24#include "llvm/IR/Constants.h"
25#include "llvm/IR/Function.h"
26#include "llvm/IR/GlobalVariable.h"
27#include "llvm/IR/IntrinsicInst.h"
28#include "llvm/IR/Intrinsics.h"
30using namespace CodeGen;
37class AggExprEmitter :
public StmtVisitor<AggExprEmitter> {
58 void withReturnValueSlot(
const Expr *E,
63 : CGF(cgf), Builder(CGF.Builder), Dest(Dest),
64 IsResultUnused(IsResultUnused) { }
73 void EmitAggLoadOfLValue(
const Expr *E);
88 void EmitArrayInit(
Address DestPtr, llvm::ArrayType *AType,
QualType ArrayQTy,
93 if (CGF.
getLangOpts().getGC() && TypeRequiresGCollection(T))
98 bool TypeRequiresGCollection(
QualType T);
109 void VisitStmt(
Stmt *S) {
131 if (llvm::Value *Result =
ConstantEmitter(CGF).tryEmitConstantExpr(E)) {
136 if (Result->getType() != StoreDest.
getType())
147 void VisitDeclRefExpr(
DeclRefExpr *E) { EmitAggLoadOfLValue(E); }
148 void VisitMemberExpr(
MemberExpr *ME) { EmitAggLoadOfLValue(ME); }
149 void VisitUnaryDeref(
UnaryOperator *E) { EmitAggLoadOfLValue(E); }
150 void VisitStringLiteral(
StringLiteral *E) { EmitAggLoadOfLValue(E); }
153 EmitAggLoadOfLValue(E);
156 EmitAggLoadOfLValue(E);
161 void VisitCallExpr(
const CallExpr *E);
162 void VisitStmtExpr(
const StmtExpr *E);
164 void VisitPointerToDataMemberBinaryOperator(
const BinaryOperator *BO);
174 EmitAggLoadOfLValue(E);
185 llvm::Value *outerBegin =
nullptr);
189 CodeGenFunction::CXXDefaultArgExprScope
Scope(CGF, DAE);
193 CodeGenFunction::CXXDefaultInitExprScope
Scope(CGF, DIE);
203 void VisitCXXTypeidExpr(
CXXTypeidExpr *E) { EmitAggLoadOfLValue(E); }
210 return EmitFinalDestCopy(E->
getType(), LV);
214 bool NeedsDestruction =
217 if (NeedsDestruction)
220 if (NeedsDestruction)
236 EmitFinalDestCopy(E->
getType(), Res);
248void AggExprEmitter::EmitAggLoadOfLValue(
const Expr *E) {
257 EmitFinalDestCopy(E->
getType(), LV);
261bool AggExprEmitter::TypeRequiresGCollection(
QualType T) {
264 if (!RecordTy)
return false;
268 if (isa<CXXRecordDecl>(Record) &&
269 (cast<CXXRecordDecl>(Record)->hasNonTrivialCopyConstructor() ||
270 !cast<CXXRecordDecl>(Record)->hasTrivialDestructor()))
274 return Record->hasObjectMember();
277void AggExprEmitter::withReturnValueSlot(
280 bool RequiresDestruction =
296 llvm::Value *LifetimeSizePtr =
nullptr;
297 llvm::IntrinsicInst *LifetimeStartInst =
nullptr;
302 llvm::TypeSize
Size =
305 if (LifetimeSizePtr) {
307 cast<llvm::IntrinsicInst>(std::prev(Builder.GetInsertPoint()));
308 assert(LifetimeStartInst->getIntrinsicID() ==
309 llvm::Intrinsic::lifetime_start &&
310 "Last insertion wasn't a lifetime.start?");
326 EmitFinalDestCopy(E->
getType(), Src);
328 if (!RequiresDestruction && LifetimeStartInst) {
339 assert(src.
isAggregate() &&
"value must be aggregate value!");
341 EmitFinalDestCopy(
type, srcLV, EVK_RValue);
358 if (SrcValueKind == EVK_RValue) {
379 EmitCopy(
type, Dest, srcAgg);
415 assert(Array.isSimple() &&
"initializer_list array not a simple lvalue");
416 Address ArrayPtr = Array.getAddress(CGF);
420 assert(
ArrayType &&
"std::initializer_list constructed from non-array");
425 if (Field ==
Record->field_end()) {
431 if (!
Field->getType()->isPointerType() ||
441 llvm::Value *
Zero = llvm::ConstantInt::get(CGF.
PtrDiffTy, 0);
442 llvm::Value *IdxStart[] = {
Zero,
Zero };
443 llvm::Value *ArrayStart = Builder.CreateInBoundsGEP(
448 if (Field ==
Record->field_end()) {
455 if (
Field->getType()->isPointerType() &&
459 llvm::Value *IdxEnd[] = {
Zero,
Size };
460 llvm::Value *ArrayEnd = Builder.CreateInBoundsGEP(
478 if (isa<ImplicitValueInitExpr>(E))
481 if (
auto *ILE = dyn_cast<InitListExpr>(E)) {
482 if (ILE->getNumInits())
487 if (
auto *Cons = dyn_cast_or_null<CXXConstructExpr>(E))
488 return Cons->getConstructor()->isDefaultConstructor() &&
489 Cons->getConstructor()->isTrivial();
497void AggExprEmitter::EmitArrayInit(
Address DestPtr, llvm::ArrayType *AType,
500 uint64_t NumInitElements = Args.size();
502 uint64_t NumArrayElements = AType->getNumElements();
503 assert(NumInitElements <= NumArrayElements);
510 llvm::Value *zero = llvm::ConstantInt::get(CGF.
SizeTy, 0);
511 llvm::Value *indices[] = { zero, zero };
512 llvm::Value *begin = Builder.CreateInBoundsGEP(
524 if (NumInitElements * elementSize.
getQuantity() > 16 &&
529 if (llvm::Constant *
C =
530 Emitter.tryEmitForInitializer(ExprToVisit, AS, ArrayQTy)) {
531 auto GV =
new llvm::GlobalVariable(
533 true, llvm::GlobalValue::PrivateLinkage,
C,
535 nullptr, llvm::GlobalVariable::NotThreadLocal,
540 Address GVAddr(GV, GV->getValueType(), Align);
541 EmitFinalDestCopy(ArrayQTy, CGF.
MakeAddrLValue(GVAddr, ArrayQTy));
552 llvm::Instruction *cleanupDominator =
nullptr;
559 "arrayinit.endOfInit");
560 cleanupDominator = Builder.CreateStore(begin, endOfInit);
571 llvm::Value *one = llvm::ConstantInt::get(CGF.
SizeTy, 1);
578 llvm::Value *element = begin;
581 for (uint64_t i = 0; i != NumInitElements; ++i) {
584 element = Builder.CreateInBoundsGEP(
585 llvmElementType, element, one,
"arrayinit.element");
590 if (endOfInit.
isValid()) Builder.CreateStore(element, endOfInit);
594 Address(element, llvmElementType, elementAlign), elementType);
595 EmitInitializationToLValue(Args[i], elementLV);
604 if (NumInitElements != NumArrayElements &&
605 !(Dest.
isZeroed() && hasTrivialFiller &&
612 if (NumInitElements) {
613 element = Builder.CreateInBoundsGEP(
614 llvmElementType, element, one,
"arrayinit.start");
615 if (endOfInit.
isValid()) Builder.CreateStore(element, endOfInit);
619 llvm::Value *end = Builder.CreateInBoundsGEP(
620 llvmElementType, begin,
621 llvm::ConstantInt::get(CGF.
SizeTy, NumArrayElements),
"arrayinit.end");
623 llvm::BasicBlock *entryBB = Builder.GetInsertBlock();
628 llvm::PHINode *currentElement =
629 Builder.CreatePHI(element->getType(), 2,
"arrayinit.cur");
630 currentElement->addIncoming(element, entryBB);
639 CodeGenFunction::RunCleanupsScope CleanupsScope(CGF);
641 Address(currentElement, llvmElementType, elementAlign), elementType);
643 EmitInitializationToLValue(ArrayFiller, elementLV);
645 EmitNullInitializationToLValue(elementLV);
649 llvm::Value *nextElement = Builder.CreateInBoundsGEP(
650 llvmElementType, currentElement, one,
"arrayinit.next");
653 if (endOfInit.
isValid()) Builder.CreateStore(nextElement, endOfInit);
656 llvm::Value *done = Builder.CreateICmpEQ(nextElement, end,
659 Builder.CreateCondBr(done, endBB, bodyBB);
660 currentElement->addIncoming(nextElement, Builder.GetInsertBlock());
691 EmitAggLoadOfLValue(E);
717 if (
auto castE = dyn_cast<CastExpr>(op)) {
718 if (castE->getCastKind() == kind)
719 return castE->getSubExpr();
724void AggExprEmitter::VisitCastExpr(
CastExpr *E) {
725 if (
const auto *ECE = dyn_cast<ExplicitCastExpr>(E))
730 assert(isa<CXXDynamicCastExpr>(E) &&
"CK_Dynamic without a dynamic_cast?");
732 CodeGenFunction::TCK_Load);
760 case CK_LValueToRValueBitCast: {
771 llvm::Value *SizeVal = llvm::ConstantInt::get(
774 Builder.CreateMemCpy(DestAddress, SourceAddress, SizeVal);
778 case CK_DerivedToBase:
779 case CK_BaseToDerived:
780 case CK_UncheckedDerivedToBase: {
781 llvm_unreachable(
"cannot perform hierarchy conversion in EmitAggExpr: "
782 "should have been unpacked before we got here");
785 case CK_NonAtomicToAtomic:
786 case CK_AtomicToNonAtomic: {
787 bool isToAtomic = (E->
getCastKind() == CK_NonAtomicToAtomic);
792 if (isToAtomic) std::swap(
atomicType, valueType);
805 (isToAtomic ? CK_AtomicToNonAtomic : CK_NonAtomicToAtomic);
812 "peephole significantly changed types?");
850 return EmitFinalDestCopy(valueType, rvalue);
852 case CK_AddressSpaceConversion:
855 case CK_LValueToRValue:
878 case CK_UserDefinedConversion:
879 case CK_ConstructorConversion:
882 "Implicit cast types must be compatible");
886 case CK_LValueBitCast:
887 llvm_unreachable(
"should not be emitting lvalue bitcast as rvalue");
891 case CK_ArrayToPointerDecay:
892 case CK_FunctionToPointerDecay:
893 case CK_NullToPointer:
894 case CK_NullToMemberPointer:
895 case CK_BaseToDerivedMemberPointer:
896 case CK_DerivedToBaseMemberPointer:
897 case CK_MemberPointerToBoolean:
898 case CK_ReinterpretMemberPointer:
899 case CK_IntegralToPointer:
900 case CK_PointerToIntegral:
901 case CK_PointerToBoolean:
904 case CK_IntegralCast:
905 case CK_BooleanToSignedIntegral:
906 case CK_IntegralToBoolean:
907 case CK_IntegralToFloating:
908 case CK_FloatingToIntegral:
909 case CK_FloatingToBoolean:
910 case CK_FloatingCast:
911 case CK_CPointerToObjCPointerCast:
912 case CK_BlockPointerToObjCPointerCast:
913 case CK_AnyPointerToBlockPointerCast:
914 case CK_ObjCObjectLValueCast:
915 case CK_FloatingRealToComplex:
916 case CK_FloatingComplexToReal:
917 case CK_FloatingComplexToBoolean:
918 case CK_FloatingComplexCast:
919 case CK_FloatingComplexToIntegralComplex:
920 case CK_IntegralRealToComplex:
921 case CK_IntegralComplexToReal:
922 case CK_IntegralComplexToBoolean:
923 case CK_IntegralComplexCast:
924 case CK_IntegralComplexToFloatingComplex:
925 case CK_ARCProduceObject:
926 case CK_ARCConsumeObject:
927 case CK_ARCReclaimReturnedObject:
928 case CK_ARCExtendBlockObject:
929 case CK_CopyAndAutoreleaseBlockObject:
930 case CK_BuiltinFnToFnPtr:
931 case CK_ZeroToOCLOpaqueType:
934 case CK_IntToOCLSampler:
935 case CK_FloatingToFixedPoint:
936 case CK_FixedPointToFloating:
937 case CK_FixedPointCast:
938 case CK_FixedPointToBoolean:
939 case CK_FixedPointToIntegral:
940 case CK_IntegralToFixedPoint:
941 llvm_unreachable(
"cast kind invalid for aggregate types");
945void AggExprEmitter::VisitCallExpr(
const CallExpr *E) {
947 EmitAggLoadOfLValue(E);
967void AggExprEmitter::VisitStmtExpr(
const StmtExpr *E) {
968 CodeGenFunction::StmtExprEvaluation eval(CGF);
981 const char *NameSuffix =
"") {
984 ArgTy = CT->getElementType();
988 "member pointers may only be compared for equality");
990 CGF, LHS, RHS, MPT,
false);
996 llvm::CmpInst::Predicate FCmp;
997 llvm::CmpInst::Predicate SCmp;
998 llvm::CmpInst::Predicate UCmp;
1000 CmpInstInfo InstInfo = [&]() -> CmpInstInfo {
1001 using FI = llvm::FCmpInst;
1002 using II = llvm::ICmpInst;
1005 return {
"cmp.lt", FI::FCMP_OLT, II::ICMP_SLT, II::ICMP_ULT};
1007 return {
"cmp.gt", FI::FCMP_OGT, II::ICMP_SGT, II::ICMP_UGT};
1009 return {
"cmp.eq", FI::FCMP_OEQ, II::ICMP_EQ, II::ICMP_EQ};
1011 llvm_unreachable(
"Unrecognised CompareKind enum");
1015 return Builder.CreateFCmp(InstInfo.FCmp, LHS, RHS,
1016 llvm::Twine(InstInfo.Name) + NameSuffix);
1020 return Builder.CreateICmp(Inst, LHS, RHS,
1021 llvm::Twine(InstInfo.Name) + NameSuffix);
1024 llvm_unreachable(
"unsupported aggregate binary expression should have "
1025 "already been handled");
1029 using llvm::BasicBlock;
1030 using llvm::PHINode;
1037 "cannot copy non-trivially copyable aggregate");
1049 auto EmitOperand = [&](
Expr *E) -> std::pair<Value *, Value *> {
1058 auto LHSValues = EmitOperand(E->
getLHS()),
1059 RHSValues = EmitOperand(E->
getRHS());
1062 Value *Cmp =
EmitCompare(Builder, CGF, E, LHSValues.first, RHSValues.first,
1063 K, IsComplex ?
".r" :
"");
1068 RHSValues.second, K,
".i");
1069 return Builder.CreateAnd(Cmp, CmpImag,
"and.eq");
1072 return Builder.getInt(VInfo->getIntValue());
1080 Builder.CreateSelect(EmitCmp(
CK_Less), EmitCmpRes(CmpInfo.
getLess()),
1082 Select = Builder.CreateSelect(EmitCmp(
CK_Equal),
1084 SelectOne,
"sel.eq");
1086 Value *SelectEq = Builder.CreateSelect(
1091 SelectEq,
"sel.gt");
1092 Select = Builder.CreateSelect(
1093 EmitCmp(
CK_Less), EmitCmpRes(CmpInfo.
getLess()), SelectGT,
"sel.lt");
1108void AggExprEmitter::VisitBinaryOperator(
const BinaryOperator *E) {
1110 VisitPointerToDataMemberBinaryOperator(E);
1115void AggExprEmitter::VisitPointerToDataMemberBinaryOperator(
1118 EmitFinalDestCopy(E->
getType(), LV);
1128 if (
const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) {
1129 const VarDecl *var = dyn_cast<VarDecl>(DRE->getDecl());
1130 return (var && var->
hasAttr<BlocksAttr>());
1139 if (op->isAssignmentOp() || op->isPtrMemOp())
1143 if (op->getOpcode() == BO_Comma)
1151 = dyn_cast<AbstractConditionalOperator>(E)) {
1157 = dyn_cast<OpaqueValueExpr>(E)) {
1158 if (
const Expr *src = op->getSourceExpr())
1165 }
else if (
const CastExpr *
cast = dyn_cast<CastExpr>(E)) {
1166 if (
cast->getCastKind() == CK_LValueToRValue)
1172 }
else if (
const UnaryOperator *uop = dyn_cast<UnaryOperator>(E)) {
1176 }
else if (
const MemberExpr *mem = dyn_cast<MemberExpr>(E)) {
1192 &&
"Invalid assignment");
1247 EmitFinalDestCopy(E->
getType(), LHS);
1255void AggExprEmitter::
1262 CodeGenFunction::OpaqueValueMapping binding(CGF, E);
1264 CodeGenFunction::ConditionalEvaluation eval(CGF);
1270 bool destructNonTrivialCStruct =
1271 !isExternallyDestructed &&
1273 isExternallyDestructed |= destructNonTrivialCStruct;
1282 assert(CGF.
HaveInsertPoint() &&
"expression evaluation ended with no IP!");
1283 CGF.
Builder.CreateBr(ContBlock);
1296 if (destructNonTrivialCStruct)
1303void AggExprEmitter::VisitChooseExpr(
const ChooseExpr *CE) {
1307void AggExprEmitter::VisitVAArgExpr(
VAArgExpr *VE) {
1332 if (!wasExternallyDestructed)
1342void AggExprEmitter::VisitCXXInheritedCtorInitExpr(
1351AggExprEmitter::VisitLambdaExpr(
LambdaExpr *E) {
1358 llvm::Instruction *CleanupDominator =
nullptr;
1363 i != e; ++i, ++CurField) {
1366 if (CurField->hasCapturedVLAType()) {
1371 EmitInitializationToLValue(*i, LV);
1375 CurField->getType().isDestructedType()) {
1378 if (!CleanupDominator)
1381 llvm::Constant::getNullValue(CGF.
Int8PtrTy),
1393 for (
unsigned i = Cleanups.size(); i != 0; --i)
1397 if (CleanupDominator)
1398 CleanupDominator->eraseFromParent();
1402 CodeGenFunction::RunCleanupsScope cleanups(CGF);
1425 case CK_UserDefinedConversion:
1426 case CK_ConstructorConversion:
1432 case CK_BooleanToSignedIntegral:
1433 case CK_FloatingCast:
1434 case CK_FloatingComplexCast:
1435 case CK_FloatingComplexToBoolean:
1436 case CK_FloatingComplexToIntegralComplex:
1437 case CK_FloatingComplexToReal:
1438 case CK_FloatingRealToComplex:
1439 case CK_FloatingToBoolean:
1440 case CK_FloatingToIntegral:
1441 case CK_IntegralCast:
1442 case CK_IntegralComplexCast:
1443 case CK_IntegralComplexToBoolean:
1444 case CK_IntegralComplexToFloatingComplex:
1445 case CK_IntegralComplexToReal:
1446 case CK_IntegralRealToComplex:
1447 case CK_IntegralToBoolean:
1448 case CK_IntegralToFloating:
1450 case CK_IntegralToPointer:
1451 case CK_PointerToIntegral:
1453 case CK_VectorSplat:
1455 case CK_NonAtomicToAtomic:
1456 case CK_AtomicToNonAtomic:
1459 case CK_BaseToDerivedMemberPointer:
1460 case CK_DerivedToBaseMemberPointer:
1461 case CK_MemberPointerToBoolean:
1462 case CK_NullToMemberPointer:
1463 case CK_ReinterpretMemberPointer:
1467 case CK_AnyPointerToBlockPointerCast:
1468 case CK_BlockPointerToObjCPointerCast:
1469 case CK_CPointerToObjCPointerCast:
1470 case CK_ObjCObjectLValueCast:
1471 case CK_IntToOCLSampler:
1472 case CK_ZeroToOCLOpaqueType:
1476 case CK_FixedPointCast:
1477 case CK_FixedPointToBoolean:
1478 case CK_FixedPointToFloating:
1479 case CK_FixedPointToIntegral:
1480 case CK_FloatingToFixedPoint:
1481 case CK_IntegralToFixedPoint:
1485 case CK_AddressSpaceConversion:
1486 case CK_BaseToDerived:
1487 case CK_DerivedToBase:
1489 case CK_NullToPointer:
1490 case CK_PointerToBoolean:
1495 case CK_ARCConsumeObject:
1496 case CK_ARCExtendBlockObject:
1497 case CK_ARCProduceObject:
1498 case CK_ARCReclaimReturnedObject:
1499 case CK_CopyAndAutoreleaseBlockObject:
1500 case CK_ArrayToPointerDecay:
1501 case CK_FunctionToPointerDecay:
1502 case CK_BuiltinFnToFnPtr:
1504 case CK_LValueBitCast:
1505 case CK_LValueToRValue:
1506 case CK_LValueToRValueBitCast:
1507 case CK_UncheckedDerivedToBase:
1510 llvm_unreachable(
"Unhandled clang::CastKind enum");
1518 while (
auto *CE = dyn_cast<CastExpr>(E)) {
1526 return IL->getValue() == 0;
1529 return FL->getValue().isPosZero();
1531 if ((isa<ImplicitValueInitExpr>(E) || isa<CXXScalarValueInitExpr>(E)) &&
1535 if (
const CastExpr *ICE = dyn_cast<CastExpr>(E))
1536 return ICE->getCastKind() == CK_NullToPointer &&
1541 return CL->getValue() == 0;
1549AggExprEmitter::EmitInitializationToLValue(
Expr *E,
LValue LV) {
1556 }
else if (isa<ImplicitValueInitExpr>(E) || isa<CXXScalarValueInitExpr>(E)) {
1557 return EmitNullInitializationToLValue(LV);
1558 }
else if (isa<NoInitExpr>(E)) {
1561 }
else if (
type->isReferenceType()) {
1585 llvm_unreachable(
"bad evaluation kind");
1588void AggExprEmitter::EmitNullInitializationToLValue(
LValue lv) {
1621void AggExprEmitter::VisitInitListExpr(
InitListExpr *E) {
1628 VisitCXXParenListOrInitListExpr(
1632void AggExprEmitter::VisitCXXParenListOrInitListExpr(
1641 if (llvm::Constant *
C =
1642 CGF.
CGM.EmitConstantExpr(ExprToVisit, ExprToVisit->
getType(), &CGF)) {
1643 llvm::GlobalVariable* GV =
1644 new llvm::GlobalVariable(CGF.
CGM.
getModule(),
C->getType(),
true,
1645 llvm::GlobalValue::InternalLinkage,
C,
"");
1646 EmitFinalDestCopy(ExprToVisit->
getType(),
1660 InitExprs, ArrayFiller);
1666 assert(InitExprs.size() == 0 &&
1667 "you can only use an empty initializer with VLAs");
1673 "Only support structs/unions here!");
1679 unsigned NumInitElements = InitExprs.size();
1685 llvm::Instruction *cleanupDominator =
nullptr;
1687 cleanups.push_back(cleanup);
1688 if (!cleanupDominator)
1694 unsigned curInitIndex = 0;
1697 if (
auto *CXXRD = dyn_cast<CXXRecordDecl>(record)) {
1698 assert(NumInitElements >= CXXRD->getNumBases() &&
1699 "missing initializer for base class");
1700 for (
auto &
Base : CXXRD->bases()) {
1701 assert(!
Base.isVirtual() &&
"should not see vbases here");
1702 auto *BaseRD =
Base.getType()->getAsCXXRecordDecl();
1712 CGF.
EmitAggExpr(InitExprs[curInitIndex++], AggSlot);
1715 Base.getType().isDestructedType()) {
1723 CodeGenFunction::FieldConstructionScope FCS(CGF, Dest.
getAddress());
1728 if (!InitializedFieldInUnion) {
1734 for (
const auto *Field : record->
fields())
1735 assert((
Field->isUnnamedBitfield() ||
Field->isAnonymousStructOrUnion()) &&
"Only unnamed bitfields or ananymous class allowed");
1744 if (NumInitElements) {
1746 EmitInitializationToLValue(InitExprs[0], FieldLoc);
1749 EmitNullInitializationToLValue(FieldLoc);
1757 for (
const auto *field : record->
fields()) {
1759 if (field->getType()->isIncompleteArrayType())
1763 if (field->isUnnamedBitfield())
1769 if (curInitIndex == NumInitElements && Dest.
isZeroed() &&
1778 if (curInitIndex < NumInitElements) {
1780 EmitInitializationToLValue(InitExprs[curInitIndex++], LV);
1783 EmitNullInitializationToLValue(LV);
1789 bool pushedCleanup =
false;
1791 = field->getType().isDestructedType()) {
1797 pushedCleanup =
true;
1803 if (!pushedCleanup && LV.
isSimple())
1804 if (llvm::GetElementPtrInst *GEP =
1805 dyn_cast<llvm::GetElementPtrInst>(LV.
getPointer(CGF)))
1806 if (GEP->use_empty())
1807 GEP->eraseFromParent();
1812 assert((cleanupDominator || cleanups.empty()) &&
1813 "Missing cleanupDominator before deactivating cleanup blocks");
1814 for (
unsigned i = cleanups.size(); i != 0; --i)
1818 if (cleanupDominator)
1819 cleanupDominator->eraseFromParent();
1823 llvm::Value *outerBegin) {
1825 CodeGenFunction::OpaqueValueMapping binding(CGF, E->
getCommonExpr());
1834 llvm::Value *zero = llvm::ConstantInt::get(CGF.
SizeTy, 0);
1835 llvm::Value *indices[] = {zero, zero};
1836 llvm::Value *begin = Builder.CreateInBoundsGEP(
1853 llvm::BasicBlock *entryBB = Builder.GetInsertBlock();
1858 llvm::PHINode *index =
1859 Builder.CreatePHI(zero->getType(), 2,
"arrayinit.index");
1860 index->addIncoming(zero, entryBB);
1861 llvm::Value *element =
1862 Builder.CreateInBoundsGEP(llvmElementType, begin, index);
1868 if (outerBegin->getType() != element->getType())
1869 outerBegin = Builder.CreateBitCast(outerBegin, element->getType());
1882 CodeGenFunction::RunCleanupsScope CleanupsScope(CGF);
1883 CodeGenFunction::ArrayInitLoopExprScope
Scope(CGF, index);
1885 Address(element, llvmElementType, elementAlign), elementType);
1893 AggExprEmitter(CGF, elementSlot,
false)
1894 .VisitArrayInitLoopExpr(InnerLoop, outerBegin);
1896 EmitInitializationToLValue(E->
getSubExpr(), elementLV);
1900 llvm::Value *nextIndex = Builder.CreateNUWAdd(
1901 index, llvm::ConstantInt::get(CGF.
SizeTy, 1),
"arrayinit.next");
1902 index->addIncoming(nextIndex, Builder.GetInsertBlock());
1905 llvm::Value *done = Builder.CreateICmpEQ(
1906 nextIndex, llvm::ConstantInt::get(CGF.
SizeTy, numElements),
1909 Builder.CreateCondBr(done, endBB, bodyBB);
1922 EmitInitializationToLValue(E->
getBase(), DestLV);
1934 if (
auto *MTE = dyn_cast<MaterializeTemporaryExpr>(E))
1935 E = MTE->getSubExpr();
1945 ILE = dyn_cast<InitListExpr>(ILE->
getInit(0));
1953 if (!RT->isUnionType()) {
1957 unsigned ILEElement = 0;
1958 if (
auto *CXXRD = dyn_cast<CXXRecordDecl>(SD))
1959 while (ILEElement != CXXRD->getNumBases())
1962 for (
const auto *Field : SD->
fields()) {
1965 if (Field->getType()->isIncompleteArrayType() ||
1968 if (Field->isUnnamedBitfield())
1974 if (Field->getType()->isReferenceType())
1981 return NumNonZeroBytes;
1987 for (
unsigned i = 0, e = ILE->
getNumInits(); i != e; ++i)
1989 return NumNonZeroBytes;
2006 const CXXRecordDecl *RD = cast<CXXRecordDecl>(RT->getDecl());
2019 if (NumNonZeroBytes*4 > Size)
2023 llvm::Constant *SizeVal = CGF.
Builder.getInt64(Size.getQuantity());
2041 "Invalid aggregate expression to emit");
2043 "slot has bits but no address");
2048 AggExprEmitter(*
this, Slot, Slot.
isIgnored()).Visit(
const_cast<Expr*
>(E));
2094 getContext().getASTRecordLayout(BaseRD).getSize() <=
2113 assert((
Record->hasTrivialCopyConstructor() ||
2114 Record->hasTrivialCopyAssignment() ||
2115 Record->hasTrivialMoveConstructor() ||
2116 Record->hasTrivialMoveAssignment() ||
2117 Record->hasAttr<TrivialABIAttr>() ||
Record->isUnion()) &&
2118 "Trying to aggregate-copy a type without a trivial copy/move "
2119 "constructor or assignment operator");
2128 if (
getTargetHooks().emitCUDADeviceBuiltinSurfaceDeviceCopy(*
this, Dest,
2132 if (
getTargetHooks().emitCUDADeviceBuiltinTextureDeviceCopy(*
this, Dest,
2158 llvm::Value *SizeVal =
nullptr;
2161 if (
auto *VAT = dyn_cast_or_null<VariableArrayType>(
2167 SizeVal =
Builder.CreateNUWMul(
2197 if (
Record->hasObjectMember()) {
2219 Inst->setMetadata(llvm::LLVMContext::MD_tbaa_struct, TBAAStructTag);
Defines the clang::ASTContext interface.
static CharUnits GetNumNonZeroBytesInInit(const Expr *E, CodeGenFunction &CGF)
GetNumNonZeroBytesInInit - Get an approximate count of the number of non-zero bytes that will be stor...
static Expr * findPeephole(Expr *op, CastKind kind, const ASTContext &ctx)
Attempt to look through various unimportant expressions to find a cast of the given kind.
static bool isBlockVarRef(const Expr *E)
Is the value of the given expression possibly a reference to or into a __block variable?
static bool isTrivialFiller(Expr *E)
Determine if E is a trivial array filler, that is, one that is equivalent to zero-initialization.
static bool isSimpleZero(const Expr *E, CodeGenFunction &CGF)
isSimpleZero - If emitting this value will obviously just cause a store of zero to memory,...
static llvm::Value * EmitCompare(CGBuilderTy &Builder, CodeGenFunction &CGF, const BinaryOperator *E, llvm::Value *LHS, llvm::Value *RHS, CompareKind Kind, const char *NameSuffix="")
static bool castPreservesZero(const CastExpr *CE)
Determine whether the given cast kind is known to always convert values with all zero bits in their v...
static void CheckAggExprForMemSetUse(AggValueSlot &Slot, const Expr *E, CodeGenFunction &CGF)
CheckAggExprForMemSetUse - If the initializer is large and has a lot of zeros in it,...
Defines the C++ Decl subclasses, other than those for templates (found in DeclTemplate....
Defines the C++ template declaration subclasses.
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
const ConstantArrayType * getAsConstantArrayType(QualType T) const
CharUnits getTypeAlignInChars(QualType T) const
Return the ABI-specified alignment of a (complete) type T, in characters.
const ASTRecordLayout & getASTRecordLayout(const RecordDecl *D) const
Get or compute information about the layout of the specified record (struct/union/class) D,...
bool hasSameType(QualType T1, QualType T2) const
Determine whether the given types T1 and T2 are equivalent.
QualType getBaseElementType(const ArrayType *VAT) const
Return the innermost element type of an array type.
ComparisonCategories CompCategories
Types and expressions required to build C++2a three-way comparisons using operator<=>,...
CanQualType getSizeType() const
Return the unique type for "size_t" (C99 7.17), defined in <stddef.h>.
TypeInfoChars getTypeInfoDataSizeInChars(QualType T) const
TypeInfoChars getTypeInfoInChars(const Type *T) const
bool hasSameUnqualifiedType(QualType T1, QualType T2) const
Determine whether the given types are equivalent after cvr-qualifiers have been removed.
const ArrayType * getAsArrayType(QualType T) const
Type Query functions.
CharUnits getTypeSizeInChars(QualType T) const
Return the size of the specified (complete) type T, in characters.
CharUnits toCharUnitsFromBits(int64_t BitSize) const
Convert a size in bits to a size in characters.
unsigned getTargetAddressSpace(LangAS AS) const
ASTRecordLayout - This class contains layout information for one RecordDecl, which is a struct/union/...
uint64_t getFieldOffset(unsigned FieldNo) const
getFieldOffset - Get the offset of the given field index, in bits.
CharUnits getBaseClassOffset(const CXXRecordDecl *Base) const
getBaseClassOffset - Get the offset, in chars, for the given base class.
CharUnits getNonVirtualSize() const
getNonVirtualSize - Get the non-virtual size (in chars) of an object, which is the size of the object...
AbstractConditionalOperator - An abstract base class for ConditionalOperator and BinaryConditionalOpe...
Expr * getCond() const
getCond - Return the expression representing the condition for the ?: operator.
Expr * getTrueExpr() const
getTrueExpr - Return the subexpression representing the value of the expression if the condition eval...
Expr * getFalseExpr() const
getFalseExpr - Return the subexpression representing the value of the expression if the condition eva...
Represents a loop initializing the elements of an array.
llvm::APInt getArraySize() const
OpaqueValueExpr * getCommonExpr() const
Get the common subexpression shared by all initializations (the source array).
Expr * getSubExpr() const
Get the initializer to use for each array element.
ArraySubscriptExpr - [C99 6.5.2.1] Array Subscripting.
Represents an array type, per C99 6.7.5.2 - Array Declarators.
QualType getElementType() const
AtomicExpr - Variadic atomic builtins: __atomic_exchange, __atomic_fetch_*, __atomic_load,...
QualType getValueType() const
Gets the type contained by this atomic type, i.e.
A builtin binary operation expression such as "x + y" or "x <= y".
Represents binding an expression to a temporary.
CXXTemporary * getTemporary()
const Expr * getSubExpr() const
Represents a call to a C++ constructor.
A default argument (C++ [dcl.fct.default]).
A use of a default initializer in a constructor or in aggregate initialization.
Expr * getExpr()
Get the initialization expression that will be used.
Represents a call to an inherited base class constructor from an inheriting constructor.
bool constructsVBase() const
Determine whether this constructor is actually constructing a base class (rather than a complete obje...
CXXConstructorDecl * getConstructor() const
Get the constructor that this expression will call.
bool inheritedFromVBase() const
Determine whether the inherited constructor is inherited from a virtual base of the object we constru...
Represents a list-initialization with parenthesis.
ArrayRef< Expr * > getInitExprs()
FieldDecl * getInitializedFieldInUnion()
Represents a C++ struct/union/class.
bool isTriviallyCopyable() const
Determine whether this class is considered trivially copyable per (C++11 [class]p6).
bool hasUserDeclaredConstructor() const
Determine whether this class has any user-declared constructors.
A rewritten comparison expression that was originally written using operator syntax.
Expr * getSemanticForm()
Get an equivalent semantic form for this expression.
An expression "T()" which creates a value-initialized rvalue of type T, which is a non-class type.
Implicit construction of a std::initializer_list<T> object from an array temporary within list-initia...
A C++ throw-expression (C++ [except.throw]).
A C++ typeid expression (C++ [expr.typeid]), which gets the type_info that corresponds to the supplie...
CallExpr - Represents a function call (C99 6.5.2.2, C++ [expr.call]).
QualType getCallReturnType(const ASTContext &Ctx) const
getCallReturnType - Get the return type of the call expr.
CastExpr - Base class for type casts, including both implicit casts (ImplicitCastExpr) and explicit c...
CastKind getCastKind() const
CharUnits - This is an opaque type for sizes expressed in character units.
llvm::Align getAsAlign() const
getAsAlign - Returns Quantity as a valid llvm::Align, Beware llvm::Align assumes power of two 8-bit b...
QuantityType getQuantity() const
getQuantity - Get the raw integer representation of this quantity.
static CharUnits One()
One - Construct a CharUnits quantity of one.
CharUnits alignmentOfArrayElement(CharUnits elementSize) const
Given that this is the alignment of the first element of an array, return the minimum alignment of an...
static CharUnits fromQuantity(QuantityType Quantity)
fromQuantity - Construct a CharUnits quantity from a raw integer type.
static CharUnits Zero()
Zero - Construct a CharUnits quantity of zero.
ChooseExpr - GNU builtin-in function __builtin_choose_expr.
Expr * getChosenSubExpr() const
getChosenSubExpr - Return the subexpression chosen according to the condition.
Represents a 'co_await' expression.
CharUnits getAlignment() const
Return the alignment of this pointer.
llvm::Type * getElementType() const
Return the type of the values stored in this address.
Address withElementType(llvm::Type *ElemTy) const
Return address with different element type, but same pointer and alignment.
llvm::Value * getPointer() const
llvm::PointerType * getType() const
Return the type of the pointer value.
void setVolatile(bool flag)
static AggValueSlot ignored()
ignored - Returns an aggregate value slot indicating that the aggregate value is being ignored.
Address getAddress() const
CharUnits getPreferredSize(ASTContext &Ctx, QualType Type) const
Get the preferred size to use when storing a value to this slot.
static AggValueSlot forLValue(const LValue &LV, CodeGenFunction &CGF, IsDestructed_t isDestructed, NeedsGCBarriers_t needsGC, IsAliased_t isAliased, Overlap_t mayOverlap, IsZeroed_t isZeroed=IsNotZeroed, IsSanitizerChecked_t isChecked=IsNotSanitizerChecked)
NeedsGCBarriers_t requiresGCollection() const
void setExternallyDestructed(bool destructed=true)
void setZeroed(bool V=true)
llvm::Value * getPointer() const
IsZeroed_t isZeroed() const
Qualifiers getQualifiers() const
IsAliased_t isPotentiallyAliased() const
static AggValueSlot forAddr(Address addr, Qualifiers quals, IsDestructed_t isDestructed, NeedsGCBarriers_t needsGC, IsAliased_t isAliased, Overlap_t mayOverlap, IsZeroed_t isZeroed=IsNotZeroed, IsSanitizerChecked_t isChecked=IsNotSanitizerChecked)
forAddr - Make a slot for an aggregate value.
IsDestructed_t isExternallyDestructed() const
Overlap_t mayOverlap() const
A scoped helper to set the current debug location to the specified location or preferred location of ...
llvm::CallInst * CreateMemSet(Address Dest, llvm::Value *Value, llvm::Value *Size, bool IsVolatile=false)
Address CreateStructGEP(Address Addr, unsigned Index, const llvm::Twine &Name="")
llvm::CallInst * CreateMemCpy(Address Dest, Address Src, llvm::Value *Size, bool IsVolatile=false)
llvm::LoadInst * CreateAlignedLoad(llvm::Type *Ty, llvm::Value *Addr, CharUnits Align, const llvm::Twine &Name="")
virtual llvm::Value * EmitMemberPointerComparison(CodeGenFunction &CGF, llvm::Value *L, llvm::Value *R, const MemberPointerType *MPT, bool Inequality)
Emit a comparison between two member pointers. Returns an i1.
virtual void EmitGCMemmoveCollectable(CodeGen::CodeGenFunction &CGF, Address DestPtr, Address SrcPtr, llvm::Value *Size)=0
CodeGenFunction - This class organizes the per-function state that is used while generating LLVM code...
void EmitNullInitialization(Address DestPtr, QualType Ty)
EmitNullInitialization - Generate code to set a value of the given type to null, If the type contains...
llvm::Value * EmitLifetimeStart(llvm::TypeSize Size, llvm::Value *Addr)
void DeactivateCleanupBlock(EHScopeStack::stable_iterator Cleanup, llvm::Instruction *DominatingIP)
DeactivateCleanupBlock - Deactivates the given cleanup block.
static TypeEvaluationKind getEvaluationKind(QualType T)
getEvaluationKind - Return the TypeEvaluationKind of QualType T.
LValue getOrCreateOpaqueLValueMapping(const OpaqueValueExpr *e)
Given an opaque value expression, return its LValue mapping if it exists, otherwise create one.
LValue EmitAggExprToLValue(const Expr *E)
EmitAggExprToLValue - Emit the computation of the specified expression of aggregate type into a tempo...
void EmitLifetimeEnd(llvm::Value *Size, llvm::Value *Addr)
void EmitStoreThroughLValue(RValue Src, LValue Dst, bool isInit=false)
EmitStoreThroughLValue - Store the specified rvalue into the specified lvalue, where both are guarant...
void pushLifetimeExtendedDestroy(CleanupKind kind, Address addr, QualType type, Destroyer *destroyer, bool useEHCleanupForArray)
static bool hasScalarEvaluationKind(QualType T)
void pushIrregularPartialArrayCleanup(llvm::Value *arrayBegin, Address arrayEndPointer, QualType elementType, CharUnits elementAlignment, Destroyer *destroyer)
llvm::Value * emitArrayLength(const ArrayType *arrayType, QualType &baseType, Address &addr)
emitArrayLength - Compute the length of an array, even if it's a VLA, and drill down to the base elem...
AggValueSlot::Overlap_t getOverlapForBaseInit(const CXXRecordDecl *RD, const CXXRecordDecl *BaseRD, bool IsVirtual)
Determine whether a base class initialization may overlap some other object.
LValue EmitLValue(const Expr *E, KnownNonNull_t IsKnownNonNull=NotKnownNonNull)
EmitLValue - Emit code to compute a designator that specifies the location of the expression.
RValue EmitAtomicLoad(LValue LV, SourceLocation SL, AggValueSlot Slot=AggValueSlot::ignored())
bool hasVolatileMember(QualType T)
hasVolatileMember - returns true if aggregate type has a volatile member.
void callCStructCopyAssignmentOperator(LValue Dst, LValue Src)
void callCStructMoveConstructor(LValue Dst, LValue Src)
void callCStructCopyConstructor(LValue Dst, LValue Src)
llvm::BasicBlock * createBasicBlock(const Twine &name="", llvm::Function *parent=nullptr, llvm::BasicBlock *before=nullptr)
createBasicBlock - Create an LLVM basic block.
const LangOptions & getLangOpts() const
LValue EmitLValueForFieldInitialization(LValue Base, const FieldDecl *Field)
EmitLValueForFieldInitialization - Like EmitLValueForField, except that if the Field is a reference,...
void EmitBlock(llvm::BasicBlock *BB, bool IsFinished=false)
EmitBlock - Emit the given block.
llvm::AllocaInst * CreateTempAlloca(llvm::Type *Ty, const Twine &Name="tmp", llvm::Value *ArraySize=nullptr)
CreateTempAlloca - This creates an alloca and inserts it into the entry block if ArraySize is nullptr...
void EmitInheritedCXXConstructorCall(const CXXConstructorDecl *D, bool ForVirtualBase, Address This, bool InheritedFromVBase, const CXXInheritedCtorInitExpr *E)
Emit a call to a constructor inherited from a base class, passing the current constructor's arguments...
RValue EmitObjCMessageExpr(const ObjCMessageExpr *E, ReturnValueSlot Return=ReturnValueSlot())
void EmitIgnoredExpr(const Expr *E)
EmitIgnoredExpr - Emit an expression in a context which ignores the result.
llvm::Type * ConvertTypeForMem(QualType T)
void EmitScalarInit(const Expr *init, const ValueDecl *D, LValue lvalue, bool capturedByInit)
LValue EmitCheckedLValue(const Expr *E, TypeCheckKind TCK)
Same as EmitLValue but additionally we generate checking code to guard against undefined behavior.
void EmitBranchOnBoolExpr(const Expr *Cond, llvm::BasicBlock *TrueBlock, llvm::BasicBlock *FalseBlock, uint64_t TrueCount, Stmt::Likelihood LH=Stmt::LH_None)
EmitBranchOnBoolExpr - Emit a branch on a boolean condition (e.g.
Destroyer * getDestroyer(QualType::DestructionKind destructionKind)
void EmitStoreThroughBitfieldLValue(RValue Src, LValue Dst, llvm::Value **Result=nullptr)
EmitStoreThroughBitfieldLValue - Store Src into Dst with same constraints as EmitStoreThroughLValue.
const TargetInfo & getTarget() const
llvm::Value * getTypeSize(QualType Ty)
Returns calculated size of the specified type.
void EmitComplexExprIntoLValue(const Expr *E, LValue dest, bool isInit)
EmitComplexExprIntoLValue - Emit the given expression of complex type and place its result into the s...
void pushFullExprCleanup(CleanupKind kind, As... A)
pushFullExprCleanup - Push a cleanup to be run at the end of the current full-expression.
RValue EmitAnyExpr(const Expr *E, AggValueSlot aggSlot=AggValueSlot::ignored(), bool ignoreResult=false)
EmitAnyExpr - Emit code to compute the specified expression which can have any type.
RValue EmitCoyieldExpr(const CoyieldExpr &E, AggValueSlot aggSlot=AggValueSlot::ignored(), bool ignoreResult=false)
bool HaveInsertPoint() const
HaveInsertPoint - True if an insertion point is defined.
void ErrorUnsupported(const Stmt *S, const char *Type)
ErrorUnsupported - Print out an error that codegen doesn't support the specified stmt yet.
AggValueSlot::Overlap_t getOverlapForFieldInit(const FieldDecl *FD)
Determine whether a field initialization may overlap some other object.
void EmitAggregateCopy(LValue Dest, LValue Src, QualType EltTy, AggValueSlot::Overlap_t MayOverlap, bool isVolatile=false)
EmitAggregateCopy - Emit an aggregate copy.
const TargetCodeGenInfo & getTargetHooks() const
RValue EmitReferenceBindingToExpr(const Expr *E)
Emits a reference binding to the passed in expression.
void EmitAggExpr(const Expr *E, AggValueSlot AS)
EmitAggExpr - Emit the computation of the specified expression of aggregate type.
Address EmitCompoundStmt(const CompoundStmt &S, bool GetLast=false, AggValueSlot AVS=AggValueSlot::ignored())
void EmitCXXTemporary(const CXXTemporary *Temporary, QualType TempType, Address Ptr)
void EmitAggregateStore(llvm::Value *Val, Address Dest, bool DestIsVolatile)
Build all the stores needed to initialize an aggregate at Dest with the value Val.
RValue EmitPseudoObjectRValue(const PseudoObjectExpr *e, AggValueSlot slot=AggValueSlot::ignored())
ASTContext & getContext() const
Address CreateMemTemp(QualType T, const Twine &Name="tmp", Address *Alloca=nullptr)
CreateMemTemp - Create a temporary memory object of the given type, with appropriate alignmen and cas...
void EmitCXXThrowExpr(const CXXThrowExpr *E, bool KeepInsertionPoint=true)
void pushDestroy(QualType::DestructionKind dtorKind, Address addr, QualType type)
Address GetAddressOfDirectBaseInCompleteClass(Address Value, const CXXRecordDecl *Derived, const CXXRecordDecl *Base, bool BaseIsVirtual)
GetAddressOfBaseOfCompleteClass - Convert the given pointer to a complete class to the given direct b...
void callCStructMoveAssignmentOperator(LValue Dst, LValue Src)
bool needsEHCleanup(QualType::DestructionKind kind)
Determines whether an EH cleanup is required to destroy a type with the given destruction kind.
CleanupKind getCleanupKind(QualType::DestructionKind kind)
void EmitCXXConstructExpr(const CXXConstructExpr *E, AggValueSlot Dest)
llvm::Type * ConvertType(QualType T)
Address EmitVAArg(VAArgExpr *VE, Address &VAListAddr)
Generate code to get an argument from the passed in pointer and update it accordingly.
CodeGenTypes & getTypes() const
RValue EmitCoawaitExpr(const CoawaitExpr &E, AggValueSlot aggSlot=AggValueSlot::ignored(), bool ignoreResult=false)
llvm::Value * EmitDynamicCast(Address V, const CXXDynamicCastExpr *DCE)
uint64_t getProfileCount(const Stmt *S)
Get the profiler's count for the given statement.
LValue EmitPseudoObjectLValue(const PseudoObjectExpr *e)
static bool hasAggregateEvaluationKind(QualType T)
LValue MakeAddrLValue(Address Addr, QualType T, AlignmentSource Source=AlignmentSource::Type)
void EmitLambdaVLACapture(const VariableArrayType *VAT, LValue LV)
void EmitAtomicStore(RValue rvalue, LValue lvalue, bool isInit)
AggValueSlot CreateAggTemp(QualType T, const Twine &Name="tmp", Address *Alloca=nullptr)
CreateAggTemp - Create a temporary memory object for the given aggregate type.
RValue EmitCallExpr(const CallExpr *E, ReturnValueSlot ReturnValue=ReturnValueSlot())
llvm::Value * EmitScalarExpr(const Expr *E, bool IgnoreResultAssign=false)
EmitScalarExpr - Emit the computation of the specified expression of LLVM scalar type,...
bool LValueIsSuitableForInlineAtomic(LValue Src)
void incrementProfileCounter(const Stmt *S, llvm::Value *StepV=nullptr)
Increment the profiler's counter for the given statement by StepV.
void pushRegularPartialArrayCleanup(llvm::Value *arrayBegin, llvm::Value *arrayEnd, QualType elementType, CharUnits elementAlignment, Destroyer *destroyer)
void EmitStoreOfScalar(llvm::Value *Value, Address Addr, bool Volatile, QualType Ty, AlignmentSource Source=AlignmentSource::Type, bool isInit=false, bool isNontemporal=false)
EmitStoreOfScalar - Store a scalar value to an address, taking care to appropriately convert from the...
RValue EmitAtomicExpr(AtomicExpr *E)
LValue EmitPointerToDataMemberBinaryExpr(const BinaryOperator *E)
This class organizes the cross-function state that is used while generating LLVM code.
void EmitExplicitCastExprType(const ExplicitCastExpr *E, CodeGenFunction *CGF=nullptr)
Emit type info if type of an expression is a variably modified type.
llvm::MDNode * getTBAAStructInfo(QualType QTy)
llvm::Module & getModule() const
bool isPaddedAtomicType(QualType type)
void ErrorUnsupported(const Stmt *S, const char *Type)
Print out an error that codegen doesn't support the specified stmt yet.
TBAAAccessInfo mergeTBAAInfoForMemoryTransfer(TBAAAccessInfo DestInfo, TBAAAccessInfo SrcInfo)
mergeTBAAInfoForMemoryTransfer - Get merged TBAA information for the purposes of memory transfer call...
const LangOptions & getLangOpts() const
const llvm::DataLayout & getDataLayout() const
CGCXXABI & getCXXABI() const
void DecorateInstructionWithTBAA(llvm::Instruction *Inst, TBAAAccessInfo TBAAInfo)
DecorateInstructionWithTBAA - Decorate the instruction with a TBAA tag.
ASTContext & getContext() const
const CodeGenOptions & getCodeGenOpts() const
CGObjCRuntime & getObjCRuntime()
Return a reference to the configured Objective-C runtime.
llvm::Constant * EmitNullConstant(QualType T)
Return the result of value-initializing the given type, i.e.
bool isPointerZeroInitializable(QualType T)
Check if the pointer type can be zero-initialized (in the C++ sense) with an LLVM zeroinitializer.
bool isZeroInitializable(QualType T)
IsZeroInitializable - Return whether a type can be zero-initialized (in the C++ sense) with an LLVM z...
A saved depth on the scope stack.
stable_iterator stable_begin() const
Create a stable reference to the top of the EH stack.
LValue - This represents an lvalue references.
Address getAddress(CodeGenFunction &CGF) const
llvm::Value * getPointer(CodeGenFunction &CGF) const
TBAAAccessInfo getTBAAInfo() const
void setNonGC(bool Value)
RValue - This trivial value class is used to represent the result of an expression that is evaluated.
static RValue get(llvm::Value *V)
llvm::Value * getAggregatePointer() const
static RValue getAggregate(Address addr, bool isVolatile=false)
Address getAggregateAddress() const
getAggregateAddr() - Return the Value* of the address of the aggregate.
llvm::Value * getScalarVal() const
getScalarVal() - Return the Value* of this scalar value.
std::pair< llvm::Value *, llvm::Value * > getComplexVal() const
getComplexVal - Return the real/imag components of this complex value.
ReturnValueSlot - Contains the address where the return value of a function can be stored,...
const ComparisonCategoryInfo & getInfoForType(QualType Ty) const
Return the comparison category information as specified by getCategoryForType(Ty).
bool isPartial() const
True iff the comparison is not totally ordered.
const ValueInfo * getLess() const
const ValueInfo * getUnordered() const
const CXXRecordDecl * Record
The declaration for the comparison category type from the standard library.
const ValueInfo * getGreater() const
const ValueInfo * getEqualOrEquiv() const
Complex values, per C99 6.2.5p11.
CompoundLiteralExpr - [C99 6.5.2.5].
const Expr * getInitializer() const
Represents the canonical version of C arrays with a specified constant size.
ConstantExpr - An expression that occurs in a constant context and optionally the result of evaluatin...
Represents a 'co_yield' expression.
specific_decl_iterator - Iterates over a subrange of declarations stored in a DeclContext,...
A reference to a declared variable, function, enum, etc.
InitListExpr * getUpdater() const
Represents an expression – generally a full-expression – that introduces cleanups to be run at the en...
This represents one expression.
Expr * IgnoreParenNoopCasts(const ASTContext &Ctx) LLVM_READONLY
Skip past any parentheses and casts which do not change the value (including ptr->int casts of the sa...
Expr * IgnoreParens() LLVM_READONLY
Skip past any parentheses which might surround this expression until reaching a fixed point.
bool HasSideEffects(const ASTContext &Ctx, bool IncludePossibleEffects=true) const
HasSideEffects - This routine returns true for all those expressions which have any effect other than...
SourceLocation getExprLoc() const LLVM_READONLY
getExprLoc - Return the preferred location for the arrow when diagnosing a problem with a generic exp...
Represents a member of a struct/union/class.
unsigned getFieldIndex() const
Returns the index of this field within its record, as appropriate for passing to ASTRecordLayout::get...
const RecordDecl * getParent() const
Returns the parent of this field declaration, which is the struct in which this field is defined.
const Expr * getSubExpr() const
Represents a C11 generic selection.
Represents an implicitly-generated value initialization of an object of a given type.
Describes an C or C++ initializer list.
bool isTransparent() const
Is this a transparent initializer list (that is, an InitListExpr that is purely syntactic,...
FieldDecl * getInitializedFieldInUnion()
If this initializes a union, specifies which field in the union to initialize.
unsigned getNumInits() const
bool hadArrayRangeDesignator() const
Expr * getArrayFiller()
If this initializer list initializes an array with more elements than there are initializers in the l...
const Expr * getInit(unsigned Init) const
ArrayRef< Expr * > inits()
A C++ lambda expression, which produces a function object (of unspecified type) that can be invoked l...
capture_init_iterator capture_init_end()
Retrieve the iterator pointing one past the last initialization argument for this lambda expression.
Expr *const * const_capture_init_iterator
Const iterator that walks over the capture initialization arguments.
capture_init_iterator capture_init_begin()
Retrieve the first initialization argument for this lambda expression (which initializes the first ca...
CXXRecordDecl * getLambdaClass() const
Retrieve the class that corresponds to the lambda.
Represents a prvalue temporary that is written into memory so that a reference can bind to it.
Expr * getSubExpr() const
Retrieve the temporary-generating subexpression whose value will be materialized into a glvalue.
MemberExpr - [C99 6.5.2.3] Structure and Union Members.
A pointer to member type per C++ 8.3.3 - Pointers to members.
Represents a place-holder for an object not to be initialized by anything.
ObjCIvarRefExpr - A reference to an ObjC instance variable.
An expression that sends a message to the given Objective-C object or class.
OpaqueValueExpr - An expression referring to an opaque object of a fixed type and value class.
Expr * getSourceExpr() const
The source expression of an opaque value expression is the expression which originally generated the ...
ParenExpr - This represents a parethesized expression, e.g.
const Expr * getSubExpr() const
[C99 6.4.2.2] - A predefined identifier such as func.
PseudoObjectExpr - An expression which accesses a pseudo-object l-value.
A (possibly-)qualified type.
bool isVolatileQualified() const
Determine whether this type is volatile-qualified.
bool isTriviallyCopyableType(const ASTContext &Context) const
Return true if this is a trivially copyable type (C++0x [basic.types]p9)
LangAS getAddressSpace() const
Return the address space of this type.
DestructionKind isDestructedType() const
Returns a nonzero value if objects of this type require non-trivial work to clean up after.
bool isPODType(const ASTContext &Context) const
Determine whether this is a Plain Old Data (POD) type (C++ 3.9p10).
@ PCK_Struct
The type is a struct containing a field whose type is neither PCK_Trivial nor PCK_VolatileTrivial.
The collection of all-type qualifiers we support.
Represents a struct/union/class.
bool hasObjectMember() const
field_range fields() const
field_iterator field_begin() const
A helper class that allows the use of isa/cast/dyncast to detect TagType objects of structs/unions/cl...
RecordDecl * getDecl() const
Scope - A scope is a transient data structure that is used while parsing the program.
StmtExpr - This is the GNU Statement Expression extension: ({int X=4; X;}).
CompoundStmt * getSubStmt()
RetTy Visit(PTR(Stmt) S, ParamTys... P)
StmtVisitor - This class implements a simple visitor for Stmt subclasses.
Stmt - This represents one statement.
StringLiteral - This represents a string literal expression, e.g.
Represents a reference to a non-type template parameter that has been substituted with a template arg...
Expr * getReplacement() const
uint64_t getPointerWidth(LangAS AddrSpace) const
Return the width of pointers on this target, for the specified address space.
bool isConstantArrayType() const
bool isPointerType() const
const T * castAs() const
Member-template castAs<specific type>.
bool isReferenceType() const
bool isVariableArrayType() const
bool isCUDADeviceBuiltinSurfaceType() const
Check if the type is the CUDA device builtin surface type.
bool isIntegralOrEnumerationType() const
Determine whether this type is an integral or enumeration type.
bool isAnyComplexType() const
bool hasSignedIntegerRepresentation() const
Determine whether this type has an signed integer representation of some sort, e.g....
bool isMemberPointerType() const
bool isAtomicType() const
bool isCUDADeviceBuiltinTextureType() const
Check if the type is the CUDA device builtin texture type.
bool hasFloatingRepresentation() const
Determine whether this type has a floating-point representation of some sort, e.g....
bool isRealFloatingType() const
Floating point categories.
const T * getAs() const
Member-template getAs<specific type>'.
bool isNullPtrType() const
bool isRecordType() const
UnaryOperator - This represents the unary-expression's (except sizeof and alignof),...
Expr * getSubExpr() const
Represents a call to the builtin function __builtin_va_arg.
Represents a variable declaration or definition.
@ EHCleanup
Denotes a cleanup that should run when a scope is exited using exceptional control flow (a throw stat...
const internal::VariadicAllOfMatcher< Type > type
Matches Types in the clang AST.
const AstTypeMatcher< AtomicType > atomicType
Matches atomic types.
bool Zero(InterpState &S, CodePtr OpPC)
bool GE(InterpState &S, CodePtr OpPC)
@ C
Languages that the frontend can parse and compile.
LangAS
Defines the address space values used by the address space qualifier of QualType.
CastKind
CastKind - The kind of operation required for a conversion.
ExprValueKind
The categorization of expression values, currently following the C++11 scheme.
U cast(CodeGen::Address addr)
llvm::IntegerType * Int8Ty
i8, i16, i32, and i64
llvm::IntegerType * SizeTy
llvm::PointerType * Int8PtrTy
llvm::IntegerType * PtrDiffTy
CharUnits getPointerAlign() const