llvm-project

1f69d635 - [InstCombine] Preserve the sign bit of NaN in `SimplifyDemandedUseFPClass` (#137287)

[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.