[PATCH] D146810: [CodeGen] Compile-time improvement for Machine Late Instructions Cleanup Pass.

[Valery Pykhtin via Phabricator via llvm-commits]

vpykhtin added a comment.

> On SystemZ, the two versions show practically identical runtimes, so there is no winner. Is there any difference at all on your machine?

Not really :) Something barely measurable like 2.13 and 2.09 seconds on the huge testcase. I'm curious which cases you use to compare to the current, non-map version?

> I am thinking maybe it would be possible to lookup Reg only once by calling removeRedundantDef() with MI and also the KillMI. That way, clearKillsForDef() wouldn't have to duplicate the same lookup.

I need to dig more into what is going on there.


Repository:
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https://reviews.llvm.org/D146810