2 * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved.
4 * This file is part of libFirm.
6 * This file may be distributed and/or modified under the terms of the
7 * GNU General Public License version 2 as published by the Free Software
8 * Foundation and appearing in the file LICENSE.GPL included in the
9 * packaging of this file.
11 * Licensees holding valid libFirm Professional Edition licenses may use
12 * this file in accordance with the libFirm Commercial License.
13 * Agreement provided with the Software.
15 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
16 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * @brief lowering of Calls of intrinsic functions
23 * @author Michael Beck
43 #include "iropt_dbg.h"
46 /** Walker environment. */
47 typedef struct _walker_env {
48 pmap *c_map; /**< The intrinsic call map. */
49 unsigned nr_of_intrinsics; /**< statistics */
50 i_instr_record **i_map; /**< The intrinsic instruction map. */
54 * walker: call all mapper functions
56 static void call_mapper(ir_node *node, void *env) {
57 walker_env_t *wenv = env;
58 ir_op *op = get_irn_op(node);
63 const i_call_record *r;
66 symconst = get_Call_ptr(node);
67 if (! is_Global(symconst))
70 ent = get_Global_entity(symconst);
71 p = pmap_find(wenv->c_map, ent);
75 wenv->nr_of_intrinsics += r->i_mapper(node, r->ctx) ? 1 : 0;
78 if (op->code < (unsigned) ARR_LEN(wenv->i_map)) {
79 const i_instr_record *r = wenv->i_map[op->code];
80 /* run all possible mapper */
82 if (r->i_mapper(node, r->ctx)) {
83 ++wenv->nr_of_intrinsics;
92 /* Go through all graphs and map calls to intrinsic functions. */
93 unsigned lower_intrinsics(i_record *list, int length, int part_block_used) {
94 int i, n_ops = get_irp_n_opcodes();
96 pmap *c_map = pmap_create_ex(length);
97 i_instr_record **i_map;
98 unsigned nr_of_intrinsics = 0;
101 /* we use the ir_op generic pointers here */
102 NEW_ARR_A(const i_instr_record *, i_map, n_ops);
103 memset((void *)i_map, 0, sizeof(*i_map) * n_ops);
105 /* fill a map for faster search */
106 for (i = length - 1; i >= 0; --i) {
107 if (list[i].i_call.kind == INTRINSIC_CALL) {
108 pmap_insert(c_map, list[i].i_call.i_ent, (void *)&list[i].i_call);
110 ir_op *op = list[i].i_instr.op;
111 assert(op->code < (unsigned) ARR_LEN(i_map));
113 list[i].i_instr.link = i_map[op->code];
114 i_map[op->code] = &list[i].i_instr;
121 for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
122 irg = get_irp_irg(i);
124 if (part_block_used) {
125 ir_reserve_resources(irg, IR_RESOURCE_IRN_LINK | IR_RESOURCE_PHI_LIST);
126 collect_phiprojs(irg);
129 wenv.nr_of_intrinsics = 0;
130 irg_walk_graph(irg, NULL, call_mapper, &wenv);
133 ir_free_resources(irg, IR_RESOURCE_IRN_LINK | IR_RESOURCE_PHI_LIST);
135 if (wenv.nr_of_intrinsics > 0) {
136 /* Changes detected: we might have added/removed nodes. */
137 set_irg_outs_inconsistent(irg);
138 set_irg_callee_info_state(irg, irg_callee_info_inconsistent);
140 /* Exception control flow might have changed / new block might have added. */
141 set_irg_doms_inconsistent(irg);
142 set_irg_extblk_inconsistent(irg);
143 set_irg_loopinfo_inconsistent(irg);
145 /* Calls might be removed/added. */
146 set_trouts_inconsistent();
149 irg_verify(irg, VRFY_NORMAL);
151 /* Optimize it, tuple might be created. */
152 optimize_graph_df(irg);
154 nr_of_intrinsics += wenv.nr_of_intrinsics;
159 return nr_of_intrinsics;
160 } /* lower_intrinsics */
171 * Wrapper for running lower_intrinsics() as an ir_prog pass.
173 static int pass_wrapper(ir_prog *irp, void *context)
175 struct pass_t *pass = context;
176 (void) irp; /* TODO: set current irp, or remove parameter */
177 lower_intrinsics(pass->list, pass->length, pass->part_block_used);
178 /* probably this pass should not run again */
183 * Creates an ir_prog pass for lower_intrinsics.
185 * @param name the name of this pass or NULL
186 * @param list an array of intrinsic map records
187 * @param length the length of the array
188 * @param part_block_used set to true if part_block() must be using during lowering
190 ir_prog_pass_t *lower_intrinsics_pass(
192 i_record *list, int length, int part_block_used)
194 struct pass_t *pass = xmalloc(sizeof(*pass) + (length-1) * sizeof(pass->list[0]));
196 memset(&pass->pass, 0, sizeof(pass->pass));
197 pass->pass.kind = k_ir_prog_pass;
198 pass->pass.run_on_irprog = pass_wrapper;
199 pass->pass.context = pass;
200 pass->pass.name = name ? name : "lower_intrinsics";
202 INIT_LIST_HEAD(&pass->pass.list);
204 memcpy(pass->list, list, sizeof(list[0]) * length);
205 pass->length = length;
206 pass->part_block_used = part_block_used;
209 } /* lower_intrinsics_pass*/
212 * Helper function, replace the call by the given node.
214 * @param irn the result node
215 * @param call the call to replace
216 * @param mem the new mem result
217 * @param reg_jmp new regular control flow, if NULL, a Jmp will be used
218 * @param exc_jmp new exception control flow, if reg_jmp == NULL, a Bad will be used
220 static void replace_call(ir_node *irn, ir_node *call, ir_node *mem, ir_node *reg_jmp, ir_node *exc_jmp) {
221 ir_node *block = get_nodes_block(call);
223 if (reg_jmp == NULL) {
225 /* Beware: do we need here a protection against CSE? Better we do it. */
226 int old_cse = get_opt_cse();
228 reg_jmp = new_r_Jmp(block);
229 set_opt_cse(old_cse);
232 irn = new_r_Tuple(block, 1, &irn);
234 turn_into_tuple(call, pn_Call_max);
235 set_Tuple_pred(call, pn_Call_M_regular, mem);
236 set_Tuple_pred(call, pn_Call_X_regular, reg_jmp);
237 set_Tuple_pred(call, pn_Call_X_except, exc_jmp);
238 set_Tuple_pred(call, pn_Call_T_result, irn);
239 set_Tuple_pred(call, pn_Call_M_except, mem);
240 set_Tuple_pred(call, pn_Call_P_value_res_base, new_Bad());
243 /* A mapper for the integer abs. */
244 int i_mapper_abs(ir_node *call, void *ctx) {
245 ir_node *mem = get_Call_mem(call);
246 ir_node *block = get_nodes_block(call);
247 ir_node *op = get_Call_param(call, 0);
249 dbg_info *dbg = get_irn_dbg_info(call);
252 irn = new_rd_Abs(dbg, block, op, get_irn_mode(op));
253 DBG_OPT_ALGSIM0(call, irn, FS_OPT_RTS_ABS);
254 replace_call(irn, call, mem, NULL, NULL);
258 /* A mapper for the integer bswap. */
259 int i_mapper_bswap(ir_node *call, void *ctx) {
260 ir_node *mem = get_Call_mem(call);
261 ir_node *block = get_nodes_block(call);
262 ir_node *op = get_Call_param(call, 0);
263 ir_type *tp = get_Call_type(call);
264 dbg_info *dbg = get_irn_dbg_info(call);
268 irn = new_rd_Builtin(dbg, block, get_irg_no_mem(current_ir_graph), 1, &op, ir_bk_bswap, tp);
269 set_irn_pinned(irn, op_pin_state_floats);
270 DBG_OPT_ALGSIM0(call, irn, FS_OPT_RTS_ABS);
271 irn = new_r_Proj(block, irn, get_irn_mode(op), pn_Builtin_1_result);
272 replace_call(irn, call, mem, NULL, NULL);
274 } /* i_mapper_bswap */
276 /* A mapper for the alloca() function. */
277 int i_mapper_alloca(ir_node *call, void *ctx) {
278 ir_node *mem = get_Call_mem(call);
279 ir_node *block = get_nodes_block(call);
280 ir_node *op = get_Call_param(call, 0);
281 ir_node *irn, *exc, *no_exc;
282 dbg_info *dbg = get_irn_dbg_info(call);
285 if (mode_is_signed(get_irn_mode(op))) {
286 ir_mode *mode = get_irn_mode(op);
287 mode = find_unsigned_mode(mode);
289 panic("Cannot find unsigned mode for %M", mode);
291 op = new_rd_Conv(dbg, block, op, mode);
294 irn = new_rd_Alloc(dbg, block, mem, op, firm_unknown_type, stack_alloc);
295 mem = new_rd_Proj(dbg, block, irn, mode_M, pn_Alloc_M);
296 no_exc = new_rd_Proj(dbg, block, irn, mode_X, pn_Alloc_X_regular);
297 exc = new_rd_Proj(dbg, block, irn, mode_X, pn_Alloc_X_except);
298 irn = new_rd_Proj(dbg, block, irn, get_modeP_data(), pn_Alloc_res);
300 DBG_OPT_ALGSIM0(call, irn, FS_OPT_RTS_ALLOCA);
301 replace_call(irn, call, mem, no_exc, exc);
303 } /* i_mapper_alloca */
305 /* A mapper for the floating point sqrt. */
306 int i_mapper_sqrt(ir_node *call, void *ctx) {
309 ir_node *op = get_Call_param(call, 0);
315 tv = get_Const_tarval(op);
316 if (! tarval_is_null(tv) && !tarval_is_one(tv))
319 mem = get_Call_mem(call);
321 /* sqrt(0) = 0, sqrt(1) = 1 */
322 DBG_OPT_ALGSIM0(call, op, FS_OPT_RTS_SQRT);
323 replace_call(op, call, mem, NULL, NULL);
325 } /* i_mapper_sqrt */
327 /* A mapper for the floating point cbrt. */
328 int i_mapper_cbrt(ir_node *call, void *ctx) {
331 ir_node *op = get_Call_param(call, 0);
337 tv = get_Const_tarval(op);
338 if (! tarval_is_null(tv) && !tarval_is_one(tv) && !tarval_is_minus_one(tv))
341 mem = get_Call_mem(call);
343 /* cbrt(0) = 0, cbrt(1) = 1, cbrt(-1) = -1 */
344 DBG_OPT_ALGSIM0(call, op, FS_OPT_RTS_CBRT);
345 replace_call(op, call, mem, NULL, NULL);
347 } /* i_mapper_cbrt */
349 /* A mapper for the floating point pow. */
350 int i_mapper_pow(ir_node *call, void *ctx) {
353 ir_node *left = get_Call_param(call, 0);
354 ir_node *right = get_Call_param(call, 1);
355 ir_node *block = get_nodes_block(call);
356 ir_node *irn, *reg_jmp = NULL, *exc_jmp = NULL;
359 if (is_Const(left) && is_Const_one(left)) {
360 /* pow (1.0, x) = 1.0 */
362 } else if (is_Const(right)) {
363 tarval *tv = get_Const_tarval(right);
364 if (tarval_is_null(tv)) {
365 /* pow(x, 0.0) = 1.0 */
366 ir_mode *mode = get_tarval_mode(tv);
367 irn = new_Const(get_mode_one(mode));
368 } else if (tarval_is_one(tv)) {
369 /* pow(x, 1.0) = x */
371 } else if (tarval_is_minus_one(tv)) {
372 /* pow(x, -1.0) = 1/x */
380 mem = get_Call_mem(call);
381 dbg = get_irn_dbg_info(call);
384 ir_mode *mode = get_irn_mode(left);
387 irn = new_Const(get_mode_one(mode));
388 quot = new_rd_Quot(dbg, block, mem, irn, left, mode, op_pin_state_pinned);
389 mem = new_r_Proj(block, quot, mode_M, pn_Quot_M);
390 irn = new_r_Proj(block, quot, mode, pn_Quot_res);
391 reg_jmp = new_r_Proj(block, quot, mode_X, pn_Quot_X_regular);
392 exc_jmp = new_r_Proj(block, quot, mode_X, pn_Quot_X_except);
394 DBG_OPT_ALGSIM0(call, irn, FS_OPT_RTS_POW);
395 replace_call(irn, call, mem, reg_jmp, exc_jmp);
399 /* A mapper for the floating point exp. */
400 int i_mapper_exp(ir_node *call, void *ctx) {
401 ir_node *val = get_Call_param(call, 0);
404 if (is_Const(val) && is_Const_null(val)) {
406 ir_mode *mode = get_irn_mode(val);
407 ir_node *irn = new_Const(get_mode_one(mode));
408 ir_node *mem = get_Call_mem(call);
409 DBG_OPT_ALGSIM0(call, irn, FS_OPT_RTS_EXP);
410 replace_call(irn, call, mem, NULL, NULL);
417 * A mapper for mapping f(0.0) to 0.0.
419 static int i_mapper_zero_to_zero(ir_node *call, void *ctx, int reason) {
420 ir_node *val = get_Call_param(call, 0);
423 if (is_Const(val) && is_Const_null(val)) {
425 ir_node *mem = get_Call_mem(call);
426 DBG_OPT_ALGSIM0(call, val, reason);
427 replace_call(val, call, mem, NULL, NULL);
431 } /* i_mapper_zero_to_zero */
434 * A mapper for mapping f(1.0) to 0.0.
436 static int i_mapper_one_to_zero(ir_node *call, void *ctx, int reason) {
437 ir_node *val = get_Call_param(call, 0);
440 if (is_Const(val) && is_Const_one(val)) {
441 /* acos(1.0) = 0.0 */
442 ir_mode *mode = get_irn_mode(val);
443 ir_node *irn = new_Const(get_mode_null(mode));
444 ir_node *mem = get_Call_mem(call);
445 DBG_OPT_ALGSIM0(call, irn, reason);
446 replace_call(irn, call, mem, NULL, NULL);
450 } /* i_mapper_one_to_zero */
453 * A mapper for mapping a functions with the following characteristics:
457 static int i_mapper_symmetric_zero_to_one(ir_node *call, void *ctx, int reason) {
458 ir_node *val = get_Call_param(call, 0);
461 if (is_strictConv(val)) {
462 ir_node *op = get_Conv_op(val);
464 /* f(-x) = f(x) with strictConv */
465 ir_node *block = get_nodes_block(call);
466 ir_mode *mode = get_irn_mode(val);
467 dbg_info *dbg = get_irn_dbg_info(val);
469 op = get_Minus_op(op);
470 val = new_rd_Conv(dbg, block, op, mode);
473 set_Conv_strict(val, 1);
475 DBG_OPT_ALGSIM2(call, op, call, FS_OPT_RTS_SYMMETRIC);
476 set_Call_param(call, 0, val);
478 } else if (is_Minus(val)) {
480 val = get_Minus_op(val);
481 DBG_OPT_ALGSIM2(call, val, call, FS_OPT_RTS_SYMMETRIC);
482 set_Call_param(call, 0, val);
485 if (is_Const(val) && is_Const_null(val)) {
487 ir_mode *mode = get_irn_mode(val);
488 ir_node *irn = new_Const(get_mode_one(mode));
489 ir_node *mem = get_Call_mem(call);
490 DBG_OPT_ALGSIM0(call, irn, reason);
491 replace_call(irn, call, mem, NULL, NULL);
495 } /* i_mapper_symmetric_zero_to_one */
497 /* A mapper for the floating point log. */
498 int i_mapper_log(ir_node *call, void *ctx) {
500 return i_mapper_one_to_zero(call, ctx, FS_OPT_RTS_LOG);
503 /* A mapper for the floating point sin. */
504 int i_mapper_sin(ir_node *call, void *ctx) {
506 return i_mapper_zero_to_zero(call, ctx, FS_OPT_RTS_SIN);
509 /* A mapper for the floating point cos. */
510 int i_mapper_cos(ir_node *call, void *ctx) {
511 /* cos(0.0) = 1.0, cos(-x) = x */
512 return i_mapper_symmetric_zero_to_one(call, ctx, FS_OPT_RTS_COS);
515 /* A mapper for the floating point tan. */
516 int i_mapper_tan(ir_node *call, void *ctx) {
518 return i_mapper_zero_to_zero(call, ctx, FS_OPT_RTS_TAN);
521 /* A mapper for the floating point asin. */
522 int i_mapper_asin(ir_node *call, void *ctx) {
523 /* asin(0.0) = 0.0 */
524 return i_mapper_zero_to_zero(call, ctx, FS_OPT_RTS_ASIN);
525 } /* i_mapper_asin */
527 /* A mapper for the floating point acos. */
528 int i_mapper_acos(ir_node *call, void *ctx) {
529 /* acos(1.0) = 0.0 */
530 return i_mapper_one_to_zero(call, ctx, FS_OPT_RTS_ACOS);
531 } /* i_mapper_acos */
533 /* A mapper for the floating point atan. */
534 int i_mapper_atan(ir_node *call, void *ctx) {
535 /* atan(0.0) = 0.0 */
536 return i_mapper_zero_to_zero(call, ctx, FS_OPT_RTS_ATAN);
537 } /* i_mapper_atan */
539 /* A mapper for the floating point sinh. */
540 int i_mapper_sinh(ir_node *call, void *ctx) {
541 /* sinh(0.0) = 0.0 */
542 return i_mapper_zero_to_zero(call, ctx, FS_OPT_RTS_SINH);
543 } /* i_mapper_sinh */
545 /* A mapper for the floating point cosh. */
546 int i_mapper_cosh(ir_node *call, void *ctx) {
547 /* cosh(0.0) = 1.0, cosh(-x) = x */
548 return i_mapper_symmetric_zero_to_one(call, ctx, FS_OPT_RTS_COSH);
549 } /* i_mapper_cosh */
551 /* A mapper for the floating point tanh. */
552 int i_mapper_tanh(ir_node *call, void *ctx) {
553 /* tanh(0.0) = 0.0 */
554 return i_mapper_zero_to_zero(call, ctx, FS_OPT_RTS_TANH);
555 } /* i_mapper_tanh */
558 * Return the const entity that is accessed through the pointer ptr or
559 * NULL if there is no entity (or the entity is not constant).
561 * @param ptr the pointer
563 static ir_entity *get_const_entity(ir_node *ptr) {
564 /* FIXME: this cannot handle constant strings inside struct initializers yet */
565 if (is_Global(ptr)) {
566 ir_entity *ent = get_Global_entity(ptr);
568 if (get_entity_variability(ent) == variability_constant) {
569 /* a constant entity */
574 } /* get_const_entity */
577 * Calculate the value of strlen if possible.
579 * @param ent the entity
580 * @param res_tp the result type
582 * @return a Const node containing the strlen() result or NULL
583 * if the evaluation fails
585 static ir_node *eval_strlen(ir_entity *ent, ir_type *res_tp) {
586 ir_type *tp = get_entity_type(ent);
590 if (! is_Array_type(tp))
592 tp = get_array_element_type(tp);
593 if (! is_Primitive_type(tp))
595 mode = get_type_mode(tp);
597 /* FIXME: This is too restrict, as the type char might be more the 8bits */
598 if (!mode_is_int(mode) || get_mode_size_bits(mode) != 8)
601 n = get_compound_ent_n_values(ent);
602 for (i = 0; i < n; ++i) {
603 ir_node *irn = get_compound_ent_value(ent, i);
608 if (is_Const_null(irn)) {
609 /* found the length */
615 tarval *tv = new_tarval_from_long(len, get_type_mode(res_tp));
616 return new_Const_type(tv, res_tp);
621 /* A mapper for strlen */
622 int i_mapper_strlen(ir_node *call, void *ctx) {
623 ir_node *s = get_Call_param(call, 0);
624 ir_entity *ent = get_const_entity(s);
628 /* FIXME: this cannot handle constant strings inside struct initializers yet */
630 /* a constant entity */
631 ir_type *tp = get_Call_type(call);
634 tp = get_method_res_type(tp, 0);
635 irn = eval_strlen(ent, tp);
638 ir_node *mem = get_Call_mem(call);
639 DBG_OPT_ALGSIM0(call, irn, FS_OPT_RTS_STRLEN);
640 replace_call(irn, call, mem, NULL, NULL);
645 } /* i_mapper_strlen */
648 * Calculate the value of strlen if possible.
650 * @param left the left entity
651 * @param right the right entity
652 * @param res_tp the result type
654 * @return a Const node containing the strcmp() result or NULL
655 * if the evaluation fails
657 static ir_node *eval_strcmp(ir_entity *left, ir_entity *right, ir_type *res_tp) {
662 tp = get_entity_type(left);
663 if (! is_Array_type(tp))
665 tp = get_array_element_type(tp);
666 if (! is_Primitive_type(tp))
668 mode = get_type_mode(tp);
670 /* FIXME: This is too restrict, as the type char might be more the 8bits */
671 if (!mode_is_int(mode) || get_mode_size_bits(mode) != 8)
674 tp = get_entity_type(right);
675 if (! is_Array_type(tp))
677 tp = get_array_element_type(tp);
678 if (! is_Primitive_type(tp))
680 mode = get_type_mode(tp);
682 /* FIXME: This is too restrict, as the type char might be more the 8bits */
683 if (!mode_is_int(mode) || get_mode_size_bits(mode) != 8)
686 n = get_compound_ent_n_values(left);
687 n_r = get_compound_ent_n_values(right);
690 for (i = 0; i < n; ++i) {
695 irn = get_compound_ent_value(left, i);
698 tv = get_Const_tarval(irn);
699 v_l = get_tarval_long(tv);
701 irn = get_compound_ent_value(right, i);
704 tv = get_Const_tarval(irn);
705 v_r = get_tarval_long(tv);
722 /* we found an end */
723 tarval *tv = new_tarval_from_long(res, get_type_mode(res_tp));
724 return new_Const_type(tv, res_tp);
730 * Checks if an entity represents the empty string.
732 * @param ent the entity
734 * @return non-zero if ent represents the empty string
736 static int is_empty_string(ir_entity *ent) {
737 ir_type *tp = get_entity_type(ent);
742 if (! is_Array_type(tp))
744 tp = get_array_element_type(tp);
745 if (! is_Primitive_type(tp))
747 mode = get_type_mode(tp);
749 /* FIXME: This is too restrict, as the type char might be more the 8bits */
750 if (!mode_is_int(mode) || get_mode_size_bits(mode) != 8)
753 n = get_compound_ent_n_values(ent);
756 irn = get_compound_ent_value(ent, 0);
758 return is_Const(irn) && is_Const_null(irn);
759 } /* is_empty_string */
761 /* A mapper for strcmp */
762 int i_mapper_strcmp(ir_node *call, void *ctx) {
763 ir_node *left = get_Call_param(call, 0);
764 ir_node *right = get_Call_param(call, 1);
768 ir_type *call_tp = get_Call_type(call);
769 ir_type *res_tp = get_method_res_type(call_tp, 0);
770 ir_entity *ent_l, *ent_r;
776 /* do some type checks first */
777 if (! is_Primitive_type(res_tp))
779 char_tp = get_method_param_type(call_tp, 0);
780 if (char_tp != get_method_param_type(call_tp, 1))
782 if (! is_Pointer_type(char_tp))
784 char_tp = get_pointer_points_to_type(char_tp);
787 /* a strcmp(s, s) ==> 0 */
788 ir_node *mem = get_Call_mem(call);
789 ir_mode *mode = get_type_mode(res_tp);
791 irn = new_Const(get_mode_null(mode));
792 DBG_OPT_ALGSIM0(call, irn, FS_OPT_RTS_STRCMP);
793 replace_call(irn, call, mem, NULL, NULL);
796 ent_l = get_const_entity(left);
797 ent_r = get_const_entity(right);
799 if (ent_l != NULL && ent_r != NULL) {
800 /* both entities are const, try to evaluate */
801 irn = eval_strcmp(ent_l, ent_r, res_tp);
802 } else if (ent_l != NULL) {
803 if (is_empty_string(ent_l)) {
804 /* s strcmp("", s) ==> -(*s)*/
806 goto replace_by_call;
808 } else if (ent_r != NULL) {
809 if (is_empty_string(ent_r)) {
810 /* s strcmp(s, "") ==> (*s) */
811 ir_node *mem, *block;
817 mem = get_Call_mem(call);
818 block = get_nodes_block(call);
819 dbg = get_irn_dbg_info(call);
820 mode = get_type_mode(char_tp);
822 /* replace the strcmp by (*x) */
823 irn = new_rd_Load(dbg, block, mem, v, mode, 0);
824 mem = new_r_Proj(block, irn, mode_M, pn_Load_M);
825 exc = new_r_Proj(block, irn, mode_X, pn_Load_X_except);
826 reg = new_r_Proj(block, irn, mode_X, pn_Load_X_regular);
827 irn = new_r_Proj(block, irn, mode, pn_Load_res);
829 /* conv to the result mode */
830 mode = get_type_mode(res_tp);
831 irn = new_rd_Conv(dbg, block, irn, mode);
834 /* negate in the ("", s) case */
835 irn = new_rd_Minus(dbg, block, irn, mode);
841 ir_node *mem = get_Call_mem(call);
842 DBG_OPT_ALGSIM0(call, irn, FS_OPT_RTS_STRCMP);
843 replace_call(irn, call, mem, reg, exc);
848 } /* i_mapper_strcmp */
850 /* A mapper for strncmp */
851 int i_mapper_strncmp(ir_node *call, void *ctx) {
852 ir_node *left = get_Call_param(call, 0);
853 ir_node *right = get_Call_param(call, 1);
854 ir_node *len = get_Call_param(call, 2);
858 if (left == right || (is_Const(len) && is_Const_null(len))) {
859 /* a strncmp(s, s, len) ==> 0 OR
860 a strncmp(a, b, 0) ==> 0 */
861 ir_node *mem = get_Call_mem(call);
862 ir_node *adr = get_Call_ptr(call);
863 ir_entity *ent = get_SymConst_entity(adr);
864 ir_type *call_tp = get_entity_type(ent);
865 ir_type *res_tp = get_method_res_type(call_tp, 0);
866 ir_mode *mode = get_type_mode(res_tp);
868 irn = new_Const(get_mode_null(mode));
869 DBG_OPT_ALGSIM0(call, irn, FS_OPT_RTS_STRNCMP);
870 replace_call(irn, call, mem, NULL, NULL);
874 } /* i_mapper_strncmp */
876 /* A mapper for strcpy */
877 int i_mapper_strcpy(ir_node *call, void *ctx) {
878 ir_node *dst = get_Call_param(call, 0);
879 ir_node *src = get_Call_param(call, 1);
883 /* a strcpy(d, s) ==> d */
884 ir_node *mem = get_Call_mem(call);
885 ir_node *dst = get_Call_param(call, 0);
887 DBG_OPT_ALGSIM0(call, dst, FS_OPT_RTS_STRCPY);
888 replace_call(dst, call, mem, NULL, NULL);
892 } /* i_mapper_strcpy */
894 /* A mapper for memcpy */
895 int i_mapper_memcpy(ir_node *call, void *ctx) {
896 ir_node *dst = get_Call_param(call, 0);
897 ir_node *src = get_Call_param(call, 1);
898 ir_node *len = get_Call_param(call, 2);
901 if (dst == src || (is_Const(len) && is_Const_null(len))) {
902 /* a memcpy(d, d, len) ==> d OR
903 a memcpy(d, s, 0) ==> d */
904 ir_node *mem = get_Call_mem(call);
906 DBG_OPT_ALGSIM0(call, dst, FS_OPT_RTS_MEMCPY);
907 replace_call(dst, call, mem, NULL, NULL);
911 } /* i_mapper_memcpy */
913 /* A mapper for mempcpy */
914 int i_mapper_mempcpy(ir_node *call, void *ctx) {
915 ir_node *dst = get_Call_param(call, 0);
916 ir_node *src = get_Call_param(call, 1);
917 ir_node *len = get_Call_param(call, 2);
920 if (dst == src || (is_Const(len) && is_Const_null(len))) {
921 /* a memcpy(d, d, len) ==> d + len OR
922 a memcpy(d, s, 0) ==> d + 0 */
923 dbg_info *dbg = get_irn_dbg_info(call);
924 ir_node *mem = get_Call_mem(call);
925 ir_node *blk = get_nodes_block(call);
926 ir_mode *mode = get_irn_mode(dst);
927 ir_node *res = new_rd_Add(dbg, blk, dst, len, mode);
929 DBG_OPT_ALGSIM0(call, res, FS_OPT_RTS_MEMPCPY);
930 replace_call(res, call, mem, NULL, NULL);
934 } /* i_mapper_mempcpy */
936 /* A mapper for memmove */
937 int i_mapper_memmove(ir_node *call, void *ctx) {
938 ir_node *dst = get_Call_param(call, 0);
939 ir_node *src = get_Call_param(call, 1);
940 ir_node *len = get_Call_param(call, 2);
943 if (dst == src || (is_Const(len) && is_Const_null(len))) {
944 /* a memmove(d, d, len) ==> d OR
945 a memmove(d, s, 0) ==> d */
946 ir_node *mem = get_Call_mem(call);
948 DBG_OPT_ALGSIM0(call, dst, FS_OPT_RTS_MEMMOVE);
949 replace_call(dst, call, mem, NULL, NULL);
953 } /* i_mapper_memmove */
955 /* A mapper for memset */
956 int i_mapper_memset(ir_node *call, void *ctx) {
957 ir_node *len = get_Call_param(call, 2);
960 if (is_Const(len) && is_Const_null(len)) {
961 /* a memset(d, C, 0) ==> d */
962 ir_node *mem = get_Call_mem(call);
963 ir_node *dst = get_Call_param(call, 0);
965 DBG_OPT_ALGSIM0(call, dst, FS_OPT_RTS_MEMSET);
966 replace_call(dst, call, mem, NULL, NULL);
970 } /* i_mapper_memset */
972 /* A mapper for memcmp */
973 int i_mapper_memcmp(ir_node *call, void *ctx) {
974 ir_node *left = get_Call_param(call, 0);
975 ir_node *right = get_Call_param(call, 1);
976 ir_node *len = get_Call_param(call, 2);
980 if (left == right || (is_Const(len) && is_Const_null(len))) {
981 /* a memcmp(s, s, len) ==> 0 OR
982 a memcmp(a, b, 0) ==> 0 */
983 ir_node *mem = get_Call_mem(call);
984 ir_node *adr = get_Call_ptr(call);
985 ir_entity *ent = get_SymConst_entity(adr);
986 ir_type *call_tp = get_entity_type(ent);
987 ir_type *res_tp = get_method_res_type(call_tp, 0);
988 ir_mode *mode = get_type_mode(res_tp);
990 irn = new_Const(get_mode_null(mode));
991 DBG_OPT_ALGSIM0(call, irn, FS_OPT_RTS_STRNCMP);
992 replace_call(irn, call, mem, NULL, NULL);
996 } /* i_mapper_memcmp */
999 * Returns the result mode of a node.
1001 static ir_mode *get_irn_res_mode(ir_node *node) {
1002 switch (get_irn_opcode(node)) {
1003 case iro_Load: return get_Load_mode(node);
1004 case iro_Quot: return get_Quot_resmode(node);
1005 case iro_Div: return get_Div_resmode(node);
1006 case iro_Mod: return get_Mod_resmode(node);
1007 case iro_DivMod: return get_DivMod_resmode(node);
1008 default: return NULL;
1010 } /* get_irn_res_mode */
1012 #define LMAX(a, b) ((a) > (b) ? (a) : (b))
1014 /* A mapper for mapping unsupported instructions to runtime calls. */
1015 int i_mapper_RuntimeCall(ir_node *node, runtime_rt *rt) {
1016 int i, j, arity, first, n_param, n_res;
1019 ir_node *mem, *bl, *call, *addr, *res_proj;
1022 symconst_symbol sym;
1023 ir_mode *mode = get_irn_mode(node);
1025 if (mode != rt->mode)
1027 /* check if the result modes match */
1028 if (mode == mode_T && rt->res_mode != NULL) {
1029 mode = get_irn_res_mode(node);
1030 if (mode != rt->res_mode)
1034 arity = get_irn_arity(node);
1038 mtp = get_entity_type(rt->ent);
1039 n_param = get_method_n_params(mtp);
1040 irg = current_ir_graph;
1042 mem = get_irn_n(node, 0);
1043 if (get_irn_mode(mem) != mode_M) {
1044 mem = new_r_NoMem(irg);
1049 /* check if the modes of the predecessors match the parameter modes */
1050 if (arity - first != n_param)
1053 for (i = first, j = 0; i < arity; ++i, ++j) {
1054 ir_type *param_tp = get_method_param_type(mtp, j);
1055 ir_node *pred = get_irn_n(node, i);
1057 if (get_type_mode(param_tp) != get_irn_mode(pred))
1061 n_res = get_method_n_ress(mtp);
1063 /* step 0: calculate the number of needed Proj's */
1065 n_proj = LMAX(n_proj, rt->mem_proj_nr + 1);
1066 n_proj = LMAX(n_proj, rt->regular_proj_nr + 1);
1067 n_proj = LMAX(n_proj, rt->exc_proj_nr + 1);
1068 n_proj = LMAX(n_proj, rt->exc_mem_proj_nr + 1);
1069 n_proj = LMAX(n_proj, rt->res_proj_nr + 1);
1072 if (rt->mode != mode_T) /* must be mode_T */
1077 if (get_type_mode(get_method_res_type(mtp, 0)) != rt->mode)
1081 /* ok, when we are here, the number of predecessors match as well as the parameter modes */
1082 bl = get_nodes_block(node);
1086 NEW_ARR_A(ir_node *, in, n_param);
1087 for (i = 0; i < n_param; ++i)
1088 in[i] = get_irn_n(node, first + i);
1091 /* step 1: create the call */
1092 sym.entity_p = rt->ent;
1093 addr = new_r_SymConst(irg, mode_P_code, sym, symconst_addr_ent);
1094 call = new_rd_Call(get_irn_dbg_info(node), bl, mem, addr, n_param, in, mtp);
1095 set_irn_pinned(call, get_irn_pinned(node));
1098 res_proj = new_r_Proj(bl, call, mode_T, pn_Call_T_result);
1103 n_proj += n_res - 1;
1106 turn_into_tuple(node, n_proj);
1108 for (i = 0; i < n_proj; ++i)
1109 set_Tuple_pred(node, i, new_r_Bad(irg));
1110 if (rt->mem_proj_nr >= 0)
1111 set_Tuple_pred(node, rt->mem_proj_nr, new_r_Proj(bl, call, mode_M, pn_Call_M_regular));
1112 if (!is_NoMem(mem)) {
1113 /* Exceptions can only be handled with real memory */
1114 if (rt->regular_proj_nr >= 0)
1115 set_Tuple_pred(node, rt->regular_proj_nr, new_r_Proj(bl, call, mode_X, pn_Call_X_regular));
1116 if (rt->exc_proj_nr >= 0)
1117 set_Tuple_pred(node, rt->exc_proj_nr, new_r_Proj(bl, call, mode_X, pn_Call_X_except));
1118 if (rt->exc_mem_proj_nr >= 0)
1119 set_Tuple_pred(node, rt->mem_proj_nr, new_r_Proj(bl, call, mode_M, pn_Call_M_except));
1122 if (rt->res_proj_nr >= 0)
1123 for (i = 0; i < n_res; ++i)
1124 set_Tuple_pred(node, rt->res_proj_nr + i,
1125 new_r_Proj(bl, res_proj, get_type_mode(get_method_res_type(mtp, i)), i));
1128 /* only one return value supported */
1130 ir_mode *mode = get_type_mode(get_method_res_type(mtp, 0));
1132 res_proj = new_r_Proj(bl, call, mode_T, pn_Call_T_result);
1133 res_proj = new_r_Proj(bl, res_proj, mode, 0);
1135 exchange(node, res_proj);
1139 /* should not happen */
1141 } /* i_mapper_RuntimeCall */