- /// computeOperandLatency - Compute and return the latency of the given data
- /// dependent def and use when the operand indices are already known. UseMI
- /// may be NULL for an unknown user.
+ /// \brief Return true if this machine model includes cycle-to-cycle itinerary
+ /// data.
+ ///
+ /// This models scheduling at each stage in the processor pipeline.
+ bool hasInstrItineraries() const;
+
+ const InstrItineraryData *getInstrItineraries() const {
+ if (hasInstrItineraries())
+ return &InstrItins;
+ return 0;
+ }
+
+ /// \brief Identify the processor corresponding to the current subtarget.
+ unsigned getProcessorID() const { return SchedModel.getProcessorID(); }
+
+ /// \brief Maximum number of micro-ops that may be scheduled per cycle.
+ unsigned getIssueWidth() const { return SchedModel.IssueWidth; }
+
+ /// \brief Return the number of issue slots required for this MI.
+ unsigned getNumMicroOps(MachineInstr *MI) const;
+
+ /// \brief Compute operand latency based on the available machine model.
+ ///
+ /// Computes and return the latency of the given data dependent def and use
+ /// when the operand indices are already known. UseMI may be NULL for an
+ /// unknown user.