[compiler-rt][AMDGPU] Build the device profile runtime

[lfmeadow]

What

Enable the compiler-rt profile component for the amdgcn-amd-amdhsa runtimes build in GPU.cmake (COMPILER_RT_BUILD_PROFILE + COMPILER_RT_PROFILE_BAREMETAL ON).

Why

GPU.cmake had COMPILER_RT_BUILD_PROFILE OFF, so the device profile runtime (amdgcn-amd-amdhsa/libclang_rt.profile.a) was never built and HIP device PGO had no device runtime to link/collect. Matches upstream AMDGPU.cmake.

Test

Built TheRock; confirmed amdgcn-amd-amdhsa/libclang_rt.profile.a is produced and defines __llvm_profile_instrument_gpu and __llvm_profile_sections.

[jhuber6]

Didn't this file get deleted upstream, why's it still here? You're probably looking for AMDGPU.cmake.

[Copilot]

Pull request overview

Enables building the compiler-rt profile runtime for AMDGPU device (amdgcn-amd-amdhsa) builds by turning on the profile component and selecting the baremetal profile configuration in the GPU cache file. This provides the missing device-side libclang_rt.profile.a needed for HIP device PGO instrumentation/linking.

Changes:

• Turn on COMPILER_RT_BUILD_PROFILE in compiler-rt/cmake/caches/GPU.cmake.
• Enable COMPILER_RT_PROFILE_BAREMETAL to build the minimal/baremetal profile runtime appropriate for GPU device environments.

[lfmeadow]

Didn't this file get deleted upstream, why's it still here? You're probably looking for AMDGPU.cmake.

It's in TheRock build, it was removed upstream, but then reverted back in amd-staging because build scripts still reference it.

As best i can tell:

compiler-rt/cmake/caches/AMDGPU.cmake
compiler-rt/cmake/caches/GPU.cmake
compiler-rt/cmake/caches/NVPTX.cmake

dad7442aff5c 2024-07-10 Joseph Huber  [compiler-rt] Initial support for builtins on GPU targets (#95304)
fd069a46bf77 2026-03-10 Joseph Huber  [copmiler-rt] Initial support for building profile library on the GPU (#185552)
e73d8f8fc59a 2026-03-24 Joseph Huber  [compiler-rt] Support unit tests for the GPU build (#187895)
d8ba56ce3f98 2026-04-03 Joseph Huber  [compiler-rt] Split the GPU.cmake cache file to AMDGPU and NVPTX (#190349)
7dd9d30ac172 2026-04-03 Ron Lieberman  Revert "[compiler-rt] Split the GPU.cmake cache file to AMDGPU and NVPTX (#190349)"
2b2d44461856 2026-04-08 Joseph Huber  Reapply "[compiler-rt] Split the GPU.cmake cache file to AMDGPU and NVPTX (#190349)" (#2080)
c3a1536c67b9 2026-04-14 Joseph Huber  Reapply "[compiler-rt] Enable minimal ubsan for GPU targets (#188289)" (#2170)
fe15dce69707 2026-04-14 Joseph Huber  Revert "Reapply "[compiler-rt] Enable minimal ubsan for GPU targets (#188289)…"
6eafa59bcebf 2026-04-28 Joseph Huber  Reapply "Reapply "[compiler-rt] Enable minimal ubsan for GPU targets (#188289)…" (#2260)
d54f3c88e640 2026-06-22 Larry Meadows  Enable device-side PGO libraries.

[jhuber6]

Didn't this file get deleted upstream, why's it still here? You're probably looking for AMDGPU.cmake.

It's in TheRock build, it was removed upstream, but then reverted back in amd-staging because build scripts still reference it.

As best i can tell:

compiler-rt/cmake/caches/AMDGPU.cmake
compiler-rt/cmake/caches/GPU.cmake
compiler-rt/cmake/caches/NVPTX.cmake

dad7442aff5c 2024-07-10 Joseph Huber  [compiler-rt] Initial support for builtins on GPU targets (#95304)
fd069a46bf77 2026-03-10 Joseph Huber  [copmiler-rt] Initial support for building profile library on the GPU (#185552)
e73d8f8fc59a 2026-03-24 Joseph Huber  [compiler-rt] Support unit tests for the GPU build (#187895)
d8ba56ce3f98 2026-04-03 Joseph Huber  [compiler-rt] Split the GPU.cmake cache file to AMDGPU and NVPTX (#190349)
7dd9d30ac172 2026-04-03 Ron Lieberman  Revert "[compiler-rt] Split the GPU.cmake cache file to AMDGPU and NVPTX (#190349)"
2b2d44461856 2026-04-08 Joseph Huber  Reapply "[compiler-rt] Split the GPU.cmake cache file to AMDGPU and NVPTX (#190349)" (#2080)
c3a1536c67b9 2026-04-14 Joseph Huber  Reapply "[compiler-rt] Enable minimal ubsan for GPU targets (#188289)" (#2170)
fe15dce69707 2026-04-14 Joseph Huber  Revert "Reapply "[compiler-rt] Enable minimal ubsan for GPU targets (#188289)…"
6eafa59bcebf 2026-04-28 Joseph Huber  Reapply "Reapply "[compiler-rt] Enable minimal ubsan for GPU targets (#188289)…" (#2260)
d54f3c88e640 2026-06-22 Larry Meadows  Enable device-side PGO libraries.

Can we fix that instead of perpetuating its zombie existence? I unfortunately don't know how to make changes to The Rock.

[lfmeadow]

Superseded by the consolidation approach: #3027 (remove redundant GPU.cmake) + ROCm/TheRock#6055 (point amdgcn runtimes cache at AMDGPU.cmake). Closing in favor of those.