[llvm] [AMDGPU][Scheduler] Scoring system for rematerialization candidates (PR #153092)

[Matt Arsenault via llvm-commits]

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@@ -1089,33 +1102,224 @@ bool ClusteredLowOccStage::initGCNSchedStage() {
 #define REMAT_PREFIX "[PreRARemat] "
 #define REMAT_DEBUG(X) LLVM_DEBUG(dbgs() << REMAT_PREFIX; X;)
 
+#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
+void PreRARematStage::printTargetRegions(bool PrintAll) const {
+  if (PrintAll) {
+    for (auto [I, Target] : enumerate(RPTargets))
+      REMAT_DEBUG(dbgs() << "  [" << I << "] " << Target << '\n');
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arsenm wrote:

You only use this under REMAT_DEBUG uses, so can drop all the REMAT_DEBUGs here

https://github.com/llvm/llvm-project/pull/153092