+ 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(const MachineInstr *MI,
+ const MCSchedClassDesc *SC = 0) const;
+
+ /// \brief Get the number of kinds of resources for this target.
+ unsigned getNumProcResourceKinds() const {
+ return SchedModel.getNumProcResourceKinds();
+ }
+
+ /// \brief Get a processor resource by ID for convenience.
+ const MCProcResourceDesc *getProcResource(unsigned PIdx) const {
+ return SchedModel.getProcResource(PIdx);
+ }
+
+ typedef const MCWriteProcResEntry *ProcResIter;
+
+ // \brief Get an iterator into the processor resources consumed by this
+ // scheduling class.
+ ProcResIter getWriteProcResBegin(const MCSchedClassDesc *SC) const {
+ // The subtarget holds a single resource table for all processors.
+ return STI->getWriteProcResBegin(SC);
+ }
+ ProcResIter getWriteProcResEnd(const MCSchedClassDesc *SC) const {
+ return STI->getWriteProcResEnd(SC);
+ }
+
+ /// \brief Multiply the number of units consumed for a resource by this factor
+ /// to normalize it relative to other resources.
+ unsigned getResourceFactor(unsigned ResIdx) const {
+ return ResourceFactors[ResIdx];
+ }
+
+ /// \brief Multiply number of micro-ops by this factor to normalize it
+ /// relative to other resources.
+ unsigned getMicroOpFactor() const {
+ return MicroOpFactor;
+ }
+
+ /// \brief Multiply cycle count by this factor to normalize it relative to
+ /// other resources. This is the number of resource units per cycle.
+ unsigned getLatencyFactor() const {
+ return ResourceLCM;
+ }
+
+ /// \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.