[llvm] [InstCombine] Ensure Safe Handling of Flags in foldFNegIntoConstant (PR #94148)

[via llvm-commits]

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@@ -2742,6 +2742,17 @@ Instruction *InstCombinerImpl::visitSub(BinaryOperator &I) {
   return TryToNarrowDeduceFlags();
 }
 
+static FastMathFlags combineFastMathFlagsForFNeg(FastMathFlags FMF,
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SahilPatidar wrote:

@arsenm 

https://github.com/llvm/llvm-project/pull/94148