[PATCH] D56772: [MIR] Add simple PRE pass to MachineCSE

[LuoYuanke via Phabricator via llvm-commits]

LuoYuanke added a comment.

@anton-afanasyev
Hi, 
Did you look into the SPEC cpu2017/500.perlbench_r issue? There is some significant performance drop on X86 with the patch. I ask you to revert the patch first, and when the SPEC2017 regression is fixed, we can submit the patch again. How do you think?


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  rL LLVM

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  https://reviews.llvm.org/D56772/new/

https://reviews.llvm.org/D56772