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
33 # include "pto_init.h"
34 # include "pto_debug.h"
35 # include "pto_comp.h"
36 # include "pto_name.h"
37 # include "pto_util.h"
39 # include "typewalk.h"
47 # define obstack_chunk_alloc xmalloc
48 # define obstack_chunk_free free
50 /* Local Data Types: */
51 typedef struct init_env_str
56 typedef struct reset_env_str
61 /* Local Variables: */
62 extern struct obstack *qset_obst; /* from pto_name */
64 static struct obstack *pto_obst = NULL; /* all pto_t's go onto this one */
66 /* Local Prototypes: */
68 /* ===================================================
70 =================================================== */
71 /** Allocate a new pto */
72 static pto_t *new_pto (ir_node *node)
74 pto_t *pto = obstack_alloc (pto_obst, sizeof (pto_t));
75 pto->values = qset_new (N_INITIAL_OJBS, qset_obst);
80 /** Allocate a new alloc_pto */
81 static alloc_pto_t *new_alloc_pto (ir_node *alloc, int n_ctxs)
84 alloc_pto_t *alloc_pto = obstack_alloc (pto_obst, sizeof (alloc_pto_t));
87 assert (op_Alloc == get_irn_op(alloc));
89 tp = get_Alloc_type (alloc);
91 alloc_pto->ptos = (pto_t**) obstack_alloc (pto_obst, n_ctxs * sizeof (pto_t*));
93 for (i = 0; i < n_ctxs; i ++) {
94 desc_t *desc = new_name (tp, alloc, i);
95 alloc_pto->ptos [i] = new_pto (alloc);
96 qset_insert (alloc_pto->ptos [i]->values, desc);
102 /** Allocate a new pto for a symconst */
103 static pto_t* new_symconst_pto (ir_node *symconst)
109 assert (op_SymConst == get_irn_op(symconst));
111 pto = new_pto (symconst);
112 ent = get_SymConst_entity (symconst);
115 const char *ent_name = (char*) get_entity_name (ent);
116 const char *own_name = (char*) get_type_name (get_entity_owner (ent));
117 HERE3 ("start", own_name, ent_name);
119 /* Ok, so if the symconst has a pointer-to-mumble, it's some address
120 calculation, but if it's the mumble itself, it's just the same,
121 except it's presumably a constant of mumble. In any case, we need to
122 branch on this. "How's that for object fucking oriented? --jwz" */
123 if (is_Pointer_type (get_entity_type (ent))) {
124 desc = new_ent_name (ent);
125 } else if (is_Class_type (get_entity_type (ent))) {
126 desc = new_name (get_entity_type (ent), symconst, -1);
128 fprintf (stderr, "%s: not handled: %s[%li] (\"%s\")\n",
130 get_op_name (get_irn_op (symconst)),
131 get_irn_node_nr (symconst),
132 get_entity_name (ent));
133 assert (0 && "something not handled");
136 qset_insert (pto->values, desc);
138 /* HERE3 ("end", own_name, ent_name); */
143 /* Helper to pto_init --- clear the link fields of class types */
144 static void clear_type_link (type_or_ent *thing, void *_unused)
146 if (is_type (thing)) {
147 type *tp = (type*) thing;
149 if (is_Class_type (tp)) {
150 DBGPRINT (1, (stdout, "%s (\"%s\")\n",
152 get_type_name (tp)));
154 set_type_link (tp, NULL);
156 } else if (is_entity (thing)) {
157 entity *ent = (entity*) thing;
159 DBGPRINT (1, (stdout, "%s (\"%s\")\n",
161 get_entity_name (ent)));
163 set_entity_link (ent, NULL);
167 /** Helper to pto_init_graph --- clear the links of the given node */
168 static void clear_node_link (ir_node *node, void *_unused)
170 set_irn_link (node, NULL);
173 /** Helper to pto_init_graph --- clear the links of all nodes */
174 static void clear_graph_links (ir_graph *graph)
176 irg_walk_graph (graph, clear_node_link, NULL, NULL);
179 /** Reset ALL the pto values for a new pass */
180 static void reset_node_pto (ir_node *node, void *env)
182 reset_env_t *reset_env = (reset_env_t*) env;
183 int ctx_idx = reset_env->ctx_idx;
184 opcode op = get_irn_opcode (node);
186 /* HERE ("start"); */
191 case (iro_Block): /* END BLOCK only */
193 /* allocate 'empty' pto values */
194 pto_t *pto = new_pto (node);
195 set_node_pto (node, pto);
199 /* set alloc to 'right' current pto */
200 alloc_pto_t *alloc_pto = (alloc_pto_t*) get_irn_link (node);
201 alloc_pto->curr_pto = alloc_pto->ptos [ctx_idx];
203 DBGPRINT (1, (stdout, "%s: setting pto of \"%s[%li]\" for ctx %i\n",
209 assert (alloc_pto->curr_pto);
212 case (iro_SymConst): {
213 /* nothing, leave as-is */
217 /* basically, nothing */
218 DBGPRINT (2, (stdout, "%s: resetting pto of \"%s[%li]\"\n",
222 set_node_pto (node, NULL);
229 /** Initialise primary name sources */
230 static void init_pto (ir_node *node, void *env)
232 init_env_t *init_env = (init_env_t*) env;
233 int n_ctxs = init_env->n_ctxs;
235 opcode op = get_irn_opcode (node);
238 case (iro_SymConst): {
239 if (mode_is_reference (get_irn_mode (node))) {
240 entity *ent = get_SymConst_entity (node);
241 type *tp = get_entity_type (ent);
242 if (is_Class_type (tp) || is_Pointer_type (tp)) {
243 pto_t *symconst_pto = new_symconst_pto (node);
244 set_node_pto (node, symconst_pto);
247 DBGPRINT (1, (stdout, "%s: new name \"%s\" for \"%s[%li]\"\n",
249 get_entity_name (ent),
257 alloc_pto_t *alloc_pto = new_alloc_pto (node, n_ctxs);
260 set_alloc_pto (node, alloc_pto);
262 tp = get_Alloc_type (node); /* debugging only */
263 DBGPRINT (1, (stdout, "%s: %i names \"%s\" for \"%s[%li]\"\n",
272 tarval *tv = get_Const_tarval (node);
274 /* only need 'NULL' pointer constants */
275 if (mode_P == get_tarval_mode (tv)) {
276 if (get_tarval_null (mode_P) == tv) {
277 pto_t *pto = new_pto (node);
278 set_node_pto (node, pto);
285 /* nothing --- handled by reset_node_pto on each pass */
294 /** Initialise the given graph for a new pass run */
295 static void pto_init_graph_allocs (ir_graph *graph)
297 graph_info_t *ginfo = ecg_get_info (graph);
298 init_env_t *init_env;
300 init_env = xmalloc (sizeof (init_env_t));
301 init_env->n_ctxs = ginfo->n_ctxs;
303 /* HERE ("start"); */
305 irg_walk_graph (graph, init_pto, NULL, init_env);
308 memset (init_env, 0x00, sizeof (init_env_t));
312 /* ===================================================
313 Exported Implementation:
314 =================================================== */
315 /* "Fake" the arguments to the main method */
316 void fake_main_args (ir_graph *graph)
318 /* HERE ("start"); */
320 entity *ent = get_irg_entity (graph);
321 type *mtp = get_entity_type (ent);
322 ir_node **args = find_irg_args (graph);
323 type *ctp = get_method_param_type (mtp, 1); /* ctp == char[]*[]* */
327 /* 'main' has signature 'void(int, char[]*[]*)' */
328 assert (NULL == args [2]);
330 assert (is_Pointer_type (ctp));
332 ctp = get_pointer_points_to_type (ctp); /* ctp == char[]*[] */
334 assert (is_Array_type (ctp));
336 arg_desc = new_name (ctp, args [1], -1);
337 arg_pto = new_pto (args [1]);
338 /* todo: simulate 'store' to arg1[] ?!? */
339 qset_insert (arg_pto->values, arg_desc);
341 set_node_pto (args [1], arg_pto);
343 DBGPRINT (1, (stdout, "%s:%i (%s[%li])\n",
344 __FUNCTION__, __LINE__,
345 OPNAME (args [1]), OPNUM (args [1])));
347 # ifdef TEST_MAIN_TYPE
348 ctp = get_array_element_type (ctp); /* ctp == char[]* */
350 assert (is_Pointer_type (ctp));
352 ctp = get_pointer_points_to_type (ctp); /* ctp == char[] */
354 assert (is_Array_type (ctp));
356 ctp = get_array_element_type (ctp); /* ctp == char */
358 assert (is_primitive_type (ctp));
359 # endif /* defined TEST_MAIN_TYPE */
364 /* Initialise the Init module */
365 void pto_init_init (void)
367 pto_obst = (struct obstack*) xmalloc (sizeof (struct obstack));
369 obstack_init (pto_obst);
372 /* Cleanup the Init module */
373 void pto_init_cleanup (void)
375 obstack_free (pto_obst, NULL);
376 memset (pto_obst, 0x00, sizeof (struct obstack));
382 /* Initialise the Names of the Types/Entities */
383 void pto_init_type_names (void)
385 /* HERE ("start"); */
386 type_walk (clear_type_link, NULL, NULL);
390 /* Initialise the given graph for a new pass run */
391 void pto_init_graph (ir_graph *graph)
394 graph_info_t *ginfo = ecg_get_info (graph);
395 const int n_ctxs = ginfo->n_ctxs;
397 /* only for debugging stuff: */
398 entity *ent = get_irg_entity (graph);
399 const char *ent_name = (char*) get_entity_name (ent);
400 const char *own_name = (char*) get_type_name (get_entity_owner (ent));
402 DBGPRINT (2, (stdout, "%s: init \"%s.%s\" for %i ctxs\n",
404 own_name, ent_name, n_ctxs));
406 /* HERE ("start"); */
408 clear_graph_links (graph);
409 pto_init_graph_allocs (graph);
413 assert (NULL == get_irg_proj_args (graph));
414 proj_args = find_irg_args (graph);
415 set_irg_proj_args (graph, proj_args);
416 assert (proj_args == get_irg_proj_args (graph));
419 /* Reset the given graph for a new pass run */
420 void pto_reset_graph_pto (ir_graph *graph, int ctx_idx)
422 reset_env_t *reset_env;
424 reset_env = (reset_env_t*) xmalloc (sizeof (reset_env_t));
425 reset_env->ctx_idx = ctx_idx;
427 /* HERE ("start"); */
429 irg_walk_graph (graph, reset_node_pto, NULL, reset_env);
432 memset (reset_env, 0x00, sizeof (reset_env_t));
439 Revision 1.20 2005/12/05 12:19:54 beck
440 added missing include <assert.h> (not anymore included in libFirm)
442 Revision 1.19 2005/06/17 17:42:32 beck
444 fixed (void) function headers
446 Revision 1.18 2005/02/16 13:27:52 beck
447 added needed tv.h include
449 Revision 1.17 2005/01/14 14:12:51 liekweg
450 prepare gnu extension fix
452 Revision 1.16 2005/01/14 13:36:50 liekweg
453 don't put environments on the stack; handle consts
455 Revision 1.15 2005/01/10 17:26:34 liekweg
456 fixup printfs, don't put environments on the stack
458 Revision 1.14 2005/01/05 14:25:54 beck
459 renames all is_x*_type() functions to is_X*_type() to prevent name clash with EDG fronten
461 Revision 1.13 2004/12/21 15:07:55 beck
462 removed C99 contructs
463 removed unnecessary allocation
464 removed use of mode_P, use mode_is_reference() instead
465 removed handling of Const with pointer tarvals, these constructs are removed
467 Revision 1.12 2004/12/20 17:41:14 liekweg
470 Revision 1.11 2004/12/20 17:34:35 liekweg
471 fix recursion handling
473 Revision 1.10 2004/12/15 13:31:00 liekweg
474 store ctx idx in names
476 Revision 1.9 2004/12/15 09:18:18 liekweg
479 Revision 1.8 2004/12/02 16:17:51 beck
480 fixed config.h include
482 Revision 1.7 2004/11/30 14:47:54 liekweg
483 fix initialisation; do correct iteration
485 Revision 1.6 2004/11/26 16:00:41 liekweg
486 recognize class consts vs. ptr-to-class consts
488 Revision 1.5 2004/11/24 14:53:56 liekweg
491 Revision 1.4 2004/11/20 21:21:56 liekweg
492 Finalise initialisation
494 Revision 1.3 2004/11/18 16:37:07 liekweg