1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
#include <stdio.h>
#include <stdlib.h>
enum {
R = -1, /* Invalid reference. */
Temp0 = 32, /* First temporary, below are machine registers. */
MaxPreds = 16, /* Maximum number of predecessors for a block. */
MaxBlks = 128,
MaxInss = 128,
MaxPhis = 128,
};
typedef int Ref;
typedef struct Ins Ins;
typedef struct Phi Phi;
typedef struct Blk Blk;
typedef enum Op Op;
typedef enum Jmp Jmp;
enum Op {
ONop,
OAdd,
OSub,
OSDiv,
OMod,
OParam,
OCall,
/* x86 instructions (reserved) */
XDiv,
};
enum Jmp {
JRet,
JJmp,
JCnd,
};
struct Ins {
Op op;
Ref res;
Ref arg0, arg1;
};
struct Phi {
Ref res;
int na;
Ref args[MaxPreds];
};
struct Blk {
int np;
int ni;
Phi *ps;
Ins *is;
struct {
Jmp ty;
Ref arg;
} jmp;
int suc0, suc1;
int dpth;
};
|
