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(parent: 241893f) | patch
[InstCombine] fold sdiv with hidden common factor
authorSanjay Patel <spatel@rotateright.com>
Thu, 6 Oct 2022 16:31:42 +0000 (12:31 -0400)
committerSanjay Patel <spatel@rotateright.com>
Thu, 6 Oct 2022 17:11:50 +0000 (13:11 -0400)
commit8da2fa856f1b7ddd079e7b0637082f1413d97ea2
treeb2260e7cafa546b5ed61f0b192df95c7cecf163ctree | snapshot
parent241893f99fd2cfe2fb7e34dfbe34f24af81532b5commit | diff
[InstCombine] fold sdiv with hidden common factor

(X * Y) s/ (X << Z) --> Y s/ (1 << Z)

https://alive2.llvm.org/ce/z/yRSddG

issue #58137
llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp diff | blob | history
llvm/test/Transforms/InstCombine/div-shift.ll diff | blob | history
llvm/test/Transforms/PhaseOrdering/reassociate-instcombine.ll diff | blob | history
Domain: System / Toolchain;