#ifndef PPCHAZRECS_H
#define PPCHAZRECS_H
+#include "PPCInstrInfo.h"
#include "llvm/CodeGen/ScheduleHazardRecognizer.h"
+#include "llvm/CodeGen/ScoreboardHazardRecognizer.h"
#include "llvm/CodeGen/SelectionDAGNodes.h"
-#include "PPCInstrInfo.h"
namespace llvm {
-
+
+/// PPCScoreboardHazardRecognizer - This class implements a scoreboard-based
+/// hazard recognizer for generic PPC processors.
+class PPCScoreboardHazardRecognizer : public ScoreboardHazardRecognizer {
+ const ScheduleDAG *DAG;
+public:
+ 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
/// models the dispatch logic on the PowerPC 970 (aka G5) processor. This
/// promotes good dispatch group formation and implements noop insertion to
/// or storing then loading from the same address within a dispatch group.
class PPCHazardRecognizer970 : public ScheduleHazardRecognizer {
const TargetInstrInfo &TII;
-
+
unsigned NumIssued; // Number of insts issued, including advanced cycles.
-
+
// Various things that can cause a structural hazard.
-
+
// HasCTRSet - If the CTR register is set in this group, disallow BCTRL.
bool HasCTRSet;
-
+
// 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.
//
// This is null if we haven't seen a store yet. We keep track of both
// operands of the store here, since we support [r+r] and [r+i] addressing.
- SDValue StorePtr1[4], StorePtr2[4];
- unsigned StoreSize[4];
+ const Value *StoreValue[4];
+ int64_t StoreOffset[4];
+ uint64_t StoreSize[4];
unsigned NumStores;
-
+
public:
PPCHazardRecognizer970(const TargetInstrInfo &TII);
- virtual HazardType getHazardType(SUnit *SU);
+ virtual HazardType getHazardType(SUnit *SU, int Stalls);
virtual void EmitInstruction(SUnit *SU);
virtual void AdvanceCycle();
-
+ virtual void Reset();
+
private:
/// EndDispatchGroup - Called when we are finishing a new dispatch group.
///
void EndDispatchGroup();
-
+
/// GetInstrType - Classify the specified powerpc opcode according to its
/// pipeline.
PPCII::PPC970_Unit GetInstrType(unsigned Opcode,
bool &isFirst, bool &isSingle,bool &isCracked,
bool &isLoad, bool &isStore);
-
- bool isLoadOfStoredAddress(unsigned LoadSize,
- SDValue Ptr1, SDValue Ptr2) const;
+
+ bool isLoadOfStoredAddress(uint64_t LoadSize, int64_t LoadOffset,
+ const Value *LoadValue) const;
};
} // end namespace llvm