5 File name: ir/ana/pto_init.c
6 Purpose: Initialisation Functions
9 Created: Sat Nov 13 19:35:27 CET 2004
11 Copyright: (c) 1999-2004 Universität Karlsruhe
12 Licence: This file is protected by the GPL - GNU GENERAL PUBLIC LICENSE.
20 pto_init: Initialisation Functions
27 # include "pto_init.h"
28 # include "pto_debug.h"
29 # include "pto_comp.h"
30 # include "pto_name.h"
31 # include "pto_util.h"
33 # include "typewalk.h"
40 # define obstack_chunk_alloc xmalloc
41 # define obstack_chunk_free free
43 /* Local Data Types: */
44 typedef struct init_env_str
49 typedef struct reset_env_str
54 /* Local Variables: */
55 extern struct obstack *qset_obst; /* from pto_name */
57 static struct obstack *pto_obst = NULL; /* all pto_t's go onto this one */
59 /* Local Prototypes: */
61 /* ===================================================
63 =================================================== */
64 /* Allocate a new pto */
65 static pto_t *new_pto (ir_node *node)
67 pto_t *pto = obstack_alloc (pto_obst, sizeof (pto_t));
68 pto->values = qset_new (N_INITIAL_OJBS, qset_obst);
73 /* Allocate a new alloc_pto */
74 static alloc_pto_t *new_alloc_pto (ir_node *alloc, int n_ctxs)
77 alloc_pto_t *alloc_pto = obstack_alloc (pto_obst, sizeof (alloc_pto_t));
80 assert (op_Alloc == get_irn_op(alloc));
82 tp = get_Alloc_type (alloc);
84 alloc_pto->ptos = (pto_t**) obstack_alloc (pto_obst, n_ctxs * sizeof (pto_t*));
86 for (i = 0; i < n_ctxs; i ++) {
87 desc_t *desc = new_name (tp, alloc, i);
88 alloc_pto->ptos [i] = new_pto (alloc);
89 qset_insert (alloc_pto->ptos [i]->values, desc);
95 /* Allocate a new pto for a symconst */
96 static pto_t* new_symconst_pto (ir_node *symconst)
102 assert (op_SymConst == get_irn_op(symconst));
104 pto = new_pto (symconst);
105 ent = get_SymConst_entity (symconst);
108 const char *ent_name = (char*) get_entity_name (ent);
109 const char *own_name = (char*) get_type_name (get_entity_owner (ent));
110 HERE3 ("start", own_name, ent_name);
112 /* Ok, so if the symconst has a pointer-to-mumble, it's some address
113 calculation, but if it's the mumble itself, it's just the same,
114 except it's presumably a constant of mumble. In any case, we need to
115 branch on this. "How's that for object fucking oriented? --jwz" */
116 if (is_Pointer_type (get_entity_type (ent))) {
117 desc = new_ent_name (ent);
118 } else if (is_Class_type (get_entity_type (ent))) {
119 desc = new_name (get_entity_type (ent), symconst, -1);
121 fprintf (stderr, "%s: not handled: %s[%li] (\"%s\")\n",
123 get_op_name (get_irn_op (symconst)),
124 get_irn_node_nr (symconst),
125 get_entity_name (ent));
126 assert (0 && "something not handled");
129 qset_insert (pto->values, desc);
131 /* HERE3 ("end", own_name, ent_name); */
136 /* Helper to pto_init --- clear the link fields of class types */
137 static void clear_type_link (type_or_ent *thing, void *_unused)
139 if (is_type (thing)) {
140 type *tp = (type*) thing;
142 if (is_Class_type (tp)) {
143 DBGPRINT (1, (stdout, "%s (\"%s\")\n",
145 get_type_name (tp)));
147 set_type_link (tp, NULL);
149 } else if (is_entity (thing)) {
150 entity *ent = (entity*) thing;
152 DBGPRINT (1, (stdout, "%s (\"%s\")\n",
154 get_entity_name (ent)));
156 set_entity_link (ent, NULL);
160 /* Helper to pto_init_graph --- clear the links of the given node */
161 static void clear_node_link (ir_node *node, void *_unused)
163 set_irn_link (node, NULL);
166 /* Helper to pto_init_graph --- clear the links of all nodes */
167 static void clear_graph_links (ir_graph *graph)
169 irg_walk_graph (graph, clear_node_link, NULL, NULL);
172 /* Reset ALL the pto values for a new pass */
173 static void reset_node_pto (ir_node *node, void *env)
175 reset_env_t *reset_env = (reset_env_t*) env;
176 int ctx_idx = reset_env->ctx_idx;
177 opcode op = get_irn_opcode (node);
179 /* HERE ("start"); */
184 case (iro_Block): /* END BLOCK only */
186 /* allocate 'empty' pto values */
187 pto_t *pto = new_pto (node);
188 set_node_pto (node, pto);
192 /* set alloc to 'right' current pto */
193 alloc_pto_t *alloc_pto = (alloc_pto_t*) get_irn_link (node);
194 alloc_pto->curr_pto = alloc_pto->ptos [ctx_idx];
196 DBGPRINT (1, (stdout, "%s: setting pto of \"%s[%li]\" for ctx %i\n",
202 assert (alloc_pto->curr_pto);
205 case (iro_SymConst): {
206 /* nothing, leave as-is */
210 /* basically, nothing */
211 DBGPRINT (2, (stdout, "%s: resetting pto of \"%s[%li]\"\n",
215 set_node_pto (node, NULL);
222 /* Initialise primary name sources */
223 static void init_pto (ir_node *node, void *env)
225 init_env_t *init_env = (init_env_t*) env;
226 int n_ctxs = init_env->n_ctxs;
228 opcode op = get_irn_opcode (node);
231 case (iro_SymConst): {
232 if (mode_is_reference (get_irn_mode (node))) {
233 entity *ent = get_SymConst_entity (node);
234 type *tp = get_entity_type (ent);
235 if (is_Class_type (tp) || is_Pointer_type (tp)) {
236 pto_t *symconst_pto = new_symconst_pto (node);
237 set_node_pto (node, symconst_pto);
240 DBGPRINT (1, (stdout, "%s: new name \"%s\" for \"%s[%li]\"\n",
242 get_entity_name (ent),
250 alloc_pto_t *alloc_pto = new_alloc_pto (node, n_ctxs);
253 set_alloc_pto (node, alloc_pto);
255 tp = get_Alloc_type (node); /* debugging only */
256 DBGPRINT (1, (stdout, "%s: %i names \"%s\" for \"%s[%li]\"\n",
265 tarval *tv = get_Const_tarval (node);
267 /* only need 'NULL' pointer constants */
268 if (mode_P == get_tarval_mode (tv)) {
269 if (get_tarval_null (mode_P) == tv) {
270 pto_t *pto = new_pto (node);
271 set_node_pto (node, pto);
278 /* nothing --- handled by reset_node_pto on each pass */
287 /* Initialise the given graph for a new pass run */
288 static void pto_init_graph_allocs (ir_graph *graph)
290 graph_info_t *ginfo = ecg_get_info (graph);
291 init_env_t *init_env;
293 init_env = xmalloc (sizeof (init_env_t));
294 init_env->n_ctxs = ginfo->n_ctxs;
296 /* HERE ("start"); */
298 irg_walk_graph (graph, init_pto, NULL, init_env);
301 memset (init_env, 0x00, sizeof (init_env_t));
305 /* ===================================================
306 Exported Implementation:
307 =================================================== */
308 /* "Fake" the arguments to the main method */
309 void fake_main_args (ir_graph *graph)
311 /* HERE ("start"); */
313 entity *ent = get_irg_entity (graph);
314 type *mtp = get_entity_type (ent);
315 ir_node **args = find_irg_args (graph);
316 type *ctp = get_method_param_type (mtp, 1); /* ctp == char[]*[]* */
320 /* 'main' has signature 'void(int, char[]*[]*)' */
321 assert (NULL == args [2]);
323 assert (is_Pointer_type (ctp));
325 ctp = get_pointer_points_to_type (ctp); /* ctp == char[]*[] */
327 assert (is_Array_type (ctp));
329 arg_desc = new_name (ctp, args [1], -1);
330 arg_pto = new_pto (args [1]);
331 /* todo: simulate 'store' to arg1[] ?!? */
332 qset_insert (arg_pto->values, arg_desc);
334 set_node_pto (args [1], arg_pto);
336 DBGPRINT (1, (stdout, "%s:%i (%s[%li])\n",
337 __FUNCTION__, __LINE__,
338 OPNAME (args [1]), OPNUM (args [1])));
340 # ifdef TEST_MAIN_TYPE
341 ctp = get_array_element_type (ctp); /* ctp == char[]* */
343 assert (is_Pointer_type (ctp));
345 ctp = get_pointer_points_to_type (ctp); /* ctp == char[] */
347 assert (is_Array_type (ctp));
349 ctp = get_array_element_type (ctp); /* ctp == char */
351 assert (is_primitive_type (ctp));
352 # endif /* defined TEST_MAIN_TYPE */
357 /* Initialise the Init module */
358 void pto_init_init ()
360 pto_obst = (struct obstack*) xmalloc (sizeof (struct obstack));
362 obstack_init (pto_obst);
365 /* Cleanup the Init module */
366 void pto_init_cleanup ()
368 obstack_free (pto_obst, NULL);
369 memset (pto_obst, 0x00, sizeof (struct obstack));
375 /* Initialise the Names of the Types/Entities */
376 void pto_init_type_names ()
378 /* HERE ("start"); */
379 type_walk (clear_type_link, NULL, NULL);
383 /* Initialise the given graph for a new pass run */
384 void pto_init_graph (ir_graph *graph)
387 graph_info_t *ginfo = ecg_get_info (graph);
388 const int n_ctxs = ginfo->n_ctxs;
390 /* only for debugging stuff: */
391 entity *ent = get_irg_entity (graph);
392 const char *ent_name = (char*) get_entity_name (ent);
393 const char *own_name = (char*) get_type_name (get_entity_owner (ent));
395 DBGPRINT (2, (stdout, "%s: init \"%s.%s\" for %i ctxs\n",
397 own_name, ent_name, n_ctxs));
399 /* HERE ("start"); */
401 clear_graph_links (graph);
402 pto_init_graph_allocs (graph);
406 assert (NULL == get_irg_proj_args (graph));
407 proj_args = find_irg_args (graph);
408 set_irg_proj_args (graph, proj_args);
409 assert (proj_args == get_irg_proj_args (graph));
412 /* Reset the given graph for a new pass run */
413 void pto_reset_graph_pto (ir_graph *graph, int ctx_idx)
415 reset_env_t *reset_env;
417 reset_env = (reset_env_t*) xmalloc (sizeof (reset_env_t));
418 reset_env->ctx_idx = ctx_idx;
420 /* HERE ("start"); */
422 irg_walk_graph (graph, reset_node_pto, NULL, reset_env);
425 memset (reset_env, 0x00, sizeof (reset_env_t));
432 Revision 1.17 2005/01/14 14:12:51 liekweg
433 prepare gnu extension fix
435 Revision 1.16 2005/01/14 13:36:50 liekweg
436 don't put environments on the stack; handle consts
438 Revision 1.15 2005/01/10 17:26:34 liekweg
439 fixup printfs, don't put environments on the stack
441 Revision 1.14 2005/01/05 14:25:54 beck
442 renames all is_x*_type() functions to is_X*_type() to prevent name clash with EDG fronten
444 Revision 1.13 2004/12/21 15:07:55 beck
445 removed C99 contructs
446 removed unnecessary allocation
447 removed use of mode_P, use mode_is_reference() instead
448 removed handling of Const with pointer tarvals, these constructs are removed
450 Revision 1.12 2004/12/20 17:41:14 liekweg
453 Revision 1.11 2004/12/20 17:34:35 liekweg
454 fix recursion handling
456 Revision 1.10 2004/12/15 13:31:00 liekweg
457 store ctx idx in names
459 Revision 1.9 2004/12/15 09:18:18 liekweg
462 Revision 1.8 2004/12/02 16:17:51 beck
463 fixed config.h include
465 Revision 1.7 2004/11/30 14:47:54 liekweg
466 fix initialisation; do correct iteration
468 Revision 1.6 2004/11/26 16:00:41 liekweg
469 recognize class consts vs. ptr-to-class consts
471 Revision 1.5 2004/11/24 14:53:56 liekweg
474 Revision 1.4 2004/11/20 21:21:56 liekweg
475 Finalise initialisation
477 Revision 1.3 2004/11/18 16:37:07 liekweg