llvm-project

78bf682c - Revert "[HIP][Clang] Remove __AMDGCN_WAVEFRONT_SIZE macros" (#158566)

Revert "[HIP][Clang] Remove __AMDGCN_WAVEFRONT_SIZE macros" (#158566) Reverts llvm/llvm-project#157463 The PR breaks buildbots with old ROCm versions, so revert it and reapply when buildbots are updated.