[all-commits] [llvm/llvm-project] 12e8e0: [AMDGPU] Correctly use the auxiliary toolchain to ...

[Joseph Huber via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 12e8e0b10c3f52098cc41322c12eb7f3bfd75b06
      https://github.com/llvm/llvm-project/commit/12e8e0b10c3f52098cc41322c12eb7f3bfd75b06
  Author: Joseph Huber <huberjn at outlook.com>
  Date:   2024-09-20 (Fri, 20 Sep 2024)

  Changed paths:
    M clang/lib/Driver/ToolChains/AMDGPUOpenMP.cpp
    M clang/lib/Driver/ToolChains/AMDGPUOpenMP.h
    M clang/test/Driver/amdgpu-openmp-toolchain.c

  Log Message:
  -----------
  [AMDGPU] Correctly use the auxiliary toolchain to include libc++ (#109366)

Summary:
Now that we have a functional build for `libc++` on the GPU, it will now
find the target specific headers in `include/amdgcn-amd-amdhsa`. This is
a problem for offloading via OpenMP because we need the CPU and GPU
headers to match exactly. All the other toolchains forward this
correctly except the AMDGPU OpenMP one, fix this by overriding it to use
the host toolchain instead of the device one, so the triple is not
returned as `amdgcn-amd-amdhsa`.



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