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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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13
lib/CodeGen/ELFWriter.cpp
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@ -457,16 +457,15 @@ void ELFWriter::EmitGlobalConstant(const Constant *CV, ELFSection &GblS) {
return;
} else if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV)) {
APInt Val = CFP->getValueAPF().bitcastToAPInt();
if (CFP->getType() == Type::getDoubleTy(CV->getContext()))
if (CFP->getType()->isDoubleTy())
GblS.emitWord64(Val.getZExtValue());
else if (CFP->getType() == Type::getFloatTy(CV->getContext()))
else if (CFP->getType()->isFloatTy())
GblS.emitWord32(Val.getZExtValue());
else if (CFP->getType() == Type::getX86_FP80Ty(CV->getContext())) {
unsigned PadSize =
TD->getTypeAllocSize(Type::getX86_FP80Ty(CV->getContext()))-
TD->getTypeStoreSize(Type::getX86_FP80Ty(CV->getContext()));
else if (CFP->getType()->isX86_FP80Ty()) {
unsigned PadSize = TD->getTypeAllocSize(CFP->getType())-
TD->getTypeStoreSize(CFP->getType());
GblS.emitWordFP80(Val.getRawData(), PadSize);
} else if (CFP->getType() == Type::getPPC_FP128Ty(CV->getContext()))
} else if (CFP->getType()->isPPC_FP128Ty())
llvm_unreachable("PPC_FP128Ty global emission not implemented");
return;
} else if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {