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strength reduce a ton of type equality tests to check the typeid (Through

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the new predicates I added) instead of going through a context and doing a
pointer comparison.  Besides being cheaper, this allows a smart compiler
to turn the if sequence into a switch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83297 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2009-10-05 05:54:46 +00:00
parent 5f7962c1b6
commit cf0fe8d813
17 changed files with 121 additions and 119 deletions
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8
lib/Bitcode/Writer/BitcodeWriter.cpp
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@ -729,18 +729,16 @@ static void WriteConstants(unsigned FirstVal, unsigned LastVal,
} else if (const ConstantFP *CFP = dyn_cast<ConstantFP>(C)) {
Code = bitc::CST_CODE_FLOAT;
const Type *Ty = CFP->getType();
if (Ty == Type::getFloatTy(Ty->getContext()) ||
Ty == Type::getDoubleTy(Ty->getContext())) {
if (Ty->isFloatTy() || Ty->isDoubleTy()) {
Record.push_back(CFP->getValueAPF().bitcastToAPInt().getZExtValue());
} else if (Ty == Type::getX86_FP80Ty(Ty->getContext())) {
} else if (Ty->isX86_FP80Ty()) {
// api needed to prevent premature destruction
// bits are not in the same order as a normal i80 APInt, compensate.
APInt api = CFP->getValueAPF().bitcastToAPInt();
const uint64_t *p = api.getRawData();
Record.push_back((p[1] << 48) | (p[0] >> 16));
Record.push_back(p[0] & 0xffffLL);
} else if (Ty == Type::getFP128Ty(Ty->getContext()) ||
Ty == Type::getPPC_FP128Ty(Ty->getContext())) {
} else if (Ty->isFP128Ty() || Ty->isPPC_FP128Ty()) {
APInt api = CFP->getValueAPF().bitcastToAPInt();
const uint64_t *p = api.getRawData();
Record.push_back(p[0]);