llvm-project

59388fb0 - [InstCombine] Preserve NSW/NUW flags when folding const BOp with min/max (#143471)

[InstCombine] Preserve NSW/NUW flags when folding const BOp with min/max (#143471) When folding `X Pred C2 ? X BOp C1 : C2 BOp C1` to `min/max(X, C2) BOp C1`, if NUW/NSW flags are present on `X BOp C1` and could be safely applied to `C2 BOp C1`, then they may be added on the BOp after the fold is complete. https://alive2.llvm.org/ce/z/n_3aNJ Preserving these flags can allow subsequent transforms to re-order the min/max and BOp, which in the case of NVPTX would allow for some potential future transformations which would improve instruction-selection.