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Lower llvm.isunordered(a, b) into a != a | b != b. 

llvm-svn: 20382
This commit is contained in:
Alkis Evlogimenos 2005-03-01 02:07:58 +00:00
parent ff851073f6
commit b3846f4b06
1 changed files with 8 additions and 3 deletions
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11
llvm/lib/CodeGen/IntrinsicLowering.cpp
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@ -206,9 +206,14 @@ void DefaultIntrinsicLowering::LowerIntrinsicCall(CallInst *CI) {
break;
}
case Intrinsic::isunordered: {
static Function *isunorderedFCache = 0;
ReplaceCallWith("isunordered", CI, CI->op_begin()+1, CI->op_end(),
Type::BoolTy, isunorderedFCache);
Value *L = CI->getOperand(1);
Value *R = CI->getOperand(2);
Value *LIsNan = new SetCondInst(Instruction::SetNE, L, L, "LIsNan", CI);
Value *RIsNan = new SetCondInst(Instruction::SetNE, R, R, "RIsNan", CI);
CI->replaceAllUsesWith(
BinaryOperator::create(Instruction::Or, LIsNan, RIsNan,
"isunordered", CI));
break;
}
}