================
@@ -2157,11 +2162,13 @@ Value
*InstCombinerImpl::SimplifyDemandedUseFPClass(Instruction *I,
}
// With nnan: X + {+/-}Inf --> {+/-}Inf
- if (KnownRHS.isKnownAlways(fcInf | fcNan) &&
- KnownLHS.isKnownNever(fcNan))
+ if (I->getOpcode() == Instruction::FAdd &&
+ KnownRHS.isKnownAlways(fcInf | fcNan) && KnownLHS.isKnownNever(fcNan))
{
return I->getOperand(1);
+ }
// With nnan: {+/-}Inf + X --> {+/-}Inf
+ // With nnan: {+/-}Inf - X --> {+/-}Inf
if (KnownLHS.isKnownAlways(fcInf | fcNan) &&
----------------
dtcxzyw wrote:
ResultNotNan &&
https://github.com/llvm/llvm-project/pull/175852
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