")
+BUILTIN(__builtin_HEXAGON_prefetch,"vv*","")
 BUILTIN(__builtin_HEXAGON_Y2_dccleana,"vv*","")
 BUILTIN(__builtin_HEXAGON_Y2_dccleaninva,"vv*","")
 BUILTIN(__builtin_HEXAGON_Y2_dcinva,"vv*","")
@@ -1470,14 +1470,6 @@ BUILTIN(__builtin_HEXAGON_V6_vassign,"V16iV16i","v:60:")
 BUILTIN(__builtin_HEXAGON_V6_vassign_128B,"V32iV32i","v:60:")
 BUILTIN(__builtin_HEXAGON_V6_vcombine,"V32iV16iV16i","v:60:")
 BUILTIN(__builtin_HEXAGON_V6_vcombine_128B,"V64iV32iV32i","v:60:")
-BUILTIN(__builtin_HEXAGON_V6_vlutb,"V16iV16iLLii","v:60:")
-BUILTIN(__builtin_HEXAGON_V6_vlutb_128B,"V32iV32iLLii","v:60:")
-BUILTIN(__builtin_HEXAGON_V6_vlutb_acc,"V16iV16iV16iLLii","v:60:")
-BUILTIN(__builtin_HEXAGON_V6_vlutb_acc_128B,"V32iV32iV32iLLii","v:60:")
-BUILTIN(__builtin_HEXAGON_V6_vlutb_dv,"V32iV32iLLii","v:60:")
-BUILTIN(__builtin_HEXAGON_V6_vlutb_dv_128B,"V64iV64iLLii","v:60:")
-BUILTIN(__builtin_HEXAGON_V6_vlutb_dv_acc,"V32iV32iV32iLLii","v:60:")
-BUILTIN(__builtin_HEXAGON_V6_vlutb_dv_acc_128B,"V64iV64iV64iLLii","v:60:")
 BUILTIN(__builtin_HEXAGON_V6_vdelta,"V16iV16iV16i","v:60:")
 BUILTIN(__builtin_HEXAGON_V6_vdelta_128B,"V32iV32iV32i","v:60:")
 BUILTIN(__builtin_HEXAGON_V6_vrdelta,"V16iV16iV16i","v:60:")
@@ -1508,4 +1500,216 @@ BUILTIN(__builtin_HEXAGON_V6_lo_128B,"V32iV64i","v:60:")
 BUILTIN(__builtin_HEXAGON_V6_vassignp,"V32iV32i","v:60:")
 BUILTIN(__builtin_HEXAGON_V6_vassignp_128B,"V64iV64i","v:60:")
 
+BUILTIN(__builtin_HEXAGON_V6_vS32b_qpred_ai,"vV16iv*V16i","v:60:")
+BUILTIN(__builtin_HEXAGON_V6_vS32b_nqpred_ai,"vV16iv*V16i","v:60:")
+BUILTIN(__builtin_HEXAGON_V6_vS32b_nt_qpred_ai,"vV16iv*V16i","v:60:")
+BUILTIN(__builtin_HEXAGON_V6_vS32b_nt_nqpred_ai,"vV16iv*V16i","v:60:")
+BUILTIN(__builtin_HEXAGON_V6_vS32b_qpred_ai_128B,"vV32iv*V32i","v:60:")
+BUILTIN(__builtin_HEXAGON_V6_vS32b_nqpred_ai_128B,"vV32iv*V32i","v:60:")
+BUILTIN(__builtin_HEXAGON_V6_vS32b_nt_qpred_ai_128B,"vV32iv*V32i","v:60:")
+BUILTIN(__builtin_HEXAGON_V6_vS32b_nt_nqpred_ai_128B,"vV32iv*V32i","v:60:")
+BUILTIN(__builtin_HEXAGON_V6_vmaskedstoreq,"vV16iv*V16i","v:60:")
+BUILTIN(__builtin_HEXAGON_V6_vmaskedstorenq,"vV16iv*V16i","v:60:")
+BUILTIN(__builtin_HEXAGON_V6_vmaskedstorentq,"vV16iv*V16i","v:60:")
+BUILTIN(__builtin_HEXAGON_V6_vmaskedstorentnq,"vV16iv*V16i","v:60:")
+BUILTIN(__builtin_HEXAGON_V6_vmaskedstoreq_128B,"vV32iv*V32i","v:60:")
+BUILTIN(__builtin_HEXAGON_V6_vmaskedstorenq_128B,"vV32iv*V32i","v:60:")
+BUILTIN(__builtin_HEXAGON_V6_vmaskedstorentq_128B,"vV32iv*V32i","v:60:")
+BUILTIN(__builtin_HEXAGON_V6_vmaskedstorentnq_128B,"vV32iv*V32i","v:60:")
+
+BUILTIN(__builtin_HEXAGON_M6_vabsdiffb,"LLiLLiLLi","v:62:")
+BUILTIN(__builtin_HEXAGON_M6_vabsdiffub,"LLiLLiLLi","v:62:")
+BUILTIN(__builtin_HEXAGON_A6_vminub_RdP,"LLiLLiLLi","v:62:")
+BUILTIN(__builtin_HEXAGON_S6_vsplatrbp,"LLii","v:62:")
+BUILTIN(__builtin_HEXAGON_S6_vtrunehb_ppp,"LLiLLiLLi","v:62:")
+BUILTIN(__builtin_HEXAGON_S6_vtrunohb_ppp,"LLiLLiLLi","v:62:")
+
+BUILTIN(__builtin_HEXAGON_V6_vlsrb,"V16iV16ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vlsrb_128B,"V32iV32ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vasrwuhrndsat,"V16iV16iV16ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vasrwuhrndsat_128B,"V32iV32iV32ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vasruwuhrndsat,"V16iV16iV16ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vasruwuhrndsat_128B,"V32iV32iV32ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vasrhbsat,"V16iV16iV16ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vasrhbsat_128B,"V32iV32iV32ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vrounduwuh,"V16iV16iV16i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vrounduwuh_128B,"V32iV32iV32i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vrounduhub,"V16iV16iV16i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vrounduhub_128B,"V32iV32iV32i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vadduwsat,"V16iV16iV16i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vadduwsat_128B,"V32iV32iV32i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vadduwsat_dv,"V32iV32iV32i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vadduwsat_dv_128B,"V64iV64iV64i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vsubuwsat,"V16iV16iV16i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vsubuwsat_128B,"V32iV32iV32i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vsubuwsat_dv,"V32iV32iV32i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vsubuwsat_dv_128B,"V64iV64iV64i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vaddbsat,"V16iV16iV16i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vaddbsat_128B,"V32iV32iV32i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vaddbsat_dv,"V32iV32iV32i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vaddbsat_dv_128B,"V64iV64iV64i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vsubbsat,"V16iV16iV16i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vsubbsat_128B,"V32iV32iV32i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vsubbsat_dv,"V32iV32iV32i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vsubbsat_dv_128B,"V64iV64iV64i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vaddububb_sat,"V16iV16iV16i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vaddububb_sat_128B,"V32iV32iV32i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vsubububb_sat,"V16iV16iV16i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vsubububb_sat_128B,"V32iV32iV32i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vaddhw_acc,"V32iV32iV16iV16i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vaddhw_acc_128B,"V64iV64iV32iV32i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vadduhw_acc,"V32iV32iV16iV16i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vadduhw_acc_128B,"V64iV64iV32iV32i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vaddubh_acc,"V32iV32iV16iV16i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vaddubh_acc_128B,"V64iV64iV32iV32i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vmpyewuh_64,"V32iV16iV16i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vmpyewuh_64_128B,"V64iV32iV32i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vmpyowh_64_acc,"V32iV32iV16iV16i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vmpyowh_64_acc_128B,"V64iV64iV32iV32i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vmpauhb,"V32iV32ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vmpauhb_128B,"V64iV64ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vmpauhb_acc,"V32iV32iV32ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vmpauhb_acc_128B,"V64iV64iV64ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vmpyiwub,"V16iV16ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vmpyiwub_128B,"V32iV32ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vmpyiwub_acc,"V16iV16iV16ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vmpyiwub_acc_128B,"V32iV32iV32ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vandnqrt,"V16iV16ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vandnqrt_128B,"V32iV32ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vandnqrt_acc,"V16iV16iV16ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vandnqrt_acc_128B,"V32iV32iV32ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vandvqv,"V16iV16iV16i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vandvqv_128B,"V32iV32iV32i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vandvnqv,"V16iV16iV16i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vandvnqv_128B,"V32iV32iV32i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_pred_scalar2v2,"V16ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_pred_scalar2v2_128B,"V32ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_shuffeqw,"V16iV16iV16i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_shuffeqw_128B,"V32iV32iV32i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_shuffeqh,"V16iV16iV16i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_shuffeqh_128B,"V32iV32iV32i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vmaxb,"V16iV16iV16i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vmaxb_128B,"V32iV32iV32i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vminb,"V16iV16iV16i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vminb_128B,"V32iV32iV32i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vsatuwuh,"V16iV16iV16i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vsatuwuh_128B,"V32iV32iV32i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_lvsplath,"V16ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_lvsplath_128B,"V32ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_lvsplatb,"V16ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_lvsplatb_128B,"V32ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vaddclbw,"V16iV16iV16i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vaddclbw_128B,"V32iV32iV32i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vaddclbh,"V16iV16iV16i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vaddclbh_128B,"V32iV32iV32i","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vlutvvbi,"V16iV16iV16ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vlutvvbi_128B,"V32iV32iV32ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vlutvvb_oracci,"V16iV16iV16iV16ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vlutvvb_oracci_128B,"V32iV32iV32iV32ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vlutvwhi,"V32iV16iV16ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vlutvwhi_128B,"V64iV32iV32ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vlutvwh_oracci,"V32iV32iV16iV16ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vlutvwh_oracci_128B,"V64iV64iV32iV32ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vlutvvb_nm,"V16iV16iV16ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vlutvvb_nm_128B,"V32iV32iV32ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vlutvwh_nm,"V32iV16iV16ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vlutvwh_nm_128B,"V64iV32iV32ii","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vaddcarry,"V16iV16iV16iv*","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vaddcarry_128B,"V32iV32iV32iv*","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vsubcarry,"V16iV16iV16iv*","v:62:")
+BUILTIN(__builtin_HEXAGON_V6_vsubcarry_128B,"V32iV32iV32iv*","v:62:")
+
+BUILTIN(__builtin_HEXAGON_A6_vcmpbeq_notany,"iLLiLLi","v:65:")
+BUILTIN(__builtin_HEXAGON_A6_vcmpbeq_notany_128B,"iLLiLLi","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vrmpyub_rtt,"V32iV16iLLi","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vrmpyub_rtt_128B,"V64iV32iLLi","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vrmpyub_rtt_acc,"V32iV32iV16iLLi","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vrmpyub_rtt_acc_128B,"V64iV64iV32iLLi","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vrmpybub_rtt,"V32iV16iLLi","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vrmpybub_rtt_128B,"V64iV32iLLi","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vrmpybub_rtt_acc,"V32iV32iV16iLLi","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vrmpybub_rtt_acc_128B,"V64iV64iV32iLLi","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vasruwuhsat,"V16iV16iV16ii","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vasruwuhsat_128B,"V32iV32iV32ii","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vasruhubsat,"V16iV16iV16ii","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vasruhubsat_128B,"V32iV32iV32ii","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vasruhubrndsat,"V16iV16iV16ii","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vasruhubrndsat_128B,"V32iV32iV32ii","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vaslh_acc,"V16iV16iV16ii","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vaslh_acc_128B,"V32iV32iV32ii","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vasrh_acc,"V16iV16iV16ii","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vasrh_acc_128B,"V32iV32iV32ii","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vavguw,"V16iV16iV16i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vavguw_128B,"V32iV32iV32i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vavguwrnd,"V16iV16iV16i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vavguwrnd_128B,"V32iV32iV32i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vavgb,"V16iV16iV16i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vavgb_128B,"V32iV32iV32i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vavgbrnd,"V16iV16iV16i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vavgbrnd_128B,"V32iV32iV32i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vnavgb,"V16iV16iV16i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vnavgb_128B,"V32iV32iV32i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vabsb,"V16iV16i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vabsb_128B,"V32iV32i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vabsb_sat,"V16iV16i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vabsb_sat_128B,"V32iV32i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vmpabuu,"V32iV32ii","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vmpabuu_128B,"V64iV64ii","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vmpabuu_acc,"V32iV32iV32ii","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vmpabuu_acc_128B,"V64iV64iV64ii","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vmpyh_acc,"V32iV32iV16ii","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vmpyh_acc_128B,"V64iV64iV32ii","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vmpahhsat,"V16iV16iV16iLLi","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vmpahhsat_128B,"V32iV32iV32iLLi","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vmpauhuhsat,"V16iV16iV16iLLi","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vmpauhuhsat_128B,"V32iV32iV32iLLi","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vmpsuhuhsat,"V16iV16iV16iLLi","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vmpsuhuhsat_128B,"V32iV32iV32iLLi","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vlut4,"V16iV16iLLi","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vlut4_128B,"V32iV32iLLi","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vmpyuhe,"V16iV16ii","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vmpyuhe_128B,"V32iV32ii","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vmpyuhe_acc,"V16iV16iV16ii","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vmpyuhe_acc_128B,"V32iV32iV32ii","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vgathermw,"vv*iiV16i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vgathermw_128B,"vv*iiV32i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vgathermh,"vv*iiV16i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vgathermh_128B,"vv*iiV32i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vgathermhw,"vv*iiV32i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vgathermhw_128B,"vv*iiV64i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vgathermwq,"vv*V16iiiV16i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vgathermwq_128B,"vv*V32iiiV32i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vgathermhq,"vv*V16iiiV16i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vgathermhq_128B,"vv*V32iiiV32i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vgathermhwq,"vv*V16iiiV32i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vgathermhwq_128B,"vv*V32iiiV64i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vscattermw,"viiV16iV16i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vscattermw_128B,"viiV32iV32i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vscattermh,"viiV16iV16i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vscattermh_128B,"viiV32iV32i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vscattermw_add,"viiV16iV16i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vscattermw_add_128B,"viiV32iV32i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vscattermh_add,"viiV16iV16i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vscattermh_add_128B,"viiV32iV32i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vscattermwq,"vV16iiiV16iV16i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vscattermwq_128B,"vV32iiiV32iV32i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vscattermhq,"vV16iiiV16iV16i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vscattermhq_128B,"vV32iiiV32iV32i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vscattermhw,"viiV32iV16i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vscattermhw_128B,"viiV64iV32i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vscattermhwq,"vV16iiiV32iV16i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vscattermhwq_128B,"vV32iiiV64iV32i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vscattermhw_add,"viiV32iV16i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vscattermhw_add_128B,"viiV64iV32i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vprefixqb,"V16iV16i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vprefixqb_128B,"V32iV32i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vprefixqh,"V16iV16i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vprefixqh_128B,"V32iV32i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vprefixqw,"V16iV16i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vprefixqw_128B,"V32iV32i","v:65:")
+
+BUILTIN(__builtin_HEXAGON_V6_vdd0,"V32i","v:65:")
+BUILTIN(__builtin_HEXAGON_V6_vdd0_128B,"V64i","v:65:")
+
+
 #undef BUILTIN
diff --git a/include/clang/Basic/BuiltinsNVPTX.def b/include/clang/Basic/BuiltinsNVPTX.def
index afea6cb0f1b25..7bab73a3b110c 100644
--- a/include/clang/Basic/BuiltinsNVPTX.def
+++ b/include/clang/Basic/BuiltinsNVPTX.def
@@ -371,6 +371,9 @@ BUILTIN(__nvvm_bitcast_i2f, "fi", "")
 BUILTIN(__nvvm_bitcast_ll2d, "dLLi", "")
 BUILTIN(__nvvm_bitcast_d2ll, "LLid", "")
 
+// FNS
+TARGET_BUILTIN(__nvvm_fns, "UiUiUii", "n", "ptx60")
+
 // Sync
 
 BUILTIN(__syncthreads, "v", "")
@@ -378,6 +381,9 @@ BUILTIN(__nvvm_bar0_popc, "ii", "")
 BUILTIN(__nvvm_bar0_and, "ii", "")
 BUILTIN(__nvvm_bar0_or, "ii", "")
 BUILTIN(__nvvm_bar_sync, "vi", "n")
+TARGET_BUILTIN(__nvvm_bar_warp_sync, "vUi", "n", "ptx60")
+TARGET_BUILTIN(__nvvm_barrier_sync, "vUi", "n", "ptx60")
+TARGET_BUILTIN(__nvvm_barrier_sync_cnt, "vUiUi", "n", "ptx60")
 
 // Shuffle
 
@@ -390,6 +396,33 @@ BUILTIN(__nvvm_shfl_bfly_f32, "ffii", "")
 BUILTIN(__nvvm_shfl_idx_i32, "iiii", "")
 BUILTIN(__nvvm_shfl_idx_f32, "ffii", "")
 
+TARGET_BUILTIN(__nvvm_shfl_sync_down_i32, "iUiiii", "", "ptx60")
+TARGET_BUILTIN(__nvvm_shfl_sync_down_f32, "fUifii", "", "ptx60")
+TARGET_BUILTIN(__nvvm_shfl_sync_up_i32, "iUiiii", "", "ptx60")
+TARGET_BUILTIN(__nvvm_shfl_sync_up_f32, "fUifii", "", "ptx60")
+TARGET_BUILTIN(__nvvm_shfl_sync_bfly_i32, "iUiiii", "", "ptx60")
+TARGET_BUILTIN(__nvvm_shfl_sync_bfly_f32, "fUifii", "", "ptx60")
+TARGET_BUILTIN(__nvvm_shfl_sync_idx_i32, "iUiiii", "", "ptx60")
+TARGET_BUILTIN(__nvvm_shfl_sync_idx_f32, "fUifii", "", "ptx60")
+
+// Vote
+BUILTIN(__nvvm_vote_all, "bb", "")
+BUILTIN(__nvvm_vote_any, "bb", "")
+BUILTIN(__nvvm_vote_uni, "bb", "")
+BUILTIN(__nvvm_vote_ballot, "Uib", "")
+
+TARGET_BUILTIN(__nvvm_vote_all_sync, "bUib", "", "ptx60")
+TARGET_BUILTIN(__nvvm_vote_any_sync, "bUib", "", "ptx60")
+TARGET_BUILTIN(__nvvm_vote_uni_sync, "bUib", "", "ptx60")
+TARGET_BUILTIN(__nvvm_vote_ballot_sync, "UiUib", "", "ptx60")
+
+// Match
+TARGET_BUILTIN(__nvvm_match_any_sync_i32, "UiUiUi", "", "ptx60")
+TARGET_BUILTIN(__nvvm_match_any_sync_i64, "WiUiWi", "", "ptx60")
+// These return a pair {value, predicate}, which requires custom lowering.
+TARGET_BUILTIN(__nvvm_match_all_sync_i32p, "UiUiUii*", "", "ptx60")
+TARGET_BUILTIN(__nvvm_match_all_sync_i64p, "WiUiWii*", "", "ptx60")
+
 // Membar
 
 BUILTIN(__nvvm_membar_cta, "v", "")
@@ -451,7 +484,7 @@ TARGET_BUILTIN(__nvvm_atom_cta_add_gen_f, "ffD*f", "n", "satom")
 TARGET_BUILTIN(__nvvm_atom_sys_add_gen_f, "ffD*f", "n", "satom")
 BUILTIN(__nvvm_atom_add_g_d, "ddD*1d", "n")
 BUILTIN(__nvvm_atom_add_s_d, "ddD*3d", "n")
-BUILTIN(__nvvm_atom_add_gen_d, "ddD*d", "n")
+TARGET_BUILTIN(__nvvm_atom_add_gen_d, "ddD*d", "n", "satom")
 TARGET_BUILTIN(__nvvm_atom_cta_add_gen_d, "ddD*d", "n", "satom")
 TARGET_BUILTIN(__nvvm_atom_sys_add_gen_d, "ddD*d", "n", "satom")
 
@@ -658,5 +691,18 @@ BUILTIN(__nvvm_ldg_f2, "E2fE2fC*", "")
 BUILTIN(__nvvm_ldg_f4, "E4fE4fC*", "")
 BUILTIN(__nvvm_ldg_d2, "E2dE2dC*", "")
 
+// Builtins to support WMMA instructions on sm_70
+TARGET_BUILTIN(__hmma_m16n16k16_ld_a, "vi*iC*UiIi", "", "ptx60")
+TARGET_BUILTIN(__hmma_m16n16k16_ld_b, "vi*iC*UiIi", "", "ptx60")
+TARGET_BUILTIN(__hmma_m16n16k16_ld_c_f16, "vi*iC*UiIi", "", "ptx60")
+TARGET_BUILTIN(__hmma_m16n16k16_ld_c_f32, "vf*fC*UiIi", "", "ptx60")
+TARGET_BUILTIN(__hmma_m16n16k16_st_c_f16, "vi*i*UiIi", "", "ptx60")
+TARGET_BUILTIN(__hmma_m16n16k16_st_c_f32, "vf*f*UiIi", "", "ptx60")
+
+TARGET_BUILTIN(__hmma_m16n16k16_mma_f16f16, "vi*iC*iC*iC*IiIi", "", "ptx60")
+TARGET_BUILTIN(__hmma_m16n16k16_mma_f32f16, "vf*iC*iC*iC*IiIi", "", "ptx60")
+TARGET_BUILTIN(__hmma_m16n16k16_mma_f32f32, "vf*iC*iC*fC*IiIi", "", "ptx60")
+TARGET_BUILTIN(__hmma_m16n16k16_mma_f16f32, "vi*iC*iC*fC*IiIi", "", "ptx60")
+
 #undef BUILTIN
 #undef TARGET_BUILTIN
diff --git a/include/clang/Basic/BuiltinsX86.def b/include/clang/Basic/BuiltinsX86.def
index 2f8f8919e5b30..d0be48467f1f0 100644
--- a/include/clang/Basic/BuiltinsX86.def
+++ b/include/clang/Basic/BuiltinsX86.def
@@ -32,7 +32,9 @@
 // Miscellaneous builtin for checking x86 cpu features.
 // TODO: Make this somewhat generic so that other backends
 // can use it?
+BUILTIN(__builtin_cpu_init, "v", "n")
 BUILTIN(__builtin_cpu_supports, "bcC*", "nc")
+BUILTIN(__builtin_cpu_is, "bcC*", "nc")
 
 // Undefined Values
 //
@@ -264,8 +266,6 @@ TARGET_BUILTIN(__builtin_ia32_paddusw128, "V8sV8sV8s", "", "sse2")
 TARGET_BUILTIN(__builtin_ia32_psubusb128, "V16cV16cV16c", "", "sse2")
 TARGET_BUILTIN(__builtin_ia32_psubusw128, "V8sV8sV8s", "", "sse2")
 TARGET_BUILTIN(__builtin_ia32_pmulhw128, "V8sV8sV8s", "", "sse2")
-TARGET_BUILTIN(__builtin_ia32_pavgb128, "V16cV16cV16c", "", "sse2")
-TARGET_BUILTIN(__builtin_ia32_pavgw128, "V8sV8sV8s", "", "sse2")
 TARGET_BUILTIN(__builtin_ia32_pmaxub128, "V16cV16cV16c", "", "sse2")
 TARGET_BUILTIN(__builtin_ia32_pmaxsw128, "V8sV8sV8s", "", "sse2")
 TARGET_BUILTIN(__builtin_ia32_pminub128, "V16cV16cV16c", "", "sse2")
@@ -520,8 +520,6 @@ TARGET_BUILTIN(__builtin_ia32_paddusw256, "V16sV16sV16s", "", "avx2")
 TARGET_BUILTIN(__builtin_ia32_psubusb256, "V32cV32cV32c", "", "avx2")
 TARGET_BUILTIN(__builtin_ia32_psubusw256, "V16sV16sV16s", "", "avx2")
 TARGET_BUILTIN(__builtin_ia32_palignr256, "V32cV32cV32cIi", "", "avx2")
-TARGET_BUILTIN(__builtin_ia32_pavgb256, "V32cV32cV32c", "", "avx2")
-TARGET_BUILTIN(__builtin_ia32_pavgw256, "V16sV16sV16s", "", "avx2")
 TARGET_BUILTIN(__builtin_ia32_pblendvb256, "V32cV32cV32cV32c", "", "avx2")
 TARGET_BUILTIN(__builtin_ia32_phaddw256, "V16sV16sV16s", "", "avx2")
 TARGET_BUILTIN(__builtin_ia32_phaddd256, "V8iV8iV8i", "", "avx2")
@@ -640,8 +638,21 @@ TARGET_BUILTIN(__builtin_ia32_xrstors, "vv*ULLi", "", "xsaves")
 TARGET_BUILTIN(__builtin_ia32_xsavec, "vv*ULLi", "", "xsavec")
 TARGET_BUILTIN(__builtin_ia32_xsaves, "vv*ULLi", "", "xsaves")
 
+// SHSTK
+TARGET_BUILTIN(__builtin_ia32_incsspd, "vUi", "u", "shstk")
+TARGET_BUILTIN(__builtin_ia32_rdsspd, "UiUi", "Un", "shstk")
+TARGET_BUILTIN(__builtin_ia32_saveprevssp, "v", "", "shstk")
+TARGET_BUILTIN(__builtin_ia32_rstorssp, "vv*", "", "shstk")
+TARGET_BUILTIN(__builtin_ia32_wrssd, "vUiv*", "", "shstk")
+TARGET_BUILTIN(__builtin_ia32_wrussd, "vUiv*", "", "shstk")
+TARGET_BUILTIN(__builtin_ia32_setssbsy, "v", "", "shstk")
+TARGET_BUILTIN(__builtin_ia32_clrssbsy, "vv*", "", "shstk")
+
 //CLFLUSHOPT
-TARGET_BUILTIN(__builtin_ia32_clflushopt, "vc*", "", "clflushopt")
+TARGET_BUILTIN(__builtin_ia32_clflushopt, "vvC*", "", "clflushopt")
+
+//CLWB
+TARGET_BUILTIN(__builtin_ia32_clwb, "vvC*", "", "clwb")
 
 // ADX
 TARGET_BUILTIN(__builtin_ia32_addcarryx_u32, "UcUcUiUiUi*", "", "adx")
@@ -681,36 +692,18 @@ TARGET_BUILTIN(__builtin_ia32_sha256msg2, "V4iV4iV4i", "", "sha")
 // FMA
 TARGET_BUILTIN(__builtin_ia32_vfmaddps, "V4fV4fV4fV4f", "", "fma|fma4")
 TARGET_BUILTIN(__builtin_ia32_vfmaddpd, "V2dV2dV2dV2d", "", "fma|fma4")
-TARGET_BUILTIN(__builtin_ia32_vfmaddss, "V4fV4fV4fV4f", "", "fma|fma4")
-TARGET_BUILTIN(__builtin_ia32_vfmaddsd, "V2dV2dV2dV2d", "", "fma|fma4")
-TARGET_BUILTIN(__builtin_ia32_vfmsubps, "V4fV4fV4fV4f", "", "fma|fma4")
-TARGET_BUILTIN(__builtin_ia32_vfmsubpd, "V2dV2dV2dV2d", "", "fma|fma4")
-TARGET_BUILTIN(__builtin_ia32_vfmsubss, "V4fV4fV4fV4f", "", "fma|fma4")
-TARGET_BUILTIN(__builtin_ia32_vfmsubsd, "V2dV2dV2dV2d", "", "fma|fma4")
-TARGET_BUILTIN(__builtin_ia32_vfnmaddps, "V4fV4fV4fV4f", "", "fma|fma4")
-TARGET_BUILTIN(__builtin_ia32_vfnmaddpd, "V2dV2dV2dV2d", "", "fma|fma4")
-TARGET_BUILTIN(__builtin_ia32_vfnmaddss, "V4fV4fV4fV4f", "", "fma|fma4")
-TARGET_BUILTIN(__builtin_ia32_vfnmaddsd, "V2dV2dV2dV2d", "", "fma|fma4")
-TARGET_BUILTIN(__builtin_ia32_vfnmsubps, "V4fV4fV4fV4f", "", "fma|fma4")
-TARGET_BUILTIN(__builtin_ia32_vfnmsubpd, "V2dV2dV2dV2d", "", "fma|fma4")
-TARGET_BUILTIN(__builtin_ia32_vfnmsubss, "V4fV4fV4fV4f", "", "fma|fma4")
-TARGET_BUILTIN(__builtin_ia32_vfnmsubsd, "V2dV2dV2dV2d", "", "fma|fma4")
+TARGET_BUILTIN(__builtin_ia32_vfmaddss3, "V4fV4fV4fV4f", "", "fma")
+TARGET_BUILTIN(__builtin_ia32_vfmaddsd3, "V2dV2dV2dV2d", "", "fma")
+TARGET_BUILTIN(__builtin_ia32_vfmaddss, "V4fV4fV4fV4f", "", "fma4")
+TARGET_BUILTIN(__builtin_ia32_vfmaddsd, "V2dV2dV2dV2d", "", "fma4")
 TARGET_BUILTIN(__builtin_ia32_vfmaddsubps, "V4fV4fV4fV4f", "", "fma|fma4")
 TARGET_BUILTIN(__builtin_ia32_vfmaddsubpd, "V2dV2dV2dV2d", "", "fma|fma4")
-TARGET_BUILTIN(__builtin_ia32_vfmsubaddps, "V4fV4fV4fV4f", "", "fma|fma4")
-TARGET_BUILTIN(__builtin_ia32_vfmsubaddpd, "V2dV2dV2dV2d", "", "fma|fma4")
 TARGET_BUILTIN(__builtin_ia32_vfmaddps256, "V8fV8fV8fV8f", "", "fma|fma4")
 TARGET_BUILTIN(__builtin_ia32_vfmaddpd256, "V4dV4dV4dV4d", "", "fma|fma4")
-TARGET_BUILTIN(__builtin_ia32_vfmsubps256, "V8fV8fV8fV8f", "", "fma|fma4")
-TARGET_BUILTIN(__builtin_ia32_vfmsubpd256, "V4dV4dV4dV4d", "", "fma|fma4")
 TARGET_BUILTIN(__builtin_ia32_vfnmaddps256, "V8fV8fV8fV8f", "", "fma|fma4")
 TARGET_BUILTIN(__builtin_ia32_vfnmaddpd256, "V4dV4dV4dV4d", "", "fma|fma4")
-TARGET_BUILTIN(__builtin_ia32_vfnmsubps256, "V8fV8fV8fV8f", "", "fma|fma4")
-TARGET_BUILTIN(__builtin_ia32_vfnmsubpd256, "V4dV4dV4dV4d", "", "fma|fma4")
 TARGET_BUILTIN(__builtin_ia32_vfmaddsubps256, "V8fV8fV8fV8f", "", "fma|fma4")
 TARGET_BUILTIN(__builtin_ia32_vfmaddsubpd256, "V4dV4dV4dV4d", "", "fma|fma4")
-TARGET_BUILTIN(__builtin_ia32_vfmsubaddps256, "V8fV8fV8fV8f", "", "fma|fma4")
-TARGET_BUILTIN(__builtin_ia32_vfmsubaddpd256, "V4dV4dV4dV4d", "", "fma|fma4")
 
 TARGET_BUILTIN(__builtin_ia32_vfmaddpd128_mask, "V2dV2dV2dV2dUc", "", "avx512vl")
 TARGET_BUILTIN(__builtin_ia32_vfmaddpd128_mask3, "V2dV2dV2dV2dUc", "", "avx512vl")
@@ -909,39 +902,10 @@ TARGET_BUILTIN(__builtin_ia32_cvttps2dq512_mask, "V16iV16fV16iUsIi", "", "avx512
 TARGET_BUILTIN(__builtin_ia32_cvttps2udq512_mask, "V16iV16fV16iUsIi", "", "avx512f")
 TARGET_BUILTIN(__builtin_ia32_cvttpd2dq512_mask, "V8iV8dV8iUcIi", "", "avx512f")
 TARGET_BUILTIN(__builtin_ia32_cvttpd2udq512_mask, "V8iV8dV8iUcIi", "", "avx512f")
-TARGET_BUILTIN(__builtin_ia32_cmpps512_mask,   "UsV16fV16fIiUsIi", "", "avx512f")
 
+TARGET_BUILTIN(__builtin_ia32_cmpps512_mask,   "UsV16fV16fIiUsIi", "", "avx512f")
 TARGET_BUILTIN(__builtin_ia32_cmpps256_mask,   "UcV8fV8fIiUc", "", "avx512vl")
 TARGET_BUILTIN(__builtin_ia32_cmpps128_mask,   "UcV4fV4fIiUc", "", "avx512vl")
-
-TARGET_BUILTIN(__builtin_ia32_pcmpeqb512_mask, "LLiV64cV64cLLi", "", "avx512bw")
-TARGET_BUILTIN(__builtin_ia32_pcmpeqd512_mask, "sV16iV16is", "", "avx512f")
-TARGET_BUILTIN(__builtin_ia32_pcmpeqq512_mask, "cV8LLiV8LLic", "", "avx512f")
-TARGET_BUILTIN(__builtin_ia32_pcmpeqw512_mask, "iV32sV32si", "", "avx512bw")
-
-TARGET_BUILTIN(__builtin_ia32_pcmpeqb256_mask, "iV32cV32ci", "", "avx512vl,avx512bw")
-TARGET_BUILTIN(__builtin_ia32_pcmpeqd256_mask, "cV8iV8ic", "", "avx512vl")
-TARGET_BUILTIN(__builtin_ia32_pcmpeqq256_mask, "cV4LLiV4LLic", "", "avx512vl")
-TARGET_BUILTIN(__builtin_ia32_pcmpeqw256_mask, "sV16sV16ss", "", "avx512vl,avx512bw")
-TARGET_BUILTIN(__builtin_ia32_pcmpeqb128_mask, "sV16cV16cs", "", "avx512vl,avx512bw")
-TARGET_BUILTIN(__builtin_ia32_pcmpeqd128_mask, "cV4iV4ic", "", "avx512vl")
-TARGET_BUILTIN(__builtin_ia32_pcmpeqq128_mask, "cV2LLiV2LLic", "", "avx512vl")
-TARGET_BUILTIN(__builtin_ia32_pcmpeqw128_mask, "cV8sV8sc", "", "avx512vl,avx512bw")
-
-TARGET_BUILTIN(__builtin_ia32_pcmpgtb512_mask, "LLiV64cV64cLLi", "", "avx512bw")
-TARGET_BUILTIN(__builtin_ia32_pcmpgtd512_mask, "sV16iV16is", "", "avx512f")
-TARGET_BUILTIN(__builtin_ia32_pcmpgtq512_mask, "cV8LLiV8LLic", "", "avx512f")
-TARGET_BUILTIN(__builtin_ia32_pcmpgtw512_mask, "iV32sV32si", "", "avx512bw")
-
-TARGET_BUILTIN(__builtin_ia32_pcmpgtb256_mask, "iV32cV32ci", "", "avx512vl,avx512bw")
-TARGET_BUILTIN(__builtin_ia32_pcmpgtd256_mask, "cV8iV8ic", "", "avx512vl")
-TARGET_BUILTIN(__builtin_ia32_pcmpgtq256_mask, "cV4LLiV4LLic", "", "avx512vl")
-TARGET_BUILTIN(__builtin_ia32_pcmpgtw256_mask, "sV16sV16ss", "", "avx512vl,avx512bw")
-TARGET_BUILTIN(__builtin_ia32_pcmpgtb128_mask, "sV16cV16cs", "", "avx512vl,avx512bw")
-TARGET_BUILTIN(__builtin_ia32_pcmpgtd128_mask, "cV4iV4ic", "", "avx512vl")
-TARGET_BUILTIN(__builtin_ia32_pcmpgtq128_mask, "cV2LLiV2LLic", "", "avx512vl")
-TARGET_BUILTIN(__builtin_ia32_pcmpgtw128_mask, "cV8sV8sc", "", "avx512vl,avx512bw")
-
 TARGET_BUILTIN(__builtin_ia32_cmppd512_mask, "UcV8dV8dIiUcIi", "", "avx512f")
 TARGET_BUILTIN(__builtin_ia32_cmppd256_mask, "UcV4dV4dIiUc", "", "avx512vl")
 TARGET_BUILTIN(__builtin_ia32_cmppd128_mask, "UcV2dV2dIiUc", "", "avx512vl")
@@ -973,9 +937,6 @@ TARGET_BUILTIN(__builtin_ia32_pminud512_mask, "V16iV16iV16iV16iUs", "", "avx512f
 TARGET_BUILTIN(__builtin_ia32_pminuq512_mask, "V8LLiV8LLiV8LLiV8LLiUc", "", "avx512f")
 TARGET_BUILTIN(__builtin_ia32_pmuldq512, "V8LLiV16iV16i", "", "avx512f")
 TARGET_BUILTIN(__builtin_ia32_pmuludq512, "V8LLiV16iV16i", "", "avx512f")
-TARGET_BUILTIN(__builtin_ia32_ptestmd512, "UsV16iV16iUs", "", "avx512f")
-TARGET_BUILTIN(__builtin_ia32_ptestmq512, "UcV8LLiV8LLiUc", "", "avx512f")
-TARGET_BUILTIN(__builtin_ia32_pbroadcastd512_gpr_mask, "V16iiV16iUs", "", "avx512f")
 TARGET_BUILTIN(__builtin_ia32_loaddqusi512_mask, "V16iiC*V16iUs", "", "avx512f")
 TARGET_BUILTIN(__builtin_ia32_loaddqudi512_mask, "V8LLiLLiC*V8LLiUc", "", "avx512f")
 TARGET_BUILTIN(__builtin_ia32_loadups512_mask, "V16ffC*V16fUs", "", "avx512f")
@@ -1072,8 +1033,6 @@ TARGET_BUILTIN(__builtin_ia32_paddsb512_mask, "V64cV64cV64cV64cULLi", "", "avx51
 TARGET_BUILTIN(__builtin_ia32_paddsw512_mask, "V32sV32sV32sV32sUi", "", "avx512bw")
 TARGET_BUILTIN(__builtin_ia32_paddusb512_mask, "V64cV64cV64cV64cULLi", "", "avx512bw")
 TARGET_BUILTIN(__builtin_ia32_paddusw512_mask, "V32sV32sV32sV32sUi", "", "avx512bw")
-TARGET_BUILTIN(__builtin_ia32_pavgb512_mask, "V64cV64cV64cV64cULLi", "", "avx512bw")
-TARGET_BUILTIN(__builtin_ia32_pavgw512_mask, "V32sV32sV32sV32sUi", "", "avx512bw")
 TARGET_BUILTIN(__builtin_ia32_pmaxsb512_mask, "V64cV64cV64cV64cULLi", "", "avx512bw")
 TARGET_BUILTIN(__builtin_ia32_pmaxsw512_mask, "V32sV32sV32sV32sUi", "", "avx512bw")
 TARGET_BUILTIN(__builtin_ia32_pmaxub512_mask, "V64cV64cV64cV64cULLi", "", "avx512bw")
@@ -1101,6 +1060,10 @@ TARGET_BUILTIN(__builtin_ia32_vpconflictsi_512_mask, "V16iV16iV16iUs", "", "avx5
 TARGET_BUILTIN(__builtin_ia32_vplzcntd_512_mask, "V16iV16iV16iUs", "", "avx512cd")
 TARGET_BUILTIN(__builtin_ia32_vplzcntq_512_mask, "V8LLiV8LLiV8LLiUc", "", "avx512cd")
 
+TARGET_BUILTIN(__builtin_ia32_vpopcntd_128, "V4iV4i", "", "avx512vpopcntdq,avx512vl")
+TARGET_BUILTIN(__builtin_ia32_vpopcntq_128, "V2LLiV2LLi", "", "avx512vpopcntdq,avx512vl")
+TARGET_BUILTIN(__builtin_ia32_vpopcntd_256, "V8iV8i", "", "avx512vpopcntdq,avx512vl")
+TARGET_BUILTIN(__builtin_ia32_vpopcntq_256, "V4LLiV4LLi", "", "avx512vpopcntdq,avx512vl")
 TARGET_BUILTIN(__builtin_ia32_vpopcntd_512, "V16iV16i", "", "avx512vpopcntdq")
 TARGET_BUILTIN(__builtin_ia32_vpopcntq_512, "V8LLiV8LLi", "", "avx512vpopcntdq")
 
@@ -1378,11 +1341,6 @@ TARGET_BUILTIN(__builtin_ia32_movdqa64load128_mask, "V2LLiV2LLiC*V2LLiUc","","av
 TARGET_BUILTIN(__builtin_ia32_movdqa64load256_mask, "V4LLiV4LLiC*V4LLiUc","","avx512vl")
 TARGET_BUILTIN(__builtin_ia32_movdqa64store128_mask, "vV2LLi*V2LLiUc","","avx512f")
 TARGET_BUILTIN(__builtin_ia32_movdqa64store256_mask, "vV4LLi*V4LLiUc","","avx512f")
-TARGET_BUILTIN(__builtin_ia32_pbroadcastb512_gpr_mask, "V64ccV64cULLi","","avx512bw")
-TARGET_BUILTIN(__builtin_ia32_pbroadcastb128_gpr_mask, "V16ccV16cUs","","avx512bw,avx512vl")
-TARGET_BUILTIN(__builtin_ia32_pbroadcastb256_gpr_mask, "V32ccV32cUi","","avx512bw,avx512vl")
-TARGET_BUILTIN(__builtin_ia32_pbroadcastd128_gpr_mask, "V4iiV4iUc","","avx512vl")
-TARGET_BUILTIN(__builtin_ia32_pbroadcastd256_gpr_mask, "V8iiV8iUc","","avx512vl")
 TARGET_BUILTIN(__builtin_ia32_vpmadd52huq512_mask, "V8LLiV8LLiV8LLiV8LLiUc","","avx512ifma")
 TARGET_BUILTIN(__builtin_ia32_vpmadd52huq512_maskz, "V8LLiV8LLiV8LLiV8LLiUc","","avx512ifma")
 TARGET_BUILTIN(__builtin_ia32_vpmadd52luq512_mask, "V8LLiV8LLiV8LLiV8LLiUc","","avx512ifma")
@@ -1494,28 +1452,6 @@ TARGET_BUILTIN(__builtin_ia32_vpermt2vard512_maskz, "V16iV16iV16iV16iUs","","avx
 TARGET_BUILTIN(__builtin_ia32_vpermt2varpd512_maskz, "V8dV8LLiV8dV8dUc","","avx512f")
 TARGET_BUILTIN(__builtin_ia32_vpermt2varps512_maskz, "V16fV16iV16fV16fUs","","avx512f")
 TARGET_BUILTIN(__builtin_ia32_vpermt2varq512_maskz, "V8LLiV8LLiV8LLiV8LLiUc","","avx512f")
-TARGET_BUILTIN(__builtin_ia32_ptestmb512, "ULLiV64cV64cULLi","","avx512bw")
-TARGET_BUILTIN(__builtin_ia32_ptestmw512, "UiV32sV32sUi","","avx512bw")
-TARGET_BUILTIN(__builtin_ia32_ptestnmb512, "ULLiV64cV64cULLi","","avx512bw")
-TARGET_BUILTIN(__builtin_ia32_ptestnmw512, "UiV32sV32sUi","","avx512bw")
-TARGET_BUILTIN(__builtin_ia32_ptestmb128, "UsV16cV16cUs","","avx512bw,avx512vl")
-TARGET_BUILTIN(__builtin_ia32_ptestmb256, "UiV32cV32cUi","","avx512bw,avx512vl")
-TARGET_BUILTIN(__builtin_ia32_ptestmw128, "UcV8sV8sUc","","avx512bw,avx512vl")
-TARGET_BUILTIN(__builtin_ia32_ptestmw256, "UsV16sV16sUs","","avx512bw,avx512vl")
-TARGET_BUILTIN(__builtin_ia32_ptestnmb128, "UsV16cV16cUs","","avx512bw,avx512vl")
-TARGET_BUILTIN(__builtin_ia32_ptestnmb256, "UiV32cV32cUi","","avx512bw,avx512vl")
-TARGET_BUILTIN(__builtin_ia32_ptestnmw128, "UcV8sV8sUc","","avx512bw,avx512vl")
-TARGET_BUILTIN(__builtin_ia32_ptestnmw256, "UsV16sV16sUs","","avx512bw,avx512vl")
-TARGET_BUILTIN(__builtin_ia32_ptestmd128, "UcV4iV4iUc","","avx512vl")
-TARGET_BUILTIN(__builtin_ia32_ptestmd256, "UcV8iV8iUc","","avx512vl")
-TARGET_BUILTIN(__builtin_ia32_ptestmq128, "UcV2LLiV2LLiUc","","avx512vl")
-TARGET_BUILTIN(__builtin_ia32_ptestmq256, "UcV4LLiV4LLiUc","","avx512vl")
-TARGET_BUILTIN(__builtin_ia32_ptestnmd128, "UcV4iV4iUc","","avx512vl")
-TARGET_BUILTIN(__builtin_ia32_ptestnmd256, "UcV8iV8iUc","","avx512vl")
-TARGET_BUILTIN(__builtin_ia32_ptestnmq128, "UcV2LLiV2LLiUc","","avx512vl")
-TARGET_BUILTIN(__builtin_ia32_ptestnmq256, "UcV4LLiV4LLiUc","","avx512vl")
-TARGET_BUILTIN(__builtin_ia32_ptestnmd512, "UsV16iV16iUs","","avx512f")
-TARGET_BUILTIN(__builtin_ia32_ptestnmq512, "UcV8LLiV8LLiUc","","avx512f")
 TARGET_BUILTIN(__builtin_ia32_rndscalesd_round_mask, "V2dV2dV2dV2dUcIiIi","","avx512f")
 TARGET_BUILTIN(__builtin_ia32_rndscaless_round_mask, "V4fV4fV4fV4fUcIiIi","","avx512f")
 TARGET_BUILTIN(__builtin_ia32_scalefpd512_mask, "V8dV8dV8dV8dUcIi","","avx512f")
@@ -1587,20 +1523,6 @@ TARGET_BUILTIN(__builtin_ia32_cvtmask2q128, "V2LLiUc","","avx512dq,avx512vl")
 TARGET_BUILTIN(__builtin_ia32_cvtmask2q256, "V4LLiUc","","avx512dq,avx512vl")
 TARGET_BUILTIN(__builtin_ia32_cvtq2mask128, "UcV2LLi","","avx512dq,avx512vl")
 TARGET_BUILTIN(__builtin_ia32_cvtq2mask256, "UcV4LLi","","avx512dq,avx512vl")
-TARGET_BUILTIN(__builtin_ia32_broadcastmb512, "V8LLiUc","","avx512cd")
-TARGET_BUILTIN(__builtin_ia32_broadcastmw512, "V16iUs","","avx512cd")
-TARGET_BUILTIN(__builtin_ia32_broadcastmb128, "V2LLiUc","","avx512cd,avx512vl")
-TARGET_BUILTIN(__builtin_ia32_broadcastmb256, "V4LLiUc","","avx512cd,avx512vl")
-TARGET_BUILTIN(__builtin_ia32_broadcastmw128, "V4iUs","","avx512cd,avx512vl")
-TARGET_BUILTIN(__builtin_ia32_broadcastmw256, "V8iUs","","avx512cd,avx512vl")
-TARGET_BUILTIN(__builtin_ia32_broadcastf32x2_512_mask, "V16fV4fV16fUs","","avx512dq")
-TARGET_BUILTIN(__builtin_ia32_broadcasti32x2_512_mask, "V16iV4iV16iUs","","avx512dq")
-TARGET_BUILTIN(__builtin_ia32_broadcastf32x2_256_mask, "V8fV4fV8fUc","","avx512dq,avx512vl")
-TARGET_BUILTIN(__builtin_ia32_broadcasti32x2_128_mask, "V4iV4iV4iUc","","avx512dq,avx512vl")
-TARGET_BUILTIN(__builtin_ia32_broadcasti32x2_256_mask, "V8iV4iV8iUc","","avx512dq,avx512vl")
-TARGET_BUILTIN(__builtin_ia32_pbroadcastw512_gpr_mask, "V32shV32sUi","","avx512bw")
-TARGET_BUILTIN(__builtin_ia32_pbroadcastw256_gpr_mask, "V16shV16sUs","","avx512bw,avx512vl")
-TARGET_BUILTIN(__builtin_ia32_pbroadcastw128_gpr_mask, "V8ssV8sUc","","avx512bw,avx512vl")
 TARGET_BUILTIN(__builtin_ia32_pmovsdb512_mask, "V16cV16iV16cUs","","avx512f")
 TARGET_BUILTIN(__builtin_ia32_pmovsdb512mem_mask, "vV16c*V16iUs","","avx512f")
 TARGET_BUILTIN(__builtin_ia32_pmovswb512mem_mask, "vV32c*V32sUi","","avx512bw")
diff --git a/include/clang/Basic/BuiltinsX86_64.def b/include/clang/Basic/BuiltinsX86_64.def
index 4cde153d83722..fe2c887c7e0f5 100644
--- a/include/clang/Basic/BuiltinsX86_64.def
+++ b/include/clang/Basic/BuiltinsX86_64.def
@@ -40,6 +40,7 @@ TARGET_HEADER_BUILTIN(_InterlockedExchangeSub64, "LLiLLiD*LLi", "nh", "intrin.h"
 TARGET_HEADER_BUILTIN(_InterlockedIncrement64,   "LLiLLiD*",    "nh", "intrin.h", ALL_MS_LANGUAGES, "")
 TARGET_HEADER_BUILTIN(_InterlockedOr64,          "LLiLLiD*LLi", "nh", "intrin.h", ALL_MS_LANGUAGES, "")
 TARGET_HEADER_BUILTIN(_InterlockedXor64,         "LLiLLiD*LLi", "nh", "intrin.h", ALL_MS_LANGUAGES, "")
+TARGET_HEADER_BUILTIN(_InterlockedCompareExchange128, "UcLLiD*LLiLLiLLi*", "nh", "intrin.h", ALL_MS_LANGUAGES, "cx16")
 
 TARGET_BUILTIN(__builtin_ia32_readeflags_u64, "ULLi", "n", "")
 TARGET_BUILTIN(__builtin_ia32_writeeflags_u64, "vULLi", "n", "")
@@ -60,6 +61,10 @@ TARGET_BUILTIN(__builtin_ia32_xsaveopt64, "vv*ULLi", "", "xsaveopt")
 TARGET_BUILTIN(__builtin_ia32_xrstors64, "vv*ULLi", "", "xsaves")
 TARGET_BUILTIN(__builtin_ia32_xsavec64, "vv*ULLi", "", "xsavec")
 TARGET_BUILTIN(__builtin_ia32_xsaves64, "vv*ULLi", "", "xsaves")
+TARGET_BUILTIN(__builtin_ia32_incsspq, "vULLi", "u", "shstk")
+TARGET_BUILTIN(__builtin_ia32_rdsspq, "ULLiULLi", "Un", "shstk")
+TARGET_BUILTIN(__builtin_ia32_wrssq, "vULLiv*", "", "shstk")
+TARGET_BUILTIN(__builtin_ia32_wrussq, "vULLiv*", "", "shstk")
 TARGET_BUILTIN(__builtin_ia32_addcarryx_u64, "UcUcULLiULLiULLi*", "", "adx")
 TARGET_BUILTIN(__builtin_ia32_addcarry_u64, "UcUcULLiULLiULLi*", "", "")
 TARGET_BUILTIN(__builtin_ia32_subborrow_u64, "UcUcULLiULLiULLi*", "", "")
@@ -71,9 +76,6 @@ TARGET_BUILTIN(__builtin_ia32_pext_di, "ULLiULLiULLi", "", "bmi2")
 TARGET_BUILTIN(__builtin_ia32_bextri_u64, "ULLiULLiIULLi", "", "tbm")
 TARGET_BUILTIN(__builtin_ia32_lwpins64, "UcULLiUiUi", "", "lwp")
 TARGET_BUILTIN(__builtin_ia32_lwpval64, "vULLiUiUi", "", "lwp")
-TARGET_BUILTIN(__builtin_ia32_pbroadcastq512_gpr_mask, "V8LLiLLiV8LLiUc", "", "avx512f")
-TARGET_BUILTIN(__builtin_ia32_pbroadcastq128_gpr_mask, "V2LLiULLiV2LLiUc","","avx512vl")
-TARGET_BUILTIN(__builtin_ia32_pbroadcastq256_gpr_mask, "V4LLiULLiV4LLiUc","","avx512vl")
 TARGET_BUILTIN(__builtin_ia32_vcvtsd2si64, "LLiV2dIi","","avx512f")
 TARGET_BUILTIN(__builtin_ia32_vcvtsd2usi64, "ULLiV2dIi","","avx512f")
 TARGET_BUILTIN(__builtin_ia32_vcvtss2si64, "LLiV4fIi","","avx512f")
diff --git a/include/clang/Basic/CMakeLists.txt b/include/clang/Basic/CMakeLists.txt
index 3e0fb8728c483..821c405913c8b 100644
--- a/include/clang/Basic/CMakeLists.txt
+++ b/include/clang/Basic/CMakeLists.txt
@@ -9,10 +9,12 @@ clang_diag_gen(Analysis)
 clang_diag_gen(AST)
 clang_diag_gen(Comment)
 clang_diag_gen(Common)
+clang_diag_gen(CrossTU)
 clang_diag_gen(Driver)
 clang_diag_gen(Frontend)
 clang_diag_gen(Lex)
 clang_diag_gen(Parse)
+clang_diag_gen(Refactoring)
 clang_diag_gen(Sema)
 clang_diag_gen(Serialization)
 clang_tablegen(DiagnosticGroups.inc -gen-clang-diag-groups
diff --git a/include/clang/Basic/CharInfo.h b/include/clang/Basic/CharInfo.h
index dd9c55431e015..cc27bbb48e0d1 100644
--- a/include/clang/Basic/CharInfo.h
+++ b/include/clang/Basic/CharInfo.h
@@ -40,14 +40,14 @@ namespace charinfo {
 } // end namespace charinfo
 
 /// Returns true if this is an ASCII character.
-LLVM_READNONE static inline bool isASCII(char c) {
+LLVM_READNONE inline bool isASCII(char c) {
   return static_cast<unsigned char>(c) <= 127;
 }
 
 /// Returns true if this is a valid first character of a C identifier,
 /// which is [a-zA-Z_].
-LLVM_READONLY static inline bool isIdentifierHead(unsigned char c,
-                                                  bool AllowDollar = false) {
+LLVM_READONLY inline bool isIdentifierHead(unsigned char c,
+                                           bool AllowDollar = false) {
   using namespace charinfo;
   if (InfoTable[c] & (CHAR_UPPER|CHAR_LOWER|CHAR_UNDER))
     return true;
@@ -56,8 +56,8 @@ LLVM_READONLY static inline bool isIdentifierHead(unsigned char c,
 
 /// Returns true if this is a body character of a C identifier,
 /// which is [a-zA-Z0-9_].
-LLVM_READONLY static inline bool isIdentifierBody(unsigned char c,
-                                                  bool AllowDollar = false) {
+LLVM_READONLY inline bool isIdentifierBody(unsigned char c,
+                                           bool AllowDollar = false) {
   using namespace charinfo;
   if (InfoTable[c] & (CHAR_UPPER|CHAR_LOWER|CHAR_DIGIT|CHAR_UNDER))
     return true;
@@ -68,7 +68,7 @@ LLVM_READONLY static inline bool isIdentifierBody(unsigned char c,
 /// ' ', '\\t', '\\f', '\\v'.
 ///
 /// Note that this returns false for '\\0'.
-LLVM_READONLY static inline bool isHorizontalWhitespace(unsigned char c) {
+LLVM_READONLY inline bool isHorizontalWhitespace(unsigned char c) {
   using namespace charinfo;
   return (InfoTable[c] & (CHAR_HORZ_WS|CHAR_SPACE)) != 0;
 }
@@ -76,7 +76,7 @@ LLVM_READONLY static inline bool isHorizontalWhitespace(unsigned char c) {
 /// Returns true if this character is vertical ASCII whitespace: '\\n', '\\r'.
 ///
 /// Note that this returns false for '\\0'.
-LLVM_READONLY static inline bool isVerticalWhitespace(unsigned char c) {
+LLVM_READONLY inline bool isVerticalWhitespace(unsigned char c) {
   using namespace charinfo;
   return (InfoTable[c] & CHAR_VERT_WS) != 0;
 }
@@ -85,43 +85,43 @@ LLVM_READONLY static inline bool isVerticalWhitespace(unsigned char c) {
 /// ' ', '\\t', '\\f', '\\v', '\\n', '\\r'.
 ///
 /// Note that this returns false for '\\0'.
-LLVM_READONLY static inline bool isWhitespace(unsigned char c) {
+LLVM_READONLY inline bool isWhitespace(unsigned char c) {
   using namespace charinfo;
   return (InfoTable[c] & (CHAR_HORZ_WS|CHAR_VERT_WS|CHAR_SPACE)) != 0;
 }
 
 /// Return true if this character is an ASCII digit: [0-9]
-LLVM_READONLY static inline bool isDigit(unsigned char c) {
+LLVM_READONLY inline bool isDigit(unsigned char c) {
   using namespace charinfo;
   return (InfoTable[c] & CHAR_DIGIT) != 0;
 }
 
 /// Return true if this character is a lowercase ASCII letter: [a-z]
-LLVM_READONLY static inline bool isLowercase(unsigned char c) {
+LLVM_READONLY inline bool isLowercase(unsigned char c) {
   using namespace charinfo;
   return (InfoTable[c] & CHAR_LOWER) != 0;
 }
 
 /// Return true if this character is an uppercase ASCII letter: [A-Z]
-LLVM_READONLY static inline bool isUppercase(unsigned char c) {
+LLVM_READONLY inline bool isUppercase(unsigned char c) {
   using namespace charinfo;
   return (InfoTable[c] & CHAR_UPPER) != 0;
 }
 
 /// Return true if this character is an ASCII letter: [a-zA-Z]
-LLVM_READONLY static inline bool isLetter(unsigned char c) {
+LLVM_READONLY inline bool isLetter(unsigned char c) {
   using namespace charinfo;
   return (InfoTable[c] & (CHAR_UPPER|CHAR_LOWER)) != 0;
 }
 
 /// Return true if this character is an ASCII letter or digit: [a-zA-Z0-9]
-LLVM_READONLY static inline bool isAlphanumeric(unsigned char c) {
+LLVM_READONLY inline bool isAlphanumeric(unsigned char c) {
   using namespace charinfo;
   return (InfoTable[c] & (CHAR_DIGIT|CHAR_UPPER|CHAR_LOWER)) != 0;
 }
 
 /// Return true if this character is an ASCII hex digit: [0-9a-fA-F]
-LLVM_READONLY static inline bool isHexDigit(unsigned char c) {
+LLVM_READONLY inline bool isHexDigit(unsigned char c) {
   using namespace charinfo;
   return (InfoTable[c] & (CHAR_DIGIT|CHAR_XLETTER)) != 0;
 }
@@ -129,7 +129,7 @@ LLVM_READONLY static inline bool isHexDigit(unsigned char c) {
 /// Return true if this character is an ASCII punctuation character.
 ///
 /// Note that '_' is both a punctuation character and an identifier character!
-LLVM_READONLY static inline bool isPunctuation(unsigned char c) {
+LLVM_READONLY inline bool isPunctuation(unsigned char c) {
   using namespace charinfo;
   return (InfoTable[c] & (CHAR_UNDER|CHAR_PERIOD|CHAR_RAWDEL|CHAR_PUNCT)) != 0;
 }
@@ -137,7 +137,7 @@ LLVM_READONLY static inline bool isPunctuation(unsigned char c) {
 /// Return true if this character is an ASCII printable character; that is, a
 /// character that should take exactly one column to print in a fixed-width
 /// terminal.
-LLVM_READONLY static inline bool isPrintable(unsigned char c) {
+LLVM_READONLY inline bool isPrintable(unsigned char c) {
   using namespace charinfo;
   return (InfoTable[c] & (CHAR_UPPER|CHAR_LOWER|CHAR_PERIOD|CHAR_PUNCT|
                           CHAR_DIGIT|CHAR_UNDER|CHAR_RAWDEL|CHAR_SPACE)) != 0;
@@ -145,14 +145,14 @@ LLVM_READONLY static inline bool isPrintable(unsigned char c) {
 
 /// Return true if this is the body character of a C preprocessing number,
 /// which is [a-zA-Z0-9_.].
-LLVM_READONLY static inline bool isPreprocessingNumberBody(unsigned char c) {
+LLVM_READONLY inline bool isPreprocessingNumberBody(unsigned char c) {
   using namespace charinfo;
   return (InfoTable[c] &
           (CHAR_UPPER|CHAR_LOWER|CHAR_DIGIT|CHAR_UNDER|CHAR_PERIOD)) != 0;
 }
 
 /// Return true if this is the body character of a C++ raw string delimiter.
-LLVM_READONLY static inline bool isRawStringDelimBody(unsigned char c) {
+LLVM_READONLY inline bool isRawStringDelimBody(unsigned char c) {
   using namespace charinfo;
   return (InfoTable[c] & (CHAR_UPPER|CHAR_LOWER|CHAR_PERIOD|
                           CHAR_DIGIT|CHAR_UNDER|CHAR_RAWDEL)) != 0;
@@ -162,7 +162,7 @@ LLVM_READONLY static inline bool isRawStringDelimBody(unsigned char c) {
 /// Converts the given ASCII character to its lowercase equivalent.
 ///
 /// If the character is not an uppercase character, it is returned as is.
-LLVM_READONLY static inline char toLowercase(char c) {
+LLVM_READONLY inline char toLowercase(char c) {
   if (isUppercase(c))
     return c + 'a' - 'A';
   return c;
@@ -171,7 +171,7 @@ LLVM_READONLY static inline char toLowercase(char c) {
 /// Converts the given ASCII character to its uppercase equivalent.
 ///
 /// If the character is not a lowercase character, it is returned as is.
-LLVM_READONLY static inline char toUppercase(char c) {
+LLVM_READONLY inline char toUppercase(char c) {
   if (isLowercase(c))
     return c + 'A' - 'a';
   return c;
@@ -182,7 +182,7 @@ LLVM_READONLY static inline char toUppercase(char c) {
 ///
 /// Note that this is a very simple check; it does not accept '$' or UCNs as
 /// valid identifier characters.
-LLVM_READONLY static inline bool isValidIdentifier(StringRef S) {
+LLVM_READONLY inline bool isValidIdentifier(StringRef S) {
   if (S.empty() || !isIdentifierHead(S[0]))
     return false;
 
diff --git a/include/clang/Basic/Cuda.h b/include/clang/Basic/Cuda.h
index ad1139b8c197e..1a0731c37a35f 100644
--- a/include/clang/Basic/Cuda.h
+++ b/include/clang/Basic/Cuda.h
@@ -21,6 +21,8 @@ enum class CudaVersion {
   CUDA_70,
   CUDA_75,
   CUDA_80,
+  CUDA_90,
+  LATEST = CUDA_90,
 };
 const char *CudaVersionToString(CudaVersion V);
 
@@ -41,6 +43,7 @@ enum class CudaArch {
   SM_60,
   SM_61,
   SM_62,
+  SM_70,
 };
 const char *CudaArchToString(CudaArch A);
 
@@ -60,6 +63,7 @@ enum class CudaVirtualArch {
   COMPUTE_60,
   COMPUTE_61,
   COMPUTE_62,
+  COMPUTE_70,
 };
 const char *CudaVirtualArchToString(CudaVirtualArch A);
 
@@ -72,6 +76,9 @@ CudaVirtualArch VirtualArchForCudaArch(CudaArch A);
 /// Get the earliest CudaVersion that supports the given CudaArch.
 CudaVersion MinVersionForCudaArch(CudaArch A);
 
+/// Get the latest CudaVersion that supports the given CudaArch.
+CudaVersion MaxVersionForCudaArch(CudaArch A);
+
 } // namespace clang
 
 #endif
diff --git a/include/clang/Basic/DeclNodes.td b/include/clang/Basic/DeclNodes.td
index 3298a80e51341..67ca9e5c6c62c 100644
--- a/include/clang/Basic/DeclNodes.td
+++ b/include/clang/Basic/DeclNodes.td
@@ -1,66 +1,68 @@
 class AttrSubject;
 
-class Decl<bit abstract = 0> : AttrSubject {
+class Decl<string diagSpelling = "", bit abstract = 0> : AttrSubject {
   bit Abstract = abstract;
+  string DiagSpelling = diagSpelling;
 }
 
-class DDecl<Decl base, bit abstract = 0> : Decl<abstract> {
+class DDecl<Decl base, string diagSpelling = "", bit abstract = 0>
+    : Decl<diagSpelling, abstract> {
   Decl Base = base;
 }
 
-class DeclContext { }
+class DeclContext {}
 
 def TranslationUnit : Decl, DeclContext;
 def PragmaComment : Decl;
 def PragmaDetectMismatch : Decl;
 def ExternCContext : Decl, DeclContext;
-def Named : Decl<1>;
-  def Namespace : DDecl<Named>, DeclContext;
+def Named : Decl<"named declarations", 1>;
+  def Namespace : DDecl<Named, "namespaces">, DeclContext;
   def UsingDirective : DDecl<Named>;
   def NamespaceAlias : DDecl<Named>;
-  def Label : DDecl<Named>;
-  def Type : DDecl<Named, 1>;
-    def TypedefName : DDecl<Type, 1>;
+  def Label : DDecl<Named, "labels">;
+  def Type : DDecl<Named, "types", 1>;
+    def TypedefName : DDecl<Type, "typedefs", 1>;
       def Typedef : DDecl<TypedefName>;
       def TypeAlias : DDecl<TypedefName>;
       def ObjCTypeParam : DDecl<TypedefName>;
     def UnresolvedUsingTypename : DDecl<Type>;
-    def Tag : DDecl<Type, 1>, DeclContext;
-      def Enum : DDecl<Tag>;
-      def Record : DDecl<Tag>;
-        def CXXRecord : DDecl<Record>;
+    def Tag : DDecl<Type, "tag types", 1>, DeclContext;
+      def Enum : DDecl<Tag, "enums">;
+      def Record : DDecl<Tag, "structs, unions, classes">;
+        def CXXRecord : DDecl<Record, "classes">;
           def ClassTemplateSpecialization : DDecl<CXXRecord>;
             def ClassTemplatePartialSpecialization
               : DDecl<ClassTemplateSpecialization>;
     def TemplateTypeParm : DDecl<Type>;
-  def Value : DDecl<Named, 1>;
-    def EnumConstant : DDecl<Value>;
+  def Value : DDecl<Named, "value declarations", 1>;
+    def EnumConstant : DDecl<Value, "enumerators">;
     def UnresolvedUsingValue : DDecl<Value>;
     def IndirectField : DDecl<Value>;
     def Binding : DDecl<Value>;
     def OMPDeclareReduction : DDecl<Value>, DeclContext;
-    def Declarator : DDecl<Value, 1>;
-      def Field : DDecl<Declarator>;
+    def Declarator : DDecl<Value, "declarators", 1>;
+      def Field : DDecl<Declarator, "non-static data members">;
         def ObjCIvar : DDecl<Field>;
         def ObjCAtDefsField : DDecl<Field>;
       def MSProperty : DDecl<Declarator>;
-      def Function : DDecl<Declarator>, DeclContext;
+      def Function : DDecl<Declarator, "functions">, DeclContext;
         def CXXDeductionGuide : DDecl<Function>;
         def CXXMethod : DDecl<Function>;
           def CXXConstructor : DDecl<CXXMethod>;
           def CXXDestructor : DDecl<CXXMethod>;
           def CXXConversion : DDecl<CXXMethod>;
-      def Var : DDecl<Declarator>;
+      def Var : DDecl<Declarator, "variables">;
         def VarTemplateSpecialization : DDecl<Var>;
           def VarTemplatePartialSpecialization
             : DDecl<VarTemplateSpecialization>;
         def ImplicitParam : DDecl<Var>;
-        def ParmVar : DDecl<Var>;
+        def ParmVar : DDecl<Var, "parameters">;
         def Decomposition : DDecl<Var>;
         def OMPCapturedExpr : DDecl<Var>;
       def NonTypeTemplateParm : DDecl<Declarator>;
-  def Template : DDecl<Named, 1>;
-    def RedeclarableTemplate : DDecl<Template, 1>;
+  def Template : DDecl<Named, "templates", 1>;
+    def RedeclarableTemplate : DDecl<Template, "redeclarable templates", 1>;
       def FunctionTemplate : DDecl<RedeclarableTemplate>;
       def ClassTemplate : DDecl<RedeclarableTemplate>;
       def VarTemplate : DDecl<RedeclarableTemplate>;
@@ -71,15 +73,16 @@ def Named : Decl<1>;
   def UsingPack : DDecl<Named>;
   def UsingShadow : DDecl<Named>;
     def ConstructorUsingShadow : DDecl<UsingShadow>;
-  def ObjCMethod : DDecl<Named>, DeclContext;
-  def ObjCContainer : DDecl<Named, 1>, DeclContext;
+  def ObjCMethod : DDecl<Named, "Objective-C methods">, DeclContext;
+  def ObjCContainer : DDecl<Named, "Objective-C containers", 1>, DeclContext;
     def ObjCCategory : DDecl<ObjCContainer>;
-    def ObjCProtocol : DDecl<ObjCContainer>;
-    def ObjCInterface : DDecl<ObjCContainer>;
-    def ObjCImpl : DDecl<ObjCContainer, 1>;
+    def ObjCProtocol : DDecl<ObjCContainer, "Objective-C protocols">;
+    def ObjCInterface : DDecl<ObjCContainer, "Objective-C interfaces">;
+    def ObjCImpl
+        : DDecl<ObjCContainer, "Objective-C implementation declarations", 1>;
       def ObjCCategoryImpl : DDecl<ObjCImpl>;
       def ObjCImplementation : DDecl<ObjCImpl>;
-  def ObjCProperty : DDecl<Named>;
+  def ObjCProperty : DDecl<Named, "Objective-C properties">;
   def ObjCCompatibleAlias : DDecl<Named>;
 def LinkageSpec : Decl, DeclContext;
 def Export : Decl, DeclContext;
@@ -89,7 +92,7 @@ def AccessSpec : Decl;
 def Friend : Decl;
 def FriendTemplate : Decl;
 def StaticAssert : Decl;
-def Block : Decl, DeclContext;
+def Block : Decl<"blocks">, DeclContext;
 def Captured : Decl, DeclContext;
 def ClassScopeFunctionSpecialization : Decl;
 def Import : Decl;
diff --git a/include/clang/Basic/Diagnostic.h b/include/clang/Basic/Diagnostic.h
index 22cded21c12df..a7458d45618ee 100644
--- a/include/clang/Basic/Diagnostic.h
+++ b/include/clang/Basic/Diagnostic.h
@@ -575,13 +575,15 @@ public:
   OverloadsShown getShowOverloads() const { return ShowOverloads; }
   
   /// \brief Pretend that the last diagnostic issued was ignored, so any
-  /// subsequent notes will be suppressed.
+  /// subsequent notes will be suppressed, or restore a prior ignoring
+  /// state after ignoring some diagnostics and their notes, possibly in
+  /// the middle of another diagnostic.
   ///
   /// This can be used by clients who suppress diagnostics themselves.
-  void setLastDiagnosticIgnored() {
+  void setLastDiagnosticIgnored(bool Ignored = true) {
     if (LastDiagLevel == DiagnosticIDs::Fatal)
       FatalErrorOccurred = true;
-    LastDiagLevel = DiagnosticIDs::Ignored;
+    LastDiagLevel = Ignored ? DiagnosticIDs::Ignored : DiagnosticIDs::Warning;
   }
 
   /// \brief Determine whether the previous diagnostic was ignored. This can
diff --git a/include/clang/Basic/Diagnostic.td b/include/clang/Basic/Diagnostic.td
index f25068eca1322..52ccf350e651e 100644
--- a/include/clang/Basic/Diagnostic.td
+++ b/include/clang/Basic/Diagnostic.td
@@ -133,10 +133,12 @@ include "DiagnosticASTKinds.td"
 include "DiagnosticAnalysisKinds.td"
 include "DiagnosticCommentKinds.td"
 include "DiagnosticCommonKinds.td"
+include "DiagnosticCrossTUKinds.td"
 include "DiagnosticDriverKinds.td"
 include "DiagnosticFrontendKinds.td"
 include "DiagnosticLexKinds.td"
 include "DiagnosticParseKinds.td"
+include "DiagnosticRefactoringKinds.td"
 include "DiagnosticSemaKinds.td"
 include "DiagnosticSerializationKinds.td"
 
diff --git a/include/clang/Basic/DiagnosticASTKinds.td b/include/clang/Basic/DiagnosticASTKinds.td
index b3cba2066edd8..215580b2e9b66 100644
--- a/include/clang/Basic/DiagnosticASTKinds.td
+++ b/include/clang/Basic/DiagnosticASTKinds.td
@@ -127,6 +127,10 @@ def note_constexpr_access_null : Note<
 def note_constexpr_access_past_end : Note<
   "%select{read of|assignment to|increment of|decrement of}0 "
   "dereferenced one-past-the-end pointer is not allowed in a constant expression">;
+def note_constexpr_access_unsized_array : Note<
+  "%select{read of|assignment to|increment of|decrement of}0 "
+  "pointer to element of array without known bound "
+  "is not allowed in a constant expression">;
 def note_constexpr_access_inactive_union_member : Note<
   "%select{read of|assignment to|increment of|decrement of}0 "
   "member %1 of union with %select{active member %3|no active member}2 "
@@ -154,6 +158,11 @@ def note_constexpr_baa_insufficient_alignment : Note<
 def note_constexpr_baa_value_insufficient_alignment : Note<
   "value of the aligned pointer (%0) is not a multiple of the asserted %1 "
   "%plural{1:byte|:bytes}1">;
+def note_constexpr_unsupported_unsized_array : Note<
+  "array-to-pointer decay of array member without known bound is not supported">;
+def note_constexpr_unsized_array_indexed : Note<
+  "indexing of array without known bound is not allowed "
+  "in a constant expression">;
 
 def warn_integer_constant_overflow : Warning<
   "overflow in expression; result is %0 with type %1">,
diff --git a/include/clang/Basic/DiagnosticCommonKinds.td b/include/clang/Basic/DiagnosticCommonKinds.td
index 98fd3c4d57ac0..82ca27b7345e3 100644
--- a/include/clang/Basic/DiagnosticCommonKinds.td
+++ b/include/clang/Basic/DiagnosticCommonKinds.td
@@ -185,6 +185,8 @@ def note_invalid_subexpr_in_const_expr : Note<
 def err_target_unknown_triple : Error<
   "unknown target triple '%0', please use -triple or -arch">;
 def err_target_unknown_cpu : Error<"unknown target CPU '%0'">;
+def err_target_unsupported_cpu_for_micromips : Error<
+  "micromips is not supported for target CPU '%0'">;
 def err_target_unknown_abi : Error<"unknown target ABI '%0'">;
 def err_target_unsupported_abi : Error<"ABI '%0' is not supported on CPU '%1'">;
 def err_target_unsupported_abi_for_triple : Error<
diff --git a/include/clang/Basic/DiagnosticCrossTUKinds.td b/include/clang/Basic/DiagnosticCrossTUKinds.td
new file mode 100644
index 0000000000000..8b6d8b681445d
--- /dev/null
+++ b/include/clang/Basic/DiagnosticCrossTUKinds.td
@@ -0,0 +1,18 @@
+//==--- DiagnosticCrossTUKinds.td - Cross Translation Unit diagnostics ----===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+let Component = "CrossTU" in {
+
+def err_fnmap_parsing : Error<
+  "error parsing index file: '%0' line: %1 'UniqueID filename' format "
+  "expected">;
+
+def err_multiple_def_index : Error<
+  "multiple definitions are found for the same key in index ">;
+}
diff --git a/include/clang/Basic/DiagnosticDriverKinds.td b/include/clang/Basic/DiagnosticDriverKinds.td
index fcef881fa0aef..41b5e42b44322 100644
--- a/include/clang/Basic/DiagnosticDriverKinds.td
+++ b/include/clang/Basic/DiagnosticDriverKinds.td
@@ -29,9 +29,10 @@ def err_drv_no_cuda_installation : Error<
 def err_drv_no_cuda_libdevice : Error<
   "cannot find libdevice for %0. Provide path to different CUDA installation "
   "via --cuda-path, or pass -nocudalib to build without linking with libdevice.">;
-def err_drv_cuda_version_too_low : Error<
-  "GPU arch %1 requires CUDA version at least %3, but installation at %0 is %2. "
-  "Use --cuda-path to specify a different CUDA install, or pass "
+def err_drv_cuda_version_unsupported : Error<
+  "GPU arch %0 is supported by CUDA versions between %1 and %2 (inclusive), "
+  "but installation at %3 is %4.  Use --cuda-path to specify a different CUDA "
+  "install, pass a different GPU arch with --cuda-gpu-arch, or pass "
   "--no-cuda-version-check.">;
 def err_drv_cuda_nvptx_host : Error<"unsupported use of NVPTX for host compilation.">;
 def err_drv_invalid_thread_model_for_target : Error<
@@ -69,6 +70,10 @@ def err_drv_invalid_Xarch_argument_with_args : Error<
   "invalid Xarch argument: '%0', options requiring arguments are unsupported">;
 def err_drv_invalid_Xarch_argument_isdriver : Error<
   "invalid Xarch argument: '%0', cannot change driver behavior inside Xarch argument">;
+def err_drv_Xopenmp_target_missing_triple : Error<
+  "cannot deduce implicit triple value for -Xopenmp-target, specify triple using -Xopenmp-target=<triple>">;
+def err_drv_invalid_Xopenmp_target_with_args : Error<
+  "invalid -Xopenmp-target argument: '%0', options requiring arguments are unsupported">;
 def err_drv_argument_only_allowed_with : Error<
   "invalid argument '%0' only allowed with '%1'">;
 def err_drv_argument_not_allowed_with : Error<
@@ -97,6 +102,10 @@ def err_drv_force_crash : Error<
   "failing because %select{environment variable 'FORCE_CLANG_DIAGNOSTICS_CRASH' is set|'-gen-reproducer' is used}0">;
 def err_drv_invalid_mfloat_abi : Error<
   "invalid float ABI '%0'">;
+def err_drv_invalid_mtp : Error<
+  "invalid thread pointer reading mode '%0'">;
+def err_drv_missing_arg_mtp : Error<
+  "missing argument to '%0'">;
 def err_drv_invalid_libcxx_deployment : Error<
   "invalid deployment target for -stdlib=libc++ (requires %0 or later)">;
 def err_drv_invalid_argument_to_fdebug_prefix_map : Error<
@@ -106,6 +115,10 @@ def err_drv_malformed_sanitizer_blacklist : Error<
 
 def err_target_unsupported_arch
   : Error<"the target architecture '%0' is not supported by the target '%1'">;
+def err_cpu_unsupported_isa
+  : Error<"CPU '%0' does not support '%1' execution mode">;
+def err_arch_unsupported_isa
+  : Error<"Architecture '%0' does not support '%1' execution mode">;
 
 def err_drv_I_dash_not_supported : Error<
   "'%0' not supported, please use -iquote instead">;
@@ -231,7 +244,7 @@ def warn_drv_enabling_rtti_with_exceptions : Warning<
   InGroup<DiagGroup<"rtti-for-exceptions">>;
 def warn_drv_disabling_vptr_no_rtti_default : Warning<
   "implicitly disabling vptr sanitizer because rtti wasn't enabled">,
-  InGroup<DiagGroup<"auto-disable-vptr-sanitizer">>;
+  InGroup<AutoDisableVptrSanitizer>;
 def warn_drv_object_size_disabled_O0 : Warning<
   "the object size sanitizer has no effect at -O0, but is explicitly enabled: %0">,
   InGroup<InvalidCommandLineArgument>;
@@ -251,6 +264,9 @@ def err_analyzer_config_no_value : Error<
 def err_analyzer_config_multiple_values : Error<
   "analyzer-config option '%0' should contain only one '='">;
 
+def err_drv_invalid_hvx_length : Error<
+  "-mhvx-length is not supported without a -mhvx/-mhvx= flag">;
+
 def err_drv_modules_validate_once_requires_timestamp : Error<
   "option '-fmodules-validate-once-per-build-session' requires "
   "'-fbuild-session-timestamp=<seconds since Epoch>' or '-fbuild-session-file=<file>'">;
@@ -277,9 +293,27 @@ def warn_target_unsupported_nan2008 : Warning<
 def warn_target_unsupported_nanlegacy : Warning<
   "ignoring '-mnan=legacy' option because the '%0' architecture does not support it">,
   InGroup<UnsupportedNan>;
+def warn_target_unsupported_abslegacy : Warning<
+  "ignoring '-mabs=legacy' option because the '%0' architecture does not support it">,
+  InGroup<UnsupportedAbs>;
+def warn_target_unsupported_abs2008 : Warning<
+  "ignoring '-mabs=2008' option because the '%0' architecture does not support it">,
+  InGroup<UnsupportedAbs>;
 def warn_target_unsupported_compact_branches : Warning<
   "ignoring '-mcompact-branches=' option because the '%0' architecture does not"
   " support it">, InGroup<UnsupportedCB>;
+def warn_drv_unsupported_gpopt : Warning<
+  "ignoring '-mgpopt' option as it cannot be used with %select{|the implicit"
+  " usage of }0-mabicalls">,
+  InGroup<UnsupportedGPOpt>;
+def warn_drv_unsupported_longcalls : Warning<
+  "ignoring '-mlong-calls' option as it is not currently supported with "
+  "%select{|the implicit usage of }0-mabicalls">,
+  InGroup<OptionIgnored>;
+def warn_drv_unsupported_abicalls : Warning<
+  "ignoring '-mabicalls' option as it cannot be used with "
+  "non position-independent code and the N64 ABI">,
+  InGroup<OptionIgnored>;
 
 def warn_drv_unable_to_find_directory_expected : Warning<
   "unable to find %0 directory, expected to be in '%1'">,
@@ -300,4 +334,12 @@ def warn_drv_msvc_not_found : Warning<
   "unable to find a Visual Studio installation; "
   "try running Clang from a developer command prompt">,
   InGroup<DiagGroup<"msvc-not-found">>;
+
+def warn_drv_fine_grained_bitfield_accesses_ignored : Warning<
+  "option '-ffine-grained-bitfield-accesses' cannot be enabled together with a sanitizer; flag ignored">,
+  InGroup<OptionIgnored>;
+
+def note_drv_verify_prefix_spelling : Note<
+  "-verify prefixes must start with a letter and contain only alphanumeric"
+  " characters, hyphens, and underscores">;
 }
diff --git a/include/clang/Basic/DiagnosticError.h b/include/clang/Basic/DiagnosticError.h
new file mode 100644
index 0000000000000..6b4b073736a8d
--- /dev/null
+++ b/include/clang/Basic/DiagnosticError.h
@@ -0,0 +1,61 @@
+//===--- DiagnosticError.h - Diagnostic payload for llvm::Error -*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_BASIC_DIAGNOSTIC_ERROR_H
+#define LLVM_CLANG_BASIC_DIAGNOSTIC_ERROR_H
+
+#include "clang/Basic/PartialDiagnostic.h"
+#include "llvm/Support/Error.h"
+
+namespace clang {
+
+/// \brief Carries a Clang diagnostic in an llvm::Error.
+///
+/// Users should emit the stored diagnostic using the DiagnosticsEngine.
+class DiagnosticError : public llvm::ErrorInfo<DiagnosticError> {
+public:
+  DiagnosticError(PartialDiagnosticAt Diag) : Diag(std::move(Diag)) {}
+
+  void log(raw_ostream &OS) const override { OS << "clang diagnostic"; }
+
+  PartialDiagnosticAt &getDiagnostic() { return Diag; }
+  const PartialDiagnosticAt &getDiagnostic() const { return Diag; }
+
+  /// Creates a new \c DiagnosticError that contains the given diagnostic at
+  /// the given location.
+  static llvm::Error create(SourceLocation Loc, PartialDiagnostic Diag) {
+    return llvm::make_error<DiagnosticError>(
+        PartialDiagnosticAt(Loc, std::move(Diag)));
+  }
+
+  /// Extracts and returns the diagnostic payload from the given \c Error if
+  /// the error is a \c DiagnosticError. Returns none if the given error is not
+  /// a \c DiagnosticError.
+  static Optional<PartialDiagnosticAt> take(llvm::Error &Err) {
+    Optional<PartialDiagnosticAt> Result;
+    Err = llvm::handleErrors(std::move(Err), [&](DiagnosticError &E) {
+      Result = std::move(E.getDiagnostic());
+    });
+    return Result;
+  }
+
+  static char ID;
+
+private:
+  // Users are not expected to use error_code.
+  std::error_code convertToErrorCode() const override {
+    return llvm::inconvertibleErrorCode();
+  }
+
+  PartialDiagnosticAt Diag;
+};
+
+} // end namespace clang
+
+#endif // LLVM_CLANG_BASIC_DIAGNOSTIC_ERROR_H
diff --git a/include/clang/Basic/DiagnosticFrontendKinds.td b/include/clang/Basic/DiagnosticFrontendKinds.td
index 57c24e9be73a7..392a340a3bb72 100644
--- a/include/clang/Basic/DiagnosticFrontendKinds.td
+++ b/include/clang/Basic/DiagnosticFrontendKinds.td
@@ -116,6 +116,8 @@ def err_fe_action_not_available : Error<
     "action %0 not compiled in">;
 def err_fe_invalid_alignment : Error<
     "invalid value '%1' in '%0'; alignment must be a power of 2">;
+def err_fe_invalid_wchar_type
+    : Error<"invalid wchar_t type '%0'; must be one of 'char', 'short', 'int'">;
 
 def warn_fe_serialized_diag_merge_failure : Warning<
     "unable to merge a subprocess's serialized diagnostics">,
diff --git a/include/clang/Basic/DiagnosticGroups.td b/include/clang/Basic/DiagnosticGroups.td
index 23e4d4633ae2c..c23183c81ac8b 100644
--- a/include/clang/Basic/DiagnosticGroups.td
+++ b/include/clang/Basic/DiagnosticGroups.td
@@ -27,11 +27,16 @@ def GNUAnonymousStruct : DiagGroup<"gnu-anonymous-struct">;
 def GNUAutoType : DiagGroup<"gnu-auto-type">;
 def ArrayBounds : DiagGroup<"array-bounds">;
 def ArrayBoundsPointerArithmetic : DiagGroup<"array-bounds-pointer-arithmetic">;
+def AutoDisableVptrSanitizer : DiagGroup<"auto-disable-vptr-sanitizer">;
 def Availability : DiagGroup<"availability">;
 def Section : DiagGroup<"section">;
 def AutoImport : DiagGroup<"auto-import">;
 def CXX14BinaryLiteral : DiagGroup<"c++14-binary-literal">;
+def CXXPre14CompatBinaryLiteral : DiagGroup<"c++98-c++11-compat-binary-literal">;
 def GNUBinaryLiteral : DiagGroup<"gnu-binary-literal">;
+def BinaryLiteral : DiagGroup<"binary-literal", [CXX14BinaryLiteral,
+                                                 CXXPre14CompatBinaryLiteral,
+                                                 GNUBinaryLiteral]>;
 def GNUCompoundLiteralInitializer : DiagGroup<"gnu-compound-literal-initializer">;
 def BitFieldConstantConversion : DiagGroup<"bitfield-constant-conversion">;
 def BitFieldEnumConversion : DiagGroup<"bitfield-enum-conversion">;
@@ -60,7 +65,9 @@ def FloatConversion :
 def DoublePromotion : DiagGroup<"double-promotion">;
 def EnumTooLarge : DiagGroup<"enum-too-large">;
 def UnsupportedNan : DiagGroup<"unsupported-nan">;
+def UnsupportedAbs : DiagGroup<"unsupported-abs">;
 def UnsupportedCB : DiagGroup<"unsupported-cb">;
+def UnsupportedGPOpt : DiagGroup<"unsupported-gpopt">;
 def NonLiteralNullConversion : DiagGroup<"non-literal-null-conversion">;
 def NullConversion : DiagGroup<"null-conversion">;
 def ImplicitConversionFloatingPointToBool :
@@ -87,6 +94,7 @@ def GNUStringLiteralOperatorTemplate :
   DiagGroup<"gnu-string-literal-operator-template">;
 def UndefinedVarTemplate : DiagGroup<"undefined-var-template">;
 def UndefinedFuncTemplate : DiagGroup<"undefined-func-template">;
+def MissingNoEscape : DiagGroup<"missing-noescape">;
 
 def DeleteIncomplete : DiagGroup<"delete-incomplete">;
 def DeleteNonVirtualDtor : DiagGroup<"delete-non-virtual-dtor">;
@@ -162,10 +170,14 @@ def NoexceptType : DiagGroup<"noexcept-type", [CXX17CompatMangling]>;
 // Warnings for C++1y code which is not compatible with prior C++ standards.
 def CXXPre14Compat : DiagGroup<"c++98-c++11-compat">;
 def CXXPre14CompatPedantic : DiagGroup<"c++98-c++11-compat-pedantic",
-                                       [CXXPre14Compat]>;
-def CXXPre1zCompat : DiagGroup<"c++98-c++11-c++14-compat">;
-def CXXPre1zCompatPedantic : DiagGroup<"c++98-c++11-c++14-compat-pedantic",
-                                       [CXXPre1zCompat]>;
+                                       [CXXPre14Compat,
+                                        CXXPre14CompatBinaryLiteral]>;
+def CXXPre17Compat : DiagGroup<"c++98-c++11-c++14-compat">;
+def CXXPre17CompatPedantic : DiagGroup<"c++98-c++11-c++14-compat-pedantic",
+                                       [CXXPre17Compat]>;
+def CXXPre2aCompat : DiagGroup<"c++98-c++11-c++14-c++17-compat">;
+def CXXPre2aCompatPedantic : DiagGroup<"c++98-c++11-c++14-c++17-compat-pedantic",
+                                       [CXXPre2aCompat]>;
 
 def CXX98CompatBindToTemporaryCopy :
   DiagGroup<"c++98-compat-bind-to-temporary-copy">;
@@ -178,13 +190,15 @@ def CXX98Compat : DiagGroup<"c++98-compat",
                             [CXX98CompatLocalTypeTemplateArgs,
                              CXX98CompatUnnamedTypeTemplateArgs,
                              CXXPre14Compat,
-                             CXXPre1zCompat]>;
+                             CXXPre17Compat,
+                             CXXPre2aCompat]>;
 // Warnings for C++11 features which are Extensions in C++98 mode.
 def CXX98CompatPedantic : DiagGroup<"c++98-compat-pedantic",
                                     [CXX98Compat,
                                      CXX98CompatBindToTemporaryCopy,
                                      CXXPre14CompatPedantic,
-                                     CXXPre1zCompatPedantic]>;
+                                     CXXPre17CompatPedantic,
+                                     CXXPre2aCompatPedantic]>;
 
 def CXX11Narrowing : DiagGroup<"c++11-narrowing">;
 
@@ -209,21 +223,35 @@ def CXX11Compat : DiagGroup<"c++11-compat",
                              CXX11CompatReservedUserDefinedLiteral,
                              CXX11CompatDeprecatedWritableStr,
                              CXXPre14Compat,
-                             CXXPre1zCompat]>;
+                             CXXPre17Compat,
+                             CXXPre2aCompat]>;
 def : DiagGroup<"c++0x-compat", [CXX11Compat]>;
 def CXX11CompatPedantic : DiagGroup<"c++11-compat-pedantic",
-                                    [CXXPre14CompatPedantic,
-                                     CXXPre1zCompatPedantic]>;
+                                    [CXX11Compat,
+                                     CXXPre14CompatPedantic,
+                                     CXXPre17CompatPedantic,
+                                     CXXPre2aCompatPedantic]>;
 
-def CXX14Compat : DiagGroup<"c++14-compat", [CXXPre1zCompat]>;
+def CXX14Compat : DiagGroup<"c++14-compat", [CXXPre17Compat,
+                                             CXXPre2aCompat]>;
 def CXX14CompatPedantic : DiagGroup<"c++14-compat-pedantic",
-                                    [CXXPre1zCompatPedantic]>;
+                                    [CXX14Compat,
+                                     CXXPre17CompatPedantic,
+                                     CXXPre2aCompatPedantic]>;
 
 def CXX17Compat : DiagGroup<"c++17-compat", [DeprecatedRegister,
                                              DeprecatedIncrementBool,
-                                             CXX17CompatMangling]>;
+                                             CXX17CompatMangling,
+                                             CXXPre2aCompat]>;
+def CXX17CompatPedantic : DiagGroup<"c++17-compat-pedantic",
+                                    [CXX17Compat,
+                                     CXXPre2aCompatPedantic]>;
 def : DiagGroup<"c++1z-compat", [CXX17Compat]>;
 
+def CXX2aCompat : DiagGroup<"c++2a-compat">;
+def CXX2aCompatPedantic : DiagGroup<"c++2a-compat-pedantic",
+                                    [CXX2aCompat]>;
+
 def ExitTimeDestructors : DiagGroup<"exit-time-destructors">;
 def FlexibleArrayExtensions : DiagGroup<"flexible-array-extensions">;
 def FourByteMultiChar : DiagGroup<"four-char-constants">;
@@ -316,6 +344,7 @@ def NonPODVarargs : DiagGroup<"non-pod-varargs">;
 def ClassVarargs : DiagGroup<"class-varargs", [NonPODVarargs]>;
 def : DiagGroup<"nonportable-cfstrings">;
 def NonVirtualDtor : DiagGroup<"non-virtual-dtor">;
+def NullPointerArithmetic : DiagGroup<"null-pointer-arithmetic">;
 def : DiagGroup<"effc++", [NonVirtualDtor]>;
 def OveralignedType : DiagGroup<"over-aligned">;
 def AlignedAllocationUnavailable : DiagGroup<"aligned-allocation-unavailable">;
@@ -345,6 +374,7 @@ def ObjCRootClass : DiagGroup<"objc-root-class">;
 def ObjCPointerIntrospectPerformSelector : DiagGroup<"deprecated-objc-pointer-introspection-performSelector">;
 def ObjCPointerIntrospect : DiagGroup<"deprecated-objc-pointer-introspection", [ObjCPointerIntrospectPerformSelector]>;
 def ObjCMultipleMethodNames : DiagGroup<"objc-multiple-method-names">;
+def ObjCFlexibleArray : DiagGroup<"objc-flexible-array">;
 def OpenCLUnsupportedRGBA: DiagGroup<"opencl-unsupported-rgba">;
 def DeprecatedObjCIsaUsage : DiagGroup<"deprecated-objc-isa-usage">;
 def ExplicitInitializeCall : DiagGroup<"explicit-initialize-call">;
@@ -405,12 +435,18 @@ def StringCompare : DiagGroup<"string-compare">;
 def StringPlusInt : DiagGroup<"string-plus-int">;
 def StringPlusChar : DiagGroup<"string-plus-char">;
 def StrncatSize : DiagGroup<"strncat-size">;
+def TautologicalUnsignedZeroCompare : DiagGroup<"tautological-unsigned-zero-compare">;
+def TautologicalUnsignedEnumZeroCompare : DiagGroup<"tautological-unsigned-enum-zero-compare">;
 def TautologicalOutOfRangeCompare : DiagGroup<"tautological-constant-out-of-range-compare">;
+def TautologicalConstantCompare : DiagGroup<"tautological-constant-compare",
+                                            [TautologicalUnsignedZeroCompare,
+                                             TautologicalUnsignedEnumZeroCompare,
+                                             TautologicalOutOfRangeCompare]>;
 def TautologicalPointerCompare : DiagGroup<"tautological-pointer-compare">;
 def TautologicalOverlapCompare : DiagGroup<"tautological-overlap-compare">;
 def TautologicalUndefinedCompare : DiagGroup<"tautological-undefined-compare">;
 def TautologicalCompare : DiagGroup<"tautological-compare",
-                                    [TautologicalOutOfRangeCompare,
+                                    [TautologicalConstantCompare,
                                      TautologicalPointerCompare,
                                      TautologicalOverlapCompare,
                                      TautologicalUndefinedCompare]>;
@@ -454,6 +490,8 @@ def CoveredSwitchDefault : DiagGroup<"covered-switch-default">;
 def SwitchBool     : DiagGroup<"switch-bool">;
 def SwitchEnum     : DiagGroup<"switch-enum">;
 def Switch         : DiagGroup<"switch">;
+def EnumCompareSwitch : DiagGroup<"enum-compare-switch">;
+def EnumCompare       : DiagGroup<"enum-compare", [EnumCompareSwitch]>;
 def ImplicitFallthroughPerFunction :
   DiagGroup<"implicit-fallthrough-per-function">;
 def ImplicitFallthrough  : DiagGroup<"implicit-fallthrough",
@@ -474,10 +512,15 @@ def IgnoredPragmaIntrinsic : DiagGroup<"ignored-pragma-intrinsic">;
 def UnknownPragmas : DiagGroup<"unknown-pragmas">;
 def IgnoredPragmas : DiagGroup<"ignored-pragmas", [IgnoredPragmaIntrinsic]>;
 def PragmaClangAttribute : DiagGroup<"pragma-clang-attribute">;
+def PragmaPackSuspiciousInclude : DiagGroup<"pragma-pack-suspicious-include">;
+def PragmaPack : DiagGroup<"pragma-pack", [PragmaPackSuspiciousInclude]>;
 def Pragmas : DiagGroup<"pragmas", [UnknownPragmas, IgnoredPragmas,
-                                    PragmaClangAttribute]>;
+                                    PragmaClangAttribute, PragmaPack]>;
 def UnknownWarningOption : DiagGroup<"unknown-warning-option">;
 def NSobjectAttribute : DiagGroup<"NSObject-attribute">;
+def NSConsumedMismatch : DiagGroup<"nsconsumed-mismatch">;
+def NSReturnsMismatch : DiagGroup<"nsreturns-mismatch">;
+
 def IndependentClassAttribute : DiagGroup<"IndependentClass-attribute">;
 def UnknownAttributes : DiagGroup<"unknown-attributes">;
 def IgnoredAttributes : DiagGroup<"ignored-attributes">;
@@ -678,7 +721,8 @@ def Extra : DiagGroup<"extra", [
     SemiBeforeMethodBody,
     MissingMethodReturnType,
     SignCompare,
-    UnusedParameter
+    UnusedParameter,
+    NullPointerArithmetic
   ]>;
 
 def Most : DiagGroup<"most", [
@@ -707,6 +751,7 @@ def Most : DiagGroup<"most", [
     VolatileRegisterVar,
     ObjCMissingSuperCalls,
     ObjCDesignatedInit,
+    ObjCFlexibleArray,
     OverloadedVirtual,
     PrivateExtern,
     SelTypeCast,
@@ -772,10 +817,14 @@ def CXX11 : DiagGroup<"c++11-extensions", [CXX11ExtraSemi, CXX11InlineNamespace,
 // earlier C++ versions.
 def CXX14 : DiagGroup<"c++14-extensions", [CXX14BinaryLiteral]>;
 
-// A warning group for warnings about using C++1z features as extensions in
+// A warning group for warnings about using C++17 features as extensions in
 // earlier C++ versions.
 def CXX17 : DiagGroup<"c++17-extensions">;
 
+// A warning group for warnings about using C++2a features as extensions in
+// earlier C++ versions.
+def CXX2a : DiagGroup<"c++2a-extensions">;
+
 def : DiagGroup<"c++0x-extensions", [CXX11]>;
 def : DiagGroup<"c++1y-extensions", [CXX14]>;
 def : DiagGroup<"c++1z-extensions", [CXX17]>;
@@ -841,6 +890,7 @@ def MicrosoftVoidPseudoDtor : DiagGroup<"microsoft-void-pseudo-dtor">;
 def MicrosoftAnonTag : DiagGroup<"microsoft-anon-tag">;
 def MicrosoftCommentPaste : DiagGroup<"microsoft-comment-paste">;
 def MicrosoftEndOfFile : DiagGroup<"microsoft-end-of-file">;
+def MicrosoftInaccessibleBase : DiagGroup<"microsoft-inaccessible-base">;
 // Aliases.
 def : DiagGroup<"msvc-include", [MicrosoftInclude]>;
                 // -Wmsvc-include = -Wmicrosoft-include
diff --git a/include/clang/Basic/DiagnosticIDs.h b/include/clang/Basic/DiagnosticIDs.h
index cdd358542a0d3..43183a120bb9a 100644
--- a/include/clang/Basic/DiagnosticIDs.h
+++ b/include/clang/Basic/DiagnosticIDs.h
@@ -26,19 +26,36 @@ namespace clang {
 
   // Import the diagnostic enums themselves.
   namespace diag {
+    // Size of each of the diagnostic categories.
+    enum {
+      DIAG_SIZE_COMMON        =  300,
+      DIAG_SIZE_DRIVER        =  200,
+      DIAG_SIZE_FRONTEND      =  100,
+      DIAG_SIZE_SERIALIZATION =  120,
+      DIAG_SIZE_LEX           =  400,
+      DIAG_SIZE_PARSE         =  500,
+      DIAG_SIZE_AST           =  150,
+      DIAG_SIZE_COMMENT       =  100,
+      DIAG_SIZE_CROSSTU       =  100,
+      DIAG_SIZE_SEMA          = 3500,
+      DIAG_SIZE_ANALYSIS      =  100,
+      DIAG_SIZE_REFACTORING   = 1000,
+    };
     // Start position for diagnostics.
     enum {
-      DIAG_START_COMMON        =                                 0,
-      DIAG_START_DRIVER        = DIAG_START_COMMON          +  300,
-      DIAG_START_FRONTEND      = DIAG_START_DRIVER          +  200,
-      DIAG_START_SERIALIZATION = DIAG_START_FRONTEND        +  100,
-      DIAG_START_LEX           = DIAG_START_SERIALIZATION   +  120,
-      DIAG_START_PARSE         = DIAG_START_LEX             +  400,
-      DIAG_START_AST           = DIAG_START_PARSE           +  500,
-      DIAG_START_COMMENT       = DIAG_START_AST             +  110,
-      DIAG_START_SEMA          = DIAG_START_COMMENT         +  100,
-      DIAG_START_ANALYSIS      = DIAG_START_SEMA            + 3500,
-      DIAG_UPPER_LIMIT         = DIAG_START_ANALYSIS        +  100
+      DIAG_START_COMMON        =                          0,
+      DIAG_START_DRIVER        = DIAG_START_COMMON        + DIAG_SIZE_COMMON,
+      DIAG_START_FRONTEND      = DIAG_START_DRIVER        + DIAG_SIZE_DRIVER,
+      DIAG_START_SERIALIZATION = DIAG_START_FRONTEND      + DIAG_SIZE_FRONTEND,
+      DIAG_START_LEX           = DIAG_START_SERIALIZATION + DIAG_SIZE_SERIALIZATION,
+      DIAG_START_PARSE         = DIAG_START_LEX           + DIAG_SIZE_LEX,
+      DIAG_START_AST           = DIAG_START_PARSE         + DIAG_SIZE_PARSE,
+      DIAG_START_COMMENT       = DIAG_START_AST           + DIAG_SIZE_AST,
+      DIAG_START_CROSSTU       = DIAG_START_COMMENT       + DIAG_SIZE_CROSSTU,
+      DIAG_START_SEMA          = DIAG_START_CROSSTU       + DIAG_SIZE_COMMENT,
+      DIAG_START_ANALYSIS      = DIAG_START_SEMA          + DIAG_SIZE_SEMA,
+      DIAG_START_REFACTORING   = DIAG_START_ANALYSIS      + DIAG_SIZE_ANALYSIS,
+      DIAG_UPPER_LIMIT         = DIAG_START_REFACTORING   + DIAG_SIZE_REFACTORING
     };
 
     class CustomDiagInfo;
@@ -279,8 +296,8 @@ public:
                              SmallVectorImpl<diag::kind> &Diags) const;
 
   /// \brief Get the set of all diagnostic IDs.
-  void getAllDiagnostics(diag::Flavor Flavor,
-                         SmallVectorImpl<diag::kind> &Diags) const;
+  static void getAllDiagnostics(diag::Flavor Flavor,
+                                SmallVectorImpl<diag::kind> &Diags);
 
   /// \brief Get the diagnostic option with the closest edit distance to the
   /// given group name.
diff --git a/include/clang/Basic/DiagnosticLexKinds.td b/include/clang/Basic/DiagnosticLexKinds.td
index 706881bfdc5d7..c664281ffcd48 100644
--- a/include/clang/Basic/DiagnosticLexKinds.td
+++ b/include/clang/Basic/DiagnosticLexKinds.td
@@ -31,6 +31,14 @@ def warn_cxx98_compat_less_colon_colon : Warning<
   "'<::' is treated as digraph '<:' (aka '[') followed by ':' in C++98">,
   InGroup<CXX98Compat>, DefaultIgnore;
 
+def warn_cxx17_compat_spaceship : Warning<
+  "'<=>' operator is incompatible with C++ standards before C++2a">,
+  InGroup<CXXPre2aCompat>, DefaultIgnore;
+def warn_cxx2a_compat_spaceship : Warning<
+  "'<=>' is a single token in C++2a; "
+  "add a space to avoid a change in behavior">,
+  InGroup<CXX2aCompat>;
+
 // Trigraphs.
 def trigraph_ignored : Warning<"trigraph ignored">, InGroup<Trigraphs>;
 def trigraph_ignored_block_comment : Warning<
@@ -71,6 +79,8 @@ def ext_token_used : Extension<"extension used">,
 
 def warn_cxx11_keyword : Warning<"'%0' is a keyword in C++11">,
   InGroup<CXX11Compat>, DefaultIgnore;
+def warn_cxx2a_keyword : Warning<"'%0' is a keyword in C++2a">,
+  InGroup<CXX2aCompat>, DefaultIgnore;
 
 def ext_unterminated_char_or_string : ExtWarn<
   "missing terminating %select{'|'\"'}0 character">, InGroup<InvalidPPToken>;
@@ -109,6 +119,9 @@ def err_non_ascii : Error<
 def ext_unicode_whitespace : ExtWarn<
   "treating Unicode character as whitespace">,
   InGroup<DiagGroup<"unicode-whitespace">>;
+def warn_utf8_symbol_homoglyph : Warning<
+  "treating Unicode character <U+%0> as identifier character rather than "
+  "as '%1' symbol">, InGroup<DiagGroup<"unicode-homoglyph">>;
 
 def err_hex_escape_no_digits : Error<
   "\\%0 used with no following hex digits">;
@@ -173,8 +186,6 @@ def warn_char_constant_too_large : Warning<
 def err_multichar_utf_character_literal : Error<
   "Unicode character literals may not contain multiple characters">;
 def err_exponent_has_no_digits : Error<"exponent has no digits">;
-def ext_imaginary_constant : Extension<
-  "imaginary constants are a GNU extension">, InGroup<GNUImaginaryConstant>;
 def err_hex_constant_requires : Error<
   "hexadecimal floating %select{constant|literal}0 requires "
   "%select{an exponent|a significand}1">;
@@ -182,17 +193,17 @@ def ext_hex_constant_invalid : Extension<
   "hexadecimal floating constants are a C99 feature">, InGroup<C99>;
 def ext_hex_literal_invalid : Extension<
   "hexadecimal floating literals are a C++17 feature">, InGroup<CXX17>;
-def warn_cxx1z_hex_literal : Warning<
+def warn_cxx17_hex_literal : Warning<
   "hexadecimal floating literals are incompatible with "
   "C++ standards before C++17">,
-  InGroup<CXXPre1zCompatPedantic>, DefaultIgnore;
+  InGroup<CXXPre17CompatPedantic>, DefaultIgnore;
 def ext_binary_literal : Extension<
   "binary integer literals are a GNU extension">, InGroup<GNUBinaryLiteral>;
 def ext_binary_literal_cxx14 : Extension<
   "binary integer literals are a C++14 extension">, InGroup<CXX14BinaryLiteral>;
 def warn_cxx11_compat_binary_literal : Warning<
   "binary integer literals are incompatible with C++ standards before C++14">,
-  InGroup<CXXPre14CompatPedantic>, DefaultIgnore;
+  InGroup<CXXPre14CompatBinaryLiteral>, DefaultIgnore;
 def err_pascal_string_too_long : Error<"Pascal string is too long">;
 def err_escape_too_large : Error<
   "%select{hex|octal}0 escape sequence out of range">;
@@ -209,7 +220,7 @@ def warn_cxx98_compat_unicode_literal : Warning<
   InGroup<CXX98Compat>, DefaultIgnore;
 def warn_cxx14_compat_u8_character_literal : Warning<
   "unicode literals are incompatible with C++ standards before C++17">,
-  InGroup<CXXPre1zCompat>, DefaultIgnore;
+  InGroup<CXXPre17Compat>, DefaultIgnore;
 def warn_cxx11_compat_user_defined_literal : Warning<
   "identifier after literal will be treated as a user-defined literal suffix "
   "in C++11">, InGroup<CXX11Compat>, DefaultIgnore;
@@ -346,6 +357,23 @@ def ext_pp_extra_tokens_at_eol : ExtWarn<
 def ext_pp_comma_expr : Extension<"comma operator in operand of #if">;
 def ext_pp_bad_vaargs_use : Extension<
   "__VA_ARGS__ can only appear in the expansion of a C99 variadic macro">;
+
+def ext_pp_bad_vaopt_use
+    : ExtWarn<
+          "__VA_OPT__ can only appear in the expansion of a variadic macro">,
+      InGroup<VariadicMacros>;
+
+def err_pp_missing_lparen_in_vaopt_use : Error<
+  "missing '(' following __VA_OPT__">;
+def err_pp_vaopt_nested_use : Error<
+  "__VA_OPT__ cannot be nested within its own replacement tokens">;
+
+def err_vaopt_paste_at_start : Error<
+  "'##' cannot appear at start of __VA_OPT__ argument">;
+
+def err_vaopt_paste_at_end
+    : Error<"'##' cannot appear at end of __VA_OPT__ argument">;
+
 def ext_pp_macro_redef : ExtWarn<"%0 macro redefined">, InGroup<MacroRedefined>;
 def ext_variadic_macro : Extension<"variadic macros are a C99 feature">,
   InGroup<VariadicMacros>;
@@ -674,6 +702,13 @@ def err_mmap_invalid_header_attribute_value : Error<
   "expected integer literal as value for header attribute '%0'">;
 def err_mmap_expected_header_attribute : Error<
   "expected a header attribute name ('size' or 'mtime')">;
+def err_mmap_conflicting_export_as : Error<
+  "conflicting re-export of module '%0' as '%1' or '%2'">;
+def warn_mmap_redundant_export_as : Warning<
+  "module '%0' already re-exported as '%1'">,
+  InGroup<PrivateModule>;
+def err_mmap_submodule_export_as : Error<
+  "only top-level modules can be re-exported as public">;
 
 def warn_auto_module_import : Warning<
   "treating #%select{include|import|include_next|__include_macros}0 as an "
diff --git a/include/clang/Basic/DiagnosticOptions.h b/include/clang/Basic/DiagnosticOptions.h
index c195003de5c45..3844eb63f0eaf 100644
--- a/include/clang/Basic/DiagnosticOptions.h
+++ b/include/clang/Basic/DiagnosticOptions.h
@@ -100,6 +100,10 @@ public:
   /// prefixes removed.
   std::vector<std::string> Remarks;
 
+  /// The prefixes for comment directives sought by -verify ("expected" by
+  /// default).
+  std::vector<std::string> VerifyPrefixes;
+
 public:
   // Define accessors/mutators for diagnostic options of enumeration type.
 #define DIAGOPT(Name, Bits, Default)
diff --git a/include/clang/Basic/DiagnosticParseKinds.td b/include/clang/Basic/DiagnosticParseKinds.td
index 5170c07bf6668..a8d6955da3c09 100644
--- a/include/clang/Basic/DiagnosticParseKinds.td
+++ b/include/clang/Basic/DiagnosticParseKinds.td
@@ -215,7 +215,7 @@ def ext_nested_namespace_definition : ExtWarn<
   "define each namespace separately">, InGroup<CXX17>;
 def warn_cxx14_compat_nested_namespace_definition : Warning<
   "nested namespace definition is incompatible with C++ standards before C++17">,
-  InGroup<CXXPre1zCompat>, DefaultIgnore;
+  InGroup<CXXPre17Compat>, DefaultIgnore;
 def err_inline_nested_namespace_definition : Error<
   "nested namespace definition cannot be 'inline'">;
 def err_expected_semi_after_attribute_list : Error<
@@ -525,13 +525,13 @@ def ext_constexpr_if : ExtWarn<
   "constexpr if is a C++17 extension">, InGroup<CXX17>;
 def warn_cxx14_compat_constexpr_if : Warning<
   "constexpr if is incompatible with C++ standards before C++17">,
-  DefaultIgnore, InGroup<CXXPre1zCompat>;
+  DefaultIgnore, InGroup<CXXPre17Compat>;
 def ext_init_statement : ExtWarn<
   "'%select{if|switch}0' initialization statements are a C++17 extension">,
   InGroup<CXX17>;
 def warn_cxx14_compat_init_statement : Warning<
   "%select{if|switch}0 initialization statements are incompatible with "
-  "C++ standards before C++17">, DefaultIgnore, InGroup<CXXPre1zCompat>;
+  "C++ standards before C++17">, DefaultIgnore, InGroup<CXXPre17Compat>;
 
 // C++ derived classes
 def err_dup_virtual : Error<"duplicate 'virtual' in base specifier">;
@@ -558,10 +558,13 @@ def warn_cxx98_compat_noexcept_expr : Warning<
 def warn_cxx98_compat_nullptr : Warning<
   "'nullptr' is incompatible with C++98">, InGroup<CXX98Compat>, DefaultIgnore;
 
-def warn_cxx14_compat_attribute : Warning<
+def ext_ns_enum_attribute : Extension<
+  "attributes on %select{a namespace|an enumerator}0 declaration are "
+  "a C++17 extension">, InGroup<CXX17>;
+def warn_cxx14_compat_ns_enum_attribute : Warning<
   "attributes on %select{a namespace|an enumerator}0 declaration are "
   "incompatible with C++ standards before C++17">,
-  InGroup<CXXPre1zCompat>, DefaultIgnore;
+  InGroup<CXXPre17CompatPedantic>, DefaultIgnore;
 def warn_cxx98_compat_alignas : Warning<"'alignas' is incompatible with C++98">,
   InGroup<CXX98Compat>, DefaultIgnore;
 def warn_cxx98_compat_attribute : Warning<
@@ -577,7 +580,7 @@ def err_cxx11_attribute_repeated : Error<
   "attribute %0 cannot appear multiple times in an attribute specifier">;
 def warn_cxx14_compat_using_attribute_ns : Warning<
   "default scope specifier for attributes is incompatible with C++ standards "
-  "before C++17">, InGroup<CXXPre1zCompat>, DefaultIgnore;
+  "before C++17">, InGroup<CXXPre17Compat>, DefaultIgnore;
 def ext_using_attribute_ns : ExtWarn<
   "default scope specifier for attributes is a C++17 extension">,
   InGroup<CXX17>;
@@ -622,7 +625,7 @@ def ext_template_template_param_typename : ExtWarn<
 def warn_cxx14_compat_template_template_param_typename : Warning<
   "template template parameter using 'typename' is "
   "incompatible with C++ standards before C++17">,
-  InGroup<CXXPre1zCompat>, DefaultIgnore;
+  InGroup<CXXPre17Compat>, DefaultIgnore;
 def err_template_spec_syntax_non_template : Error<
   "identifier followed by '<' indicates a class template specialization but "
   "%0 %select{does not refer to a template|refers to a function template|"
@@ -699,7 +702,7 @@ def ext_fold_expression : ExtWarn<
   InGroup<CXX17>;
 def warn_cxx14_compat_fold_expression : Warning<
   "pack fold expression is incompatible with C++ standards before C++17">,
-  InGroup<CXXPre1zCompat>, DefaultIgnore;
+  InGroup<CXXPre17Compat>, DefaultIgnore;
 def err_expected_fold_operator : Error<
   "expected a foldable binary operator in fold expression">;
 def err_fold_operator_mismatch : Error<
@@ -730,8 +733,12 @@ def ext_nonstatic_member_init : ExtWarn<
 def warn_cxx98_compat_nonstatic_member_init : Warning<
   "in-class initialization of non-static data members is incompatible with C++98">,
   InGroup<CXX98Compat>, DefaultIgnore;
-def err_bitfield_member_init: Error<
-  "bit-field member cannot have an in-class initializer">;
+def ext_bitfield_member_init: ExtWarn<
+  "default member initializer for bit-field is a C++2a extension">,
+  InGroup<CXX2a>;
+def warn_cxx17_compat_bitfield_member_init: Warning<
+  "default member initializer for bit-field is incompatible with "
+  "C++ standards before C++2a">, InGroup<CXXPre2aCompat>, DefaultIgnore;
 def err_incomplete_array_member_init: Error<
   "array bound cannot be deduced from an in-class initializer">;
 
@@ -748,19 +755,19 @@ def err_alias_declaration_specialization : Error<
 def err_alias_declaration_pack_expansion : Error<
   "alias declaration cannot be a pack expansion">;
 
-// C++1z using-declaration pack expansions
+// C++17 using-declaration pack expansions
 def ext_multi_using_declaration : ExtWarn<
   "use of multiple declarators in a single using declaration is "
   "a C++17 extension">, InGroup<CXX17>;
-def warn_cxx1z_compat_multi_using_declaration : Warning<
+def warn_cxx17_compat_multi_using_declaration : Warning<
   "use of multiple declarators in a single using declaration is "
   "incompatible with C++ standards before C++17">,
-  InGroup<CXXPre1zCompat>, DefaultIgnore;
+  InGroup<CXXPre17Compat>, DefaultIgnore;
 def ext_using_declaration_pack : ExtWarn<
   "pack expansion of using declaration is a C++17 extension">, InGroup<CXX17>;
-def warn_cxx1z_compat_using_declaration_pack : Warning<
+def warn_cxx17_compat_using_declaration_pack : Warning<
   "pack expansion using declaration is incompatible with C++ standards "
-  "before C++17">, InGroup<CXXPre1zCompat>, DefaultIgnore;
+  "before C++17">, InGroup<CXXPre17Compat>, DefaultIgnore;
 
 // C++11 override control
 def ext_override_control_keyword : ExtWarn<
@@ -811,15 +818,15 @@ def err_lambda_missing_parens : Error<
   "attribute specifier|'constexpr'}0">;
 def err_lambda_decl_specifier_repeated : Error<
   "%select{'mutable'|'constexpr'}0 cannot appear multiple times in a lambda declarator">;
-// C++1z lambda expressions
+// C++17 lambda expressions
 def err_expected_star_this_capture : Error<
   "expected 'this' following '*' in lambda capture list">;
 
-// C++1z constexpr lambda expressions
+// C++17 constexpr lambda expressions
 def warn_cxx14_compat_constexpr_on_lambda : Warning<
   "constexpr on lambda expressions is incompatible with C++ standards before C++17">,
-  InGroup<CXXPre1zCompat>, DefaultIgnore;
-def ext_constexpr_on_lambda_cxx1z : ExtWarn<
+  InGroup<CXXPre17Compat>, DefaultIgnore;
+def ext_constexpr_on_lambda_cxx17 : ExtWarn<
   "'constexpr' on lambda expressions is a C++17 extension">, InGroup<CXX17>;
 
 // Availability attribute
@@ -893,8 +900,6 @@ def err_pragma_expected_clang_section_name : Error<
   "expected one of [bss|data|rodata|text] section kind in '#pragma %0'">;
 def err_pragma_clang_section_expected_equal : Error<
   "expected '=' following '#pragma clang section %select{invalid|bss|data|rodata|text}0'">;
-def err_pragma_clang_section_expected_name_or_clear : Error<
-  "expected section name or '\"\"' following '#pragma clang section %select{invalid|bss|data|rodata|text}0'">;
 def warn_pragma_expected_section_name : Warning<
   "expected a string literal for the section name in '#pragma %0' - ignored">,
   InGroup<IgnoredPragmas>;
diff --git a/include/clang/Basic/DiagnosticRefactoringKinds.td b/include/clang/Basic/DiagnosticRefactoringKinds.td
new file mode 100644
index 0000000000000..ee396b9307299
--- /dev/null
+++ b/include/clang/Basic/DiagnosticRefactoringKinds.td
@@ -0,0 +1,34 @@
+//==--- DiagnosticRefactoringKinds.td - refactoring diagnostics -----------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+//===----------------------------------------------------------------------===//
+// Refactoring Diagnostics
+//===----------------------------------------------------------------------===//
+
+let Component = "Refactoring" in {
+
+let CategoryName = "Refactoring Invocation Issue" in {
+
+def err_refactor_no_selection : Error<"refactoring action can't be initiated "
+  "without a selection">;
+def err_refactor_selection_no_symbol : Error<"there is no symbol at the given "
+  "location">;
+def err_refactor_selection_invalid_ast : Error<"the provided selection does "
+  "not overlap with the AST nodes of interest">;
+
+def err_refactor_code_outside_of_function : Error<"the selected code is not a "
+  "part of a function's / method's body">;
+def err_refactor_extract_simple_expression : Error<"the selected expression "
+  "is too simple to extract">;
+def err_refactor_extract_prohibited_expression : Error<"the selected "
+  "expression can't be extracted">;
+
+}
+
+} // end of Refactoring diagnostics
diff --git a/include/clang/Basic/DiagnosticSemaKinds.td b/include/clang/Basic/DiagnosticSemaKinds.td
index 8dc6e7b460e86..29236eab5446c 100644
--- a/include/clang/Basic/DiagnosticSemaKinds.td
+++ b/include/clang/Basic/DiagnosticSemaKinds.td
@@ -141,6 +141,10 @@ def err_vla_decl_has_extern_linkage : Error<
   "variable length array declaration cannot have 'extern' linkage">;
 def ext_vla_folded_to_constant : Extension<
   "variable length array folded to constant array as an extension">, InGroup<GNUFoldingConstant>;
+def err_vla_unsupported : Error<
+  "variable length arrays are not supported for the current target">;
+def note_vla_unsupported : Note<
+  "variable length arrays are not supported for the current target">;
 
 // C99 variably modified types
 def err_variably_modified_template_arg : Error<
@@ -194,6 +198,8 @@ def warn_duplicate_declspec : Warning<"duplicate '%0' declaration specifier">,
   InGroup<DuplicateDeclSpecifier>;
 def ext_plain_complex : ExtWarn<
   "plain '_Complex' requires a type specifier; assuming '_Complex double'">;
+def ext_imaginary_constant : Extension<
+  "imaginary constants are a GNU extension">, InGroup<GNUImaginaryConstant>;
 def ext_integer_complex : Extension<
   "complex integer types are a GNU extension">, InGroup<GNUComplexInteger>;
 
@@ -293,8 +299,20 @@ def warn_empty_parens_are_function_decl : Warning<
 def warn_parens_disambiguated_as_function_declaration : Warning<
   "parentheses were disambiguated as a function declaration">,
   InGroup<VexingParse>;
+def warn_parens_disambiguated_as_variable_declaration : Warning<
+  "parentheses were disambiguated as redundant parentheses around declaration "
+  "of variable named %0">, InGroup<VexingParse>;
+def warn_redundant_parens_around_declarator : Warning<
+  "redundant parentheses surrounding declarator">,
+  InGroup<DiagGroup<"redundant-parens">>, DefaultIgnore;
 def note_additional_parens_for_variable_declaration : Note<
   "add a pair of parentheses to declare a variable">;
+def note_raii_guard_add_name : Note<
+  "add a variable name to declare a %0 initialized with %1">;
+def note_function_style_cast_add_parentheses : Note<
+  "add enclosing parentheses to perform a function-style cast">;
+def note_remove_parens_for_variable_declaration : Note<
+  "remove parentheses to silence this warning">;
 def note_empty_parens_function_call : Note<
   "change this ',' to a ';' to call %0">;
 def note_empty_parens_default_ctor : Note<
@@ -341,7 +359,7 @@ def warn_implicit_function_decl : Warning<
   "implicit declaration of function %0">,
   InGroup<ImplicitFunctionDeclare>, DefaultIgnore;
 def ext_implicit_function_decl : ExtWarn<
-  "implicit declaration of function %0 is invalid in C99">,
+  "implicit declaration of function %0 is invalid in %select{C99|OpenCL}1">,
   InGroup<ImplicitFunctionDeclare>;
 def note_function_suggestion : Note<"did you mean %0?">;
 
@@ -352,8 +370,10 @@ def err_language_linkage_spec_unknown : Error<"unknown linkage language">;
 def err_language_linkage_spec_not_ascii : Error<
   "string literal in language linkage specifier cannot have an "
   "encoding-prefix">;
-def warn_use_out_of_scope_declaration : Warning<
-  "use of out-of-scope declaration of %0">;
+def ext_use_out_of_scope_declaration : ExtWarn<
+  "use of out-of-scope declaration of %0%select{| whose type is not "
+  "compatible with that of an implicit declaration}1">,
+  InGroup<DiagGroup<"out-of-scope-function">>;
 def err_inline_non_function : Error<
   "'inline' can only appear on functions%select{| and non-local variables}0">;
 def err_noreturn_non_function : Error<
@@ -391,9 +411,12 @@ def err_decomp_decl_context : Error<
   "decomposition declaration not permitted in this context">;
 def warn_cxx14_compat_decomp_decl : Warning<
   "decomposition declarations are incompatible with "
-  "C++ standards before C++17">, DefaultIgnore, InGroup<CXXPre1zCompat>;
+  "C++ standards before C++17">, DefaultIgnore, InGroup<CXXPre17Compat>;
 def ext_decomp_decl : ExtWarn<
   "decomposition declarations are a C++17 extension">, InGroup<CXX17>;
+def ext_decomp_decl_cond : ExtWarn<
+  "ISO C++17 does not permit structured binding declaration in a condition">,
+  InGroup<DiagGroup<"binding-in-condition">>;
 def err_decomp_decl_spec : Error<
   "decomposition declaration cannot be declared "
   "%plural{1:'%1'|:with '%1' specifiers}0">;
@@ -505,7 +528,7 @@ def warn_deprecated_copy_operation : Warning<
   "for %0 is deprecated because it has a user-declared "
   "%select{copy %select{assignment operator|constructor}1|destructor}2">,
   InGroup<Deprecated>, DefaultIgnore;
-def warn_cxx1z_compat_exception_spec_in_signature : Warning<
+def warn_cxx17_compat_exception_spec_in_signature : Warning<
   "mangled name of %0 will change in C++17 due to non-throwing exception "
   "specification in function signature">, InGroup<CXX17CompatMangling>;
 
@@ -581,6 +604,7 @@ def warn_redecl_library_builtin : Warning<
 def err_builtin_definition : Error<"definition of builtin function %0">;
 def err_arm_invalid_specialreg : Error<"invalid special register for builtin">;
 def err_invalid_cpu_supports : Error<"invalid cpu feature string for builtin">;
+def err_invalid_cpu_is : Error<"invalid cpu name for builtin">;
 def err_builtin_needs_feature : Error<"%0 needs target feature %1">;
 def err_function_needs_feature
     : Error<"always_inline function %1 requires target feature '%2', but would "
@@ -712,6 +736,19 @@ def err_pragma_options_align_mac68k_target_unsupported : Error<
 def warn_pragma_pack_invalid_alignment : Warning<
   "expected #pragma pack parameter to be '1', '2', '4', '8', or '16'">,
   InGroup<IgnoredPragmas>;
+def warn_pragma_pack_non_default_at_include : Warning<
+  "non-default #pragma pack value changes the alignment of struct or union "
+  "members in the included file">, InGroup<PragmaPackSuspiciousInclude>,
+  DefaultIgnore;
+def warn_pragma_pack_modified_after_include : Warning<
+  "the current #pragma pack aligment value is modified in the included "
+  "file">, InGroup<PragmaPack>;
+def warn_pragma_pack_no_pop_eof : Warning<"unterminated "
+  "'#pragma pack (push, ...)' at end of file">, InGroup<PragmaPack>;
+def note_pragma_pack_here : Note<
+  "previous '#pragma pack' directive that modifies alignment is here">;
+def note_pragma_pack_pop_instead_reset : Note<
+  "did you intend to use '#pragma pack (pop)' instead of '#pragma pack()'?">;
 // Follow the Microsoft implementation.
 def warn_pragma_pack_show : Warning<"value of #pragma pack(show) == %0">;
 def warn_pragma_pack_pop_identifer_and_alignment : Warning<
@@ -1195,21 +1232,27 @@ def err_objc_method_unsupported_param_ret_type : Error<
   "%0 %select{parameter|return}1 type is unsupported; "
   "support for vector types for this target is introduced in %2">;
 
+def warn_messaging_unqualified_id : Warning<
+  "messaging unqualified id">, DefaultIgnore,
+  InGroup<DiagGroup<"objc-messaging-id">>;
+
 // C++ declarations
 def err_static_assert_expression_is_not_constant : Error<
   "static_assert expression is not an integral constant expression">;
 def err_static_assert_failed : Error<"static_assert failed%select{ %1|}0">;
+def err_static_assert_requirement_failed : Error<
+  "static_assert failed due to requirement '%0'%select{ %2|}1">;
 def ext_static_assert_no_message : ExtWarn<
   "static_assert with no message is a C++17 extension">, InGroup<CXX17>;
 def warn_cxx14_compat_static_assert_no_message : Warning<
   "static_assert with no message is incompatible with C++ standards before C++17">,
-  DefaultIgnore, InGroup<CXXPre1zCompat>;
+  DefaultIgnore, InGroup<CXXPre17Compat>;
 
 def ext_inline_variable : ExtWarn<
   "inline variables are a C++17 extension">, InGroup<CXX17>;
 def warn_cxx14_compat_inline_variable : Warning<
   "inline variables are incompatible with C++ standards before C++17">,
-  DefaultIgnore, InGroup<CXXPre1zCompat>;
+  DefaultIgnore, InGroup<CXXPre17Compat>;
 
 def warn_inline_namespace_reopened_noninline : Warning<
   "inline namespace reopened as a non-inline namespace">;
@@ -1313,6 +1356,8 @@ def err_type_defined_in_alias_template : Error<
   "%0 cannot be defined in a type alias template">;
 def err_type_defined_in_condition : Error<
   "%0 cannot be defined in a condition">;
+def err_type_defined_in_enum : Error<
+  "%0 cannot be defined in an enumeration">;
 
 def note_pure_virtual_function : Note<
   "unimplemented pure virtual method %0 in %1">;
@@ -1637,6 +1682,11 @@ def err_conflicting_overriding_cc_attributes : Error<
   "virtual function %0 has different calling convention attributes "
   "%diff{($) than the function it overrides (which has calling convention $)|"
   "than the function it overrides}1,2">;
+def warn_overriding_method_missing_noescape : Warning<
+  "parameter of overriding method should be annotated with "
+  "__attribute__((noescape))">, InGroup<MissingNoEscape>;
+def note_overridden_marked_noescape : Note<
+  "parameter of overridden method is annotated with __attribute__((noescape))">;
 
 def err_covariant_return_inaccessible_base : Error<
   "invalid covariant return for virtual function: %1 is a "
@@ -1938,8 +1988,9 @@ def err_auto_var_requires_init : Error<
   "declaration of variable %0 with deduced type %1 requires an initializer">;
 def err_auto_new_requires_ctor_arg : Error<
   "new expression for type %0 requires a constructor argument">;
-def err_auto_new_list_init : Error<
-  "new expression for type %0 cannot use list-initialization">;
+def ext_auto_new_list_init : Extension<
+  "ISO C++ standards before C++17 do not allow new expression for "
+  "type %0 to use list-initialization">, InGroup<CXX17>;
 def err_auto_var_init_no_expression : Error<
   "initializer for variable %0 with type %1 is empty">;
 def err_auto_var_init_multiple_expressions : Error<
@@ -1964,6 +2015,9 @@ def err_auto_var_deduction_failure_from_init_list : Error<
   "cannot deduce actual type for variable %0 with type %1 from initializer list">;
 def err_auto_new_deduction_failure : Error<
   "new expression for type %0 has incompatible constructor argument of type %1">;
+def err_auto_inconsistent_deduction : Error<
+  "deduced conflicting types %diff{($ vs $) |}0,1"
+  "for initializer list element type">;
 def err_auto_different_deductions : Error<
   "%select{'auto'|'decltype(auto)'|'__auto_type'|template arguments}0 "
   "deduced as %1 in declaration of %2 and "
@@ -1999,7 +2053,7 @@ def err_decltype_auto_compound_type : Error<
 def err_decltype_auto_initializer_list : Error<
   "cannot deduce 'decltype(auto)' from initializer list">;
 
-// C++1z deduced class template specialization types
+// C++17 deduced class template specialization types
 def err_deduced_class_template_compound_type : Error<
   "cannot %select{form pointer to|form reference to|form array of|"
   "form function returning|use parentheses when declaring variable with}0 "
@@ -2151,7 +2205,7 @@ def ext_for_range_begin_end_types_differ : ExtWarn<
   InGroup<CXX17>;
 def warn_for_range_begin_end_types_differ : Warning<
   "'begin' and 'end' returning different types (%0 and %1) is incompatible "
-  "with C++ standards before C++17">, InGroup<CXXPre1zCompat>, DefaultIgnore;
+  "with C++ standards before C++17">, InGroup<CXXPre17Compat>, DefaultIgnore;
 def note_in_for_range: Note<
   "when looking up '%select{begin|end}0' function for range expression "
   "of type %1">;
@@ -2387,8 +2441,9 @@ def err_attribute_requires_positive_integer : Error<
 def err_attribute_requires_opencl_version : Error<
   "%0 attribute requires OpenCL version %1%select{| or above}2">;
 def warn_unsupported_target_attribute
-    : Warning<"Ignoring unsupported '%0' in the target attribute string">,
-    InGroup<IgnoredAttributes>;
+    : Warning<"ignoring %select{unsupported|duplicate}0"
+              "%select{| architecture}1 '%2' in the target attribute string">,
+      InGroup<IgnoredAttributes>;
 def err_attribute_unsupported
     : Error<"%0 attribute is not supported for this target">;
 // The err_*_attribute_argument_not_int are separate because they're used by
@@ -2587,6 +2642,8 @@ def err_attribute_section_invalid_for_target : Error<
   "argument to 'section' attribute is not valid for this target: %0">;
 def warn_mismatched_section : Warning<
   "section does not match previous declaration">, InGroup<Section>;
+def warn_attribute_section_on_redeclaration : Warning<
+  "section attribute is specified on redeclared variable">, InGroup<Section>;
 
 def err_anonymous_property: Error<
   "anonymous property is not supported">;
@@ -2729,7 +2786,7 @@ def err_attribute_weakref_not_global_context : Error<
 def err_attribute_weakref_without_alias : Error<
   "weakref declaration of %0 must also have an alias attribute">;
 def err_alias_not_supported_on_darwin : Error <
-  "only weak aliases are supported on darwin">;
+  "aliases are not supported on darwin">;
 def err_alias_to_undefined : Error<
   "%select{alias|ifunc}0 must point to a defined %select{variable or |}1function">;
 def warn_alias_to_weak_alias : Warning<
@@ -2746,55 +2803,26 @@ def err_ifunc_resolver_return : Error<
   "ifunc resolver function must return a pointer">;
 def err_ifunc_resolver_params : Error<
   "ifunc resolver function must have no parameters">;
+def warn_attribute_wrong_decl_type_str : Warning<
+  "%0 attribute only applies to %1">, InGroup<IgnoredAttributes>;
+def err_attribute_wrong_decl_type_str : Error<
+  warn_attribute_wrong_decl_type_str.Text>;
 def warn_attribute_wrong_decl_type : Warning<
   "%0 attribute only applies to %select{"
   "functions"
   "|unions"
   "|variables and functions"
-  "|functions and global variables"
-  "|functions, variables, and Objective-C interfaces"
   "|functions and methods"
-  "|parameters"
   "|functions, methods and blocks"
-  "|functions, methods, and classes"
   "|functions, methods, and parameters"
-  "|functions, methods, and global variables"
-  "|classes"
-  "|enums"
   "|variables"
-  "|methods"
-  "|fields and global variables"
-  "|structs"
-  "|parameters and typedefs"
-  "|variables and typedefs"
-  "|thread-local variables"
   "|variables and fields"
   "|variables, data members and tag types"
   "|types and namespaces"
-  "|Objective-C interfaces"
-  "|methods and properties"
-  "|functions, methods, and properties"
-  "|struct or union"
-  "|struct, union or class"
-  "|types"
-  "|Objective-C instance methods"
-  "|init methods of interface or class extension declarations"
   "|variables, functions and classes"
-  "|functions, variables, classes, and Objective-C interfaces"
-  "|Objective-C protocols"
-  "|variables with static or thread storage duration"
-  "|functions, methods, properties, and global variables"
-  "|structs, unions, and typedefs"
-  "|structs and typedefs"
-  "|interface or protocol declarations"
   "|kernel functions"
   "|non-K&R-style functions"
-  "|variables, enums, fields and typedefs"
-  "|functions, methods, enums, and classes"
-  "|structs, classes, variables, functions, and inline namespaces"
-  "|variables, functions, methods, types, enumerations, enumerators, labels, and non-static data members"
-  "|classes and enumerations"
-  "|named declarations}1">,
+  "|variables, functions, methods, types, enumerations, enumerators, labels, and non-static data members}1">,
   InGroup<IgnoredAttributes>;
 def err_attribute_wrong_decl_type : Error<warn_attribute_wrong_decl_type.Text>;
 def warn_type_attribute_wrong_type : Warning<
@@ -2879,25 +2907,11 @@ def warn_unguarded_availability :
 def warn_unguarded_availability_new :
   Warning<warn_unguarded_availability.Text>,
   InGroup<UnguardedAvailabilityNew>;
-def warn_partial_availability : Warning<"%0 is only available conditionally">,
-    InGroup<UnguardedAvailability>, DefaultIgnore;
-def warn_partial_availability_new : Warning<warn_partial_availability.Text>,
-  InGroup<UnguardedAvailabilityNew>;
-def note_partial_availability_silence : Note<
-  "annotate %select{%1|anonymous %1}0 with an availability attribute to silence">;
+def note_decl_unguarded_availability_silence : Note<
+  "annotate %select{%1|anonymous %1}0 with an availability attribute to silence this warning">;
 def note_unguarded_available_silence : Note<
   "enclose %0 in %select{an @available|a __builtin_available}1 check to silence"
   " this warning">;
-def warn_partial_message : Warning<"%0 is partial: %1">,
-    InGroup<UnguardedAvailability>, DefaultIgnore;
-def warn_partial_message_new : Warning<warn_partial_message.Text>,
-  InGroup<UnguardedAvailabilityNew>;
-def warn_partial_fwdclass_message : Warning<
-    "%0 may be partial because the receiver type is unknown">,
-    InGroup<UnguardedAvailability>, DefaultIgnore;
-def warn_partial_fwdclass_message_new :
-  Warning<warn_partial_fwdclass_message.Text>,
-  InGroup<UnguardedAvailabilityNew>;
 def warn_at_available_unchecked_use : Warning<
   "%select{@available|__builtin_available}0 does not guard availability here; "
   "use if (%select{@available|__builtin_available}0) instead">,
@@ -3063,6 +3077,8 @@ def warn_impcast_vector_scalar : Warning<
 def warn_impcast_complex_scalar : Warning<
   "implicit conversion discards imaginary component: %0 to %1">,
   InGroup<Conversion>, DefaultIgnore;
+def err_impcast_complex_scalar : Error<
+  "implicit conversion from %0 to %1 is not permitted in C++">;
 def warn_impcast_float_precision : Warning<
   "implicit conversion loses floating-point precision: %0 to %1">,
   InGroup<Conversion>, DefaultIgnore;
@@ -3188,6 +3204,9 @@ def warn_int_to_void_pointer_cast : Warning<
   "cast to %1 from smaller integer type %0">,
   InGroup<IntToVoidPointerCast>;
 
+def warn_attribute_ignored_for_field_of_type : Warning<
+  "%0 attribute ignored for field of type %1">,
+  InGroup<IgnoredAttributes>;
 def warn_no_underlying_type_specified_for_enum_bitfield : Warning<
   "enums in the Microsoft ABI are signed integers by default; consider giving "
   "the enum %0 an unsigned underlying type to make this code portable">,
@@ -3906,7 +3925,7 @@ def err_template_nontype_parm_bad_type : Error<
 def warn_cxx14_compat_template_nontype_parm_auto_type : Warning<
   "non-type template parameters declared with %0 are incompatible with C++ "
   "standards before C++17">,
-  DefaultIgnore, InGroup<CXXPre1zCompat>;
+  DefaultIgnore, InGroup<CXXPre17Compat>;
 def err_template_param_default_arg_redefinition : Error<
   "template parameter redefines default argument">;
 def note_template_param_prev_default_arg : Note<
@@ -4080,6 +4099,13 @@ def err_pointer_to_member_call_drops_quals : Error<
 def err_pointer_to_member_oper_value_classify: Error<
   "pointer-to-member function type %0 can only be called on an "
   "%select{rvalue|lvalue}1">;
+def ext_pointer_to_const_ref_member_on_rvalue : Extension<
+  "invoking a pointer to a 'const &' member function on an rvalue is a C++2a extension">,
+  InGroup<CXX2a>, SFINAEFailure;
+def warn_cxx17_compat_pointer_to_const_ref_member_on_rvalue : Warning<
+  "invoking a pointer to a 'const &' member function on an rvalue is "
+  "incompatible with C++ standards before C++2a">,
+  InGroup<CXXPre2aCompatPedantic>, DefaultIgnore;
 def ext_ms_deref_template_argument: ExtWarn<
   "non-type template argument containing a dereference operation is a "
   "Microsoft extension">, InGroup<MicrosoftTemplate>;
@@ -4681,6 +4707,14 @@ def note_deleted_assign_field : Note<
 def warn_undefined_internal : Warning<
   "%select{function|variable}0 %q1 has internal linkage but is not defined">,
   InGroup<DiagGroup<"undefined-internal">>;
+def err_undefined_internal_type : Error<
+  "%select{function|variable}0 %q1 is used but not defined in this "
+  "translation unit, and cannot be defined in any other translation unit "
+  "because its type does not have linkage">;
+def ext_undefined_internal_type : Extension<
+  "ISO C++ requires a definition in this translation unit for "
+  "%select{function|variable}0 %q1 because its type does not have linkage">,
+  InGroup<DiagGroup<"undefined-internal-type">>;
 def warn_undefined_inline : Warning<"inline function %q0 is not defined">,
   InGroup<DiagGroup<"undefined-inline">>;
 def err_undefined_inline_var : Error<"inline variable %q0 is not defined">;
@@ -4746,6 +4780,9 @@ def err_thread_non_thread : Error<
 def err_thread_thread_different_kind : Error<
   "thread-local declaration of %0 with %select{static|dynamic}1 initialization "
   "follows declaration with %select{dynamic|static}1 initialization">;
+def err_mismatched_owning_module : Error<
+  "declaration of %0 in %select{the global module|module %2}1 follows "
+  "declaration in %select{the global module|module %4}3">;
 def err_redefinition_different_type : Error<
   "redefinition of %0 with a different type%diff{: $ vs $|}1,2">;
 def err_redefinition_different_kind : Error<
@@ -5164,6 +5201,28 @@ def ext_flexible_array_empty_aggregate_gnu : Extension<
 def ext_flexible_array_union_gnu : Extension<
   "flexible array member %0 in a union is a GNU extension">, InGroup<GNUFlexibleArrayUnionMember>;
 
+def err_flexible_array_not_at_end : Error<
+  "flexible array member %0 with type %1 is not at the end of"
+  " %select{struct|interface|union|class|enum}2">;
+def err_objc_variable_sized_type_not_at_end : Error<
+  "field %0 with variable sized type %1 is not at the end of class">;
+def note_next_field_declaration : Note<
+  "next field declaration is here">;
+def note_next_ivar_declaration : Note<
+  "next %select{instance variable declaration|synthesized instance variable}0"
+  " is here">;
+def err_synthesize_variable_sized_ivar : Error<
+  "synthesized property with variable size type %0"
+  " requires an existing instance variable">;
+def err_flexible_array_arc_retainable : Error<
+  "ARC forbids flexible array members with retainable object type">;
+def warn_variable_sized_ivar_visibility : Warning<
+  "field %0 with variable sized type %1 is not visible to subclasses and"
+  " can conflict with their instance variables">, InGroup<ObjCFlexibleArray>;
+def warn_superclass_variable_sized_type_not_at_end : Warning<
+  "field %0 can overwrite instance variable %1 with variable sized type %2"
+  " in superclass %3">, InGroup<ObjCFlexibleArray>;
+
 let CategoryName = "ARC Semantic Issue" in {
 
 // ARC-mode diagnostics.
@@ -5462,9 +5521,6 @@ def err_offsetof_incomplete_type : Error<
 def err_offsetof_record_type : Error<
   "offsetof requires struct, union, or class type, %0 invalid">;
 def err_offsetof_array_type : Error<"offsetof requires array type, %0 invalid">;
-def ext_offsetof_extended_field_designator : Extension<
-  "using extended field designator is an extension">,
-  InGroup<DiagGroup<"extended-offsetof">>;
 def ext_offsetof_non_pod_type : ExtWarn<"offset of on non-POD type %0">,
   InGroup<InvalidOffsetof>;
 def ext_offsetof_non_standardlayout_type : ExtWarn<
@@ -5475,6 +5531,12 @@ def err_offsetof_field_of_virtual_base : Error<
 def warn_sub_ptr_zero_size_types : Warning<
   "subtraction of pointers to type %0 of zero size has undefined behavior">,
   InGroup<PointerArith>;
+def warn_pointer_arith_null_ptr : Warning<
+  "performing pointer arithmetic on a null pointer has undefined behavior%select{| if the offset is nonzero}0">,
+  InGroup<NullPointerArithmetic>, DefaultIgnore;
+def warn_gnu_null_ptr_arith : Warning<
+  "arithmetic on a null pointer treated as a cast from integer to pointer is a GNU extension">,
+  InGroup<NullPointerArithmetic>, DefaultIgnore;
 
 def warn_floatingpoint_eq : Warning<
   "comparing floating point with == or != is unsafe">,
@@ -5862,6 +5924,8 @@ def err_typecheck_assign_const : Error<
   "cannot assign to %select{non-|}1static data member %2 "
   "with const-qualified type %3|"
   "cannot assign to non-static data member within const member function %1|"
+  "cannot assign to %select{variable %2|non-static data member %2|lvalue}1 "
+  "with %select{|nested }3const-qualified data member %4|"
   "read-only variable is not assignable}0">;
 
 def note_typecheck_assign_const : Note<
@@ -5869,25 +5933,39 @@ def note_typecheck_assign_const : Note<
   "function %1 which returns const-qualified type %2 declared here|"
   "variable %1 declared const here|"
   "%select{non-|}1static data member %2 declared const here|"
-  "member function %q1 is declared const here}0">;
+  "member function %q1 is declared const here|"
+  "%select{|nested }1data member %2 declared const here}0">;
+
+def warn_unsigned_always_true_comparison : Warning<
+  "result of comparison of %select{%3|unsigned expression}0 %2 "
+  "%select{unsigned expression|%3}0 is always %4">,
+  InGroup<TautologicalUnsignedZeroCompare>;
+def warn_unsigned_enum_always_true_comparison : Warning<
+  "result of comparison of %select{%3|unsigned enum expression}0 %2 "
+  "%select{unsigned enum expression|%3}0 is always %4">,
+  InGroup<TautologicalUnsignedEnumZeroCompare>;
+def warn_tautological_constant_compare : Warning<
+  "result of comparison %select{%3|%1}0 %2 "
+  "%select{%1|%3}0 is always %4">,
+  InGroup<TautologicalConstantCompare>;
 
 def warn_mixed_sign_comparison : Warning<
   "comparison of integers of different signs: %0 and %1">,
   InGroup<SignCompare>, DefaultIgnore;
-def warn_lunsigned_always_true_comparison : Warning<
-  "comparison of unsigned%select{| enum}2 expression %0 is always %1">,
-  InGroup<TautologicalCompare>;
 def warn_out_of_range_compare : Warning<
-  "comparison of %select{constant %0|true|false}1 with " 
-  "%select{expression of type %2|boolean expression}3 is always "
-  "%select{false|true}4">, InGroup<TautologicalOutOfRangeCompare>;
-def warn_runsigned_always_true_comparison : Warning<
-  "comparison of %0 unsigned%select{| enum}2 expression is always %1">,
-  InGroup<TautologicalCompare>;
+  "result of comparison of %select{constant %0|true|false}1 with " 
+  "%select{expression of type %2|boolean expression}3 is always %4">,
+  InGroup<TautologicalOutOfRangeCompare>;
+def warn_tautological_bool_compare : Warning<warn_out_of_range_compare.Text>,
+  InGroup<TautologicalConstantCompare>;
 def warn_comparison_of_mixed_enum_types : Warning<
   "comparison of two values with different enumeration types"
   "%diff{ ($ and $)|}0,1">,
-  InGroup<DiagGroup<"enum-compare">>;
+  InGroup<EnumCompare>;
+def warn_comparison_of_mixed_enum_types_switch : Warning<
+  "comparison of two values with different enumeration types in switch statement"
+  "%diff{ ($ and $)|}0,1">,
+  InGroup<EnumCompareSwitch>;
 def warn_null_in_arithmetic_operation : Warning<
   "use of NULL in arithmetic operation">,
   InGroup<NullArithmetic>;
@@ -6391,12 +6469,12 @@ def warn_non_virtual_dtor : Warning<
 def warn_delete_non_virtual_dtor : Warning<
   "%select{delete|destructor}0 called on non-final %1 that has "
   "virtual functions but non-virtual destructor">,
-  InGroup<DeleteNonVirtualDtor>, DefaultIgnore;
+  InGroup<DeleteNonVirtualDtor>, DefaultIgnore, ShowInSystemHeader;
 def note_delete_non_virtual : Note<
   "qualify call to silence this warning">;
 def warn_delete_abstract_non_virtual_dtor : Warning<
   "%select{delete|destructor}0 called on %1 that is abstract but has "
-  "non-virtual destructor">, InGroup<DeleteNonVirtualDtor>;
+  "non-virtual destructor">, InGroup<DeleteNonVirtualDtor>, ShowInSystemHeader;
 def warn_overloaded_virtual : Warning<
   "%q0 hides overloaded virtual %select{function|functions}1">,
   InGroup<OverloadedVirtual>, DefaultIgnore;
@@ -6420,8 +6498,8 @@ def warn_overaligned_type : Warning<
   "guarantees %2 bytes">,
   InGroup<OveralignedType>, DefaultIgnore;
 def warn_aligned_allocation_unavailable :Warning<
-  "aligned %select{allocation|deallocation}0 function of type '%1' possibly "
-  "unavailable on %2">, InGroup<AlignedAllocationUnavailable>, DefaultError;
+  "aligned %select{allocation|deallocation}0 function of type '%1' is only "
+  "available on %2 %3 or newer">, InGroup<AlignedAllocationUnavailable>, DefaultError;
 def note_silence_unligned_allocation_unavailable : Note<
   "if you supply your own aligned allocation functions, use "
   "-Wno-aligned-allocation-unavailable to silence this diagnostic">;
@@ -6458,8 +6536,6 @@ let CategoryName = "Lambda Issue" in {
     "%0 can appear only once in a capture list">;
   def err_reference_capture_with_reference_default : Error<
     "'&' cannot precede a capture when the capture default is '&'">;
-  def err_this_capture_with_copy_default : Error<
-    "'this' cannot be explicitly captured when the capture default is '='">;
   def err_copy_capture_with_copy_default : Error<
     "'&' must precede a capture when the capture default is '='">;
   def err_capture_does_not_name_variable : Error<
@@ -6526,12 +6602,20 @@ let CategoryName = "Lambda Issue" in {
   def err_init_capture_deduction_failure_from_init_list : Error<
     "cannot deduce type for lambda capture %0 from initializer list">;
 
-  // C++1z '*this' captures.
+  // C++17 '*this' captures.
   def warn_cxx14_compat_star_this_lambda_capture : Warning<
     "by value capture of '*this' is incompatible with C++ standards before C++17">,
-     InGroup<CXXPre1zCompat>, DefaultIgnore;
-  def ext_star_this_lambda_capture_cxx1z : ExtWarn<
+     InGroup<CXXPre17Compat>, DefaultIgnore;
+  def ext_star_this_lambda_capture_cxx17 : ExtWarn<
     "capture of '*this' by copy is a C++17 extension">, InGroup<CXX17>;
+
+  // C++2a [=, this] captures.
+  def warn_cxx17_compat_equals_this_lambda_capture : Warning<
+    "explicit capture of 'this' with a capture default of '=' is incompatible "
+    "with C++ standards before C++2a">, InGroup<CXXPre2aCompat>, DefaultIgnore;
+  def ext_equals_this_lambda_capture_cxx2a : ExtWarn<
+    "explicit capture of 'this' with a capture default of '=' "
+    "is a C++2a extension">, InGroup<CXX2a>;
 }
 
 def err_return_in_captured_stmt : Error<
@@ -6981,8 +7065,8 @@ def err_atomic_op_needs_atomic : Error<
   "address argument to atomic operation must be a pointer to _Atomic "
   "type (%0 invalid)">;
 def err_atomic_op_needs_non_const_atomic : Error<
-  "address argument to atomic operation must be a pointer to non-const _Atomic "
-  "type (%0 invalid)">;
+  "address argument to atomic operation must be a pointer to non-%select{const|constant}0 _Atomic "
+  "type (%1 invalid)">;
 def err_atomic_op_needs_non_const_pointer : Error<
   "address argument to atomic operation must be a pointer to non-const "
   "type (%0 invalid)">;
@@ -6998,6 +7082,8 @@ def err_atomic_op_bitwise_needs_atomic_int : Error<
 def warn_atomic_op_has_invalid_memory_order : Warning<
   "memory order argument to atomic operation is invalid">,
   InGroup<DiagGroup<"atomic-memory-ordering">>;
+def err_atomic_op_has_invalid_synch_scope : Error<
+  "synchronization scope argument to atomic operation is invalid">;
 
 def err_overflow_builtin_must_be_int : Error<
   "operand argument to overflow builtin must be an integer (%0 invalid)">;
@@ -7199,11 +7285,11 @@ def warn_unused_volatile : Warning<
 
 def ext_cxx14_attr : Extension<
   "use of the %0 attribute is a C++14 extension">, InGroup<CXX14>;
-def ext_cxx1z_attr : Extension<
+def ext_cxx17_attr : Extension<
   "use of the %0 attribute is a C++17 extension">, InGroup<CXX17>;
 
 def warn_unused_comparison : Warning<
-  "%select{%select{|in}1equality|relational}0 comparison result unused">,
+  "%select{equality|inequality|relational|three-way}0 comparison result unused">,
   InGroup<UnusedComparison>;
 def note_inequality_comparison_to_or_assign : Note<
   "use '|=' to turn this inequality comparison into an or-assignment">;
@@ -7315,8 +7401,8 @@ def err_invalid_conversion_between_vector_and_integer : Error<
 def err_opencl_function_pointer : Error<
   "pointers to functions are not allowed">;
 
-def err_opencl_taking_function_address : Error<
-  "taking address of function is not allowed">;
+def err_opencl_taking_address_capture : Error<
+  "taking address of a capture is not allowed">;
 
 def err_invalid_conversion_between_vector_and_scalar : Error<
   "invalid conversion between vector type %0 and scalar type %1">;
@@ -7457,6 +7543,9 @@ def err_ambiguous_derived_to_base_conv : Error<
 def err_ambiguous_memptr_conv : Error<
   "ambiguous conversion from pointer to member of %select{base|derived}0 "
   "class %1 to pointer to member of %select{derived|base}0 class %2:%3">;
+def ext_ms_ambiguous_direct_base : ExtWarn<
+  "accessing inaccessible direct base %0 of %1 is a Microsoft extension">,
+  InGroup<MicrosoftInaccessibleBase>;
 
 def err_memptr_conv_via_virtual : Error<
   "conversion from pointer to member of class %0 to pointer to member "
@@ -7526,6 +7615,11 @@ def err_operator_delete_dependent_param_type : Error<
   "%0 cannot take a dependent type as first parameter; use %1 instead">;
 def err_operator_delete_param_type : Error<
   "first parameter of %0 must have type %1">;
+def err_destroying_operator_delete_not_usual : Error<
+  "destroying operator delete can have only an optional size and optional "
+  "alignment parameter">;
+def note_implicit_delete_this_in_destructor_here : Note<
+  "while checking implicit 'delete this' for virtual destructor">;
 
 // C++ literal operators
 def err_literal_operator_outside_namespace : Error<
@@ -7831,6 +7925,8 @@ def err_type_tag_for_datatype_too_large : Error<
   "'type_tag_for_datatype' attribute requires the initializer to be "
   "an %select{integer|integral}0 constant expression "
   "that can be represented by a 64 bit integer">;
+def err_tag_index_out_of_range : Error<
+  "%select{type tag|argument}0 index %1 is greater than the number of arguments specified">;
 def warn_type_tag_for_datatype_wrong_kind : Warning<
   "this type tag was not designed to be used with this function">,
   InGroup<TypeSafety>;
@@ -7868,6 +7964,8 @@ def err_builtin_annotation_first_arg : Error<
   "first argument to __builtin_annotation must be an integer">;
 def err_builtin_annotation_second_arg : Error<
   "second argument to __builtin_annotation must be a non-wide string constant">;
+def err_msvc_annotation_wide_str : Error<
+  "arguments to __annotation must be wide string constants">;
 
 // CFString checking
 def err_cfstring_literal_not_string_constant : Error<
@@ -8195,12 +8293,12 @@ def err_c99_array_usage_cxx : Error<
   "feature, not permitted in C++">;
 def err_type_unsupported : Error<
   "%0 is not supported on this target">;
-def err_nsconsumed_attribute_mismatch : Error<
+def warn_nsconsumed_attribute_mismatch : Warning<
   "overriding method has mismatched ns_consumed attribute on its"
-  " parameter">;
-def err_nsreturns_retained_attribute_mismatch : Error<
+  " parameter">, InGroup<NSConsumedMismatch>;
+def warn_nsreturns_retained_attribute_mismatch : Warning<
   "overriding method has mismatched ns_returns_%select{not_retained|retained}0"
-  " attributes">;
+  " attributes">, InGroup<NSReturnsMismatch>;
   
 def note_getter_unavailable : Note<
   "or because setter is declared here, but no getter method %0 is found">;
@@ -8364,8 +8462,6 @@ def err_opencl_scalar_type_rank_greater_than_vector_type : Error<
     "element. (%0 and %1)">;
 def err_bad_kernel_param_type : Error<
   "%0 cannot be used as the type of a kernel parameter">;
-def err_opencl_implicit_function_decl : Error<
-  "implicit declaration of function %0 is invalid in OpenCL">;
 def err_record_with_pointers_kernel_param : Error<
   "%select{struct|union}0 kernel parameters may not contain pointers">;
 def note_within_field_of_type : Note<
@@ -8518,6 +8614,8 @@ def err_omp_expected_var_name_member_expr : Error<
   "expected variable name%select{| or data member of current class}0">;
 def err_omp_expected_var_name_member_expr_or_array_item : Error<
   "expected variable name%select{|, data member of current class}0, array element or array section">;
+def err_omp_expected_addressable_lvalue_or_array_item : Error<
+  "expected addressable lvalue expression, array element or array section">;
 def err_omp_expected_named_var_member_or_array_expression: Error<
   "expected expression containing only member accesses and/or array sections based on named variables">;
 def err_omp_bit_fields_forbidden_in_clause : Error<
@@ -8525,7 +8623,7 @@ def err_omp_bit_fields_forbidden_in_clause : Error<
 def err_array_section_does_not_specify_contiguous_storage : Error<
   "array section does not specify contiguous storage">;
 def err_omp_union_type_not_allowed : Error<
-  "mapped storage cannot be derived from a union">;
+  "mapping of union members is not allowed">;
 def err_omp_expected_access_to_data_field : Error<
   "expected access to data field">;
 def err_omp_multiple_array_items_in_map_clause : Error<
@@ -8612,6 +8710,8 @@ def err_omp_declare_target_to_and_link : Error<
 def warn_omp_not_in_target_context : Warning<
   "declaration is not declared in any declare target region">,
   InGroup<OpenMPTarget>;
+def err_omp_function_in_link_clause : Error<
+  "function name is not allowed in 'link' clause">;
 def err_omp_aligned_expected_array_or_ptr : Error<
   "argument of aligned clause should be array"
   "%select{ or pointer|, pointer, reference to array or reference to pointer}1"
@@ -8670,6 +8770,12 @@ def err_omp_reduction_in_task : Error<
   "reduction variables may not be accessed in an explicit task">;
 def err_omp_reduction_id_not_compatible : Error<
   "list item of type %0 is not valid for specified reduction operation: unable to provide default initialization value">;
+def err_omp_in_reduction_not_task_reduction : Error<
+  "in_reduction variable must appear in a task_reduction clause">;
+def err_omp_reduction_identifier_mismatch : Error<
+  "in_reduction variable must have the same reduction operation as in a task_reduction clause">;
+def note_omp_previous_reduction_identifier : Note<
+  "previously marked as task_reduction with different reduction operation">;
 def err_omp_prohibited_region : Error<
   "region cannot be%select{| closely}0 nested inside '%1' region"
   "%select{|; perhaps you forget to enclose 'omp %3' directive into a parallel region?|"
@@ -8746,9 +8852,9 @@ def err_omp_function_expected : Error<
 def err_omp_wrong_cancel_region : Error<
   "one of 'for', 'parallel', 'sections' or 'taskgroup' is expected">;
 def err_omp_parent_cancel_region_nowait : Error<
-  "parent region for 'omp %select{cancellation point/cancel}0' construct cannot be nowait">;
+  "parent region for 'omp %select{cancellation point|cancel}0' construct cannot be nowait">;
 def err_omp_parent_cancel_region_ordered : Error<
-  "parent region for 'omp %select{cancellation point/cancel}0' construct cannot be ordered">;
+  "parent region for 'omp %select{cancellation point|cancel}0' construct cannot be ordered">;
 def err_omp_reduction_wrong_type : Error<"reduction type cannot be %select{qualified with 'const', 'volatile' or 'restrict'|a function|a reference|an array}0 type">;
 def err_omp_wrong_var_in_declare_reduction : Error<"only %select{'omp_priv' or 'omp_orig'|'omp_in' or 'omp_out'}0 variables are allowed in %select{initializer|combiner}0 expression">;
 def err_omp_declare_reduction_redefinition : Error<"redefinition of user-defined reduction for type %0">;
@@ -8793,16 +8899,10 @@ def err_omp_expected_base_var_name : Error<
   "expected variable name as a base of the array %select{subscript|section}0">;
 def err_omp_map_shared_storage : Error<
   "variable already marked as mapped in current construct">;
-def err_omp_not_mappable_type : Error<
-  "type %0 is not mappable to target">;
 def err_omp_invalid_map_type_for_directive : Error<
   "%select{map type '%1' is not allowed|map type must be specified}0 for '#pragma omp %2'">;
 def err_omp_no_clause_for_directive : Error<
   "expected at least one %0 clause for '#pragma omp %1'">;
-def note_omp_polymorphic_in_target : Note<
-  "mappable type cannot be polymorphic">;
-def note_omp_static_member_in_target : Note<
-  "mappable type cannot contain static members">;
 def err_omp_threadprivate_in_clause : Error<
   "threadprivate variables are not allowed in '%0' clause">;
 def err_omp_wrong_ordered_loop_count : Error<
@@ -8821,12 +8921,6 @@ def note_omp_critical_hint_here : Note<
   "%select{|previous }0'hint' clause with value '%1'">;
 def note_omp_critical_no_hint : Note<
   "%select{|previous }0directive with no 'hint' clause specified">;
-def err_omp_firstprivate_distribute_private_teams : Error<
-  "private variable in '#pragma omp teams' cannot be firstprivate in '#pragma omp distribute'">;
-def err_omp_firstprivate_and_lastprivate_in_distribute : Error<
-  "lastprivate variable cannot be firstprivate in '#pragma omp distribute'">;
-def err_omp_firstprivate_distribute_in_teams_reduction : Error<
-  "reduction variable in '#pragma omp teams' cannot be firstprivate in '#pragma omp distribute'">;
 def err_omp_depend_clause_thread_simd : Error<
   "'depend' clauses cannot be mixed with '%0' clause">;
 def err_omp_depend_sink_expected_loop_iteration : Error<
@@ -8871,6 +8965,10 @@ def err_omp_reduction_non_addressable_expression : Error<
   "expected addressable reduction item for the task-based directives">;
 def err_omp_reduction_with_nogroup : Error<
   "'reduction' clause cannot be used with 'nogroup' clause">;
+def err_omp_reduction_vla_unsupported : Error<
+  "cannot generate code for reduction on %select{|array section, which requires a }0variable length array">;
+def err_omp_linear_distribute_var_non_loop_iteration : Error<
+  "only loop iteration variables are allowed in 'linear' clause in distribute directives">;
 } // end of OpenMP category
 
 let CategoryName = "Related Result Type Issue" in {
@@ -8912,6 +9010,14 @@ def err_module_redefinition : Error<
   "redefinition of module '%0'">;
 def note_prev_module_definition : Note<"previously defined here">;
 def note_prev_module_definition_from_ast_file : Note<"module loaded from '%0'">;
+def err_module_not_defined : Error<
+  "definition of module '%0' is not available; use -fmodule-file= to specify "
+  "path to precompiled module interface">;
+def err_module_redeclaration : Error<
+  "translation unit contains multiple module declarations">;
+def note_prev_module_declaration : Note<"previous module declaration is here">;
+def err_module_declaration_missing : Error<
+  "missing 'export module' declaration in module interface unit">;
 def err_module_private_specialization : Error<
   "%select{template|partial|member}0 specialization cannot be "
   "declared __module_private__">;
diff --git a/include/clang/Basic/DiagnosticSerializationKinds.td b/include/clang/Basic/DiagnosticSerializationKinds.td
index 420ccebbfaf03..3949bc2146f6b 100644
--- a/include/clang/Basic/DiagnosticSerializationKinds.td
+++ b/include/clang/Basic/DiagnosticSerializationKinds.td
@@ -77,6 +77,8 @@ def err_imported_module_not_found : Error<
     "module '%0' in AST file '%1' (imported by AST file '%2') "
     "is not defined in any loaded module map file; "
     "maybe you need to load '%3'?">, DefaultFatal;
+def note_imported_by_pch_module_not_found : Note<
+    "consider adding '%0' to the header search path">;
 def err_imported_module_modmap_changed : Error<
     "module '%0' imported by AST file '%1' found in a different module map file"
     " (%2) than when the importing AST file was built (%3)">, DefaultFatal;
@@ -122,6 +124,45 @@ def note_second_module_difference : Note<
 def err_module_odr_violation_different_instantiations : Error<
   "instantiation of %q0 is different in different modules">;
 
+def err_module_odr_violation_definition_data : Error <
+  "%q0 has different definitions in different modules; first difference is "
+  "%select{definition in module '%2'|defined here}1 found "
+  "%select{"
+  "%4 base %plural{1:class|:classes}4|"
+  "%4 virtual base %plural{1:class|:classes}4|"
+  "%ordinal4 base class with type %5|"
+  "%ordinal4 %select{non-virtual|virtual}5 base class %6|"
+  "%ordinal4 base class %5 with "
+  "%select{public|protected|private|no}6 access specifier}3">;
+
+def note_module_odr_violation_definition_data : Note <
+  "but in '%0' found "
+  "%select{"
+  "%2 base %plural{1:class|:classes}2|"
+  "%2 virtual base %plural{1:class|:classes}2|"
+  "%ordinal2 base class with different type %3|"
+  "%ordinal2 %select{non-virtual|virtual}3 base class %4|"
+  "%ordinal2 base class %3 with "
+  "%select{public|protected|private|no}4 access specifier}1">;
+
+def err_module_odr_violation_template_parameter : Error <
+  "%q0 has different definitions in different modules; first difference is "
+  "%select{definition in module '%2'|defined here}1 found "
+  "%select{"
+  "unnamed template parameter|"
+  "template parameter %4|"
+  "template parameter with %select{no |}4default argument|"
+  "template parameter with default argument}3">;
+
+
+def note_module_odr_violation_template_parameter : Note <
+  "but in '%0' found "
+  "%select{"
+  "unnamed template parameter %2|"
+  "template parameter %2|"
+  "template parameter with %select{no |}2default argument|"
+  "template parameter with different default argument}1">;
+
 def err_module_odr_violation_mismatch_decl : Error<
   "%q0 has different definitions in different modules; first difference is "
   "%select{definition in module '%2'|defined here}1 found "
diff --git a/include/clang/Basic/IdentifierTable.h b/include/clang/Basic/IdentifierTable.h
index f94b2c9b2f420..8e3c15afbfcd4 100644
--- a/include/clang/Basic/IdentifierTable.h
+++ b/include/clang/Basic/IdentifierTable.h
@@ -1,4 +1,4 @@
-//===--- IdentifierTable.h - Hash table for identifier lookup ---*- C++ -*-===//
+//===- IdentifierTable.h - Hash table for identifier lookup -----*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -6,11 +6,11 @@
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
-///
+//
 /// \file
 /// \brief Defines the clang::IdentifierInfo, clang::IdentifierTable, and
 /// clang::Selector interfaces.
-///
+//
 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_CLANG_BASIC_IDENTIFIERTABLE_H
@@ -18,35 +18,29 @@
 
 #include "clang/Basic/LLVM.h"
 #include "clang/Basic/TokenKinds.h"
+#include "llvm/ADT/DenseMapInfo.h"
 #include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Support/Allocator.h"
+#include "llvm/Support/PointerLikeTypeTraits.h"
+#include "llvm/Support/type_traits.h"
 #include <cassert>
 #include <cstddef>
 #include <cstdint>
 #include <cstring>
-#include <new>
 #include <string>
 #include <utility>
 
-namespace llvm {
-
-  template <typename T> struct DenseMapInfo;
-
-} // end namespace llvm
-
 namespace clang {
 
-  class LangOptions;
-  class IdentifierInfo;
-  class IdentifierTable;
-  class SourceLocation;
-  class MultiKeywordSelector; // private class used by Selector
-  class DeclarationName;      // AST class that stores declaration names
+class IdentifierInfo;
+class LangOptions;
+class MultiKeywordSelector;
+class SourceLocation;
 
-  /// \brief A simple pair of identifier info and location.
-  typedef std::pair<IdentifierInfo*, SourceLocation> IdentifierLocPair;
+/// \brief A simple pair of identifier info and location.
+using IdentifierLocPair = std::pair<IdentifierInfo *, SourceLocation>;
 
 /// One of these records is kept for each identifier that
 /// is lexed.  This contains information about whether the token was \#define'd,
@@ -85,8 +79,10 @@ class IdentifierInfo {
                                    // keyword.
   // 29 bit left in 64-bit word.
 
-  void *FETokenInfo;               // Managed by the language front-end.
-  llvm::StringMapEntry<IdentifierInfo*> *Entry;
+  // Managed by the language front-end.
+  void *FETokenInfo = nullptr;
+
+  llvm::StringMapEntry<IdentifierInfo *> *Entry = nullptr;
 
 public:
   IdentifierInfo();
@@ -104,7 +100,6 @@ public:
 
   /// \brief Return the beginning of the actual null-terminated string for this
   /// identifier.
-  ///
   const char *getNameStart() const {
     if (Entry) return Entry->getKeyData();
     // FIXME: This is gross. It would be best not to embed specific details
@@ -112,12 +107,12 @@ public:
     // The 'this' pointer really points to a
     // std::pair<IdentifierInfo, const char*>, where internal pointer
     // points to the external string data.
-    typedef std::pair<IdentifierInfo, const char*> actualtype;
+    using actualtype = std::pair<IdentifierInfo, const char *>;
+
     return ((const actualtype*) this)->second;
   }
 
   /// \brief Efficiently return the length of this identifier info.
-  ///
   unsigned getLength() const {
     if (Entry) return Entry->getKeyLength();
     // FIXME: This is gross. It would be best not to embed specific details
@@ -125,7 +120,8 @@ public:
     // The 'this' pointer really points to a
     // std::pair<IdentifierInfo, const char*>, where internal pointer
     // points to the external string data.
-    typedef std::pair<IdentifierInfo, const char*> actualtype;
+    using actualtype = std::pair<IdentifierInfo, const char *>;
+
     const char* p = ((const actualtype*) this)->second - 2;
     return (((unsigned) p[0]) | (((unsigned) p[1]) << 8)) - 1;
   }
@@ -465,7 +461,7 @@ public:
 class IdentifierTable {
   // Shark shows that using MallocAllocator is *much* slower than using this
   // BumpPtrAllocator!
-  typedef llvm::StringMap<IdentifierInfo*, llvm::BumpPtrAllocator> HashTableTy;
+  using HashTableTy = llvm::StringMap<IdentifierInfo *, llvm::BumpPtrAllocator>;
   HashTableTy HashTable;
 
   IdentifierInfoLookup* ExternalLookup;
@@ -551,8 +547,8 @@ public:
     return *II;
   }
 
-  typedef HashTableTy::const_iterator iterator;
-  typedef HashTableTy::const_iterator const_iterator;
+  using iterator = HashTableTy::const_iterator;
+  using const_iterator = HashTableTy::const_iterator;
 
   iterator begin() const { return HashTable.begin(); }
   iterator end() const   { return HashTable.end(); }
@@ -654,7 +650,9 @@ class Selector {
     MultiArg = 0x3,
     ArgFlags = ZeroArg|OneArg
   };
-  uintptr_t InfoPtr; // a pointer to the MultiKeywordSelector or IdentifierInfo.
+
+  // a pointer to the MultiKeywordSelector or IdentifierInfo.
+  uintptr_t InfoPtr = 0;
 
   Selector(IdentifierInfo *II, unsigned nArgs) {
     InfoPtr = reinterpret_cast<uintptr_t>(II);
@@ -662,6 +660,7 @@ class Selector {
     assert(nArgs < 2 && "nArgs not equal to 0/1");
     InfoPtr |= nArgs+1;
   }
+
   Selector(MultiKeywordSelector *SI) {
     InfoPtr = reinterpret_cast<uintptr_t>(SI);
     assert((InfoPtr & ArgFlags) == 0 &&"Insufficiently aligned IdentifierInfo");
@@ -692,7 +691,7 @@ public:
 
   /// The default ctor should only be used when creating data structures that
   ///  will contain selectors.
-  Selector() : InfoPtr(0) {}
+  Selector() = default;
   Selector(uintptr_t V) : InfoPtr(V) {}
 
   /// operator==/!= - Indicate whether the specified selectors are identical.
@@ -776,7 +775,8 @@ public:
 /// \brief This table allows us to fully hide how we implement
 /// multi-keyword caching.
 class SelectorTable {
-  void *Impl;  // Actually a SelectorTableImpl
+  // Actually a SelectorTableImpl
+  void *Impl;
 
 public:
   SelectorTable();
@@ -793,6 +793,7 @@ public:
   Selector getUnarySelector(IdentifierInfo *ID) {
     return Selector(ID, 1);
   }
+
   Selector getNullarySelector(IdentifierInfo *ID) {
     return Selector(ID, 0);
   }
@@ -848,7 +849,7 @@ public:
   unsigned ExtraKindOrNumArgs;
 };
 
-}  // end namespace clang
+}  // namespace clang
 
 namespace llvm {
 
@@ -856,11 +857,11 @@ namespace llvm {
 /// DenseSets.
 template <>
 struct DenseMapInfo<clang::Selector> {
-  static inline clang::Selector getEmptyKey() {
+  static clang::Selector getEmptyKey() {
     return clang::Selector::getEmptyMarker();
   }
 
-  static inline clang::Selector getTombstoneKey() {
+  static clang::Selector getTombstoneKey() {
     return clang::Selector::getTombstoneMarker();
   }
 
@@ -874,16 +875,13 @@ struct DenseMapInfo<clang::Selector> {
 template <>
 struct isPodLike<clang::Selector> { static const bool value = true; };
 
-template <typename T> class PointerLikeTypeTraits;
-
 template<>
-class PointerLikeTypeTraits<clang::Selector> {
-public:
-  static inline const void *getAsVoidPointer(clang::Selector P) {
+struct PointerLikeTypeTraits<clang::Selector> {
+  static const void *getAsVoidPointer(clang::Selector P) {
     return P.getAsOpaquePtr();
   }
 
-  static inline clang::Selector getFromVoidPointer(const void *P) {
+  static clang::Selector getFromVoidPointer(const void *P) {
     return clang::Selector(reinterpret_cast<uintptr_t>(P));
   }
 
@@ -893,13 +891,12 @@ public:
 // Provide PointerLikeTypeTraits for IdentifierInfo pointers, which
 // are not guaranteed to be 8-byte aligned.
 template<>
-class PointerLikeTypeTraits<clang::IdentifierInfo*> {
-public:
-  static inline void *getAsVoidPointer(clang::IdentifierInfo* P) {
+struct PointerLikeTypeTraits<clang::IdentifierInfo*> {
+  static void *getAsVoidPointer(clang::IdentifierInfo* P) {
     return P;
   }
 
-  static inline clang::IdentifierInfo *getFromVoidPointer(void *P) {
+  static clang::IdentifierInfo *getFromVoidPointer(void *P) {
     return static_cast<clang::IdentifierInfo*>(P);
   }
 
@@ -907,19 +904,18 @@ public:
 };
 
 template<>
-class PointerLikeTypeTraits<const clang::IdentifierInfo*> {
-public:
-  static inline const void *getAsVoidPointer(const clang::IdentifierInfo* P) {
+struct PointerLikeTypeTraits<const clang::IdentifierInfo*> {
+  static const void *getAsVoidPointer(const clang::IdentifierInfo* P) {
     return P;
   }
 
-  static inline const clang::IdentifierInfo *getFromVoidPointer(const void *P) {
+  static const clang::IdentifierInfo *getFromVoidPointer(const void *P) {
     return static_cast<const clang::IdentifierInfo*>(P);
   }
 
   enum { NumLowBitsAvailable = 1 };
 };
 
-} // end namespace llvm
+} // namespace llvm
 
 #endif // LLVM_CLANG_BASIC_IDENTIFIERTABLE_H
diff --git a/include/clang/Basic/LLVM.h b/include/clang/Basic/LLVM.h
index f32ab5e11bd4a..e60284d1b4459 100644
--- a/include/clang/Basic/LLVM.h
+++ b/include/clang/Basic/LLVM.h
@@ -35,6 +35,7 @@ namespace llvm {
   template<typename T, unsigned N> class SmallVector;
   template<typename T> class SmallVectorImpl;
   template<typename T> class Optional;
+  template <class T> class Expected;
 
   template<typename T>
   struct SaveAndRestore;
@@ -71,6 +72,9 @@ namespace clang {
   using llvm::SmallVectorImpl;
   using llvm::SaveAndRestore;
 
+  // Error handling.
+  using llvm::Expected;
+
   // Reference counting.
   using llvm::IntrusiveRefCntPtr;
   using llvm::IntrusiveRefCntPtrInfo;
diff --git a/include/clang/Basic/LangOptions.def b/include/clang/Basic/LangOptions.def
index c9230e0aaa6f3..ca3a0e349d62f 100644
--- a/include/clang/Basic/LangOptions.def
+++ b/include/clang/Basic/LangOptions.def
@@ -82,6 +82,7 @@
 // FIXME: A lot of the BENIGN_ options should be COMPATIBLE_ instead.
 LANGOPT(C99               , 1, 0, "C99")
 LANGOPT(C11               , 1, 0, "C11")
+LANGOPT(C17               , 1, 0, "C17")
 LANGOPT(MSVCCompat        , 1, 0, "Microsoft Visual C++ full compatibility mode")
 LANGOPT(MicrosoftExt      , 1, 0, "Microsoft C++ extensions")
 LANGOPT(AsmBlocks         , 1, 0, "Microsoft inline asm blocks")
@@ -89,7 +90,7 @@ LANGOPT(Borland           , 1, 0, "Borland extensions")
 LANGOPT(CPlusPlus         , 1, 0, "C++")
 LANGOPT(CPlusPlus11       , 1, 0, "C++11")
 LANGOPT(CPlusPlus14       , 1, 0, "C++14")
-LANGOPT(CPlusPlus1z       , 1, 0, "C++1z")
+LANGOPT(CPlusPlus17       , 1, 0, "C++17")
 LANGOPT(CPlusPlus2a       , 1, 0, "C++2a")
 LANGOPT(ObjC1             , 1, 0, "Objective-C 1")
 LANGOPT(ObjC2             , 1, 0, "Objective-C 2")
@@ -124,7 +125,9 @@ LANGOPT(ZVector           , 1, 0, "System z vector extensions")
 LANGOPT(Exceptions        , 1, 0, "exception handling")
 LANGOPT(ObjCExceptions    , 1, 0, "Objective-C exceptions")
 LANGOPT(CXXExceptions     , 1, 0, "C++ exceptions")
+LANGOPT(DWARFExceptions   , 1, 0, "dwarf exception handling")
 LANGOPT(SjLjExceptions    , 1, 0, "setjmp-longjump exception handling")
+LANGOPT(SEHExceptions     , 1, 0, "SEH .xdata exception handling")
 LANGOPT(ExternCNoUnwind   , 1, 0, "Assume extern C functions don't unwind")
 LANGOPT(TraditionalCPP    , 1, 0, "traditional CPP emulation")
 LANGOPT(RTTI              , 1, 1, "run-time type information")
@@ -137,6 +140,8 @@ LANGOPT(GNUAsm            , 1, 1, "GNU-style inline assembly")
 LANGOPT(CoroutinesTS      , 1, 0, "C++ coroutines TS")
 LANGOPT(RelaxedTemplateTemplateArgs, 1, 0, "C++17 relaxed matching of template template arguments")
 
+LANGOPT(DoubleSquareBracketAttributes, 1, 0, "'[[]]' attributes extension for all language standard modes")
+
 BENIGN_LANGOPT(ThreadsafeStatics , 1, 1, "thread-safe static initializers")
 LANGOPT(POSIXThreads      , 1, 0, "POSIX thread support")
 LANGOPT(Blocks            , 1, 0, "blocks extension to C")
@@ -175,7 +180,8 @@ BENIGN_LANGOPT(ObjCGCBitmapPrint , 1, 0, "printing of GC's bitmap layout for __w
 
 BENIGN_LANGOPT(AccessControl     , 1, 1, "C++ access control")
 LANGOPT(CharIsSigned      , 1, 1, "signed char")
-LANGOPT(ShortWChar        , 1, 0, "unsigned short wchar_t")
+LANGOPT(WCharSize         , 4, 0, "width of wchar_t")
+LANGOPT(WCharIsSigned        , 1, 0, "signed or unsigned wchar_t")
 ENUM_LANGOPT(MSPointerToMemberRepresentationMethod, PragmaMSPointersToMembersKind, 2, PPTMK_BestCase, "member-pointer representation method")
 ENUM_LANGOPT(DefaultCallingConv, DefaultCallingConvention, 3, DCC_None, "default calling convention")
 
@@ -267,6 +273,9 @@ LANGOPT(SanitizeAddressFieldPadding, 2, 0, "controls how aggressive is ASan "
                                            "aggressive, 2: more aggressive)")
 
 LANGOPT(XRayInstrument, 1, 0, "controls whether to do XRay instrumentation")
+LANGOPT(XRayAlwaysEmitCustomEvents, 1, 0,
+        "controls whether to always emit intrinsic calls to "
+        "__xray_customevent(...) builtin.")
 
 BENIGN_LANGOPT(AllowEditorPlaceholders, 1, 0,
                "allow editor placeholders in source")
diff --git a/include/clang/Basic/LangOptions.h b/include/clang/Basic/LangOptions.h
index 8488515d2b677..f7a43adefad0c 100644
--- a/include/clang/Basic/LangOptions.h
+++ b/include/clang/Basic/LangOptions.h
@@ -77,7 +77,8 @@ public:
     DCC_CDecl,
     DCC_FastCall,
     DCC_StdCall,
-    DCC_VectorCall
+    DCC_VectorCall,
+    DCC_RegCall
   };
 
   enum AddrSpaceMapMangling { ASMM_Target, ASMM_On, ASMM_Off };
@@ -197,6 +198,10 @@ public:
   bool allowsNonTrivialObjCLifetimeQualifiers() const {
     return ObjCAutoRefCount || ObjCWeak;
   }
+
+  bool assumeFunctionsAreConvergent() const {
+    return (CUDA && CUDAIsDevice) || OpenCL;
+  }
 };
 
 /// \brief Floating point control options
diff --git a/include/clang/Basic/Module.h b/include/clang/Basic/Module.h
index 177175eae9650..6631721e35314 100644
--- a/include/clang/Basic/Module.h
+++ b/include/clang/Basic/Module.h
@@ -1,4 +1,4 @@
-//===--- Module.h - Describe a module ---------------------------*- C++ -*-===//
+//===- Module.h - Describe a module -----------------------------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -6,12 +6,13 @@
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
-///
+//
 /// \file
 /// \brief Defines the clang::Module class, which describes a module in the
 /// source code.
-///
+//
 //===----------------------------------------------------------------------===//
+
 #ifndef LLVM_CLANG_BASIC_MODULE_H
 #define LLVM_CLANG_BASIC_MODULE_H
 
@@ -19,6 +20,7 @@
 #include "clang/Basic/SourceLocation.h"
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/DenseSet.h"
+#include "llvm/ADT/Optional.h"
 #include "llvm/ADT/PointerIntPair.h"
 #include "llvm/ADT/PointerUnion.h"
 #include "llvm/ADT/SetVector.h"
@@ -26,22 +28,28 @@
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/iterator_range.h"
+#include <array>
+#include <cassert>
+#include <cstdint>
+#include <ctime>
 #include <string>
 #include <utility>
 #include <vector>
 
 namespace llvm {
-  class raw_ostream;
-}
+
+class raw_ostream;
+
+} // namespace llvm
 
 namespace clang {
   
 class LangOptions;
 class TargetInfo;
-class IdentifierInfo;
-  
+
 /// \brief Describes the name of a module.
-typedef SmallVector<std::pair<std::string, SourceLocation>, 2> ModuleId;
+using ModuleId = SmallVector<std::pair<std::string, SourceLocation>, 2>;
 
 /// The signature of a module, which is a hash of the AST content.
 struct ASTFileSignature : std::array<uint32_t, 5> {
@@ -68,7 +76,11 @@ public:
     ModuleMapModule,
 
     /// \brief This is a C++ Modules TS module interface unit.
-    ModuleInterfaceUnit
+    ModuleInterfaceUnit,
+
+    /// \brief This is a fragment of the global module within some C++ Modules
+    /// TS module.
+    GlobalModuleFragment,
   };
 
   /// \brief The kind of this module.
@@ -81,7 +93,7 @@ public:
   /// \brief The build directory of this module. This is the directory in
   /// which the module is notionally built, and relative to which its headers
   /// are found.
-  const DirectoryEntry *Directory;
+  const DirectoryEntry *Directory = nullptr;
 
   /// \brief The presumed file name for the module map defining this module.
   /// Only non-empty when building from preprocessed source.
@@ -95,6 +107,10 @@ public:
 
   /// \brief The name of the umbrella entry, as written in the module map.
   std::string UmbrellaAsWritten;
+
+  /// \brief The module through which entities defined in this module will
+  /// eventually be exposed, for use in "private" modules.
+  std::string ExportAsModule;
   
 private:
   /// \brief The submodules of this module, indexed by name.
@@ -106,7 +122,7 @@ private:
 
   /// \brief The AST file if this is a top-level module which has a
   /// corresponding serialized AST file, or null otherwise.
-  const FileEntry *ASTFile;
+  const FileEntry *ASTFile = nullptr;
 
   /// \brief The top-level headers associated with this module.
   llvm::SmallSetVector<const FileEntry *, 2> TopHeaders;
@@ -173,7 +189,7 @@ public:
 
   /// \brief An individual requirement: a feature name and a flag indicating
   /// the required state of that feature.
-  typedef std::pair<std::string, bool> Requirement;
+  using Requirement = std::pair<std::string, bool>;
 
   /// \brief The set of language features required to use this module.
   ///
@@ -262,7 +278,7 @@ public:
   ///
   /// The pointer is the module being re-exported, while the bit will be true
   /// to indicate that this is a wildcard export.
-  typedef llvm::PointerIntPair<Module *, 1, bool> ExportDecl;
+  using ExportDecl = llvm::PointerIntPair<Module *, 1, bool>;
   
   /// \brief The set of export declarations.
   SmallVector<ExportDecl, 2> Exports;
@@ -294,9 +310,9 @@ public:
   /// \brief A library or framework to link against when an entity from this
   /// module is used.
   struct LinkLibrary {
-    LinkLibrary() : IsFramework(false) { }
+    LinkLibrary() = default;
     LinkLibrary(const std::string &Library, bool IsFramework)
-      : Library(Library), IsFramework(IsFramework) { }
+        : Library(Library), IsFramework(IsFramework) {}
     
     /// \brief The library to link against.
     ///
@@ -305,7 +321,7 @@ public:
     std::string Library;
 
     /// \brief Whether this is a framework rather than a library.
-    bool IsFramework;
+    bool IsFramework = false;
   };
 
   /// \brief The set of libraries or frameworks to link against when
@@ -391,6 +407,15 @@ public:
     return IsFramework && Parent && Parent->isPartOfFramework();
   }
 
+  /// Set the parent of this module. This should only be used if the parent
+  /// could not be set during module creation.
+  void setParent(Module *M) {
+    assert(!Parent);
+    Parent = M;
+    Parent->SubModuleIndex[Name] = Parent->SubModules.size();
+    Parent->SubModules.push_back(this);
+  }
+
   /// \brief Retrieve the full name of this module, including the path from
   /// its top-level module.
   /// \param AllowStringLiterals If \c true, components that might not be
@@ -415,7 +440,6 @@ public:
   const Module *getTopLevelModule() const;
   
   /// \brief Retrieve the name of the top-level module.
-  ///
   StringRef getTopLevelModuleName() const {
     return getTopLevelModule()->Name;
   }
@@ -508,8 +532,8 @@ public:
 
   unsigned getVisibilityID() const { return VisibilityID; }
 
-  typedef std::vector<Module *>::iterator submodule_iterator;
-  typedef std::vector<Module *>::const_iterator submodule_const_iterator;
+  using submodule_iterator = std::vector<Module *>::iterator;
+  using submodule_const_iterator = std::vector<Module *>::const_iterator;
   
   submodule_iterator submodule_begin() { return SubModules.begin(); }
   submodule_const_iterator submodule_begin() const {return SubModules.begin();}
@@ -534,7 +558,6 @@ public:
   }
 
   /// \brief Print the module map for this module to the given stream. 
-  ///
   void print(raw_ostream &OS, unsigned Indent = 0) const;
   
   /// \brief Dump the contents of this module to the given output stream.
@@ -547,7 +570,7 @@ private:
 /// \brief A set of visible modules.
 class VisibleModuleSet {
 public:
-  VisibleModuleSet() : Generation(0) {}
+  VisibleModuleSet() = default;
   VisibleModuleSet(VisibleModuleSet &&O)
       : ImportLocs(std::move(O.ImportLocs)), Generation(O.Generation ? 1 : 0) {
     O.ImportLocs.clear();
@@ -582,13 +605,15 @@ public:
 
   /// \brief A callback to call when a module is made visible (directly or
   /// indirectly) by a call to \ref setVisible.
-  typedef llvm::function_ref<void(Module *M)> VisibleCallback;
+  using VisibleCallback = llvm::function_ref<void(Module *M)>;
+
   /// \brief A callback to call when a module conflict is found. \p Path
   /// consists of a sequence of modules from the conflicting module to the one
   /// made visible, where each was exported by the next.
-  typedef llvm::function_ref<void(ArrayRef<Module *> Path,
-                                  Module *Conflict, StringRef Message)>
-      ConflictCallback;
+  using ConflictCallback =
+      llvm::function_ref<void(ArrayRef<Module *> Path, Module *Conflict,
+                         StringRef Message)>;
+
   /// \brief Make a specific module visible.
   void setVisible(Module *M, SourceLocation Loc,
                   VisibleCallback Vis = [](Module *) {},
@@ -599,11 +624,11 @@ private:
   /// Import locations for each visible module. Indexed by the module's
   /// VisibilityID.
   std::vector<SourceLocation> ImportLocs;
+
   /// Visibility generation, bumped every time the visibility state changes.
-  unsigned Generation;
+  unsigned Generation = 0;
 };
 
-} // end namespace clang
-
+} // namespace clang
 
 #endif // LLVM_CLANG_BASIC_MODULE_H
diff --git a/include/clang/Basic/OpenCLExtensions.def b/include/clang/Basic/OpenCLExtensions.def
index 360fec4281ac1..c3319d2d808b9 100644
--- a/include/clang/Basic/OpenCLExtensions.def
+++ b/include/clang/Basic/OpenCLExtensions.def
@@ -79,6 +79,10 @@ OPENCLEXT_INTERNAL(cl_clang_storage_class_specifiers, 100, ~0U)
 OPENCLEXT_INTERNAL(cl_amd_media_ops, 100, ~0U)
 OPENCLEXT_INTERNAL(cl_amd_media_ops2, 100, ~0U)
 
+// Intel OpenCL extensions
+OPENCLEXT_INTERNAL(cl_intel_subgroups, 120, ~0U)
+OPENCLEXT_INTERNAL(cl_intel_subgroups_short, 120, ~0U)
+
 #undef OPENCLEXT_INTERNAL
 
 #ifdef OPENCLEXT
diff --git a/include/clang/Basic/OpenMPKinds.def b/include/clang/Basic/OpenMPKinds.def
index 645ed52b59cab..6a0bed7ab15fc 100644
--- a/include/clang/Basic/OpenMPKinds.def
+++ b/include/clang/Basic/OpenMPKinds.def
@@ -274,6 +274,7 @@ OPENMP_CLAUSE(from, OMPFromClause)
 OPENMP_CLAUSE(use_device_ptr, OMPUseDevicePtrClause)
 OPENMP_CLAUSE(is_device_ptr, OMPIsDevicePtrClause)
 OPENMP_CLAUSE(task_reduction,  OMPTaskReductionClause)
+OPENMP_CLAUSE(in_reduction,  OMPInReductionClause)
 
 // Clauses allowed for OpenMP directive 'parallel'.
 OPENMP_PARALLEL_CLAUSE(if)
@@ -434,6 +435,7 @@ OPENMP_TASK_CLAUSE(untied)
 OPENMP_TASK_CLAUSE(mergeable)
 OPENMP_TASK_CLAUSE(depend)
 OPENMP_TASK_CLAUSE(priority)
+OPENMP_TASK_CLAUSE(in_reduction)
 
 // Clauses allowed for OpenMP directive 'atomic'.
 OPENMP_ATOMIC_CLAUSE(read)
@@ -452,6 +454,7 @@ OPENMP_TARGET_CLAUSE(depend)
 OPENMP_TARGET_CLAUSE(defaultmap)
 OPENMP_TARGET_CLAUSE(firstprivate)
 OPENMP_TARGET_CLAUSE(is_device_ptr)
+OPENMP_TARGET_CLAUSE(reduction)
 
 // Clauses allowed for OpenMP directive 'target data'.
 OPENMP_TARGET_DATA_CLAUSE(if)
@@ -557,6 +560,7 @@ OPENMP_TASKLOOP_CLAUSE(grainsize)
 OPENMP_TASKLOOP_CLAUSE(nogroup)
 OPENMP_TASKLOOP_CLAUSE(num_tasks)
 OPENMP_TASKLOOP_CLAUSE(reduction)
+OPENMP_TASKLOOP_CLAUSE(in_reduction)
 
 // Clauses allowed for OpenMP directive 'taskloop simd'.
 OPENMP_TASKLOOP_SIMD_CLAUSE(if)
@@ -578,6 +582,7 @@ OPENMP_TASKLOOP_SIMD_CLAUSE(grainsize)
 OPENMP_TASKLOOP_SIMD_CLAUSE(nogroup)
 OPENMP_TASKLOOP_SIMD_CLAUSE(num_tasks)
 OPENMP_TASKLOOP_SIMD_CLAUSE(reduction)
+OPENMP_TASKLOOP_SIMD_CLAUSE(in_reduction)
 
 // Clauses allowed for OpenMP directive 'critical'.
 OPENMP_CRITICAL_CLAUSE(hint)
@@ -741,9 +746,9 @@ OPENMP_TEAMS_DISTRIBUTE_PARALLEL_FOR_CLAUSE(private)
 OPENMP_TEAMS_DISTRIBUTE_PARALLEL_FOR_CLAUSE(shared)
 OPENMP_TEAMS_DISTRIBUTE_PARALLEL_FOR_CLAUSE(reduction)
 OPENMP_TEAMS_DISTRIBUTE_PARALLEL_FOR_CLAUSE(schedule)
-OPENMP_TEAMS_DISTRIBUTE_PARALLEL_FOR_CLAUSE(linear)
 OPENMP_TEAMS_DISTRIBUTE_PARALLEL_FOR_CLAUSE(num_teams)
 OPENMP_TEAMS_DISTRIBUTE_PARALLEL_FOR_CLAUSE(thread_limit)
+OPENMP_TEAMS_DISTRIBUTE_PARALLEL_FOR_CLAUSE(copyin)
 
 // Clauses allowed for OpenMP directive 'target teams'.
 OPENMP_TARGET_TEAMS_CLAUSE(if)
@@ -801,7 +806,6 @@ OPENMP_TARGET_TEAMS_DISTRIBUTE_PARALLEL_FOR_CLAUSE(dist_schedule)
 OPENMP_TARGET_TEAMS_DISTRIBUTE_PARALLEL_FOR_CLAUSE(num_threads)
 OPENMP_TARGET_TEAMS_DISTRIBUTE_PARALLEL_FOR_CLAUSE(proc_bind)
 OPENMP_TARGET_TEAMS_DISTRIBUTE_PARALLEL_FOR_CLAUSE(schedule)
-OPENMP_TARGET_TEAMS_DISTRIBUTE_PARALLEL_FOR_CLAUSE(linear)
 
 // Clauses allowed for OpenMP directive
 // 'target teams distribute parallel for simd'.
diff --git a/include/clang/Basic/OperatorKinds.def b/include/clang/Basic/OperatorKinds.def
index 34ad7644cd2ba..d86294bac9020 100644
--- a/include/clang/Basic/OperatorKinds.def
+++ b/include/clang/Basic/OperatorKinds.def
@@ -89,6 +89,7 @@ OVERLOADED_OPERATOR(EqualEqual           , "=="  , equalequal         , false, t
 OVERLOADED_OPERATOR(ExclaimEqual         , "!="  , exclaimequal       , false, true , false)
 OVERLOADED_OPERATOR(LessEqual            , "<="  , lessequal          , false, true , false)
 OVERLOADED_OPERATOR(GreaterEqual         , ">="  , greaterequal       , false, true , false)
+OVERLOADED_OPERATOR(Spaceship            , "<=>" , spaceship          , false, true , false)
 OVERLOADED_OPERATOR(AmpAmp               , "&&"  , ampamp             , false, true , false)
 OVERLOADED_OPERATOR(PipePipe             , "||"  , pipepipe           , false, true , false)
 OVERLOADED_OPERATOR(PlusPlus             , "++"  , plusplus           , true , true , false)
diff --git a/include/clang/Basic/OperatorPrecedence.h b/include/clang/Basic/OperatorPrecedence.h
index 640749fdd10d5..94978f81e543a 100644
--- a/include/clang/Basic/OperatorPrecedence.h
+++ b/include/clang/Basic/OperatorPrecedence.h
@@ -36,10 +36,11 @@ namespace prec {
     And             = 8,    // &
     Equality        = 9,    // ==, !=
     Relational      = 10,   //  >=, <=, >, <
-    Shift           = 11,   // <<, >>
-    Additive        = 12,   // -, +
-    Multiplicative  = 13,   // *, /, %
-    PointerToMember = 14    // .*, ->*
+    Spaceship       = 11,   // <=>
+    Shift           = 12,   // <<, >>
+    Additive        = 13,   // -, +
+    Multiplicative  = 14,   // *, /, %
+    PointerToMember = 15    // .*, ->*
   };
 }
 
diff --git a/include/clang/Basic/SanitizerBlacklist.h b/include/clang/Basic/SanitizerBlacklist.h
index e651e18316833..1ae5c36eea99a 100644
--- a/include/clang/Basic/SanitizerBlacklist.h
+++ b/include/clang/Basic/SanitizerBlacklist.h
@@ -15,29 +15,30 @@
 #define LLVM_CLANG_BASIC_SANITIZERBLACKLIST_H
 
 #include "clang/Basic/LLVM.h"
+#include "clang/Basic/SanitizerSpecialCaseList.h"
+#include "clang/Basic/Sanitizers.h"
 #include "clang/Basic/SourceLocation.h"
 #include "clang/Basic/SourceManager.h"
 #include "llvm/ADT/StringRef.h"
-#include "llvm/Support/SpecialCaseList.h"
 #include <memory>
 
 namespace clang {
 
 class SanitizerBlacklist {
-  std::unique_ptr<llvm::SpecialCaseList> SCL;
+  std::unique_ptr<SanitizerSpecialCaseList> SSCL;
   SourceManager &SM;
 
 public:
   SanitizerBlacklist(const std::vector<std::string> &BlacklistPaths,
                      SourceManager &SM);
-  bool isBlacklistedGlobal(StringRef GlobalName,
+  bool isBlacklistedGlobal(SanitizerMask Mask, StringRef GlobalName,
                            StringRef Category = StringRef()) const;
-  bool isBlacklistedType(StringRef MangledTypeName,
+  bool isBlacklistedType(SanitizerMask Mask, StringRef MangledTypeName,
                          StringRef Category = StringRef()) const;
-  bool isBlacklistedFunction(StringRef FunctionName) const;
-  bool isBlacklistedFile(StringRef FileName,
+  bool isBlacklistedFunction(SanitizerMask Mask, StringRef FunctionName) const;
+  bool isBlacklistedFile(SanitizerMask Mask, StringRef FileName,
                          StringRef Category = StringRef()) const;
-  bool isBlacklistedLocation(SourceLocation Loc,
+  bool isBlacklistedLocation(SanitizerMask Mask, SourceLocation Loc,
                              StringRef Category = StringRef()) const;
 };
 
diff --git a/include/clang/Basic/SanitizerSpecialCaseList.h b/include/clang/Basic/SanitizerSpecialCaseList.h
new file mode 100644
index 0000000000000..e3252022a44f1
--- /dev/null
+++ b/include/clang/Basic/SanitizerSpecialCaseList.h
@@ -0,0 +1,54 @@
+//===--- SanitizerSpecialCaseList.h - SCL for sanitizers --------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// An extension of SpecialCaseList to allowing querying sections by
+// SanitizerMask.
+//
+//===----------------------------------------------------------------------===//
+#ifndef LLVM_CLANG_BASIC_SANITIZERSPECIALCASELIST_H
+#define LLVM_CLANG_BASIC_SANITIZERSPECIALCASELIST_H
+
+#include "clang/Basic/LLVM.h"
+#include "clang/Basic/Sanitizers.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/Support/SpecialCaseList.h"
+#include <memory>
+
+namespace clang {
+
+class SanitizerSpecialCaseList : public llvm::SpecialCaseList {
+public:
+  static std::unique_ptr<SanitizerSpecialCaseList>
+  create(const std::vector<std::string> &Paths, std::string &Error);
+
+  static std::unique_ptr<SanitizerSpecialCaseList>
+  createOrDie(const std::vector<std::string> &Paths);
+
+  // Query blacklisted entries if any bit in Mask matches the entry's section.
+  bool inSection(SanitizerMask Mask, StringRef Prefix, StringRef Query,
+                 StringRef Category = StringRef()) const;
+
+protected:
+  // Initialize SanitizerSections.
+  void createSanitizerSections();
+
+  struct SanitizerSection {
+    SanitizerSection(SanitizerMask SM, SectionEntries &E)
+        : Mask(SM), Entries(E){};
+
+    SanitizerMask Mask;
+    SectionEntries &Entries;
+  };
+
+  std::vector<SanitizerSection> SanitizerSections;
+};
+
+} // end namespace clang
+
+#endif
diff --git a/include/clang/Basic/Sanitizers.def b/include/clang/Basic/Sanitizers.def
index 71b11974dbfde..30d5cc8166dc6 100644
--- a/include/clang/Basic/Sanitizers.def
+++ b/include/clang/Basic/Sanitizers.def
@@ -44,12 +44,17 @@ SANITIZER("address", Address)
 // Kernel AddressSanitizer (KASan)
 SANITIZER("kernel-address", KernelAddress)
 
+SANITIZER("hwaddress", HWAddress)
+
 // MemorySanitizer
 SANITIZER("memory", Memory)
 
 // libFuzzer
 SANITIZER("fuzzer", Fuzzer)
 
+// libFuzzer-required instrumentation, no linking.
+SANITIZER("fuzzer-no-link", FuzzerNoLink)
+
 // ThreadSanitizer
 SANITIZER("thread", Thread)
 
@@ -60,6 +65,7 @@ SANITIZER("leak", Leak)
 SANITIZER("alignment", Alignment)
 SANITIZER("array-bounds", ArrayBounds)
 SANITIZER("bool", Bool)
+SANITIZER("builtin", Builtin)
 SANITIZER("enum", Enum)
 SANITIZER("float-cast-overflow", FloatCastOverflow)
 SANITIZER("float-divide-by-zero", FloatDivideByZero)
@@ -107,11 +113,12 @@ SANITIZER("safe-stack", SafeStack)
 // -fsanitize=undefined includes all the sanitizers which have low overhead, no
 // ABI or address space layout implications, and only catch undefined behavior.
 SANITIZER_GROUP("undefined", Undefined,
-                Alignment | Bool | ArrayBounds | Enum | FloatCastOverflow |
-                    FloatDivideByZero | IntegerDivideByZero | NonnullAttribute |
-                    Null | ObjectSize | PointerOverflow | Return |
-                    ReturnsNonnullAttribute | Shift | SignedIntegerOverflow |
-                    Unreachable | VLABound | Function | Vptr)
+                Alignment | Bool | Builtin | ArrayBounds | Enum |
+                    FloatCastOverflow | FloatDivideByZero |
+                    IntegerDivideByZero | NonnullAttribute | Null | ObjectSize |
+                    PointerOverflow | Return | ReturnsNonnullAttribute | Shift |
+                    SignedIntegerOverflow | Unreachable | VLABound | Function |
+                    Vptr)
 
 // -fsanitize=undefined-trap is an alias for -fsanitize=undefined.
 SANITIZER_GROUP("undefined-trap", UndefinedTrap, Undefined)
@@ -130,6 +137,9 @@ SANITIZER("efficiency-working-set", EfficiencyWorkingSet)
 SANITIZER_GROUP("efficiency-all", Efficiency,
                 EfficiencyCacheFrag | EfficiencyWorkingSet)
 
+// Scudo hardened allocator
+SANITIZER("scudo", Scudo)
+
 // Magic group, containing all sanitizers. For example, "-fno-sanitize=all"
 // can be used to disable all the sanitizers.
 SANITIZER_GROUP("all", All, ~0ULL)
diff --git a/include/clang/Basic/Sanitizers.h b/include/clang/Basic/Sanitizers.h
index 5317720095e06..1b936c7d115cf 100644
--- a/include/clang/Basic/Sanitizers.h
+++ b/include/clang/Basic/Sanitizers.h
@@ -80,7 +80,7 @@ SanitizerMask parseSanitizerValue(StringRef Value, bool AllowGroups);
 SanitizerMask expandSanitizerGroups(SanitizerMask Kinds);
 
 /// Return the sanitizers which do not affect preprocessing.
-static inline SanitizerMask getPPTransparentSanitizers() {
+inline SanitizerMask getPPTransparentSanitizers() {
   return SanitizerKind::CFI | SanitizerKind::Integer |
          SanitizerKind::Nullability | SanitizerKind::Undefined;
 }
diff --git a/include/clang/Basic/SourceLocation.h b/include/clang/Basic/SourceLocation.h
index 12aa0e4f57170..7418b50f9d83b 100644
--- a/include/clang/Basic/SourceLocation.h
+++ b/include/clang/Basic/SourceLocation.h
@@ -39,10 +39,9 @@ class SourceManager;
 class FileID {
   /// \brief A mostly-opaque identifier, where 0 is "invalid", >0 is 
   /// this module, and <-1 is something loaded from another module.
-  int ID;
-public:
-  FileID() : ID(0) {}
+  int ID = 0;
 
+public:
   bool isValid() const { return ID != 0; }
   bool isInvalid() const { return ID == 0; }
 
@@ -86,17 +85,15 @@ private:
 ///
 /// It is important that this type remains small. It is currently 32 bits wide.
 class SourceLocation {
-  unsigned ID;
+  unsigned ID = 0;
   friend class SourceManager;
   friend class ASTReader;
   friend class ASTWriter;
   enum : unsigned {
     MacroIDBit = 1U << 31
   };
-public:
-
-  SourceLocation() : ID(0) {}
 
+public:
   bool isFileID() const  { return (ID & MacroIDBit) == 0; }
   bool isMacroID() const { return (ID & MacroIDBit) != 0; }
 
@@ -172,6 +169,11 @@ public:
     return getFromRawEncoding((unsigned)(uintptr_t)Encoding);
   }
 
+  static bool isPairOfFileLocations(SourceLocation Start, SourceLocation End) {
+    return Start.isValid() && Start.isFileID() && End.isValid() &&
+           End.isFileID();
+  }
+
   void print(raw_ostream &OS, const SourceManager &SM) const;
   std::string printToString(const SourceManager &SM) const;
   void dump(const SourceManager &SM) const;
@@ -193,8 +195,9 @@ inline bool operator<(const SourceLocation &LHS, const SourceLocation &RHS) {
 class SourceRange {
   SourceLocation B;
   SourceLocation E;
+
 public:
-  SourceRange(): B(SourceLocation()), E(SourceLocation()) {}
+  SourceRange() = default;
   SourceRange(SourceLocation loc) : B(loc), E(loc) {}
   SourceRange(SourceLocation begin, SourceLocation end) : B(begin), E(end) {}
 
@@ -225,9 +228,10 @@ public:
 /// range.
 class CharSourceRange { 
   SourceRange Range;
-  bool IsTokenRange;
+  bool IsTokenRange = false;
+
 public:
-  CharSourceRange() : IsTokenRange(false) {}
+  CharSourceRange() = default;
   CharSourceRange(SourceRange R, bool ITR) : Range(R), IsTokenRange(ITR) {}
 
   static CharSourceRange getTokenRange(SourceRange R) {
@@ -325,10 +329,11 @@ class FileEntry;
 ///
 /// This is useful for argument passing to functions that expect both objects.
 class FullSourceLoc : public SourceLocation {
-  const SourceManager *SrcMgr;
+  const SourceManager *SrcMgr = nullptr;
+
 public:
   /// \brief Creates a FullSourceLoc where isValid() returns \c false.
-  explicit FullSourceLoc() : SrcMgr(nullptr) {}
+  FullSourceLoc() = default;
 
   explicit FullSourceLoc(SourceLocation Loc, const SourceManager &SM)
     : SourceLocation(Loc), SrcMgr(&SM) {}
@@ -455,8 +460,7 @@ namespace llvm {
 
   // Teach SmallPtrSet how to handle SourceLocation.
   template<>
-  class PointerLikeTypeTraits<clang::SourceLocation> {
-  public:
+  struct PointerLikeTypeTraits<clang::SourceLocation> {
     static inline void *getAsVoidPointer(clang::SourceLocation L) {
       return L.getPtrEncoding();
     }
diff --git a/include/clang/Basic/SourceManager.h b/include/clang/Basic/SourceManager.h
index ed3f8dfa86e74..397ad2e77fb5e 100644
--- a/include/clang/Basic/SourceManager.h
+++ b/include/clang/Basic/SourceManager.h
@@ -1,4 +1,4 @@
-//===--- SourceManager.h - Track and cache source files ---------*- C++ -*-===//
+//===- SourceManager.h - Track and cache source files -----------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -6,7 +6,7 @@
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
-///
+//
 /// \file
 /// \brief Defines the SourceManager interface.
 ///
@@ -29,14 +29,13 @@
 /// location in the source where the macro was originally defined,
 /// and the presumed location is where the line directive states that
 /// the line is 17, or any other line.
-///
+//
 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_CLANG_BASIC_SOURCEMANAGER_H
 #define LLVM_CLANG_BASIC_SOURCEMANAGER_H
 
 #include "clang/Basic/FileManager.h"
-#include "clang/Basic/LLVM.h"
 #include "clang/Basic/SourceLocation.h"
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/BitVector.h"
@@ -49,10 +48,8 @@
 #include "llvm/Support/Allocator.h"
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/MemoryBuffer.h"
-#include <algorithm>
 #include <cassert>
 #include <cstddef>
-#include <cstdint>
 #include <map>
 #include <memory>
 #include <string>
@@ -69,7 +66,6 @@ class SourceManager;
 
 /// \brief Public enums and private classes that are part of the
 /// SourceManager implementation.
-///
 namespace SrcMgr {
 
   /// \brief Indicates whether a file or directory holds normal user code,
@@ -100,6 +96,7 @@ namespace SrcMgr {
     enum CCFlags {
       /// \brief Whether the buffer is invalid.
       InvalidFlag = 0x01,
+
       /// \brief Whether the buffer should not be freed on destruction.
       DoNotFreeFlag = 0x02
     };
@@ -130,12 +127,12 @@ namespace SrcMgr {
     ///
     /// This is lazily computed.  This is owned by the SourceManager
     /// BumpPointerAllocator object.
-    unsigned *SourceLineCache;
+    unsigned *SourceLineCache = nullptr;
 
     /// \brief The number of lines in this ContentCache.
     ///
     /// This is only valid if SourceLineCache is non-null.
-    unsigned NumLines;
+    unsigned NumLines = 0;
 
     /// \brief Indicates whether the buffer itself was provided to override
     /// the actual file contents.
@@ -157,15 +154,14 @@ namespace SrcMgr {
 
     ContentCache(const FileEntry *Ent, const FileEntry *contentEnt)
       : Buffer(nullptr, false), OrigEntry(Ent), ContentsEntry(contentEnt),
-        SourceLineCache(nullptr), NumLines(0), BufferOverridden(false),
-        IsSystemFile(false), IsTransient(false) {}
+        BufferOverridden(false), IsSystemFile(false), IsTransient(false) {}
     
     /// The copy ctor does not allow copies where source object has either
     /// a non-NULL Buffer or SourceLineCache.  Ownership of allocated memory
     /// is not transferred, so this is a logical error.
     ContentCache(const ContentCache &RHS)
-      : Buffer(nullptr, false), SourceLineCache(nullptr),
-        BufferOverridden(false), IsSystemFile(false), IsTransient(false) {
+      : Buffer(nullptr, false), BufferOverridden(false), IsSystemFile(false),
+        IsTransient(false) {
       OrigEntry = RHS.OrigEntry;
       ContentsEntry = RHS.ContentsEntry;
 
@@ -212,12 +208,6 @@ namespace SrcMgr {
     /// this content cache.  This is used for performance analysis.
     llvm::MemoryBuffer::BufferKind getMemoryBufferKind() const;
 
-    void setBuffer(std::unique_ptr<llvm::MemoryBuffer> B) {
-      assert(!Buffer.getPointer() && "MemoryBuffer already set.");
-      Buffer.setPointer(B.release());
-      Buffer.setInt(0);
-    }
-
     /// \brief Get the underlying buffer, returning NULL if the buffer is not
     /// yet available.
     llvm::MemoryBuffer *getRawBuffer() const { return Buffer.getPointer(); }
@@ -252,6 +242,10 @@ namespace SrcMgr {
   /// FileInfos contain a "ContentCache *", with the contents of the file.
   ///
   class FileInfo {
+    friend class clang::SourceManager;
+    friend class clang::ASTWriter;
+    friend class clang::ASTReader;
+
     /// \brief The location of the \#include that brought in this file.
     ///
     /// This is an invalid SLOC for the main file (top of the \#include chain).
@@ -270,10 +264,6 @@ namespace SrcMgr {
     llvm::PointerIntPair<const ContentCache*, 3, CharacteristicKind>
         ContentAndKind;
 
-    friend class clang::SourceManager;
-    friend class clang::ASTWriter;
-    friend class clang::ASTReader;
-
   public:
     /// \brief Return a FileInfo object.
     static FileInfo get(SourceLocation IL, const ContentCache *Con,
@@ -454,7 +444,7 @@ namespace SrcMgr {
     }
   };
 
-}  // end SrcMgr namespace.
+} // namespace SrcMgr
 
 /// \brief External source of source location entries.
 class ExternalSLocEntrySource {
@@ -552,7 +542,7 @@ public:
 /// \brief The stack used when building modules on demand, which is used
 /// to provide a link between the source managers of the different compiler
 /// instances.
-typedef ArrayRef<std::pair<std::string, FullSourceLoc>> ModuleBuildStack;
+using ModuleBuildStack = ArrayRef<std::pair<std::string, FullSourceLoc>>;
 
 /// \brief This class handles loading and caching of source files into memory.
 ///
@@ -584,7 +574,7 @@ class SourceManager : public RefCountedBase<SourceManager> {
 
   /// \brief True if the ContentCache for files that are overridden by other
   /// files, should report the original file name. Defaults to true.
-  bool OverridenFilesKeepOriginalName;
+  bool OverridenFilesKeepOriginalName = true;
 
   /// \brief True if non-system source files should be treated as volatile
   /// (likely to change while trying to use them). Defaults to false.
@@ -593,12 +583,13 @@ class SourceManager : public RefCountedBase<SourceManager> {
   /// \brief True if all files read during this compilation should be treated
   /// as transient (may not be present in later compilations using a module
   /// file created from this compilation). Defaults to false.
-  bool FilesAreTransient;
+  bool FilesAreTransient = false;
 
   struct OverriddenFilesInfoTy {
     /// \brief Files that have been overridden with the contents from another
     /// file.
     llvm::DenseMap<const FileEntry *, const FileEntry *> OverriddenFiles;
+
     /// \brief Files that were overridden with a memory buffer.
     llvm::DenseSet<const FileEntry *> OverriddenFilesWithBuffer;
   };
@@ -653,7 +644,7 @@ class SourceManager : public RefCountedBase<SourceManager> {
   llvm::BitVector SLocEntryLoaded;
 
   /// \brief An external source for source location entries.
-  ExternalSLocEntrySource *ExternalSLocEntries;
+  ExternalSLocEntrySource *ExternalSLocEntries = nullptr;
 
   /// \brief A one-entry cache to speed up getFileID.
   ///
@@ -664,7 +655,7 @@ class SourceManager : public RefCountedBase<SourceManager> {
   /// \brief Holds information for \#line directives.
   ///
   /// This is referenced by indices from SLocEntryTable.
-  LineTableInfo *LineTable;
+  LineTableInfo *LineTable = nullptr;
 
   /// \brief These ivars serve as a cache used in the getLineNumber
   /// method which is used to speedup getLineNumber calls to nearby locations.
@@ -680,7 +671,8 @@ class SourceManager : public RefCountedBase<SourceManager> {
   FileID PreambleFileID;
 
   // Statistics for -print-stats.
-  mutable unsigned NumLinearScans, NumBinaryProbes;
+  mutable unsigned NumLinearScans = 0;
+  mutable unsigned NumBinaryProbes = 0;
 
   /// \brief Associates a FileID with its "included/expanded in" decomposed
   /// location.
@@ -690,12 +682,12 @@ class SourceManager : public RefCountedBase<SourceManager> {
   mutable llvm::DenseMap<FileID, std::pair<FileID, unsigned>> IncludedLocMap;
 
   /// The key value into the IsBeforeInTUCache table.
-  typedef std::pair<FileID, FileID> IsBeforeInTUCacheKey;
+  using IsBeforeInTUCacheKey = std::pair<FileID, FileID>;
 
   /// The IsBeforeInTranslationUnitCache is a mapping from FileID pairs
   /// to cache results.
-  typedef llvm::DenseMap<IsBeforeInTUCacheKey, InBeforeInTUCacheEntry>
-          InBeforeInTUCache;
+  using InBeforeInTUCache =
+      llvm::DenseMap<IsBeforeInTUCacheKey, InBeforeInTUCacheEntry>;
 
   /// Cache results for the isBeforeInTranslationUnit method.
   mutable InBeforeInTUCache IBTUCache;
@@ -712,7 +704,7 @@ class SourceManager : public RefCountedBase<SourceManager> {
 
   /// \brief Lazily computed map of macro argument chunks to their expanded
   /// source location.
-  typedef std::map<unsigned, SourceLocation> MacroArgsMap;
+  using MacroArgsMap = std::map<unsigned, SourceLocation>;
 
   mutable llvm::DenseMap<FileID, std::unique_ptr<MacroArgsMap>>
       MacroArgsCacheMap;
@@ -816,7 +808,22 @@ public:
                       SrcMgr::CharacteristicKind FileCharacter = SrcMgr::C_User,
                       int LoadedID = 0, unsigned LoadedOffset = 0,
                       SourceLocation IncludeLoc = SourceLocation()) {
-    return createFileID(createMemBufferContentCache(std::move(Buffer)),
+    return createFileID(
+        createMemBufferContentCache(Buffer.release(), /*DoNotFree*/ false),
+        IncludeLoc, FileCharacter, LoadedID, LoadedOffset);
+  }
+
+  enum UnownedTag { Unowned };
+
+  /// \brief Create a new FileID that represents the specified memory buffer.
+  ///
+  /// This does no caching of the buffer and takes ownership of the
+  /// MemoryBuffer, so only pass a MemoryBuffer to this once.
+  FileID createFileID(UnownedTag, llvm::MemoryBuffer *Buffer,
+                      SrcMgr::CharacteristicKind FileCharacter = SrcMgr::C_User,
+                      int LoadedID = 0, unsigned LoadedOffset = 0,
+                      SourceLocation IncludeLoc = SourceLocation()) {
+    return createFileID(createMemBufferContentCache(Buffer, /*DoNotFree*/true),
                         IncludeLoc, FileCharacter, LoadedID, LoadedOffset);
   }
 
@@ -1408,7 +1415,6 @@ public:
   //===--------------------------------------------------------------------===//
 
   /// \brief Return the uniqued ID for the specified filename.
-  ///
   unsigned getLineTableFilenameID(StringRef Str);
 
   /// \brief Add a line note to the line table for the FileID and offset
@@ -1520,9 +1526,18 @@ public:
     return LHSLoaded;
   }
 
+  /// Return true if the Point is within Start and End.
+  bool isPointWithin(SourceLocation Location, SourceLocation Start,
+                     SourceLocation End) const {
+    return Location == Start || Location == End ||
+           (isBeforeInTranslationUnit(Start, Location) &&
+            isBeforeInTranslationUnit(Location, End));
+  }
+
   // Iterators over FileInfos.
-  typedef llvm::DenseMap<const FileEntry*, SrcMgr::ContentCache*>
-      ::const_iterator fileinfo_iterator;
+  using fileinfo_iterator =
+      llvm::DenseMap<const FileEntry*, SrcMgr::ContentCache*>::const_iterator;
+
   fileinfo_iterator fileinfo_begin() const { return FileInfos.begin(); }
   fileinfo_iterator fileinfo_end() const { return FileInfos.end(); }
   bool hasFileInfo(const FileEntry *File) const {
@@ -1530,7 +1545,6 @@ public:
   }
 
   /// \brief Print statistics to stderr.
-  ///
   void PrintStats() const;
 
   void dump() const;
@@ -1621,6 +1635,9 @@ public:
   }
 
 private:
+  friend class ASTReader;
+  friend class ASTWriter;
+
   llvm::MemoryBuffer *getFakeBufferForRecovery() const;
   const SrcMgr::ContentCache *getFakeContentCacheForRecovery() const;
 
@@ -1691,7 +1708,7 @@ private:
 
   /// \brief Create a new ContentCache for the specified  memory buffer.
   const SrcMgr::ContentCache *
-  createMemBufferContentCache(std::unique_ptr<llvm::MemoryBuffer> Buf);
+  createMemBufferContentCache(llvm::MemoryBuffer *Buf, bool DoNotFree);
 
   FileID getFileIDSlow(unsigned SLocOffset) const;
   FileID getFileIDLocal(unsigned SLocOffset) const;
@@ -1712,8 +1729,6 @@ private:
                                          SourceLocation SpellLoc,
                                          SourceLocation ExpansionLoc,
                                          unsigned ExpansionLength) const;
-  friend class ASTReader;
-  friend class ASTWriter;
 };
 
 /// \brief Comparison function object.
@@ -1726,7 +1741,7 @@ class BeforeThanCompare<SourceLocation> {
   SourceManager &SM;
 
 public:
-  explicit BeforeThanCompare(SourceManager &SM) : SM(SM) { }
+  explicit BeforeThanCompare(SourceManager &SM) : SM(SM) {}
 
   bool operator()(SourceLocation LHS, SourceLocation RHS) const {
     return SM.isBeforeInTranslationUnit(LHS, RHS);
@@ -1739,13 +1754,13 @@ class BeforeThanCompare<SourceRange> {
   SourceManager &SM;
 
 public:
-  explicit BeforeThanCompare(SourceManager &SM) : SM(SM) { }
+  explicit BeforeThanCompare(SourceManager &SM) : SM(SM) {}
 
   bool operator()(SourceRange LHS, SourceRange RHS) const {
     return SM.isBeforeInTranslationUnit(LHS.getBegin(), RHS.getBegin());
   }
 };
 
-} // end namespace clang
+} // namespace clang
 
 #endif // LLVM_CLANG_BASIC_SOURCEMANAGER_H
diff --git a/include/clang/Basic/SourceManagerInternals.h b/include/clang/Basic/SourceManagerInternals.h
index 9403dea8889c2..edd910e704128 100644
--- a/include/clang/Basic/SourceManagerInternals.h
+++ b/include/clang/Basic/SourceManagerInternals.h
@@ -1,4 +1,4 @@
-//===--- SourceManagerInternals.h - SourceManager Internals -----*- C++ -*-===//
+//===- SourceManagerInternals.h - SourceManager Internals -------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -6,10 +6,10 @@
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
-///
+//
 /// \file
 /// \brief Defines implementation details of the clang::SourceManager class.
-///
+//
 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_CLANG_BASIC_SOURCEMANAGERINTERNALS_H
@@ -18,7 +18,11 @@
 #include "clang/Basic/SourceLocation.h"
 #include "clang/Basic/SourceManager.h"
 #include "llvm/ADT/StringMap.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/Support/Allocator.h"
+#include <cassert>
 #include <map>
+#include <vector>
 
 namespace clang {
 
@@ -86,7 +90,8 @@ class LineTableInfo {
 
   /// \brief Map from FileIDs to a list of line entries (sorted by the offset
   /// at which they occur in the file).
-  std::map<FileID, std::vector<LineEntry> > LineEntries;
+  std::map<FileID, std::vector<LineEntry>> LineEntries;
+
 public:
   void clear() {
     FilenameIDs.clear();
@@ -95,10 +100,12 @@ public:
   }
 
   unsigned getLineTableFilenameID(StringRef Str);
+
   StringRef getFilename(unsigned ID) const {
     assert(ID < FilenamesByID.size() && "Invalid FilenameID");
     return FilenamesByID[ID]->getKey();
   }
+
   unsigned getNumFilenames() const { return FilenamesByID.size(); }
 
   void AddLineNote(FileID FID, unsigned Offset,
@@ -112,7 +119,8 @@ public:
   const LineEntry *FindNearestLineEntry(FileID FID, unsigned Offset);
 
   // Low-level access
-  typedef std::map<FileID, std::vector<LineEntry> >::iterator iterator;
+  using iterator = std::map<FileID, std::vector<LineEntry>>::iterator;
+
   iterator begin() { return LineEntries.begin(); }
   iterator end() { return LineEntries.end(); }
 
@@ -121,6 +129,6 @@ public:
   void AddEntry(FileID FID, const std::vector<LineEntry> &Entries);
 };
 
-} // end namespace clang
+} // namespace clang
 
-#endif
+#endif // LLVM_CLANG_BASIC_SOURCEMANAGERINTERNALS_H
diff --git a/include/clang/Basic/Specifiers.h b/include/clang/Basic/Specifiers.h
index 50fb936e01d1f..377534baab06b 100644
--- a/include/clang/Basic/Specifiers.h
+++ b/include/clang/Basic/Specifiers.h
@@ -52,6 +52,7 @@ namespace clang {
     TST_int,
     TST_int128,
     TST_half,         // OpenCL half, ARM NEON __fp16
+    TST_Float16,      // C11 extension ISO/IEC TS 18661-3
     TST_float,
     TST_double,
     TST_float128,
diff --git a/include/clang/Basic/SyncScope.h b/include/clang/Basic/SyncScope.h
new file mode 100644
index 0000000000000..09ac0052185af
--- /dev/null
+++ b/include/clang/Basic/SyncScope.h
@@ -0,0 +1,154 @@
+//===--- SyncScope.h - Atomic synchronization scopes ------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// \brief Provides definitions for the atomic synchronization scopes.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_BASIC_SYNCSCOPE_H
+#define LLVM_CLANG_BASIC_SYNCSCOPE_H
+
+#include "clang/Basic/LangOptions.h"
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/StringRef.h"
+#include <memory>
+
+namespace clang {
+
+/// \brief Defines synch scope values used internally by clang.
+///
+/// The enum values start from 0 and are contiguous. They are mainly used for
+/// enumerating all supported synch scope values and mapping them to LLVM
+/// synch scopes. Their numerical values may be different from the corresponding
+/// synch scope enums used in source languages.
+///
+/// In atomic builtin and expressions, language-specific synch scope enums are
+/// used. Currently only OpenCL memory scope enums are supported and assumed
+/// to be used by all languages. However, in the future, other languages may
+/// define their own set of synch scope enums. The language-specific synch scope
+/// values are represented by class AtomicScopeModel and its derived classes.
+///
+/// To add a new enum value:
+///   Add the enum value to enum class SyncScope.
+///   Update enum value Last if necessary.
+///   Update getAsString.
+///
+enum class SyncScope {
+  OpenCLWorkGroup,
+  OpenCLDevice,
+  OpenCLAllSVMDevices,
+  OpenCLSubGroup,
+  Last = OpenCLSubGroup
+};
+
+inline llvm::StringRef getAsString(SyncScope S) {
+  switch (S) {
+  case SyncScope::OpenCLWorkGroup:
+    return "opencl_workgroup";
+  case SyncScope::OpenCLDevice:
+    return "opencl_device";
+  case SyncScope::OpenCLAllSVMDevices:
+    return "opencl_allsvmdevices";
+  case SyncScope::OpenCLSubGroup:
+    return "opencl_subgroup";
+  }
+  llvm_unreachable("Invalid synch scope");
+}
+
+/// \brief Defines the kind of atomic scope models.
+enum class AtomicScopeModelKind { None, OpenCL };
+
+/// \brief Defines the interface for synch scope model.
+class AtomicScopeModel {
+public:
+  virtual ~AtomicScopeModel() {}
+  /// \brief Maps language specific synch scope values to internal
+  /// SyncScope enum.
+  virtual SyncScope map(unsigned S) const = 0;
+
+  /// \brief Check if the compile-time constant synch scope value
+  /// is valid.
+  virtual bool isValid(unsigned S) const = 0;
+
+  /// \brief Get all possible synch scope values that might be
+  /// encountered at runtime for the current language.
+  virtual ArrayRef<unsigned> getRuntimeValues() const = 0;
+
+  /// \brief If atomic builtin function is called with invalid
+  /// synch scope value at runtime, it will fall back to a valid
+  /// synch scope value returned by this function.
+  virtual unsigned getFallBackValue() const = 0;
+
+  /// \brief Create an atomic scope model by AtomicScopeModelKind.
+  /// \return an empty std::unique_ptr for AtomicScopeModelKind::None.
+  static std::unique_ptr<AtomicScopeModel> create(AtomicScopeModelKind K);
+};
+
+/// \brief Defines the synch scope model for OpenCL.
+class AtomicScopeOpenCLModel : public AtomicScopeModel {
+public:
+  /// The enum values match the pre-defined macros
+  /// __OPENCL_MEMORY_SCOPE_*, which are used to define memory_scope_*
+  /// enums in opencl-c.h.
+  enum ID {
+    WorkGroup = 1,
+    Device = 2,
+    AllSVMDevices = 3,
+    SubGroup = 4,
+    Last = SubGroup
+  };
+
+  AtomicScopeOpenCLModel() {}
+
+  SyncScope map(unsigned S) const override {
+    switch (static_cast<ID>(S)) {
+    case WorkGroup:
+      return SyncScope::OpenCLWorkGroup;
+    case Device:
+      return SyncScope::OpenCLDevice;
+    case AllSVMDevices:
+      return SyncScope::OpenCLAllSVMDevices;
+    case SubGroup:
+      return SyncScope::OpenCLSubGroup;
+    }
+    llvm_unreachable("Invalid language synch scope value");
+  }
+
+  bool isValid(unsigned S) const override {
+    return S >= static_cast<unsigned>(WorkGroup) &&
+           S <= static_cast<unsigned>(Last);
+  }
+
+  ArrayRef<unsigned> getRuntimeValues() const override {
+    static_assert(Last == SubGroup, "Does not include all synch scopes");
+    static const unsigned Scopes[] = {
+        static_cast<unsigned>(WorkGroup), static_cast<unsigned>(Device),
+        static_cast<unsigned>(AllSVMDevices), static_cast<unsigned>(SubGroup)};
+    return llvm::makeArrayRef(Scopes);
+  }
+
+  unsigned getFallBackValue() const override {
+    return static_cast<unsigned>(AllSVMDevices);
+  }
+};
+
+inline std::unique_ptr<AtomicScopeModel>
+AtomicScopeModel::create(AtomicScopeModelKind K) {
+  switch (K) {
+  case AtomicScopeModelKind::None:
+    return std::unique_ptr<AtomicScopeModel>{};
+  case AtomicScopeModelKind::OpenCL:
+    return llvm::make_unique<AtomicScopeOpenCLModel>();
+  }
+  llvm_unreachable("Invalid atomic scope model kind");
+}
+}
+
+#endif
diff --git a/include/clang/Basic/TargetInfo.h b/include/clang/Basic/TargetInfo.h
index d1a9ea85dbe96..6ba58779114f5 100644
--- a/include/clang/Basic/TargetInfo.h
+++ b/include/clang/Basic/TargetInfo.h
@@ -59,6 +59,7 @@ protected:
   // values are specified by the TargetInfo constructor.
   bool BigEndian;
   bool TLSSupported;
+  bool VLASupported;
   bool NoAsmVariants;  // True if {|} are normal characters.
   bool HasFloat128;
   unsigned char PointerWidth, PointerAlign;
@@ -85,7 +86,7 @@ protected:
     *LongDoubleFormat, *Float128Format;
   unsigned char RegParmMax, SSERegParmMax;
   TargetCXXABI TheCXXABI;
-  const LangAS::Map *AddrSpaceMap;
+  const LangASMap *AddrSpaceMap;
 
   mutable StringRef PlatformName;
   mutable VersionTuple PlatformMinVersion;
@@ -247,6 +248,9 @@ public:
   IntType getPtrDiffType(unsigned AddrSpace) const {
     return AddrSpace == 0 ? PtrDiffType : getPtrDiffTypeV(AddrSpace);
   }
+  IntType getUnsignedPtrDiffType(unsigned AddrSpace) const {
+    return getCorrespondingUnsignedType(getPtrDiffType(AddrSpace));
+  }
   IntType getIntPtrType() const { return IntPtrType; }
   IntType getUIntPtrType() const {
     return getCorrespondingUnsignedType(IntPtrType);
@@ -318,9 +322,7 @@ public:
 
   /// \brief Get integer value for null pointer.
   /// \param AddrSpace address space of pointee in source language.
-  virtual uint64_t getNullPointerValue(unsigned AddrSpace) const {
-    return 0;
-  }
+  virtual uint64_t getNullPointerValue(LangAS AddrSpace) const { return 0; }
 
   /// \brief Return the size of '_Bool' and C++ 'bool' for this target, in bits.
   unsigned getBoolWidth() const { return BoolWidth; }
@@ -447,6 +449,9 @@ public:
   /// \brief Return the maximum width lock-free atomic operation which can be
   /// inlined given the supported features of the given target.
   unsigned getMaxAtomicInlineWidth() const { return MaxAtomicInlineWidth; }
+  /// \brief Set the maximum inline or promote width lock-free atomic operation
+  /// for the given target.
+  virtual void setMaxAtomicWidth() {}
   /// \brief Returns true if the given target supports lock-free atomic
   /// operations at the specified width and alignment.
   virtual bool hasBuiltinAtomic(uint64_t AtomicSizeInBits,
@@ -464,21 +469,6 @@ public:
   /// types for the given target.
   unsigned getSimdDefaultAlign() const { return SimdDefaultAlign; }
 
-  /// Return the alignment (in bits) of the thrown exception object. This is
-  /// only meaningful for targets that allocate C++ exceptions in a system
-  /// runtime, such as those using the Itanium C++ ABI.
-  virtual unsigned getExnObjectAlignment() const {
-    // Itanium says that an _Unwind_Exception has to be "double-word"
-    // aligned (and thus the end of it is also so-aligned), meaning 16
-    // bytes.  Of course, that was written for the actual Itanium,
-    // which is a 64-bit platform.  Classically, the ABI doesn't really
-    // specify the alignment on other platforms, but in practice
-    // libUnwind declares the struct with __attribute__((aligned)), so
-    // we assume that alignment here.  (It's generally 16 bytes, but
-    // some targets overwrite it.)
-    return getDefaultAlignForAttributeAligned();
-  }
-
   /// \brief Return the size of intmax_t and uintmax_t for this target, in bits.
   unsigned getIntMaxTWidth() const {
     return getTypeWidth(IntMaxType);
@@ -569,6 +559,14 @@ public:
     return ComplexLongDoubleUsesFP2Ret;
   }
 
+  /// Check whether llvm intrinsics such as llvm.convert.to.fp16 should be used
+  /// to convert to and from __fp16.
+  /// FIXME: This function should be removed once all targets stop using the
+  /// conversion intrinsics.
+  virtual bool useFP16ConversionIntrinsics() const {
+    return true;
+  }
+
   /// \brief Specify if mangling based on address space map should be used or
   /// not for language specific address spaces
   bool useAddressSpaceMapMangling() const {
@@ -869,6 +867,11 @@ public:
     return false;
   }
 
+  /// brief Determine whether this TargetInfo supports the given CPU name.
+  virtual bool isValidCPUName(StringRef Name) const {
+    return true;
+  }
+
   /// \brief Use the specified ABI.
   ///
   /// \return False on error (invalid ABI name).
@@ -891,6 +894,11 @@ public:
     Features[Name] = Enabled;
   }
 
+  /// \brief Determine whether this TargetInfo supports the given feature.
+  virtual bool isValidFeatureName(StringRef Feature) const {
+    return true;
+  }
+
   /// \brief Perform initialization based on the user configured
   /// set of features (e.g., +sse4).
   ///
@@ -916,6 +924,10 @@ public:
   // argument.
   virtual bool validateCpuSupports(StringRef Name) const { return false; }
 
+  // \brief Validate the contents of the __builtin_cpu_is(const char*)
+  // argument.
+  virtual bool validateCpuIs(StringRef Name) const { return false; }
+
   // \brief Returns maximal number of args passed in registers.
   unsigned getRegParmMax() const {
     assert(RegParmMax < 7 && "RegParmMax value is larger than AST can handle");
@@ -935,6 +947,9 @@ public:
     return MaxTLSAlign;
   }
 
+  /// \brief Whether target supports variable-length arrays.
+  bool isVLASupported() const { return VLASupported; }
+
   /// \brief Whether the target supports SEH __try.
   bool isSEHTrySupported() const {
     return getTriple().isOSWindows() &&
@@ -965,15 +980,13 @@ public:
     return nullptr;
   }
 
-  const LangAS::Map &getAddressSpaceMap() const {
-    return *AddrSpaceMap;
-  }
+  const LangASMap &getAddressSpaceMap() const { return *AddrSpaceMap; }
 
   /// \brief Return an AST address space which can be used opportunistically
   /// for constant global memory. It must be possible to convert pointers into
   /// this address space to LangAS::Default. If no such address space exists,
   /// this may return None, and such optimizations will be disabled.
-  virtual llvm::Optional<unsigned> getConstantAddressSpace() const {
+  virtual llvm::Optional<LangAS> getConstantAddressSpace() const {
     return LangAS::Default;
   }
 
@@ -1051,10 +1064,19 @@ public:
       return getTargetOpts().SupportedOpenCLOptions;
   }
 
-  /// \brief Get OpenCL image type address space.
-  virtual LangAS::ID getOpenCLImageAddrSpace() const {
-    return LangAS::opencl_global;
-  }
+  enum OpenCLTypeKind {
+    OCLTK_Default,
+    OCLTK_ClkEvent,
+    OCLTK_Event,
+    OCLTK_Image,
+    OCLTK_Pipe,
+    OCLTK_Queue,
+    OCLTK_ReserveID,
+    OCLTK_Sampler,
+  };
+
+  /// \brief Get address space for OpenCL type.
+  virtual LangAS getOpenCLTypeAddrSpace(OpenCLTypeKind TK) const;
 
   /// \returns Target specific vtbl ptr address space.
   virtual unsigned getVtblPtrAddressSpace() const {
diff --git a/include/clang/Basic/TargetOptions.h b/include/clang/Basic/TargetOptions.h
index 9bb19c7b79df0..60becfb8ee76e 100644
--- a/include/clang/Basic/TargetOptions.h
+++ b/include/clang/Basic/TargetOptions.h
@@ -54,8 +54,6 @@ public:
   /// be a list of strings starting with by '+' or '-'.
   std::vector<std::string> Features;
 
-  std::vector<std::string> Reciprocals;
-
   /// Supported OpenCL extensions and optional core features.
   OpenCLOptions SupportedOpenCLOptions;
 
diff --git a/include/clang/Basic/TokenKinds.def b/include/clang/Basic/TokenKinds.def
index be67663a1015c..6ae8821a834d0 100644
--- a/include/clang/Basic/TokenKinds.def
+++ b/include/clang/Basic/TokenKinds.def
@@ -27,8 +27,11 @@
 #ifndef CXX11_KEYWORD
 #define CXX11_KEYWORD(X,Y) KEYWORD(X,KEYCXX11|(Y))
 #endif
+#ifndef CXX2A_KEYWORD
+#define CXX2A_KEYWORD(X,Y) KEYWORD(X,KEYCXX2A|(Y))
+#endif
 #ifndef CONCEPTS_KEYWORD
-#define CONCEPTS_KEYWORD(X) KEYWORD(X,KEYCONCEPTS)
+#define CONCEPTS_KEYWORD(X) CXX2A_KEYWORD(X,KEYCONCEPTS)
 #endif
 #ifndef MODULES_KEYWORD
 #define MODULES_KEYWORD(X) KEYWORD(X,KEYMODULES)
@@ -142,7 +145,7 @@ TOK(numeric_constant)    // 0x123
 TOK(char_constant)       // 'a'
 TOK(wide_char_constant)  // L'b'
 
-// C++1z Character Constants
+// C++17 Character Constants
 TOK(utf8_char_constant)  // u8'a'
 
 // C++11 Character Constants
@@ -191,6 +194,7 @@ PUNCTUATOR(less,                "<")
 PUNCTUATOR(lessless,            "<<")
 PUNCTUATOR(lessequal,           "<=")
 PUNCTUATOR(lesslessequal,       "<<=")
+PUNCTUATOR(spaceship,           "<=>")
 PUNCTUATOR(greater,             ">")
 PUNCTUATOR(greatergreater,      ">>")
 PUNCTUATOR(greaterequal,        ">=")
@@ -236,6 +240,7 @@ PUNCTUATOR(caretcaret,            "^^")
 //              implementation namespace
 //   KEYNOCXX - This is a keyword in every non-C++ dialect.
 //   KEYCXX11 - This is a C++ keyword introduced to C++ in C++11
+//   KEYCXX2A - This is a C++ keyword introduced to C++ in C++2a
 //   KEYCONCEPTS - This is a keyword if the C++ extensions for concepts
 //                 are enabled.
 //   KEYMODULES - This is a keyword if the C++ extensions for modules
@@ -362,7 +367,7 @@ CXX11_KEYWORD(nullptr               , 0)
 CXX11_KEYWORD(static_assert         , 0)
 CXX11_KEYWORD(thread_local          , 0)
 
-// C++ concepts TS keywords
+// C++2a / concepts TS keywords
 CONCEPTS_KEYWORD(concept)
 CONCEPTS_KEYWORD(requires)
 
@@ -375,6 +380,9 @@ KEYWORD(co_yield                    , KEYCOROUTINES)
 MODULES_KEYWORD(module)
 MODULES_KEYWORD(import)
 
+// C11 Extension
+KEYWORD(_Float16                    , KEYALL)
+
 // GNU Extensions (in impl-reserved namespace)
 KEYWORD(_Decimal32                  , KEYALL)
 KEYWORD(_Decimal64                  , KEYALL)
@@ -390,6 +398,7 @@ TYPE_TRAIT_2(__builtin_types_compatible_p, TypeCompatible, KEYNOCXX)
 KEYWORD(__builtin_va_arg            , KEYALL)
 KEYWORD(__extension__               , KEYALL)
 KEYWORD(__float128                  , KEYALL)
+ALIAS("_Float128", __float128       , KEYNOCXX)
 KEYWORD(__imag                      , KEYALL)
 KEYWORD(__int128                    , KEYALL)
 KEYWORD(__label__                   , KEYALL)
@@ -448,6 +457,8 @@ TYPE_TRAIT_1(__is_pod, IsPOD, KEYCXX)
 TYPE_TRAIT_1(__is_polymorphic, IsPolymorphic, KEYCXX)
 TYPE_TRAIT_1(__is_trivial, IsTrivial, KEYCXX)
 TYPE_TRAIT_1(__is_union, IsUnion, KEYCXX)
+TYPE_TRAIT_1(__has_unique_object_representations,
+             HasUniqueObjectRepresentations, KEYCXX)
 
 // Clang-only C++ Type Traits
 TYPE_TRAIT_N(__is_trivially_constructible, IsTriviallyConstructible, KEYCXX)
@@ -810,6 +821,7 @@ ANNOTATION(module_end)
 #undef TYPE_TRAIT_1
 #undef TYPE_TRAIT
 #undef CONCEPTS_KEYWORD
+#undef CXX2A_KEYWORD
 #undef CXX11_KEYWORD
 #undef KEYWORD
 #undef PUNCTUATOR
diff --git a/include/clang/Basic/TypeTraits.h b/include/clang/Basic/TypeTraits.h
index 6aadf795d82e5..8ecd63f9c3cbb 100644
--- a/include/clang/Basic/TypeTraits.h
+++ b/include/clang/Basic/TypeTraits.h
@@ -70,7 +70,8 @@ namespace clang {
     UTT_IsUnsigned,
     UTT_IsVoid,
     UTT_IsVolatile,
-    UTT_Last = UTT_IsVolatile,
+    UTT_HasUniqueObjectRepresentations,
+    UTT_Last = UTT_HasUniqueObjectRepresentations,
     BTT_IsBaseOf,
     BTT_IsConvertible,
     BTT_IsConvertibleTo,
diff --git a/include/clang/Basic/VirtualFileSystem.h b/include/clang/Basic/VirtualFileSystem.h
index e52b345e286c6..245452dd12b57 100644
--- a/include/clang/Basic/VirtualFileSystem.h
+++ b/include/clang/Basic/VirtualFileSystem.h
@@ -319,16 +319,30 @@ public:
   explicit InMemoryFileSystem(bool UseNormalizedPaths = true);
   ~InMemoryFileSystem() override;
 
-  /// Add a buffer to the VFS with a path. The VFS owns the buffer.
-  /// \return true if the file was successfully added, false if the file already
-  /// exists in the file system with different contents.
+  /// Add a file containing a buffer or a directory to the VFS with a
+  /// path. The VFS owns the buffer.  If present, User, Group, Type
+  /// and Perms apply to the newly-created file or directory.
+  /// \return true if the file or directory was successfully added,
+  /// false if the file or directory already exists in the file system with
+  /// different contents.
   bool addFile(const Twine &Path, time_t ModificationTime,
-               std::unique_ptr<llvm::MemoryBuffer> Buffer);
+               std::unique_ptr<llvm::MemoryBuffer> Buffer,
+               Optional<uint32_t> User = None, Optional<uint32_t> Group = None,
+               Optional<llvm::sys::fs::file_type> Type = None,
+               Optional<llvm::sys::fs::perms> Perms = None);
   /// Add a buffer to the VFS with a path. The VFS does not own the buffer.
-  /// \return true if the file was successfully added, false if the file already
-  /// exists in the file system with different contents.
+  /// If present, User, Group, Type and Perms apply to the newly-created file
+  /// or directory.
+  /// \return true if the file or directory was successfully added,
+  /// false if the file or directory already exists in the file system with
+  /// different contents.
   bool addFileNoOwn(const Twine &Path, time_t ModificationTime,
-                    llvm::MemoryBuffer *Buffer);
+                    llvm::MemoryBuffer *Buffer,
+                    Optional<uint32_t> User = None,
+                    Optional<uint32_t> Group = None,
+                    Optional<llvm::sys::fs::file_type> Type = None,
+                    Optional<llvm::sys::fs::perms> Perms = None);
+
   std::string toString() const;
   /// Return true if this file system normalizes . and .. in paths.
   bool useNormalizedPaths() const { return UseNormalizedPaths; }
diff --git a/include/clang/Basic/X86Target.def b/include/clang/Basic/X86Target.def
new file mode 100644
index 0000000000000..21550fe2dd55f
--- /dev/null
+++ b/include/clang/Basic/X86Target.def
@@ -0,0 +1,232 @@
+//===--- X86Target.def - X86 Feature/Processor Database ---------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines the X86-specific Features and Processors, as used by
+// the X86 Targets.
+//
+//===----------------------------------------------------------------------===//
+
+
+#ifndef PROC
+#define PROC(ENUM, STRING, IS64BIT)
+#endif
+
+#ifndef PROC_ALIAS
+#define PROC_ALIAS(ENUM, ALIAS)
+#endif
+
+#define PROC_64_BIT true
+#define PROC_32_BIT false
+
+/// \name i386
+/// i386-generation processors.
+//@{
+PROC(i386, "i386", PROC_32_BIT)
+//@}
+
+/// \name i486
+/// i486-generation processors.
+//@{
+PROC(i486, "i486", PROC_32_BIT)
+PROC(WinChipC6, "winchip-c6", PROC_32_BIT)
+PROC(WinChip2, "winchip2", PROC_32_BIT)
+PROC(C3, "c3", PROC_32_BIT)
+//@}
+
+/// \name i586
+/// i586-generation processors, P5 microarchitecture based.
+//@{
+PROC(i586, "i586", PROC_32_BIT)
+PROC(Pentium, "pentium", PROC_32_BIT)
+PROC(PentiumMMX, "pentium-mmx", PROC_32_BIT)
+//@}
+
+/// \name i686
+/// i686-generation processors, P6 / Pentium M microarchitecture based.
+//@{
+PROC(PentiumPro, "pentiumpro", PROC_32_BIT)
+PROC_ALIAS(PentiumPro, "i686")
+PROC(Pentium2, "pentium2", PROC_32_BIT)
+PROC(Pentium3, "pentium3", PROC_32_BIT)
+PROC_ALIAS(Pentium3, "pentium3m")
+PROC(PentiumM, "pentium-m", PROC_32_BIT)
+PROC(C3_2, "c3-2", PROC_32_BIT)
+
+/// This enumerator is a bit odd, as GCC no longer accepts -march=yonah.
+/// Clang however has some logic to support this.
+// FIXME: Warn, deprecate, and potentially remove this.
+PROC(Yonah, "yonah", PROC_32_BIT)
+//@}
+
+/// \name Netburst
+/// Netburst microarchitecture based processors.
+//@{
+PROC(Pentium4, "pentium4", PROC_32_BIT)
+PROC_ALIAS(Pentium4, "pentium4m")
+
+PROC(Prescott, "prescott", PROC_32_BIT)
+PROC(Nocona, "nocona", PROC_64_BIT)
+//@}
+
+/// \name Core
+/// Core microarchitecture based processors.
+//@{
+PROC(Core2, "core2", PROC_64_BIT)
+
+/// This enumerator, like Yonah, is a bit odd. It is another
+/// codename which GCC no longer accepts as an option to -march, but Clang
+/// has some logic for recognizing it.
+// FIXME: Warn, deprecate, and potentially remove this.
+PROC(Penryn, "penryn", PROC_64_BIT)
+//@}
+
+/// \name Atom
+/// Atom processors
+//@{
+PROC(Bonnell, "bonnell", PROC_64_BIT)
+PROC_ALIAS(Bonnell, "atom")
+
+PROC(Silvermont, "silvermont", PROC_64_BIT)
+PROC_ALIAS(Silvermont, "slm")
+
+PROC(Goldmont, "goldmont", PROC_64_BIT)
+//@}
+
+/// \name Nehalem
+/// Nehalem microarchitecture based processors.
+PROC(Nehalem, "nehalem", PROC_64_BIT)
+PROC_ALIAS(Nehalem, "corei7")
+
+/// \name Westmere
+/// Westmere microarchitecture based processors.
+PROC(Westmere, "westmere", PROC_64_BIT)
+
+/// \name Sandy Bridge
+/// Sandy Bridge microarchitecture based processors.
+PROC(SandyBridge, "sandybridge", PROC_64_BIT)
+PROC_ALIAS(SandyBridge, "corei7-avx")
+
+/// \name Ivy Bridge
+/// Ivy Bridge microarchitecture based processors.
+PROC(IvyBridge, "ivybridge", PROC_64_BIT)
+PROC_ALIAS(IvyBridge, "core-avx-i")
+
+/// \name Haswell
+/// Haswell microarchitecture based processors.
+PROC(Haswell, "haswell", PROC_64_BIT)
+PROC_ALIAS(Haswell, "core-avx2")
+
+/// \name Broadwell
+/// Broadwell microarchitecture based processors.
+PROC(Broadwell, "broadwell", PROC_64_BIT)
+
+/// \name Skylake Client
+/// Skylake client microarchitecture based processors.
+PROC(SkylakeClient, "skylake", PROC_64_BIT)
+
+/// \name Skylake Server
+/// Skylake server microarchitecture based processors.
+PROC(SkylakeServer, "skylake-avx512", PROC_64_BIT)
+PROC_ALIAS(SkylakeServer, "skx")
+
+/// \name Cannonlake Client
+/// Cannonlake client microarchitecture based processors.
+PROC(Cannonlake, "cannonlake", PROC_64_BIT)
+
+/// \name Icelake Client
+/// Icelake client microarchitecture based processors.
+PROC(Icelake, "icelake", PROC_64_BIT)
+
+/// \name Knights Landing
+/// Knights Landing processor.
+PROC(KNL, "knl", PROC_64_BIT)
+
+/// \name Knights Mill
+/// Knights Mill processor.
+PROC(KNM, "knm", PROC_64_BIT)
+
+/// \name Lakemont
+/// Lakemont microarchitecture based processors.
+PROC(Lakemont, "lakemont", PROC_32_BIT)
+
+/// \name K6
+/// K6 architecture processors.
+//@{
+PROC(K6, "k6", PROC_32_BIT)
+PROC(K6_2, "k6-2", PROC_32_BIT)
+PROC(K6_3, "k6-3", PROC_32_BIT)
+//@}
+
+/// \name K7
+/// K7 architecture processors.
+//@{
+PROC(Athlon, "athlon", PROC_32_BIT)
+PROC_ALIAS(Athlon, "athlon-tbird")
+
+PROC(AthlonXP, "athlon-xp", PROC_32_BIT)
+PROC_ALIAS(AthlonXP, "athlon-mp")
+PROC_ALIAS(AthlonXP, "athlon-4")
+//@}
+
+/// \name K8
+/// K8 architecture processors.
+//@{
+PROC(K8, "k8", PROC_64_BIT)
+PROC_ALIAS(K8, "athlon64")
+PROC_ALIAS(K8, "athlon-fx")
+PROC_ALIAS(K8, "opteron")
+
+PROC(K8SSE3, "k8-sse3", PROC_64_BIT)
+PROC_ALIAS(K8SSE3, "athlon64-sse3")
+PROC_ALIAS(K8SSE3, "opteron-sse3")
+
+PROC(AMDFAM10, "amdfam10", PROC_64_BIT)
+PROC_ALIAS(AMDFAM10, "barcelona")
+//@}
+
+/// \name Bobcat
+/// Bobcat architecture processors.
+//@{
+PROC(BTVER1, "btver1", PROC_64_BIT)
+PROC(BTVER2, "btver2", PROC_64_BIT)
+//@}
+
+/// \name Bulldozer
+/// Bulldozer architecture processors.
+//@{
+PROC(BDVER1, "bdver1", PROC_64_BIT)
+PROC(BDVER2, "bdver2", PROC_64_BIT)
+PROC(BDVER3, "bdver3", PROC_64_BIT)
+PROC(BDVER4, "bdver4", PROC_64_BIT)
+//@}
+
+/// \name zen
+/// Zen architecture processors.
+//@{
+PROC(ZNVER1, "znver1", PROC_64_BIT)
+//@}
+
+/// This specification is deprecated and will be removed in the future.
+/// Users should prefer K8.
+// FIXME: Warn on this when the CPU is set to it.
+//@{
+PROC(x86_64, "x86-64", PROC_64_BIT)
+//@}
+
+/// \name Geode
+/// Geode processors.
+//@{
+PROC(Geode, "geode", PROC_32_BIT)
+//@}
+
+
+#undef PROC_64_BIT
+#undef PROC_32_BIT
+#undef PROC
+#undef PROC_ALIAS