[llvm] [AMDGPU] NFC: Add BBLiveOutMap & LiveOut Cache (PR #93089)

[Matt Arsenault via llvm-commits]

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@@ -215,6 +242,10 @@ class GCNScheduleDAGMILive final : public ScheduleDAGMILive {
 
   DenseMap<MachineInstr *, GCNRPTracker::LiveRegSet> getBBLiveInMap() const;
 
+  DenseMap<MachineInstr *, GCNRPTracker::LiveRegSet> getBBLiveOutMap() const;
+
+  RegionPressureMap RegionLiveOuts;
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arsenm wrote:

Document this 

https://github.com/llvm/llvm-project/pull/93089