[PATCH] D109523: [ARM] Remove isel patterns that start with (fneg (fma)).

Tue Sep 14 07:53:09 PDT 2021

spatel added a reviewer: dmgreen.
spatel added a comment.

Echoing the comment in D109525 <https://reviews.llvm.org/D109525> - are there tests that include 'nsz' to confirm that we can still fold those patterns? 
This is fixing a miscompile, so we might not want to hold it up on an optimization, but it would be nice to salvage the transform if possible.

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Comment at: llvm/test/CodeGen/ARM/fusedMAC.ll:16
+;
+; DONT-FUSE-LABEL: fusedMACTest1:
+; DONT-FUSE:       @ %bb.0:
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Generate the full checks as a preliminary step, so we just see the diffs?

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D109523/new/

https://reviews.llvm.org/D109523