diff options
Diffstat (limited to 'lib/VMCore/ConstantFold.cpp')
| -rw-r--r-- | lib/VMCore/ConstantFold.cpp | 17 |
1 files changed, 7 insertions, 10 deletions
diff --git a/lib/VMCore/ConstantFold.cpp b/lib/VMCore/ConstantFold.cpp index eb58f7907c..2309f2274b 100644 --- a/lib/VMCore/ConstantFold.cpp +++ b/lib/VMCore/ConstantFold.cpp @@ -202,7 +202,7 @@ static Constant *ExtractConstantBytes(Constant *C, unsigned ByteStart, APInt V = CI->getValue(); if (ByteStart) V = V.lshr(ByteStart*8); - V.trunc(ByteSize*8); + V = V.trunc(ByteSize*8); return ConstantInt::get(CI->getContext(), V); } @@ -647,25 +647,22 @@ Constant *llvm::ConstantFoldCastInstruction(unsigned opc, Constant *V, case Instruction::ZExt: if (ConstantInt *CI = dyn_cast<ConstantInt>(V)) { uint32_t BitWidth = cast<IntegerType>(DestTy)->getBitWidth(); - APInt Result(CI->getValue()); - Result.zext(BitWidth); - return ConstantInt::get(V->getContext(), Result); + return ConstantInt::get(V->getContext(), + CI->getValue().zext(BitWidth)); } return 0; case Instruction::SExt: if (ConstantInt *CI = dyn_cast<ConstantInt>(V)) { uint32_t BitWidth = cast<IntegerType>(DestTy)->getBitWidth(); - APInt Result(CI->getValue()); - Result.sext(BitWidth); - return ConstantInt::get(V->getContext(), Result); + return ConstantInt::get(V->getContext(), + CI->getValue().sext(BitWidth)); } return 0; case Instruction::Trunc: { uint32_t DestBitWidth = cast<IntegerType>(DestTy)->getBitWidth(); if (ConstantInt *CI = dyn_cast<ConstantInt>(V)) { - APInt Result(CI->getValue()); - Result.trunc(DestBitWidth); - return ConstantInt::get(V->getContext(), Result); + return ConstantInt::get(V->getContext(), + CI->getValue().trunc(DestBitWidth)); } // The input must be a constantexpr. See if we can simplify this based on |