From db125cfaf57cc83e7dd7453de2d509bc8efd0e5e Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Mon, 18 Jul 2011 04:54:35 +0000 Subject: land David Blaikie's patch to de-constify Type, with a few tweaks. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135375 91177308-0d34-0410-b5e6-96231b3b80d8 --- .../InstCombine/InstructionCombining.cpp | 34 +++++++++++----------- 1 file changed, 17 insertions(+), 17 deletions(-) (limited to 'lib/Transforms/InstCombine/InstructionCombining.cpp') diff --git a/lib/Transforms/InstCombine/InstructionCombining.cpp b/lib/Transforms/InstCombine/InstructionCombining.cpp index ab98ef9fcc..5828ec2ee9 100644 --- a/lib/Transforms/InstCombine/InstructionCombining.cpp +++ b/lib/Transforms/InstCombine/InstructionCombining.cpp @@ -83,7 +83,7 @@ void InstCombiner::getAnalysisUsage(AnalysisUsage &AU) const { /// ShouldChangeType - Return true if it is desirable to convert a computation /// from 'From' to 'To'. We don't want to convert from a legal to an illegal /// type for example, or from a smaller to a larger illegal type. -bool InstCombiner::ShouldChangeType(const Type *From, const Type *To) const { +bool InstCombiner::ShouldChangeType(Type *From, Type *To) const { assert(From->isIntegerTy() && To->isIntegerTy()); // If we don't have TD, we don't know if the source/dest are legal. @@ -516,8 +516,8 @@ Instruction *InstCombiner::FoldOpIntoSelect(Instruction &Op, SelectInst *SI) { // If it's a bitcast involving vectors, make sure it has the same number of // elements on both sides. if (BitCastInst *BC = dyn_cast(&Op)) { - const VectorType *DestTy = dyn_cast(BC->getDestTy()); - const VectorType *SrcTy = dyn_cast(BC->getSrcTy()); + VectorType *DestTy = dyn_cast(BC->getDestTy()); + VectorType *SrcTy = dyn_cast(BC->getSrcTy()); // Verify that either both or neither are vectors. if ((SrcTy == NULL) != (DestTy == NULL)) return 0; @@ -654,7 +654,7 @@ Instruction *InstCombiner::FoldOpIntoPhi(Instruction &I) { } } else { CastInst *CI = cast(&I); - const Type *RetTy = CI->getType(); + Type *RetTy = CI->getType(); for (unsigned i = 0; i != NumPHIValues; ++i) { Value *InV; if (Constant *InC = dyn_cast(PN->getIncomingValue(i))) @@ -680,7 +680,7 @@ Instruction *InstCombiner::FoldOpIntoPhi(Instruction &I) { /// or not there is a sequence of GEP indices into the type that will land us at /// the specified offset. If so, fill them into NewIndices and return the /// resultant element type, otherwise return null. -const Type *InstCombiner::FindElementAtOffset(const Type *Ty, int64_t Offset, +Type *InstCombiner::FindElementAtOffset(Type *Ty, int64_t Offset, SmallVectorImpl &NewIndices) { if (!TD) return 0; if (!Ty->isSized()) return 0; @@ -688,7 +688,7 @@ const Type *InstCombiner::FindElementAtOffset(const Type *Ty, int64_t Offset, // Start with the index over the outer type. Note that the type size // might be zero (even if the offset isn't zero) if the indexed type // is something like [0 x {int, int}] - const Type *IntPtrTy = TD->getIntPtrType(Ty->getContext()); + Type *IntPtrTy = TD->getIntPtrType(Ty->getContext()); int64_t FirstIdx = 0; if (int64_t TySize = TD->getTypeAllocSize(Ty)) { FirstIdx = Offset/TySize; @@ -711,7 +711,7 @@ const Type *InstCombiner::FindElementAtOffset(const Type *Ty, int64_t Offset, if (uint64_t(Offset*8) >= TD->getTypeSizeInBits(Ty)) return 0; - if (const StructType *STy = dyn_cast(Ty)) { + if (StructType *STy = dyn_cast(Ty)) { const StructLayout *SL = TD->getStructLayout(STy); assert(Offset < (int64_t)SL->getSizeInBytes() && "Offset must stay within the indexed type"); @@ -722,7 +722,7 @@ const Type *InstCombiner::FindElementAtOffset(const Type *Ty, int64_t Offset, Offset -= SL->getElementOffset(Elt); Ty = STy->getElementType(Elt); - } else if (const ArrayType *AT = dyn_cast(Ty)) { + } else if (ArrayType *AT = dyn_cast(Ty)) { uint64_t EltSize = TD->getTypeAllocSize(AT->getElementType()); assert(EltSize && "Cannot index into a zero-sized array"); NewIndices.push_back(ConstantInt::get(IntPtrTy,Offset/EltSize)); @@ -751,13 +751,13 @@ Instruction *InstCombiner::visitGetElementPtrInst(GetElementPtrInst &GEP) { // by multiples of a zero size type with zero. if (TD) { bool MadeChange = false; - const Type *IntPtrTy = TD->getIntPtrType(GEP.getContext()); + Type *IntPtrTy = TD->getIntPtrType(GEP.getContext()); gep_type_iterator GTI = gep_type_begin(GEP); for (User::op_iterator I = GEP.op_begin() + 1, E = GEP.op_end(); I != E; ++I, ++GTI) { // Skip indices into struct types. - const SequentialType *SeqTy = dyn_cast(*GTI); + SequentialType *SeqTy = dyn_cast(*GTI); if (!SeqTy) continue; // If the element type has zero size then any index over it is equivalent @@ -859,7 +859,7 @@ Instruction *InstCombiner::visitGetElementPtrInst(GetElementPtrInst &GEP) { // Handle gep(bitcast x) and gep(gep x, 0, 0, 0). Value *StrippedPtr = PtrOp->stripPointerCasts(); - const PointerType *StrippedPtrTy =cast(StrippedPtr->getType()); + PointerType *StrippedPtrTy =cast(StrippedPtr->getType()); if (StrippedPtr != PtrOp && StrippedPtrTy->getAddressSpace() == GEP.getPointerAddressSpace()) { @@ -875,8 +875,8 @@ Instruction *InstCombiner::visitGetElementPtrInst(GetElementPtrInst &GEP) { // // This occurs when the program declares an array extern like "int X[];" if (HasZeroPointerIndex) { - const PointerType *CPTy = cast(PtrOp->getType()); - if (const ArrayType *CATy = + PointerType *CPTy = cast(PtrOp->getType()); + if (ArrayType *CATy = dyn_cast(CPTy->getElementType())) { // GEP (bitcast i8* X to [0 x i8]*), i32 0, ... ? if (CATy->getElementType() == StrippedPtrTy->getElementType()) { @@ -889,7 +889,7 @@ Instruction *InstCombiner::visitGetElementPtrInst(GetElementPtrInst &GEP) { return Res; } - if (const ArrayType *XATy = + if (ArrayType *XATy = dyn_cast(StrippedPtrTy->getElementType())){ // GEP (bitcast [10 x i8]* X to [0 x i8]*), i32 0, ... ? if (CATy->getElementType() == XATy->getElementType()) { @@ -907,8 +907,8 @@ Instruction *InstCombiner::visitGetElementPtrInst(GetElementPtrInst &GEP) { // Transform things like: // %t = getelementptr i32* bitcast ([2 x i32]* %str to i32*), i32 %V // into: %t1 = getelementptr [2 x i32]* %str, i32 0, i32 %V; bitcast - const Type *SrcElTy = StrippedPtrTy->getElementType(); - const Type *ResElTy=cast(PtrOp->getType())->getElementType(); + Type *SrcElTy = StrippedPtrTy->getElementType(); + Type *ResElTy=cast(PtrOp->getType())->getElementType(); if (TD && SrcElTy->isArrayTy() && TD->getTypeAllocSize(cast(SrcElTy)->getElementType()) == TD->getTypeAllocSize(ResElTy)) { @@ -1023,7 +1023,7 @@ Instruction *InstCombiner::visitGetElementPtrInst(GetElementPtrInst &GEP) { // field at Offset in 'A's type. If so, we can pull the cast through the // GEP. SmallVector NewIndices; - const Type *InTy = + Type *InTy = cast(BCI->getOperand(0)->getType())->getElementType(); if (FindElementAtOffset(InTy, Offset, NewIndices)) { Value *NGEP = GEP.isInBounds() ? -- cgit v1.2.3-70-g09d2