[PATCH] D124369: [InstCombine] C0 >>{ashr, exact} (X - C1) --> (C0 << C1) >>{ashr} X
Nicolas Abram via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Wed Apr 27 08:04:31 PDT 2022
nico-abram updated this revision to Diff 425522.
nico-abram added a comment.
Updated the patch with `update_test_checks.py` run with the changes applied on top of https://reviews.llvm.org/rGfd9026131e6c5de6f4e582d5c85c5b5588672dfb
Looks like what I'd expect. It's optimizing it through the opaque use call, but that doesn't look like a problem to me.
I also removed the `setHasNoSignedWrap(false)` and it did not change the test results or the upodate_test_checks changes. Not sure what I was seeing yesterday.
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D124369/new/
https://reviews.llvm.org/D124369
Files:
llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp
llvm/test/Transforms/InstCombine/shift-add.ll
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