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(parent: b568c11) | patch
[AArch64] Optimize overflow checks for [s|u]mul.with.overflow.i32.
authorEli Friedman <efriedma@quicinc.com>
Mon, 12 Jul 2021 22:28:09 +0000 (15:28 -0700)
committerEli Friedman <efriedma@quicinc.com>
Mon, 12 Jul 2021 22:30:42 +0000 (15:30 -0700)
commit6c04b7dd4fb4bfcc5db10b844d6235abbb21b805
tree7e91dedc1de225df3968656727aaf2e648a5e5d2tree | snapshot
parentb568c11b4090ce25bcb5e5efa9c1c504e0074bd7commit | diff
[AArch64] Optimize overflow checks for [s|u]mul.with.overflow.i32.

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

Differential Revision: https://reviews.llvm.org/D105770
llvm/lib/Target/AArch64/AArch64FastISel.cpp diff | blob | history
llvm/lib/Target/AArch64/AArch64ISelLowering.cpp diff | blob | history
llvm/test/CodeGen/AArch64/arm64-xaluo.ll diff | blob | history
Domain: System / Toolchain;