tree 8147d93935cffcfd704755b1f45f1ca6ffb0a1bf
parent be7cf63b4a402ebc5b1dacc6579a693c92e1328e
author Yingwei Zheng <dtcxzyw2333@gmail.com> 1745830903 +0800
committer GitHub <noreply@github.com> 1745830903 +0800
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[InstCombine] Preserve the sign bit of NaN in `SimplifyDemandedUseFPClass` (#137287)

Alive2: https://alive2.llvm.org/ce/z/uiUzEf

Closes https://github.com/llvm/llvm-project/issues/137196.

Note: To avoid regression in
`ret_nofpclass_nopositives_copysign_nnan_flag`, the second commit takes
FMF into account.