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

[Jay Foad via cfe-commits]

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@@ -1207,6 +1271,58 @@ void WaitcntBrackets::print(raw_ostream &OS) const {
   }
   OS << '\n';
 
+  OS << "Async score: ";
+  if (!AsyncScore.size()) {
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jayfoad wrote:

Nit: don't need braces and:
```suggestion
  if (AsyncScore.empty()) {
```

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