[PATCH] D149260: [AArch64] Emit FNMADD instead of FNEG(FMADD)

[Matt Devereau via Phabricator via llvm-commits]

MattDevereau created this revision.
MattDevereau added reviewers: sdesmalen, david-arm, kmclaughlin.
Herald added subscribers: hiraditya, kristof.beyls.
Herald added a project: All.
MattDevereau requested review of this revision.
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.

Emit FNMADD instead of FNEG(FMADD) for optimization levels
above Oz when fast-math flags permit it.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D149260

Files:
  llvm/include/llvm/CodeGen/MachineCombinerPattern.h
  llvm/lib/Target/AArch64/AArch64InstrInfo.cpp
  llvm/test/CodeGen/AArch64/aarch64_fnmadd.ll

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