#ifndef COMPILER_COPYPROPAGATION_H
#define COMPILER_COPYPROPAGATION_H

#include "compiler/common.h"
#include "compiler/UseDefChains.h"

typedef int (*IsCandidateFunc)(PCode *);
typedef int (*PropagatesToUseFunc)(int a, int b);
typedef void (*PropagateAndFinishFunc)(int id);

#ifdef __MWERKS__
#pragma options align=mac68k
#endif
typedef struct Propagation {
    IsCandidateFunc is_candidate;
    PropagatesToUseFunc propagatestouse;
    PropagateAndFinishFunc propagateandfinish;
    char *name;
    char *nameplural;
    char *format;
    Boolean computesUseDefChains;
} Propagation;

typedef struct Candidate {
    PCode *pcode;
    RegUseOrDef *list;
} Candidate;

typedef struct PropInfo {
    UInt32 *vec0;
    UInt32 *vec4;
    UInt32 *vec8;
    UInt32 *vecC;
} PropInfo;
#ifdef __MWERKS__
#pragma options align=reset
#endif

extern int propagatedcopies;
extern int propagated_instructions;
extern int recursive_propagation;
extern int number_of_candidates;
extern Candidate *Candidates;
extern PropInfo *propinfo;
extern int *ncandidatesinblock;
extern int *firstcandidateinblock;

extern int precedes(PCode *a, PCode *b);
extern void propagateinstructions(Object *proc, Propagation *config, int passCount, Boolean localflag);
extern void propagatecopyinstructions(Object *proc, int flag);

#endif