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-rw-r--r--contrib/llvm/tools/clang/lib/CodeGen/CGExprConstant.cpp99
1 files changed, 66 insertions, 33 deletions
diff --git a/contrib/llvm/tools/clang/lib/CodeGen/CGExprConstant.cpp b/contrib/llvm/tools/clang/lib/CodeGen/CGExprConstant.cpp
index 803b39907dd7..3db15c646f43 100644
--- a/contrib/llvm/tools/clang/lib/CodeGen/CGExprConstant.cpp
+++ b/contrib/llvm/tools/clang/lib/CodeGen/CGExprConstant.cpp
@@ -16,6 +16,7 @@
#include "CGObjCRuntime.h"
#include "CGRecordLayout.h"
#include "CodeGenModule.h"
+#include "TargetInfo.h"
#include "clang/AST/APValue.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/RecordLayout.h"
@@ -690,6 +691,9 @@ public:
case CK_ConstructorConversion:
return C;
+ case CK_IntToOCLSampler:
+ llvm_unreachable("global sampler variables are not generated");
+
case CK_Dependent: llvm_unreachable("saw dependent cast!");
case CK_BuiltinFnToFnPtr:
@@ -749,6 +753,7 @@ public:
case CK_FloatingToBoolean:
case CK_FloatingCast:
case CK_ZeroToOCLEvent:
+ case CK_ZeroToOCLQueue:
return nullptr;
}
llvm_unreachable("Invalid CastKind");
@@ -775,9 +780,6 @@ public:
}
llvm::Constant *EmitArrayInitialization(InitListExpr *ILE) {
- if (ILE->isStringLiteralInit())
- return Visit(ILE->getInit(0));
-
llvm::ArrayType *AType =
cast<llvm::ArrayType>(ConvertType(ILE->getType()));
llvm::Type *ElemTy = AType->getElementType();
@@ -842,6 +844,9 @@ public:
}
llvm::Constant *VisitInitListExpr(InitListExpr *ILE) {
+ if (ILE->isTransparent())
+ return Visit(ILE->getInit(0));
+
if (ILE->getType()->isArrayType())
return EmitArrayInitialization(ILE);
@@ -1018,16 +1023,17 @@ public:
switch (E->getStmtClass()) {
default: break;
case Expr::CompoundLiteralExprClass: {
- // Note that due to the nature of compound literals, this is guaranteed
- // to be the only use of the variable, so we just generate it here.
CompoundLiteralExpr *CLE = cast<CompoundLiteralExpr>(E);
+ CharUnits Align = CGM.getContext().getTypeAlignInChars(E->getType());
+ if (llvm::GlobalVariable *Addr =
+ CGM.getAddrOfConstantCompoundLiteralIfEmitted(CLE))
+ return ConstantAddress(Addr, Align);
+
llvm::Constant* C = CGM.EmitConstantExpr(CLE->getInitializer(),
CLE->getType(), CGF);
// FIXME: "Leaked" on failure.
if (!C) return ConstantAddress::invalid();
- CharUnits Align = CGM.getContext().getTypeAlignInChars(E->getType());
-
auto GV = new llvm::GlobalVariable(CGM.getModule(), C->getType(),
E->getType().isConstant(CGM.getContext()),
llvm::GlobalValue::InternalLinkage,
@@ -1035,6 +1041,7 @@ public:
llvm::GlobalVariable::NotThreadLocal,
CGM.getContext().getTargetAddressSpace(E->getType()));
GV->setAlignment(Align.getQuantity());
+ CGM.setAddrOfConstantCompoundLiteral(CLE, GV);
return ConstantAddress(GV, Align);
}
case Expr::StringLiteralClass:
@@ -1083,7 +1090,7 @@ public:
return CGM.GetAddrOfConstantCFString(Literal);
}
case Expr::BlockExprClass: {
- std::string FunctionName;
+ StringRef FunctionName;
if (CGF)
FunctionName = CGF->CurFn->getName();
else
@@ -1091,7 +1098,7 @@ public:
// This is not really an l-value.
llvm::Constant *Ptr =
- CGM.GetAddrOfGlobalBlock(cast<BlockExpr>(E), FunctionName.c_str());
+ CGM.GetAddrOfGlobalBlock(cast<BlockExpr>(E), FunctionName);
return ConstantAddress(Ptr, CGM.getPointerAlign());
}
case Expr::CXXTypeidExprClass: {
@@ -1259,6 +1266,10 @@ llvm::Constant *CodeGenModule::EmitConstantExpr(const Expr *E,
return C;
}
+llvm::Constant *CodeGenModule::getNullPointer(llvm::PointerType *T, QualType QT) {
+ return getTargetCodeGenInfo().getNullPointer(*this, T, QT);
+}
+
llvm::Constant *CodeGenModule::EmitConstantValue(const APValue &Value,
QualType DestType,
CodeGenFunction *CGF) {
@@ -1290,6 +1301,7 @@ llvm::Constant *CodeGenModule::EmitConstantValue(const APValue &Value,
llvm::ConstantInt::get(Int64Ty, Value.getLValueOffset().getQuantity());
llvm::Constant *C = nullptr;
+
if (APValue::LValueBase LVBase = Value.getLValueBase()) {
// An array can be represented as an lvalue referring to the base.
if (isa<llvm::ArrayType>(DestTy)) {
@@ -1320,7 +1332,9 @@ llvm::Constant *CodeGenModule::EmitConstantValue(const APValue &Value,
// Convert to the appropriate type; this could be an lvalue for
// an integer.
- if (isa<llvm::PointerType>(DestTy)) {
+ if (auto PT = dyn_cast<llvm::PointerType>(DestTy)) {
+ if (Value.isNullPointer())
+ return getNullPointer(PT, DestType);
// Convert the integer to a pointer-sized integer before converting it
// to a pointer.
C = llvm::ConstantExpr::getIntegerCast(
@@ -1354,7 +1368,7 @@ llvm::Constant *CodeGenModule::EmitConstantValue(const APValue &Value,
}
case APValue::Float: {
const llvm::APFloat &Init = Value.getFloat();
- if (&Init.getSemantics() == &llvm::APFloat::IEEEhalf &&
+ if (&Init.getSemantics() == &llvm::APFloat::IEEEhalf() &&
!Context.getLangOpts().NativeHalfType &&
!Context.getLangOpts().HalfArgsAndReturns)
return llvm::ConstantInt::get(VMContext, Init.bitcastToAPInt());
@@ -1480,6 +1494,18 @@ CodeGenModule::EmitConstantValueForMemory(const APValue &Value,
return C;
}
+llvm::GlobalVariable *CodeGenModule::getAddrOfConstantCompoundLiteralIfEmitted(
+ const CompoundLiteralExpr *E) {
+ return EmittedCompoundLiterals.lookup(E);
+}
+
+void CodeGenModule::setAddrOfConstantCompoundLiteral(
+ const CompoundLiteralExpr *CLE, llvm::GlobalVariable *GV) {
+ bool Ok = EmittedCompoundLiterals.insert(std::make_pair(CLE, GV)).second;
+ (void)Ok;
+ assert(Ok && "CLE has already been emitted!");
+}
+
ConstantAddress
CodeGenModule::GetAddrOfConstantCompoundLiteral(const CompoundLiteralExpr *E) {
assert(E->isFileScope() && "not a file-scope compound literal expr");
@@ -1507,7 +1533,7 @@ static llvm::Constant *EmitNullConstantForBase(CodeGenModule &CGM,
const CXXRecordDecl *base);
static llvm::Constant *EmitNullConstant(CodeGenModule &CGM,
- const CXXRecordDecl *record,
+ const RecordDecl *record,
bool asCompleteObject) {
const CGRecordLayout &layout = CGM.getTypes().getCGRecordLayout(record);
llvm::StructType *structure =
@@ -1517,24 +1543,29 @@ static llvm::Constant *EmitNullConstant(CodeGenModule &CGM,
unsigned numElements = structure->getNumElements();
std::vector<llvm::Constant *> elements(numElements);
+ auto CXXR = dyn_cast<CXXRecordDecl>(record);
// Fill in all the bases.
- for (const auto &I : record->bases()) {
- if (I.isVirtual()) {
- // Ignore virtual bases; if we're laying out for a complete
- // object, we'll lay these out later.
- continue;
- }
+ if (CXXR) {
+ for (const auto &I : CXXR->bases()) {
+ if (I.isVirtual()) {
+ // Ignore virtual bases; if we're laying out for a complete
+ // object, we'll lay these out later.
+ continue;
+ }
- const CXXRecordDecl *base =
- cast<CXXRecordDecl>(I.getType()->castAs<RecordType>()->getDecl());
+ const CXXRecordDecl *base =
+ cast<CXXRecordDecl>(I.getType()->castAs<RecordType>()->getDecl());
- // Ignore empty bases.
- if (base->isEmpty())
- continue;
-
- unsigned fieldIndex = layout.getNonVirtualBaseLLVMFieldNo(base);
- llvm::Type *baseType = structure->getElementType(fieldIndex);
- elements[fieldIndex] = EmitNullConstantForBase(CGM, baseType, base);
+ // Ignore empty bases.
+ if (base->isEmpty() ||
+ CGM.getContext().getASTRecordLayout(base).getNonVirtualSize()
+ .isZero())
+ continue;
+
+ unsigned fieldIndex = layout.getNonVirtualBaseLLVMFieldNo(base);
+ llvm::Type *baseType = structure->getElementType(fieldIndex);
+ elements[fieldIndex] = EmitNullConstantForBase(CGM, baseType, base);
+ }
}
// Fill in all the fields.
@@ -1558,8 +1589,8 @@ static llvm::Constant *EmitNullConstant(CodeGenModule &CGM,
}
// Fill in the virtual bases, if we're working with the complete object.
- if (asCompleteObject) {
- for (const auto &I : record->vbases()) {
+ if (CXXR && asCompleteObject) {
+ for (const auto &I : CXXR->vbases()) {
const CXXRecordDecl *base =
cast<CXXRecordDecl>(I.getType()->castAs<RecordType>()->getDecl());
@@ -1601,6 +1632,10 @@ static llvm::Constant *EmitNullConstantForBase(CodeGenModule &CGM,
}
llvm::Constant *CodeGenModule::EmitNullConstant(QualType T) {
+ if (T->getAs<PointerType>())
+ return getNullPointer(
+ cast<llvm::PointerType>(getTypes().ConvertTypeForMem(T)), T);
+
if (getTypes().isZeroInitializable(T))
return llvm::Constant::getNullValue(getTypes().ConvertTypeForMem(T));
@@ -1616,10 +1651,8 @@ llvm::Constant *CodeGenModule::EmitNullConstant(QualType T) {
return llvm::ConstantArray::get(ATy, Array);
}
- if (const RecordType *RT = T->getAs<RecordType>()) {
- const CXXRecordDecl *RD = cast<CXXRecordDecl>(RT->getDecl());
- return ::EmitNullConstant(*this, RD, /*complete object*/ true);
- }
+ if (const RecordType *RT = T->getAs<RecordType>())
+ return ::EmitNullConstant(*this, RT->getDecl(), /*complete object*/ true);
assert(T->isMemberDataPointerType() &&
"Should only see pointers to data members here!");
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-22 12:26:44 +0000