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 This file implements the IR transformation from firm into
24 * @author Christian Wuerdig, Matthias Braun
35 #include "irgraph_t.h"
40 #include "iredges_t.h"
52 #include "../benode_t.h"
53 #include "../besched.h"
55 #include "../beutil.h"
56 #include "../beirg_t.h"
57 #include "../betranshlp.h"
60 #include "bearch_ia32_t.h"
61 #include "ia32_common_transform.h"
62 #include "ia32_nodes_attr.h"
63 #include "ia32_transform.h"
64 #include "ia32_new_nodes.h"
65 #include "ia32_map_regs.h"
66 #include "ia32_dbg_stat.h"
67 #include "ia32_optimize.h"
68 #include "ia32_util.h"
69 #include "ia32_address_mode.h"
70 #include "ia32_architecture.h"
72 #include "gen_ia32_regalloc_if.h"
74 #define SFP_SIGN "0x80000000"
75 #define DFP_SIGN "0x8000000000000000"
76 #define SFP_ABS "0x7FFFFFFF"
77 #define DFP_ABS "0x7FFFFFFFFFFFFFFF"
78 #define DFP_INTMAX "9223372036854775807"
80 #define TP_SFP_SIGN "ia32_sfp_sign"
81 #define TP_DFP_SIGN "ia32_dfp_sign"
82 #define TP_SFP_ABS "ia32_sfp_abs"
83 #define TP_DFP_ABS "ia32_dfp_abs"
84 #define TP_INT_MAX "ia32_int_max"
86 #define ENT_SFP_SIGN "IA32_SFP_SIGN"
87 #define ENT_DFP_SIGN "IA32_DFP_SIGN"
88 #define ENT_SFP_ABS "IA32_SFP_ABS"
89 #define ENT_DFP_ABS "IA32_DFP_ABS"
90 #define ENT_INT_MAX "IA32_INT_MAX"
92 #define mode_vfp (ia32_reg_classes[CLASS_ia32_vfp].mode)
93 #define mode_xmm (ia32_reg_classes[CLASS_ia32_xmm].mode)
95 DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL;)
97 static ir_node *initial_fpcw = NULL;
99 extern ir_op *get_op_Mulh(void);
101 typedef ir_node *construct_binop_func(dbg_info *db, ir_graph *irg,
102 ir_node *block, ir_node *base, ir_node *index, ir_node *mem,
103 ir_node *op1, ir_node *op2);
105 typedef ir_node *construct_binop_flags_func(dbg_info *db, ir_graph *irg,
106 ir_node *block, ir_node *base, ir_node *index, ir_node *mem,
107 ir_node *op1, ir_node *op2, ir_node *flags);
109 typedef ir_node *construct_shift_func(dbg_info *db, ir_graph *irg,
110 ir_node *block, ir_node *op1, ir_node *op2);
112 typedef ir_node *construct_binop_dest_func(dbg_info *db, ir_graph *irg,
113 ir_node *block, ir_node *base, ir_node *index, ir_node *mem,
116 typedef ir_node *construct_unop_dest_func(dbg_info *db, ir_graph *irg,
117 ir_node *block, ir_node *base, ir_node *index, ir_node *mem);
119 typedef ir_node *construct_binop_float_func(dbg_info *db, ir_graph *irg,
120 ir_node *block, ir_node *base, ir_node *index, ir_node *mem,
121 ir_node *op1, ir_node *op2, ir_node *fpcw);
123 typedef ir_node *construct_unop_func(dbg_info *db, ir_graph *irg,
124 ir_node *block, ir_node *op);
126 static ir_node *create_immediate_or_transform(ir_node *node,
127 char immediate_constraint_type);
129 static ir_node *create_I2I_Conv(ir_mode *src_mode, ir_mode *tgt_mode,
130 dbg_info *dbgi, ir_node *block,
131 ir_node *op, ir_node *orig_node);
133 /** Return non-zero is a node represents the 0 constant. */
134 static int is_Const_0(ir_node *node) {
135 return is_Const(node) && is_Const_null(node);
138 /** Return non-zero is a node represents the 1 constant. */
139 static int is_Const_1(ir_node *node) {
140 return is_Const(node) && is_Const_one(node);
143 /** Return non-zero is a node represents the -1 constant. */
144 static int is_Const_Minus_1(ir_node *node) {
145 return is_Const(node) && is_Const_all_one(node);
149 * returns true if constant can be created with a simple float command
151 static int is_simple_x87_Const(ir_node *node)
153 tarval *tv = get_Const_tarval(node);
154 if (tarval_is_null(tv) || tarval_is_one(tv))
157 /* TODO: match all the other float constants */
162 * returns true if constant can be created with a simple float command
164 static int is_simple_sse_Const(ir_node *node)
166 tarval *tv = get_Const_tarval(node);
167 ir_mode *mode = get_tarval_mode(tv);
172 if (tarval_is_null(tv) || tarval_is_one(tv))
175 if (mode == mode_D) {
176 unsigned val = get_tarval_sub_bits(tv, 0) |
177 (get_tarval_sub_bits(tv, 1) << 8) |
178 (get_tarval_sub_bits(tv, 2) << 16) |
179 (get_tarval_sub_bits(tv, 3) << 24);
181 /* lower 32bit are zero, really a 32bit constant */
185 /* TODO: match all the other float constants */
190 * Transforms a Const.
192 static ir_node *gen_Const(ir_node *node) {
193 ir_graph *irg = current_ir_graph;
194 ir_node *old_block = get_nodes_block(node);
195 ir_node *block = be_transform_node(old_block);
196 dbg_info *dbgi = get_irn_dbg_info(node);
197 ir_mode *mode = get_irn_mode(node);
199 assert(is_Const(node));
201 if (mode_is_float(mode)) {
203 ir_node *noreg = ia32_new_NoReg_gp(env_cg);
204 ir_node *nomem = new_NoMem();
208 if (ia32_cg_config.use_sse2) {
209 tarval *tv = get_Const_tarval(node);
210 if (tarval_is_null(tv)) {
211 load = new_rd_ia32_xZero(dbgi, irg, block);
212 set_ia32_ls_mode(load, mode);
214 } else if (tarval_is_one(tv)) {
215 int cnst = mode == mode_F ? 26 : 55;
216 ir_node *imm1 = create_Immediate(NULL, 0, cnst);
217 ir_node *imm2 = create_Immediate(NULL, 0, 2);
218 ir_node *pslld, *psrld;
220 load = new_rd_ia32_xAllOnes(dbgi, irg, block);
221 set_ia32_ls_mode(load, mode);
222 pslld = new_rd_ia32_xPslld(dbgi, irg, block, load, imm1);
223 set_ia32_ls_mode(pslld, mode);
224 psrld = new_rd_ia32_xPsrld(dbgi, irg, block, pslld, imm2);
225 set_ia32_ls_mode(psrld, mode);
227 } else if (mode == mode_F) {
228 /* we can place any 32bit constant by using a movd gp, sse */
229 unsigned val = get_tarval_sub_bits(tv, 0) |
230 (get_tarval_sub_bits(tv, 1) << 8) |
231 (get_tarval_sub_bits(tv, 2) << 16) |
232 (get_tarval_sub_bits(tv, 3) << 24);
233 ir_node *cnst = new_rd_ia32_Const(dbgi, irg, block, NULL, 0, val);
234 load = new_rd_ia32_xMovd(dbgi, irg, block, cnst);
235 set_ia32_ls_mode(load, mode);
238 if (mode == mode_D) {
239 unsigned val = get_tarval_sub_bits(tv, 0) |
240 (get_tarval_sub_bits(tv, 1) << 8) |
241 (get_tarval_sub_bits(tv, 2) << 16) |
242 (get_tarval_sub_bits(tv, 3) << 24);
244 ir_node *imm32 = create_Immediate(NULL, 0, 32);
245 ir_node *cnst, *psllq;
247 /* fine, lower 32bit are zero, produce 32bit value */
248 val = get_tarval_sub_bits(tv, 4) |
249 (get_tarval_sub_bits(tv, 5) << 8) |
250 (get_tarval_sub_bits(tv, 6) << 16) |
251 (get_tarval_sub_bits(tv, 7) << 24);
252 cnst = new_rd_ia32_Const(dbgi, irg, block, NULL, 0, val);
253 load = new_rd_ia32_xMovd(dbgi, irg, block, cnst);
254 set_ia32_ls_mode(load, mode);
255 psllq = new_rd_ia32_xPsllq(dbgi, irg, block, load, imm32);
256 set_ia32_ls_mode(psllq, mode);
261 floatent = create_float_const_entity(node);
263 load = new_rd_ia32_xLoad(dbgi, irg, block, noreg, noreg, nomem,
265 set_ia32_op_type(load, ia32_AddrModeS);
266 set_ia32_am_sc(load, floatent);
267 set_ia32_flags(load, get_ia32_flags(load) | arch_irn_flags_rematerializable);
268 res = new_r_Proj(irg, block, load, mode_xmm, pn_ia32_xLoad_res);
271 if (is_Const_null(node)) {
272 load = new_rd_ia32_vfldz(dbgi, irg, block);
274 set_ia32_ls_mode(load, mode);
275 } else if (is_Const_one(node)) {
276 load = new_rd_ia32_vfld1(dbgi, irg, block);
278 set_ia32_ls_mode(load, mode);
280 floatent = create_float_const_entity(node);
282 load = new_rd_ia32_vfld(dbgi, irg, block, noreg, noreg, nomem, mode);
283 set_ia32_op_type(load, ia32_AddrModeS);
284 set_ia32_am_sc(load, floatent);
285 set_ia32_flags(load, get_ia32_flags(load) | arch_irn_flags_rematerializable);
286 res = new_r_Proj(irg, block, load, mode_vfp, pn_ia32_vfld_res);
287 /* take the mode from the entity */
288 set_ia32_ls_mode(load, get_type_mode(get_entity_type(floatent)));
292 /* Const Nodes before the initial IncSP are a bad idea, because
293 * they could be spilled and we have no SP ready at that point yet.
294 * So add a dependency to the initial frame pointer calculation to
295 * avoid that situation.
297 if (get_irg_start_block(irg) == block) {
298 add_irn_dep(load, get_irg_frame(irg));
301 SET_IA32_ORIG_NODE(load, ia32_get_old_node_name(env_cg, node));
303 } else { /* non-float mode */
305 tarval *tv = get_Const_tarval(node);
308 tv = tarval_convert_to(tv, mode_Iu);
310 if (tv == get_tarval_bad() || tv == get_tarval_undefined() ||
312 panic("couldn't convert constant tarval (%+F)", node);
314 val = get_tarval_long(tv);
316 cnst = new_rd_ia32_Const(dbgi, irg, block, NULL, 0, val);
317 SET_IA32_ORIG_NODE(cnst, ia32_get_old_node_name(env_cg, node));
320 if (get_irg_start_block(irg) == block) {
321 add_irn_dep(cnst, get_irg_frame(irg));
329 * Transforms a SymConst.
331 static ir_node *gen_SymConst(ir_node *node) {
332 ir_graph *irg = current_ir_graph;
333 ir_node *old_block = get_nodes_block(node);
334 ir_node *block = be_transform_node(old_block);
335 dbg_info *dbgi = get_irn_dbg_info(node);
336 ir_mode *mode = get_irn_mode(node);
339 if (mode_is_float(mode)) {
340 ir_node *noreg = ia32_new_NoReg_gp(env_cg);
341 ir_node *nomem = new_NoMem();
343 if (ia32_cg_config.use_sse2)
344 cnst = new_rd_ia32_xLoad(dbgi, irg, block, noreg, noreg, nomem, mode_E);
346 cnst = new_rd_ia32_vfld(dbgi, irg, block, noreg, noreg, nomem, mode_E);
347 set_ia32_am_sc(cnst, get_SymConst_entity(node));
348 set_ia32_use_frame(cnst);
352 if(get_SymConst_kind(node) != symconst_addr_ent) {
353 panic("backend only support symconst_addr_ent (at %+F)", node);
355 entity = get_SymConst_entity(node);
356 cnst = new_rd_ia32_Const(dbgi, irg, block, entity, 0, 0);
359 /* Const Nodes before the initial IncSP are a bad idea, because
360 * they could be spilled and we have no SP ready at that point yet
362 if (get_irg_start_block(irg) == block) {
363 add_irn_dep(cnst, get_irg_frame(irg));
366 SET_IA32_ORIG_NODE(cnst, ia32_get_old_node_name(env_cg, node));
371 /* Generates an entity for a known FP const (used for FP Neg + Abs) */
372 ir_entity *ia32_gen_fp_known_const(ia32_known_const_t kct) {
373 static const struct {
375 const char *ent_name;
376 const char *cnst_str;
379 } names [ia32_known_const_max] = {
380 { TP_SFP_SIGN, ENT_SFP_SIGN, SFP_SIGN, 0, 16 }, /* ia32_SSIGN */
381 { TP_DFP_SIGN, ENT_DFP_SIGN, DFP_SIGN, 1, 16 }, /* ia32_DSIGN */
382 { TP_SFP_ABS, ENT_SFP_ABS, SFP_ABS, 0, 16 }, /* ia32_SABS */
383 { TP_DFP_ABS, ENT_DFP_ABS, DFP_ABS, 1, 16 }, /* ia32_DABS */
384 { TP_INT_MAX, ENT_INT_MAX, DFP_INTMAX, 2, 4 } /* ia32_INTMAX */
386 static ir_entity *ent_cache[ia32_known_const_max];
388 const char *tp_name, *ent_name, *cnst_str;
396 ent_name = names[kct].ent_name;
397 if (! ent_cache[kct]) {
398 tp_name = names[kct].tp_name;
399 cnst_str = names[kct].cnst_str;
401 switch (names[kct].mode) {
402 case 0: mode = mode_Iu; break;
403 case 1: mode = mode_Lu; break;
404 default: mode = mode_F; break;
406 tv = new_tarval_from_str(cnst_str, strlen(cnst_str), mode);
407 tp = new_type_primitive(new_id_from_str(tp_name), mode);
408 /* set the specified alignment */
409 set_type_alignment_bytes(tp, names[kct].align);
411 ent = new_entity(get_glob_type(), new_id_from_str(ent_name), tp);
413 set_entity_ld_ident(ent, get_entity_ident(ent));
414 set_entity_visibility(ent, visibility_local);
415 set_entity_variability(ent, variability_constant);
416 set_entity_allocation(ent, allocation_static);
418 /* we create a new entity here: It's initialization must resist on the
420 rem = current_ir_graph;
421 current_ir_graph = get_const_code_irg();
422 cnst = new_Const(mode, tv);
423 current_ir_graph = rem;
425 set_atomic_ent_value(ent, cnst);
427 /* cache the entry */
428 ent_cache[kct] = ent;
431 return ent_cache[kct];
434 static int prevents_AM(ir_node *const block, ir_node *const am_candidate,
435 ir_node *const other)
437 if (get_nodes_block(other) != block)
440 if (is_Sync(other)) {
443 for (i = get_Sync_n_preds(other) - 1; i >= 0; --i) {
444 ir_node *const pred = get_Sync_pred(other, i);
446 if (get_nodes_block(pred) != block)
449 /* Do not block ourselves from getting eaten */
450 if (is_Proj(pred) && get_Proj_pred(pred) == am_candidate)
453 if (!heights_reachable_in_block(heights, pred, am_candidate))
461 /* Do not block ourselves from getting eaten */
462 if (is_Proj(other) && get_Proj_pred(other) == am_candidate)
465 if (!heights_reachable_in_block(heights, other, am_candidate))
473 * return true if the node is a Proj(Load) and could be used in source address
474 * mode for another node. Will return only true if the @p other node is not
475 * dependent on the memory of the Load (for binary operations use the other
476 * input here, for unary operations use NULL).
478 static int ia32_use_source_address_mode(ir_node *block, ir_node *node,
479 ir_node *other, ir_node *other2, match_flags_t flags)
484 /* float constants are always available */
485 if (is_Const(node)) {
486 ir_mode *mode = get_irn_mode(node);
487 if (mode_is_float(mode)) {
488 if (ia32_cg_config.use_sse2) {
489 if (is_simple_sse_Const(node))
492 if (is_simple_x87_Const(node))
495 if (get_irn_n_edges(node) > 1)
503 load = get_Proj_pred(node);
504 pn = get_Proj_proj(node);
505 if (!is_Load(load) || pn != pn_Load_res)
507 if (get_nodes_block(load) != block)
509 /* we only use address mode if we're the only user of the load */
510 if (get_irn_n_edges(node) != (flags & match_two_users ? 2 : 1))
512 /* in some edge cases with address mode we might reach the load normally
513 * and through some AM sequence, if it is already materialized then we
514 * can't create an AM node from it */
515 if (be_is_transformed(node))
518 /* don't do AM if other node inputs depend on the load (via mem-proj) */
519 if (other != NULL && prevents_AM(block, load, other))
522 if (other2 != NULL && prevents_AM(block, load, other2))
528 typedef struct ia32_address_mode_t ia32_address_mode_t;
529 struct ia32_address_mode_t {
533 ia32_op_type_t op_type;
537 unsigned commutative : 1;
538 unsigned ins_permuted : 1;
541 static void build_address_ptr(ia32_address_t *addr, ir_node *ptr, ir_node *mem)
545 /* construct load address */
546 memset(addr, 0, sizeof(addr[0]));
547 ia32_create_address_mode(addr, ptr, /*force=*/0);
549 noreg_gp = ia32_new_NoReg_gp(env_cg);
550 addr->base = addr->base ? be_transform_node(addr->base) : noreg_gp;
551 addr->index = addr->index ? be_transform_node(addr->index) : noreg_gp;
552 addr->mem = be_transform_node(mem);
555 static void build_address(ia32_address_mode_t *am, ir_node *node)
557 ir_node *noreg_gp = ia32_new_NoReg_gp(env_cg);
558 ia32_address_t *addr = &am->addr;
564 if (is_Const(node)) {
565 ir_entity *entity = create_float_const_entity(node);
566 addr->base = noreg_gp;
567 addr->index = noreg_gp;
568 addr->mem = new_NoMem();
569 addr->symconst_ent = entity;
571 am->ls_mode = get_type_mode(get_entity_type(entity));
572 am->pinned = op_pin_state_floats;
576 load = get_Proj_pred(node);
577 ptr = get_Load_ptr(load);
578 mem = get_Load_mem(load);
579 new_mem = be_transform_node(mem);
580 am->pinned = get_irn_pinned(load);
581 am->ls_mode = get_Load_mode(load);
582 am->mem_proj = be_get_Proj_for_pn(load, pn_Load_M);
584 /* construct load address */
585 ia32_create_address_mode(addr, ptr, /*force=*/0);
587 addr->base = addr->base ? be_transform_node(addr->base) : noreg_gp;
588 addr->index = addr->index ? be_transform_node(addr->index) : noreg_gp;
592 static void set_address(ir_node *node, const ia32_address_t *addr)
594 set_ia32_am_scale(node, addr->scale);
595 set_ia32_am_sc(node, addr->symconst_ent);
596 set_ia32_am_offs_int(node, addr->offset);
597 if(addr->symconst_sign)
598 set_ia32_am_sc_sign(node);
600 set_ia32_use_frame(node);
601 set_ia32_frame_ent(node, addr->frame_entity);
605 * Apply attributes of a given address mode to a node.
607 static void set_am_attributes(ir_node *node, const ia32_address_mode_t *am)
609 set_address(node, &am->addr);
611 set_ia32_op_type(node, am->op_type);
612 set_ia32_ls_mode(node, am->ls_mode);
613 if (am->pinned == op_pin_state_pinned) {
614 /* beware: some nodes are already pinned and did not allow to change the state */
615 if (get_irn_pinned(node) != op_pin_state_pinned)
616 set_irn_pinned(node, op_pin_state_pinned);
619 set_ia32_commutative(node);
623 * Check, if a given node is a Down-Conv, ie. a integer Conv
624 * from a mode with a mode with more bits to a mode with lesser bits.
625 * Moreover, we return only true if the node has not more than 1 user.
627 * @param node the node
628 * @return non-zero if node is a Down-Conv
630 static int is_downconv(const ir_node *node)
638 /* we only want to skip the conv when we're the only user
639 * (not optimal but for now...)
641 if(get_irn_n_edges(node) > 1)
644 src_mode = get_irn_mode(get_Conv_op(node));
645 dest_mode = get_irn_mode(node);
646 return ia32_mode_needs_gp_reg(src_mode)
647 && ia32_mode_needs_gp_reg(dest_mode)
648 && get_mode_size_bits(dest_mode) < get_mode_size_bits(src_mode);
651 /* Skip all Down-Conv's on a given node and return the resulting node. */
652 ir_node *ia32_skip_downconv(ir_node *node) {
653 while (is_downconv(node))
654 node = get_Conv_op(node);
659 static ir_node *create_upconv(ir_node *node, ir_node *orig_node)
661 ir_mode *mode = get_irn_mode(node);
666 if(mode_is_signed(mode)) {
671 block = get_nodes_block(node);
672 dbgi = get_irn_dbg_info(node);
674 return create_I2I_Conv(mode, tgt_mode, dbgi, block, node, orig_node);
678 * matches operands of a node into ia32 addressing/operand modes. This covers
679 * usage of source address mode, immediates, operations with non 32-bit modes,
681 * The resulting data is filled into the @p am struct. block is the block
682 * of the node whose arguments are matched. op1, op2 are the first and second
683 * input that are matched (op1 may be NULL). other_op is another unrelated
684 * input that is not matched! but which is needed sometimes to check if AM
685 * for op1/op2 is legal.
686 * @p flags describes the supported modes of the operation in detail.
688 static void match_arguments(ia32_address_mode_t *am, ir_node *block,
689 ir_node *op1, ir_node *op2, ir_node *other_op,
692 ia32_address_t *addr = &am->addr;
693 ir_mode *mode = get_irn_mode(op2);
694 int mode_bits = get_mode_size_bits(mode);
695 ir_node *noreg_gp, *new_op1, *new_op2;
697 unsigned commutative;
698 int use_am_and_immediates;
701 memset(am, 0, sizeof(am[0]));
703 commutative = (flags & match_commutative) != 0;
704 use_am_and_immediates = (flags & match_am_and_immediates) != 0;
705 use_am = (flags & match_am) != 0;
706 use_immediate = (flags & match_immediate) != 0;
707 assert(!use_am_and_immediates || use_immediate);
710 assert(!commutative || op1 != NULL);
711 assert(use_am || !(flags & match_8bit_am));
712 assert(use_am || !(flags & match_16bit_am));
714 if (mode_bits == 8) {
715 if (!(flags & match_8bit_am))
717 /* we don't automatically add upconvs yet */
718 assert((flags & match_mode_neutral) || (flags & match_8bit));
719 } else if (mode_bits == 16) {
720 if (!(flags & match_16bit_am))
722 /* we don't automatically add upconvs yet */
723 assert((flags & match_mode_neutral) || (flags & match_16bit));
726 /* we can simply skip downconvs for mode neutral nodes: the upper bits
727 * can be random for these operations */
728 if (flags & match_mode_neutral) {
729 op2 = ia32_skip_downconv(op2);
731 op1 = ia32_skip_downconv(op1);
735 /* match immediates. firm nodes are normalized: constants are always on the
738 if (!(flags & match_try_am) && use_immediate) {
739 new_op2 = try_create_Immediate(op2, 0);
742 noreg_gp = ia32_new_NoReg_gp(env_cg);
743 if (new_op2 == NULL &&
744 use_am && ia32_use_source_address_mode(block, op2, op1, other_op, flags)) {
745 build_address(am, op2);
746 new_op1 = (op1 == NULL ? NULL : be_transform_node(op1));
747 if (mode_is_float(mode)) {
748 new_op2 = ia32_new_NoReg_vfp(env_cg);
752 am->op_type = ia32_AddrModeS;
753 } else if (commutative && (new_op2 == NULL || use_am_and_immediates) &&
755 ia32_use_source_address_mode(block, op1, op2, other_op, flags)) {
757 build_address(am, op1);
759 if (mode_is_float(mode)) {
760 noreg = ia32_new_NoReg_vfp(env_cg);
765 if (new_op2 != NULL) {
768 new_op1 = be_transform_node(op2);
770 am->ins_permuted = 1;
772 am->op_type = ia32_AddrModeS;
774 if (flags & match_try_am) {
777 am->op_type = ia32_Normal;
781 new_op1 = (op1 == NULL ? NULL : be_transform_node(op1));
783 new_op2 = be_transform_node(op2);
784 am->op_type = ia32_Normal;
785 am->ls_mode = get_irn_mode(op2);
786 if (flags & match_mode_neutral)
787 am->ls_mode = mode_Iu;
789 if (addr->base == NULL)
790 addr->base = noreg_gp;
791 if (addr->index == NULL)
792 addr->index = noreg_gp;
793 if (addr->mem == NULL)
794 addr->mem = new_NoMem();
796 am->new_op1 = new_op1;
797 am->new_op2 = new_op2;
798 am->commutative = commutative;
801 static ir_node *fix_mem_proj(ir_node *node, ia32_address_mode_t *am)
806 if (am->mem_proj == NULL)
809 /* we have to create a mode_T so the old MemProj can attach to us */
810 mode = get_irn_mode(node);
811 load = get_Proj_pred(am->mem_proj);
813 mark_irn_visited(load);
814 be_set_transformed_node(load, node);
816 if (mode != mode_T) {
817 set_irn_mode(node, mode_T);
818 return new_rd_Proj(NULL, current_ir_graph, get_nodes_block(node), node, mode, pn_ia32_res);
825 * Construct a standard binary operation, set AM and immediate if required.
827 * @param node The original node for which the binop is created
828 * @param op1 The first operand
829 * @param op2 The second operand
830 * @param func The node constructor function
831 * @return The constructed ia32 node.
833 static ir_node *gen_binop(ir_node *node, ir_node *op1, ir_node *op2,
834 construct_binop_func *func, match_flags_t flags)
837 ir_node *block, *new_block, *new_node;
838 ia32_address_mode_t am;
839 ia32_address_t *addr = &am.addr;
841 block = get_nodes_block(node);
842 match_arguments(&am, block, op1, op2, NULL, flags);
844 dbgi = get_irn_dbg_info(node);
845 new_block = be_transform_node(block);
846 new_node = func(dbgi, current_ir_graph, new_block,
847 addr->base, addr->index, addr->mem,
848 am.new_op1, am.new_op2);
849 set_am_attributes(new_node, &am);
850 /* we can't use source address mode anymore when using immediates */
851 if (is_ia32_Immediate(am.new_op1) || is_ia32_Immediate(am.new_op2))
852 set_ia32_am_support(new_node, ia32_am_None, ia32_am_arity_none);
853 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
855 new_node = fix_mem_proj(new_node, &am);
862 n_ia32_l_binop_right,
863 n_ia32_l_binop_eflags
865 COMPILETIME_ASSERT(n_ia32_l_binop_left == n_ia32_l_Adc_left, n_Adc_left)
866 COMPILETIME_ASSERT(n_ia32_l_binop_right == n_ia32_l_Adc_right, n_Adc_right)
867 COMPILETIME_ASSERT(n_ia32_l_binop_eflags == n_ia32_l_Adc_eflags, n_Adc_eflags)
868 COMPILETIME_ASSERT(n_ia32_l_binop_left == n_ia32_l_Sbb_minuend, n_Sbb_minuend)
869 COMPILETIME_ASSERT(n_ia32_l_binop_right == n_ia32_l_Sbb_subtrahend, n_Sbb_subtrahend)
870 COMPILETIME_ASSERT(n_ia32_l_binop_eflags == n_ia32_l_Sbb_eflags, n_Sbb_eflags)
873 * Construct a binary operation which also consumes the eflags.
875 * @param node The node to transform
876 * @param func The node constructor function
877 * @param flags The match flags
878 * @return The constructor ia32 node
880 static ir_node *gen_binop_flags(ir_node *node, construct_binop_flags_func *func,
883 ir_node *src_block = get_nodes_block(node);
884 ir_node *op1 = get_irn_n(node, n_ia32_l_binop_left);
885 ir_node *op2 = get_irn_n(node, n_ia32_l_binop_right);
887 ir_node *block, *new_node, *eflags, *new_eflags;
888 ia32_address_mode_t am;
889 ia32_address_t *addr = &am.addr;
891 match_arguments(&am, src_block, op1, op2, NULL, flags);
893 dbgi = get_irn_dbg_info(node);
894 block = be_transform_node(src_block);
895 eflags = get_irn_n(node, n_ia32_l_binop_eflags);
896 new_eflags = be_transform_node(eflags);
897 new_node = func(dbgi, current_ir_graph, block, addr->base, addr->index,
898 addr->mem, am.new_op1, am.new_op2, new_eflags);
899 set_am_attributes(new_node, &am);
900 /* we can't use source address mode anymore when using immediates */
901 if(is_ia32_Immediate(am.new_op1) || is_ia32_Immediate(am.new_op2))
902 set_ia32_am_support(new_node, ia32_am_None, ia32_am_arity_none);
903 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
905 new_node = fix_mem_proj(new_node, &am);
910 static ir_node *get_fpcw(void)
913 if (initial_fpcw != NULL)
916 fpcw = be_abi_get_ignore_irn(env_cg->birg->abi,
917 &ia32_fp_cw_regs[REG_FPCW]);
918 initial_fpcw = be_transform_node(fpcw);
924 * Construct a standard binary operation, set AM and immediate if required.
926 * @param op1 The first operand
927 * @param op2 The second operand
928 * @param func The node constructor function
929 * @return The constructed ia32 node.
931 static ir_node *gen_binop_x87_float(ir_node *node, ir_node *op1, ir_node *op2,
932 construct_binop_float_func *func,
935 ir_mode *mode = get_irn_mode(node);
937 ir_node *block, *new_block, *new_node;
938 ia32_address_mode_t am;
939 ia32_address_t *addr = &am.addr;
941 /* cannot use address mode with long double on x87 */
942 if (get_mode_size_bits(mode) > 64)
945 block = get_nodes_block(node);
946 match_arguments(&am, block, op1, op2, NULL, flags);
948 dbgi = get_irn_dbg_info(node);
949 new_block = be_transform_node(block);
950 new_node = func(dbgi, current_ir_graph, new_block,
951 addr->base, addr->index, addr->mem,
952 am.new_op1, am.new_op2, get_fpcw());
953 set_am_attributes(new_node, &am);
955 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
957 new_node = fix_mem_proj(new_node, &am);
963 * Construct a shift/rotate binary operation, sets AM and immediate if required.
965 * @param op1 The first operand
966 * @param op2 The second operand
967 * @param func The node constructor function
968 * @return The constructed ia32 node.
970 static ir_node *gen_shift_binop(ir_node *node, ir_node *op1, ir_node *op2,
971 construct_shift_func *func,
975 ir_node *block, *new_block, *new_op1, *new_op2, *new_node;
977 assert(! mode_is_float(get_irn_mode(node)));
978 assert(flags & match_immediate);
979 assert((flags & ~(match_mode_neutral | match_immediate)) == 0);
981 if (flags & match_mode_neutral) {
982 op1 = ia32_skip_downconv(op1);
983 new_op1 = be_transform_node(op1);
984 } else if (get_mode_size_bits(get_irn_mode(node)) != 32) {
985 new_op1 = create_upconv(op1, node);
987 new_op1 = be_transform_node(op1);
990 /* the shift amount can be any mode that is bigger than 5 bits, since all
991 * other bits are ignored anyway */
992 while (is_Conv(op2) && get_irn_n_edges(op2) == 1) {
993 ir_node *const op = get_Conv_op(op2);
994 if (mode_is_float(get_irn_mode(op)))
997 assert(get_mode_size_bits(get_irn_mode(op2)) >= 5);
999 new_op2 = create_immediate_or_transform(op2, 0);
1001 dbgi = get_irn_dbg_info(node);
1002 block = get_nodes_block(node);
1003 new_block = be_transform_node(block);
1004 new_node = func(dbgi, current_ir_graph, new_block, new_op1, new_op2);
1005 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
1007 /* lowered shift instruction may have a dependency operand, handle it here */
1008 if (get_irn_arity(node) == 3) {
1009 /* we have a dependency */
1010 ir_node *new_dep = be_transform_node(get_irn_n(node, 2));
1011 add_irn_dep(new_node, new_dep);
1019 * Construct a standard unary operation, set AM and immediate if required.
1021 * @param op The operand
1022 * @param func The node constructor function
1023 * @return The constructed ia32 node.
1025 static ir_node *gen_unop(ir_node *node, ir_node *op, construct_unop_func *func,
1026 match_flags_t flags)
1029 ir_node *block, *new_block, *new_op, *new_node;
1031 assert(flags == 0 || flags == match_mode_neutral);
1032 if (flags & match_mode_neutral) {
1033 op = ia32_skip_downconv(op);
1036 new_op = be_transform_node(op);
1037 dbgi = get_irn_dbg_info(node);
1038 block = get_nodes_block(node);
1039 new_block = be_transform_node(block);
1040 new_node = func(dbgi, current_ir_graph, new_block, new_op);
1042 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
1047 static ir_node *create_lea_from_address(dbg_info *dbgi, ir_node *block,
1048 ia32_address_t *addr)
1050 ir_node *base, *index, *res;
1054 base = ia32_new_NoReg_gp(env_cg);
1056 base = be_transform_node(base);
1059 index = addr->index;
1060 if (index == NULL) {
1061 index = ia32_new_NoReg_gp(env_cg);
1063 index = be_transform_node(index);
1066 res = new_rd_ia32_Lea(dbgi, current_ir_graph, block, base, index);
1067 set_address(res, addr);
1073 * Returns non-zero if a given address mode has a symbolic or
1074 * numerical offset != 0.
1076 static int am_has_immediates(const ia32_address_t *addr)
1078 return addr->offset != 0 || addr->symconst_ent != NULL
1079 || addr->frame_entity || addr->use_frame;
1083 * Creates an ia32 Add.
1085 * @return the created ia32 Add node
1087 static ir_node *gen_Add(ir_node *node) {
1088 ir_mode *mode = get_irn_mode(node);
1089 ir_node *op1 = get_Add_left(node);
1090 ir_node *op2 = get_Add_right(node);
1092 ir_node *block, *new_block, *new_node, *add_immediate_op;
1093 ia32_address_t addr;
1094 ia32_address_mode_t am;
1096 if (mode_is_float(mode)) {
1097 if (ia32_cg_config.use_sse2)
1098 return gen_binop(node, op1, op2, new_rd_ia32_xAdd,
1099 match_commutative | match_am);
1101 return gen_binop_x87_float(node, op1, op2, new_rd_ia32_vfadd,
1102 match_commutative | match_am);
1105 ia32_mark_non_am(node);
1107 op2 = ia32_skip_downconv(op2);
1108 op1 = ia32_skip_downconv(op1);
1112 * 0. Immediate Trees (example Add(Symconst, Const) -> Const)
1113 * 1. Add with immediate -> Lea
1114 * 2. Add with possible source address mode -> Add
1115 * 3. Otherwise -> Lea
1117 memset(&addr, 0, sizeof(addr));
1118 ia32_create_address_mode(&addr, node, /*force=*/1);
1119 add_immediate_op = NULL;
1121 dbgi = get_irn_dbg_info(node);
1122 block = get_nodes_block(node);
1123 new_block = be_transform_node(block);
1126 if(addr.base == NULL && addr.index == NULL) {
1127 ir_graph *irg = current_ir_graph;
1128 new_node = new_rd_ia32_Const(dbgi, irg, new_block, addr.symconst_ent,
1129 addr.symconst_sign, addr.offset);
1130 add_irn_dep(new_node, get_irg_frame(irg));
1131 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
1134 /* add with immediate? */
1135 if(addr.index == NULL) {
1136 add_immediate_op = addr.base;
1137 } else if(addr.base == NULL && addr.scale == 0) {
1138 add_immediate_op = addr.index;
1141 if(add_immediate_op != NULL) {
1142 if(!am_has_immediates(&addr)) {
1143 #ifdef DEBUG_libfirm
1144 ir_fprintf(stderr, "Optimisation warning Add x,0 (%+F) found\n",
1147 return be_transform_node(add_immediate_op);
1150 new_node = create_lea_from_address(dbgi, new_block, &addr);
1151 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
1155 /* test if we can use source address mode */
1156 match_arguments(&am, block, op1, op2, NULL, match_commutative
1157 | match_mode_neutral | match_am | match_immediate | match_try_am);
1159 /* construct an Add with source address mode */
1160 if (am.op_type == ia32_AddrModeS) {
1161 ir_graph *irg = current_ir_graph;
1162 ia32_address_t *am_addr = &am.addr;
1163 new_node = new_rd_ia32_Add(dbgi, irg, new_block, am_addr->base,
1164 am_addr->index, am_addr->mem, am.new_op1,
1166 set_am_attributes(new_node, &am);
1167 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
1169 new_node = fix_mem_proj(new_node, &am);
1174 /* otherwise construct a lea */
1175 new_node = create_lea_from_address(dbgi, new_block, &addr);
1176 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
1181 * Creates an ia32 Mul.
1183 * @return the created ia32 Mul node
1185 static ir_node *gen_Mul(ir_node *node) {
1186 ir_node *op1 = get_Mul_left(node);
1187 ir_node *op2 = get_Mul_right(node);
1188 ir_mode *mode = get_irn_mode(node);
1190 if (mode_is_float(mode)) {
1191 if (ia32_cg_config.use_sse2)
1192 return gen_binop(node, op1, op2, new_rd_ia32_xMul,
1193 match_commutative | match_am);
1195 return gen_binop_x87_float(node, op1, op2, new_rd_ia32_vfmul,
1196 match_commutative | match_am);
1198 return gen_binop(node, op1, op2, new_rd_ia32_IMul,
1199 match_commutative | match_am | match_mode_neutral |
1200 match_immediate | match_am_and_immediates);
1204 * Creates an ia32 Mulh.
1205 * Note: Mul produces a 64Bit result and Mulh returns the upper 32 bit of
1206 * this result while Mul returns the lower 32 bit.
1208 * @return the created ia32 Mulh node
1210 static ir_node *gen_Mulh(ir_node *node)
1212 ir_node *block = get_nodes_block(node);
1213 ir_node *new_block = be_transform_node(block);
1214 ir_graph *irg = current_ir_graph;
1215 dbg_info *dbgi = get_irn_dbg_info(node);
1216 ir_mode *mode = get_irn_mode(node);
1217 ir_node *op1 = get_Mulh_left(node);
1218 ir_node *op2 = get_Mulh_right(node);
1219 ir_node *proj_res_high;
1221 ia32_address_mode_t am;
1222 ia32_address_t *addr = &am.addr;
1224 assert(!mode_is_float(mode) && "Mulh with float not supported");
1225 assert(get_mode_size_bits(mode) == 32);
1227 match_arguments(&am, block, op1, op2, NULL, match_commutative | match_am);
1229 if (mode_is_signed(mode)) {
1230 new_node = new_rd_ia32_IMul1OP(dbgi, irg, new_block, addr->base,
1231 addr->index, addr->mem, am.new_op1,
1234 new_node = new_rd_ia32_Mul(dbgi, irg, new_block, addr->base,
1235 addr->index, addr->mem, am.new_op1,
1239 set_am_attributes(new_node, &am);
1240 /* we can't use source address mode anymore when using immediates */
1241 if(is_ia32_Immediate(am.new_op1) || is_ia32_Immediate(am.new_op2))
1242 set_ia32_am_support(new_node, ia32_am_None, ia32_am_arity_none);
1243 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
1245 assert(get_irn_mode(new_node) == mode_T);
1247 fix_mem_proj(new_node, &am);
1249 assert(pn_ia32_IMul1OP_res_high == pn_ia32_Mul_res_high);
1250 proj_res_high = new_rd_Proj(dbgi, irg, block, new_node,
1251 mode_Iu, pn_ia32_IMul1OP_res_high);
1253 return proj_res_high;
1259 * Creates an ia32 And.
1261 * @return The created ia32 And node
1263 static ir_node *gen_And(ir_node *node) {
1264 ir_node *op1 = get_And_left(node);
1265 ir_node *op2 = get_And_right(node);
1266 assert(! mode_is_float(get_irn_mode(node)));
1268 /* is it a zero extension? */
1269 if (is_Const(op2)) {
1270 tarval *tv = get_Const_tarval(op2);
1271 long v = get_tarval_long(tv);
1273 if (v == 0xFF || v == 0xFFFF) {
1274 dbg_info *dbgi = get_irn_dbg_info(node);
1275 ir_node *block = get_nodes_block(node);
1282 assert(v == 0xFFFF);
1285 res = create_I2I_Conv(src_mode, mode_Iu, dbgi, block, op1, node);
1290 return gen_binop(node, op1, op2, new_rd_ia32_And,
1291 match_commutative | match_mode_neutral | match_am
1298 * Creates an ia32 Or.
1300 * @return The created ia32 Or node
1302 static ir_node *gen_Or(ir_node *node) {
1303 ir_node *op1 = get_Or_left(node);
1304 ir_node *op2 = get_Or_right(node);
1306 assert (! mode_is_float(get_irn_mode(node)));
1307 return gen_binop(node, op1, op2, new_rd_ia32_Or, match_commutative
1308 | match_mode_neutral | match_am | match_immediate);
1314 * Creates an ia32 Eor.
1316 * @return The created ia32 Eor node
1318 static ir_node *gen_Eor(ir_node *node) {
1319 ir_node *op1 = get_Eor_left(node);
1320 ir_node *op2 = get_Eor_right(node);
1322 assert(! mode_is_float(get_irn_mode(node)));
1323 return gen_binop(node, op1, op2, new_rd_ia32_Xor, match_commutative
1324 | match_mode_neutral | match_am | match_immediate);
1329 * Creates an ia32 Sub.
1331 * @return The created ia32 Sub node
1333 static ir_node *gen_Sub(ir_node *node) {
1334 ir_node *op1 = get_Sub_left(node);
1335 ir_node *op2 = get_Sub_right(node);
1336 ir_mode *mode = get_irn_mode(node);
1338 if (mode_is_float(mode)) {
1339 if (ia32_cg_config.use_sse2)
1340 return gen_binop(node, op1, op2, new_rd_ia32_xSub, match_am);
1342 return gen_binop_x87_float(node, op1, op2, new_rd_ia32_vfsub,
1346 if (is_Const(op2)) {
1347 ir_fprintf(stderr, "Optimisation warning: found sub with const (%+F)\n",
1351 return gen_binop(node, op1, op2, new_rd_ia32_Sub, match_mode_neutral
1352 | match_am | match_immediate);
1355 static ir_node *transform_AM_mem(ir_graph *const irg, ir_node *const block,
1356 ir_node *const src_val,
1357 ir_node *const src_mem,
1358 ir_node *const am_mem)
1360 if (is_NoMem(am_mem)) {
1361 return be_transform_node(src_mem);
1362 } else if (is_Proj(src_val) &&
1364 get_Proj_pred(src_val) == get_Proj_pred(src_mem)) {
1365 /* avoid memory loop */
1367 } else if (is_Proj(src_val) && is_Sync(src_mem)) {
1368 ir_node *const ptr_pred = get_Proj_pred(src_val);
1369 int const arity = get_Sync_n_preds(src_mem);
1374 NEW_ARR_A(ir_node*, ins, arity + 1);
1376 for (i = arity - 1; i >= 0; --i) {
1377 ir_node *const pred = get_Sync_pred(src_mem, i);
1379 /* avoid memory loop */
1380 if (is_Proj(pred) && get_Proj_pred(pred) == ptr_pred)
1383 ins[n++] = be_transform_node(pred);
1388 return new_r_Sync(irg, block, n, ins);
1392 ins[0] = be_transform_node(src_mem);
1394 return new_r_Sync(irg, block, 2, ins);
1399 * Generates an ia32 DivMod with additional infrastructure for the
1400 * register allocator if needed.
1402 static ir_node *create_Div(ir_node *node)
1404 ir_graph *irg = current_ir_graph;
1405 dbg_info *dbgi = get_irn_dbg_info(node);
1406 ir_node *block = get_nodes_block(node);
1407 ir_node *new_block = be_transform_node(block);
1414 ir_node *sign_extension;
1415 ia32_address_mode_t am;
1416 ia32_address_t *addr = &am.addr;
1418 /* the upper bits have random contents for smaller modes */
1419 switch (get_irn_opcode(node)) {
1421 op1 = get_Div_left(node);
1422 op2 = get_Div_right(node);
1423 mem = get_Div_mem(node);
1424 mode = get_Div_resmode(node);
1427 op1 = get_Mod_left(node);
1428 op2 = get_Mod_right(node);
1429 mem = get_Mod_mem(node);
1430 mode = get_Mod_resmode(node);
1433 op1 = get_DivMod_left(node);
1434 op2 = get_DivMod_right(node);
1435 mem = get_DivMod_mem(node);
1436 mode = get_DivMod_resmode(node);
1439 panic("invalid divmod node %+F", node);
1442 match_arguments(&am, block, op1, op2, NULL, match_am);
1444 /* Beware: We don't need a Sync, if the memory predecessor of the Div node
1445 is the memory of the consumed address. We can have only the second op as address
1446 in Div nodes, so check only op2. */
1447 new_mem = transform_AM_mem(irg, block, op2, mem, addr->mem);
1449 if (mode_is_signed(mode)) {
1450 ir_node *produceval = new_rd_ia32_ProduceVal(dbgi, irg, new_block);
1451 add_irn_dep(produceval, get_irg_frame(irg));
1452 sign_extension = new_rd_ia32_Cltd(dbgi, irg, new_block, am.new_op1,
1455 new_node = new_rd_ia32_IDiv(dbgi, irg, new_block, addr->base,
1456 addr->index, new_mem, am.new_op2,
1457 am.new_op1, sign_extension);
1459 sign_extension = new_rd_ia32_Const(dbgi, irg, new_block, NULL, 0, 0);
1460 add_irn_dep(sign_extension, get_irg_frame(irg));
1462 new_node = new_rd_ia32_Div(dbgi, irg, new_block, addr->base,
1463 addr->index, new_mem, am.new_op2,
1464 am.new_op1, sign_extension);
1467 set_irn_pinned(new_node, get_irn_pinned(node));
1469 set_am_attributes(new_node, &am);
1470 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
1472 new_node = fix_mem_proj(new_node, &am);
1478 static ir_node *gen_Mod(ir_node *node) {
1479 return create_Div(node);
1482 static ir_node *gen_Div(ir_node *node) {
1483 return create_Div(node);
1486 static ir_node *gen_DivMod(ir_node *node) {
1487 return create_Div(node);
1493 * Creates an ia32 floating Div.
1495 * @return The created ia32 xDiv node
1497 static ir_node *gen_Quot(ir_node *node)
1499 ir_node *op1 = get_Quot_left(node);
1500 ir_node *op2 = get_Quot_right(node);
1502 if (ia32_cg_config.use_sse2) {
1503 return gen_binop(node, op1, op2, new_rd_ia32_xDiv, match_am);
1505 return gen_binop_x87_float(node, op1, op2, new_rd_ia32_vfdiv, match_am);
1511 * Creates an ia32 Shl.
1513 * @return The created ia32 Shl node
1515 static ir_node *gen_Shl(ir_node *node) {
1516 ir_node *left = get_Shl_left(node);
1517 ir_node *right = get_Shl_right(node);
1519 return gen_shift_binop(node, left, right, new_rd_ia32_Shl,
1520 match_mode_neutral | match_immediate);
1524 * Creates an ia32 Shr.
1526 * @return The created ia32 Shr node
1528 static ir_node *gen_Shr(ir_node *node) {
1529 ir_node *left = get_Shr_left(node);
1530 ir_node *right = get_Shr_right(node);
1532 return gen_shift_binop(node, left, right, new_rd_ia32_Shr, match_immediate);
1538 * Creates an ia32 Sar.
1540 * @return The created ia32 Shrs node
1542 static ir_node *gen_Shrs(ir_node *node) {
1543 ir_node *left = get_Shrs_left(node);
1544 ir_node *right = get_Shrs_right(node);
1545 ir_mode *mode = get_irn_mode(node);
1547 if(is_Const(right) && mode == mode_Is) {
1548 tarval *tv = get_Const_tarval(right);
1549 long val = get_tarval_long(tv);
1551 /* this is a sign extension */
1552 ir_graph *irg = current_ir_graph;
1553 dbg_info *dbgi = get_irn_dbg_info(node);
1554 ir_node *block = be_transform_node(get_nodes_block(node));
1556 ir_node *new_op = be_transform_node(op);
1557 ir_node *pval = new_rd_ia32_ProduceVal(dbgi, irg, block);
1558 add_irn_dep(pval, get_irg_frame(irg));
1560 return new_rd_ia32_Cltd(dbgi, irg, block, new_op, pval);
1564 /* 8 or 16 bit sign extension? */
1565 if(is_Const(right) && is_Shl(left) && mode == mode_Is) {
1566 ir_node *shl_left = get_Shl_left(left);
1567 ir_node *shl_right = get_Shl_right(left);
1568 if(is_Const(shl_right)) {
1569 tarval *tv1 = get_Const_tarval(right);
1570 tarval *tv2 = get_Const_tarval(shl_right);
1571 if(tv1 == tv2 && tarval_is_long(tv1)) {
1572 long val = get_tarval_long(tv1);
1573 if(val == 16 || val == 24) {
1574 dbg_info *dbgi = get_irn_dbg_info(node);
1575 ir_node *block = get_nodes_block(node);
1585 res = create_I2I_Conv(src_mode, mode_Is, dbgi, block,
1594 return gen_shift_binop(node, left, right, new_rd_ia32_Sar, match_immediate);
1600 * Creates an ia32 Rol.
1602 * @param op1 The first operator
1603 * @param op2 The second operator
1604 * @return The created ia32 RotL node
1606 static ir_node *gen_Rol(ir_node *node, ir_node *op1, ir_node *op2) {
1607 return gen_shift_binop(node, op1, op2, new_rd_ia32_Rol, match_immediate);
1613 * Creates an ia32 Ror.
1614 * NOTE: There is no RotR with immediate because this would always be a RotL
1615 * "imm-mode_size_bits" which can be pre-calculated.
1617 * @param op1 The first operator
1618 * @param op2 The second operator
1619 * @return The created ia32 RotR node
1621 static ir_node *gen_Ror(ir_node *node, ir_node *op1, ir_node *op2) {
1622 return gen_shift_binop(node, op1, op2, new_rd_ia32_Ror, match_immediate);
1628 * Creates an ia32 RotR or RotL (depending on the found pattern).
1630 * @return The created ia32 RotL or RotR node
1632 static ir_node *gen_Rotl(ir_node *node) {
1633 ir_node *rotate = NULL;
1634 ir_node *op1 = get_Rotl_left(node);
1635 ir_node *op2 = get_Rotl_right(node);
1637 /* Firm has only RotL, so we are looking for a right (op2)
1638 operand "-e+mode_size_bits" (it's an already modified "mode_size_bits-e",
1639 that means we can create a RotR instead of an Add and a RotL */
1643 ir_node *left = get_Add_left(add);
1644 ir_node *right = get_Add_right(add);
1645 if (is_Const(right)) {
1646 tarval *tv = get_Const_tarval(right);
1647 ir_mode *mode = get_irn_mode(node);
1648 long bits = get_mode_size_bits(mode);
1650 if (is_Minus(left) &&
1651 tarval_is_long(tv) &&
1652 get_tarval_long(tv) == bits &&
1655 DB((dbg, LEVEL_1, "RotL into RotR ... "));
1656 rotate = gen_Ror(node, op1, get_Minus_op(left));
1661 if (rotate == NULL) {
1662 rotate = gen_Rol(node, op1, op2);
1671 * Transforms a Minus node.
1673 * @return The created ia32 Minus node
1675 static ir_node *gen_Minus(ir_node *node)
1677 ir_node *op = get_Minus_op(node);
1678 ir_node *block = be_transform_node(get_nodes_block(node));
1679 ir_graph *irg = current_ir_graph;
1680 dbg_info *dbgi = get_irn_dbg_info(node);
1681 ir_mode *mode = get_irn_mode(node);
1686 if (mode_is_float(mode)) {
1687 ir_node *new_op = be_transform_node(op);
1688 if (ia32_cg_config.use_sse2) {
1689 /* TODO: non-optimal... if we have many xXors, then we should
1690 * rather create a load for the const and use that instead of
1691 * several AM nodes... */
1692 ir_node *noreg_gp = ia32_new_NoReg_gp(env_cg);
1693 ir_node *noreg_xmm = ia32_new_NoReg_xmm(env_cg);
1694 ir_node *nomem = new_rd_NoMem(irg);
1696 new_node = new_rd_ia32_xXor(dbgi, irg, block, noreg_gp, noreg_gp,
1697 nomem, new_op, noreg_xmm);
1699 size = get_mode_size_bits(mode);
1700 ent = ia32_gen_fp_known_const(size == 32 ? ia32_SSIGN : ia32_DSIGN);
1702 set_ia32_am_sc(new_node, ent);
1703 set_ia32_op_type(new_node, ia32_AddrModeS);
1704 set_ia32_ls_mode(new_node, mode);
1706 new_node = new_rd_ia32_vfchs(dbgi, irg, block, new_op);
1709 new_node = gen_unop(node, op, new_rd_ia32_Neg, match_mode_neutral);
1712 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
1718 * Transforms a Not node.
1720 * @return The created ia32 Not node
1722 static ir_node *gen_Not(ir_node *node) {
1723 ir_node *op = get_Not_op(node);
1725 assert(get_irn_mode(node) != mode_b); /* should be lowered already */
1726 assert (! mode_is_float(get_irn_mode(node)));
1728 return gen_unop(node, op, new_rd_ia32_Not, match_mode_neutral);
1734 * Transforms an Abs node.
1736 * @return The created ia32 Abs node
1738 static ir_node *gen_Abs(ir_node *node)
1740 ir_node *block = get_nodes_block(node);
1741 ir_node *new_block = be_transform_node(block);
1742 ir_node *op = get_Abs_op(node);
1743 ir_graph *irg = current_ir_graph;
1744 dbg_info *dbgi = get_irn_dbg_info(node);
1745 ir_mode *mode = get_irn_mode(node);
1746 ir_node *noreg_gp = ia32_new_NoReg_gp(env_cg);
1747 ir_node *nomem = new_NoMem();
1753 if (mode_is_float(mode)) {
1754 new_op = be_transform_node(op);
1756 if (ia32_cg_config.use_sse2) {
1757 ir_node *noreg_fp = ia32_new_NoReg_xmm(env_cg);
1758 new_node = new_rd_ia32_xAnd(dbgi,irg, new_block, noreg_gp, noreg_gp,
1759 nomem, new_op, noreg_fp);
1761 size = get_mode_size_bits(mode);
1762 ent = ia32_gen_fp_known_const(size == 32 ? ia32_SABS : ia32_DABS);
1764 set_ia32_am_sc(new_node, ent);
1766 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
1768 set_ia32_op_type(new_node, ia32_AddrModeS);
1769 set_ia32_ls_mode(new_node, mode);
1771 new_node = new_rd_ia32_vfabs(dbgi, irg, new_block, new_op);
1772 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
1775 ir_node *xor, *pval, *sign_extension;
1777 if (get_mode_size_bits(mode) == 32) {
1778 new_op = be_transform_node(op);
1780 new_op = create_I2I_Conv(mode, mode_Is, dbgi, block, op, node);
1783 pval = new_rd_ia32_ProduceVal(dbgi, irg, new_block);
1784 sign_extension = new_rd_ia32_Cltd(dbgi, irg, new_block,
1787 add_irn_dep(pval, get_irg_frame(irg));
1788 SET_IA32_ORIG_NODE(sign_extension,ia32_get_old_node_name(env_cg, node));
1790 xor = new_rd_ia32_Xor(dbgi, irg, new_block, noreg_gp, noreg_gp,
1791 nomem, new_op, sign_extension);
1792 SET_IA32_ORIG_NODE(xor, ia32_get_old_node_name(env_cg, node));
1794 new_node = new_rd_ia32_Sub(dbgi, irg, new_block, noreg_gp, noreg_gp,
1795 nomem, xor, sign_extension);
1796 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
1803 * Create a bt instruction for x & (1 << n) and place it into the block of cmp.
1805 static ir_node *gen_bt(ir_node *cmp, ir_node *x, ir_node *n) {
1806 dbg_info *dbgi = get_irn_dbg_info(cmp);
1807 ir_node *block = get_nodes_block(cmp);
1808 ir_node *new_block = be_transform_node(block);
1809 ir_node *op1 = be_transform_node(x);
1810 ir_node *op2 = be_transform_node(n);
1812 return new_rd_ia32_Bt(dbgi, current_ir_graph, new_block, op1, op2);
1816 * Transform a node returning a "flag" result.
1818 * @param node the node to transform
1819 * @param pnc_out the compare mode to use
1821 static ir_node *get_flags_node(ir_node *node, pn_Cmp *pnc_out)
1830 /* we have a Cmp as input */
1831 if (is_Proj(node)) {
1832 ir_node *pred = get_Proj_pred(node);
1834 pn_Cmp pnc = get_Proj_proj(node);
1835 if (ia32_cg_config.use_bt && (pnc == pn_Cmp_Lg || pnc == pn_Cmp_Eq)) {
1836 ir_node *l = get_Cmp_left(pred);
1837 ir_node *r = get_Cmp_right(pred);
1839 ir_node *la = get_And_left(l);
1840 ir_node *ra = get_And_right(l);
1842 ir_node *c = get_Shl_left(la);
1843 if (is_Const_1(c) && (is_Const_0(r) || r == la)) {
1844 /* (1 << n) & ra) */
1845 ir_node *n = get_Shl_right(la);
1846 flags = gen_bt(pred, ra, n);
1847 /* we must generate a Jc/Jnc jump */
1848 pnc = pnc == pn_Cmp_Lg ? pn_Cmp_Lt : pn_Cmp_Ge;
1851 *pnc_out = ia32_pn_Cmp_unsigned | pnc;
1856 ir_node *c = get_Shl_left(ra);
1857 if (is_Const_1(c) && (is_Const_0(r) || r == ra)) {
1858 /* la & (1 << n)) */
1859 ir_node *n = get_Shl_right(ra);
1860 flags = gen_bt(pred, la, n);
1861 /* we must generate a Jc/Jnc jump */
1862 pnc = pnc == pn_Cmp_Lg ? pn_Cmp_Lt : pn_Cmp_Ge;
1865 *pnc_out = ia32_pn_Cmp_unsigned | pnc;
1871 flags = be_transform_node(pred);
1877 /* a mode_b value, we have to compare it against 0 */
1878 dbgi = get_irn_dbg_info(node);
1879 new_block = be_transform_node(get_nodes_block(node));
1880 new_op = be_transform_node(node);
1881 noreg = ia32_new_NoReg_gp(env_cg);
1882 nomem = new_NoMem();
1883 flags = new_rd_ia32_Test(dbgi, current_ir_graph, new_block, noreg, noreg, nomem,
1884 new_op, new_op, /*is_permuted=*/0, /*cmp_unsigned=*/0);
1885 *pnc_out = pn_Cmp_Lg;
1890 * Transforms a Load.
1892 * @return the created ia32 Load node
1894 static ir_node *gen_Load(ir_node *node) {
1895 ir_node *old_block = get_nodes_block(node);
1896 ir_node *block = be_transform_node(old_block);
1897 ir_node *ptr = get_Load_ptr(node);
1898 ir_node *mem = get_Load_mem(node);
1899 ir_node *new_mem = be_transform_node(mem);
1902 ir_graph *irg = current_ir_graph;
1903 dbg_info *dbgi = get_irn_dbg_info(node);
1904 ir_node *noreg = ia32_new_NoReg_gp(env_cg);
1905 ir_mode *mode = get_Load_mode(node);
1908 ia32_address_t addr;
1910 /* construct load address */
1911 memset(&addr, 0, sizeof(addr));
1912 ia32_create_address_mode(&addr, ptr, /*force=*/0);
1919 base = be_transform_node(base);
1925 index = be_transform_node(index);
1928 if (mode_is_float(mode)) {
1929 if (ia32_cg_config.use_sse2) {
1930 new_node = new_rd_ia32_xLoad(dbgi, irg, block, base, index, new_mem,
1932 res_mode = mode_xmm;
1934 new_node = new_rd_ia32_vfld(dbgi, irg, block, base, index, new_mem,
1936 res_mode = mode_vfp;
1939 assert(mode != mode_b);
1941 /* create a conv node with address mode for smaller modes */
1942 if(get_mode_size_bits(mode) < 32) {
1943 new_node = new_rd_ia32_Conv_I2I(dbgi, irg, block, base, index,
1944 new_mem, noreg, mode);
1946 new_node = new_rd_ia32_Load(dbgi, irg, block, base, index, new_mem);
1951 set_irn_pinned(new_node, get_irn_pinned(node));
1952 set_ia32_op_type(new_node, ia32_AddrModeS);
1953 set_ia32_ls_mode(new_node, mode);
1954 set_address(new_node, &addr);
1956 if(get_irn_pinned(node) == op_pin_state_floats) {
1957 add_ia32_flags(new_node, arch_irn_flags_rematerializable);
1960 /* make sure we are scheduled behind the initial IncSP/Barrier
1961 * to avoid spills being placed before it
1963 if (block == get_irg_start_block(irg)) {
1964 add_irn_dep(new_node, get_irg_frame(irg));
1967 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
1972 static int use_dest_am(ir_node *block, ir_node *node, ir_node *mem,
1973 ir_node *ptr, ir_node *other)
1980 /* we only use address mode if we're the only user of the load */
1981 if (get_irn_n_edges(node) > 1)
1984 load = get_Proj_pred(node);
1987 if (get_nodes_block(load) != block)
1990 /* store should have the same pointer as the load */
1991 if (get_Load_ptr(load) != ptr)
1994 /* don't do AM if other node inputs depend on the load (via mem-proj) */
1995 if (other != NULL &&
1996 get_nodes_block(other) == block &&
1997 heights_reachable_in_block(heights, other, load)) {
2004 for (i = get_Sync_n_preds(mem) - 1; i >= 0; --i) {
2005 ir_node *const pred = get_Sync_pred(mem, i);
2007 if (is_Proj(pred) && get_Proj_pred(pred) == load)
2010 if (get_nodes_block(pred) == block &&
2011 heights_reachable_in_block(heights, pred, load)) {
2016 /* Store should be attached to the load */
2017 if (!is_Proj(mem) || get_Proj_pred(mem) != load)
2024 static void set_transformed_and_mark(ir_node *const old_node, ir_node *const new_node)
2026 mark_irn_visited(old_node);
2027 be_set_transformed_node(old_node, new_node);
2030 static ir_node *dest_am_binop(ir_node *node, ir_node *op1, ir_node *op2,
2031 ir_node *mem, ir_node *ptr, ir_mode *mode,
2032 construct_binop_dest_func *func,
2033 construct_binop_dest_func *func8bit,
2034 match_flags_t flags)
2036 ir_node *src_block = get_nodes_block(node);
2038 ir_node *noreg_gp = ia32_new_NoReg_gp(env_cg);
2039 ir_graph *irg = current_ir_graph;
2045 ia32_address_mode_t am;
2046 ia32_address_t *addr = &am.addr;
2047 memset(&am, 0, sizeof(am));
2049 assert(flags & match_dest_am);
2050 assert(flags & match_immediate); /* there is no destam node without... */
2051 commutative = (flags & match_commutative) != 0;
2053 if(use_dest_am(src_block, op1, mem, ptr, op2)) {
2054 build_address(&am, op1);
2055 new_op = create_immediate_or_transform(op2, 0);
2056 } else if(commutative && use_dest_am(src_block, op2, mem, ptr, op1)) {
2057 build_address(&am, op2);
2058 new_op = create_immediate_or_transform(op1, 0);
2063 if(addr->base == NULL)
2064 addr->base = noreg_gp;
2065 if(addr->index == NULL)
2066 addr->index = noreg_gp;
2067 if(addr->mem == NULL)
2068 addr->mem = new_NoMem();
2070 dbgi = get_irn_dbg_info(node);
2071 block = be_transform_node(src_block);
2072 if(get_mode_size_bits(mode) == 8) {
2073 new_node = func8bit(dbgi, irg, block, addr->base, addr->index,
2076 new_node = func(dbgi, irg, block, addr->base, addr->index, addr->mem,
2079 set_address(new_node, addr);
2080 set_ia32_op_type(new_node, ia32_AddrModeD);
2081 set_ia32_ls_mode(new_node, mode);
2082 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
2084 set_transformed_and_mark(get_Proj_pred(am.mem_proj), new_node);
2085 mem_proj = be_transform_node(am.mem_proj);
2086 set_transformed_and_mark(mem_proj ? mem_proj : am.mem_proj, new_node);
2091 static ir_node *dest_am_unop(ir_node *node, ir_node *op, ir_node *mem,
2092 ir_node *ptr, ir_mode *mode,
2093 construct_unop_dest_func *func)
2095 ir_graph *irg = current_ir_graph;
2096 ir_node *src_block = get_nodes_block(node);
2101 ia32_address_mode_t am;
2102 ia32_address_t *addr = &am.addr;
2103 memset(&am, 0, sizeof(am));
2105 if(!use_dest_am(src_block, op, mem, ptr, NULL))
2108 build_address(&am, op);
2110 dbgi = get_irn_dbg_info(node);
2111 block = be_transform_node(src_block);
2112 new_node = func(dbgi, irg, block, addr->base, addr->index, addr->mem);
2113 set_address(new_node, addr);
2114 set_ia32_op_type(new_node, ia32_AddrModeD);
2115 set_ia32_ls_mode(new_node, mode);
2116 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
2118 set_transformed_and_mark(get_Proj_pred(am.mem_proj), new_node);
2119 mem_proj = be_transform_node(am.mem_proj);
2120 set_transformed_and_mark(mem_proj ? mem_proj : am.mem_proj, new_node);
2125 static ir_node *try_create_SetMem(ir_node *node, ir_node *ptr, ir_node *mem) {
2126 ir_mode *mode = get_irn_mode(node);
2127 ir_node *mux_true = get_Mux_true(node);
2128 ir_node *mux_false = get_Mux_false(node);
2139 ia32_address_t addr;
2141 if(get_mode_size_bits(mode) != 8)
2144 if(is_Const_1(mux_true) && is_Const_0(mux_false)) {
2146 } else if(is_Const_0(mux_true) && is_Const_1(mux_false)) {
2152 build_address_ptr(&addr, ptr, mem);
2154 irg = current_ir_graph;
2155 dbgi = get_irn_dbg_info(node);
2156 block = get_nodes_block(node);
2157 new_block = be_transform_node(block);
2158 cond = get_Mux_sel(node);
2159 flags = get_flags_node(cond, &pnc);
2160 new_mem = be_transform_node(mem);
2161 new_node = new_rd_ia32_SetMem(dbgi, irg, new_block, addr.base,
2162 addr.index, addr.mem, flags, pnc, negated);
2163 set_address(new_node, &addr);
2164 set_ia32_op_type(new_node, ia32_AddrModeD);
2165 set_ia32_ls_mode(new_node, mode);
2166 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
2171 static ir_node *try_create_dest_am(ir_node *node) {
2172 ir_node *val = get_Store_value(node);
2173 ir_node *mem = get_Store_mem(node);
2174 ir_node *ptr = get_Store_ptr(node);
2175 ir_mode *mode = get_irn_mode(val);
2176 unsigned bits = get_mode_size_bits(mode);
2181 /* handle only GP modes for now... */
2182 if(!ia32_mode_needs_gp_reg(mode))
2186 /* store must be the only user of the val node */
2187 if(get_irn_n_edges(val) > 1)
2189 /* skip pointless convs */
2191 ir_node *conv_op = get_Conv_op(val);
2192 ir_mode *pred_mode = get_irn_mode(conv_op);
2193 if(pred_mode == mode_b || bits <= get_mode_size_bits(pred_mode)) {
2201 /* value must be in the same block */
2202 if(get_nodes_block(node) != get_nodes_block(val))
2205 switch (get_irn_opcode(val)) {
2207 op1 = get_Add_left(val);
2208 op2 = get_Add_right(val);
2209 if(is_Const_1(op2)) {
2210 new_node = dest_am_unop(val, op1, mem, ptr, mode,
2211 new_rd_ia32_IncMem);
2213 } else if(is_Const_Minus_1(op2)) {
2214 new_node = dest_am_unop(val, op1, mem, ptr, mode,
2215 new_rd_ia32_DecMem);
2218 new_node = dest_am_binop(val, op1, op2, mem, ptr, mode,
2219 new_rd_ia32_AddMem, new_rd_ia32_AddMem8Bit,
2220 match_dest_am | match_commutative |
2224 op1 = get_Sub_left(val);
2225 op2 = get_Sub_right(val);
2227 ir_fprintf(stderr, "Optimisation warning: not-normalized sub ,C found\n");
2229 new_node = dest_am_binop(val, op1, op2, mem, ptr, mode,
2230 new_rd_ia32_SubMem, new_rd_ia32_SubMem8Bit,
2231 match_dest_am | match_immediate |
2235 op1 = get_And_left(val);
2236 op2 = get_And_right(val);
2237 new_node = dest_am_binop(val, op1, op2, mem, ptr, mode,
2238 new_rd_ia32_AndMem, new_rd_ia32_AndMem8Bit,
2239 match_dest_am | match_commutative |
2243 op1 = get_Or_left(val);
2244 op2 = get_Or_right(val);
2245 new_node = dest_am_binop(val, op1, op2, mem, ptr, mode,
2246 new_rd_ia32_OrMem, new_rd_ia32_OrMem8Bit,
2247 match_dest_am | match_commutative |
2251 op1 = get_Eor_left(val);
2252 op2 = get_Eor_right(val);
2253 new_node = dest_am_binop(val, op1, op2, mem, ptr, mode,
2254 new_rd_ia32_XorMem, new_rd_ia32_XorMem8Bit,
2255 match_dest_am | match_commutative |
2259 op1 = get_Shl_left(val);
2260 op2 = get_Shl_right(val);
2261 new_node = dest_am_binop(val, op1, op2, mem, ptr, mode,
2262 new_rd_ia32_ShlMem, new_rd_ia32_ShlMem,
2263 match_dest_am | match_immediate);
2266 op1 = get_Shr_left(val);
2267 op2 = get_Shr_right(val);
2268 new_node = dest_am_binop(val, op1, op2, mem, ptr, mode,
2269 new_rd_ia32_ShrMem, new_rd_ia32_ShrMem,
2270 match_dest_am | match_immediate);
2273 op1 = get_Shrs_left(val);
2274 op2 = get_Shrs_right(val);
2275 new_node = dest_am_binop(val, op1, op2, mem, ptr, mode,
2276 new_rd_ia32_SarMem, new_rd_ia32_SarMem,
2277 match_dest_am | match_immediate);
2280 op1 = get_Rotl_left(val);
2281 op2 = get_Rotl_right(val);
2282 new_node = dest_am_binop(val, op1, op2, mem, ptr, mode,
2283 new_rd_ia32_RolMem, new_rd_ia32_RolMem,
2284 match_dest_am | match_immediate);
2286 /* TODO: match ROR patterns... */
2288 new_node = try_create_SetMem(val, ptr, mem);
2291 op1 = get_Minus_op(val);
2292 new_node = dest_am_unop(val, op1, mem, ptr, mode, new_rd_ia32_NegMem);
2295 /* should be lowered already */
2296 assert(mode != mode_b);
2297 op1 = get_Not_op(val);
2298 new_node = dest_am_unop(val, op1, mem, ptr, mode, new_rd_ia32_NotMem);
2304 if(new_node != NULL) {
2305 if(get_irn_pinned(new_node) != op_pin_state_pinned &&
2306 get_irn_pinned(node) == op_pin_state_pinned) {
2307 set_irn_pinned(new_node, op_pin_state_pinned);
2314 static int is_float_to_int32_conv(const ir_node *node)
2316 ir_mode *mode = get_irn_mode(node);
2320 if(get_mode_size_bits(mode) != 32 || !ia32_mode_needs_gp_reg(mode))
2322 /* don't report unsigned as conv to 32bit, because we really need to do
2323 * a vfist with 64bit signed in this case */
2324 if(!mode_is_signed(mode))
2329 conv_op = get_Conv_op(node);
2330 conv_mode = get_irn_mode(conv_op);
2332 if(!mode_is_float(conv_mode))
2339 * Transform a Store(floatConst).
2341 * @return the created ia32 Store node
2343 static ir_node *gen_float_const_Store(ir_node *node, ir_node *cns)
2345 ir_mode *mode = get_irn_mode(cns);
2346 unsigned size = get_mode_size_bytes(mode);
2347 tarval *tv = get_Const_tarval(cns);
2348 ir_node *block = get_nodes_block(node);
2349 ir_node *new_block = be_transform_node(block);
2350 ir_node *ptr = get_Store_ptr(node);
2351 ir_node *mem = get_Store_mem(node);
2352 ir_graph *irg = current_ir_graph;
2353 dbg_info *dbgi = get_irn_dbg_info(node);
2357 ia32_address_t addr;
2359 assert(size % 4 == 0);
2362 build_address_ptr(&addr, ptr, mem);
2366 get_tarval_sub_bits(tv, ofs) |
2367 (get_tarval_sub_bits(tv, ofs + 1) << 8) |
2368 (get_tarval_sub_bits(tv, ofs + 2) << 16) |
2369 (get_tarval_sub_bits(tv, ofs + 3) << 24);
2370 ir_node *imm = create_Immediate(NULL, 0, val);
2372 ir_node *new_node = new_rd_ia32_Store(dbgi, irg, new_block, addr.base,
2373 addr.index, addr.mem, imm);
2375 set_irn_pinned(new_node, get_irn_pinned(node));
2376 set_ia32_op_type(new_node, ia32_AddrModeD);
2377 set_ia32_ls_mode(new_node, mode_Iu);
2378 set_address(new_node, &addr);
2379 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
2381 ins[i++] = new_node;
2386 } while (size != 0);
2388 return i == 1 ? ins[0] : new_rd_Sync(dbgi, irg, new_block, i, ins);
2392 * Generate a vfist or vfisttp instruction.
2394 static ir_node *gen_vfist(dbg_info *dbgi, ir_graph *irg, ir_node *block, ir_node *base, ir_node *index,
2395 ir_node *mem, ir_node *val, ir_node **fist)
2399 if (ia32_cg_config.use_fisttp) {
2400 /* Note: fisttp ALWAYS pop the tos. We have to ensure here that the value is copied
2401 if other users exists */
2402 const arch_register_class_t *reg_class = &ia32_reg_classes[CLASS_ia32_vfp];
2403 ir_node *vfisttp = new_rd_ia32_vfisttp(dbgi, irg, block, base, index, mem, val);
2404 ir_node *value = new_r_Proj(irg, block, vfisttp, mode_E, pn_ia32_vfisttp_res);
2405 be_new_Keep(reg_class, irg, block, 1, &value);
2407 new_node = new_r_Proj(irg, block, vfisttp, mode_M, pn_ia32_vfisttp_M);
2410 ir_node *trunc_mode = ia32_new_Fpu_truncate(env_cg);
2413 new_node = new_rd_ia32_vfist(dbgi, irg, block, base, index, mem, val, trunc_mode);
2419 * Transforms a normal Store.
2421 * @return the created ia32 Store node
2423 static ir_node *gen_normal_Store(ir_node *node)
2425 ir_node *val = get_Store_value(node);
2426 ir_mode *mode = get_irn_mode(val);
2427 ir_node *block = get_nodes_block(node);
2428 ir_node *new_block = be_transform_node(block);
2429 ir_node *ptr = get_Store_ptr(node);
2430 ir_node *mem = get_Store_mem(node);
2431 ir_graph *irg = current_ir_graph;
2432 dbg_info *dbgi = get_irn_dbg_info(node);
2433 ir_node *noreg = ia32_new_NoReg_gp(env_cg);
2434 ir_node *new_val, *new_node, *store;
2435 ia32_address_t addr;
2437 /* check for destination address mode */
2438 new_node = try_create_dest_am(node);
2439 if (new_node != NULL)
2442 /* construct store address */
2443 memset(&addr, 0, sizeof(addr));
2444 ia32_create_address_mode(&addr, ptr, /*force=*/0);
2446 if (addr.base == NULL) {
2449 addr.base = be_transform_node(addr.base);
2452 if (addr.index == NULL) {
2455 addr.index = be_transform_node(addr.index);
2457 addr.mem = be_transform_node(mem);
2459 if (mode_is_float(mode)) {
2460 /* Convs (and strict-Convs) before stores are unnecessary if the mode
2462 while (is_Conv(val) && mode == get_irn_mode(val)) {
2463 ir_node *op = get_Conv_op(val);
2464 if (!mode_is_float(get_irn_mode(op)))
2468 new_val = be_transform_node(val);
2469 if (ia32_cg_config.use_sse2) {
2470 new_node = new_rd_ia32_xStore(dbgi, irg, new_block, addr.base,
2471 addr.index, addr.mem, new_val);
2473 new_node = new_rd_ia32_vfst(dbgi, irg, new_block, addr.base,
2474 addr.index, addr.mem, new_val, mode);
2477 } else if (!ia32_cg_config.use_sse2 && is_float_to_int32_conv(val)) {
2478 val = get_Conv_op(val);
2480 /* TODO: is this optimisation still necessary at all (middleend)? */
2481 /* We can skip ALL float->float up-Convs (and strict-up-Convs) before stores. */
2482 while (is_Conv(val)) {
2483 ir_node *op = get_Conv_op(val);
2484 if (!mode_is_float(get_irn_mode(op)))
2486 if (get_mode_size_bits(get_irn_mode(op)) > get_mode_size_bits(get_irn_mode(val)))
2490 new_val = be_transform_node(val);
2491 new_node = gen_vfist(dbgi, irg, new_block, addr.base, addr.index, addr.mem, new_val, &store);
2493 new_val = create_immediate_or_transform(val, 0);
2494 assert(mode != mode_b);
2496 if (get_mode_size_bits(mode) == 8) {
2497 new_node = new_rd_ia32_Store8Bit(dbgi, irg, new_block, addr.base,
2498 addr.index, addr.mem, new_val);
2500 new_node = new_rd_ia32_Store(dbgi, irg, new_block, addr.base,
2501 addr.index, addr.mem, new_val);
2506 set_irn_pinned(store, get_irn_pinned(node));
2507 set_ia32_op_type(store, ia32_AddrModeD);
2508 set_ia32_ls_mode(store, mode);
2510 set_address(store, &addr);
2511 SET_IA32_ORIG_NODE(store, ia32_get_old_node_name(env_cg, node));
2517 * Transforms a Store.
2519 * @return the created ia32 Store node
2521 static ir_node *gen_Store(ir_node *node)
2523 ir_node *val = get_Store_value(node);
2524 ir_mode *mode = get_irn_mode(val);
2526 if (mode_is_float(mode) && is_Const(val)) {
2529 /* we are storing a floating point constant */
2530 if (ia32_cg_config.use_sse2) {
2531 transform = !is_simple_sse_Const(val);
2533 transform = !is_simple_x87_Const(val);
2536 return gen_float_const_Store(node, val);
2538 return gen_normal_Store(node);
2542 * Transforms a Switch.
2544 * @return the created ia32 SwitchJmp node
2546 static ir_node *create_Switch(ir_node *node)
2548 ir_graph *irg = current_ir_graph;
2549 dbg_info *dbgi = get_irn_dbg_info(node);
2550 ir_node *block = be_transform_node(get_nodes_block(node));
2551 ir_node *sel = get_Cond_selector(node);
2552 ir_node *new_sel = be_transform_node(sel);
2553 int switch_min = INT_MAX;
2554 int switch_max = INT_MIN;
2555 long default_pn = get_Cond_defaultProj(node);
2557 const ir_edge_t *edge;
2559 assert(get_mode_size_bits(get_irn_mode(sel)) == 32);
2561 /* determine the smallest switch case value */
2562 foreach_out_edge(node, edge) {
2563 ir_node *proj = get_edge_src_irn(edge);
2564 long pn = get_Proj_proj(proj);
2565 if(pn == default_pn)
2574 if((unsigned) (switch_max - switch_min) > 256000) {
2575 panic("Size of switch %+F bigger than 256000", node);
2578 if (switch_min != 0) {
2579 ir_node *noreg = ia32_new_NoReg_gp(env_cg);
2581 /* if smallest switch case is not 0 we need an additional sub */
2582 new_sel = new_rd_ia32_Lea(dbgi, irg, block, new_sel, noreg);
2583 add_ia32_am_offs_int(new_sel, -switch_min);
2584 set_ia32_op_type(new_sel, ia32_AddrModeS);
2586 SET_IA32_ORIG_NODE(new_sel, ia32_get_old_node_name(env_cg, node));
2589 new_node = new_rd_ia32_SwitchJmp(dbgi, irg, block, new_sel, default_pn);
2590 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
2596 * Transform a Cond node.
2598 static ir_node *gen_Cond(ir_node *node) {
2599 ir_node *block = get_nodes_block(node);
2600 ir_node *new_block = be_transform_node(block);
2601 ir_graph *irg = current_ir_graph;
2602 dbg_info *dbgi = get_irn_dbg_info(node);
2603 ir_node *sel = get_Cond_selector(node);
2604 ir_mode *sel_mode = get_irn_mode(sel);
2605 ir_node *flags = NULL;
2609 if (sel_mode != mode_b) {
2610 return create_Switch(node);
2613 /* we get flags from a Cmp */
2614 flags = get_flags_node(sel, &pnc);
2616 new_node = new_rd_ia32_Jcc(dbgi, irg, new_block, flags, pnc);
2617 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
2622 static ir_node *gen_be_Copy(ir_node *node)
2624 ir_node *new_node = be_duplicate_node(node);
2625 ir_mode *mode = get_irn_mode(new_node);
2627 if (ia32_mode_needs_gp_reg(mode)) {
2628 set_irn_mode(new_node, mode_Iu);
2634 static ir_node *create_Fucom(ir_node *node)
2636 ir_graph *irg = current_ir_graph;
2637 dbg_info *dbgi = get_irn_dbg_info(node);
2638 ir_node *block = get_nodes_block(node);
2639 ir_node *new_block = be_transform_node(block);
2640 ir_node *left = get_Cmp_left(node);
2641 ir_node *new_left = be_transform_node(left);
2642 ir_node *right = get_Cmp_right(node);
2646 if(ia32_cg_config.use_fucomi) {
2647 new_right = be_transform_node(right);
2648 new_node = new_rd_ia32_vFucomi(dbgi, irg, new_block, new_left,
2650 set_ia32_commutative(new_node);
2651 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
2653 if(ia32_cg_config.use_ftst && is_Const_0(right)) {
2654 new_node = new_rd_ia32_vFtstFnstsw(dbgi, irg, new_block, new_left,
2657 new_right = be_transform_node(right);
2658 new_node = new_rd_ia32_vFucomFnstsw(dbgi, irg, new_block, new_left,
2662 set_ia32_commutative(new_node);
2664 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
2666 new_node = new_rd_ia32_Sahf(dbgi, irg, new_block, new_node);
2667 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
2673 static ir_node *create_Ucomi(ir_node *node)
2675 ir_graph *irg = current_ir_graph;
2676 dbg_info *dbgi = get_irn_dbg_info(node);
2677 ir_node *src_block = get_nodes_block(node);
2678 ir_node *new_block = be_transform_node(src_block);
2679 ir_node *left = get_Cmp_left(node);
2680 ir_node *right = get_Cmp_right(node);
2682 ia32_address_mode_t am;
2683 ia32_address_t *addr = &am.addr;
2685 match_arguments(&am, src_block, left, right, NULL,
2686 match_commutative | match_am);
2688 new_node = new_rd_ia32_Ucomi(dbgi, irg, new_block, addr->base, addr->index,
2689 addr->mem, am.new_op1, am.new_op2,
2691 set_am_attributes(new_node, &am);
2693 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
2695 new_node = fix_mem_proj(new_node, &am);
2701 * helper function: checks wether all Cmp projs are Lg or Eq which is needed
2702 * to fold an and into a test node
2704 static int can_fold_test_and(ir_node *node)
2706 const ir_edge_t *edge;
2708 /** we can only have eq and lg projs */
2709 foreach_out_edge(node, edge) {
2710 ir_node *proj = get_edge_src_irn(edge);
2711 pn_Cmp pnc = get_Proj_proj(proj);
2712 if(pnc != pn_Cmp_Eq && pnc != pn_Cmp_Lg)
2720 * Generate code for a Cmp.
2722 static ir_node *gen_Cmp(ir_node *node)
2724 ir_graph *irg = current_ir_graph;
2725 dbg_info *dbgi = get_irn_dbg_info(node);
2726 ir_node *block = get_nodes_block(node);
2727 ir_node *new_block = be_transform_node(block);
2728 ir_node *left = get_Cmp_left(node);
2729 ir_node *right = get_Cmp_right(node);
2730 ir_mode *cmp_mode = get_irn_mode(left);
2732 ia32_address_mode_t am;
2733 ia32_address_t *addr = &am.addr;
2736 if(mode_is_float(cmp_mode)) {
2737 if (ia32_cg_config.use_sse2) {
2738 return create_Ucomi(node);
2740 return create_Fucom(node);
2744 assert(ia32_mode_needs_gp_reg(cmp_mode));
2746 /* Prefer the Test instruction, when encountering (x & y) ==/!= 0 */
2747 cmp_unsigned = !mode_is_signed(cmp_mode);
2748 if (is_Const_0(right) &&
2750 get_irn_n_edges(left) == 1 &&
2751 can_fold_test_and(node)) {
2752 /* Test(and_left, and_right) */
2753 ir_node *and_left = get_And_left(left);
2754 ir_node *and_right = get_And_right(left);
2755 ir_mode *mode = get_irn_mode(and_left);
2757 match_arguments(&am, block, and_left, and_right, NULL,
2759 match_am | match_8bit_am | match_16bit_am |
2760 match_am_and_immediates | match_immediate |
2761 match_8bit | match_16bit);
2762 if (get_mode_size_bits(mode) == 8) {
2763 new_node = new_rd_ia32_Test8Bit(dbgi, irg, new_block, addr->base,
2764 addr->index, addr->mem, am.new_op1,
2765 am.new_op2, am.ins_permuted,
2768 new_node = new_rd_ia32_Test(dbgi, irg, new_block, addr->base,
2769 addr->index, addr->mem, am.new_op1,
2770 am.new_op2, am.ins_permuted, cmp_unsigned);
2773 /* Cmp(left, right) */
2774 match_arguments(&am, block, left, right, NULL,
2775 match_commutative | match_am | match_8bit_am |
2776 match_16bit_am | match_am_and_immediates |
2777 match_immediate | match_8bit | match_16bit);
2778 if (get_mode_size_bits(cmp_mode) == 8) {
2779 new_node = new_rd_ia32_Cmp8Bit(dbgi, irg, new_block, addr->base,
2780 addr->index, addr->mem, am.new_op1,
2781 am.new_op2, am.ins_permuted,
2784 new_node = new_rd_ia32_Cmp(dbgi, irg, new_block, addr->base,
2785 addr->index, addr->mem, am.new_op1,
2786 am.new_op2, am.ins_permuted, cmp_unsigned);
2789 set_am_attributes(new_node, &am);
2790 set_ia32_ls_mode(new_node, cmp_mode);
2792 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
2794 new_node = fix_mem_proj(new_node, &am);
2799 static ir_node *create_CMov(ir_node *node, ir_node *flags, ir_node *new_flags,
2802 ir_graph *irg = current_ir_graph;
2803 dbg_info *dbgi = get_irn_dbg_info(node);
2804 ir_node *block = get_nodes_block(node);
2805 ir_node *new_block = be_transform_node(block);
2806 ir_node *val_true = get_Mux_true(node);
2807 ir_node *val_false = get_Mux_false(node);
2809 match_flags_t match_flags;
2810 ia32_address_mode_t am;
2811 ia32_address_t *addr;
2813 assert(ia32_cg_config.use_cmov);
2814 assert(ia32_mode_needs_gp_reg(get_irn_mode(val_true)));
2818 match_flags = match_commutative | match_am | match_16bit_am |
2821 match_arguments(&am, block, val_false, val_true, flags, match_flags);
2823 new_node = new_rd_ia32_CMov(dbgi, irg, new_block, addr->base, addr->index,
2824 addr->mem, am.new_op1, am.new_op2, new_flags,
2825 am.ins_permuted, pnc);
2826 set_am_attributes(new_node, &am);
2828 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
2830 new_node = fix_mem_proj(new_node, &am);
2836 * Creates a ia32 Setcc instruction.
2838 static ir_node *create_set_32bit(dbg_info *dbgi, ir_node *new_block,
2839 ir_node *flags, pn_Cmp pnc, ir_node *orig_node,
2842 ir_graph *irg = current_ir_graph;
2843 ir_node *noreg = ia32_new_NoReg_gp(env_cg);
2844 ir_node *nomem = new_NoMem();
2845 ir_mode *mode = get_irn_mode(orig_node);
2848 new_node = new_rd_ia32_Set(dbgi, irg, new_block, flags, pnc, ins_permuted);
2849 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, orig_node));
2851 /* we might need to conv the result up */
2852 if (get_mode_size_bits(mode) > 8) {
2853 new_node = new_rd_ia32_Conv_I2I8Bit(dbgi, irg, new_block, noreg, noreg,
2854 nomem, new_node, mode_Bu);
2855 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, orig_node));
2862 * Create instruction for an unsigned Difference or Zero.
2864 static ir_node *create_Doz(ir_node *psi, ir_node *a, ir_node *b) {
2865 ir_graph *irg = current_ir_graph;
2866 ir_mode *mode = get_irn_mode(psi);
2867 ir_node *new_node, *sub, *sbb, *eflags, *block, *noreg, *tmpreg, *nomem;
2870 new_node = gen_binop(psi, a, b, new_rd_ia32_Sub,
2871 match_mode_neutral | match_am | match_immediate | match_two_users);
2873 block = get_nodes_block(new_node);
2875 if (is_Proj(new_node)) {
2876 sub = get_Proj_pred(new_node);
2877 assert(is_ia32_Sub(sub));
2880 set_irn_mode(sub, mode_T);
2881 new_node = new_rd_Proj(NULL, irg, block, sub, mode, pn_ia32_res);
2883 eflags = new_rd_Proj(NULL, irg, block, sub, mode_Iu, pn_ia32_Sub_flags);
2885 dbgi = get_irn_dbg_info(psi);
2886 noreg = ia32_new_NoReg_gp(env_cg);
2887 tmpreg = new_rd_ia32_ProduceVal(dbgi, irg, block);
2888 nomem = new_NoMem();
2889 sbb = new_rd_ia32_Sbb(dbgi, irg, block, noreg, noreg, nomem, tmpreg, tmpreg, eflags);
2891 new_node = new_rd_ia32_And(dbgi, irg, block, noreg, noreg, nomem, new_node, sbb);
2892 set_ia32_commutative(new_node);
2897 * Transforms a Mux node into CMov.
2899 * @return The transformed node.
2901 static ir_node *gen_Mux(ir_node *node)
2903 dbg_info *dbgi = get_irn_dbg_info(node);
2904 ir_node *block = get_nodes_block(node);
2905 ir_node *new_block = be_transform_node(block);
2906 ir_node *mux_true = get_Mux_true(node);
2907 ir_node *mux_false = get_Mux_false(node);
2908 ir_node *cond = get_Mux_sel(node);
2909 ir_mode *mode = get_irn_mode(node);
2912 assert(get_irn_mode(cond) == mode_b);
2914 /* Note: a Mux node uses a Load two times IFF it's used in the compare AND in the result */
2915 if (mode_is_float(mode)) {
2916 ir_node *cmp = get_Proj_pred(cond);
2917 ir_node *cmp_left = get_Cmp_left(cmp);
2918 ir_node *cmp_right = get_Cmp_right(cmp);
2919 pn_Cmp pnc = get_Proj_proj(cond);
2921 if (ia32_cg_config.use_sse2) {
2922 if (pnc == pn_Cmp_Lt || pnc == pn_Cmp_Le) {
2923 if (cmp_left == mux_true && cmp_right == mux_false) {
2924 /* Mux(a <= b, a, b) => MIN */
2925 return gen_binop(node, cmp_left, cmp_right, new_rd_ia32_xMin,
2926 match_commutative | match_am | match_two_users);
2927 } else if (cmp_left == mux_false && cmp_right == mux_true) {
2928 /* Mux(a <= b, b, a) => MAX */
2929 return gen_binop(node, cmp_left, cmp_right, new_rd_ia32_xMax,
2930 match_commutative | match_am | match_two_users);
2932 } else if (pnc == pn_Cmp_Gt || pnc == pn_Cmp_Ge) {
2933 if (cmp_left == mux_true && cmp_right == mux_false) {
2934 /* Mux(a >= b, a, b) => MAX */
2935 return gen_binop(node, cmp_left, cmp_right, new_rd_ia32_xMax,
2936 match_commutative | match_am | match_two_users);
2937 } else if (cmp_left == mux_false && cmp_right == mux_true) {
2938 /* Mux(a >= b, b, a) => MIN */
2939 return gen_binop(node, cmp_left, cmp_right, new_rd_ia32_xMin,
2940 match_commutative | match_am | match_two_users);
2944 panic("cannot transform floating point Mux");
2950 assert(ia32_mode_needs_gp_reg(mode));
2952 if (is_Proj(cond)) {
2953 ir_node *cmp = get_Proj_pred(cond);
2955 ir_node *cmp_left = get_Cmp_left(cmp);
2956 ir_node *cmp_right = get_Cmp_right(cmp);
2957 pn_Cmp pnc = get_Proj_proj(cond);
2959 /* check for unsigned Doz first */
2960 if ((pnc & pn_Cmp_Gt) && !mode_is_signed(mode) &&
2961 is_Const_0(mux_false) && is_Sub(mux_true) &&
2962 get_Sub_left(mux_true) == cmp_left && get_Sub_right(mux_true) == cmp_right) {
2963 /* Mux(a >=u b, a - b, 0) unsigned Doz */
2964 return create_Doz(node, cmp_left, cmp_right);
2965 } else if ((pnc & pn_Cmp_Lt) && !mode_is_signed(mode) &&
2966 is_Const_0(mux_true) && is_Sub(mux_false) &&
2967 get_Sub_left(mux_false) == cmp_left && get_Sub_right(mux_false) == cmp_right) {
2968 /* Mux(a <=u b, 0, a - b) unsigned Doz */
2969 return create_Doz(node, cmp_left, cmp_right);
2974 flags = get_flags_node(cond, &pnc);
2976 if (is_Const(mux_true) && is_Const(mux_false)) {
2977 /* both are const, good */
2978 if (is_Const_1(mux_true) && is_Const_0(mux_false)) {
2979 new_node = create_set_32bit(dbgi, new_block, flags, pnc, node, /*is_premuted=*/0);
2980 } else if (is_Const_0(mux_true) && is_Const_1(mux_false)) {
2981 new_node = create_set_32bit(dbgi, new_block, flags, pnc, node, /*is_premuted=*/1);
2983 /* Not that simple. */
2988 new_node = create_CMov(node, cond, flags, pnc);
2996 * Create a conversion from x87 state register to general purpose.
2998 static ir_node *gen_x87_fp_to_gp(ir_node *node) {
2999 ir_node *block = be_transform_node(get_nodes_block(node));
3000 ir_node *op = get_Conv_op(node);
3001 ir_node *new_op = be_transform_node(op);
3002 ia32_code_gen_t *cg = env_cg;
3003 ir_graph *irg = current_ir_graph;
3004 dbg_info *dbgi = get_irn_dbg_info(node);
3005 ir_node *noreg = ia32_new_NoReg_gp(cg);
3006 ir_mode *mode = get_irn_mode(node);
3007 ir_node *fist, *load, *mem;
3009 mem = gen_vfist(dbgi, irg, block, get_irg_frame(irg), noreg, new_NoMem(), new_op, &fist);
3010 set_irn_pinned(fist, op_pin_state_floats);
3011 set_ia32_use_frame(fist);
3012 set_ia32_op_type(fist, ia32_AddrModeD);
3014 assert(get_mode_size_bits(mode) <= 32);
3015 /* exception we can only store signed 32 bit integers, so for unsigned
3016 we store a 64bit (signed) integer and load the lower bits */
3017 if(get_mode_size_bits(mode) == 32 && !mode_is_signed(mode)) {
3018 set_ia32_ls_mode(fist, mode_Ls);
3020 set_ia32_ls_mode(fist, mode_Is);
3022 SET_IA32_ORIG_NODE(fist, ia32_get_old_node_name(cg, node));
3025 load = new_rd_ia32_Load(dbgi, irg, block, get_irg_frame(irg), noreg, mem);
3027 set_irn_pinned(load, op_pin_state_floats);
3028 set_ia32_use_frame(load);
3029 set_ia32_op_type(load, ia32_AddrModeS);
3030 set_ia32_ls_mode(load, mode_Is);
3031 if(get_ia32_ls_mode(fist) == mode_Ls) {
3032 ia32_attr_t *attr = get_ia32_attr(load);
3033 attr->data.need_64bit_stackent = 1;
3035 ia32_attr_t *attr = get_ia32_attr(load);
3036 attr->data.need_32bit_stackent = 1;
3038 SET_IA32_ORIG_NODE(load, ia32_get_old_node_name(cg, node));
3040 return new_r_Proj(irg, block, load, mode_Iu, pn_ia32_Load_res);
3044 * Creates a x87 strict Conv by placing a Store and a Load
3046 static ir_node *gen_x87_strict_conv(ir_mode *tgt_mode, ir_node *node)
3048 ir_node *block = get_nodes_block(node);
3049 ir_graph *irg = current_ir_graph;
3050 dbg_info *dbgi = get_irn_dbg_info(node);
3051 ir_node *noreg = ia32_new_NoReg_gp(env_cg);
3052 ir_node *nomem = new_NoMem();
3053 ir_node *frame = get_irg_frame(irg);
3054 ir_node *store, *load;
3057 store = new_rd_ia32_vfst(dbgi, irg, block, frame, noreg, nomem, node,
3059 set_ia32_use_frame(store);
3060 set_ia32_op_type(store, ia32_AddrModeD);
3061 SET_IA32_ORIG_NODE(store, ia32_get_old_node_name(env_cg, node));
3063 load = new_rd_ia32_vfld(dbgi, irg, block, frame, noreg, store,
3065 set_ia32_use_frame(load);
3066 set_ia32_op_type(load, ia32_AddrModeS);
3067 SET_IA32_ORIG_NODE(load, ia32_get_old_node_name(env_cg, node));
3069 new_node = new_r_Proj(irg, block, load, mode_E, pn_ia32_vfld_res);
3074 * Create a conversion from general purpose to x87 register
3076 static ir_node *gen_x87_gp_to_fp(ir_node *node, ir_mode *src_mode) {
3077 ir_node *src_block = get_nodes_block(node);
3078 ir_node *block = be_transform_node(src_block);
3079 ir_graph *irg = current_ir_graph;
3080 dbg_info *dbgi = get_irn_dbg_info(node);
3081 ir_node *op = get_Conv_op(node);
3082 ir_node *new_op = NULL;
3086 ir_mode *store_mode;
3092 /* fild can use source AM if the operand is a signed 32bit integer */
3093 if (src_mode == mode_Is) {
3094 ia32_address_mode_t am;
3096 match_arguments(&am, src_block, NULL, op, NULL,
3097 match_am | match_try_am);
3098 if (am.op_type == ia32_AddrModeS) {
3099 ia32_address_t *addr = &am.addr;
3101 fild = new_rd_ia32_vfild(dbgi, irg, block, addr->base,
3102 addr->index, addr->mem);
3103 new_node = new_r_Proj(irg, block, fild, mode_vfp,
3106 set_am_attributes(fild, &am);
3107 SET_IA32_ORIG_NODE(fild, ia32_get_old_node_name(env_cg, node));
3109 fix_mem_proj(fild, &am);
3114 if(new_op == NULL) {
3115 new_op = be_transform_node(op);
3118 noreg = ia32_new_NoReg_gp(env_cg);
3119 nomem = new_NoMem();
3120 mode = get_irn_mode(op);
3122 /* first convert to 32 bit signed if necessary */
3123 src_bits = get_mode_size_bits(src_mode);
3124 if (src_bits == 8) {
3125 new_op = new_rd_ia32_Conv_I2I8Bit(dbgi, irg, block, noreg, noreg, nomem,
3127 SET_IA32_ORIG_NODE(new_op, ia32_get_old_node_name(env_cg, node));
3129 } else if (src_bits < 32) {
3130 new_op = new_rd_ia32_Conv_I2I(dbgi, irg, block, noreg, noreg, nomem,
3132 SET_IA32_ORIG_NODE(new_op, ia32_get_old_node_name(env_cg, node));
3136 assert(get_mode_size_bits(mode) == 32);
3139 store = new_rd_ia32_Store(dbgi, irg, block, get_irg_frame(irg), noreg, nomem,
3142 set_ia32_use_frame(store);
3143 set_ia32_op_type(store, ia32_AddrModeD);
3144 set_ia32_ls_mode(store, mode_Iu);
3146 /* exception for 32bit unsigned, do a 64bit spill+load */
3147 if(!mode_is_signed(mode)) {
3150 ir_node *zero_const = create_Immediate(NULL, 0, 0);
3152 ir_node *zero_store = new_rd_ia32_Store(dbgi, irg, block,
3153 get_irg_frame(irg), noreg, nomem,
3156 set_ia32_use_frame(zero_store);
3157 set_ia32_op_type(zero_store, ia32_AddrModeD);
3158 add_ia32_am_offs_int(zero_store, 4);
3159 set_ia32_ls_mode(zero_store, mode_Iu);
3164 store = new_rd_Sync(dbgi, irg, block, 2, in);
3165 store_mode = mode_Ls;
3167 store_mode = mode_Is;
3171 fild = new_rd_ia32_vfild(dbgi, irg, block, get_irg_frame(irg), noreg, store);
3173 set_ia32_use_frame(fild);
3174 set_ia32_op_type(fild, ia32_AddrModeS);
3175 set_ia32_ls_mode(fild, store_mode);
3177 new_node = new_r_Proj(irg, block, fild, mode_vfp, pn_ia32_vfild_res);
3183 * Create a conversion from one integer mode into another one
3185 static ir_node *create_I2I_Conv(ir_mode *src_mode, ir_mode *tgt_mode,
3186 dbg_info *dbgi, ir_node *block, ir_node *op,
3189 ir_graph *irg = current_ir_graph;
3190 int src_bits = get_mode_size_bits(src_mode);
3191 int tgt_bits = get_mode_size_bits(tgt_mode);
3192 ir_node *new_block = be_transform_node(block);
3194 ir_mode *smaller_mode;
3196 ia32_address_mode_t am;
3197 ia32_address_t *addr = &am.addr;
3200 if (src_bits < tgt_bits) {
3201 smaller_mode = src_mode;
3202 smaller_bits = src_bits;
3204 smaller_mode = tgt_mode;
3205 smaller_bits = tgt_bits;
3208 #ifdef DEBUG_libfirm
3210 ir_fprintf(stderr, "Optimisation warning: conv after constant %+F\n",
3215 match_arguments(&am, block, NULL, op, NULL,
3216 match_8bit | match_16bit |
3217 match_am | match_8bit_am | match_16bit_am);
3218 if (smaller_bits == 8) {
3219 new_node = new_rd_ia32_Conv_I2I8Bit(dbgi, irg, new_block, addr->base,
3220 addr->index, addr->mem, am.new_op2,
3223 new_node = new_rd_ia32_Conv_I2I(dbgi, irg, new_block, addr->base,
3224 addr->index, addr->mem, am.new_op2,
3227 set_am_attributes(new_node, &am);
3228 /* match_arguments assume that out-mode = in-mode, this isn't true here
3230 set_ia32_ls_mode(new_node, smaller_mode);
3231 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
3232 new_node = fix_mem_proj(new_node, &am);
3237 * Transforms a Conv node.
3239 * @return The created ia32 Conv node
3241 static ir_node *gen_Conv(ir_node *node) {
3242 ir_node *block = get_nodes_block(node);
3243 ir_node *new_block = be_transform_node(block);
3244 ir_node *op = get_Conv_op(node);
3245 ir_node *new_op = NULL;
3246 ir_graph *irg = current_ir_graph;
3247 dbg_info *dbgi = get_irn_dbg_info(node);
3248 ir_mode *src_mode = get_irn_mode(op);
3249 ir_mode *tgt_mode = get_irn_mode(node);
3250 int src_bits = get_mode_size_bits(src_mode);
3251 int tgt_bits = get_mode_size_bits(tgt_mode);
3252 ir_node *noreg = ia32_new_NoReg_gp(env_cg);
3253 ir_node *nomem = new_rd_NoMem(irg);
3254 ir_node *res = NULL;
3256 if (src_mode == mode_b) {
3257 assert(mode_is_int(tgt_mode) || mode_is_reference(tgt_mode));
3258 /* nothing to do, we already model bools as 0/1 ints */
3259 return be_transform_node(op);
3262 if (src_mode == tgt_mode) {
3263 if (get_Conv_strict(node)) {
3264 if (ia32_cg_config.use_sse2) {
3265 /* when we are in SSE mode, we can kill all strict no-op conversion */
3266 return be_transform_node(op);
3269 /* this should be optimized already, but who knows... */
3270 DEBUG_ONLY(ir_fprintf(stderr, "Debug warning: conv %+F is pointless\n", node));
3271 DB((dbg, LEVEL_1, "killed Conv(mode, mode) ..."));
3272 return be_transform_node(op);
3276 if (mode_is_float(src_mode)) {
3277 new_op = be_transform_node(op);
3278 /* we convert from float ... */
3279 if (mode_is_float(tgt_mode)) {
3280 if(src_mode == mode_E && tgt_mode == mode_D
3281 && !get_Conv_strict(node)) {
3282 DB((dbg, LEVEL_1, "killed Conv(mode, mode) ..."));
3287 if (ia32_cg_config.use_sse2) {
3288 DB((dbg, LEVEL_1, "create Conv(float, float) ..."));
3289 res = new_rd_ia32_Conv_FP2FP(dbgi, irg, new_block, noreg, noreg,
3291 set_ia32_ls_mode(res, tgt_mode);
3293 if(get_Conv_strict(node)) {
3294 res = gen_x87_strict_conv(tgt_mode, new_op);
3295 SET_IA32_ORIG_NODE(get_Proj_pred(res), ia32_get_old_node_name(env_cg, node));
3298 DB((dbg, LEVEL_1, "killed Conv(float, float) ..."));
3303 DB((dbg, LEVEL_1, "create Conv(float, int) ..."));
3304 if (ia32_cg_config.use_sse2) {
3305 res = new_rd_ia32_Conv_FP2I(dbgi, irg, new_block, noreg, noreg,
3307 set_ia32_ls_mode(res, src_mode);
3309 return gen_x87_fp_to_gp(node);
3313 /* we convert from int ... */
3314 if (mode_is_float(tgt_mode)) {
3316 DB((dbg, LEVEL_1, "create Conv(int, float) ..."));
3317 if (ia32_cg_config.use_sse2) {
3318 new_op = be_transform_node(op);
3319 res = new_rd_ia32_Conv_I2FP(dbgi, irg, new_block, noreg, noreg,
3321 set_ia32_ls_mode(res, tgt_mode);
3323 res = gen_x87_gp_to_fp(node, src_mode);
3324 if(get_Conv_strict(node)) {
3325 /* The strict-Conv is only necessary, if the int mode has more bits
3326 * than the float mantissa */
3327 size_t int_mantissa = get_mode_size_bits(src_mode) - (mode_is_signed(src_mode) ? 1 : 0);
3328 size_t float_mantissa;
3329 /* FIXME There is no way to get the mantissa size of a mode */
3330 switch (get_mode_size_bits(tgt_mode)) {
3331 case 32: float_mantissa = 23 + 1; break; // + 1 for implicit 1
3332 case 64: float_mantissa = 52 + 1; break;
3333 case 80: float_mantissa = 64 + 1; break;
3334 default: float_mantissa = 0; break;
3336 if (float_mantissa < int_mantissa) {
3337 res = gen_x87_strict_conv(tgt_mode, res);
3338 SET_IA32_ORIG_NODE(get_Proj_pred(res), ia32_get_old_node_name(env_cg, node));
3343 } else if(tgt_mode == mode_b) {
3344 /* mode_b lowering already took care that we only have 0/1 values */
3345 DB((dbg, LEVEL_1, "omitting unnecessary Conv(%+F, %+F) ...",
3346 src_mode, tgt_mode));
3347 return be_transform_node(op);
3350 if (src_bits == tgt_bits) {
3351 DB((dbg, LEVEL_1, "omitting unnecessary Conv(%+F, %+F) ...",
3352 src_mode, tgt_mode));
3353 return be_transform_node(op);
3356 res = create_I2I_Conv(src_mode, tgt_mode, dbgi, block, op, node);
3364 static ir_node *create_immediate_or_transform(ir_node *node,
3365 char immediate_constraint_type)
3367 ir_node *new_node = try_create_Immediate(node, immediate_constraint_type);
3368 if (new_node == NULL) {
3369 new_node = be_transform_node(node);
3375 * Transforms a FrameAddr into an ia32 Add.
3377 static ir_node *gen_be_FrameAddr(ir_node *node) {
3378 ir_node *block = be_transform_node(get_nodes_block(node));
3379 ir_node *op = be_get_FrameAddr_frame(node);
3380 ir_node *new_op = be_transform_node(op);
3381 ir_graph *irg = current_ir_graph;
3382 dbg_info *dbgi = get_irn_dbg_info(node);
3383 ir_node *noreg = ia32_new_NoReg_gp(env_cg);
3386 new_node = new_rd_ia32_Lea(dbgi, irg, block, new_op, noreg);
3387 set_ia32_frame_ent(new_node, arch_get_frame_entity(env_cg->arch_env, node));
3388 set_ia32_use_frame(new_node);
3390 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
3396 * In case SSE is used we need to copy the result from XMM0 to FPU TOS before return.
3398 static ir_node *gen_be_Return(ir_node *node) {
3399 ir_graph *irg = current_ir_graph;
3400 ir_node *ret_val = get_irn_n(node, be_pos_Return_val);
3401 ir_node *ret_mem = get_irn_n(node, be_pos_Return_mem);
3402 ir_entity *ent = get_irg_entity(irg);
3403 ir_type *tp = get_entity_type(ent);
3408 ir_node *frame, *sse_store, *fld, *mproj, *barrier;
3409 ir_node *new_barrier, *new_ret_val, *new_ret_mem;
3412 int pn_ret_val, pn_ret_mem, arity, i;
3414 assert(ret_val != NULL);
3415 if (be_Return_get_n_rets(node) < 1 || ! ia32_cg_config.use_sse2) {
3416 return be_duplicate_node(node);
3419 res_type = get_method_res_type(tp, 0);
3421 if (! is_Primitive_type(res_type)) {
3422 return be_duplicate_node(node);
3425 mode = get_type_mode(res_type);
3426 if (! mode_is_float(mode)) {
3427 return be_duplicate_node(node);
3430 assert(get_method_n_ress(tp) == 1);
3432 pn_ret_val = get_Proj_proj(ret_val);
3433 pn_ret_mem = get_Proj_proj(ret_mem);
3435 /* get the Barrier */
3436 barrier = get_Proj_pred(ret_val);
3438 /* get result input of the Barrier */
3439 ret_val = get_irn_n(barrier, pn_ret_val);
3440 new_ret_val = be_transform_node(ret_val);
3442 /* get memory input of the Barrier */
3443 ret_mem = get_irn_n(barrier, pn_ret_mem);
3444 new_ret_mem = be_transform_node(ret_mem);
3446 frame = get_irg_frame(irg);
3448 dbgi = get_irn_dbg_info(barrier);
3449 block = be_transform_node(get_nodes_block(barrier));
3451 noreg = ia32_new_NoReg_gp(env_cg);
3453 /* store xmm0 onto stack */
3454 sse_store = new_rd_ia32_xStoreSimple(dbgi, irg, block, frame, noreg,
3455 new_ret_mem, new_ret_val);
3456 set_ia32_ls_mode(sse_store, mode);
3457 set_ia32_op_type(sse_store, ia32_AddrModeD);
3458 set_ia32_use_frame(sse_store);
3460 /* load into x87 register */
3461 fld = new_rd_ia32_vfld(dbgi, irg, block, frame, noreg, sse_store, mode);
3462 set_ia32_op_type(fld, ia32_AddrModeS);
3463 set_ia32_use_frame(fld);
3465 mproj = new_r_Proj(irg, block, fld, mode_M, pn_ia32_vfld_M);
3466 fld = new_r_Proj(irg, block, fld, mode_vfp, pn_ia32_vfld_res);
3468 /* create a new barrier */
3469 arity = get_irn_arity(barrier);
3470 in = alloca(arity * sizeof(in[0]));
3471 for (i = 0; i < arity; ++i) {
3474 if (i == pn_ret_val) {
3476 } else if (i == pn_ret_mem) {
3479 ir_node *in = get_irn_n(barrier, i);
3480 new_in = be_transform_node(in);
3485 new_barrier = new_ir_node(dbgi, irg, block,
3486 get_irn_op(barrier), get_irn_mode(barrier),
3488 copy_node_attr(barrier, new_barrier);
3489 be_duplicate_deps(barrier, new_barrier);
3490 be_set_transformed_node(barrier, new_barrier);
3491 mark_irn_visited(barrier);
3493 /* transform normally */
3494 return be_duplicate_node(node);
3498 * Transform a be_AddSP into an ia32_SubSP.
3500 static ir_node *gen_be_AddSP(ir_node *node)
3502 ir_node *sz = get_irn_n(node, be_pos_AddSP_size);
3503 ir_node *sp = get_irn_n(node, be_pos_AddSP_old_sp);
3505 return gen_binop(node, sp, sz, new_rd_ia32_SubSP, match_am);
3509 * Transform a be_SubSP into an ia32_AddSP
3511 static ir_node *gen_be_SubSP(ir_node *node)
3513 ir_node *sz = get_irn_n(node, be_pos_SubSP_size);
3514 ir_node *sp = get_irn_n(node, be_pos_SubSP_old_sp);
3516 return gen_binop(node, sp, sz, new_rd_ia32_AddSP, match_am);
3520 * Change some phi modes
3522 static ir_node *gen_Phi(ir_node *node) {
3523 ir_node *block = be_transform_node(get_nodes_block(node));
3524 ir_graph *irg = current_ir_graph;
3525 dbg_info *dbgi = get_irn_dbg_info(node);
3526 ir_mode *mode = get_irn_mode(node);
3529 if(ia32_mode_needs_gp_reg(mode)) {
3530 /* we shouldn't have any 64bit stuff around anymore */
3531 assert(get_mode_size_bits(mode) <= 32);
3532 /* all integer operations are on 32bit registers now */
3534 } else if(mode_is_float(mode)) {
3535 if (ia32_cg_config.use_sse2) {
3542 /* phi nodes allow loops, so we use the old arguments for now
3543 * and fix this later */
3544 phi = new_ir_node(dbgi, irg, block, op_Phi, mode, get_irn_arity(node),
3545 get_irn_in(node) + 1);
3546 copy_node_attr(node, phi);
3547 be_duplicate_deps(node, phi);
3549 be_set_transformed_node(node, phi);
3550 be_enqueue_preds(node);
3558 static ir_node *gen_IJmp(ir_node *node)
3560 ir_node *block = get_nodes_block(node);
3561 ir_node *new_block = be_transform_node(block);
3562 dbg_info *dbgi = get_irn_dbg_info(node);
3563 ir_node *op = get_IJmp_target(node);
3565 ia32_address_mode_t am;
3566 ia32_address_t *addr = &am.addr;
3568 assert(get_irn_mode(op) == mode_P);
3570 match_arguments(&am, block, NULL, op, NULL,
3571 match_am | match_8bit_am | match_16bit_am |
3572 match_immediate | match_8bit | match_16bit);
3574 new_node = new_rd_ia32_IJmp(dbgi, current_ir_graph, new_block,
3575 addr->base, addr->index, addr->mem,
3577 set_am_attributes(new_node, &am);
3578 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
3580 new_node = fix_mem_proj(new_node, &am);
3586 * Transform a Bound node.
3588 static ir_node *gen_Bound(ir_node *node)
3591 ir_node *lower = get_Bound_lower(node);
3592 dbg_info *dbgi = get_irn_dbg_info(node);
3594 if (is_Const_0(lower)) {
3595 /* typical case for Java */
3596 ir_node *sub, *res, *flags, *block;
3597 ir_graph *irg = current_ir_graph;
3599 res = gen_binop(node, get_Bound_index(node), get_Bound_upper(node),
3600 new_rd_ia32_Sub, match_mode_neutral | match_am | match_immediate);
3602 block = get_nodes_block(res);
3603 if (! is_Proj(res)) {
3605 set_irn_mode(sub, mode_T);
3606 res = new_rd_Proj(NULL, irg, block, sub, mode_Iu, pn_ia32_res);
3608 sub = get_Proj_pred(res);
3610 flags = new_rd_Proj(NULL, irg, block, sub, mode_Iu, pn_ia32_Sub_flags);
3611 new_node = new_rd_ia32_Jcc(dbgi, irg, block, flags, pn_Cmp_Lt | ia32_pn_Cmp_unsigned);
3612 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
3614 panic("generic Bound not supported in ia32 Backend");
3620 static ir_node *gen_ia32_l_ShlDep(ir_node *node)
3622 ir_node *left = get_irn_n(node, n_ia32_l_ShlDep_val);
3623 ir_node *right = get_irn_n(node, n_ia32_l_ShlDep_count);
3625 return gen_shift_binop(node, left, right, new_rd_ia32_Shl,
3626 match_immediate | match_mode_neutral);
3629 static ir_node *gen_ia32_l_ShrDep(ir_node *node)
3631 ir_node *left = get_irn_n(node, n_ia32_l_ShrDep_val);
3632 ir_node *right = get_irn_n(node, n_ia32_l_ShrDep_count);
3633 return gen_shift_binop(node, left, right, new_rd_ia32_Shr,
3637 static ir_node *gen_ia32_l_SarDep(ir_node *node)
3639 ir_node *left = get_irn_n(node, n_ia32_l_SarDep_val);
3640 ir_node *right = get_irn_n(node, n_ia32_l_SarDep_count);
3641 return gen_shift_binop(node, left, right, new_rd_ia32_Sar,
3645 static ir_node *gen_ia32_l_Add(ir_node *node) {
3646 ir_node *left = get_irn_n(node, n_ia32_l_Add_left);
3647 ir_node *right = get_irn_n(node, n_ia32_l_Add_right);
3648 ir_node *lowered = gen_binop(node, left, right, new_rd_ia32_Add,
3649 match_commutative | match_am | match_immediate |
3650 match_mode_neutral);
3652 if(is_Proj(lowered)) {
3653 lowered = get_Proj_pred(lowered);
3655 assert(is_ia32_Add(lowered));
3656 set_irn_mode(lowered, mode_T);
3662 static ir_node *gen_ia32_l_Adc(ir_node *node)
3664 return gen_binop_flags(node, new_rd_ia32_Adc,
3665 match_commutative | match_am | match_immediate |
3666 match_mode_neutral);
3670 * Transforms a l_MulS into a "real" MulS node.
3672 * @return the created ia32 Mul node
3674 static ir_node *gen_ia32_l_Mul(ir_node *node) {
3675 ir_node *left = get_binop_left(node);
3676 ir_node *right = get_binop_right(node);
3678 return gen_binop(node, left, right, new_rd_ia32_Mul,
3679 match_commutative | match_am | match_mode_neutral);
3683 * Transforms a l_IMulS into a "real" IMul1OPS node.
3685 * @return the created ia32 IMul1OP node
3687 static ir_node *gen_ia32_l_IMul(ir_node *node) {
3688 ir_node *left = get_binop_left(node);
3689 ir_node *right = get_binop_right(node);
3691 return gen_binop(node, left, right, new_rd_ia32_IMul1OP,
3692 match_commutative | match_am | match_mode_neutral);
3695 static ir_node *gen_ia32_l_Sub(ir_node *node) {
3696 ir_node *left = get_irn_n(node, n_ia32_l_Sub_minuend);
3697 ir_node *right = get_irn_n(node, n_ia32_l_Sub_subtrahend);
3698 ir_node *lowered = gen_binop(node, left, right, new_rd_ia32_Sub,
3699 match_am | match_immediate | match_mode_neutral);
3701 if(is_Proj(lowered)) {
3702 lowered = get_Proj_pred(lowered);
3704 assert(is_ia32_Sub(lowered));
3705 set_irn_mode(lowered, mode_T);
3711 static ir_node *gen_ia32_l_Sbb(ir_node *node) {
3712 return gen_binop_flags(node, new_rd_ia32_Sbb,
3713 match_am | match_immediate | match_mode_neutral);
3717 * Transforms a l_ShlD/l_ShrD into a ShlD/ShrD. Those nodes have 3 data inputs:
3718 * op1 - target to be shifted
3719 * op2 - contains bits to be shifted into target
3721 * Only op3 can be an immediate.
3723 static ir_node *gen_lowered_64bit_shifts(ir_node *node, ir_node *high,
3724 ir_node *low, ir_node *count)
3726 ir_node *block = get_nodes_block(node);
3727 ir_node *new_block = be_transform_node(block);
3728 ir_graph *irg = current_ir_graph;
3729 dbg_info *dbgi = get_irn_dbg_info(node);
3730 ir_node *new_high = be_transform_node(high);
3731 ir_node *new_low = be_transform_node(low);
3735 /* the shift amount can be any mode that is bigger than 5 bits, since all
3736 * other bits are ignored anyway */
3737 while (is_Conv(count) && get_irn_n_edges(count) == 1) {
3738 assert(get_mode_size_bits(get_irn_mode(count)) >= 5);
3739 count = get_Conv_op(count);
3741 new_count = create_immediate_or_transform(count, 0);
3743 if (is_ia32_l_ShlD(node)) {
3744 new_node = new_rd_ia32_ShlD(dbgi, irg, new_block, new_high, new_low,
3747 new_node = new_rd_ia32_ShrD(dbgi, irg, new_block, new_high, new_low,
3750 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
3755 static ir_node *gen_ia32_l_ShlD(ir_node *node)
3757 ir_node *high = get_irn_n(node, n_ia32_l_ShlD_val_high);
3758 ir_node *low = get_irn_n(node, n_ia32_l_ShlD_val_low);
3759 ir_node *count = get_irn_n(node, n_ia32_l_ShlD_count);
3760 return gen_lowered_64bit_shifts(node, high, low, count);
3763 static ir_node *gen_ia32_l_ShrD(ir_node *node)
3765 ir_node *high = get_irn_n(node, n_ia32_l_ShrD_val_high);
3766 ir_node *low = get_irn_n(node, n_ia32_l_ShrD_val_low);
3767 ir_node *count = get_irn_n(node, n_ia32_l_ShrD_count);
3768 return gen_lowered_64bit_shifts(node, high, low, count);
3771 static ir_node *gen_ia32_l_LLtoFloat(ir_node *node) {
3772 ir_node *src_block = get_nodes_block(node);
3773 ir_node *block = be_transform_node(src_block);
3774 ir_graph *irg = current_ir_graph;
3775 dbg_info *dbgi = get_irn_dbg_info(node);
3776 ir_node *frame = get_irg_frame(irg);
3777 ir_node *noreg = ia32_new_NoReg_gp(env_cg);
3778 ir_node *nomem = new_NoMem();
3779 ir_node *val_low = get_irn_n(node, n_ia32_l_LLtoFloat_val_low);
3780 ir_node *val_high = get_irn_n(node, n_ia32_l_LLtoFloat_val_high);
3781 ir_node *new_val_low = be_transform_node(val_low);
3782 ir_node *new_val_high = be_transform_node(val_high);
3787 ir_node *store_high;
3789 if(!mode_is_signed(get_irn_mode(val_high))) {
3790 panic("unsigned long long -> float not supported yet (%+F)", node);
3794 store_low = new_rd_ia32_Store(dbgi, irg, block, frame, noreg, nomem,
3796 store_high = new_rd_ia32_Store(dbgi, irg, block, frame, noreg, nomem,
3798 SET_IA32_ORIG_NODE(store_low, ia32_get_old_node_name(env_cg, node));
3799 SET_IA32_ORIG_NODE(store_high, ia32_get_old_node_name(env_cg, node));
3801 set_ia32_use_frame(store_low);
3802 set_ia32_use_frame(store_high);
3803 set_ia32_op_type(store_low, ia32_AddrModeD);
3804 set_ia32_op_type(store_high, ia32_AddrModeD);
3805 set_ia32_ls_mode(store_low, mode_Iu);
3806 set_ia32_ls_mode(store_high, mode_Is);
3807 add_ia32_am_offs_int(store_high, 4);
3811 sync = new_rd_Sync(dbgi, irg, block, 2, in);
3814 fild = new_rd_ia32_vfild(dbgi, irg, block, frame, noreg, sync);
3816 set_ia32_use_frame(fild);
3817 set_ia32_op_type(fild, ia32_AddrModeS);
3818 set_ia32_ls_mode(fild, mode_Ls);
3820 SET_IA32_ORIG_NODE(fild, ia32_get_old_node_name(env_cg, node));
3822 return new_r_Proj(irg, block, fild, mode_vfp, pn_ia32_vfild_res);
3825 static ir_node *gen_ia32_l_FloattoLL(ir_node *node) {
3826 ir_node *src_block = get_nodes_block(node);
3827 ir_node *block = be_transform_node(src_block);
3828 ir_graph *irg = current_ir_graph;
3829 dbg_info *dbgi = get_irn_dbg_info(node);
3830 ir_node *frame = get_irg_frame(irg);
3831 ir_node *noreg = ia32_new_NoReg_gp(env_cg);
3832 ir_node *nomem = new_NoMem();
3833 ir_node *val = get_irn_n(node, n_ia32_l_FloattoLL_val);
3834 ir_node *new_val = be_transform_node(val);
3835 ir_node *fist, *mem;
3837 mem = gen_vfist(dbgi, irg, block, frame, noreg, nomem, new_val, &fist);
3838 SET_IA32_ORIG_NODE(fist, ia32_get_old_node_name(env_cg, node));
3839 set_ia32_use_frame(fist);
3840 set_ia32_op_type(fist, ia32_AddrModeD);
3841 set_ia32_ls_mode(fist, mode_Ls);
3847 * the BAD transformer.
3849 static ir_node *bad_transform(ir_node *node) {
3850 panic("No transform function for %+F available.", node);
3854 static ir_node *gen_Proj_l_FloattoLL(ir_node *node) {
3855 ir_graph *irg = current_ir_graph;
3856 ir_node *block = be_transform_node(get_nodes_block(node));
3857 ir_node *pred = get_Proj_pred(node);
3858 ir_node *new_pred = be_transform_node(pred);
3859 ir_node *frame = get_irg_frame(irg);
3860 ir_node *noreg = ia32_new_NoReg_gp(env_cg);
3861 dbg_info *dbgi = get_irn_dbg_info(node);
3862 long pn = get_Proj_proj(node);
3867 load = new_rd_ia32_Load(dbgi, irg, block, frame, noreg, new_pred);
3868 SET_IA32_ORIG_NODE(load, ia32_get_old_node_name(env_cg, node));
3869 set_ia32_use_frame(load);
3870 set_ia32_op_type(load, ia32_AddrModeS);
3871 set_ia32_ls_mode(load, mode_Iu);
3872 /* we need a 64bit stackslot (fist stores 64bit) even though we only load
3873 * 32 bit from it with this particular load */
3874 attr = get_ia32_attr(load);
3875 attr->data.need_64bit_stackent = 1;
3877 if (pn == pn_ia32_l_FloattoLL_res_high) {
3878 add_ia32_am_offs_int(load, 4);
3880 assert(pn == pn_ia32_l_FloattoLL_res_low);
3883 proj = new_r_Proj(irg, block, load, mode_Iu, pn_ia32_Load_res);
3889 * Transform the Projs of an AddSP.
3891 static ir_node *gen_Proj_be_AddSP(ir_node *node) {
3892 ir_node *block = be_transform_node(get_nodes_block(node));
3893 ir_node *pred = get_Proj_pred(node);
3894 ir_node *new_pred = be_transform_node(pred);
3895 ir_graph *irg = current_ir_graph;
3896 dbg_info *dbgi = get_irn_dbg_info(node);
3897 long proj = get_Proj_proj(node);
3899 if (proj == pn_be_AddSP_sp) {
3900 ir_node *res = new_rd_Proj(dbgi, irg, block, new_pred, mode_Iu,
3901 pn_ia32_SubSP_stack);
3902 arch_set_irn_register(env_cg->arch_env, res, &ia32_gp_regs[REG_ESP]);
3904 } else if(proj == pn_be_AddSP_res) {
3905 return new_rd_Proj(dbgi, irg, block, new_pred, mode_Iu,
3906 pn_ia32_SubSP_addr);
3907 } else if (proj == pn_be_AddSP_M) {
3908 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_ia32_SubSP_M);
3912 return new_rd_Unknown(irg, get_irn_mode(node));
3916 * Transform the Projs of a SubSP.
3918 static ir_node *gen_Proj_be_SubSP(ir_node *node) {
3919 ir_node *block = be_transform_node(get_nodes_block(node));
3920 ir_node *pred = get_Proj_pred(node);
3921 ir_node *new_pred = be_transform_node(pred);
3922 ir_graph *irg = current_ir_graph;
3923 dbg_info *dbgi = get_irn_dbg_info(node);
3924 long proj = get_Proj_proj(node);
3926 if (proj == pn_be_SubSP_sp) {
3927 ir_node *res = new_rd_Proj(dbgi, irg, block, new_pred, mode_Iu,
3928 pn_ia32_AddSP_stack);
3929 arch_set_irn_register(env_cg->arch_env, res, &ia32_gp_regs[REG_ESP]);
3931 } else if (proj == pn_be_SubSP_M) {
3932 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_ia32_AddSP_M);
3936 return new_rd_Unknown(irg, get_irn_mode(node));
3940 * Transform and renumber the Projs from a Load.
3942 static ir_node *gen_Proj_Load(ir_node *node) {
3944 ir_node *block = be_transform_node(get_nodes_block(node));
3945 ir_node *pred = get_Proj_pred(node);
3946 ir_graph *irg = current_ir_graph;
3947 dbg_info *dbgi = get_irn_dbg_info(node);
3948 long proj = get_Proj_proj(node);
3950 /* loads might be part of source address mode matches, so we don't
3951 * transform the ProjMs yet (with the exception of loads whose result is
3954 if (is_Load(pred) && proj == pn_Load_M && get_irn_n_edges(pred) > 1) {
3957 /* this is needed, because sometimes we have loops that are only
3958 reachable through the ProjM */
3959 be_enqueue_preds(node);
3960 /* do it in 2 steps, to silence firm verifier */
3961 res = new_rd_Proj(dbgi, irg, block, pred, mode_M, pn_Load_M);
3962 set_Proj_proj(res, pn_ia32_mem);
3966 /* renumber the proj */
3967 new_pred = be_transform_node(pred);
3968 if (is_ia32_Load(new_pred)) {
3971 return new_rd_Proj(dbgi, irg, block, new_pred, mode_Iu, pn_ia32_Load_res);
3973 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_ia32_Load_M);
3974 case pn_Load_X_regular:
3975 return new_rd_Jmp(dbgi, irg, block);
3976 case pn_Load_X_except:
3977 /* This Load might raise an exception. Mark it. */
3978 set_ia32_exc_label(new_pred, 1);
3979 return new_rd_Proj(dbgi, irg, block, new_pred, mode_X, pn_ia32_Load_X_exc);
3983 } else if (is_ia32_Conv_I2I(new_pred) ||
3984 is_ia32_Conv_I2I8Bit(new_pred)) {
3985 set_irn_mode(new_pred, mode_T);
3986 if (proj == pn_Load_res) {
3987 return new_rd_Proj(dbgi, irg, block, new_pred, mode_Iu, pn_ia32_res);
3988 } else if (proj == pn_Load_M) {
3989 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_ia32_mem);
3991 } else if (is_ia32_xLoad(new_pred)) {
3994 return new_rd_Proj(dbgi, irg, block, new_pred, mode_xmm, pn_ia32_xLoad_res);
3996 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_ia32_xLoad_M);
3997 case pn_Load_X_regular:
3998 return new_rd_Jmp(dbgi, irg, block);
3999 case pn_Load_X_except:
4000 /* This Load might raise an exception. Mark it. */
4001 set_ia32_exc_label(new_pred, 1);
4002 return new_rd_Proj(dbgi, irg, block, new_pred, mode_X, pn_ia32_xLoad_X_exc);
4006 } else if (is_ia32_vfld(new_pred)) {
4009 return new_rd_Proj(dbgi, irg, block, new_pred, mode_vfp, pn_ia32_vfld_res);
4011 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_ia32_vfld_M);
4012 case pn_Load_X_regular:
4013 return new_rd_Jmp(dbgi, irg, block);
4014 case pn_Load_X_except:
4015 /* This Load might raise an exception. Mark it. */
4016 set_ia32_exc_label(new_pred, 1);
4017 return new_rd_Proj(dbgi, irg, block, new_pred, mode_X, pn_ia32_xLoad_X_exc);
4022 /* can happen for ProJMs when source address mode happened for the
4025 /* however it should not be the result proj, as that would mean the
4026 load had multiple users and should not have been used for
4028 if (proj != pn_Load_M) {
4029 panic("internal error: transformed node not a Load");
4031 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, 1);
4035 return new_rd_Unknown(irg, get_irn_mode(node));
4039 * Transform and renumber the Projs from a DivMod like instruction.
4041 static ir_node *gen_Proj_DivMod(ir_node *node) {
4042 ir_node *block = be_transform_node(get_nodes_block(node));
4043 ir_node *pred = get_Proj_pred(node);
4044 ir_node *new_pred = be_transform_node(pred);
4045 ir_graph *irg = current_ir_graph;
4046 dbg_info *dbgi = get_irn_dbg_info(node);
4047 ir_mode *mode = get_irn_mode(node);
4048 long proj = get_Proj_proj(node);
4050 assert(is_ia32_Div(new_pred) || is_ia32_IDiv(new_pred));
4052 switch (get_irn_opcode(pred)) {
4056 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_ia32_Div_M);
4058 return new_rd_Proj(dbgi, irg, block, new_pred, mode_Iu, pn_ia32_Div_div_res);
4059 case pn_Div_X_regular:
4060 return new_rd_Jmp(dbgi, irg, block);
4061 case pn_Div_X_except:
4062 set_ia32_exc_label(new_pred, 1);
4063 return new_rd_Proj(dbgi, irg, block, new_pred, mode_X, pn_ia32_Div_X_exc);
4071 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_ia32_Div_M);
4073 return new_rd_Proj(dbgi, irg, block, new_pred, mode_Iu, pn_ia32_Div_mod_res);
4074 case pn_Mod_X_except:
4075 set_ia32_exc_label(new_pred, 1);
4076 return new_rd_Proj(dbgi, irg, block, new_pred, mode_X, pn_ia32_Div_X_exc);
4084 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_ia32_Div_M);
4085 case pn_DivMod_res_div:
4086 return new_rd_Proj(dbgi, irg, block, new_pred, mode_Iu, pn_ia32_Div_div_res);
4087 case pn_DivMod_res_mod:
4088 return new_rd_Proj(dbgi, irg, block, new_pred, mode_Iu, pn_ia32_Div_mod_res);
4089 case pn_DivMod_X_regular:
4090 return new_rd_Jmp(dbgi, irg, block);
4091 case pn_DivMod_X_except:
4092 set_ia32_exc_label(new_pred, 1);
4093 return new_rd_Proj(dbgi, irg, block, new_pred, mode_X, pn_ia32_Div_X_exc);
4103 return new_rd_Unknown(irg, mode);
4107 * Transform and renumber the Projs from a CopyB.
4109 static ir_node *gen_Proj_CopyB(ir_node *node) {
4110 ir_node *block = be_transform_node(get_nodes_block(node));
4111 ir_node *pred = get_Proj_pred(node);
4112 ir_node *new_pred = be_transform_node(pred);
4113 ir_graph *irg = current_ir_graph;
4114 dbg_info *dbgi = get_irn_dbg_info(node);
4115 ir_mode *mode = get_irn_mode(node);
4116 long proj = get_Proj_proj(node);
4119 case pn_CopyB_M_regular:
4120 if (is_ia32_CopyB_i(new_pred)) {
4121 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_ia32_CopyB_i_M);
4122 } else if (is_ia32_CopyB(new_pred)) {
4123 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_ia32_CopyB_M);
4131 return new_rd_Unknown(irg, mode);
4135 * Transform and renumber the Projs from a Quot.
4137 static ir_node *gen_Proj_Quot(ir_node *node) {
4138 ir_node *block = be_transform_node(get_nodes_block(node));
4139 ir_node *pred = get_Proj_pred(node);
4140 ir_node *new_pred = be_transform_node(pred);
4141 ir_graph *irg = current_ir_graph;
4142 dbg_info *dbgi = get_irn_dbg_info(node);
4143 ir_mode *mode = get_irn_mode(node);
4144 long proj = get_Proj_proj(node);
4148 if (is_ia32_xDiv(new_pred)) {
4149 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_ia32_xDiv_M);
4150 } else if (is_ia32_vfdiv(new_pred)) {
4151 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_ia32_vfdiv_M);
4155 if (is_ia32_xDiv(new_pred)) {
4156 return new_rd_Proj(dbgi, irg, block, new_pred, mode_xmm, pn_ia32_xDiv_res);
4157 } else if (is_ia32_vfdiv(new_pred)) {
4158 return new_rd_Proj(dbgi, irg, block, new_pred, mode_vfp, pn_ia32_vfdiv_res);
4161 case pn_Quot_X_regular:
4162 case pn_Quot_X_except:
4168 return new_rd_Unknown(irg, mode);
4171 static ir_node *gen_be_Call(ir_node *node) {
4172 ir_node *res = be_duplicate_node(node);
4175 be_node_add_flags(res, -1, arch_irn_flags_modify_flags);
4177 /* Run the x87 simulator if the call returns a float value */
4178 call_tp = be_Call_get_type(node);
4179 if (get_method_n_ress(call_tp) > 0) {
4180 ir_type *const res_type = get_method_res_type(call_tp, 0);
4181 ir_mode *const res_mode = get_type_mode(res_type);
4183 if (res_mode != NULL && mode_is_float(res_mode)) {
4184 env_cg->do_x87_sim = 1;
4191 static ir_node *gen_be_IncSP(ir_node *node) {
4192 ir_node *res = be_duplicate_node(node);
4193 be_node_add_flags(res, -1, arch_irn_flags_modify_flags);
4199 * Transform the Projs from a be_Call.
4201 static ir_node *gen_Proj_be_Call(ir_node *node) {
4202 ir_node *block = be_transform_node(get_nodes_block(node));
4203 ir_node *call = get_Proj_pred(node);
4204 ir_node *new_call = be_transform_node(call);
4205 ir_graph *irg = current_ir_graph;
4206 dbg_info *dbgi = get_irn_dbg_info(node);
4207 ir_type *method_type = be_Call_get_type(call);
4208 int n_res = get_method_n_ress(method_type);
4209 long proj = get_Proj_proj(node);
4210 ir_mode *mode = get_irn_mode(node);
4212 const arch_register_class_t *cls;
4214 /* The following is kinda tricky: If we're using SSE, then we have to
4215 * move the result value of the call in floating point registers to an
4216 * xmm register, we therefore construct a GetST0 -> xLoad sequence
4217 * after the call, we have to make sure to correctly make the
4218 * MemProj and the result Proj use these 2 nodes
4220 if (proj == pn_be_Call_M_regular) {
4221 // get new node for result, are we doing the sse load/store hack?
4222 ir_node *call_res = be_get_Proj_for_pn(call, pn_be_Call_first_res);
4223 ir_node *call_res_new;
4224 ir_node *call_res_pred = NULL;
4226 if (call_res != NULL) {
4227 call_res_new = be_transform_node(call_res);
4228 call_res_pred = get_Proj_pred(call_res_new);
4231 if (call_res_pred == NULL || be_is_Call(call_res_pred)) {
4232 return new_rd_Proj(dbgi, irg, block, new_call, mode_M,
4233 pn_be_Call_M_regular);
4235 assert(is_ia32_xLoad(call_res_pred));
4236 return new_rd_Proj(dbgi, irg, block, call_res_pred, mode_M,
4240 if (ia32_cg_config.use_sse2 && proj >= pn_be_Call_first_res
4241 && proj < (pn_be_Call_first_res + n_res) && mode_is_float(mode)) {
4243 ir_node *frame = get_irg_frame(irg);
4244 ir_node *noreg = ia32_new_NoReg_gp(env_cg);
4246 ir_node *call_mem = be_get_Proj_for_pn(call, pn_be_Call_M_regular);
4249 /* in case there is no memory output: create one to serialize the copy
4251 call_mem = new_rd_Proj(dbgi, irg, block, new_call, mode_M,
4252 pn_be_Call_M_regular);
4253 call_res = new_rd_Proj(dbgi, irg, block, new_call, mode,
4254 pn_be_Call_first_res);
4256 /* store st(0) onto stack */
4257 fstp = new_rd_ia32_vfst(dbgi, irg, block, frame, noreg, call_mem,
4259 set_ia32_op_type(fstp, ia32_AddrModeD);
4260 set_ia32_use_frame(fstp);
4262 /* load into SSE register */
4263 sse_load = new_rd_ia32_xLoad(dbgi, irg, block, frame, noreg, fstp,
4265 set_ia32_op_type(sse_load, ia32_AddrModeS);
4266 set_ia32_use_frame(sse_load);
4268 sse_load = new_rd_Proj(dbgi, irg, block, sse_load, mode_xmm,
4274 /* transform call modes */
4275 if (mode_is_data(mode)) {
4276 cls = arch_get_irn_reg_class(env_cg->arch_env, node, -1);
4280 return new_rd_Proj(dbgi, irg, block, new_call, mode, proj);
4284 * Transform the Projs from a Cmp.
4286 static ir_node *gen_Proj_Cmp(ir_node *node)
4288 /* this probably means not all mode_b nodes were lowered... */
4289 panic("trying to directly transform Proj_Cmp %+F (mode_b not lowered?)",
4294 * Transform the Projs from a Bound.
4296 static ir_node *gen_Proj_Bound(ir_node *node)
4298 ir_node *new_node, *block;
4299 ir_node *pred = get_Proj_pred(node);
4301 switch (get_Proj_proj(node)) {
4303 return be_transform_node(get_Bound_mem(pred));
4304 case pn_Bound_X_regular:
4305 new_node = be_transform_node(pred);
4306 block = get_nodes_block(new_node);
4307 return new_r_Proj(current_ir_graph, block, new_node, mode_X, pn_ia32_Jcc_true);
4308 case pn_Bound_X_except:
4309 new_node = be_transform_node(pred);
4310 block = get_nodes_block(new_node);
4311 return new_r_Proj(current_ir_graph, block, new_node, mode_X, pn_ia32_Jcc_false);
4313 return be_transform_node(get_Bound_index(pred));
4315 panic("unsupported Proj from Bound");
4319 static ir_node *gen_Proj_ASM(ir_node *node)
4325 if (get_irn_mode(node) != mode_M)
4326 return be_duplicate_node(node);
4328 pred = get_Proj_pred(node);
4329 new_pred = be_transform_node(pred);
4330 block = get_nodes_block(new_pred);
4331 return new_r_Proj(current_ir_graph, block, new_pred, mode_M,
4332 get_ia32_n_res(new_pred) + 1);
4336 * Transform and potentially renumber Proj nodes.
4338 static ir_node *gen_Proj(ir_node *node) {
4339 ir_node *pred = get_Proj_pred(node);
4342 switch (get_irn_opcode(pred)) {
4344 proj = get_Proj_proj(node);
4345 if (proj == pn_Store_M) {
4346 return be_transform_node(pred);
4349 return new_r_Bad(current_ir_graph);
4352 return gen_Proj_Load(node);
4354 return gen_Proj_ASM(node);
4358 return gen_Proj_DivMod(node);
4360 return gen_Proj_CopyB(node);
4362 return gen_Proj_Quot(node);
4364 return gen_Proj_be_SubSP(node);
4366 return gen_Proj_be_AddSP(node);
4368 return gen_Proj_be_Call(node);
4370 return gen_Proj_Cmp(node);
4372 return gen_Proj_Bound(node);
4374 proj = get_Proj_proj(node);
4375 if (proj == pn_Start_X_initial_exec) {
4376 ir_node *block = get_nodes_block(pred);
4377 dbg_info *dbgi = get_irn_dbg_info(node);
4380 /* we exchange the ProjX with a jump */
4381 block = be_transform_node(block);
4382 jump = new_rd_Jmp(dbgi, current_ir_graph, block);
4385 if (node == be_get_old_anchor(anchor_tls)) {
4386 return gen_Proj_tls(node);
4391 if (is_ia32_l_FloattoLL(pred)) {
4392 return gen_Proj_l_FloattoLL(node);
4394 } else if (!is_ia32_irn(pred)) { // Quick hack for SIMD optimization
4398 ir_mode *mode = get_irn_mode(node);
4399 if (ia32_mode_needs_gp_reg(mode)) {
4400 ir_node *new_pred = be_transform_node(pred);
4401 ir_node *block = be_transform_node(get_nodes_block(node));
4402 ir_node *new_proj = new_r_Proj(current_ir_graph, block, new_pred,
4403 mode_Iu, get_Proj_proj(node));
4404 #ifdef DEBUG_libfirm
4405 new_proj->node_nr = node->node_nr;
4411 return be_duplicate_node(node);
4415 * Enters all transform functions into the generic pointer
4417 static void register_transformers(void)
4421 /* first clear the generic function pointer for all ops */
4422 clear_irp_opcodes_generic_func();
4424 #define GEN(a) { be_transform_func *func = gen_##a; op_##a->ops.generic = (op_func) func; }
4425 #define BAD(a) op_##a->ops.generic = (op_func)bad_transform
4463 /* transform ops from intrinsic lowering */
4475 GEN(ia32_l_LLtoFloat);
4476 GEN(ia32_l_FloattoLL);
4482 /* we should never see these nodes */
4497 /* handle generic backend nodes */
4506 op_Mulh = get_op_Mulh();
4515 * Pre-transform all unknown and noreg nodes.
4517 static void ia32_pretransform_node(void *arch_cg) {
4518 ia32_code_gen_t *cg = arch_cg;
4520 cg->unknown_gp = be_pre_transform_node(cg->unknown_gp);
4521 cg->unknown_vfp = be_pre_transform_node(cg->unknown_vfp);
4522 cg->unknown_xmm = be_pre_transform_node(cg->unknown_xmm);
4523 cg->noreg_gp = be_pre_transform_node(cg->noreg_gp);
4524 cg->noreg_vfp = be_pre_transform_node(cg->noreg_vfp);
4525 cg->noreg_xmm = be_pre_transform_node(cg->noreg_xmm);
4530 * Walker, checks if all ia32 nodes producing more than one result have their
4531 * Projs, otherwise creates new Projs and keeps them using a be_Keep node.
4533 static void add_missing_keep_walker(ir_node *node, void *data)
4536 unsigned found_projs = 0;
4537 const ir_edge_t *edge;
4538 ir_mode *mode = get_irn_mode(node);
4543 if(!is_ia32_irn(node))
4546 n_outs = get_ia32_n_res(node);
4549 if(is_ia32_SwitchJmp(node))
4552 assert(n_outs < (int) sizeof(unsigned) * 8);
4553 foreach_out_edge(node, edge) {
4554 ir_node *proj = get_edge_src_irn(edge);
4555 int pn = get_Proj_proj(proj);
4557 if (get_irn_mode(proj) == mode_M)
4560 assert(pn < n_outs);
4561 found_projs |= 1 << pn;
4565 /* are keeps missing? */
4567 for(i = 0; i < n_outs; ++i) {
4570 const arch_register_req_t *req;
4571 const arch_register_class_t *cls;
4573 if(found_projs & (1 << i)) {
4577 req = get_ia32_out_req(node, i);
4582 if(cls == &ia32_reg_classes[CLASS_ia32_flags]) {
4586 block = get_nodes_block(node);
4587 in[0] = new_r_Proj(current_ir_graph, block, node,
4588 arch_register_class_mode(cls), i);
4589 if(last_keep != NULL) {
4590 be_Keep_add_node(last_keep, cls, in[0]);
4592 last_keep = be_new_Keep(cls, current_ir_graph, block, 1, in);
4593 if(sched_is_scheduled(node)) {
4594 sched_add_after(node, last_keep);
4601 * Adds missing keeps to nodes. Adds missing Proj nodes for unused outputs
4604 void ia32_add_missing_keeps(ia32_code_gen_t *cg)
4606 ir_graph *irg = be_get_birg_irg(cg->birg);
4607 irg_walk_graph(irg, add_missing_keep_walker, NULL, NULL);
4610 /* do the transformation */
4611 void ia32_transform_graph(ia32_code_gen_t *cg) {
4613 ir_graph *irg = cg->irg;
4615 register_transformers();
4617 initial_fpcw = NULL;
4619 BE_TIMER_PUSH(t_heights);
4620 heights = heights_new(irg);
4621 BE_TIMER_POP(t_heights);
4622 ia32_calculate_non_address_mode_nodes(cg->birg);
4624 /* the transform phase is not safe for CSE (yet) because several nodes get
4625 * attributes set after their creation */
4626 cse_last = get_opt_cse();
4629 be_transform_graph(cg->birg, ia32_pretransform_node, cg);
4631 set_opt_cse(cse_last);
4633 ia32_free_non_address_mode_nodes();
4634 heights_free(heights);
4638 void ia32_init_transform(void)
4640 FIRM_DBG_REGISTER(dbg, "firm.be.ia32.transform");