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#ifndef COMPILER_IROLOOP_H
#define COMPILER_IROLOOP_H
#include "IrOptimizer.h"
#include "BitVector.h"
typedef enum IROLoopIndFlags {
LoopInd_HasMod = 1,
LoopInd_HasDiv = 2,
LoopInd_4 = 4,
LoopInd_8 = 8
} IROLoopIndFlags;
typedef enum IROLoopFlags {
LoopFlags_1 = 1, // LP_INDUCTION_AT_LEFT
LP_LOOP_HAS_CALLS = 2,
LP_LOOP_HAS_CNTRLFLOW = 4,
LoopFlags_8 = 8, // LP_HAS_NONASSIGN
LP_INDUCTION_NOT_FOUND = 0x10,
LP_IFEXPR_NON_CANONICAL = 0x20,
LP_HAS_MULTIPLE_INDUCTIONS = 0x40,
LP_LOOP_HDR_HAS_SIDEEFFECTS = 0x80,
LP_LOOP_STEP_ISADD = 0x100,
LoopFlags_200 = 0x200, // LP_HEADER_FOLLOWS_UPDATE?
LP_LOOP_STEP_ISPOS = 0x400,
LoopFlags_800 = 0x800, // LP_IND_USED_IN_LOOP
LoopFlags_1000 = 0x1000, // LP_HAS_MULTIPLE_EXITS
LoopFlags_2000 = 0x2000, // inverse of LP_LOOP_STEP_ISADD?
LP_LOOP_STEP_ISNEG = 0x4000,
LP_LOOP_HAS_ASM = 0x8000,
LoopFlags_10000 = 0x10000, // LP_WHILE_LOOP
LoopFlags_20000 = 0x20000, // maybe LP_RECURSIVE_LOOP?
LoopFlags_40000 = 0x40000 // LP_IS_REDUCTION_CAND
} IROLoopFlags;
#ifdef __MWERKS__
#pragma options align=mac68k
#endif
typedef struct IROLoopInd {
IROLoopIndFlags flags;
VarRecord *var;
IRONode *fnode;
IROLinear *nd;
SInt32 addConst;
IROLinear *addNode;
struct IROLoopInd *next;
} IROLoopInd;
struct IROLoop {
SInt32 flags;
IRONode *fnode;
int x8;
IRONode *xC;
IRONode *x10;
IROLinear *nd14; // assignment expression that sets the initial value of induction
IROLinear *nd18; // ifexpr?
IROLoopInd *induction;
int index20;
int index24;
CInt64 x28;
CInt64 x30;
int sizeBySomeMeasurement;
};
typedef enum IROLoopMemRefFlags {
LoopMemRef_1 = 1,
LoopMemRef_2 = 2,
LoopMemRef_4 = 4,
LoopMemRef_8 = 8,
LoopMemRef_10 = 0x10
} IROLoopMemRefFlags;
typedef struct IROLoopMemRef {
IROLoopMemRefFlags flags;
IROLinear *nd;
IROElmList *list;
IROAddrRecord *rec;
struct IROLoopMemRef *next;
} IROLoopMemRef;
#ifdef __MWERKS__
#pragma options align=reset
#endif
extern IRONode *LoopNode;
extern Boolean ConditionalHeaderAtBottom;
extern IROLoopInd *FirstInd;
extern BitVector *InLoop;
extern IROList IRO_InitLList;
extern BitVector *InLoop_Exits;
extern BitVector *InLoop_Tails;
extern UInt32 LoopExitNumber;
extern UInt32 LoopTailNum;
extern IRONode *LoopExitSuccessor;
extern IRONode *LoopTail;
extern IROLoopMemRef *IRO_LoopMemRefFirst;
extern IROLoopMemRef *IRO_LoopMemRefCurrent;
extern void FindMustReach(void);
extern void FindMustReach1(IRONode *checkfnode);
extern void AddPreds(IRONode *fnode);
extern void IncLoopDepth(void);
extern void IRO_SetLoopDepth(void);
extern void IRO_FindLoops(void);
extern void ComputeLoopKills(void);
extern void ComputeLoopInvariance(void);
extern void ComputeLoopInduction(void);
extern void FindAssignmenttoInductionVar(IROLoop *loop, IRONode *fnode);
extern IROLoop *ExtractLoopInfo(IRONode *fnode);
extern CLabel *BuildLabel(IROList *list);
#endif
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