[clang] [compiler-rt] [llvm] [PGO][HIP] HSA-introspection device profile drain + GPU PGO tests (PR #203056)

[Joseph Huber via llvm-commits]

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jhuber6 wrote:

Why are we generating entirely orthogonal test infra inside LLVM?

https://github.com/llvm/llvm-project/pull/203056