[PATCH] D133188: [InstCombine] extractvalue (any_mul_with_overflow X, 2^n), 0 -> X << n
Simon Pilgrim via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Tue Sep 6 05:29:00 PDT 2022
RKSimon added inline comments.
================
Comment at: llvm/lib/Transforms/InstCombine/InstructionCombining.cpp:3259
const APInt *C = nullptr;
if (match(WO->getRHS(), m_APIntAllowUndef(C))) {
+ if (*EV.idx_begin() == 0 && (OvID == Intrinsic::smul_with_overflow ||
----------------
m_AllOnes ?
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D133188/new/
https://reviews.llvm.org/D133188
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