[PATCH] D152649: [AMDGPU] Enable Atomic Optimizer and Default to Iterative Scan Strategy.

Sun Jun 18 14:43:11 PDT 2023

b-sumner added a comment.

In D152649#4431258 <https://reviews.llvm.org/D152649#4431258>, @jhuber6 wrote:

> @jplehr @ronlieb
>
> This patch seems to have had catastrophic results on the build times in the `libc` project. See the buildbot where the build times have gone from ~15 minutes to over an hour https://lab.llvm.org/staging/#/builders/247. Reverting this patch causes the time for my to build a test to go from 55 seconds to 5 seconds. I can try to get pass timing later.

If this is only affecting AMDGPU and libc, is it a problem?  This optimization is very important.  Of course, it would be great if it can be sped up.

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D152649/new/

https://reviews.llvm.org/D152649