X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FCodeGen%2FScoreboardHazardRecognizer.h;h=060e89a3fdc79d42414cba1f37ee69f35338bbec;hb=0f841b4f95cd3a5c451d65f5fd082d8bcb2828d9;hp=561bf0fecf60e09fa3349e6842b3faf261026787;hpb=6b1207267f01877ff9b351786c902cb2ecd354c0;p=oota-llvm.git

diff --git a/include/llvm/CodeGen/ScoreboardHazardRecognizer.h b/include/llvm/CodeGen/ScoreboardHazardRecognizer.h
index 561bf0fecf6..060e89a3fdc 100644
--- a/include/llvm/CodeGen/ScoreboardHazardRecognizer.h
+++ b/include/llvm/CodeGen/ScoreboardHazardRecognizer.h
@@ -21,11 +21,11 @@
 
 #include <cassert>
 #include <cstring>
-#include <string>
 
 namespace llvm {
 
 class InstrItineraryData;
+class ScheduleDAG;
 class SUnit;
 
 class ScoreboardHazardRecognizer : public ScheduleHazardRecognizer {
@@ -84,16 +84,38 @@ class ScoreboardHazardRecognizer : public ScheduleHazardRecognizer {
     void dump() const;
   };
 
+#ifndef NDEBUG
+  // Support for tracing ScoreboardHazardRecognizer as a component within
+  // another module. Follows the current thread-unsafe model of tracing.
+  static const char *DebugType;
+#endif
+
   // Itinerary data for the target.
   const InstrItineraryData *ItinData;
 
+  const ScheduleDAG *DAG;
+
+  /// IssueWidth - Max issue per cycle. 0=Unknown.
+  unsigned IssueWidth;
+
+  /// IssueCount - Count instructions issued in this cycle.
+  unsigned IssueCount;
+
   Scoreboard ReservedScoreboard;
   Scoreboard RequiredScoreboard;
 
 public:
-  ScoreboardHazardRecognizer(const InstrItineraryData *ItinData);
+  ScoreboardHazardRecognizer(const InstrItineraryData *ItinData,
+                             const ScheduleDAG *DAG,
+                             const char *ParentDebugType = "");
+
+  /// atIssueLimit - Return true if no more instructions may be issued in this
+  /// cycle.
+  virtual bool atIssueLimit() const;
 
-  virtual HazardType getHazardType(SUnit *SU);
+  // Stalls provides an cycle offset at which SU will be scheduled. It will be
+  // negative for bottom-up scheduling.
+  virtual HazardType getHazardType(SUnit *SU, int Stalls);
   virtual void Reset();
   virtual void EmitInstruction(SUnit *SU);
   virtual void AdvanceCycle();