2 * Copyright (C) 1995-2011 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 Backend node support for generic backend nodes.
23 * @author Sebastian Hack
26 * Backend node support for generic backend nodes.
27 * This file provides Perm, Copy, Spill and Reload nodes.
39 #include "bitfiddle.h"
40 #include "raw_bitset.h"
60 typedef struct be_node_attr_t {
64 /** The be_Return nodes attribute type. */
67 int num_ret_vals; /**< number of return values */
68 unsigned pop; /**< number of bytes that should be popped */
69 int emit_pop; /**< if set, emit pop bytes, even if pop = 0 */
72 /** The be_IncSP attribute type. */
75 int offset; /**< The offset by which the stack shall be
77 int align; /**< whether stack should be aligned after the
81 /** The be_Frame attribute type. */
88 /** The be_Call attribute type. */
91 ir_entity *ent; /**< called entity if this is a static call. */
93 ir_type *call_tp; /**< call type, copied from the original Call */
98 ir_entity **in_entities;
99 ir_entity **out_entities;
105 ir_op *op_be_MemPerm;
108 ir_op *op_be_CopyKeep;
115 ir_op *op_be_FrameAddr;
118 * Compare the attributes of two be_FrameAddr nodes.
120 * @return zero if both nodes have identically attributes
122 static int FrameAddr_cmp_attr(const ir_node *a, const ir_node *b)
124 const be_frame_attr_t *a_attr = (const be_frame_attr_t*)get_irn_generic_attr_const(a);
125 const be_frame_attr_t *b_attr = (const be_frame_attr_t*)get_irn_generic_attr_const(b);
127 if (a_attr->ent != b_attr->ent || a_attr->offset != b_attr->offset)
130 return be_nodes_equal(a, b);
134 * Compare the attributes of two be_Return nodes.
136 * @return zero if both nodes have identically attributes
138 static int Return_cmp_attr(const ir_node *a, const ir_node *b)
140 const be_return_attr_t *a_attr = (const be_return_attr_t*)get_irn_generic_attr_const(a);
141 const be_return_attr_t *b_attr = (const be_return_attr_t*)get_irn_generic_attr_const(b);
143 if (a_attr->num_ret_vals != b_attr->num_ret_vals)
145 if (a_attr->pop != b_attr->pop)
147 if (a_attr->emit_pop != b_attr->emit_pop)
150 return be_nodes_equal(a, b);
154 * Compare the attributes of two be_IncSP nodes.
156 * @return zero if both nodes have identically attributes
158 static int IncSP_cmp_attr(const ir_node *a, const ir_node *b)
160 const be_incsp_attr_t *a_attr = (const be_incsp_attr_t*)get_irn_generic_attr_const(a);
161 const be_incsp_attr_t *b_attr = (const be_incsp_attr_t*)get_irn_generic_attr_const(b);
163 if (a_attr->offset != b_attr->offset)
166 return be_nodes_equal(a, b);
170 * Compare the attributes of two be_Call nodes.
172 * @return zero if both nodes have identically attributes
174 static int Call_cmp_attr(const ir_node *a, const ir_node *b)
176 const be_call_attr_t *a_attr = (const be_call_attr_t*)get_irn_generic_attr_const(a);
177 const be_call_attr_t *b_attr = (const be_call_attr_t*)get_irn_generic_attr_const(b);
179 if (a_attr->ent != b_attr->ent ||
180 a_attr->call_tp != b_attr->call_tp)
183 return be_nodes_equal(a, b);
186 static arch_register_req_t *allocate_reg_req(const ir_node *node)
188 ir_graph *irg = get_irn_irg(node);
189 struct obstack *obst = be_get_be_obst(irg);
191 arch_register_req_t *req = OALLOCZ(obst, arch_register_req_t);
195 void be_set_constr_in(ir_node *node, int pos, const arch_register_req_t *req)
197 backend_info_t *info = be_get_info(node);
198 assert(pos < get_irn_arity(node));
199 info->in_reqs[pos] = req;
202 void be_set_constr_out(ir_node *node, int pos, const arch_register_req_t *req)
204 backend_info_t *info = be_get_info(node);
205 info->out_infos[pos].req = req;
209 * Initializes the generic attribute of all be nodes and return it.
211 static void init_node_attr(ir_node *node, int n_inputs, int n_outputs)
213 ir_graph *irg = get_irn_irg(node);
214 struct obstack *obst = be_get_be_obst(irg);
215 backend_info_t *info = be_get_info(node);
216 const arch_register_req_t **in_reqs;
220 assert(n_inputs == get_irn_arity(node));
221 in_reqs = OALLOCN(obst, const arch_register_req_t*, n_inputs);
222 for (i = 0; i < n_inputs; ++i) {
223 in_reqs[i] = arch_no_register_req;
226 in_reqs = NEW_ARR_F(const arch_register_req_t*, 0);
228 info->in_reqs = in_reqs;
230 if (n_outputs >= 0) {
232 info->out_infos = NEW_ARR_D(reg_out_info_t, obst, n_outputs);
233 memset(info->out_infos, 0, n_outputs * sizeof(info->out_infos[0]));
234 for (i = 0; i < n_outputs; ++i) {
235 info->out_infos[i].req = arch_no_register_req;
238 info->out_infos = NEW_ARR_F(reg_out_info_t, 0);
242 static void add_register_req_in(ir_node *node)
244 backend_info_t *info = be_get_info(node);
245 ARR_APP1(const arch_register_req_t*, info->in_reqs, arch_no_register_req);
248 ir_node *be_new_Spill(const arch_register_class_t *cls,
249 const arch_register_class_t *cls_frame, ir_node *bl,
250 ir_node *frame, ir_node *to_spill)
255 ir_graph *irg = get_Block_irg(bl);
259 res = new_ir_node(NULL, irg, bl, op_be_Spill, mode_M, 2, in);
260 init_node_attr(res, 2, 1);
261 a = (be_frame_attr_t*) get_irn_generic_attr(res);
264 a->base.exc.pin_state = op_pin_state_pinned;
266 be_node_set_reg_class_in(res, n_be_Spill_frame, cls_frame);
267 be_node_set_reg_class_in(res, n_be_Spill_val, cls);
268 arch_set_irn_register_req_out(res, 0, arch_no_register_req);
273 ir_node *be_new_Reload(const arch_register_class_t *cls,
274 const arch_register_class_t *cls_frame, ir_node *block,
275 ir_node *frame, ir_node *mem, ir_mode *mode)
279 ir_graph *irg = get_Block_irg(block);
284 res = new_ir_node(NULL, irg, block, op_be_Reload, mode, 2, in);
286 init_node_attr(res, 2, 1);
287 be_node_set_reg_class_out(res, 0, cls);
289 be_node_set_reg_class_in(res, n_be_Reload_frame, cls_frame);
290 arch_set_irn_flags(res, arch_irn_flags_rematerializable);
292 a = (be_frame_attr_t*) get_irn_generic_attr(res);
295 a->base.exc.pin_state = op_pin_state_pinned;
300 ir_node *be_get_Reload_mem(const ir_node *irn)
302 assert(be_is_Reload(irn));
303 return get_irn_n(irn, n_be_Reload_mem);
306 ir_node *be_get_Reload_frame(const ir_node *irn)
308 assert(be_is_Reload(irn));
309 return get_irn_n(irn, n_be_Reload_frame);
312 ir_node *be_get_Spill_val(const ir_node *irn)
314 assert(be_is_Spill(irn));
315 return get_irn_n(irn, n_be_Spill_val);
318 ir_node *be_get_Spill_frame(const ir_node *irn)
320 assert(be_is_Spill(irn));
321 return get_irn_n(irn, n_be_Spill_frame);
324 ir_node *be_new_Perm(const arch_register_class_t *cls, ir_node *block,
325 int n, ir_node *in[])
328 ir_graph *irg = get_Block_irg(block);
329 be_node_attr_t *attr;
331 ir_node *irn = new_ir_node(NULL, irg, block, op_be_Perm, mode_T, n, in);
332 init_node_attr(irn, n, n);
333 attr = (be_node_attr_t*) get_irn_generic_attr(irn);
334 attr->exc.pin_state = op_pin_state_pinned;
335 for (i = 0; i < n; ++i) {
336 const ir_node *input = in[i];
337 const arch_register_req_t *req = arch_get_irn_register_req(input);
338 if (req->width == 1) {
339 be_set_constr_in(irn, i, cls->class_req);
340 be_set_constr_out(irn, i, cls->class_req);
342 arch_register_req_t *new_req = allocate_reg_req(irn);
344 new_req->type = (req->type & arch_register_req_type_aligned);
345 new_req->width = req->width;
346 be_set_constr_in(irn, i, new_req);
347 be_set_constr_out(irn, i, new_req);
354 void be_Perm_reduce(ir_node *perm, int new_size, int *map)
356 int arity = get_irn_arity(perm);
357 const arch_register_req_t **old_in_reqs
358 = ALLOCAN(const arch_register_req_t*, arity);
359 reg_out_info_t *old_infos = ALLOCAN(reg_out_info_t, arity);
360 backend_info_t *info = be_get_info(perm);
364 assert(be_is_Perm(perm));
365 assert(new_size <= arity);
367 new_in = ALLOCAN(ir_node*, new_size);
369 /* save the old register data */
370 memcpy(old_in_reqs, info->in_reqs, arity * sizeof(old_in_reqs[0]));
371 memcpy(old_infos, info->out_infos, arity * sizeof(old_infos[0]));
373 /* compose the new in array and set the new register data directly */
374 for (i = 0; i < new_size; ++i) {
376 new_in[i] = get_irn_n(perm, idx);
377 info->in_reqs[i] = old_in_reqs[idx];
378 info->out_infos[i] = old_infos[idx];
381 set_irn_in(perm, new_size, new_in);
384 ir_node *be_new_MemPerm(ir_node *block, int n, ir_node *in[])
386 ir_graph *irg = get_Block_irg(block);
387 const arch_env_t *arch_env = be_get_irg_arch_env(irg);
388 ir_node *frame = get_irg_frame(irg);
389 const arch_register_t *sp = arch_env->sp;
391 be_memperm_attr_t *attr;
394 real_in = ALLOCAN(ir_node*, n + 1);
396 memcpy(&real_in[1], in, n * sizeof(real_in[0]));
398 irn = new_ir_node(NULL, irg, block, op_be_MemPerm, mode_T, n+1, real_in);
400 init_node_attr(irn, n + 1, n);
401 be_node_set_reg_class_in(irn, 0, sp->reg_class);
403 attr = (be_memperm_attr_t*)get_irn_generic_attr(irn);
404 attr->in_entities = OALLOCNZ(irg->obst, ir_entity*, n);
405 attr->out_entities = OALLOCNZ(irg->obst, ir_entity*, n);
410 ir_node *be_new_Copy(ir_node *bl, ir_node *op)
414 arch_register_req_t *req;
415 be_node_attr_t *attr;
416 ir_graph *irg = get_Block_irg(bl);
417 const arch_register_req_t *in_req = arch_get_irn_register_req(op);
418 const arch_register_class_t *cls = in_req->cls;
421 res = new_ir_node(NULL, irg, bl, op_be_Copy, get_irn_mode(op), 1, in);
422 init_node_attr(res, 1, 1);
423 attr = (be_node_attr_t*) get_irn_generic_attr(res);
424 attr->exc.pin_state = op_pin_state_floats;
425 be_node_set_reg_class_in(res, 0, cls);
426 be_node_set_reg_class_out(res, 0, cls);
428 req = allocate_reg_req(res);
430 req->type = arch_register_req_type_should_be_same
431 | (in_req->type & arch_register_req_type_aligned);
432 req->other_same = 1U << 0;
433 req->width = in_req->width;
434 be_set_constr_out(res, 0, req);
439 ir_node *be_get_Copy_op(const ir_node *cpy)
441 return get_irn_n(cpy, n_be_Copy_op);
444 void be_set_Copy_op(ir_node *cpy, ir_node *op)
446 set_irn_n(cpy, n_be_Copy_op, op);
449 ir_node *be_new_Keep(ir_node *block, int n, ir_node *in[])
453 ir_graph *irg = get_Block_irg(block);
454 be_node_attr_t *attr;
456 res = new_ir_node(NULL, irg, block, op_be_Keep, mode_ANY, -1, NULL);
457 init_node_attr(res, -1, 1);
458 attr = (be_node_attr_t*) get_irn_generic_attr(res);
459 attr->exc.pin_state = op_pin_state_pinned;
461 for (i = 0; i < n; ++i) {
462 add_irn_n(res, in[i]);
463 add_register_req_in(res);
470 void be_Keep_add_node(ir_node *keep, const arch_register_class_t *cls, ir_node *node)
474 assert(be_is_Keep(keep));
475 n = add_irn_n(keep, node);
476 add_register_req_in(keep);
477 be_node_set_reg_class_in(keep, n, cls);
480 ir_node *be_new_Call(dbg_info *dbg, ir_graph *irg, ir_node *bl, ir_node *mem,
481 ir_node *sp, ir_node *ptr, int n_outs, int n, ir_node *in[],
485 int real_n = n_be_Call_first_arg + n;
489 NEW_ARR_A(ir_node *, real_in, real_n);
490 real_in[n_be_Call_mem] = mem;
491 real_in[n_be_Call_sp] = sp;
492 real_in[n_be_Call_ptr] = ptr;
493 memcpy(&real_in[n_be_Call_first_arg], in, n * sizeof(in[0]));
495 irn = new_ir_node(dbg, irg, bl, op_be_Call, mode_T, real_n, real_in);
496 init_node_attr(irn, real_n, n_outs);
497 a = (be_call_attr_t*)get_irn_generic_attr(irn);
499 a->call_tp = call_tp;
501 a->base.exc.pin_state = op_pin_state_pinned;
505 ir_entity *be_Call_get_entity(const ir_node *call)
507 const be_call_attr_t *a = (const be_call_attr_t*)get_irn_generic_attr_const(call);
508 assert(be_is_Call(call));
512 void be_Call_set_entity(ir_node *call, ir_entity *ent)
514 be_call_attr_t *a = (be_call_attr_t*)get_irn_generic_attr(call);
515 assert(be_is_Call(call));
519 ir_type *be_Call_get_type(ir_node *call)
521 const be_call_attr_t *a = (const be_call_attr_t*)get_irn_generic_attr_const(call);
522 assert(be_is_Call(call));
526 void be_Call_set_type(ir_node *call, ir_type *call_tp)
528 be_call_attr_t *a = (be_call_attr_t*)get_irn_generic_attr(call);
529 assert(be_is_Call(call));
530 a->call_tp = call_tp;
533 void be_Call_set_pop(ir_node *call, unsigned pop)
535 be_call_attr_t *a = (be_call_attr_t*)get_irn_generic_attr(call);
539 unsigned be_Call_get_pop(const ir_node *call)
541 const be_call_attr_t *a = (const be_call_attr_t*)get_irn_generic_attr_const(call);
545 ir_node *be_new_Return(dbg_info *dbg, ir_graph *irg, ir_node *block, int n_res,
546 unsigned pop, int n, ir_node *in[])
551 res = new_ir_node(dbg, irg, block, op_be_Return, mode_X, n, in);
552 init_node_attr(res, n, 1);
553 be_set_constr_out(res, 0, arch_no_register_req);
555 a = (be_return_attr_t*)get_irn_generic_attr(res);
556 a->num_ret_vals = n_res;
559 a->base.exc.pin_state = op_pin_state_pinned;
564 int be_Return_get_n_rets(const ir_node *ret)
566 const be_return_attr_t *a = (const be_return_attr_t*)get_irn_generic_attr_const(ret);
567 return a->num_ret_vals;
570 unsigned be_Return_get_pop(const ir_node *ret)
572 const be_return_attr_t *a = (const be_return_attr_t*)get_irn_generic_attr_const(ret);
576 int be_Return_get_emit_pop(const ir_node *ret)
578 const be_return_attr_t *a = (const be_return_attr_t*)get_irn_generic_attr_const(ret);
582 void be_Return_set_emit_pop(ir_node *ret, int emit_pop)
584 be_return_attr_t *a = (be_return_attr_t*)get_irn_generic_attr(ret);
585 a->emit_pop = emit_pop;
588 ir_node *be_new_IncSP(const arch_register_t *sp, ir_node *bl,
589 ir_node *old_sp, int offset, int align)
594 ir_graph *irg = get_Block_irg(bl);
597 irn = new_ir_node(NULL, irg, bl, op_be_IncSP, sp->reg_class->mode,
599 init_node_attr(irn, 1, 1);
600 a = (be_incsp_attr_t*)get_irn_generic_attr(irn);
603 a->base.exc.pin_state = op_pin_state_pinned;
605 /* Set output constraint to stack register. */
606 be_node_set_reg_class_in(irn, 0, sp->reg_class);
607 be_set_constr_single_reg_out(irn, 0, sp, arch_register_req_type_produces_sp);
612 ir_node *be_new_AddSP(const arch_register_t *sp, ir_node *bl, ir_node *old_sp,
616 ir_node *in[n_be_AddSP_last];
618 be_node_attr_t *attr;
620 in[n_be_AddSP_old_sp] = old_sp;
621 in[n_be_AddSP_size] = sz;
623 irg = get_Block_irg(bl);
624 irn = new_ir_node(NULL, irg, bl, op_be_AddSP, mode_T, n_be_AddSP_last, in);
625 init_node_attr(irn, n_be_AddSP_last, pn_be_AddSP_last);
626 attr = (be_node_attr_t*) get_irn_generic_attr(irn);
627 attr->exc.pin_state = op_pin_state_pinned;
629 /* Set output constraint to stack register. */
630 be_set_constr_single_reg_in(irn, n_be_AddSP_old_sp, sp,
631 arch_register_req_type_none);
632 be_node_set_reg_class_in(irn, n_be_AddSP_size, sp->reg_class);
633 be_set_constr_single_reg_out(irn, pn_be_AddSP_sp, sp,
634 arch_register_req_type_produces_sp);
639 ir_node *be_new_SubSP(const arch_register_t *sp, ir_node *bl, ir_node *old_sp, ir_node *sz)
642 ir_node *in[n_be_SubSP_last];
644 be_node_attr_t *attr;
646 in[n_be_SubSP_old_sp] = old_sp;
647 in[n_be_SubSP_size] = sz;
649 irg = get_Block_irg(bl);
650 irn = new_ir_node(NULL, irg, bl, op_be_SubSP, mode_T, n_be_SubSP_last, in);
651 init_node_attr(irn, n_be_SubSP_last, pn_be_SubSP_last);
652 attr = (be_node_attr_t*) get_irn_generic_attr(irn);
653 attr->exc.pin_state = op_pin_state_pinned;
655 /* Set output constraint to stack register. */
656 be_set_constr_single_reg_in(irn, n_be_SubSP_old_sp, sp,
657 arch_register_req_type_none);
658 be_node_set_reg_class_in(irn, n_be_SubSP_size, sp->reg_class);
659 be_set_constr_single_reg_out(irn, pn_be_SubSP_sp, sp, arch_register_req_type_produces_sp);
664 ir_node *be_new_Start(dbg_info *dbgi, ir_node *bl, int n_outs)
667 ir_graph *irg = get_Block_irg(bl);
668 be_node_attr_t *attr;
670 res = new_ir_node(dbgi, irg, bl, op_be_Start, mode_T, 0, NULL);
671 init_node_attr(res, 0, n_outs);
672 attr = (be_node_attr_t*) get_irn_generic_attr(res);
673 attr->exc.pin_state = op_pin_state_pinned;
678 ir_node *be_new_FrameAddr(const arch_register_class_t *cls_frame, ir_node *bl, ir_node *frame, ir_entity *ent)
683 ir_graph *irg = get_Block_irg(bl);
686 irn = new_ir_node(NULL, irg, bl, op_be_FrameAddr, get_irn_mode(frame), 1, in);
687 init_node_attr(irn, 1, 1);
688 a = (be_frame_attr_t*)get_irn_generic_attr(irn);
691 a->base.exc.pin_state = op_pin_state_floats;
692 be_node_set_reg_class_in(irn, 0, cls_frame);
693 be_node_set_reg_class_out(irn, 0, cls_frame);
695 return optimize_node(irn);
698 ir_node *be_get_FrameAddr_frame(const ir_node *node)
700 assert(be_is_FrameAddr(node));
701 return get_irn_n(node, n_be_FrameAddr_ptr);
704 ir_entity *be_get_FrameAddr_entity(const ir_node *node)
706 const be_frame_attr_t *attr = (const be_frame_attr_t*)get_irn_generic_attr_const(node);
710 ir_node *be_new_CopyKeep(ir_node *bl, ir_node *src, int n, ir_node *in_keep[])
713 ir_node **in = ALLOCAN(ir_node*, n + 1);
714 ir_graph *irg = get_Block_irg(bl);
715 const arch_register_req_t *req = arch_get_irn_register_req(src);
716 const arch_register_class_t *cls = req->cls;
717 ir_mode *mode = get_irn_mode(src);
718 be_node_attr_t *attr;
721 memcpy(&in[1], in_keep, n * sizeof(in[0]));
722 irn = new_ir_node(NULL, irg, bl, op_be_CopyKeep, mode, n + 1, in);
723 init_node_attr(irn, n + 1, 1);
724 attr = (be_node_attr_t*) get_irn_generic_attr(irn);
725 attr->exc.pin_state = op_pin_state_floats;
726 be_node_set_reg_class_in(irn, 0, cls);
727 be_node_set_reg_class_out(irn, 0, cls);
732 ir_node *be_new_CopyKeep_single(ir_node *bl, ir_node *src, ir_node *keep)
734 return be_new_CopyKeep(bl, src, 1, &keep);
737 ir_node *be_get_CopyKeep_op(const ir_node *cpy)
739 return get_irn_n(cpy, n_be_CopyKeep_op);
742 void be_set_CopyKeep_op(ir_node *cpy, ir_node *op)
744 set_irn_n(cpy, n_be_CopyKeep_op, op);
747 static bool be_has_frame_entity(const ir_node *irn)
749 switch (get_irn_opcode(irn)) {
759 ir_entity *be_get_frame_entity(const ir_node *irn)
761 if (be_has_frame_entity(irn)) {
762 const be_frame_attr_t *a = (const be_frame_attr_t*)get_irn_generic_attr_const(irn);
768 int be_get_frame_offset(const ir_node *irn)
770 assert(is_be_node(irn));
771 if (be_has_frame_entity(irn)) {
772 const be_frame_attr_t *a = (const be_frame_attr_t*)get_irn_generic_attr_const(irn);
778 void be_set_MemPerm_in_entity(const ir_node *irn, int n, ir_entity *ent)
780 const be_memperm_attr_t *attr = (const be_memperm_attr_t*)get_irn_generic_attr_const(irn);
782 assert(be_is_MemPerm(irn));
783 assert(n < be_get_MemPerm_entity_arity(irn));
785 attr->in_entities[n] = ent;
788 ir_entity* be_get_MemPerm_in_entity(const ir_node* irn, int n)
790 const be_memperm_attr_t *attr = (const be_memperm_attr_t*)get_irn_generic_attr_const(irn);
792 assert(be_is_MemPerm(irn));
793 assert(n < be_get_MemPerm_entity_arity(irn));
795 return attr->in_entities[n];
798 void be_set_MemPerm_out_entity(const ir_node *irn, int n, ir_entity *ent)
800 const be_memperm_attr_t *attr = (const be_memperm_attr_t*)get_irn_generic_attr_const(irn);
802 assert(be_is_MemPerm(irn));
803 assert(n < be_get_MemPerm_entity_arity(irn));
805 attr->out_entities[n] = ent;
808 ir_entity* be_get_MemPerm_out_entity(const ir_node* irn, int n)
810 const be_memperm_attr_t *attr = (const be_memperm_attr_t*)get_irn_generic_attr_const(irn);
812 assert(be_is_MemPerm(irn));
813 assert(n < be_get_MemPerm_entity_arity(irn));
815 return attr->out_entities[n];
818 int be_get_MemPerm_entity_arity(const ir_node *irn)
820 return get_irn_arity(irn) - 1;
823 const arch_register_req_t *be_create_reg_req(struct obstack *obst,
824 const arch_register_t *reg, arch_register_req_type_t additional_types)
826 arch_register_req_t *req = OALLOC(obst, arch_register_req_t);
827 const arch_register_class_t *cls = arch_register_get_class(reg);
828 unsigned *limited_bitset;
830 limited_bitset = rbitset_obstack_alloc(obst, arch_register_class_n_regs(cls));
831 rbitset_set(limited_bitset, arch_register_get_index(reg));
833 req->type = arch_register_req_type_limited | additional_types;
835 req->limited = limited_bitset;
840 void be_set_constr_single_reg_in(ir_node *node, int pos,
841 const arch_register_t *reg, arch_register_req_type_t additional_types)
843 const arch_register_req_t *req;
845 if (additional_types == 0) {
846 req = reg->single_req;
848 ir_graph *irg = get_irn_irg(node);
849 struct obstack *obst = be_get_be_obst(irg);
850 req = be_create_reg_req(obst, reg, additional_types);
852 be_set_constr_in(node, pos, req);
855 void be_set_constr_single_reg_out(ir_node *node, int pos,
856 const arch_register_t *reg, arch_register_req_type_t additional_types)
858 ir_graph *irg = get_irn_irg(node);
859 be_irg_t *birg = be_birg_from_irg(irg);
860 const arch_register_req_t *req;
862 /* if we have an ignore register, add ignore flag and just assign it */
863 if (!rbitset_is_set(birg->allocatable_regs, reg->global_index)) {
864 additional_types |= arch_register_req_type_ignore;
867 if (additional_types == 0) {
868 req = reg->single_req;
870 struct obstack *obst = be_get_be_obst(irg);
871 req = be_create_reg_req(obst, reg, additional_types);
874 arch_set_irn_register_out(node, pos, reg);
875 be_set_constr_out(node, pos, req);
878 void be_node_set_reg_class_in(ir_node *irn, int pos,
879 const arch_register_class_t *cls)
881 be_set_constr_in(irn, pos, cls->class_req);
884 void be_node_set_reg_class_out(ir_node *irn, int pos,
885 const arch_register_class_t *cls)
887 be_set_constr_out(irn, pos, cls->class_req);
890 ir_node *be_get_IncSP_pred(ir_node *irn)
892 assert(be_is_IncSP(irn));
893 return get_irn_n(irn, 0);
896 void be_set_IncSP_pred(ir_node *incsp, ir_node *pred)
898 assert(be_is_IncSP(incsp));
899 set_irn_n(incsp, 0, pred);
902 void be_set_IncSP_offset(ir_node *irn, int offset)
904 be_incsp_attr_t *a = (be_incsp_attr_t*)get_irn_generic_attr(irn);
905 assert(be_is_IncSP(irn));
909 int be_get_IncSP_offset(const ir_node *irn)
911 const be_incsp_attr_t *a = (const be_incsp_attr_t*)get_irn_generic_attr_const(irn);
912 assert(be_is_IncSP(irn));
916 int be_get_IncSP_align(const ir_node *irn)
918 const be_incsp_attr_t *a = (const be_incsp_attr_t*)get_irn_generic_attr_const(irn);
919 assert(be_is_IncSP(irn));
923 static ir_entity *be_node_get_frame_entity(const ir_node *irn)
925 return be_get_frame_entity(irn);
928 void be_node_set_frame_entity(ir_node *irn, ir_entity *ent)
932 assert(be_has_frame_entity(irn));
934 a = (be_frame_attr_t*)get_irn_generic_attr(irn);
938 static void be_node_set_frame_offset(ir_node *irn, int offset)
942 if (!be_has_frame_entity(irn))
945 a = (be_frame_attr_t*)get_irn_generic_attr(irn);
949 static int be_node_get_sp_bias(const ir_node *irn)
951 if (be_is_IncSP(irn))
952 return be_get_IncSP_offset(irn);
954 return -(int)be_Call_get_pop(irn);
962 static const arch_irn_ops_t be_node_irn_ops = {
963 be_node_get_frame_entity,
964 be_node_set_frame_offset,
966 NULL, /* get_inverse */
967 NULL, /* get_op_estimated_cost */
968 NULL, /* possible_memory_operand */
969 NULL, /* perform_memory_operand */
972 static int get_start_reg_index(ir_graph *irg, const arch_register_t *reg)
974 ir_node *start = get_irg_start(irg);
975 unsigned n_outs = arch_get_irn_n_outs(start);
978 /* do a naive linear search... */
979 for (i = 0; i < (int)n_outs; ++i) {
980 const arch_register_req_t *out_req
981 = arch_get_irn_register_req_out(start, i);
982 if (! (out_req->type & arch_register_req_type_limited))
984 if (out_req->cls != arch_register_get_class(reg))
986 if (!rbitset_is_set(out_req->limited, reg->index))
990 panic("Tried querying undefined register '%s' at Start", reg->name);
993 ir_node *be_get_initial_reg_value(ir_graph *irg, const arch_register_t *reg)
995 int i = get_start_reg_index(irg, reg);
996 ir_node *start = get_irg_start(irg);
997 ir_mode *mode = arch_register_class_mode(arch_register_get_class(reg));
999 foreach_out_edge(start, edge) {
1000 ir_node *proj = get_edge_src_irn(edge);
1001 if (!is_Proj(proj)) // maybe End/Anchor
1003 if (get_Proj_proj(proj) == i) {
1007 return new_r_Proj(start, mode, i);
1010 int be_find_return_reg_input(ir_node *ret, const arch_register_t *reg)
1012 int arity = get_irn_arity(ret);
1014 /* do a naive linear search... */
1015 for (i = 0; i < arity; ++i) {
1016 const arch_register_req_t *req = arch_get_irn_register_req_in(ret, i);
1017 if (! (req->type & arch_register_req_type_limited))
1019 if (req->cls != arch_register_get_class(reg))
1021 if (!rbitset_is_set(req->limited, reg->index))
1025 panic("Tried querying undefined register '%s' at Return", reg->name);
1028 static ir_entity* dummy_get_frame_entity(const ir_node *node)
1034 static void dummy_set_frame_offset(ir_node *node, int bias)
1038 panic("should not be called");
1041 static int dummy_get_sp_bias(const ir_node *node)
1047 /* for "middleend" nodes */
1048 static const arch_irn_ops_t dummy_be_irn_ops = {
1049 dummy_get_frame_entity,
1050 dummy_set_frame_offset,
1052 NULL, /* get_inverse */
1053 NULL, /* get_op_estimated_cost */
1054 NULL, /* possible_memory_operand */
1055 NULL, /* perform_memory_operand */
1060 ir_node *be_new_Phi(ir_node *block, int n_ins, ir_node **ins, ir_mode *mode,
1061 const arch_register_req_t *req)
1063 ir_graph *irg = get_irn_irg(block);
1064 struct obstack *obst = be_get_be_obst(irg);
1065 backend_info_t *info;
1068 ir_node *phi = new_r_Phi(block, n_ins, ins, mode);
1069 info = be_get_info(phi);
1070 info->out_infos = NEW_ARR_D(reg_out_info_t, obst, 1);
1071 memset(info->out_infos, 0, 1 * sizeof(info->out_infos[0]));
1072 info->in_reqs = OALLOCN(obst, const arch_register_req_t*, n_ins);
1074 info->out_infos[0].req = req;
1075 for (i = 0; i < n_ins; ++i) {
1076 info->in_reqs[i] = req;
1082 void be_set_phi_reg_req(ir_node *node, const arch_register_req_t *req)
1084 int arity = get_irn_arity(node);
1087 backend_info_t *info = be_get_info(node);
1088 info->out_infos[0].req = req;
1089 for (i = 0; i < arity; ++i) {
1090 info->in_reqs[i] = req;
1093 assert(mode_is_datab(get_irn_mode(node)));
1096 void be_dump_phi_reg_reqs(FILE *F, const ir_node *node, dump_reason_t reason)
1099 case dump_node_opcode_txt:
1100 fputs(get_op_name(get_irn_op(node)), F);
1102 case dump_node_mode_txt:
1103 fprintf(F, "%s", get_mode_name(get_irn_mode(node)));
1105 case dump_node_nodeattr_txt:
1107 case dump_node_info_txt:
1109 backend_info_t *info = be_get_info(node);
1110 if (info != NULL && info->out_infos[0].req != NULL) {
1111 arch_dump_reqs_and_registers(F, node);
1121 static const arch_irn_ops_t phi_irn_ops = {
1122 dummy_get_frame_entity,
1123 dummy_set_frame_offset,
1125 NULL, /* get_inverse */
1126 NULL, /* get_op_estimated_cost */
1127 NULL, /* possible_memory_operand */
1128 NULL, /* perform_memory_operand */
1134 * ir_op-Operation: dump a be node to file
1136 static void dump_node(FILE *f, const ir_node *irn, dump_reason_t reason)
1138 assert(is_be_node(irn));
1141 case dump_node_opcode_txt:
1142 fputs(get_op_name(get_irn_op(irn)), f);
1144 case dump_node_mode_txt:
1145 if (be_is_Copy(irn) || be_is_CopyKeep(irn)) {
1146 fprintf(f, "%s", get_mode_name(get_irn_mode(irn)));
1149 case dump_node_nodeattr_txt:
1150 if (be_is_Call(irn)) {
1151 const be_call_attr_t *a = (const be_call_attr_t*)get_irn_generic_attr_const(irn);
1153 fprintf(f, " [%s] ", get_entity_name(a->ent));
1155 if (be_is_IncSP(irn)) {
1156 const be_incsp_attr_t *attr = (const be_incsp_attr_t*)get_irn_generic_attr_const(irn);
1157 fprintf(f, " [%d] ", attr->offset);
1160 case dump_node_info_txt:
1161 arch_dump_reqs_and_registers(f, irn);
1163 if (be_has_frame_entity(irn)) {
1164 const be_frame_attr_t *a = (const be_frame_attr_t*)get_irn_generic_attr_const(irn);
1166 unsigned size = get_type_size_bytes(get_entity_type(a->ent));
1167 ir_fprintf(f, "frame entity: %+F, offset 0x%x (%d), size 0x%x (%d) bytes\n",
1168 a->ent, a->offset, a->offset, size, size);
1173 switch (get_irn_opcode(irn)) {
1175 const be_incsp_attr_t *a = (const be_incsp_attr_t*)get_irn_generic_attr_const(irn);
1176 fprintf(f, "align: %d\n", a->align);
1177 fprintf(f, "offset: %d\n", a->offset);
1181 const be_call_attr_t *a = (const be_call_attr_t*)get_irn_generic_attr_const(irn);
1184 fprintf(f, "\ncalling: %s\n", get_entity_name(a->ent));
1189 for (i = 0; i < be_get_MemPerm_entity_arity(irn); ++i) {
1190 ir_entity *in, *out;
1191 in = be_get_MemPerm_in_entity(irn, i);
1192 out = be_get_MemPerm_out_entity(irn, i);
1194 fprintf(f, "\nin[%d]: %s\n", i, get_entity_name(in));
1197 fprintf(f, "\nout[%d]: %s\n", i, get_entity_name(out));
1211 * Copies the backend specific attributes from old node to new node.
1213 static void copy_attr(ir_graph *irg, const ir_node *old_node, ir_node *new_node)
1215 const void *old_attr = get_irn_generic_attr_const(old_node);
1216 void *new_attr = get_irn_generic_attr(new_node);
1217 struct obstack *obst = be_get_be_obst(irg);
1218 backend_info_t *old_info = be_get_info(old_node);
1219 backend_info_t *new_info = be_get_info(new_node);
1221 assert(is_be_node(old_node));
1222 assert(is_be_node(new_node));
1224 memcpy(new_attr, old_attr, get_op_attr_size(get_irn_op(old_node)));
1226 new_info->flags = old_info->flags;
1227 if (old_info->out_infos != NULL) {
1228 size_t n_outs = ARR_LEN(old_info->out_infos);
1229 /* need dyanmic out infos? */
1230 if (be_is_Perm(new_node)) {
1231 new_info->out_infos = NEW_ARR_F(reg_out_info_t, n_outs);
1233 new_info->out_infos = NEW_ARR_D(reg_out_info_t, obst, n_outs);
1235 memcpy(new_info->out_infos, old_info->out_infos,
1236 n_outs * sizeof(new_info->out_infos[0]));
1238 new_info->out_infos = NULL;
1242 if (old_info->in_reqs != NULL) {
1243 unsigned n_ins = get_irn_arity(old_node);
1244 /* need dynamic in infos? */
1245 if (get_irn_op(old_node)->opar == oparity_dynamic) {
1246 new_info->in_reqs = NEW_ARR_F(const arch_register_req_t*, n_ins);
1248 new_info->in_reqs = OALLOCN(obst,const arch_register_req_t*, n_ins);
1250 memcpy(new_info->in_reqs, old_info->in_reqs,
1251 n_ins * sizeof(new_info->in_reqs[0]));
1253 new_info->in_reqs = NULL;
1257 int is_be_node(const ir_node *irn)
1259 return get_op_ops(get_irn_op(irn))->be_ops == &be_node_irn_ops;
1262 static ir_op *new_be_op(unsigned code, const char *name, op_pin_state p,
1263 irop_flags flags, op_arity opar, size_t attr_size)
1265 ir_op *res = new_ir_op(code, name, p, flags, opar, 0, attr_size);
1266 res->ops.dump_node = dump_node;
1267 res->ops.copy_attr = copy_attr;
1268 res->ops.be_ops = &be_node_irn_ops;
1272 void be_init_op(void)
1276 assert(op_be_Spill == NULL);
1278 /* Acquire all needed opcodes. */
1279 op_be_Spill = new_be_op(beo_Spill, "be_Spill", op_pin_state_exc_pinned, irop_flag_none, oparity_unary, sizeof(be_frame_attr_t));
1280 op_be_Reload = new_be_op(beo_Reload, "be_Reload", op_pin_state_exc_pinned, irop_flag_none, oparity_zero, sizeof(be_frame_attr_t));
1281 op_be_Perm = new_be_op(beo_Perm, "be_Perm", op_pin_state_exc_pinned, irop_flag_none, oparity_variable, sizeof(be_node_attr_t));
1282 op_be_MemPerm = new_be_op(beo_MemPerm, "be_MemPerm", op_pin_state_exc_pinned, irop_flag_none, oparity_variable, sizeof(be_memperm_attr_t));
1283 op_be_Copy = new_be_op(beo_Copy, "be_Copy", op_pin_state_exc_pinned, irop_flag_none, oparity_unary, sizeof(be_node_attr_t));
1284 op_be_Keep = new_be_op(beo_Keep, "be_Keep", op_pin_state_exc_pinned, irop_flag_keep, oparity_dynamic, sizeof(be_node_attr_t));
1285 op_be_CopyKeep = new_be_op(beo_CopyKeep, "be_CopyKeep", op_pin_state_exc_pinned, irop_flag_keep, oparity_variable, sizeof(be_node_attr_t));
1286 op_be_Call = new_be_op(beo_Call, "be_Call", op_pin_state_exc_pinned, irop_flag_fragile|irop_flag_uses_memory, oparity_variable, sizeof(be_call_attr_t));
1287 ir_op_set_memory_index(op_be_Call, n_be_Call_mem);
1288 ir_op_set_fragile_indices(op_be_Call, pn_be_Call_X_regular, pn_be_Call_X_except);
1289 op_be_Return = new_be_op(beo_Return, "be_Return", op_pin_state_exc_pinned, irop_flag_cfopcode, oparity_variable, sizeof(be_return_attr_t));
1290 op_be_AddSP = new_be_op(beo_AddSP, "be_AddSP", op_pin_state_exc_pinned, irop_flag_none, oparity_unary, sizeof(be_node_attr_t));
1291 op_be_SubSP = new_be_op(beo_SubSP, "be_SubSP", op_pin_state_exc_pinned, irop_flag_none, oparity_unary, sizeof(be_node_attr_t));
1292 op_be_IncSP = new_be_op(beo_IncSP, "be_IncSP", op_pin_state_exc_pinned, irop_flag_none, oparity_unary, sizeof(be_incsp_attr_t));
1293 op_be_Start = new_be_op(beo_Start, "be_Start", op_pin_state_exc_pinned, irop_flag_none, oparity_zero, sizeof(be_node_attr_t));
1294 op_be_FrameAddr = new_be_op(beo_FrameAddr, "be_FrameAddr", op_pin_state_exc_pinned, irop_flag_none, oparity_unary, sizeof(be_frame_attr_t));
1296 op_be_Spill->ops.node_cmp_attr = FrameAddr_cmp_attr;
1297 op_be_Reload->ops.node_cmp_attr = FrameAddr_cmp_attr;
1298 op_be_Perm->ops.node_cmp_attr = be_nodes_equal;
1299 op_be_MemPerm->ops.node_cmp_attr = be_nodes_equal;
1300 op_be_Copy->ops.node_cmp_attr = be_nodes_equal;
1301 op_be_Keep->ops.node_cmp_attr = be_nodes_equal;
1302 op_be_CopyKeep->ops.node_cmp_attr = be_nodes_equal;
1303 op_be_Call->ops.node_cmp_attr = Call_cmp_attr;
1304 op_be_Return->ops.node_cmp_attr = Return_cmp_attr;
1305 op_be_AddSP->ops.node_cmp_attr = be_nodes_equal;
1306 op_be_SubSP->ops.node_cmp_attr = be_nodes_equal;
1307 op_be_IncSP->ops.node_cmp_attr = IncSP_cmp_attr;
1308 op_be_Start->ops.node_cmp_attr = be_nodes_equal;
1309 op_be_FrameAddr->ops.node_cmp_attr = FrameAddr_cmp_attr;
1311 /* attach out dummy_ops to middle end nodes */
1312 for (opc = iro_First; opc <= iro_Last; ++opc) {
1313 ir_op *op = ir_get_opcode(opc);
1314 assert(op->ops.be_ops == NULL);
1315 op->ops.be_ops = &dummy_be_irn_ops;
1318 op_Phi->ops.be_ops = &phi_irn_ops;
1321 void be_finish_op(void)
1323 free_ir_op(op_be_Spill); op_be_Spill = NULL;
1324 free_ir_op(op_be_Reload); op_be_Reload = NULL;
1325 free_ir_op(op_be_Perm); op_be_Perm = NULL;
1326 free_ir_op(op_be_MemPerm); op_be_MemPerm = NULL;
1327 free_ir_op(op_be_Copy); op_be_Copy = NULL;
1328 free_ir_op(op_be_Keep); op_be_Keep = NULL;
1329 free_ir_op(op_be_CopyKeep); op_be_CopyKeep = NULL;
1330 free_ir_op(op_be_Call); op_be_Call = NULL;
1331 free_ir_op(op_be_Return); op_be_Return = NULL;
1332 free_ir_op(op_be_IncSP); op_be_IncSP = NULL;
1333 free_ir_op(op_be_AddSP); op_be_AddSP = NULL;
1334 free_ir_op(op_be_SubSP); op_be_SubSP = NULL;
1335 free_ir_op(op_be_Start); op_be_Start = NULL;
1336 free_ir_op(op_be_FrameAddr); op_be_FrameAddr = NULL;