[PATCH] D126005: [GISel] Add identity and fneg combines for G_FMUL

[Jay Foad via Phabricator via llvm-commits]

foad added a comment.

General question about all these combines: why do we need them? Why wouldn't they be done at the IR level, or are they cleaning up code that could reasonably be introduced by legalization?


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D126005/new/

https://reviews.llvm.org/D126005