[clang] [Frontend][PCH]-Add support for ignoring PCH options (-ignore-pch). (PR #142409)

[Ying Yi via cfe-commits]

MaggieYingYi wrote:

> LLVM Buildbot has detected a new failure on builder `openmp-offload-amdgpu-runtime-2` running on `rocm-worker-hw-02` while building `clang` at step 5 "compile-openmp".
> 
> Full details are available at: https://lab.llvm.org/buildbot/#/builders/10/builds/7030
> 

It looks like this failure is not related with this PR. Build passed in the next build https://lab.llvm.org/buildbot/#/builders/10/builds/7031.



https://github.com/llvm/llvm-project/pull/142409