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Reverting r43070 for now. It's causing llc test failures. 

llvm-svn: 43103
This commit is contained in:
Evan Cheng 2007-10-17 23:51:13 +00:00
parent 37f888e6e8
commit cdcc1d0444
1 changed files with 0 additions and 25 deletions
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25
llvm/lib/Transforms/Scalar/InstructionCombining.cpp
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@ -7686,8 +7686,6 @@ Instruction *InstCombiner::visitCallInst(CallInst &CI) {
Value *Dest = InsertCastBefore(Instruction::BitCast, CI.getOperand(1), NewPtrTy, CI);
Value *L = new LoadInst(Src, "tmp", false, Align, &CI);
Value *NS = new StoreInst(L, Dest, false, Align, &CI);
AddToWorkList(cast<Instruction>(L));
AddToWorkList(cast<Instruction>(NS));
CI.replaceAllUsesWith(NS);
Changed = true;
return EraseInstFromFunction(CI);
@ -9116,29 +9114,6 @@ Instruction *InstCombiner::visitLoadInst(LoadInst &LI) {
}
} else if (CE->isCast()) {
// Instead of loading constant c string, use corresponding integer value
// directly if string length is small enough.
const std::string &Str = CE->getOperand(0)->getStringValue();
if (!Str.empty()) {
unsigned len = Str.length();
const Type *Ty = cast<PointerType>(CE->getType())->getElementType();
unsigned numBits = Ty->getPrimitiveSizeInBits();
if ((numBits >> 3) == len + 1) {
// Replace LI with immediate integer store.
APInt StrVal(numBits, 0);
APInt SingleChar(numBits, 0);
for (unsigned i = 0; i < len; i++) {
SingleChar = (uint64_t) Str[i];
StrVal = (StrVal << 8) | SingleChar;
}
// Append NULL at the end.
SingleChar = 0;
StrVal = (StrVal << 8) | SingleChar;
Value *NL = ConstantInt::get(StrVal);
return ReplaceInstUsesWith(LI, NL);
}
}
if (Instruction *Res = InstCombineLoadCast(*this, LI))
return Res;
}