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

[Ryan Mitchell via llvm-commits]

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@@ -817,6 +856,8 @@ class WaitcntBrackets {
   void setScoreByOperand(const MachineOperand &Op, InstCounterType CntTy,
                          unsigned Val);
 
+  InstCounterType getAsyncCounterType() const { return LOAD_CNT; }
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RyanRio wrote:

Leftover from previous changes/merges

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