[llvm] [AMDGPU] Introduce GCNPostGenericScheduler to model MFMA-VALU coexecution (PR #184084)

[Frederik Harwath via llvm-commits]

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@@ -802,6 +802,25 @@ class MemoryClauseInitialScheduleStage : public GCNSchedStage {
       : GCNSchedStage(StageID, DAG) {}
 };
 
+class GCNPostGenericScheduler : public PostGenericScheduler {
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frederik-h wrote:

Add a comment describing this class.

https://github.com/llvm/llvm-project/pull/184084