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// $Id$ -*- C++ -*-
//***************************************************************************
// File:
// InstrScheduling.h
//
// Purpose:
//
// History:
// 7/23/01 - Vikram Adve - Created
//***************************************************************************
#ifndef LLVM_CODEGEN_INSTR_SCHEDULING_H
#define LLVM_CODEGEN_INSTR_SCHEDULING_H
#include "llvm/Support/CommandLine.h"
#include "llvm/CodeGen/MachineInstr.h"
class Method;
class SchedulingManager;
class TargetMachine;
class MachineSchedInfo;
// Debug option levels for instruction scheduling
enum SchedDebugLevel_t {
Sched_NoDebugInfo,
Sched_PrintMachineCode,
Sched_PrintSchedTrace,
Sched_PrintSchedGraphs,
};
extern cl::Enum<SchedDebugLevel_t> SchedDebugLevel;
//---------------------------------------------------------------------------
// Function: ScheduleInstructionsWithSSA
//
// Purpose:
// Entry point for instruction scheduling on SSA form.
// Schedules the machine instructions generated by instruction selection.
// Assumes that register allocation has not been done, i.e., operands
// are still in SSA form.
//---------------------------------------------------------------------------
bool ScheduleInstructionsWithSSA(Method* method, const TargetMachine &Target);
//---------------------------------------------------------------------------
// Function: ScheduleInstructions
//
// Purpose:
// Entry point for instruction scheduling on machine code.
// Schedules the machine instructions generated by instruction selection.
// Assumes that register allocation has been done.
//---------------------------------------------------------------------------
// Not implemented yet.
bool ScheduleInstructions (Method* method,
const TargetMachine &Target);
//---------------------------------------------------------------------------
// Function: instrIsFeasible
//
// Purpose:
// Used by the priority analysis to filter out instructions
// that are not feasible to issue in the current cycle.
// Should only be used during schedule construction..
//---------------------------------------------------------------------------
bool instrIsFeasible (const SchedulingManager& S,
MachineOpCode opCode);
#endif
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