[clang] [llvm] [AMDGPU] Introduce asyncmark/wait intrinsics (PR #180467)

[via cfe-commits]

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@@ -1427,6 +1529,49 @@ void WaitcntBrackets::determineWaitForScore(InstCounterType T,
   }
 }
 
+AMDGPU::Waitcnt WaitcntBrackets::determineAsyncWait(unsigned N) {
+  LLVM_DEBUG({
+    dbgs() << "Need " << N << " async marks. Found " << AsyncMarks.size()
+           << ":\n";
+    for (const auto &Mark : AsyncMarks) {
+      llvm::interleaveComma(Mark, dbgs());
+      dbgs() << '\n';
+    }
+  });
+
+  AMDGPU::Waitcnt Wait;
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vporpo wrote:

Wait isn't used until later in line 1554, so perhaps move it to line 1551?

https://github.com/llvm/llvm-project/pull/180467