[PATCH] D109525: [SVE] Remove isel patterns for (fneg (fma)) -> fnmla.
Craig Topper via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Thu Sep 9 09:43:11 PDT 2021
craig.topper created this revision.
craig.topper added reviewers: bsmith, paulwalker-arm, peterwaller-arm, efriedma, dmgreen, joechrisellis.
Herald added subscribers: pengfei, psnobl, hiraditya, tschuett.
craig.topper requested review of this revision.
Herald added a project: LLVM.
(fneg (fma X, Y, Z)) is not the same as (fma (fneg X), Y, (fneg Z))
due to -0.0.
See https://reviews.llvm.org/D90901 for a similar discussion on X86.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D109525
Files:
llvm/lib/Target/AArch64/AArch64SVEInstrInfo.td
llvm/test/CodeGen/AArch64/sve-fp-combine.ll
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