mi-sched: Precompute a PressureDiff for each instruction, adjust for liveness later.

Created SUPressureDiffs array to hold the per node PDiff computed during DAG building.

Added a getUpwardPressureDelta API that will soon replace the old
one. Compute PressureDelta here from the precomputed PressureDiffs.

Updating for liveness will come next.

llvm-svn: 189640

2 files changed, 6 insertions, 6 deletions

diff --git a/llvm/lib/Target/Hexagon/HexagonMachineScheduler.cpp b/llvm/lib/Target/Hexagon/HexagonMachineScheduler.cpp
index 10bb3e91f2d..22c485f51c4 100644
--- a/llvm/lib/Target/Hexagon/HexagonMachineScheduler.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonMachineScheduler.cpp
@@ -407,11 +407,11 @@ SUnit *ConvergingVLIWScheduler::SchedBoundary::pickOnlyChoice() {
 #ifndef NDEBUG
 void ConvergingVLIWScheduler::traceCandidate(const char *Label,
                                              const ReadyQueue &Q,
-                                             SUnit *SU, PressureElement P) {
+                                             SUnit *SU, PressureChange P) {
   dbgs() << Label << " " << Q.getName() << " ";
   if (P.isValid())
-    dbgs() << DAG->TRI->getRegPressureSetName(P.PSetID) << ":" << P.UnitIncrease
-           << " ";
+    dbgs() << DAG->TRI->getRegPressureSetName(P.getPSet()) << ":"
+           << P.getUnitInc() << " ";
   else
     dbgs() << "     ";
   SU->dump(DAG);
@@ -517,8 +517,8 @@ int ConvergingVLIWScheduler::SchedulingCost(ReadyQueue &Q, SUnit *SU,
   ResCount += (NumNodesBlocking * ScaleTwo);
 
   // Factor in reg pressure as a heuristic.
-  ResCount -= (Delta.Excess.UnitIncrease*PriorityThree);
-  ResCount -= (Delta.CriticalMax.UnitIncrease*PriorityThree);
+  ResCount -= (Delta.Excess.getUnitInc()*PriorityThree);
+  ResCount -= (Delta.CriticalMax.getUnitInc()*PriorityThree);
 
   DEBUG(if (verbose) dbgs() << " Total(" << ResCount << ")");
 
diff --git a/llvm/lib/Target/Hexagon/HexagonMachineScheduler.h b/llvm/lib/Target/Hexagon/HexagonMachineScheduler.h
index 171193e2307..8ac333fa7db 100644
--- a/llvm/lib/Target/Hexagon/HexagonMachineScheduler.h
+++ b/llvm/lib/Target/Hexagon/HexagonMachineScheduler.h
@@ -233,7 +233,7 @@ protected:
                                SchedCandidate &Candidate);
 #ifndef NDEBUG
   void traceCandidate(const char *Label, const ReadyQueue &Q, SUnit *SU,
-                      PressureElement P = PressureElement());
+                      PressureChange P = PressureChange());
 #endif
 };