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| author | Alex MacLean <amaclean@nvidia.com> | 2025-06-13 11:16:44 -0700 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2025-06-13 11:16:44 -0700 |
| commit | 59388fb0b92d7efd5737efd6c7b6d5c82f1bc6a8 (patch) | |
| tree | dc613674a3bbaa893ca44d34905825c399331a0c /clang/lib/CodeGen/CodeGenModule.cpp | |
| parent | f6bf3bd5e001918780e7b1e8fceeb02604d65783 (diff) | |
| download | llvm-59388fb0b92d7efd5737efd6c7b6d5c82f1bc6a8.zip llvm-59388fb0b92d7efd5737efd6c7b6d5c82f1bc6a8.tar.gz llvm-59388fb0b92d7efd5737efd6c7b6d5c82f1bc6a8.tar.bz2 | |
[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.
Diffstat (limited to 'clang/lib/CodeGen/CodeGenModule.cpp')
0 files changed, 0 insertions, 0 deletions