/// \brief Maximum number of micro-ops that may be scheduled per cycle.
unsigned getIssueWidth() const { return SchedModel.IssueWidth; }
- /// \brief Number of cycles the OOO processor is expected to hide.
- unsigned getILPWindow() const { return SchedModel.ILPWindow; }
-
/// \brief Return the number of issue slots required for this MI.
unsigned getNumMicroOps(const MachineInstr *MI,
const MCSchedClassDesc *SC = 0) const;
return ResourceLCM;
}
+ /// \brief Number of micro-ops that may be buffered for OOO execution.
+ unsigned getMicroOpBufferSize() const { return SchedModel.MicroOpBufferSize; }
+
+ /// \brief Number of resource units that may be buffered for OOO execution.
+ /// \return The buffer size in resource units or -1 for unlimited.
+ int getResourceBufferSize(unsigned PIdx) const {
+ return SchedModel.getProcResource(PIdx)->BufferSize;
+ }
+
/// \brief Compute operand latency based on the available machine model.
///
- /// Computes and return the latency of the given data dependent def and use
+ /// 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.
- ///
- /// FindMin may be set to get the minimum vs. expected latency. Minimum
- /// latency is used for scheduling groups, while expected latency is for
- /// instruction cost and critical path.
unsigned computeOperandLatency(const MachineInstr *DefMI, unsigned DefOperIdx,
- const MachineInstr *UseMI, unsigned UseOperIdx,
- bool FindMin) const;
+ const MachineInstr *UseMI, unsigned UseOperIdx)
+ const;
/// \brief Compute the instruction latency based on the available machine
/// model.
/// This is typically one cycle.
unsigned computeOutputLatency(const MachineInstr *DefMI, unsigned DefIdx,
const MachineInstr *DepMI) const;
-
-private:
- /// getDefLatency is a helper for computeOperandLatency. Return the
- /// instruction's latency if operand lookup is not required.
- /// Otherwise return -1.
- int getDefLatency(const MachineInstr *DefMI, bool FindMin) const;
};
} // namespace llvm