summaryrefslogtreecommitdiff
path: root/contrib/llvm/tools/clang/lib/CodeGen/CodeGenFunction.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'contrib/llvm/tools/clang/lib/CodeGen/CodeGenFunction.cpp')
-rw-r--r--contrib/llvm/tools/clang/lib/CodeGen/CodeGenFunction.cpp382
1 files changed, 264 insertions, 118 deletions
diff --git a/contrib/llvm/tools/clang/lib/CodeGen/CodeGenFunction.cpp b/contrib/llvm/tools/clang/lib/CodeGen/CodeGenFunction.cpp
index 18f1623d242e..2c3cabe98510 100644
--- a/contrib/llvm/tools/clang/lib/CodeGen/CodeGenFunction.cpp
+++ b/contrib/llvm/tools/clang/lib/CodeGen/CodeGenFunction.cpp
@@ -12,19 +12,21 @@
//===----------------------------------------------------------------------===//
#include "CodeGenFunction.h"
-#include "CodeGenModule.h"
#include "CGCUDARuntime.h"
#include "CGCXXABI.h"
#include "CGDebugInfo.h"
-#include "clang/Basic/TargetInfo.h"
+#include "CodeGenModule.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/Decl.h"
#include "clang/AST/DeclCXX.h"
#include "clang/AST/StmtCXX.h"
+#include "clang/Basic/OpenCL.h"
+#include "clang/Basic/TargetInfo.h"
#include "clang/Frontend/CodeGenOptions.h"
-#include "llvm/Intrinsics.h"
-#include "llvm/MDBuilder.h"
-#include "llvm/DataLayout.h"
+#include "llvm/IR/DataLayout.h"
+#include "llvm/IR/Intrinsics.h"
+#include "llvm/IR/MDBuilder.h"
+#include "llvm/IR/Operator.h"
using namespace clang;
using namespace CodeGen;
@@ -32,20 +34,32 @@ CodeGenFunction::CodeGenFunction(CodeGenModule &cgm, bool suppressNewContext)
: CodeGenTypeCache(cgm), CGM(cgm),
Target(CGM.getContext().getTargetInfo()),
Builder(cgm.getModule().getContext()),
- SanitizePerformTypeCheck(CGM.getLangOpts().SanitizeNull |
- CGM.getLangOpts().SanitizeAlignment |
- CGM.getLangOpts().SanitizeObjectSize |
- CGM.getLangOpts().SanitizeVptr),
+ SanitizePerformTypeCheck(CGM.getSanOpts().Null |
+ CGM.getSanOpts().Alignment |
+ CGM.getSanOpts().ObjectSize |
+ CGM.getSanOpts().Vptr),
+ SanOpts(&CGM.getSanOpts()),
AutoreleaseResult(false), BlockInfo(0), BlockPointer(0),
LambdaThisCaptureField(0), NormalCleanupDest(0), NextCleanupDestIndex(1),
FirstBlockInfo(0), EHResumeBlock(0), ExceptionSlot(0), EHSelectorSlot(0),
- DebugInfo(0), DisableDebugInfo(false), DidCallStackSave(false),
+ DebugInfo(0), DisableDebugInfo(false), CalleeWithThisReturn(0),
+ DidCallStackSave(false),
IndirectBranch(0), SwitchInsn(0), CaseRangeBlock(0), UnreachableBlock(0),
- CXXABIThisDecl(0), CXXABIThisValue(0), CXXThisValue(0), CXXVTTDecl(0),
- CXXVTTValue(0), OutermostConditional(0), TerminateLandingPad(0),
+ CXXABIThisDecl(0), CXXABIThisValue(0), CXXThisValue(0),
+ CXXStructorImplicitParamDecl(0), CXXStructorImplicitParamValue(0),
+ OutermostConditional(0), CurLexicalScope(0), TerminateLandingPad(0),
TerminateHandler(0), TrapBB(0) {
if (!suppressNewContext)
CGM.getCXXABI().getMangleContext().startNewFunction();
+
+ llvm::FastMathFlags FMF;
+ if (CGM.getLangOpts().FastMath)
+ FMF.setUnsafeAlgebra();
+ if (CGM.getLangOpts().FiniteMathOnly) {
+ FMF.setNoNaNs();
+ FMF.setNoInfs();
+ }
+ Builder.SetFastMathFlags(FMF);
}
CodeGenFunction::~CodeGenFunction() {
@@ -65,45 +79,53 @@ llvm::Type *CodeGenFunction::ConvertType(QualType T) {
return CGM.getTypes().ConvertType(T);
}
-bool CodeGenFunction::hasAggregateLLVMType(QualType type) {
- switch (type.getCanonicalType()->getTypeClass()) {
+TypeEvaluationKind CodeGenFunction::getEvaluationKind(QualType type) {
+ type = type.getCanonicalType();
+ while (true) {
+ switch (type->getTypeClass()) {
#define TYPE(name, parent)
#define ABSTRACT_TYPE(name, parent)
#define NON_CANONICAL_TYPE(name, parent) case Type::name:
#define DEPENDENT_TYPE(name, parent) case Type::name:
#define NON_CANONICAL_UNLESS_DEPENDENT_TYPE(name, parent) case Type::name:
#include "clang/AST/TypeNodes.def"
- llvm_unreachable("non-canonical or dependent type in IR-generation");
-
- case Type::Builtin:
- case Type::Pointer:
- case Type::BlockPointer:
- case Type::LValueReference:
- case Type::RValueReference:
- case Type::MemberPointer:
- case Type::Vector:
- case Type::ExtVector:
- case Type::FunctionProto:
- case Type::FunctionNoProto:
- case Type::Enum:
- case Type::ObjCObjectPointer:
- return false;
+ llvm_unreachable("non-canonical or dependent type in IR-generation");
- // Complexes, arrays, records, and Objective-C objects.
- case Type::Complex:
- case Type::ConstantArray:
- case Type::IncompleteArray:
- case Type::VariableArray:
- case Type::Record:
- case Type::ObjCObject:
- case Type::ObjCInterface:
- return true;
+ // Various scalar types.
+ case Type::Builtin:
+ case Type::Pointer:
+ case Type::BlockPointer:
+ case Type::LValueReference:
+ case Type::RValueReference:
+ case Type::MemberPointer:
+ case Type::Vector:
+ case Type::ExtVector:
+ case Type::FunctionProto:
+ case Type::FunctionNoProto:
+ case Type::Enum:
+ case Type::ObjCObjectPointer:
+ return TEK_Scalar;
- // In IRGen, atomic types are just the underlying type
- case Type::Atomic:
- return hasAggregateLLVMType(type->getAs<AtomicType>()->getValueType());
+ // Complexes.
+ case Type::Complex:
+ return TEK_Complex;
+
+ // Arrays, records, and Objective-C objects.
+ case Type::ConstantArray:
+ case Type::IncompleteArray:
+ case Type::VariableArray:
+ case Type::Record:
+ case Type::ObjCObject:
+ case Type::ObjCInterface:
+ return TEK_Aggregate;
+
+ // We operate on atomic values according to their underlying type.
+ case Type::Atomic:
+ type = cast<AtomicType>(type)->getValueType();
+ continue;
+ }
+ llvm_unreachable("unknown type kind!");
}
- llvm_unreachable("unknown type kind!");
}
void CodeGenFunction::EmitReturnBlock() {
@@ -132,7 +154,10 @@ void CodeGenFunction::EmitReturnBlock() {
dyn_cast<llvm::BranchInst>(*ReturnBlock.getBlock()->use_begin());
if (BI && BI->isUnconditional() &&
BI->getSuccessor(0) == ReturnBlock.getBlock()) {
- // Reset insertion point, including debug location, and delete the branch.
+ // Reset insertion point, including debug location, and delete the
+ // branch. This is really subtle and only works because the next change
+ // in location will hit the caching in CGDebugInfo::EmitLocation and not
+ // override this.
Builder.SetCurrentDebugLocation(BI->getDebugLoc());
Builder.SetInsertPoint(BI->getParent());
BI->eraseFromParent();
@@ -159,6 +184,9 @@ void CodeGenFunction::FinishFunction(SourceLocation EndLoc) {
assert(BreakContinueStack.empty() &&
"mismatched push/pop in break/continue stack!");
+ if (CGDebugInfo *DI = getDebugInfo())
+ DI->EmitLocation(Builder, EndLoc);
+
// Pop any cleanups that might have been associated with the
// parameters. Do this in whatever block we're currently in; it's
// important to do this before we enter the return block or return
@@ -174,7 +202,6 @@ void CodeGenFunction::FinishFunction(SourceLocation EndLoc) {
// Emit debug descriptor for function end.
if (CGDebugInfo *DI = getDebugInfo()) {
- DI->setLocation(EndLoc);
DI->EmitFunctionEnd(Builder);
}
@@ -190,12 +217,12 @@ void CodeGenFunction::FinishFunction(SourceLocation EndLoc) {
EmitBlock(IndirectBranch->getParent());
Builder.ClearInsertionPoint();
}
-
+
// Remove the AllocaInsertPt instruction, which is just a convenience for us.
llvm::Instruction *Ptr = AllocaInsertPt;
AllocaInsertPt = 0;
Ptr->eraseFromParent();
-
+
// If someone took the address of a label but never did an indirect goto, we
// made a zero entry PHI node, which is illegal, zap it now.
if (IndirectBranch) {
@@ -241,9 +268,12 @@ void CodeGenFunction::EmitFunctionInstrumentation(const char *Fn) {
llvm::ConstantInt::get(Int32Ty, 0),
"callsite");
- Builder.CreateCall2(F,
- llvm::ConstantExpr::getBitCast(CurFn, PointerTy),
- CallSite);
+ llvm::Value *args[] = {
+ llvm::ConstantExpr::getBitCast(CurFn, PointerTy),
+ CallSite
+ };
+
+ EmitNounwindRuntimeCall(F, args);
}
void CodeGenFunction::EmitMCountInstrumentation() {
@@ -251,37 +281,114 @@ void CodeGenFunction::EmitMCountInstrumentation() {
llvm::Constant *MCountFn = CGM.CreateRuntimeFunction(FTy,
Target.getMCountName());
- Builder.CreateCall(MCountFn);
+ EmitNounwindRuntimeCall(MCountFn);
}
// OpenCL v1.2 s5.6.4.6 allows the compiler to store kernel argument
// information in the program executable. The argument information stored
// includes the argument name, its type, the address and access qualifiers used.
-// FIXME: Add type, address, and access qualifiers.
static void GenOpenCLArgMetadata(const FunctionDecl *FD, llvm::Function *Fn,
CodeGenModule &CGM,llvm::LLVMContext &Context,
- llvm::SmallVector <llvm::Value*, 5> &kernelMDArgs) {
-
- // Create MDNodes that represents the kernel arg metadata.
+ SmallVector <llvm::Value*, 5> &kernelMDArgs,
+ CGBuilderTy& Builder, ASTContext &ASTCtx) {
+ // Create MDNodes that represent the kernel arg metadata.
// Each MDNode is a list in the form of "key", N number of values which is
// the same number of values as their are kernel arguments.
-
+
+ // MDNode for the kernel argument address space qualifiers.
+ SmallVector<llvm::Value*, 8> addressQuals;
+ addressQuals.push_back(llvm::MDString::get(Context, "kernel_arg_addr_space"));
+
+ // MDNode for the kernel argument access qualifiers (images only).
+ SmallVector<llvm::Value*, 8> accessQuals;
+ accessQuals.push_back(llvm::MDString::get(Context, "kernel_arg_access_qual"));
+
+ // MDNode for the kernel argument type names.
+ SmallVector<llvm::Value*, 8> argTypeNames;
+ argTypeNames.push_back(llvm::MDString::get(Context, "kernel_arg_type"));
+
+ // MDNode for the kernel argument type qualifiers.
+ SmallVector<llvm::Value*, 8> argTypeQuals;
+ argTypeQuals.push_back(llvm::MDString::get(Context, "kernel_arg_type_qual"));
+
// MDNode for the kernel argument names.
SmallVector<llvm::Value*, 8> argNames;
argNames.push_back(llvm::MDString::get(Context, "kernel_arg_name"));
-
+
for (unsigned i = 0, e = FD->getNumParams(); i != e; ++i) {
const ParmVarDecl *parm = FD->getParamDecl(i);
+ QualType ty = parm->getType();
+ std::string typeQuals;
+
+ if (ty->isPointerType()) {
+ QualType pointeeTy = ty->getPointeeType();
+
+ // Get address qualifier.
+ addressQuals.push_back(Builder.getInt32(ASTCtx.getTargetAddressSpace(
+ pointeeTy.getAddressSpace())));
+
+ // Get argument type name.
+ std::string typeName = pointeeTy.getUnqualifiedType().getAsString() + "*";
+
+ // Turn "unsigned type" to "utype"
+ std::string::size_type pos = typeName.find("unsigned");
+ if (pos != std::string::npos)
+ typeName.erase(pos+1, 8);
+
+ argTypeNames.push_back(llvm::MDString::get(Context, typeName));
+
+ // Get argument type qualifiers:
+ if (ty.isRestrictQualified())
+ typeQuals = "restrict";
+ if (pointeeTy.isConstQualified() ||
+ (pointeeTy.getAddressSpace() == LangAS::opencl_constant))
+ typeQuals += typeQuals.empty() ? "const" : " const";
+ if (pointeeTy.isVolatileQualified())
+ typeQuals += typeQuals.empty() ? "volatile" : " volatile";
+ } else {
+ addressQuals.push_back(Builder.getInt32(0));
+
+ // Get argument type name.
+ std::string typeName = ty.getUnqualifiedType().getAsString();
+
+ // Turn "unsigned type" to "utype"
+ std::string::size_type pos = typeName.find("unsigned");
+ if (pos != std::string::npos)
+ typeName.erase(pos+1, 8);
+
+ argTypeNames.push_back(llvm::MDString::get(Context, typeName));
+
+ // Get argument type qualifiers:
+ if (ty.isConstQualified())
+ typeQuals = "const";
+ if (ty.isVolatileQualified())
+ typeQuals += typeQuals.empty() ? "volatile" : " volatile";
+ }
+ argTypeQuals.push_back(llvm::MDString::get(Context, typeQuals));
+
+ // Get image access qualifier:
+ if (ty->isImageType()) {
+ if (parm->hasAttr<OpenCLImageAccessAttr>() &&
+ parm->getAttr<OpenCLImageAccessAttr>()->getAccess() == CLIA_write_only)
+ accessQuals.push_back(llvm::MDString::get(Context, "write_only"));
+ else
+ accessQuals.push_back(llvm::MDString::get(Context, "read_only"));
+ } else
+ accessQuals.push_back(llvm::MDString::get(Context, "none"));
+
// Get argument name.
argNames.push_back(llvm::MDString::get(Context, parm->getName()));
-
}
- // Add MDNode to the list of all metadata.
+
+ kernelMDArgs.push_back(llvm::MDNode::get(Context, addressQuals));
+ kernelMDArgs.push_back(llvm::MDNode::get(Context, accessQuals));
+ kernelMDArgs.push_back(llvm::MDNode::get(Context, argTypeNames));
+ kernelMDArgs.push_back(llvm::MDNode::get(Context, argTypeQuals));
kernelMDArgs.push_back(llvm::MDNode::get(Context, argNames));
}
-void CodeGenFunction::EmitOpenCLKernelMetadata(const FunctionDecl *FD,
+void CodeGenFunction::EmitOpenCLKernelMetadata(const FunctionDecl *FD,
llvm::Function *Fn)
{
if (!FD->hasAttr<OpenCLKernelAttr>())
@@ -289,37 +396,49 @@ void CodeGenFunction::EmitOpenCLKernelMetadata(const FunctionDecl *FD,
llvm::LLVMContext &Context = getLLVMContext();
- llvm::SmallVector <llvm::Value*, 5> kernelMDArgs;
+ SmallVector <llvm::Value*, 5> kernelMDArgs;
kernelMDArgs.push_back(Fn);
if (CGM.getCodeGenOpts().EmitOpenCLArgMetadata)
- GenOpenCLArgMetadata(FD, Fn, CGM, Context, kernelMDArgs);
-
+ GenOpenCLArgMetadata(FD, Fn, CGM, Context, kernelMDArgs,
+ Builder, getContext());
+
+ if (FD->hasAttr<VecTypeHintAttr>()) {
+ VecTypeHintAttr *attr = FD->getAttr<VecTypeHintAttr>();
+ QualType hintQTy = attr->getTypeHint();
+ const ExtVectorType *hintEltQTy = hintQTy->getAs<ExtVectorType>();
+ bool isSignedInteger =
+ hintQTy->isSignedIntegerType() ||
+ (hintEltQTy && hintEltQTy->getElementType()->isSignedIntegerType());
+ llvm::Value *attrMDArgs[] = {
+ llvm::MDString::get(Context, "vec_type_hint"),
+ llvm::UndefValue::get(CGM.getTypes().ConvertType(attr->getTypeHint())),
+ llvm::ConstantInt::get(
+ llvm::IntegerType::get(Context, 32),
+ llvm::APInt(32, (uint64_t)(isSignedInteger ? 1 : 0)))
+ };
+ kernelMDArgs.push_back(llvm::MDNode::get(Context, attrMDArgs));
+ }
+
if (FD->hasAttr<WorkGroupSizeHintAttr>()) {
- llvm::SmallVector <llvm::Value*, 5> attrMDArgs;
- attrMDArgs.push_back(llvm::MDString::get(Context, "work_group_size_hint"));
WorkGroupSizeHintAttr *attr = FD->getAttr<WorkGroupSizeHintAttr>();
- llvm::Type *iTy = llvm::IntegerType::get(Context, 32);
- attrMDArgs.push_back(llvm::ConstantInt::get(iTy,
- llvm::APInt(32, (uint64_t)attr->getXDim())));
- attrMDArgs.push_back(llvm::ConstantInt::get(iTy,
- llvm::APInt(32, (uint64_t)attr->getYDim())));
- attrMDArgs.push_back(llvm::ConstantInt::get(iTy,
- llvm::APInt(32, (uint64_t)attr->getZDim())));
+ llvm::Value *attrMDArgs[] = {
+ llvm::MDString::get(Context, "work_group_size_hint"),
+ Builder.getInt32(attr->getXDim()),
+ Builder.getInt32(attr->getYDim()),
+ Builder.getInt32(attr->getZDim())
+ };
kernelMDArgs.push_back(llvm::MDNode::get(Context, attrMDArgs));
}
if (FD->hasAttr<ReqdWorkGroupSizeAttr>()) {
- llvm::SmallVector <llvm::Value*, 5> attrMDArgs;
- attrMDArgs.push_back(llvm::MDString::get(Context, "reqd_work_group_size"));
ReqdWorkGroupSizeAttr *attr = FD->getAttr<ReqdWorkGroupSizeAttr>();
- llvm::Type *iTy = llvm::IntegerType::get(Context, 32);
- attrMDArgs.push_back(llvm::ConstantInt::get(iTy,
- llvm::APInt(32, (uint64_t)attr->getXDim())));
- attrMDArgs.push_back(llvm::ConstantInt::get(iTy,
- llvm::APInt(32, (uint64_t)attr->getYDim())));
- attrMDArgs.push_back(llvm::ConstantInt::get(iTy,
- llvm::APInt(32, (uint64_t)attr->getZDim())));
+ llvm::Value *attrMDArgs[] = {
+ llvm::MDString::get(Context, "reqd_work_group_size"),
+ Builder.getInt32(attr->getXDim()),
+ Builder.getInt32(attr->getYDim()),
+ Builder.getInt32(attr->getZDim())
+ };
kernelMDArgs.push_back(llvm::MDNode::get(Context, attrMDArgs));
}
@@ -335,7 +454,7 @@ void CodeGenFunction::StartFunction(GlobalDecl GD, QualType RetTy,
const FunctionArgList &Args,
SourceLocation StartLoc) {
const Decl *D = GD.getDecl();
-
+
DidCallStackSave = false;
CurCodeDecl = CurFuncDecl = D;
FnRetTy = RetTy;
@@ -343,14 +462,19 @@ void CodeGenFunction::StartFunction(GlobalDecl GD, QualType RetTy,
CurFnInfo = &FnInfo;
assert(CurFn->isDeclaration() && "Function already has body?");
+ if (CGM.getSanitizerBlacklist().isIn(*Fn)) {
+ SanOpts = &SanitizerOptions::Disabled;
+ SanitizePerformTypeCheck = false;
+ }
+
// Pass inline keyword to optimizer if it appears explicitly on any
// declaration.
- if (!CGM.getCodeGenOpts().NoInline)
+ if (!CGM.getCodeGenOpts().NoInline)
if (const FunctionDecl *FD = dyn_cast_or_null<FunctionDecl>(D))
for (FunctionDecl::redecl_iterator RI = FD->redecls_begin(),
RE = FD->redecls_end(); RI != RE; ++RI)
if (RI->isInlineSpecified()) {
- Fn->addFnAttr(llvm::Attributes::InlineHint);
+ Fn->addFnAttr(llvm::Attribute::InlineHint);
break;
}
@@ -376,19 +500,16 @@ void CodeGenFunction::StartFunction(GlobalDecl GD, QualType RetTy,
// Emit subprogram debug descriptor.
if (CGDebugInfo *DI = getDebugInfo()) {
- unsigned NumArgs = 0;
- QualType *ArgsArray = new QualType[Args.size()];
+ SmallVector<QualType, 16> ArgTypes;
for (FunctionArgList::const_iterator i = Args.begin(), e = Args.end();
i != e; ++i) {
- ArgsArray[NumArgs++] = (*i)->getType();
+ ArgTypes.push_back((*i)->getType());
}
QualType FnType =
- getContext().getFunctionType(RetTy, ArgsArray, NumArgs,
+ getContext().getFunctionType(RetTy, ArgTypes,
FunctionProtoType::ExtProtoInfo());
- delete[] ArgsArray;
-
DI->setLocation(StartLoc);
DI->EmitFunctionStart(GD, FnType, CurFn, Builder);
}
@@ -403,7 +524,7 @@ void CodeGenFunction::StartFunction(GlobalDecl GD, QualType RetTy,
// Void type; nothing to return.
ReturnValue = 0;
} else if (CurFnInfo->getReturnInfo().getKind() == ABIArgInfo::Indirect &&
- hasAggregateLLVMType(CurFnInfo->getReturnType())) {
+ !hasScalarEvaluationKind(CurFnInfo->getReturnType())) {
// Indirect aggregate return; emit returned value directly into sret slot.
// This reduces code size, and affects correctness in C++.
ReturnValue = CurFn->arg_begin();
@@ -454,7 +575,16 @@ void CodeGenFunction::StartFunction(GlobalDecl GD, QualType RetTy,
// emit the type size.
for (FunctionArgList::const_iterator i = Args.begin(), e = Args.end();
i != e; ++i) {
- QualType Ty = (*i)->getType();
+ const VarDecl *VD = *i;
+
+ // Dig out the type as written from ParmVarDecls; it's unclear whether
+ // the standard (C99 6.9.1p10) requires this, but we're following the
+ // precedent set by gcc.
+ QualType Ty;
+ if (const ParmVarDecl *PVD = dyn_cast<ParmVarDecl>(VD))
+ Ty = PVD->getOriginalType();
+ else
+ Ty = VD->getType();
if (Ty->isVariablyModifiedType())
EmitVariablyModifiedType(Ty);
@@ -467,7 +597,10 @@ void CodeGenFunction::StartFunction(GlobalDecl GD, QualType RetTy,
void CodeGenFunction::EmitFunctionBody(FunctionArgList &Args) {
const FunctionDecl *FD = cast<FunctionDecl>(CurGD.getDecl());
assert(FD->getBody());
- EmitStmt(FD->getBody());
+ if (const CompoundStmt *S = dyn_cast<CompoundStmt>(FD->getBody()))
+ EmitCompoundStmtWithoutScope(*S);
+ else
+ EmitStmt(FD->getBody());
}
/// Tries to mark the given function nounwind based on the
@@ -493,7 +626,7 @@ static void TryMarkNoThrow(llvm::Function *F) {
void CodeGenFunction::GenerateCode(GlobalDecl GD, llvm::Function *Fn,
const CGFunctionInfo &FnInfo) {
const FunctionDecl *FD = cast<FunctionDecl>(GD.getDecl());
-
+
// Check if we should generate debug info for this function.
if (!FD->hasAttr<NoDebugAttr>())
maybeInitializeDebugInfo();
@@ -511,6 +644,10 @@ void CodeGenFunction::GenerateCode(GlobalDecl GD, llvm::Function *Fn,
SourceRange BodyRange;
if (Stmt *Body = FD->getBody()) BodyRange = Body->getSourceRange();
+ // CalleeWithThisReturn keeps track of the last callee inside this function
+ // that returns 'this'. Before starting the function, we set it to null.
+ CalleeWithThisReturn = 0;
+
// Emit the standard function prologue.
StartFunction(GD, ResTy, Fn, FnInfo, Args, BodyRange.getBegin());
@@ -533,6 +670,11 @@ void CodeGenFunction::GenerateCode(GlobalDecl GD, llvm::Function *Fn,
// The lambda "__invoke" function is special, because it forwards or
// clones the body of the function call operator (but is actually static).
EmitLambdaStaticInvokeFunction(cast<CXXMethodDecl>(FD));
+ } else if (FD->isDefaulted() && isa<CXXMethodDecl>(FD) &&
+ cast<CXXMethodDecl>(FD)->isCopyAssignmentOperator()) {
+ // Implicit copy-assignment gets the same special treatment as implicit
+ // copy-constructors.
+ emitImplicitAssignmentOperatorBody(Args);
}
else
EmitFunctionBody(Args);
@@ -545,10 +687,10 @@ void CodeGenFunction::GenerateCode(GlobalDecl GD, llvm::Function *Fn,
// function call is used by the caller, the behavior is undefined.
if (getLangOpts().CPlusPlus && !FD->hasImplicitReturnZero() &&
!FD->getResultType()->isVoidType() && Builder.GetInsertBlock()) {
- if (getLangOpts().SanitizeReturn)
+ if (SanOpts->Return)
EmitCheck(Builder.getFalse(), "missing_return",
EmitCheckSourceLocation(FD->getLocation()),
- llvm::ArrayRef<llvm::Value*>());
+ ArrayRef<llvm::Value *>(), CRK_Unrecoverable);
else if (CGM.getCodeGenOpts().OptimizationLevel == 0)
Builder.CreateCall(CGM.getIntrinsic(llvm::Intrinsic::trap));
Builder.CreateUnreachable();
@@ -557,6 +699,9 @@ void CodeGenFunction::GenerateCode(GlobalDecl GD, llvm::Function *Fn,
// Emit the standard function epilogue.
FinishFunction(BodyRange.getEnd());
+ // CalleeWithThisReturn keeps track of the last callee inside this function
+ // that returns 'this'. After finishing the function, we set it to null.
+ CalleeWithThisReturn = 0;
// If we haven't marked the function nothrow through other means, do
// a quick pass now to see if we can.
@@ -578,7 +723,7 @@ bool CodeGenFunction::ContainsLabel(const Stmt *S, bool IgnoreCaseStmts) {
// can't jump to one from outside their declared region.
if (isa<LabelStmt>(S))
return true;
-
+
// If this is a case/default statement, and we haven't seen a switch, we have
// to emit the code.
if (isa<SwitchCase>(S) && !IgnoreCaseStmts)
@@ -608,15 +753,15 @@ bool CodeGenFunction::containsBreak(const Stmt *S) {
if (isa<SwitchStmt>(S) || isa<WhileStmt>(S) || isa<DoStmt>(S) ||
isa<ForStmt>(S))
return false;
-
+
if (isa<BreakStmt>(S))
return true;
-
+
// Scan subexpressions for verboten breaks.
for (Stmt::const_child_range I = S->children(); I; ++I)
if (containsBreak(*I))
return true;
-
+
return false;
}
@@ -629,7 +774,7 @@ bool CodeGenFunction::ConstantFoldsToSimpleInteger(const Expr *Cond,
llvm::APSInt ResultInt;
if (!ConstantFoldsToSimpleInteger(Cond, ResultInt))
return false;
-
+
ResultBool = ResultInt.getBoolValue();
return true;
}
@@ -698,7 +843,7 @@ void CodeGenFunction::EmitBranchOnBoolExpr(const Expr *Cond,
return;
}
-
+
if (CondBOp->getOpcode() == BO_LOr) {
// If we have "0 || X", simplify the code. "1 || X" would have constant
// folded if the case was simple enough.
@@ -781,7 +926,7 @@ void CodeGenFunction::ErrorUnsupported(const Stmt *S, const char *Type,
/// base element of the array
/// \param sizeInChars - the total size of the VLA, in chars
static void emitNonZeroVLAInit(CodeGenFunction &CGF, QualType baseType,
- llvm::Value *dest, llvm::Value *src,
+ llvm::Value *dest, llvm::Value *src,
llvm::Value *sizeInChars) {
std::pair<CharUnits,CharUnits> baseSizeAndAlign
= CGF.getContext().getTypeInfoInChars(baseType);
@@ -821,7 +966,7 @@ static void emitNonZeroVLAInit(CodeGenFunction &CGF, QualType baseType,
cur->addIncoming(next, loopBB);
CGF.EmitBlock(contBB);
-}
+}
void
CodeGenFunction::EmitNullInitialization(llvm::Value *DestPtr, QualType Ty) {
@@ -841,7 +986,7 @@ CodeGenFunction::EmitNullInitialization(llvm::Value *DestPtr, QualType Ty) {
DestPtr = Builder.CreateBitCast(DestPtr, BP);
// Get size and alignment info for this aggregate.
- std::pair<CharUnits, CharUnits> TypeInfo =
+ std::pair<CharUnits, CharUnits> TypeInfo =
getContext().getTypeInfoInChars(Ty);
CharUnits Size = TypeInfo.first;
CharUnits Align = TypeInfo.second;
@@ -882,9 +1027,9 @@ CodeGenFunction::EmitNullInitialization(llvm::Value *DestPtr, QualType Ty) {
llvm::Constant *NullConstant = CGM.EmitNullConstant(Ty);
- llvm::GlobalVariable *NullVariable =
+ llvm::GlobalVariable *NullVariable =
new llvm::GlobalVariable(CGM.getModule(), NullConstant->getType(),
- /*isConstant=*/true,
+ /*isConstant=*/true,
llvm::GlobalVariable::PrivateLinkage,
NullConstant, Twine());
llvm::Value *SrcPtr =
@@ -895,12 +1040,12 @@ CodeGenFunction::EmitNullInitialization(llvm::Value *DestPtr, QualType Ty) {
// Get and call the appropriate llvm.memcpy overload.
Builder.CreateMemCpy(DestPtr, SrcPtr, SizeVal, Align.getQuantity(), false);
return;
- }
-
+ }
+
// Otherwise, just memset the whole thing to zero. This is legal
// because in LLVM, all default initializers (other than the ones we just
// handled above) are guaranteed to have a bit pattern of all zeros.
- Builder.CreateMemSet(DestPtr, Builder.getInt8(0), SizeVal,
+ Builder.CreateMemSet(DestPtr, Builder.getInt8(0), SizeVal,
Align.getQuantity(), false);
}
@@ -908,9 +1053,9 @@ llvm::BlockAddress *CodeGenFunction::GetAddrOfLabel(const LabelDecl *L) {
// Make sure that there is a block for the indirect goto.
if (IndirectBranch == 0)
GetIndirectGotoBlock();
-
+
llvm::BasicBlock *BB = getJumpDestForLabel(L).getBlock();
-
+
// Make sure the indirect branch includes all of the address-taken blocks.
IndirectBranch->addDestination(BB);
return llvm::BlockAddress::get(CurFn, BB);
@@ -919,13 +1064,13 @@ llvm::BlockAddress *CodeGenFunction::GetAddrOfLabel(const LabelDecl *L) {
llvm::BasicBlock *CodeGenFunction::GetIndirectGotoBlock() {
// If we already made the indirect branch for indirect goto, return its block.
if (IndirectBranch) return IndirectBranch->getParent();
-
+
CGBuilderTy TmpBuilder(createBasicBlock("indirectgoto"));
-
+
// Create the PHI node that indirect gotos will add entries to.
llvm::Value *DestVal = TmpBuilder.CreatePHI(Int8PtrTy, 0,
"indirect.goto.dest");
-
+
// Create the indirect branch instruction.
IndirectBranch = TmpBuilder.CreateIndirectBr(DestVal);
return IndirectBranch->getParent();
@@ -1130,7 +1275,7 @@ void CodeGenFunction::EmitVariablyModifiedType(QualType type) {
// If the size is an expression that is not an integer constant
// expression [...] each time it is evaluated it shall have a value
// greater than zero.
- if (getLangOpts().SanitizeVLABound &&
+ if (SanOpts->VLABound &&
size->getType()->isSignedIntegerType()) {
llvm::Value *Zero = llvm::Constant::getNullValue(Size->getType());
llvm::Constant *StaticArgs[] = {
@@ -1138,7 +1283,8 @@ void CodeGenFunction::EmitVariablyModifiedType(QualType type) {
EmitCheckTypeDescriptor(size->getType())
};
EmitCheck(Builder.CreateICmpSGT(Size, Zero),
- "vla_bound_not_positive", StaticArgs, Size);
+ "vla_bound_not_positive", StaticArgs, Size,
+ CRK_Recoverable);
}
// Always zexting here would be wrong if it weren't
@@ -1188,7 +1334,7 @@ llvm::Value* CodeGenFunction::EmitVAListRef(const Expr* E) {
return EmitLValue(E).getAddress();
}
-void CodeGenFunction::EmitDeclRefExprDbgValue(const DeclRefExpr *E,
+void CodeGenFunction::EmitDeclRefExprDbgValue(const DeclRefExpr *E,
llvm::Constant *Init) {
assert (Init && "Invalid DeclRefExpr initializer!");
if (CGDebugInfo *Dbg = getDebugInfo())
@@ -1225,7 +1371,7 @@ void CodeGenFunction::unprotectFromPeepholes(PeepholeProtection protection) {
llvm::Value *CodeGenFunction::EmitAnnotationCall(llvm::Value *AnnotationFn,
llvm::Value *AnnotatedVal,
- llvm::StringRef AnnotationStr,
+ StringRef AnnotationStr,
SourceLocation Location) {
llvm::Value *Args[4] = {
AnnotatedVal,
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-04 00:25:15 +0000