Mark most PPC register classes to avoid write-after-write.

[oota-llvm.git] / lib / Target / PowerPC / PPCHazardRecognizers.h

diff --git a/lib/Target/PowerPC/PPCHazardRecognizers.h b/lib/Target/PowerPC/PPCHazardRecognizers.h
index d80a3850b01057b76a5d557ee0ea08c95988260f..55b45d01b20ee4addec80592335bb77e6ffb8ec7 100644 (file)
--- a/lib/Target/PowerPC/PPCHazardRecognizers.h
+++ b/lib/Target/PowerPC/PPCHazardRecognizers.h
@@ -21,16 +21,19 @@
 
 namespace llvm {
 
-/// PPCHazardRecognizer440 - This class implements a scoreboard-based
-/// hazard recognizer for the PPC 440 and friends.
-class PPCHazardRecognizer440 : public ScoreboardHazardRecognizer {
+/// PPCScoreboardHazardRecognizer - This class implements a scoreboard-based
+/// hazard recognizer for generic PPC processors.
+class PPCScoreboardHazardRecognizer : public ScoreboardHazardRecognizer {
   const ScheduleDAG *DAG;
 public:
-  PPCHazardRecognizer440(const InstrItineraryData *ItinData,
+  PPCScoreboardHazardRecognizer(const InstrItineraryData *ItinData,
                          const ScheduleDAG *DAG_) :
     ScoreboardHazardRecognizer(ItinData, DAG_), DAG(DAG_) {}
 
+  virtual HazardType getHazardType(SUnit *SU, int Stalls);
   virtual void EmitInstruction(SUnit *SU);
+  virtual void AdvanceCycle();
+  virtual void Reset();
 };
 
 /// PPCHazardRecognizer970 - This class defines a finite state automata that
@@ -49,9 +52,6 @@ class PPCHazardRecognizer970 : public ScheduleHazardRecognizer {
   // HasCTRSet - If the CTR register is set in this group, disallow BCTRL.
   bool HasCTRSet;
 
-  // Was the last instruction issued a BL8_ELF
-  bool LastWasBL8_ELF;
-
   // StoredPtr - Keep track of the address of any store.  If we see a load from
   // the same address (or one that aliases it), disallow the store.  We can have
   // up to four stores in one dispatch group, hence we track up to 4.