[llvm] [clang] [AMDGPU] Emit a waitcnt instruction after each memory instruction (PR #79236)

[Jun Wang via cfe-commits]

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@@ -167,6 +167,10 @@ def FeatureCuMode : SubtargetFeature<"cumode",
   "Enable CU wavefront execution mode"
 >;
 
+def FeaturePreciseMemory
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jwanggit86 wrote:

End user needs this, so a clang command-line option has been added. There was a lot discussion on this. I'll forward you the email.

https://github.com/llvm/llvm-project/pull/79236