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
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
#include "common.h"
#include "ir.h"
extern struct xcon conht[];
static const char *clsname[] = {
"?", "i4", "i8", "ptr", "f4", "f8"
};
static void
prityp(union irtype typ)
{
if (!typ.isagg)
efmt(clsname[typ.cls]);
else {
const struct typedata *td = &typedata[typ.dat];
const char *tag = td->t == TYSTRUCT ? "struct" : "union";
if (ttypenames[td->id])
efmt("%s.%s.%d", tag, ttypenames[td->id], td->id);
else
efmt("%s.%d", tag, td->id);
}
}
static const char *builtinname[] = {
"?\??",
#define _(b,...) #b,
#include "builtin.def"
#undef _
};
static void
dumpref(enum op o, union ref ref)
{
struct xcon *con;
switch (ref.t) {
case RTMP: efmt("%%%d", ref.idx); break;
case RARG: efmt("%%arg%d", ref.idx); break;
case RICON:
if (o == Obuiltin) efmt("\"%s\"", builtinname[ref.i]);
else efmt("%d", ref.i);
break;
case RXCON:
con = &conht[ref.idx];
if (con->issym) efmt("$%s", con->sym);
else switch (con->cls) {
case KI4: efmt("%d", con->i4); break;
case KI8: efmt("%ld", con->i8); break;
case KPTR: efmt("%'x", con->i8); break;
case KF4: efmt("%fs", con->fs); break;
case KF8: efmt("%fd", con->fd); break;
default: assert(0);
}
break;
case RMORE:
if (o == Ocall || o == Obuiltin) {
extern vec_of(struct call) calls;
struct call *call = &calls.p[ref.idx];
for (int i = 0; i < call->narg; ++i) {
if (i > 0) efmt(", ");
if (call->vararg == i)
efmt("..., ");
prityp(call->typs[i]);
efmt(" ");
dumpref(0, call->args[i]);
}
} else if (o == Ophi) {
extern vec_of(struct phi) phis;
struct phi *phi = &phis.p[ref.idx];
for (int i = 0; i < phi->n; ++i) {
if (i > 0) efmt(", ");
efmt("[.L%d ", phi->blk[i]->id);
dumpref(0, phi->ref[i]);
efmt("]");
}
} else assert(0);
break;
default: assert(!"ref");
}
}
extern struct instr instr[];
static const char *opname[] = {
"?\??",
#define _(o,...) #o,
#include "op.def"
#undef _
};
static const uchar opnarg[] = {
0,
#define _(o,n) n,
#include "op.def"
#undef _
};
static void
dumpinst(const struct instr *ins)
{
int i;
efmt(" ");
if (ins->cls) {
efmt("%s %%%d", clsname[ins->cls], ins - instr);
if (ins->reg) efmt("(%ls)", mctarg->rnames[ins->reg - 1]);
efmt(" = ");
}
efmt("%s ", opname[ins->op]);
for (i = 0; i < opnarg[ins->op]; ++i) {
if (i) efmt(", ");
dumpref(ins->op, (&ins->l)[i]);
}
efmt("\n");
}
static void
dumpblk(struct function *fn, struct block *blk)
{
static const char *jnames[] = { 0, "b", "b", "ret", "ret" };
static const uchar jnarg[] = { 0, 0, 1, 0, 1 };
efmt(" .L%d:\n", blk->id);
for (int i = 0; i < blk->phi.n; ++i) {
dumpinst(&instr[blk->phi.p[i]]);
}
for (int i = 0; i < blk->ins.n; ++i) {
dumpinst(&instr[blk->ins.p[i]]);
}
efmt(" %s ", jnames[blk->jmp.t]);
if (jnarg[blk->jmp.t]) {
if (blk->jmp.t == Jrets) {
prityp(mkirtype(fn->retty));
efmt(" ");
}
dumpref(0, blk->jmp.arg);
if (blk->s1) efmt(", ");
}
if (blk->s1 && blk->s2) efmt(".L%d, .L%d", blk->s1->id, blk->s2->id);
else if (blk->s1) efmt(".L%d", blk->s1->id);
efmt("\n");
}
void
irdump(struct function *fn, const char *fname)
{
struct block *blk;
efmt("function %s : %ty\n", fname, fn->fnty);
blk = fn->entry;
do {
dumpblk(fn, blk);
} while ((blk = blk->lnext) != fn->entry);
}
/* vim:set ts=3 sw=3 expandtab: */
|
