[PATCH] D105770: [AArch64] Optimize overflow checks for [s|u]mul.with.overflow.i32.

Eli Friedman via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Sat Jul 10 23:38:46 PDT 2021


efriedma created this revision.
efriedma added reviewers: SjoerdMeijer, dmgreen.
Herald added subscribers: danielkiss, hiraditya, kristof.beyls.
efriedma requested review of this revision.
Herald added a project: LLVM.

Saves one instruction for signed, uses a cheaper instruction for unsigned.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D105770

Files:
  llvm/lib/Target/AArch64/AArch64FastISel.cpp
  llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
  llvm/test/CodeGen/AArch64/arm64-xaluo.ll

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