diff options
Diffstat (limited to 'llvm/lib/IR')
| -rw-r--r-- | llvm/lib/IR/Instructions.cpp | 28 |
1 files changed, 3 insertions, 25 deletions
diff --git a/llvm/lib/IR/Instructions.cpp b/llvm/lib/IR/Instructions.cpp index d6297cb6cae..55c8ab6d5fd 100644 --- a/llvm/lib/IR/Instructions.cpp +++ b/llvm/lib/IR/Instructions.cpp @@ -2299,7 +2299,7 @@ bool CastInst::isLosslessCast() const { bool CastInst::isNoopCast(Instruction::CastOps Opcode, Type *SrcTy, Type *DestTy, - Type *IntPtrTy) { + const DataLayout &DL) { switch (Opcode) { default: llvm_unreachable("Invalid CastOp"); case Instruction::Trunc: @@ -2317,36 +2317,14 @@ bool CastInst::isNoopCast(Instruction::CastOps Opcode, case Instruction::BitCast: return true; // BitCast never modifies bits. case Instruction::PtrToInt: - return IntPtrTy->getScalarSizeInBits() == + return DL.getIntPtrType(SrcTy)->getScalarSizeInBits() == DestTy->getScalarSizeInBits(); case Instruction::IntToPtr: - return IntPtrTy->getScalarSizeInBits() == + return DL.getIntPtrType(DestTy)->getScalarSizeInBits() == SrcTy->getScalarSizeInBits(); } } -/// @brief Determine if a cast is a no-op. -bool CastInst::isNoopCast(Instruction::CastOps Opcode, - Type *SrcTy, - Type *DestTy, - const DataLayout &DL) { - Type *PtrOpTy = nullptr; - if (Opcode == Instruction::PtrToInt) - PtrOpTy = SrcTy; - else if (Opcode == Instruction::IntToPtr) - PtrOpTy = DestTy; - - Type *IntPtrTy = PtrOpTy ? DL.getIntPtrType(PtrOpTy) : - DL.getIntPtrType(SrcTy->getContext(), 0); - - return isNoopCast(Opcode, SrcTy, DestTy, IntPtrTy); -} - -/// @brief Determine if a cast is a no-op. -bool CastInst::isNoopCast(Type *IntPtrTy) const { - return isNoopCast(getOpcode(), getOperand(0)->getType(), getType(), IntPtrTy); -} - bool CastInst::isNoopCast(const DataLayout &DL) const { return isNoopCast(getOpcode(), getOperand(0)->getType(), getType(), DL); } |
