[llvm] [clang] [AMDGPU] Emit a waitcnt instruction after each memory instruction (PR #68932)

[Jay Foad via cfe-commits]

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@@ -388,6 +388,8 @@ class SIInsertWaitcnts : public MachineFunctionPass {
   // message.
   DenseSet<MachineInstr *> ReleaseVGPRInsts;
 
+  // bool insertWaitcntAfterMemOp(MachineFunction &MF);
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jayfoad wrote:

Remove all the unused code, don't just comment it out.

https://github.com/llvm/llvm-project/pull/68932
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