[PATCH] D59722: [ScheduleDAG] Avoid unnecessary recomputation of topological order.

Mon Mar 25 16:13:51 PDT 2019

fhahn added a comment.

In D59722#1440346 <https://reviews.llvm.org/D59722#1440346>, @paquette wrote:

> LGTM
>
> Out of curiosity, do you have any numbers for how this impacts compile time on, say, CTMark? What percentage of an improvement can we expect from this?

I ran CTmark in a few configurations on X86 (-O3 X86, -O0 X86, -O3 + LTO ARM64) and overall it seems neutral: some gains and losses up to 0.5%, but that's also the run-to-run difference on some runs on my machine.

Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D59722/new/

https://reviews.llvm.org/D59722