11 files changed, 64 insertions, 26 deletions

diff --git a/include/clang/Basic/Attr.td b/include/clang/Basic/Attr.td
index a885ede8df12..9da2cc376d54 100644
--- a/include/clang/Basic/Attr.td
+++ b/include/clang/Basic/Attr.td
@@ -149,6 +149,9 @@ class ExprArgument<string name, bit opt = 0> : Argument<name, opt>;
 class FunctionArgument<string name, bit opt = 0, bit fake = 0> : Argument<name,
                                                                           opt,
                                                                           fake>;
+class NamedArgument<string name, bit opt = 0, bit fake = 0> : Argument<name,
+                                                                          opt,
+                                                                          fake>;
 class TypeArgument<string name, bit opt = 0> : Argument<name, opt>;
 class UnsignedArgument<string name, bit opt = 0> : Argument<name, opt>;
 class VariadicUnsignedArgument<string name> : Argument<name, 1>;
@@ -1819,14 +1822,14 @@ def Unavailable : InheritableAttr {
 
 def DiagnoseIf : InheritableAttr {
   let Spellings = [GNU<"diagnose_if">];
-  let Subjects = SubjectList<[Function]>;
+  let Subjects = SubjectList<[Function, ObjCMethod, ObjCProperty]>;
   let Args = [ExprArgument<"Cond">, StringArgument<"Message">,
               EnumArgument<"DiagnosticType",
                            "DiagnosticType",
                            ["error", "warning"],
                            ["DT_Error", "DT_Warning"]>,
               BoolArgument<"ArgDependent", 0, /*fake*/ 1>,
-              FunctionArgument<"Parent", 0, /*fake*/ 1>];
+              NamedArgument<"Parent", 0, /*fake*/ 1>];
   let DuplicatesAllowedWhileMerging = 1;
   let LateParsed = 1;
   let AdditionalMembers = [{
diff --git a/include/clang/Basic/BuiltinsAMDGPU.def b/include/clang/Basic/BuiltinsAMDGPU.def
index a8ab657c379e..6542acafe48a 100644
--- a/include/clang/Basic/BuiltinsAMDGPU.def
+++ b/include/clang/Basic/BuiltinsAMDGPU.def
@@ -36,6 +36,7 @@ BUILTIN(__builtin_amdgcn_workitem_id_z, "Ui", "nc")
 // Instruction builtins.
 //===----------------------------------------------------------------------===//
 BUILTIN(__builtin_amdgcn_s_getreg, "UiIi", "n")
+BUILTIN(__builtin_amdgcn_s_getpc, "LUi", "n")
 BUILTIN(__builtin_amdgcn_s_waitcnt, "vIi", "n")
 BUILTIN(__builtin_amdgcn_s_sendmsg, "vIiUi", "n")
 BUILTIN(__builtin_amdgcn_s_sendmsghalt, "vIiUi", "n")
diff --git a/include/clang/Basic/BuiltinsPPC.def b/include/clang/Basic/BuiltinsPPC.def
index f7cddc03131b..119490314b26 100644
--- a/include/clang/Basic/BuiltinsPPC.def
+++ b/include/clang/Basic/BuiltinsPPC.def
@@ -420,6 +420,9 @@ BUILTIN(__builtin_vsx_xvtstdcsp, "V4UiV4fIi", "")
 BUILTIN(__builtin_vsx_insertword, "V16UcV4UiV16UcIi", "")
 BUILTIN(__builtin_vsx_extractuword, "V2ULLiV16UcIi", "")
 
+BUILTIN(__builtin_vsx_xxpermdi, "v.", "t")
+BUILTIN(__builtin_vsx_xxsldwi, "v.", "t")
+
 // HTM builtins
 BUILTIN(__builtin_tbegin, "UiUIi", "")
 BUILTIN(__builtin_tend, "UiUIi", "")
diff --git a/include/clang/Basic/BuiltinsX86.def b/include/clang/Basic/BuiltinsX86.def
index 68b868ce8e6e..a98c8f0a53db 100644
--- a/include/clang/Basic/BuiltinsX86.def
+++ b/include/clang/Basic/BuiltinsX86.def
@@ -1107,6 +1107,9 @@ 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_512, "V16iV16i", "", "avx512vpopcntdq")
+TARGET_BUILTIN(__builtin_ia32_vpopcntq_512, "V8LLiV8LLi", "", "avx512vpopcntdq")
+
 TARGET_BUILTIN(__builtin_ia32_vpermi2varhi128_mask, "V8sV8sV8sV8sUc", "", "avx512vl,avx512bw")
 TARGET_BUILTIN(__builtin_ia32_vpermi2varhi256_mask, "V16sV16sV16sV16sUs", "", "avx512vl,avx512bw")
 TARGET_BUILTIN(__builtin_ia32_vpermt2varhi128_mask, "V8sV8sV8sV8sUc", "", "avx512vl,avx512bw")
diff --git a/include/clang/Basic/DiagnosticOptions.def b/include/clang/Basic/DiagnosticOptions.def
index 0ab6724ed9ef..2467b24fd909 100644
--- a/include/clang/Basic/DiagnosticOptions.def
+++ b/include/clang/Basic/DiagnosticOptions.def
@@ -87,6 +87,8 @@ VALUE_DIAGOPT(TemplateBacktraceLimit, 32, DefaultTemplateBacktraceLimit)
 VALUE_DIAGOPT(ConstexprBacktraceLimit, 32, DefaultConstexprBacktraceLimit)
 /// Limit number of times to perform spell checking.
 VALUE_DIAGOPT(SpellCheckingLimit, 32, DefaultSpellCheckingLimit)
+/// Limit number of lines shown in a snippet.
+VALUE_DIAGOPT(SnippetLineLimit, 32, DefaultSnippetLineLimit)
 
 VALUE_DIAGOPT(TabStop, 32, DefaultTabStop) /// The distance between tab stops.
 /// Column limit for formatting message diagnostics, or 0 if unused.
diff --git a/include/clang/Basic/DiagnosticOptions.h b/include/clang/Basic/DiagnosticOptions.h
index c9b0c5def992..c195003de5c4 100644
--- a/include/clang/Basic/DiagnosticOptions.h
+++ b/include/clang/Basic/DiagnosticOptions.h
@@ -63,11 +63,15 @@ public:
   enum TextDiagnosticFormat { Clang, MSVC, Vi };
 
   // Default values.
-  enum { DefaultTabStop = 8, MaxTabStop = 100,
+  enum {
+    DefaultTabStop = 8,
+    MaxTabStop = 100,
     DefaultMacroBacktraceLimit = 6,
     DefaultTemplateBacktraceLimit = 10,
     DefaultConstexprBacktraceLimit = 10,
-    DefaultSpellCheckingLimit = 50 };
+    DefaultSpellCheckingLimit = 50,
+    DefaultSnippetLineLimit = 1,
+  };
 
   // Define simple diagnostic options (with no accessors).
 #define DIAGOPT(Name, Bits, Default) unsigned Name : Bits;
diff --git a/include/clang/Basic/DiagnosticSemaKinds.td b/include/clang/Basic/DiagnosticSemaKinds.td
index 463d057d8fd0..4934bcfa3890 100644
--- a/include/clang/Basic/DiagnosticSemaKinds.td
+++ b/include/clang/Basic/DiagnosticSemaKinds.td
@@ -537,10 +537,10 @@ def err_maybe_falloff_nonvoid_block : Error<
 def err_falloff_nonvoid_block : Error<
   "control reaches end of non-void block">;
 def warn_maybe_falloff_nonvoid_coroutine : Warning<
-  "control may reach end of non-void coroutine">,
+  "control may reach end of coroutine; which is undefined behavior because the promise type %0 does not declare 'return_void()'">,
   InGroup<ReturnType>;
 def warn_falloff_nonvoid_coroutine : Warning<
-  "control reaches end of non-void coroutine">,
+  "control reaches end of coroutine; which is undefined behavior because the promise type %0 does not declare 'return_void()'">,
   InGroup<ReturnType>;
 def warn_suggest_noreturn_function : Warning<
   "%select{function|method}0 %1 could be declared with attribute 'noreturn'">,
@@ -1554,11 +1554,9 @@ def note_ivar_decl : Note<"instance variable is declared here">;
 def note_bitfield_decl : Note<"bit-field is declared here">;
 def note_implicit_param_decl : Note<"%0 is an implicit parameter">;
 def note_member_synthesized_at : Note<
-  "implicit %select{default constructor|copy constructor|move constructor|copy "
-  "assignment operator|move assignment operator|destructor}0 for %1 first "
-  "required here">;
-def note_inhctor_synthesized_at : Note<
-  "inherited constructor for %0 first required here">;
+  "in implicit %select{default constructor|copy constructor|move constructor|"
+  "copy assignment operator|move assignment operator|destructor}0 for %1 "
+  "first required here">;
 def err_missing_default_ctor : Error<
   "%select{constructor for %1 must explicitly initialize the|"
   "implicit default constructor for %1 must explicitly initialize the|"
@@ -2769,6 +2767,7 @@ def warn_attribute_wrong_decl_type : Warning<
   "|types and namespaces"
   "|Objective-C interfaces"
   "|methods and properties"
+  "|functions, methods, and properties"
   "|struct or union"
   "|struct, union or class"
   "|types"
@@ -2883,6 +2882,10 @@ def warn_partial_message : Warning<"%0 is partial: %1">,
 def warn_partial_fwdclass_message : Warning<
     "%0 may be partial because the receiver type is unknown">,
     InGroup<UnguardedAvailability>, DefaultIgnore;
+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">,
+  InGroup<DiagGroup<"unsupported-availability-guard">>;
 
 // Thread Safety Attributes
 def warn_invalid_capability_name : Warning<
@@ -6298,6 +6301,8 @@ def warn_ambiguous_suitable_delete_function_found : Warning<
   InGroup<DiagGroup<"ambiguous-delete">>;
 def note_member_declared_here : Note<
   "member %0 declared here">;
+def note_member_first_declared_here : Note<
+  "member %0 first declared here">;
 def err_decrement_bool : Error<"cannot decrement expression of type bool">;
 def warn_increment_bool : Warning<
   "incrementing expression of type bool is deprecated and "
@@ -8009,10 +8014,13 @@ def err_block_on_nonlocal : Error<
 def err_block_on_vm : Error<
   "__block attribute not allowed on declaration with a variably modified type">;
 
-def err_shufflevector_non_vector : Error<
-  "first two arguments to __builtin_shufflevector must be vectors">;
-def err_shufflevector_incompatible_vector : Error<
-  "first two arguments to __builtin_shufflevector must have the same type">;
+def err_vec_builtin_non_vector : Error<
+ "first two arguments to %0 must be vectors">;
+def err_vec_builtin_incompatible_vector : Error<
+  "first two arguments to %0 must have the same type">;
+def err_vsx_builtin_nonconstant_argument : Error<
+  "argument %0 to %1 must be a 2-bit unsigned literal (i.e. 0, 1, 2 or 3)">;
+
 def err_shufflevector_nonconstant_argument : Error<
   "index for __builtin_shufflevector must be a constant integer">;
 def err_shufflevector_argument_too_large : Error<
@@ -8899,8 +8907,6 @@ def note_equivalent_internal_linkage_decl : Note<
 
 def note_redefinition_modules_same_file : Note<
 	"'%0' included multiple times, additional include site in header from module '%1'">;
-def note_redefinition_modules_same_file_modulemap : Note<
-	"consider adding '%0' as part of '%1' definition">;
 def note_redefinition_include_same_file : Note<
 	"'%0' included multiple times, additional include site here">;
 }
@@ -8944,8 +8950,10 @@ def err_coroutine_promise_type_incomplete : Error<
 def err_coroutine_type_missing_specialization : Error<
   "this function cannot be a coroutine: missing definition of "
   "specialization %q0">;
-def err_coroutine_promise_return_ill_formed : Error<
-  "%0 declares both 'return_value' and 'return_void'">;
+def err_coroutine_promise_incompatible_return_functions : Error<
+  "the coroutine promise type %0 declares both 'return_value' and 'return_void'">;
+def err_coroutine_promise_requires_return_function : Error<
+  "the coroutine promise type %0 must declare either 'return_value' or 'return_void'">;
 def note_coroutine_promise_implicit_await_transform_required_here : Note<
   "call to 'await_transform' implicitly required by 'co_await' here">;
 def note_coroutine_promise_suspend_implicitly_required : Note<
@@ -8958,11 +8966,19 @@ def warn_coroutine_promise_unhandled_exception_required_with_exceptions : Warnin
   InGroup<CoroutineMissingUnhandledException>;
 def err_coroutine_promise_get_return_object_on_allocation_failure : Error<
   "%0: 'get_return_object_on_allocation_failure()' must be a static member function">;
+def err_seh_in_a_coroutine_with_cxx_exceptions : Error<
+  "cannot use SEH '__try' in a coroutine when C++ exceptions are enabled">;
 def err_coroutine_promise_new_requires_nothrow : Error<
   "%0 is required to have a non-throwing noexcept specification when the promise "
    "type declares 'get_return_object_on_allocation_failure()'">;
 def note_coroutine_promise_call_implicitly_required : Note<
   "call to %0 implicitly required by coroutine function here">;
+def err_await_suspend_invalid_return_type : Error<
+  "the return type of 'await_suspend' is required to be 'void' or 'bool' (have %0)"
+>;
+def note_await_ready_no_bool_conversion : Note<
+  "the return type of 'await_ready' is required to be contextually convertible to 'bool'"
+>;
 }
 
 let CategoryName = "Documentation Issue" in {
diff --git a/include/clang/Basic/SourceManager.h b/include/clang/Basic/SourceManager.h
index 6960ea690b91..eda802934006 100644
--- a/include/clang/Basic/SourceManager.h
+++ b/include/clang/Basic/SourceManager.h
@@ -1399,10 +1399,9 @@ public:
   /// specified by Loc.
   ///
   /// If FilenameID is -1, it is considered to be unspecified.
-  void AddLineNote(SourceLocation Loc, unsigned LineNo, int FilenameID);
   void AddLineNote(SourceLocation Loc, unsigned LineNo, int FilenameID,
                    bool IsFileEntry, bool IsFileExit,
-                   bool IsSystemHeader, bool IsExternCHeader);
+                   SrcMgr::CharacteristicKind FileKind);
 
   /// \brief Determine if the source manager has a line table.
   bool hasLineTable() const { return LineTable != nullptr; }
diff --git a/include/clang/Basic/SourceManagerInternals.h b/include/clang/Basic/SourceManagerInternals.h
index e65c97b0031d..9403dea8889c 100644
--- a/include/clang/Basic/SourceManagerInternals.h
+++ b/include/clang/Basic/SourceManagerInternals.h
@@ -102,8 +102,6 @@ public:
   unsigned getNumFilenames() const { return FilenamesByID.size(); }
 
   void AddLineNote(FileID FID, unsigned Offset,
-                   unsigned LineNo, int FilenameID);
-  void AddLineNote(FileID FID, unsigned Offset,
                    unsigned LineNo, int FilenameID,
                    unsigned EntryExit, SrcMgr::CharacteristicKind FileKind);
 
diff --git a/include/clang/Basic/TemplateKinds.h b/include/clang/Basic/TemplateKinds.h
index aed287b46228..ac99ad185f33 100644
--- a/include/clang/Basic/TemplateKinds.h
+++ b/include/clang/Basic/TemplateKinds.h
@@ -26,13 +26,21 @@ enum TemplateNameKind {
   TNK_Function_template,
   /// The name refers to a template whose specialization produces a
   /// type. The template itself could be a class template, template
-  /// template parameter, or C++0x template alias.
+  /// template parameter, or template alias.
   TNK_Type_template,
   /// The name refers to a variable template whose specialization produces a
   /// variable.
   TNK_Var_template,
-  /// The name refers to a dependent template name. Whether the
-  /// template name is assumed to refer to a type template or a
+  /// The name refers to a dependent template name: 
+  /// \code
+  /// template<typename MetaFun, typename T1, typename T2> struct apply2 {
+  ///   typedef typename MetaFun::template apply<T1, T2>::type type;
+  /// };
+  /// \endcode
+  ///
+  /// Here, "apply" is a dependent template name within the typename
+  /// specifier in the typedef. "apply" is a nested template, and 
+  /// whether the template name is assumed to refer to a type template or a
   /// function template depends on the context in which the template
   /// name occurs.
   TNK_Dependent_template_name
diff --git a/include/clang/Basic/XRayLists.h b/include/clang/Basic/XRayLists.h
index fe538289c3a6..8cfea70e280a 100644
--- a/include/clang/Basic/XRayLists.h
+++ b/include/clang/Basic/XRayLists.h
@@ -37,6 +37,7 @@ public:
     NONE,
     ALWAYS,
     NEVER,
+    ALWAYS_ARG1,
   };
 
   ImbueAttribute shouldImbueFunction(StringRef FunctionName) const;