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-rw-r--r--lib/Analysis/ConstantFolding.cpp228
1 files changed, 139 insertions, 89 deletions
diff --git a/lib/Analysis/ConstantFolding.cpp b/lib/Analysis/ConstantFolding.cpp
index bc0dffc..3d32232 100644
--- a/lib/Analysis/ConstantFolding.cpp
+++ b/lib/Analysis/ConstantFolding.cpp
@@ -224,7 +224,8 @@ static bool IsConstantOffsetFromGlobal(Constant *C, GlobalValue *&GV,
APInt &Offset, const DataLayout &TD) {
// Trivial case, constant is the global.
if ((GV = dyn_cast<GlobalValue>(C))) {
- Offset.clearAllBits();
+ unsigned BitWidth = TD.getPointerTypeSizeInBits(GV->getType());
+ Offset = APInt(BitWidth, 0);
return true;
}
@@ -238,16 +239,23 @@ static bool IsConstantOffsetFromGlobal(Constant *C, GlobalValue *&GV,
return IsConstantOffsetFromGlobal(CE->getOperand(0), GV, Offset, TD);
// i32* getelementptr ([5 x i32]* @a, i32 0, i32 5)
- if (GEPOperator *GEP = dyn_cast<GEPOperator>(CE)) {
- // If the base isn't a global+constant, we aren't either.
- if (!IsConstantOffsetFromGlobal(CE->getOperand(0), GV, Offset, TD))
- return false;
+ GEPOperator *GEP = dyn_cast<GEPOperator>(CE);
+ if (!GEP)
+ return false;
- // Otherwise, add any offset that our operands provide.
- return GEP->accumulateConstantOffset(TD, Offset);
- }
+ unsigned BitWidth = TD.getPointerTypeSizeInBits(GEP->getType());
+ APInt TmpOffset(BitWidth, 0);
- return false;
+ // If the base isn't a global+constant, we aren't either.
+ if (!IsConstantOffsetFromGlobal(CE->getOperand(0), GV, TmpOffset, TD))
+ return false;
+
+ // Otherwise, add any offset that our operands provide.
+ if (!GEP->accumulateConstantOffset(TD, TmpOffset))
+ return false;
+
+ Offset = TmpOffset;
+ return true;
}
/// ReadDataFromGlobal - Recursive helper to read bits out of global. C is the
@@ -324,12 +332,12 @@ static bool ReadDataFromGlobal(Constant *C, uint64_t ByteOffset,
// If we read all of the bytes we needed from this element we're done.
uint64_t NextEltOffset = SL->getElementOffset(Index);
- if (BytesLeft <= NextEltOffset-CurEltOffset-ByteOffset)
+ if (BytesLeft <= NextEltOffset - CurEltOffset - ByteOffset)
return true;
// Move to the next element of the struct.
- CurPtr += NextEltOffset-CurEltOffset-ByteOffset;
- BytesLeft -= NextEltOffset-CurEltOffset-ByteOffset;
+ CurPtr += NextEltOffset - CurEltOffset - ByteOffset;
+ BytesLeft -= NextEltOffset - CurEltOffset - ByteOffset;
ByteOffset = 0;
CurEltOffset = NextEltOffset;
}
@@ -338,7 +346,7 @@ static bool ReadDataFromGlobal(Constant *C, uint64_t ByteOffset,
if (isa<ConstantArray>(C) || isa<ConstantVector>(C) ||
isa<ConstantDataSequential>(C)) {
- Type *EltTy = cast<SequentialType>(C->getType())->getElementType();
+ Type *EltTy = C->getType()->getSequentialElementType();
uint64_t EltSize = TD.getTypeAllocSize(EltTy);
uint64_t Index = ByteOffset / EltSize;
uint64_t Offset = ByteOffset - Index * EltSize;
@@ -346,7 +354,7 @@ static bool ReadDataFromGlobal(Constant *C, uint64_t ByteOffset,
if (ArrayType *AT = dyn_cast<ArrayType>(C->getType()))
NumElts = AT->getNumElements();
else
- NumElts = cast<VectorType>(C->getType())->getNumElements();
+ NumElts = C->getType()->getVectorNumElements();
for (; Index != NumElts; ++Index) {
if (!ReadDataFromGlobal(C->getAggregateElement(Index), Offset, CurPtr,
@@ -367,9 +375,10 @@ static bool ReadDataFromGlobal(Constant *C, uint64_t ByteOffset,
if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C)) {
if (CE->getOpcode() == Instruction::IntToPtr &&
- CE->getOperand(0)->getType() == TD.getIntPtrType(CE->getContext()))
+ CE->getOperand(0)->getType() == TD.getIntPtrType(CE->getType())) {
return ReadDataFromGlobal(CE->getOperand(0), ByteOffset, CurPtr,
BytesLeft, TD);
+ }
}
// Otherwise, unknown initializer type.
@@ -378,26 +387,29 @@ static bool ReadDataFromGlobal(Constant *C, uint64_t ByteOffset,
static Constant *FoldReinterpretLoadFromConstPtr(Constant *C,
const DataLayout &TD) {
- Type *LoadTy = cast<PointerType>(C->getType())->getElementType();
+ PointerType *PTy = cast<PointerType>(C->getType());
+ Type *LoadTy = PTy->getElementType();
IntegerType *IntType = dyn_cast<IntegerType>(LoadTy);
// If this isn't an integer load we can't fold it directly.
if (!IntType) {
+ unsigned AS = PTy->getAddressSpace();
+
// If this is a float/double load, we can try folding it as an int32/64 load
// and then bitcast the result. This can be useful for union cases. Note
// that address spaces don't matter here since we're not going to result in
// an actual new load.
Type *MapTy;
if (LoadTy->isHalfTy())
- MapTy = Type::getInt16PtrTy(C->getContext());
+ MapTy = Type::getInt16PtrTy(C->getContext(), AS);
else if (LoadTy->isFloatTy())
- MapTy = Type::getInt32PtrTy(C->getContext());
+ MapTy = Type::getInt32PtrTy(C->getContext(), AS);
else if (LoadTy->isDoubleTy())
- MapTy = Type::getInt64PtrTy(C->getContext());
+ MapTy = Type::getInt64PtrTy(C->getContext(), AS);
else if (LoadTy->isVectorTy()) {
- MapTy = IntegerType::get(C->getContext(),
- TD.getTypeAllocSizeInBits(LoadTy));
- MapTy = PointerType::getUnqual(MapTy);
+ MapTy = PointerType::getIntNPtrTy(C->getContext(),
+ TD.getTypeAllocSizeInBits(LoadTy),
+ AS);
} else
return 0;
@@ -408,10 +420,11 @@ static Constant *FoldReinterpretLoadFromConstPtr(Constant *C,
}
unsigned BytesLoaded = (IntType->getBitWidth() + 7) / 8;
- if (BytesLoaded > 32 || BytesLoaded == 0) return 0;
+ if (BytesLoaded > 32 || BytesLoaded == 0)
+ return 0;
GlobalValue *GVal;
- APInt Offset(TD.getPointerSizeInBits(), 0);
+ APInt Offset;
if (!IsConstantOffsetFromGlobal(C, GVal, Offset, TD))
return 0;
@@ -422,7 +435,8 @@ static Constant *FoldReinterpretLoadFromConstPtr(Constant *C,
// If we're loading off the beginning of the global, some bytes may be valid,
// but we don't try to handle this.
- if (Offset.isNegative()) return 0;
+ if (Offset.isNegative())
+ return 0;
// If we're not accessing anything in this constant, the result is undefined.
if (Offset.getZExtValue() >=
@@ -439,7 +453,7 @@ static Constant *FoldReinterpretLoadFromConstPtr(Constant *C,
ResultVal = RawBytes[BytesLoaded - 1];
for (unsigned i = 1; i != BytesLoaded; ++i) {
ResultVal <<= 8;
- ResultVal |= RawBytes[BytesLoaded-1-i];
+ ResultVal |= RawBytes[BytesLoaded - 1 - i];
}
} else {
ResultVal = RawBytes[0];
@@ -464,14 +478,17 @@ Constant *llvm::ConstantFoldLoadFromConstPtr(Constant *C,
// If the loaded value isn't a constant expr, we can't handle it.
ConstantExpr *CE = dyn_cast<ConstantExpr>(C);
- if (!CE) return 0;
+ if (!CE)
+ return 0;
if (CE->getOpcode() == Instruction::GetElementPtr) {
- if (GlobalVariable *GV = dyn_cast<GlobalVariable>(CE->getOperand(0)))
- if (GV->isConstant() && GV->hasDefinitiveInitializer())
+ if (GlobalVariable *GV = dyn_cast<GlobalVariable>(CE->getOperand(0))) {
+ if (GV->isConstant() && GV->hasDefinitiveInitializer()) {
if (Constant *V =
ConstantFoldLoadThroughGEPConstantExpr(GV->getInitializer(), CE))
return V;
+ }
+ }
}
// Instead of loading constant c string, use corresponding integer value
@@ -576,13 +593,13 @@ static Constant *SymbolicallyEvaluateBinop(unsigned Opc, Constant *Op0,
// constant. This happens frequently when iterating over a global array.
if (Opc == Instruction::Sub && DL) {
GlobalValue *GV1, *GV2;
- unsigned PtrSize = DL->getPointerSizeInBits();
- unsigned OpSize = DL->getTypeSizeInBits(Op0->getType());
- APInt Offs1(PtrSize, 0), Offs2(PtrSize, 0);
+ APInt Offs1, Offs2;
if (IsConstantOffsetFromGlobal(Op0, GV1, Offs1, *DL))
if (IsConstantOffsetFromGlobal(Op1, GV2, Offs2, *DL) &&
GV1 == GV2) {
+ unsigned OpSize = DL->getTypeSizeInBits(Op0->getType());
+
// (&GV+C1) - (&GV+C2) -> C1-C2, pointer arithmetic cannot overflow.
// PtrToInt may change the bitwidth so we have convert to the right size
// first.
@@ -600,15 +617,18 @@ static Constant *SymbolicallyEvaluateBinop(unsigned Opc, Constant *Op0,
static Constant *CastGEPIndices(ArrayRef<Constant *> Ops,
Type *ResultTy, const DataLayout *TD,
const TargetLibraryInfo *TLI) {
- if (!TD) return 0;
- Type *IntPtrTy = TD->getIntPtrType(ResultTy->getContext());
+ if (!TD)
+ return 0;
+
+ Type *IntPtrTy = TD->getIntPtrType(ResultTy);
bool Any = false;
SmallVector<Constant*, 32> NewIdxs;
for (unsigned i = 1, e = Ops.size(); i != e; ++i) {
if ((i == 1 ||
- !isa<StructType>(GetElementPtrInst::getIndexedType(Ops[0]->getType(),
- Ops.slice(1, i-1)))) &&
+ !isa<StructType>(GetElementPtrInst::getIndexedType(
+ Ops[0]->getType(),
+ Ops.slice(1, i - 1)))) &&
Ops[i]->getType() != IntPtrTy) {
Any = true;
NewIdxs.push_back(ConstantExpr::getCast(CastInst::getCastOpcode(Ops[i],
@@ -619,13 +639,16 @@ static Constant *CastGEPIndices(ArrayRef<Constant *> Ops,
} else
NewIdxs.push_back(Ops[i]);
}
- if (!Any) return 0;
- Constant *C =
- ConstantExpr::getGetElementPtr(Ops[0], NewIdxs);
- if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C))
+ if (!Any)
+ return 0;
+
+ Constant *C = ConstantExpr::getGetElementPtr(Ops[0], NewIdxs);
+ if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C)) {
if (Constant *Folded = ConstantFoldConstantExpression(CE, TD, TLI))
C = Folded;
+ }
+
return C;
}
@@ -640,7 +663,7 @@ static Constant* StripPtrCastKeepAS(Constant* Ptr) {
if (NewPtrTy->getAddressSpace() != OldPtrTy->getAddressSpace()) {
NewPtrTy = NewPtrTy->getElementType()->getPointerTo(
OldPtrTy->getAddressSpace());
- Ptr = ConstantExpr::getBitCast(Ptr, NewPtrTy);
+ Ptr = ConstantExpr::getPointerCast(Ptr, NewPtrTy);
}
return Ptr;
}
@@ -651,11 +674,12 @@ static Constant *SymbolicallyEvaluateGEP(ArrayRef<Constant *> Ops,
Type *ResultTy, const DataLayout *TD,
const TargetLibraryInfo *TLI) {
Constant *Ptr = Ops[0];
- if (!TD || !cast<PointerType>(Ptr->getType())->getElementType()->isSized() ||
+ if (!TD || !Ptr->getType()->getPointerElementType()->isSized() ||
!Ptr->getType()->isPointerTy())
return 0;
- Type *IntPtrTy = TD->getIntPtrType(Ptr->getContext());
+ Type *IntPtrTy = TD->getIntPtrType(Ptr->getType());
+ Type *ResultElementTy = ResultTy->getPointerElementType();
// If this is a constant expr gep that is effectively computing an
// "offsetof", fold it into 'cast int Size to T*' instead of 'gep 0, 0, 12'
@@ -664,8 +688,7 @@ static Constant *SymbolicallyEvaluateGEP(ArrayRef<Constant *> Ops,
// If this is "gep i8* Ptr, (sub 0, V)", fold this as:
// "inttoptr (sub (ptrtoint Ptr), V)"
- if (Ops.size() == 2 &&
- cast<PointerType>(ResultTy)->getElementType()->isIntegerTy(8)) {
+ if (Ops.size() == 2 && ResultElementTy->isIntegerTy(8)) {
ConstantExpr *CE = dyn_cast<ConstantExpr>(Ops[1]);
assert((CE == 0 || CE->getType() == IntPtrTy) &&
"CastGEPIndices didn't canonicalize index types!");
@@ -692,7 +715,7 @@ static Constant *SymbolicallyEvaluateGEP(ArrayRef<Constant *> Ops,
// If this is a GEP of a GEP, fold it all into a single GEP.
while (GEPOperator *GEP = dyn_cast<GEPOperator>(Ptr)) {
- SmallVector<Value *, 4> NestedOps(GEP->op_begin()+1, GEP->op_end());
+ SmallVector<Value *, 4> NestedOps(GEP->op_begin() + 1, GEP->op_end());
// Do not try the incorporate the sub-GEP if some index is not a number.
bool AllConstantInt = true;
@@ -713,12 +736,15 @@ static Constant *SymbolicallyEvaluateGEP(ArrayRef<Constant *> Ops,
// If the base value for this address is a literal integer value, fold the
// getelementptr to the resulting integer value casted to the pointer type.
APInt BasePtr(BitWidth, 0);
- if (ConstantExpr *CE = dyn_cast<ConstantExpr>(Ptr))
- if (CE->getOpcode() == Instruction::IntToPtr)
+ if (ConstantExpr *CE = dyn_cast<ConstantExpr>(Ptr)) {
+ if (CE->getOpcode() == Instruction::IntToPtr) {
if (ConstantInt *Base = dyn_cast<ConstantInt>(CE->getOperand(0)))
BasePtr = Base->getValue().zextOrTrunc(BitWidth);
+ }
+ }
+
if (Ptr->isNullValue() || BasePtr != 0) {
- Constant *C = ConstantInt::get(Ptr->getContext(), Offset+BasePtr);
+ Constant *C = ConstantInt::get(Ptr->getContext(), Offset + BasePtr);
return ConstantExpr::getIntToPtr(C, ResultTy);
}
@@ -728,7 +754,8 @@ static Constant *SymbolicallyEvaluateGEP(ArrayRef<Constant *> Ops,
// Also, this helps GlobalOpt do SROA on GlobalVariables.
Type *Ty = Ptr->getType();
assert(Ty->isPointerTy() && "Forming regular GEP of non-pointer type");
- SmallVector<Constant*, 32> NewIdxs;
+ SmallVector<Constant *, 32> NewIdxs;
+
do {
if (SequentialType *ATy = dyn_cast<SequentialType>(Ty)) {
if (ATy->isPointerTy()) {
@@ -743,7 +770,6 @@ static Constant *SymbolicallyEvaluateGEP(ArrayRef<Constant *> Ops,
// Determine which element of the array the offset points into.
APInt ElemSize(BitWidth, TD->getTypeAllocSize(ATy->getElementType()));
- IntegerType *IntPtrTy = TD->getIntPtrType(Ty->getContext());
if (ElemSize == 0)
// The element size is 0. This may be [0 x Ty]*, so just use a zero
// index for this level and proceed to the next level to see if it can
@@ -778,7 +804,7 @@ static Constant *SymbolicallyEvaluateGEP(ArrayRef<Constant *> Ops,
// We've reached some non-indexable type.
break;
}
- } while (Ty != cast<PointerType>(ResultTy)->getElementType());
+ } while (Ty != ResultElementTy);
// If we haven't used up the entire offset by descending the static
// type, then the offset is pointing into the middle of an indivisible
@@ -787,14 +813,13 @@ static Constant *SymbolicallyEvaluateGEP(ArrayRef<Constant *> Ops,
return 0;
// Create a GEP.
- Constant *C =
- ConstantExpr::getGetElementPtr(Ptr, NewIdxs);
- assert(cast<PointerType>(C->getType())->getElementType() == Ty &&
+ Constant *C = ConstantExpr::getGetElementPtr(Ptr, NewIdxs);
+ assert(C->getType()->getPointerElementType() == Ty &&
"Computed GetElementPtr has unexpected type!");
// If we ended up indexing a member with a type that doesn't match
// the type of what the original indices indexed, add a cast.
- if (Ty != cast<PointerType>(ResultTy)->getElementType())
+ if (Ty != ResultElementTy)
C = FoldBitCast(C, ResultTy, *TD);
return C;
@@ -867,16 +892,18 @@ Constant *llvm::ConstantFoldInstruction(Instruction *I,
if (const LoadInst *LI = dyn_cast<LoadInst>(I))
return ConstantFoldLoadInst(LI, TD);
- if (InsertValueInst *IVI = dyn_cast<InsertValueInst>(I))
+ if (InsertValueInst *IVI = dyn_cast<InsertValueInst>(I)) {
return ConstantExpr::getInsertValue(
cast<Constant>(IVI->getAggregateOperand()),
cast<Constant>(IVI->getInsertedValueOperand()),
IVI->getIndices());
+ }
- if (ExtractValueInst *EVI = dyn_cast<ExtractValueInst>(I))
+ if (ExtractValueInst *EVI = dyn_cast<ExtractValueInst>(I)) {
return ConstantExpr::getExtractValue(
cast<Constant>(EVI->getAggregateOperand()),
EVI->getIndices());
+ }
return ConstantFoldInstOperands(I->getOpcode(), I->getType(), Ops, TD, TLI);
}
@@ -930,9 +957,10 @@ Constant *llvm::ConstantFoldInstOperands(unsigned Opcode, Type *DestTy,
const TargetLibraryInfo *TLI) {
// Handle easy binops first.
if (Instruction::isBinaryOp(Opcode)) {
- if (isa<ConstantExpr>(Ops[0]) || isa<ConstantExpr>(Ops[1]))
+ if (isa<ConstantExpr>(Ops[0]) || isa<ConstantExpr>(Ops[1])) {
if (Constant *C = SymbolicallyEvaluateBinop(Opcode, Ops[0], Ops[1], TD))
return C;
+ }
return ConstantExpr::get(Opcode, Ops[0], Ops[1]);
}
@@ -953,10 +981,11 @@ Constant *llvm::ConstantFoldInstOperands(unsigned Opcode, Type *DestTy,
if (TD && CE->getOpcode() == Instruction::IntToPtr) {
Constant *Input = CE->getOperand(0);
unsigned InWidth = Input->getType()->getScalarSizeInBits();
- if (TD->getPointerSizeInBits() < InWidth) {
+ unsigned PtrWidth = TD->getPointerTypeSizeInBits(CE->getType());
+ if (PtrWidth < InWidth) {
Constant *Mask =
- ConstantInt::get(CE->getContext(), APInt::getLowBitsSet(InWidth,
- TD->getPointerSizeInBits()));
+ ConstantInt::get(CE->getContext(),
+ APInt::getLowBitsSet(InWidth, PtrWidth));
Input = ConstantExpr::getAnd(Input, Mask);
}
// Do a zext or trunc to get to the dest size.
@@ -966,13 +995,22 @@ Constant *llvm::ConstantFoldInstOperands(unsigned Opcode, Type *DestTy,
return ConstantExpr::getCast(Opcode, Ops[0], DestTy);
case Instruction::IntToPtr:
// If the input is a ptrtoint, turn the pair into a ptr to ptr bitcast if
- // the int size is >= the ptr size. This requires knowing the width of a
- // pointer, so it can't be done in ConstantExpr::getCast.
- if (ConstantExpr *CE = dyn_cast<ConstantExpr>(Ops[0]))
- if (TD &&
- TD->getPointerSizeInBits() <= CE->getType()->getScalarSizeInBits() &&
- CE->getOpcode() == Instruction::PtrToInt)
- return FoldBitCast(CE->getOperand(0), DestTy, *TD);
+ // the int size is >= the ptr size and the address spaces are the same.
+ // This requires knowing the width of a pointer, so it can't be done in
+ // ConstantExpr::getCast.
+ if (ConstantExpr *CE = dyn_cast<ConstantExpr>(Ops[0])) {
+ if (TD && CE->getOpcode() == Instruction::PtrToInt) {
+ Constant *SrcPtr = CE->getOperand(0);
+ unsigned SrcPtrSize = TD->getPointerTypeSizeInBits(SrcPtr->getType());
+ unsigned MidIntSize = CE->getType()->getScalarSizeInBits();
+
+ if (MidIntSize >= SrcPtrSize) {
+ unsigned SrcAS = SrcPtr->getType()->getPointerAddressSpace();
+ if (SrcAS == DestTy->getPointerAddressSpace())
+ return FoldBitCast(CE->getOperand(0), DestTy, *TD);
+ }
+ }
+ }
return ConstantExpr::getCast(Opcode, Ops[0], DestTy);
case Instruction::Trunc:
@@ -984,6 +1022,7 @@ Constant *llvm::ConstantFoldInstOperands(unsigned Opcode, Type *DestTy,
case Instruction::SIToFP:
case Instruction::FPToUI:
case Instruction::FPToSI:
+ case Instruction::AddrSpaceCast:
return ConstantExpr::getCast(Opcode, Ops[0], DestTy);
case Instruction::BitCast:
if (TD)
@@ -1024,8 +1063,8 @@ Constant *llvm::ConstantFoldCompareInstOperands(unsigned Predicate,
// around to know if bit truncation is happening.
if (ConstantExpr *CE0 = dyn_cast<ConstantExpr>(Ops0)) {
if (TD && Ops1->isNullValue()) {
- Type *IntPtrTy = TD->getIntPtrType(CE0->getContext());
if (CE0->getOpcode() == Instruction::IntToPtr) {
+ Type *IntPtrTy = TD->getIntPtrType(CE0->getType());
// Convert the integer value to the right size to ensure we get the
// proper extension or truncation.
Constant *C = ConstantExpr::getIntegerCast(CE0->getOperand(0),
@@ -1036,19 +1075,21 @@ Constant *llvm::ConstantFoldCompareInstOperands(unsigned Predicate,
// Only do this transformation if the int is intptrty in size, otherwise
// there is a truncation or extension that we aren't modeling.
- if (CE0->getOpcode() == Instruction::PtrToInt &&
- CE0->getType() == IntPtrTy) {
- Constant *C = CE0->getOperand(0);
- Constant *Null = Constant::getNullValue(C->getType());
- return ConstantFoldCompareInstOperands(Predicate, C, Null, TD, TLI);
+ if (CE0->getOpcode() == Instruction::PtrToInt) {
+ Type *IntPtrTy = TD->getIntPtrType(CE0->getOperand(0)->getType());
+ if (CE0->getType() == IntPtrTy) {
+ Constant *C = CE0->getOperand(0);
+ Constant *Null = Constant::getNullValue(C->getType());
+ return ConstantFoldCompareInstOperands(Predicate, C, Null, TD, TLI);
+ }
}
}
if (ConstantExpr *CE1 = dyn_cast<ConstantExpr>(Ops1)) {
if (TD && CE0->getOpcode() == CE1->getOpcode()) {
- Type *IntPtrTy = TD->getIntPtrType(CE0->getContext());
-
if (CE0->getOpcode() == Instruction::IntToPtr) {
+ Type *IntPtrTy = TD->getIntPtrType(CE0->getType());
+
// Convert the integer value to the right size to ensure we get the
// proper extension or truncation.
Constant *C0 = ConstantExpr::getIntegerCast(CE0->getOperand(0),
@@ -1060,11 +1101,17 @@ Constant *llvm::ConstantFoldCompareInstOperands(unsigned Predicate,
// Only do this transformation if the int is intptrty in size, otherwise
// there is a truncation or extension that we aren't modeling.
- if ((CE0->getOpcode() == Instruction::PtrToInt &&
- CE0->getType() == IntPtrTy &&
- CE0->getOperand(0)->getType() == CE1->getOperand(0)->getType()))
- return ConstantFoldCompareInstOperands(Predicate, CE0->getOperand(0),
- CE1->getOperand(0), TD, TLI);
+ if (CE0->getOpcode() == Instruction::PtrToInt) {
+ Type *IntPtrTy = TD->getIntPtrType(CE0->getOperand(0)->getType());
+ if (CE0->getType() == IntPtrTy &&
+ CE0->getOperand(0)->getType() == CE1->getOperand(0)->getType()) {
+ return ConstantFoldCompareInstOperands(Predicate,
+ CE0->getOperand(0),
+ CE1->getOperand(0),
+ TD,
+ TLI);
+ }
+ }
}
}
@@ -1101,7 +1148,8 @@ Constant *llvm::ConstantFoldLoadThroughGEPConstantExpr(Constant *C,
// addressing.
for (unsigned i = 2, e = CE->getNumOperands(); i != e; ++i) {
C = C->getAggregateElement(CE->getOperand(i));
- if (C == 0) return 0;
+ if (C == 0)
+ return 0;
}
return C;
}
@@ -1116,7 +1164,8 @@ Constant *llvm::ConstantFoldLoadThroughGEPIndices(Constant *C,
// addressing.
for (unsigned i = 0, e = Indices.size(); i != e; ++i) {
C = C->getAggregateElement(Indices[i]);
- if (C == 0) return 0;
+ if (C == 0)
+ return 0;
}
return C;
}
@@ -1128,8 +1177,7 @@ Constant *llvm::ConstantFoldLoadThroughGEPIndices(Constant *C,
/// canConstantFoldCallTo - Return true if its even possible to fold a call to
/// the specified function.
-bool
-llvm::canConstantFoldCallTo(const Function *F) {
+bool llvm::canConstantFoldCallTo(const Function *F) {
switch (F->getIntrinsicID()) {
case Intrinsic::fabs:
case Intrinsic::log:
@@ -1167,7 +1215,8 @@ llvm::canConstantFoldCallTo(const Function *F) {
case 0: break;
}
- if (!F->hasName()) return false;
+ if (!F->hasName())
+ return false;
StringRef Name = F->getName();
// In these cases, the check of the length is required. We don't want to
@@ -1250,7 +1299,7 @@ static Constant *ConstantFoldBinaryFP(double (*NativeFP)(double, double),
static Constant *ConstantFoldConvertToInt(const APFloat &Val,
bool roundTowardZero, Type *Ty) {
// All of these conversion intrinsics form an integer of at most 64bits.
- unsigned ResultWidth = cast<IntegerType>(Ty)->getBitWidth();
+ unsigned ResultWidth = Ty->getIntegerBitWidth();
assert(ResultWidth <= 64 &&
"Can only constant fold conversions to 64 and 32 bit ints");
@@ -1271,7 +1320,8 @@ static Constant *ConstantFoldConvertToInt(const APFloat &Val,
Constant *
llvm::ConstantFoldCall(Function *F, ArrayRef<Constant *> Operands,
const TargetLibraryInfo *TLI) {
- if (!F->hasName()) return 0;
+ if (!F->hasName())
+ return 0;
StringRef Name = F->getName();
Type *Ty = F->getReturnType();
generated by cgit v1.1 at 2024-05-20 18:53:50 +0000