[llvm] [AMDGPU] Optionally Use GCNRPTrackers during scheduling (PR #93090)

[Valery Pykhtin via llvm-commits]

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@@ -414,6 +508,64 @@ void GCNUpwardRPTracker::recede(const MachineInstr &MI) {
   assert(CurPressure == getRegPressure(*MRI, LiveRegs));
 }
 
+void GCNUpwardRPTracker::bumpUpwardPressure(const MachineInstr *MI,
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vpykhtin wrote:

It's not really clear what this method does to the RP tracker object - modifies CurPressure and MaxPressure? What is the state of the object after the method call? From your code I only see one call against a temp object which may indicate that the state of a temp becomes undefined after a call. If so why don't make a non-method function returning max pressure?

https://github.com/llvm/llvm-project/pull/93090