[llvm-branch-commits] [clang] [Serialization] Code cleanups and polish 83233 (PR #83237)

[Chuanqi Xu via llvm-branch-commits]

ChuanqiXu9 wrote:

> We've hit only one correctness issue that we don't yet have a reproducer for, but it gives this error:
> 
> ```shell
> Eigen/.../plugins/CommonCwiseBinaryOps.inc:47:29: error: inline function 'Eigen::operator*<float>' is not defined [-Werror,-Wundefined-inline]
> ```
> 
> I'll be on vacation for the next two weeks, @usx95 may be able to provide a reproducer in the meanwhile. Maybe you'll have ideas on why it's happening without the reproducer too.
> 
> More importantly, we have seen quite a few compile actions becoming much slower and causing timeouts. @alexfh is trying to profile the compile actions to find which functions are the bottleneck and will report the results here.

Thanks a lot. While the reproducer may be necessary, given eigen is open sourced, I can try to take a look. And also it is pretty important to have some performance insights too.

https://github.com/llvm/llvm-project/pull/83237