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Use the new convertFromAPInt instead of convertFromZeroExtendedInteger.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47744 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2008-02-29 01:42:52 +00:00
parent c6f9a06238
commit 37a9ca5bc5
1 changed files with 3 additions and 6 deletions
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9
lib/VMCore/ConstantFold.cpp
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@ -170,8 +170,6 @@ static Constant *FoldBitCast(Constant *V, const Type *DestTy) {
Constant *llvm::ConstantFoldCastInstruction(unsigned opc, const Constant *V,
const Type *DestTy) {
const Type *SrcTy = V->getType();
if (isa<UndefValue>(V)) {
// zext(undef) = 0, because the top bits will be zero.
// sext(undef) = 0, because the top bits will all be the same.
@ -257,12 +255,11 @@ Constant *llvm::ConstantFoldCastInstruction(unsigned opc, const Constant *V,
if (const ConstantInt *CI = dyn_cast<ConstantInt>(V)) {
APInt api = CI->getValue();
const uint64_t zero[] = {0, 0};
uint32_t BitWidth = cast<IntegerType>(SrcTy)->getBitWidth();
APFloat apf = APFloat(APInt(DestTy->getPrimitiveSizeInBits(),
2, zero));
(void)apf.convertFromZeroExtendedInteger(api.getRawData(), BitWidth,
opc==Instruction::SIToFP,
APFloat::rmNearestTiesToEven);
(void)apf.convertFromAPInt(api,
opc==Instruction::SIToFP,
APFloat::rmNearestTiesToEven);
return ConstantFP::get(DestTy, apf);
}
if (const ConstantVector *CV = dyn_cast<ConstantVector>(V)) {