[all-commits] [llvm/llvm-project] 76af6e: [libc] Manually set the AMDGPU code object version...

[Joseph Huber via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 76af6e77c0e5d8c444daa3aea07f381c07b17da7
      https://github.com/llvm/llvm-project/commit/76af6e77c0e5d8c444daa3aea07f381c07b17da7
  Author: Joseph Huber <35342157+jhuber6 at users.noreply.github.com>
  Date:   2023-09-11 (Mon, 11 Sep 2023)

  Changed paths:
    M libc/cmake/modules/LLVMLibCObjectRules.cmake
    M libc/cmake/modules/LLVMLibCTestRules.cmake
    M libc/cmake/modules/prepare_libc_gpu_build.cmake
    M libc/startup/gpu/amdgpu/CMakeLists.txt
    M libc/test/IntegrationTest/CMakeLists.txt

  Log Message:
  -----------
  [libc] Manually set the AMDGPU code object version (#65986)

Summary:
There is currently effort to change over the default AMDGPU code object
version https://github.com/llvm/llvm-project/pull/65410. However, this
unfortunately causes problems in the LLVM LibC test suite that leads to
a hang while executing. This is most likely a bug to do with indirect
call optimization, as it can be avoided without optimizations or with
manually preventing inlining in the AMDGPU startup code.

This patch sets the AMDGPU code object version to be four explicitly on
the LibC test suite. This should unblock the efforts to move the default
to 5 without breaking the test suite. This isn't a great solution, but
there is currently some time pressure to get COV5 landed and this seems
to be the easiest solution.