[llvm-commits] [llvm] r170449 - /llvm/trunk/lib/CodeGen/MachineScheduler.cpp

[Andrew Trick]

Author: atrick
Date: Tue Dec 18 14:52:49 2012
New Revision: 170449

URL: http://llvm.org/viewvc/llvm-project?rev=170449&view=rev
Log:
MISched: minor improvement, initialize remaining resources before the first scheduling decision.

Modified:
    llvm/trunk/lib/CodeGen/MachineScheduler.cpp

Modified: llvm/trunk/lib/CodeGen/MachineScheduler.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/MachineScheduler.cpp?rev=170449&r1=170448&r2=170449&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/MachineScheduler.cpp (original)
+++ llvm/trunk/lib/CodeGen/MachineScheduler.cpp Tue Dec 18 14:52:49 2012
@@ -1166,6 +1166,16 @@
       RemainingCounts[PIdx] += (Factor * PI->Cycles);
     }
   }
+  for (unsigned PIdx = 0, PEnd = SchedModel->getNumProcResourceKinds();
+       PIdx != PEnd; ++PIdx) {
+    if ((int)(RemainingCounts[PIdx] - RemainingCounts[CritResIdx])
+        >= (int)SchedModel->getLatencyFactor()) {
+      CritResIdx = PIdx;
+    }
+  }
+  MaxRemainingCount = std::max(
+    RemainingMicroOps * SchedModel->getMicroOpFactor(),
+    RemainingCounts[CritResIdx]);
 }
 
 void ConvergingScheduler::SchedBoundary::