[PATCH] D104723: [DAGCombine] Check reassoc flags in aggressive fsub fusion

[Jinsong Ji via Phabricator via llvm-commits]

jsji created this revision.
jsji added reviewers: PowerPC, spatel, mcberg2017, qiucf, dfukalov, arsenm.
Herald added subscribers: kerbowa, hiraditya, nhaehnle, jvesely, nemanjai.
jsji requested review of this revision.
Herald added subscribers: llvm-commits, wdng.
Herald added a project: LLVM.

All the aggressive fsub fusion reassociate operations,
we should guard them with reassoc flag check.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D104723

Files:
  llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  llvm/test/CodeGen/AMDGPU/fpext-free.ll
  llvm/test/CodeGen/PowerPC/fma-assoc.ll

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