[llvm] [DXIL] Implement pow lowering (PR #86733)
Farzon Lotfi via llvm-commits
llvm-commits at lists.llvm.org
Wed Apr 24 13:39:25 PDT 2024
farzonl wrote:
> Hi, I'm seeing an assertion failure that seems to be due to this patch. I bisected it to this patch. I'm including a reproducer (not reduced) and my bisect script.
>
> Failing bot: https://ci.chromium.org/ui/p/fuchsia/builders/ci/clang_toolchain.ci.core.arm64-debug-subbuild/b8749763985778255185/overview Logs: https://logs.chromium.org/logs/fuchsia/buildbucket/cr-buildbucket/8749760927129551041/+/u/clang/build/stdout
>
> I bisected with
>
> ```
> git bisect good 0f61051f541a5b8cfce25c84262dfdbadb9ca688
> git bisect bad d3f6a88a1fb36f94c71940514e576821c6cc3ade
> git bisect run bisect.sh
> ```
>
> I checked the good and bad SHA's multiple times, and the good commit is one commit prior to yours.
>
> Note if you want to use the bisect script you may need to update paths. The `.cpp` and other `.sh` are from the generated reproducer, so should work if you update the path to clang in the script.
>
> I have creduce running now, so I can probably post a smaller reproducer in a while.
>
> In the meantime, can you take a look or possibly revert this until a fix is ready?
>
> [repro.zip](https://github.com/llvm/llvm-project/files/15100080/repro.zip)
This seems very unlikely this change is in an experimental backend that isn’t enabled on any build bots.
https://github.com/llvm/llvm-project/pull/86733
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