[PATCH] D119754: [InstCombine] reassociate min/max intrinsics with constant operands
Sanjay Patel via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Mon Feb 14 11:46:34 PST 2022
spatel created this revision.
spatel added reviewers: nikic, RKSimon.
Herald added subscribers: hiraditya, mcrosier.
spatel requested review of this revision.
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.
Integer min/max operations are associative:
max (max X, C0), C1 <https://reviews.llvm.org/C1> --> max X, (max C0, C1 <https://reviews.llvm.org/C1>) --> max X, NewC
https://alive2.llvm.org/ce/z/wW5HVM
This would avoid a regression when we canonicalize to min/max intrinsics (see D98152 <https://reviews.llvm.org/D98152> ).
https://reviews.llvm.org/D119754
Files:
llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
llvm/test/Transforms/InstCombine/minmax-intrinsics.ll
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