Make the end-of-itinerary mark explicit. Some cleanup.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82709 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/ExactHazardRecognizer.cpp b/lib/CodeGen/ExactHazardRecognizer.cpp
index 85bf43e..4f32c2b 100644
--- a/lib/CodeGen/ExactHazardRecognizer.cpp
+++ b/lib/CodeGen/ExactHazardRecognizer.cpp
@@ -31,13 +31,11 @@
ScoreboardDepth = 1;
if (!ItinData.isEmpty()) {
for (unsigned idx = 0; ; ++idx) {
- // If the begin stage of an itinerary has 0 cycles and units,
- // then we have reached the end of the itineraries.
- const InstrStage *IS = ItinData.beginStage(idx);
- const InstrStage *E = ItinData.endStage(idx);
- if ((IS->getCycles() == 0) && (IS->getUnits() == 0))
+ if (ItinData.isEndMarker(idx))
break;
+ const InstrStage *IS = ItinData.beginStage(idx);
+ const InstrStage *E = ItinData.endStage(idx);
unsigned ItinDepth = 0;
for (; IS != E; ++IS)
ItinDepth += IS->getCycles();