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 lower_intrinsics(pass->list, pass->length, pass->part_block_used);
177 /* probably this pass should not run again */
182 * Creates an ir_prog pass for lower_intrinsics.
184 * @param name the name of this pass or NULL
185 * @param verify should this pass be verified?
186 * @param dump should this pass result be dumped?
187 * @param list an array of intrinsic map records
188 * @param length the length of the array
189 * @param part_block_used set to true if part_block() must be using during lowering
191 ir_prog_pass_t *lower_intrinsics_pass(
195 i_record *list, int length, int part_block_used)
197 struct pass_t *pass = xmalloc(sizeof(*pass) + (length-1) * sizeof(pass->list[0]));
199 memset(&pass->pass, 0, sizeof(pass->pass));
200 pass->pass.kind = k_ir_prog_pass;
201 pass->pass.run_on_irprog = pass_wrapper;
202 pass->pass.context = pass;
203 pass->pass.name = name ? name : "lower_intrinsics";
204 pass->pass.verify = verify != 0;
205 pass->pass.dump = dump != 0;
207 INIT_LIST_HEAD(&pass->pass.list);
209 memcpy(pass->list, list, sizeof(list[0]) * length);
210 pass->length = length;
211 pass->part_block_used = part_block_used;
214 } /* lower_intrinsics_pass*/
217 * Helper function, replace the call by the given node.
219 * @param irn the result node
220 * @param call the call to replace
221 * @param mem the new mem result
222 * @param reg_jmp new regular control flow, if NULL, a Jmp will be used
223 * @param exc_jmp new exception control flow, if reg_jmp == NULL, a Bad will be used
225 static void replace_call(ir_node *irn, ir_node *call, ir_node *mem, ir_node *reg_jmp, ir_node *exc_jmp) {
226 ir_node *block = get_nodes_block(call);
228 if (reg_jmp == NULL) {
230 /* Beware: do we need here a protection against CSE? Better we do it. */
231 int old_cse = get_opt_cse();
233 reg_jmp = new_r_Jmp(block);
234 set_opt_cse(old_cse);
237 irn = new_r_Tuple(block, 1, &irn);
239 turn_into_tuple(call, pn_Call_max);
240 set_Tuple_pred(call, pn_Call_M_regular, mem);
241 set_Tuple_pred(call, pn_Call_X_regular, reg_jmp);
242 set_Tuple_pred(call, pn_Call_X_except, exc_jmp);
243 set_Tuple_pred(call, pn_Call_T_result, irn);
244 set_Tuple_pred(call, pn_Call_M_except, mem);
245 set_Tuple_pred(call, pn_Call_P_value_res_base, new_Bad());
248 /* A mapper for the integer abs. */
249 int i_mapper_abs(ir_node *call, void *ctx) {
250 ir_node *mem = get_Call_mem(call);
251 ir_node *block = get_nodes_block(call);
252 ir_node *op = get_Call_param(call, 0);
254 dbg_info *dbg = get_irn_dbg_info(call);
257 irn = new_rd_Abs(dbg, block, op, get_irn_mode(op));
258 DBG_OPT_ALGSIM0(call, irn, FS_OPT_RTS_ABS);
259 replace_call(irn, call, mem, NULL, NULL);
263 /* A mapper for the integer bswap. */
264 int i_mapper_bswap(ir_node *call, void *ctx) {
265 ir_node *mem = get_Call_mem(call);
266 ir_node *block = get_nodes_block(call);
267 ir_node *op = get_Call_param(call, 0);
268 ir_type *tp = get_Call_type(call);
269 dbg_info *dbg = get_irn_dbg_info(call);
273 irn = new_rd_Builtin(dbg, block, get_irg_no_mem(current_ir_graph), 1, &op, ir_bk_bswap, tp);
274 set_irn_pinned(irn, op_pin_state_floats);
275 DBG_OPT_ALGSIM0(call, irn, FS_OPT_RTS_ABS);
276 irn = new_r_Proj(block, irn, get_irn_mode(op), pn_Builtin_1_result);
277 replace_call(irn, call, mem, NULL, NULL);
279 } /* i_mapper_bswap */
281 /* A mapper for the alloca() function. */
282 int i_mapper_alloca(ir_node *call, void *ctx) {
283 ir_node *mem = get_Call_mem(call);
284 ir_node *block = get_nodes_block(call);
285 ir_node *op = get_Call_param(call, 0);
286 ir_node *irn, *exc, *no_exc;
287 dbg_info *dbg = get_irn_dbg_info(call);
290 if (mode_is_signed(get_irn_mode(op))) {
291 ir_mode *mode = get_irn_mode(op);
292 mode = find_unsigned_mode(mode);
294 panic("Cannot find unsigned mode for %M", mode);
296 op = new_rd_Conv(dbg, block, op, mode);
299 irn = new_rd_Alloc(dbg, block, mem, op, firm_unknown_type, stack_alloc);
300 mem = new_rd_Proj(dbg, block, irn, mode_M, pn_Alloc_M);
301 no_exc = new_rd_Proj(dbg, block, irn, mode_X, pn_Alloc_X_regular);
302 exc = new_rd_Proj(dbg, block, irn, mode_X, pn_Alloc_X_except);
303 irn = new_rd_Proj(dbg, block, irn, get_modeP_data(), pn_Alloc_res);
305 DBG_OPT_ALGSIM0(call, irn, FS_OPT_RTS_ALLOCA);
306 replace_call(irn, call, mem, no_exc, exc);
308 } /* i_mapper_alloca */
310 /* A mapper for the floating point sqrt. */
311 int i_mapper_sqrt(ir_node *call, void *ctx) {
314 ir_node *op = get_Call_param(call, 0);
320 tv = get_Const_tarval(op);
321 if (! tarval_is_null(tv) && !tarval_is_one(tv))
324 mem = get_Call_mem(call);
326 /* sqrt(0) = 0, sqrt(1) = 1 */
327 DBG_OPT_ALGSIM0(call, op, FS_OPT_RTS_SQRT);
328 replace_call(op, call, mem, NULL, NULL);
330 } /* i_mapper_sqrt */
332 /* A mapper for the floating point cbrt. */
333 int i_mapper_cbrt(ir_node *call, void *ctx) {
336 ir_node *op = get_Call_param(call, 0);
342 tv = get_Const_tarval(op);
343 if (! tarval_is_null(tv) && !tarval_is_one(tv) && !tarval_is_minus_one(tv))
346 mem = get_Call_mem(call);
348 /* cbrt(0) = 0, cbrt(1) = 1, cbrt(-1) = -1 */
349 DBG_OPT_ALGSIM0(call, op, FS_OPT_RTS_CBRT);
350 replace_call(op, call, mem, NULL, NULL);
352 } /* i_mapper_cbrt */
354 /* A mapper for the floating point pow. */
355 int i_mapper_pow(ir_node *call, void *ctx) {
358 ir_node *left = get_Call_param(call, 0);
359 ir_node *right = get_Call_param(call, 1);
360 ir_node *block = get_nodes_block(call);
361 ir_node *irn, *reg_jmp = NULL, *exc_jmp = NULL;
364 if (is_Const(left) && is_Const_one(left)) {
365 /* pow (1.0, x) = 1.0 */
367 } else if (is_Const(right)) {
368 tarval *tv = get_Const_tarval(right);
369 if (tarval_is_null(tv)) {
370 /* pow(x, 0.0) = 1.0 */
371 ir_mode *mode = get_tarval_mode(tv);
372 irn = new_Const(get_mode_one(mode));
373 } else if (tarval_is_one(tv)) {
374 /* pow(x, 1.0) = x */
376 } else if (tarval_is_minus_one(tv)) {
377 /* pow(x, -1.0) = 1/x */
385 mem = get_Call_mem(call);
386 dbg = get_irn_dbg_info(call);
389 ir_mode *mode = get_irn_mode(left);
392 irn = new_Const(get_mode_one(mode));
393 quot = new_rd_Quot(dbg, block, mem, irn, left, mode, op_pin_state_pinned);
394 mem = new_r_Proj(block, quot, mode_M, pn_Quot_M);
395 irn = new_r_Proj(block, quot, mode, pn_Quot_res);
396 reg_jmp = new_r_Proj(block, quot, mode_X, pn_Quot_X_regular);
397 exc_jmp = new_r_Proj(block, quot, mode_X, pn_Quot_X_except);
399 DBG_OPT_ALGSIM0(call, irn, FS_OPT_RTS_POW);
400 replace_call(irn, call, mem, reg_jmp, exc_jmp);
404 /* A mapper for the floating point exp. */
405 int i_mapper_exp(ir_node *call, void *ctx) {
406 ir_node *val = get_Call_param(call, 0);
409 if (is_Const(val) && is_Const_null(val)) {
411 ir_mode *mode = get_irn_mode(val);
412 ir_node *irn = new_Const(get_mode_one(mode));
413 ir_node *mem = get_Call_mem(call);
414 DBG_OPT_ALGSIM0(call, irn, FS_OPT_RTS_EXP);
415 replace_call(irn, call, mem, NULL, NULL);
422 * A mapper for mapping f(0.0) to 0.0.
424 static int i_mapper_zero_to_zero(ir_node *call, void *ctx, int reason) {
425 ir_node *val = get_Call_param(call, 0);
428 if (is_Const(val) && is_Const_null(val)) {
430 ir_node *mem = get_Call_mem(call);
431 DBG_OPT_ALGSIM0(call, val, reason);
432 replace_call(val, call, mem, NULL, NULL);
436 } /* i_mapper_zero_to_zero */
439 * A mapper for mapping f(1.0) to 0.0.
441 static int i_mapper_one_to_zero(ir_node *call, void *ctx, int reason) {
442 ir_node *val = get_Call_param(call, 0);
445 if (is_Const(val) && is_Const_one(val)) {
446 /* acos(1.0) = 0.0 */
447 ir_mode *mode = get_irn_mode(val);
448 ir_node *irn = new_Const(get_mode_null(mode));
449 ir_node *mem = get_Call_mem(call);
450 DBG_OPT_ALGSIM0(call, irn, reason);
451 replace_call(irn, call, mem, NULL, NULL);
455 } /* i_mapper_one_to_zero */
458 * A mapper for mapping a functions with the following characteristics:
462 static int i_mapper_symmetric_zero_to_one(ir_node *call, void *ctx, int reason) {
463 ir_node *val = get_Call_param(call, 0);
466 if (is_strictConv(val)) {
467 ir_node *op = get_Conv_op(val);
469 /* f(-x) = f(x) with strictConv */
470 ir_node *block = get_nodes_block(call);
471 ir_mode *mode = get_irn_mode(val);
472 dbg_info *dbg = get_irn_dbg_info(val);
474 op = get_Minus_op(op);
475 val = new_rd_Conv(dbg, block, op, mode);
478 set_Conv_strict(val, 1);
480 DBG_OPT_ALGSIM2(call, op, call, FS_OPT_RTS_SYMMETRIC);
481 set_Call_param(call, 0, val);
483 } else if (is_Minus(val)) {
485 val = get_Minus_op(val);
486 DBG_OPT_ALGSIM2(call, val, call, FS_OPT_RTS_SYMMETRIC);
487 set_Call_param(call, 0, val);
490 if (is_Const(val) && is_Const_null(val)) {
492 ir_mode *mode = get_irn_mode(val);
493 ir_node *irn = new_Const(get_mode_one(mode));
494 ir_node *mem = get_Call_mem(call);
495 DBG_OPT_ALGSIM0(call, irn, reason);
496 replace_call(irn, call, mem, NULL, NULL);
500 } /* i_mapper_symmetric_zero_to_one */
502 /* A mapper for the floating point log. */
503 int i_mapper_log(ir_node *call, void *ctx) {
505 return i_mapper_one_to_zero(call, ctx, FS_OPT_RTS_LOG);
508 /* A mapper for the floating point sin. */
509 int i_mapper_sin(ir_node *call, void *ctx) {
511 return i_mapper_zero_to_zero(call, ctx, FS_OPT_RTS_SIN);
514 /* A mapper for the floating point cos. */
515 int i_mapper_cos(ir_node *call, void *ctx) {
516 /* cos(0.0) = 1.0, cos(-x) = x */
517 return i_mapper_symmetric_zero_to_one(call, ctx, FS_OPT_RTS_COS);
520 /* A mapper for the floating point tan. */
521 int i_mapper_tan(ir_node *call, void *ctx) {
523 return i_mapper_zero_to_zero(call, ctx, FS_OPT_RTS_TAN);
526 /* A mapper for the floating point asin. */
527 int i_mapper_asin(ir_node *call, void *ctx) {
528 /* asin(0.0) = 0.0 */
529 return i_mapper_zero_to_zero(call, ctx, FS_OPT_RTS_ASIN);
530 } /* i_mapper_asin */
532 /* A mapper for the floating point acos. */
533 int i_mapper_acos(ir_node *call, void *ctx) {
534 /* acos(1.0) = 0.0 */
535 return i_mapper_one_to_zero(call, ctx, FS_OPT_RTS_ACOS);
536 } /* i_mapper_acos */
538 /* A mapper for the floating point atan. */
539 int i_mapper_atan(ir_node *call, void *ctx) {
540 /* atan(0.0) = 0.0 */
541 return i_mapper_zero_to_zero(call, ctx, FS_OPT_RTS_ATAN);
542 } /* i_mapper_atan */
544 /* A mapper for the floating point sinh. */
545 int i_mapper_sinh(ir_node *call, void *ctx) {
546 /* sinh(0.0) = 0.0 */
547 return i_mapper_zero_to_zero(call, ctx, FS_OPT_RTS_SINH);
548 } /* i_mapper_sinh */
550 /* A mapper for the floating point cosh. */
551 int i_mapper_cosh(ir_node *call, void *ctx) {
552 /* cosh(0.0) = 1.0, cosh(-x) = x */
553 return i_mapper_symmetric_zero_to_one(call, ctx, FS_OPT_RTS_COSH);
554 } /* i_mapper_cosh */
556 /* A mapper for the floating point tanh. */
557 int i_mapper_tanh(ir_node *call, void *ctx) {
558 /* tanh(0.0) = 0.0 */
559 return i_mapper_zero_to_zero(call, ctx, FS_OPT_RTS_TANH);
560 } /* i_mapper_tanh */
563 * Return the const entity that is accessed through the pointer ptr or
564 * NULL if there is no entity (or the entity is not constant).
566 * @param ptr the pointer
568 static ir_entity *get_const_entity(ir_node *ptr) {
569 /* FIXME: this cannot handle constant strings inside struct initializers yet */
570 if (is_Global(ptr)) {
571 ir_entity *ent = get_Global_entity(ptr);
573 if (get_entity_variability(ent) == variability_constant) {
574 /* a constant entity */
579 } /* get_const_entity */
582 * Calculate the value of strlen if possible.
584 * @param ent the entity
585 * @param res_tp the result type
587 * @return a Const node containing the strlen() result or NULL
588 * if the evaluation fails
590 static ir_node *eval_strlen(ir_entity *ent, ir_type *res_tp) {
591 ir_type *tp = get_entity_type(ent);
595 if (! is_Array_type(tp))
597 tp = get_array_element_type(tp);
598 if (! is_Primitive_type(tp))
600 mode = get_type_mode(tp);
602 /* FIXME: This is too restrict, as the type char might be more the 8bits */
603 if (!mode_is_int(mode) || get_mode_size_bits(mode) != 8)
606 n = get_compound_ent_n_values(ent);
607 for (i = 0; i < n; ++i) {
608 ir_node *irn = get_compound_ent_value(ent, i);
613 if (is_Const_null(irn)) {
614 /* found the length */
620 tarval *tv = new_tarval_from_long(len, get_type_mode(res_tp));
621 return new_Const_type(tv, res_tp);
626 /* A mapper for strlen */
627 int i_mapper_strlen(ir_node *call, void *ctx) {
628 ir_node *s = get_Call_param(call, 0);
629 ir_entity *ent = get_const_entity(s);
633 /* FIXME: this cannot handle constant strings inside struct initializers yet */
635 /* a constant entity */
636 ir_type *tp = get_Call_type(call);
639 tp = get_method_res_type(tp, 0);
640 irn = eval_strlen(ent, tp);
643 ir_node *mem = get_Call_mem(call);
644 DBG_OPT_ALGSIM0(call, irn, FS_OPT_RTS_STRLEN);
645 replace_call(irn, call, mem, NULL, NULL);
650 } /* i_mapper_strlen */
653 * Calculate the value of strlen if possible.
655 * @param left the left entity
656 * @param right the right entity
657 * @param res_tp the result type
659 * @return a Const node containing the strcmp() result or NULL
660 * if the evaluation fails
662 static ir_node *eval_strcmp(ir_entity *left, ir_entity *right, ir_type *res_tp) {
667 tp = get_entity_type(left);
668 if (! is_Array_type(tp))
670 tp = get_array_element_type(tp);
671 if (! is_Primitive_type(tp))
673 mode = get_type_mode(tp);
675 /* FIXME: This is too restrict, as the type char might be more the 8bits */
676 if (!mode_is_int(mode) || get_mode_size_bits(mode) != 8)
679 tp = get_entity_type(right);
680 if (! is_Array_type(tp))
682 tp = get_array_element_type(tp);
683 if (! is_Primitive_type(tp))
685 mode = get_type_mode(tp);
687 /* FIXME: This is too restrict, as the type char might be more the 8bits */
688 if (!mode_is_int(mode) || get_mode_size_bits(mode) != 8)
691 n = get_compound_ent_n_values(left);
692 n_r = get_compound_ent_n_values(right);
695 for (i = 0; i < n; ++i) {
700 irn = get_compound_ent_value(left, i);
703 tv = get_Const_tarval(irn);
704 v_l = get_tarval_long(tv);
706 irn = get_compound_ent_value(right, i);
709 tv = get_Const_tarval(irn);
710 v_r = get_tarval_long(tv);
727 /* we found an end */
728 tarval *tv = new_tarval_from_long(res, get_type_mode(res_tp));
729 return new_Const_type(tv, res_tp);
735 * Checks if an entity represents the empty string.
737 * @param ent the entity
739 * @return non-zero if ent represents the empty string
741 static int is_empty_string(ir_entity *ent) {
742 ir_type *tp = get_entity_type(ent);
747 if (! is_Array_type(tp))
749 tp = get_array_element_type(tp);
750 if (! is_Primitive_type(tp))
752 mode = get_type_mode(tp);
754 /* FIXME: This is too restrict, as the type char might be more the 8bits */
755 if (!mode_is_int(mode) || get_mode_size_bits(mode) != 8)
758 n = get_compound_ent_n_values(ent);
761 irn = get_compound_ent_value(ent, 0);
763 return is_Const(irn) && is_Const_null(irn);
764 } /* is_empty_string */
766 /* A mapper for strcmp */
767 int i_mapper_strcmp(ir_node *call, void *ctx) {
768 ir_node *left = get_Call_param(call, 0);
769 ir_node *right = get_Call_param(call, 1);
773 ir_type *call_tp = get_Call_type(call);
774 ir_type *res_tp = get_method_res_type(call_tp, 0);
775 ir_entity *ent_l, *ent_r;
781 /* do some type checks first */
782 if (! is_Primitive_type(res_tp))
784 char_tp = get_method_param_type(call_tp, 0);
785 if (char_tp != get_method_param_type(call_tp, 1))
787 if (! is_Pointer_type(char_tp))
789 char_tp = get_pointer_points_to_type(char_tp);
792 /* a strcmp(s, s) ==> 0 */
793 ir_node *mem = get_Call_mem(call);
794 ir_mode *mode = get_type_mode(res_tp);
796 irn = new_Const(get_mode_null(mode));
797 DBG_OPT_ALGSIM0(call, irn, FS_OPT_RTS_STRCMP);
798 replace_call(irn, call, mem, NULL, NULL);
801 ent_l = get_const_entity(left);
802 ent_r = get_const_entity(right);
804 if (ent_l != NULL && ent_r != NULL) {
805 /* both entities are const, try to evaluate */
806 irn = eval_strcmp(ent_l, ent_r, res_tp);
807 } else if (ent_l != NULL) {
808 if (is_empty_string(ent_l)) {
809 /* s strcmp("", s) ==> -(*s)*/
811 goto replace_by_call;
813 } else if (ent_r != NULL) {
814 if (is_empty_string(ent_r)) {
815 /* s strcmp(s, "") ==> (*s) */
816 ir_node *mem, *block;
822 mem = get_Call_mem(call);
823 block = get_nodes_block(call);
824 dbg = get_irn_dbg_info(call);
825 mode = get_type_mode(char_tp);
827 /* replace the strcmp by (*x) */
828 irn = new_rd_Load(dbg, block, mem, v, mode, 0);
829 mem = new_r_Proj(block, irn, mode_M, pn_Load_M);
830 exc = new_r_Proj(block, irn, mode_X, pn_Load_X_except);
831 reg = new_r_Proj(block, irn, mode_X, pn_Load_X_regular);
832 irn = new_r_Proj(block, irn, mode, pn_Load_res);
834 /* conv to the result mode */
835 mode = get_type_mode(res_tp);
836 irn = new_rd_Conv(dbg, block, irn, mode);
839 /* negate in the ("", s) case */
840 irn = new_rd_Minus(dbg, block, irn, mode);
846 ir_node *mem = get_Call_mem(call);
847 DBG_OPT_ALGSIM0(call, irn, FS_OPT_RTS_STRCMP);
848 replace_call(irn, call, mem, reg, exc);
853 } /* i_mapper_strcmp */
855 /* A mapper for strncmp */
856 int i_mapper_strncmp(ir_node *call, void *ctx) {
857 ir_node *left = get_Call_param(call, 0);
858 ir_node *right = get_Call_param(call, 1);
859 ir_node *len = get_Call_param(call, 2);
863 if (left == right || (is_Const(len) && is_Const_null(len))) {
864 /* a strncmp(s, s, len) ==> 0 OR
865 a strncmp(a, b, 0) ==> 0 */
866 ir_node *mem = get_Call_mem(call);
867 ir_node *adr = get_Call_ptr(call);
868 ir_entity *ent = get_SymConst_entity(adr);
869 ir_type *call_tp = get_entity_type(ent);
870 ir_type *res_tp = get_method_res_type(call_tp, 0);
871 ir_mode *mode = get_type_mode(res_tp);
873 irn = new_Const(get_mode_null(mode));
874 DBG_OPT_ALGSIM0(call, irn, FS_OPT_RTS_STRNCMP);
875 replace_call(irn, call, mem, NULL, NULL);
879 } /* i_mapper_strncmp */
881 /* A mapper for strcpy */
882 int i_mapper_strcpy(ir_node *call, void *ctx) {
883 ir_node *dst = get_Call_param(call, 0);
884 ir_node *src = get_Call_param(call, 1);
888 /* a strcpy(d, s) ==> d */
889 ir_node *mem = get_Call_mem(call);
890 ir_node *dst = get_Call_param(call, 0);
892 DBG_OPT_ALGSIM0(call, dst, FS_OPT_RTS_STRCPY);
893 replace_call(dst, call, mem, NULL, NULL);
897 } /* i_mapper_strcpy */
899 /* A mapper for memcpy */
900 int i_mapper_memcpy(ir_node *call, void *ctx) {
901 ir_node *dst = get_Call_param(call, 0);
902 ir_node *src = get_Call_param(call, 1);
903 ir_node *len = get_Call_param(call, 2);
906 if (dst == src || (is_Const(len) && is_Const_null(len))) {
907 /* a memcpy(d, d, len) ==> d OR
908 a memcpy(d, s, 0) ==> d */
909 ir_node *mem = get_Call_mem(call);
911 DBG_OPT_ALGSIM0(call, dst, FS_OPT_RTS_MEMCPY);
912 replace_call(dst, call, mem, NULL, NULL);
916 } /* i_mapper_memcpy */
918 /* A mapper for mempcpy */
919 int i_mapper_mempcpy(ir_node *call, void *ctx) {
920 ir_node *dst = get_Call_param(call, 0);
921 ir_node *src = get_Call_param(call, 1);
922 ir_node *len = get_Call_param(call, 2);
925 if (dst == src || (is_Const(len) && is_Const_null(len))) {
926 /* a memcpy(d, d, len) ==> d + len OR
927 a memcpy(d, s, 0) ==> d + 0 */
928 dbg_info *dbg = get_irn_dbg_info(call);
929 ir_node *mem = get_Call_mem(call);
930 ir_node *blk = get_nodes_block(call);
931 ir_mode *mode = get_irn_mode(dst);
932 ir_node *res = new_rd_Add(dbg, blk, dst, len, mode);
934 DBG_OPT_ALGSIM0(call, res, FS_OPT_RTS_MEMPCPY);
935 replace_call(res, call, mem, NULL, NULL);
939 } /* i_mapper_mempcpy */
941 /* A mapper for memmove */
942 int i_mapper_memmove(ir_node *call, void *ctx) {
943 ir_node *dst = get_Call_param(call, 0);
944 ir_node *src = get_Call_param(call, 1);
945 ir_node *len = get_Call_param(call, 2);
948 if (dst == src || (is_Const(len) && is_Const_null(len))) {
949 /* a memmove(d, d, len) ==> d OR
950 a memmove(d, s, 0) ==> d */
951 ir_node *mem = get_Call_mem(call);
953 DBG_OPT_ALGSIM0(call, dst, FS_OPT_RTS_MEMMOVE);
954 replace_call(dst, call, mem, NULL, NULL);
958 } /* i_mapper_memmove */
960 /* A mapper for memset */
961 int i_mapper_memset(ir_node *call, void *ctx) {
962 ir_node *len = get_Call_param(call, 2);
965 if (is_Const(len) && is_Const_null(len)) {
966 /* a memset(d, C, 0) ==> d */
967 ir_node *mem = get_Call_mem(call);
968 ir_node *dst = get_Call_param(call, 0);
970 DBG_OPT_ALGSIM0(call, dst, FS_OPT_RTS_MEMSET);
971 replace_call(dst, call, mem, NULL, NULL);
975 } /* i_mapper_memset */
977 /* A mapper for memcmp */
978 int i_mapper_memcmp(ir_node *call, void *ctx) {
979 ir_node *left = get_Call_param(call, 0);
980 ir_node *right = get_Call_param(call, 1);
981 ir_node *len = get_Call_param(call, 2);
985 if (left == right || (is_Const(len) && is_Const_null(len))) {
986 /* a memcmp(s, s, len) ==> 0 OR
987 a memcmp(a, b, 0) ==> 0 */
988 ir_node *mem = get_Call_mem(call);
989 ir_node *adr = get_Call_ptr(call);
990 ir_entity *ent = get_SymConst_entity(adr);
991 ir_type *call_tp = get_entity_type(ent);
992 ir_type *res_tp = get_method_res_type(call_tp, 0);
993 ir_mode *mode = get_type_mode(res_tp);
995 irn = new_Const(get_mode_null(mode));
996 DBG_OPT_ALGSIM0(call, irn, FS_OPT_RTS_STRNCMP);
997 replace_call(irn, call, mem, NULL, NULL);
1001 } /* i_mapper_memcmp */
1004 * Returns the result mode of a node.
1006 static ir_mode *get_irn_res_mode(ir_node *node) {
1007 switch (get_irn_opcode(node)) {
1008 case iro_Load: return get_Load_mode(node);
1009 case iro_Quot: return get_Quot_resmode(node);
1010 case iro_Div: return get_Div_resmode(node);
1011 case iro_Mod: return get_Mod_resmode(node);
1012 case iro_DivMod: return get_DivMod_resmode(node);
1013 default: return NULL;
1015 } /* get_irn_res_mode */
1017 #define LMAX(a, b) ((a) > (b) ? (a) : (b))
1019 /* A mapper for mapping unsupported instructions to runtime calls. */
1020 int i_mapper_RuntimeCall(ir_node *node, runtime_rt *rt) {
1021 int i, j, arity, first, n_param, n_res;
1024 ir_node *mem, *bl, *call, *addr, *res_proj;
1027 symconst_symbol sym;
1028 ir_mode *mode = get_irn_mode(node);
1030 if (mode != rt->mode)
1032 /* check if the result modes match */
1033 if (mode == mode_T && rt->res_mode != NULL) {
1034 mode = get_irn_res_mode(node);
1035 if (mode != rt->res_mode)
1039 arity = get_irn_arity(node);
1043 mtp = get_entity_type(rt->ent);
1044 n_param = get_method_n_params(mtp);
1045 irg = current_ir_graph;
1047 mem = get_irn_n(node, 0);
1048 if (get_irn_mode(mem) != mode_M) {
1049 mem = new_r_NoMem(irg);
1054 /* check if the modes of the predecessors match the parameter modes */
1055 if (arity - first != n_param)
1058 for (i = first, j = 0; i < arity; ++i, ++j) {
1059 ir_type *param_tp = get_method_param_type(mtp, j);
1060 ir_node *pred = get_irn_n(node, i);
1062 if (get_type_mode(param_tp) != get_irn_mode(pred))
1066 n_res = get_method_n_ress(mtp);
1068 /* step 0: calculate the number of needed Proj's */
1070 n_proj = LMAX(n_proj, rt->mem_proj_nr + 1);
1071 n_proj = LMAX(n_proj, rt->regular_proj_nr + 1);
1072 n_proj = LMAX(n_proj, rt->exc_proj_nr + 1);
1073 n_proj = LMAX(n_proj, rt->exc_mem_proj_nr + 1);
1074 n_proj = LMAX(n_proj, rt->res_proj_nr + 1);
1077 if (rt->mode != mode_T) /* must be mode_T */
1082 if (get_type_mode(get_method_res_type(mtp, 0)) != rt->mode)
1086 /* ok, when we are here, the number of predecessors match as well as the parameter modes */
1087 bl = get_nodes_block(node);
1091 NEW_ARR_A(ir_node *, in, n_param);
1092 for (i = 0; i < n_param; ++i)
1093 in[i] = get_irn_n(node, first + i);
1096 /* step 1: create the call */
1097 sym.entity_p = rt->ent;
1098 addr = new_r_SymConst(irg, mode_P_code, sym, symconst_addr_ent);
1099 call = new_rd_Call(get_irn_dbg_info(node), bl, mem, addr, n_param, in, mtp);
1100 set_irn_pinned(call, get_irn_pinned(node));
1103 res_proj = new_r_Proj(bl, call, mode_T, pn_Call_T_result);
1108 n_proj += n_res - 1;
1111 turn_into_tuple(node, n_proj);
1113 for (i = 0; i < n_proj; ++i)
1114 set_Tuple_pred(node, i, new_r_Bad(irg));
1115 if (rt->mem_proj_nr >= 0)
1116 set_Tuple_pred(node, rt->mem_proj_nr, new_r_Proj(bl, call, mode_M, pn_Call_M_regular));
1117 if (!is_NoMem(mem)) {
1118 /* Exceptions can only be handled with real memory */
1119 if (rt->regular_proj_nr >= 0)
1120 set_Tuple_pred(node, rt->regular_proj_nr, new_r_Proj(bl, call, mode_X, pn_Call_X_regular));
1121 if (rt->exc_proj_nr >= 0)
1122 set_Tuple_pred(node, rt->exc_proj_nr, new_r_Proj(bl, call, mode_X, pn_Call_X_except));
1123 if (rt->exc_mem_proj_nr >= 0)
1124 set_Tuple_pred(node, rt->mem_proj_nr, new_r_Proj(bl, call, mode_M, pn_Call_M_except));
1127 if (rt->res_proj_nr >= 0)
1128 for (i = 0; i < n_res; ++i)
1129 set_Tuple_pred(node, rt->res_proj_nr + i,
1130 new_r_Proj(bl, res_proj, get_type_mode(get_method_res_type(mtp, i)), i));
1133 /* only one return value supported */
1135 ir_mode *mode = get_type_mode(get_method_res_type(mtp, 0));
1137 res_proj = new_r_Proj(bl, call, mode_T, pn_Call_T_result);
1138 res_proj = new_r_Proj(bl, res_proj, mode, 0);
1140 exchange(node, res_proj);
1144 /* should not happen */
1146 } /* i_mapper_RuntimeCall */