| commit | e3b3c91dd0bbc8bd6f1ee562641daf1e554eb1b6 | |
| author | Craig Topper <craig.topper@sifive.com> | |
| Sun, 3 Dec 2023 08:51:22 +0000 (3 00:51 -0800) | ||
| committer | GitHub <noreply@github.com> | |
| Sun, 3 Dec 2023 08:51:22 +0000 (3 00:51 -0800) | ||
| tree | 68b6adafe0cd2d728821bc385ede159dba66da74 | treesnapshot (tar.gz zip) |
| parent | ecc080c07d97f7879ce64e644cac828922a7b0d9 | commitdiff |
[InstCombine] Fix missed opportunity to fold 'or' into 'mul' operand. (#74225)
We were able to fold
or (mul X, Y), X --> mul X, (add Y, 1) (when the multiply has no common
bits with X)
This patch makes the transform work if the mul operands are commuted.
We were able to fold
or (mul X, Y), X --> mul X, (add Y, 1) (when the multiply has no common
bits with X)
This patch makes the transform work if the mul operands are commuted.
| llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp | diffblobblamehistory | |
| llvm/test/Transforms/InstCombine/or.ll | diffblobblamehistory |