[PATCH] D41766: [MachineCombiner] Add check for optimal pattern order.

[Florian Hahn via Phabricator via llvm-commits]

fhahn updated this revision to Diff 131989.
fhahn added a comment.

Thanks Gerolf! The main reason for adding this is that @mssimpso pointed out in https://reviews.llvm.org/D41587 that some of the recently added patterns were not optimally ordered for at least Falkor and I wanted to give us a better chance at detecting sub-optimal orderings automatically.


https://reviews.llvm.org/D41766

Files:
  lib/CodeGen/MachineCombiner.cpp
  test/CodeGen/AArch64/aarch64-combine-fmul-fsub.mir
  test/CodeGen/AArch64/machine-combiner.ll
  test/CodeGen/AArch64/machine-combiner.mir
  test/CodeGen/X86/machine-combiner-int-vec.ll
  test/CodeGen/X86/machine-combiner-int.ll
  test/CodeGen/X86/machine-combiner.ll

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