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[ConstantFolding] Reduce APInt and APFloat copying.

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llvm-svn: 260826
This commit is contained in:
Benjamin Kramer 2016-02-13 16:54:14 +00:00
parent 0225b4aec7
commit 2bfcfaa743
2 changed files with 8 additions and 8 deletions
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2
lib/Analysis/ConstantFolding.cpp
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@ -1678,7 +1678,7 @@ static Constant *ConstantFoldScalarCall(StringRef Name, unsigned IntrinsicID,
}
if (IntrinsicID == Intrinsic::copysign) {
APFloat V1 = Op1->getValueAPF();
APFloat V2 = Op2->getValueAPF();
const APFloat &V2 = Op2->getValueAPF();
V1.copySign(V2);
return ConstantFP::get(Ty->getContext(), V1);
}

14
lib/IR/ConstantFold.cpp
View File

@ -669,7 +669,7 @@ Constant *llvm::ConstantFoldCastInstruction(unsigned opc, Constant *V,
case Instruction::UIToFP:
case Instruction::SIToFP:
if (ConstantInt *CI = dyn_cast<ConstantInt>(V)) {
APInt api = CI->getValue();
const APInt &api = CI->getValue();
APFloat apf(DestTy->getFltSemantics(),
APInt::getNullValue(DestTy->getPrimitiveSizeInBits()));
if (APFloat::opOverflow &
@ -1168,8 +1168,8 @@ Constant *llvm::ConstantFoldBinaryInstruction(unsigned Opcode,
}
} else if (ConstantFP *CFP1 = dyn_cast<ConstantFP>(C1)) {
if (ConstantFP *CFP2 = dyn_cast<ConstantFP>(C2)) {
APFloat C1V = CFP1->getValueAPF();
APFloat C2V = CFP2->getValueAPF();
const APFloat &C1V = CFP1->getValueAPF();
const APFloat &C2V = CFP2->getValueAPF();
APFloat C3V = C1V; // copy for modification
switch (Opcode) {
default:
@ -1729,8 +1729,8 @@ Constant *llvm::ConstantFoldCompareInstruction(unsigned short pred,
}
if (isa<ConstantInt>(C1) && isa<ConstantInt>(C2)) {
APInt V1 = cast<ConstantInt>(C1)->getValue();
APInt V2 = cast<ConstantInt>(C2)->getValue();
const APInt &V1 = cast<ConstantInt>(C1)->getValue();
const APInt &V2 = cast<ConstantInt>(C2)->getValue();
switch (pred) {
default: llvm_unreachable("Invalid ICmp Predicate");
case ICmpInst::ICMP_EQ: return ConstantInt::get(ResultTy, V1 == V2);
@ -1745,8 +1745,8 @@ Constant *llvm::ConstantFoldCompareInstruction(unsigned short pred,
case ICmpInst::ICMP_UGE: return ConstantInt::get(ResultTy, V1.uge(V2));
}
} else if (isa<ConstantFP>(C1) && isa<ConstantFP>(C2)) {
APFloat C1V = cast<ConstantFP>(C1)->getValueAPF();
APFloat C2V = cast<ConstantFP>(C2)->getValueAPF();
const APFloat &C1V = cast<ConstantFP>(C1)->getValueAPF();
const APFloat &C2V = cast<ConstantFP>(C2)->getValueAPF();
APFloat::cmpResult R = C1V.compare(C2V);
switch (pred) {
default: llvm_unreachable("Invalid FCmp Predicate");