[clang] [llvm] [AMDGPU] Introduce asyncmark/wait intrinsics (PR #173259)

[Pierre van Houtryve via cfe-commits]

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@@ -0,0 +1,285 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
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Pierre-vh wrote:

Checks are not auto-generated

https://github.com/llvm/llvm-project/pull/173259