-
Notifications
You must be signed in to change notification settings - Fork 138
/
imc.c
292 lines (199 loc) · 5.86 KB
/
imc.c
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
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
/*
* Copyright (C) 2002-2009, Parrot Foundation.
*/
/*
=head1 NAME
compilers/imcc/imc.c
=head1 DESCRIPTION
Routines for handling imc_units, which represent subs.
Moved all register allocation and spill code to reg_alloc.c
=head2 Functions
=over 4
=cut
*/
#include <string.h>
#include "imc.h"
#include "optimizer.h"
/* HEADERIZER HFILE: compilers/imcc/imc.h */
/* HEADERIZER BEGIN: static */
/* Don't modify between HEADERIZER BEGIN / HEADERIZER END. Your changes will be lost. */
static void imc_free_unit(ARGMOD(imc_info_t * imcc), ARGMOD(IMC_Unit *unit))
__attribute__nonnull__(1)
__attribute__nonnull__(2)
FUNC_MODIFIES(* imcc)
FUNC_MODIFIES(*unit);
PARROT_CANNOT_RETURN_NULL
PARROT_MALLOC
static IMC_Unit * imc_new_unit(ARGMOD(imc_info_t * imcc), IMC_Unit_Type t)
__attribute__nonnull__(1)
FUNC_MODIFIES(* imcc);
#define ASSERT_ARGS_imc_free_unit __attribute__unused__ int _ASSERT_ARGS_CHECK = (\
PARROT_ASSERT_ARG(imcc) \
, PARROT_ASSERT_ARG(unit))
#define ASSERT_ARGS_imc_new_unit __attribute__unused__ int _ASSERT_ARGS_CHECK = (\
PARROT_ASSERT_ARG(imcc))
/* Don't modify between HEADERIZER BEGIN / HEADERIZER END. Your changes will be lost. */
/* HEADERIZER END: static */
#define COMPILE_IMMEDIATE 1
/*
=item C<void imc_compile_all_units(imc_info_t * imcc)>
Compiles all imc_units, and free all memory of instructions and structures
afterwards.
=cut
*/
void
imc_compile_all_units(ARGMOD(imc_info_t * imcc))
{
ASSERT_ARGS(imc_compile_all_units)
/* compile all units created during the parse */
IMC_Unit *unit;
#if ! COMPILE_IMMEDIATE
for (unit = imcc->imc_units; unit;) {
IMC_Unit * const unit_next = unit->next;
imc_compile_unit(imcc, unit);
unit = unit_next;
}
#endif
emit_close(imcc, NULL);
/* All done with compilation, now free all memory allocated
* for instructions and other structures. */
for (unit = imcc->imc_units; unit;) {
IMC_Unit * const unit_next = unit->next;
Instruction *ins;
for (ins = unit->instructions; ins;) {
Instruction * const ins_next = ins->next;
free_ins(ins);
ins = ins_next;
}
imc_free_unit(imcc, unit);
unit = unit_next;
}
imcc->imc_units = NULL;
imcc->cur_unit = NULL;
imcc->last_unit = NULL;
}
/*
=item C<void imc_compile_unit(imc_info_t * imcc, IMC_Unit *unit)>
Compiles each unit in IMCC. This is the main loop of the compiler; it operates
on a single compilation unit at a time.
=cut
*/
void
imc_compile_unit(ARGMOD(imc_info_t * imcc), ARGIN(IMC_Unit *unit))
{
ASSERT_ARGS(imc_compile_unit)
/* Not much here for now except the allocator */
imcc->cur_unit = unit;
imc_reg_alloc(imcc, unit);
emit_flush(imcc, NULL, unit);
}
/*
=item C<void imc_cleanup(imc_info_t * imcc, void *yyscanner)>
Cleans up the compiler state in preparation for another compiler invocation.
=cut
*/
void
imc_cleanup(ARGMOD(imc_info_t * imcc), ARGIN_NULLOK(void *yyscanner))
{
ASSERT_ARGS(imc_cleanup)
IMCC_pop_parser_state(imcc, yyscanner);
clear_globals(imcc);
mem_sys_free(imcc->ghash.data);
imcc->ghash.data = NULL;
if (imcc->state)
imcc->state->file = STRINGNULL;
imcc->last_unit = NULL;
}
/*
=item C<static IMC_Unit * imc_new_unit(imc_info_t * imcc, IMC_Unit_Type t)>
Creates a new IMC_Unit of the given IMC_Unit_Type C<t>.
=cut
*/
PARROT_CANNOT_RETURN_NULL
PARROT_MALLOC
static IMC_Unit *
imc_new_unit(ARGMOD(imc_info_t * imcc), IMC_Unit_Type t)
{
ASSERT_ARGS(imc_new_unit)
IMC_Unit * const unit = mem_gc_allocate_zeroed_typed(imcc->interp, IMC_Unit);
create_symhash(imcc, &unit->hash);
unit->type = t;
return unit;
}
/*
=item C<IMC_Unit * imc_open_unit(imc_info_t * imc_info, IMC_Unit_Type t)>
Creates a new IMC_Unit and "open" it for construction. This sets the current
state of the parser. You can close the unit later while retaining all the
current state.
=cut
*/
PARROT_CANNOT_RETURN_NULL
IMC_Unit *
imc_open_unit(ARGMOD(imc_info_t * imc_info), IMC_Unit_Type t)
{
ASSERT_ARGS(imc_open_unit)
IMC_Unit * const unit = imc_new_unit(imc_info, t);
if (!imc_info->imc_units)
imc_info->imc_units = unit;
if (!imc_info->ghash.data)
create_symhash(imc_info, &imc_info->ghash);
unit->prev = imc_info->last_unit;
if (imc_info->last_unit)
imc_info->last_unit->next = unit;
imc_info->last_unit = unit;
imc_info->n_comp_units++;
unit->file = imc_info->state->file;
unit->pasm_file = imc_info->state->pasm_file;
return unit;
}
/*
=item C<void imc_close_unit(imc_info_t * imcc, IMC_Unit *unit)>
Closes a unit from compilation. This does not destroy the unit, but leaves it
on the list of units.
=cut
*/
void
imc_close_unit(ARGMOD(imc_info_t * imcc), ARGIN_NULLOK(IMC_Unit *unit))
{
ASSERT_ARGS(imc_close_unit)
#if COMPILE_IMMEDIATE
if (unit)
imc_compile_unit(imcc, unit);
#endif
imcc->cur_unit = NULL;
}
/*
=item C<static void imc_free_unit(imc_info_t * imcc, IMC_Unit *unit)>
Frees an IMC_Unit and all of its associated memory.
=cut
*/
static void
imc_free_unit(ARGMOD(imc_info_t * imcc), ARGMOD(IMC_Unit *unit))
{
ASSERT_ARGS(imc_free_unit)
free_reglist(unit);
/* and cfg ... */
clear_basic_blocks(unit);
if (!imcc->n_comp_units)
IMCC_fatal(imcc, 1, "imc_free_unit: non existent unit\n");
imcc->n_comp_units--;
clear_locals(unit);
if (unit->_namespace && unit->owns_namespace)
free_sym(unit->_namespace);
if (unit->vtable_name)
mem_sys_free(unit->vtable_name);
if (unit->instance_of)
mem_sys_free(unit->instance_of);
mem_sys_free(unit->hash.data);
mem_sys_free(unit);
}
/*
=back
=cut
*/
/*
* Local variables:
* c-file-style: "parrot"
* End:
* vim: expandtab shiftwidth=4 cinoptions='\:2=2' :
*/