[clang] [AMDGPU][MachineScheduler] Alternative way to control excess RP. (PR #68004)

[Jeffrey Byrnes via cfe-commits]

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@@ -702,7 +702,7 @@ bool UnclusteredHighRPStage::initGCNSchedStage() {
   if (!GCNSchedStage::initGCNSchedStage())
     return false;
 
-  if (DAG.RegionsWithHighRP.none() && DAG.RegionsWithExcessRP.none())
+  if (DAG.RegionsWithExcessRP.none())
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jrbyrnes wrote:

What about regions that are close to the critical limit?

https://github.com/llvm/llvm-project/pull/68004