[clang] [compiler-rt] [llvm] [PGO][AMDGPU] Add uniformity-aware offload profile format and instrumentation (PR #190708)

[Yaxun Liu via cfe-commits]

yxsamliu wrote:

I opened #206738 to fix this.

The test still had one extra 8-byte word in the hand-written raw profile. After #190708, that shifts the name section, so the reader sees the wrong name size and MSan catches the over-read.

The fix removes that extra word. I also ran `llvm/test/tools/llvm-profdata`; it passed locally.

https://github.com/llvm/llvm-project/pull/190708