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"
51 #include "irbackedge_t.h"
52 #include "irverify_t.h"
62 typedef struct be_node_attr_t {
66 /** The be_Return nodes attribute type. */
69 int num_ret_vals; /**< number of return values */
70 unsigned pop; /**< number of bytes that should be popped */
71 int emit_pop; /**< if set, emit pop bytes, even if pop = 0 */
74 /** The be_IncSP attribute type. */
77 int offset; /**< The offset by which the stack shall be
79 int align; /**< whether stack should be aligned after the
83 /** The be_Frame attribute type. */
90 /** The be_Call attribute type. */
93 ir_entity *ent; /**< called entity if this is a static call. */
95 ir_type *call_tp; /**< call type, copied from the original Call */
100 ir_entity **in_entities;
101 ir_entity **out_entities;
107 ir_op *op_be_MemPerm;
110 ir_op *op_be_CopyKeep;
117 ir_op *op_be_FrameAddr;
120 * Compare the attributes of two be_FrameAddr nodes.
122 * @return zero if both nodes have identically attributes
124 static int FrameAddr_cmp_attr(const ir_node *a, const ir_node *b)
126 const be_frame_attr_t *a_attr = (const be_frame_attr_t*)get_irn_generic_attr_const(a);
127 const be_frame_attr_t *b_attr = (const be_frame_attr_t*)get_irn_generic_attr_const(b);
129 if (a_attr->ent != b_attr->ent || a_attr->offset != b_attr->offset)
132 return be_nodes_equal(a, b);
136 * Compare the attributes of two be_Return nodes.
138 * @return zero if both nodes have identically attributes
140 static int Return_cmp_attr(const ir_node *a, const ir_node *b)
142 const be_return_attr_t *a_attr = (const be_return_attr_t*)get_irn_generic_attr_const(a);
143 const be_return_attr_t *b_attr = (const be_return_attr_t*)get_irn_generic_attr_const(b);
145 if (a_attr->num_ret_vals != b_attr->num_ret_vals)
147 if (a_attr->pop != b_attr->pop)
149 if (a_attr->emit_pop != b_attr->emit_pop)
152 return be_nodes_equal(a, b);
156 * Compare the attributes of two be_IncSP nodes.
158 * @return zero if both nodes have identically attributes
160 static int IncSP_cmp_attr(const ir_node *a, const ir_node *b)
162 const be_incsp_attr_t *a_attr = (const be_incsp_attr_t*)get_irn_generic_attr_const(a);
163 const be_incsp_attr_t *b_attr = (const be_incsp_attr_t*)get_irn_generic_attr_const(b);
165 if (a_attr->offset != b_attr->offset)
168 return be_nodes_equal(a, b);
172 * Compare the attributes of two be_Call nodes.
174 * @return zero if both nodes have identically attributes
176 static int Call_cmp_attr(const ir_node *a, const ir_node *b)
178 const be_call_attr_t *a_attr = (const be_call_attr_t*)get_irn_generic_attr_const(a);
179 const be_call_attr_t *b_attr = (const be_call_attr_t*)get_irn_generic_attr_const(b);
181 if (a_attr->ent != b_attr->ent ||
182 a_attr->call_tp != b_attr->call_tp)
185 return be_nodes_equal(a, b);
188 static arch_register_req_t *allocate_reg_req(const ir_node *node)
190 ir_graph *irg = get_irn_irg(node);
191 struct obstack *obst = be_get_be_obst(irg);
193 arch_register_req_t *req = OALLOCZ(obst, arch_register_req_t);
197 void be_set_constr_in(ir_node *node, int pos, const arch_register_req_t *req)
199 backend_info_t *info = be_get_info(node);
200 assert(pos < get_irn_arity(node));
201 info->in_reqs[pos] = req;
204 void be_set_constr_out(ir_node *node, int pos, const arch_register_req_t *req)
206 backend_info_t *info = be_get_info(node);
207 info->out_infos[pos].req = req;
211 * Initializes the generic attribute of all be nodes and return it.
213 static void init_node_attr(ir_node *node, int n_inputs, int n_outputs)
215 ir_graph *irg = get_irn_irg(node);
216 struct obstack *obst = be_get_be_obst(irg);
217 backend_info_t *info = be_get_info(node);
218 const arch_register_req_t **in_reqs;
222 assert(n_inputs == get_irn_arity(node));
223 in_reqs = OALLOCN(obst, const arch_register_req_t*, n_inputs);
224 for (i = 0; i < n_inputs; ++i) {
225 in_reqs[i] = arch_no_register_req;
228 in_reqs = NEW_ARR_F(const arch_register_req_t*, 0);
230 info->in_reqs = in_reqs;
232 if (n_outputs >= 0) {
234 info->out_infos = NEW_ARR_D(reg_out_info_t, obst, n_outputs);
235 memset(info->out_infos, 0, n_outputs * sizeof(info->out_infos[0]));
236 for (i = 0; i < n_outputs; ++i) {
237 info->out_infos[i].req = arch_no_register_req;
240 info->out_infos = NEW_ARR_F(reg_out_info_t, 0);
244 static void add_register_req_in(ir_node *node, const arch_register_req_t *req)
246 backend_info_t *info = be_get_info(node);
247 ARR_APP1(const arch_register_req_t*, info->in_reqs, req);
250 ir_node *be_new_Spill(const arch_register_class_t *cls,
251 const arch_register_class_t *cls_frame, ir_node *bl,
252 ir_node *frame, ir_node *to_spill)
257 ir_graph *irg = get_Block_irg(bl);
261 res = new_ir_node(NULL, irg, bl, op_be_Spill, mode_M, 2, in);
262 init_node_attr(res, 2, 1);
263 a = (be_frame_attr_t*) get_irn_generic_attr(res);
266 a->base.exc.pin_state = op_pin_state_pinned;
268 be_node_set_reg_class_in(res, n_be_Spill_frame, cls_frame);
269 be_node_set_reg_class_in(res, n_be_Spill_val, cls);
270 arch_set_irn_register_req_out(res, 0, arch_no_register_req);
275 ir_node *be_new_Reload(const arch_register_class_t *cls,
276 const arch_register_class_t *cls_frame, ir_node *block,
277 ir_node *frame, ir_node *mem, ir_mode *mode)
281 ir_graph *irg = get_Block_irg(block);
286 res = new_ir_node(NULL, irg, block, op_be_Reload, mode, 2, in);
288 init_node_attr(res, 2, 1);
289 be_node_set_reg_class_out(res, 0, cls);
291 be_node_set_reg_class_in(res, n_be_Reload_frame, cls_frame);
292 arch_set_irn_flags(res, arch_irn_flags_rematerializable);
294 a = (be_frame_attr_t*) get_irn_generic_attr(res);
297 a->base.exc.pin_state = op_pin_state_pinned;
302 ir_node *be_get_Reload_mem(const ir_node *irn)
304 assert(be_is_Reload(irn));
305 return get_irn_n(irn, n_be_Reload_mem);
308 ir_node *be_get_Reload_frame(const ir_node *irn)
310 assert(be_is_Reload(irn));
311 return get_irn_n(irn, n_be_Reload_frame);
314 ir_node *be_get_Spill_val(const ir_node *irn)
316 assert(be_is_Spill(irn));
317 return get_irn_n(irn, n_be_Spill_val);
320 ir_node *be_get_Spill_frame(const ir_node *irn)
322 assert(be_is_Spill(irn));
323 return get_irn_n(irn, n_be_Spill_frame);
326 ir_node *be_new_Perm(const arch_register_class_t *cls, ir_node *block,
327 int n, ir_node *in[])
330 ir_graph *irg = get_Block_irg(block);
331 be_node_attr_t *attr;
333 ir_node *irn = new_ir_node(NULL, irg, block, op_be_Perm, mode_T, n, in);
334 init_node_attr(irn, n, n);
335 attr = (be_node_attr_t*) get_irn_generic_attr(irn);
336 attr->exc.pin_state = op_pin_state_pinned;
337 for (i = 0; i < n; ++i) {
338 const ir_node *input = in[i];
339 const arch_register_req_t *req = arch_get_irn_register_req(input);
340 if (req->width == 1) {
341 be_set_constr_in(irn, i, cls->class_req);
342 be_set_constr_out(irn, i, cls->class_req);
344 arch_register_req_t *new_req = allocate_reg_req(irn);
346 new_req->type = (req->type & arch_register_req_type_aligned);
347 new_req->width = req->width;
348 be_set_constr_in(irn, i, new_req);
349 be_set_constr_out(irn, i, new_req);
356 void be_Perm_reduce(ir_node *perm, int new_size, int *map)
358 int arity = get_irn_arity(perm);
359 const arch_register_req_t **old_in_reqs
360 = ALLOCAN(const arch_register_req_t*, arity);
361 reg_out_info_t *old_infos = ALLOCAN(reg_out_info_t, arity);
362 backend_info_t *info = be_get_info(perm);
366 assert(be_is_Perm(perm));
367 assert(new_size <= arity);
369 new_in = ALLOCAN(ir_node*, new_size);
371 /* save the old register data */
372 memcpy(old_in_reqs, info->in_reqs, arity * sizeof(old_in_reqs[0]));
373 memcpy(old_infos, info->out_infos, arity * sizeof(old_infos[0]));
375 /* compose the new in array and set the new register data directly */
376 for (i = 0; i < new_size; ++i) {
378 new_in[i] = get_irn_n(perm, idx);
379 info->in_reqs[i] = old_in_reqs[idx];
380 info->out_infos[i] = old_infos[idx];
383 set_irn_in(perm, new_size, new_in);
386 ir_node *be_new_MemPerm(ir_node *block, int n, ir_node *in[])
388 ir_graph *irg = get_Block_irg(block);
389 const arch_env_t *arch_env = be_get_irg_arch_env(irg);
390 ir_node *frame = get_irg_frame(irg);
391 const arch_register_t *sp = arch_env->sp;
393 be_memperm_attr_t *attr;
396 real_in = ALLOCAN(ir_node*, n + 1);
398 memcpy(&real_in[1], in, n * sizeof(real_in[0]));
400 irn = new_ir_node(NULL, irg, block, op_be_MemPerm, mode_T, n+1, real_in);
402 init_node_attr(irn, n + 1, n);
403 be_node_set_reg_class_in(irn, 0, sp->reg_class);
405 attr = (be_memperm_attr_t*)get_irn_generic_attr(irn);
406 attr->in_entities = OALLOCNZ(irg->obst, ir_entity*, n);
407 attr->out_entities = OALLOCNZ(irg->obst, ir_entity*, n);
412 ir_node *be_new_Copy(ir_node *bl, ir_node *op)
416 arch_register_req_t *req;
417 be_node_attr_t *attr;
418 ir_graph *irg = get_Block_irg(bl);
419 const arch_register_req_t *in_req = arch_get_irn_register_req(op);
420 const arch_register_class_t *cls = in_req->cls;
423 res = new_ir_node(NULL, irg, bl, op_be_Copy, get_irn_mode(op), 1, in);
424 init_node_attr(res, 1, 1);
425 attr = (be_node_attr_t*) get_irn_generic_attr(res);
426 attr->exc.pin_state = op_pin_state_floats;
427 be_node_set_reg_class_in(res, 0, cls);
428 be_node_set_reg_class_out(res, 0, cls);
430 req = allocate_reg_req(res);
432 req->type = arch_register_req_type_should_be_same
433 | (in_req->type & arch_register_req_type_aligned);
434 req->other_same = 1U << 0;
435 req->width = in_req->width;
436 be_set_constr_out(res, 0, req);
441 ir_node *be_get_Copy_op(const ir_node *cpy)
443 return get_irn_n(cpy, n_be_Copy_op);
446 ir_node *be_new_Keep(ir_node *block, int n, ir_node *in[])
450 ir_graph *irg = get_Block_irg(block);
451 be_node_attr_t *attr;
453 res = new_ir_node(NULL, irg, block, op_be_Keep, mode_ANY, -1, NULL);
454 init_node_attr(res, -1, 1);
455 attr = (be_node_attr_t*) get_irn_generic_attr(res);
456 attr->exc.pin_state = op_pin_state_pinned;
458 for (i = 0; i < n; ++i) {
459 ir_node *pred = in[i];
460 add_irn_n(res, pred);
461 const arch_register_req_t *req = arch_get_irn_register_req(pred);
462 req = req->cls != NULL ? req->cls->class_req : arch_no_register_req;
463 add_register_req_in(res, req);
470 void be_Keep_add_node(ir_node *keep, const arch_register_class_t *cls, ir_node *node)
472 assert(be_is_Keep(keep));
473 add_irn_n(keep, node);
474 add_register_req_in(keep, cls->class_req);
477 ir_node *be_new_Call(dbg_info *dbg, ir_graph *irg, ir_node *bl, ir_node *mem,
478 const arch_register_req_t *sp_req, ir_node *sp,
479 const arch_register_req_t *ptr_req, ir_node *ptr,
480 int n_outs, int n, ir_node *in[], ir_type *call_tp)
483 int real_n = n_be_Call_first_arg + n;
487 NEW_ARR_A(ir_node *, real_in, real_n);
488 real_in[n_be_Call_mem] = mem;
489 real_in[n_be_Call_sp] = sp;
490 real_in[n_be_Call_ptr] = ptr;
491 memcpy(&real_in[n_be_Call_first_arg], in, n * sizeof(in[0]));
493 irn = new_ir_node(dbg, irg, bl, op_be_Call, mode_T, real_n, real_in);
494 init_node_attr(irn, real_n, n_outs);
495 a = (be_call_attr_t*)get_irn_generic_attr(irn);
497 a->call_tp = call_tp;
499 a->base.exc.pin_state = op_pin_state_pinned;
500 be_set_constr_in(irn, n_be_Call_sp, sp_req);
501 be_set_constr_in(irn, n_be_Call_ptr, ptr_req);
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);
728 for (int i = 0; i < n; ++i) {
729 ir_node *pred = in_keep[i];
730 const arch_register_req_t *req = arch_get_irn_register_req(pred);
731 req = req->cls != NULL ? req->cls->class_req : arch_no_register_req;
732 be_set_constr_in(irn, i+1, req);
738 ir_node *be_new_CopyKeep_single(ir_node *bl, ir_node *src, ir_node *keep)
740 return be_new_CopyKeep(bl, src, 1, &keep);
743 ir_node *be_get_CopyKeep_op(const ir_node *cpy)
745 return get_irn_n(cpy, n_be_CopyKeep_op);
748 void be_set_CopyKeep_op(ir_node *cpy, ir_node *op)
750 set_irn_n(cpy, n_be_CopyKeep_op, op);
753 static bool be_has_frame_entity(const ir_node *irn)
755 switch (get_irn_opcode(irn)) {
765 ir_entity *be_get_frame_entity(const ir_node *irn)
767 if (be_has_frame_entity(irn)) {
768 const be_frame_attr_t *a = (const be_frame_attr_t*)get_irn_generic_attr_const(irn);
774 int be_get_frame_offset(const ir_node *irn)
776 assert(is_be_node(irn));
777 if (be_has_frame_entity(irn)) {
778 const be_frame_attr_t *a = (const be_frame_attr_t*)get_irn_generic_attr_const(irn);
784 void be_set_MemPerm_in_entity(const ir_node *irn, int n, ir_entity *ent)
786 const be_memperm_attr_t *attr = (const be_memperm_attr_t*)get_irn_generic_attr_const(irn);
788 assert(be_is_MemPerm(irn));
789 assert(n < be_get_MemPerm_entity_arity(irn));
791 attr->in_entities[n] = ent;
794 ir_entity* be_get_MemPerm_in_entity(const ir_node* irn, int n)
796 const be_memperm_attr_t *attr = (const be_memperm_attr_t*)get_irn_generic_attr_const(irn);
798 assert(be_is_MemPerm(irn));
799 assert(n < be_get_MemPerm_entity_arity(irn));
801 return attr->in_entities[n];
804 void be_set_MemPerm_out_entity(const ir_node *irn, int n, ir_entity *ent)
806 const be_memperm_attr_t *attr = (const be_memperm_attr_t*)get_irn_generic_attr_const(irn);
808 assert(be_is_MemPerm(irn));
809 assert(n < be_get_MemPerm_entity_arity(irn));
811 attr->out_entities[n] = ent;
814 ir_entity* be_get_MemPerm_out_entity(const ir_node* irn, int n)
816 const be_memperm_attr_t *attr = (const be_memperm_attr_t*)get_irn_generic_attr_const(irn);
818 assert(be_is_MemPerm(irn));
819 assert(n < be_get_MemPerm_entity_arity(irn));
821 return attr->out_entities[n];
824 int be_get_MemPerm_entity_arity(const ir_node *irn)
826 return get_irn_arity(irn) - 1;
829 const arch_register_req_t *be_create_reg_req(struct obstack *obst,
830 const arch_register_t *reg, arch_register_req_type_t additional_types)
832 arch_register_req_t *req = OALLOC(obst, arch_register_req_t);
833 const arch_register_class_t *cls = arch_register_get_class(reg);
834 unsigned *limited_bitset;
836 limited_bitset = rbitset_obstack_alloc(obst, arch_register_class_n_regs(cls));
837 rbitset_set(limited_bitset, arch_register_get_index(reg));
839 req->type = arch_register_req_type_limited | additional_types;
841 req->limited = limited_bitset;
846 void be_set_constr_single_reg_in(ir_node *node, int pos,
847 const arch_register_t *reg, arch_register_req_type_t additional_types)
849 const arch_register_req_t *req;
851 if (additional_types == 0) {
852 req = reg->single_req;
854 ir_graph *irg = get_irn_irg(node);
855 struct obstack *obst = be_get_be_obst(irg);
856 req = be_create_reg_req(obst, reg, additional_types);
858 be_set_constr_in(node, pos, req);
861 void be_set_constr_single_reg_out(ir_node *node, int pos,
862 const arch_register_t *reg, arch_register_req_type_t additional_types)
864 ir_graph *irg = get_irn_irg(node);
865 be_irg_t *birg = be_birg_from_irg(irg);
866 const arch_register_req_t *req;
868 /* if we have an ignore register, add ignore flag and just assign it */
869 if (!rbitset_is_set(birg->allocatable_regs, reg->global_index)) {
870 additional_types |= arch_register_req_type_ignore;
873 if (additional_types == 0) {
874 req = reg->single_req;
876 struct obstack *obst = be_get_be_obst(irg);
877 req = be_create_reg_req(obst, reg, additional_types);
880 arch_set_irn_register_out(node, pos, reg);
881 be_set_constr_out(node, pos, req);
884 void be_node_set_reg_class_in(ir_node *irn, int pos,
885 const arch_register_class_t *cls)
887 be_set_constr_in(irn, pos, cls->class_req);
890 void be_node_set_reg_class_out(ir_node *irn, int pos,
891 const arch_register_class_t *cls)
893 be_set_constr_out(irn, pos, cls->class_req);
896 ir_node *be_get_IncSP_pred(ir_node *irn)
898 assert(be_is_IncSP(irn));
899 return get_irn_n(irn, 0);
902 void be_set_IncSP_pred(ir_node *incsp, ir_node *pred)
904 assert(be_is_IncSP(incsp));
905 set_irn_n(incsp, 0, pred);
908 void be_set_IncSP_offset(ir_node *irn, int offset)
910 be_incsp_attr_t *a = (be_incsp_attr_t*)get_irn_generic_attr(irn);
911 assert(be_is_IncSP(irn));
915 int be_get_IncSP_offset(const ir_node *irn)
917 const be_incsp_attr_t *a = (const be_incsp_attr_t*)get_irn_generic_attr_const(irn);
918 assert(be_is_IncSP(irn));
922 int be_get_IncSP_align(const ir_node *irn)
924 const be_incsp_attr_t *a = (const be_incsp_attr_t*)get_irn_generic_attr_const(irn);
925 assert(be_is_IncSP(irn));
929 static ir_entity *be_node_get_frame_entity(const ir_node *irn)
931 return be_get_frame_entity(irn);
934 void be_node_set_frame_entity(ir_node *irn, ir_entity *ent)
938 assert(be_has_frame_entity(irn));
940 a = (be_frame_attr_t*)get_irn_generic_attr(irn);
944 static void be_node_set_frame_offset(ir_node *irn, int offset)
948 if (!be_has_frame_entity(irn))
951 a = (be_frame_attr_t*)get_irn_generic_attr(irn);
955 static int be_node_get_sp_bias(const ir_node *irn)
957 if (be_is_IncSP(irn))
958 return be_get_IncSP_offset(irn);
960 return -(int)be_Call_get_pop(irn);
968 static const arch_irn_ops_t be_node_irn_ops = {
969 be_node_get_frame_entity,
970 be_node_set_frame_offset,
972 NULL, /* get_inverse */
973 NULL, /* get_op_estimated_cost */
974 NULL, /* possible_memory_operand */
975 NULL, /* perform_memory_operand */
978 static int get_start_reg_index(ir_graph *irg, const arch_register_t *reg)
980 ir_node *start = get_irg_start(irg);
981 unsigned n_outs = arch_get_irn_n_outs(start);
984 /* do a naive linear search... */
985 for (i = 0; i < (int)n_outs; ++i) {
986 const arch_register_req_t *out_req
987 = arch_get_irn_register_req_out(start, i);
988 if (! (out_req->type & arch_register_req_type_limited))
990 if (out_req->cls != arch_register_get_class(reg))
992 if (!rbitset_is_set(out_req->limited, reg->index))
996 panic("Tried querying undefined register '%s' at Start", reg->name);
999 ir_node *be_get_initial_reg_value(ir_graph *irg, const arch_register_t *reg)
1001 int i = get_start_reg_index(irg, reg);
1002 ir_node *start = get_irg_start(irg);
1003 ir_mode *mode = arch_register_class_mode(arch_register_get_class(reg));
1005 foreach_out_edge(start, edge) {
1006 ir_node *proj = get_edge_src_irn(edge);
1007 if (!is_Proj(proj)) // maybe End/Anchor
1009 if (get_Proj_proj(proj) == i) {
1013 return new_r_Proj(start, mode, i);
1016 int be_find_return_reg_input(ir_node *ret, const arch_register_t *reg)
1018 int arity = get_irn_arity(ret);
1020 /* do a naive linear search... */
1021 for (i = 0; i < arity; ++i) {
1022 const arch_register_req_t *req = arch_get_irn_register_req_in(ret, i);
1023 if (! (req->type & arch_register_req_type_limited))
1025 if (req->cls != arch_register_get_class(reg))
1027 if (!rbitset_is_set(req->limited, reg->index))
1031 panic("Tried querying undefined register '%s' at Return", reg->name);
1034 static ir_entity* dummy_get_frame_entity(const ir_node *node)
1040 static void dummy_set_frame_offset(ir_node *node, int bias)
1044 panic("should not be called");
1047 static int dummy_get_sp_bias(const ir_node *node)
1053 /* for "middleend" nodes */
1054 static const arch_irn_ops_t dummy_be_irn_ops = {
1055 dummy_get_frame_entity,
1056 dummy_set_frame_offset,
1058 NULL, /* get_inverse */
1059 NULL, /* get_op_estimated_cost */
1060 NULL, /* possible_memory_operand */
1061 NULL, /* perform_memory_operand */
1066 ir_node *be_new_Phi(ir_node *block, int n_ins, ir_node **ins, ir_mode *mode,
1067 const arch_register_req_t *req)
1069 ir_graph *irg = get_irn_irg(block);
1070 struct obstack *obst = be_get_be_obst(irg);
1071 backend_info_t *info;
1074 ir_node *phi = new_ir_node(NULL, irg, block, op_Phi, mode, n_ins, ins);
1075 phi->attr.phi.u.backedge = new_backedge_arr(irg->obst, n_ins);
1076 info = be_get_info(phi);
1077 info->out_infos = NEW_ARR_D(reg_out_info_t, obst, 1);
1078 memset(info->out_infos, 0, 1 * sizeof(info->out_infos[0]));
1079 info->in_reqs = OALLOCN(obst, const arch_register_req_t*, n_ins);
1081 info->out_infos[0].req = req;
1082 for (i = 0; i < n_ins; ++i) {
1083 info->in_reqs[i] = req;
1085 irn_verify_irg(phi, irg);
1086 phi = optimize_node(phi);
1090 void be_set_phi_reg_req(ir_node *node, const arch_register_req_t *req)
1092 int arity = get_irn_arity(node);
1095 backend_info_t *info = be_get_info(node);
1096 info->out_infos[0].req = req;
1097 for (i = 0; i < arity; ++i) {
1098 info->in_reqs[i] = req;
1101 assert(mode_is_datab(get_irn_mode(node)));
1104 void be_dump_phi_reg_reqs(FILE *F, const ir_node *node, dump_reason_t reason)
1107 case dump_node_opcode_txt:
1108 fputs(get_op_name(get_irn_op(node)), F);
1110 case dump_node_mode_txt:
1111 fprintf(F, "%s", get_mode_name(get_irn_mode(node)));
1113 case dump_node_nodeattr_txt:
1115 case dump_node_info_txt:
1117 backend_info_t *info = be_get_info(node);
1118 if (info != NULL && info->out_infos[0].req != NULL) {
1119 arch_dump_reqs_and_registers(F, node);
1129 static const arch_irn_ops_t phi_irn_ops = {
1130 dummy_get_frame_entity,
1131 dummy_set_frame_offset,
1133 NULL, /* get_inverse */
1134 NULL, /* get_op_estimated_cost */
1135 NULL, /* possible_memory_operand */
1136 NULL, /* perform_memory_operand */
1142 * ir_op-Operation: dump a be node to file
1144 static void dump_node(FILE *f, const ir_node *irn, dump_reason_t reason)
1146 assert(is_be_node(irn));
1149 case dump_node_opcode_txt:
1150 fputs(get_op_name(get_irn_op(irn)), f);
1152 case dump_node_mode_txt:
1153 if (be_is_Copy(irn) || be_is_CopyKeep(irn)) {
1154 fprintf(f, "%s", get_mode_name(get_irn_mode(irn)));
1157 case dump_node_nodeattr_txt:
1158 if (be_is_Call(irn)) {
1159 const be_call_attr_t *a = (const be_call_attr_t*)get_irn_generic_attr_const(irn);
1161 fprintf(f, " [%s] ", get_entity_name(a->ent));
1163 if (be_is_IncSP(irn)) {
1164 const be_incsp_attr_t *attr = (const be_incsp_attr_t*)get_irn_generic_attr_const(irn);
1165 fprintf(f, " [%d] ", attr->offset);
1168 case dump_node_info_txt:
1169 arch_dump_reqs_and_registers(f, irn);
1171 if (be_has_frame_entity(irn)) {
1172 const be_frame_attr_t *a = (const be_frame_attr_t*)get_irn_generic_attr_const(irn);
1174 unsigned size = get_type_size_bytes(get_entity_type(a->ent));
1175 ir_fprintf(f, "frame entity: %+F, offset 0x%x (%d), size 0x%x (%d) bytes\n",
1176 a->ent, a->offset, a->offset, size, size);
1181 switch (get_irn_opcode(irn)) {
1183 const be_incsp_attr_t *a = (const be_incsp_attr_t*)get_irn_generic_attr_const(irn);
1184 fprintf(f, "align: %d\n", a->align);
1185 fprintf(f, "offset: %d\n", a->offset);
1189 const be_call_attr_t *a = (const be_call_attr_t*)get_irn_generic_attr_const(irn);
1192 fprintf(f, "\ncalling: %s\n", get_entity_name(a->ent));
1197 for (i = 0; i < be_get_MemPerm_entity_arity(irn); ++i) {
1198 ir_entity *in, *out;
1199 in = be_get_MemPerm_in_entity(irn, i);
1200 out = be_get_MemPerm_out_entity(irn, i);
1202 fprintf(f, "\nin[%d]: %s\n", i, get_entity_name(in));
1205 fprintf(f, "\nout[%d]: %s\n", i, get_entity_name(out));
1219 * Copies the backend specific attributes from old node to new node.
1221 static void copy_attr(ir_graph *irg, const ir_node *old_node, ir_node *new_node)
1223 const void *old_attr = get_irn_generic_attr_const(old_node);
1224 void *new_attr = get_irn_generic_attr(new_node);
1225 struct obstack *obst = be_get_be_obst(irg);
1226 backend_info_t *old_info = be_get_info(old_node);
1227 backend_info_t *new_info = be_get_info(new_node);
1229 assert(is_be_node(old_node));
1230 assert(is_be_node(new_node));
1232 memcpy(new_attr, old_attr, get_op_attr_size(get_irn_op(old_node)));
1234 new_info->flags = old_info->flags;
1235 if (old_info->out_infos != NULL) {
1236 size_t n_outs = ARR_LEN(old_info->out_infos);
1237 /* need dyanmic out infos? */
1238 if (be_is_Perm(new_node)) {
1239 new_info->out_infos = NEW_ARR_F(reg_out_info_t, n_outs);
1241 new_info->out_infos = NEW_ARR_D(reg_out_info_t, obst, n_outs);
1243 memcpy(new_info->out_infos, old_info->out_infos,
1244 n_outs * sizeof(new_info->out_infos[0]));
1246 new_info->out_infos = NULL;
1250 if (old_info->in_reqs != NULL) {
1251 unsigned n_ins = get_irn_arity(old_node);
1252 /* need dynamic in infos? */
1253 if (get_irn_op(old_node)->opar == oparity_dynamic) {
1254 new_info->in_reqs = NEW_ARR_F(const arch_register_req_t*, n_ins);
1256 new_info->in_reqs = OALLOCN(obst,const arch_register_req_t*, n_ins);
1258 memcpy(new_info->in_reqs, old_info->in_reqs,
1259 n_ins * sizeof(new_info->in_reqs[0]));
1261 new_info->in_reqs = NULL;
1265 int is_be_node(const ir_node *irn)
1267 return get_op_ops(get_irn_op(irn))->be_ops == &be_node_irn_ops;
1270 static ir_op *new_be_op(unsigned code, const char *name, op_pin_state p,
1271 irop_flags flags, op_arity opar, size_t attr_size)
1273 ir_op *res = new_ir_op(code, name, p, flags, opar, 0, attr_size);
1274 res->ops.dump_node = dump_node;
1275 res->ops.copy_attr = copy_attr;
1276 res->ops.be_ops = &be_node_irn_ops;
1280 void be_init_op(void)
1284 assert(op_be_Spill == NULL);
1286 /* Acquire all needed opcodes. */
1287 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));
1288 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));
1289 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));
1290 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));
1291 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));
1292 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));
1293 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));
1294 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));
1295 ir_op_set_memory_index(op_be_Call, n_be_Call_mem);
1296 ir_op_set_fragile_indices(op_be_Call, pn_be_Call_X_regular, pn_be_Call_X_except);
1297 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));
1298 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));
1299 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));
1300 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));
1301 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));
1302 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));
1304 op_be_Spill->ops.node_cmp_attr = FrameAddr_cmp_attr;
1305 op_be_Reload->ops.node_cmp_attr = FrameAddr_cmp_attr;
1306 op_be_Perm->ops.node_cmp_attr = be_nodes_equal;
1307 op_be_MemPerm->ops.node_cmp_attr = be_nodes_equal;
1308 op_be_Copy->ops.node_cmp_attr = be_nodes_equal;
1309 op_be_Keep->ops.node_cmp_attr = be_nodes_equal;
1310 op_be_CopyKeep->ops.node_cmp_attr = be_nodes_equal;
1311 op_be_Call->ops.node_cmp_attr = Call_cmp_attr;
1312 op_be_Return->ops.node_cmp_attr = Return_cmp_attr;
1313 op_be_AddSP->ops.node_cmp_attr = be_nodes_equal;
1314 op_be_SubSP->ops.node_cmp_attr = be_nodes_equal;
1315 op_be_IncSP->ops.node_cmp_attr = IncSP_cmp_attr;
1316 op_be_Start->ops.node_cmp_attr = be_nodes_equal;
1317 op_be_FrameAddr->ops.node_cmp_attr = FrameAddr_cmp_attr;
1319 /* attach out dummy_ops to middle end nodes */
1320 for (opc = iro_First; opc <= iro_Last; ++opc) {
1321 ir_op *op = ir_get_opcode(opc);
1322 assert(op->ops.be_ops == NULL);
1323 op->ops.be_ops = &dummy_be_irn_ops;
1326 op_Phi->ops.be_ops = &phi_irn_ops;
1329 void be_finish_op(void)
1331 free_ir_op(op_be_Spill); op_be_Spill = NULL;
1332 free_ir_op(op_be_Reload); op_be_Reload = NULL;
1333 free_ir_op(op_be_Perm); op_be_Perm = NULL;
1334 free_ir_op(op_be_MemPerm); op_be_MemPerm = NULL;
1335 free_ir_op(op_be_Copy); op_be_Copy = NULL;
1336 free_ir_op(op_be_Keep); op_be_Keep = NULL;
1337 free_ir_op(op_be_CopyKeep); op_be_CopyKeep = NULL;
1338 free_ir_op(op_be_Call); op_be_Call = NULL;
1339 free_ir_op(op_be_Return); op_be_Return = NULL;
1340 free_ir_op(op_be_IncSP); op_be_IncSP = NULL;
1341 free_ir_op(op_be_AddSP); op_be_AddSP = NULL;
1342 free_ir_op(op_be_SubSP); op_be_SubSP = NULL;
1343 free_ir_op(op_be_Start); op_be_Start = NULL;
1344 free_ir_op(op_be_FrameAddr); op_be_FrameAddr = NULL;