[PATCH] D49775: [MCA] Avoid an InstrDesc copy in mca::LSUnit::reserve.

[Matt Davis via Phabricator via llvm-commits]

mattd added a comment.

In https://reviews.llvm.org/D49775#1176089, @orodley wrote:

> @mattd
>
> Yep, it was through profiling. I've been working on a new scheduler using MCA, as Clement alluded to in https://bugs.llvm.org/show_bug.cgi?id=37696.
>  `mca::Pipeline::run` ends up being the hot part, and this was a simple, easily upstreamable 5% improvement within that :)


Thanks!


Repository:
  rL LLVM

https://reviews.llvm.org/D49775