[PATCH] D151246: [InstCombine] Improve bitreverse optimization
Austin Chang via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Tue May 23 13:00:47 PDT 2023
austin880625 created this revision.
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This patch utilizes the helper function implemented in D149699 <https://reviews.llvm.org/D149699> and thus folds the following cases:
bitreverse(logic_op(x, bitreverse(y))) -> logic_op(bitreverse(x), y)
bitreverse(logic_op(bitreverse(x), y)) -> logic_op(x, bitreverse(y))
bitreverse(logic_op(bitreverse(x), bitreverse(y))) -> logic_op(x, y) in multiuse case
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D151246
Files:
llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
llvm/test/Transforms/InstCombine/bitreverse.ll
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