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
34 #include "irgraph_t.h"
39 #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 bool is_Const_0(ir_node *node)
136 return is_Const(node) && is_Const_null(node);
139 /** Return non-zero is a node represents the 1 constant. */
140 static bool is_Const_1(ir_node *node)
142 return is_Const(node) && is_Const_one(node);
145 /** Return non-zero is a node represents the -1 constant. */
146 static bool is_Const_Minus_1(ir_node *node)
148 return is_Const(node) && is_Const_all_one(node);
152 * returns true if constant can be created with a simple float command
154 static bool is_simple_x87_Const(ir_node *node)
156 tarval *tv = get_Const_tarval(node);
157 if (tarval_is_null(tv) || tarval_is_one(tv))
160 /* TODO: match all the other float constants */
165 * returns true if constant can be created with a simple float command
167 static bool is_simple_sse_Const(ir_node *node)
169 tarval *tv = get_Const_tarval(node);
170 ir_mode *mode = get_tarval_mode(tv);
175 if (tarval_is_null(tv) || tarval_is_one(tv))
178 if (mode == mode_D) {
179 unsigned val = get_tarval_sub_bits(tv, 0) |
180 (get_tarval_sub_bits(tv, 1) << 8) |
181 (get_tarval_sub_bits(tv, 2) << 16) |
182 (get_tarval_sub_bits(tv, 3) << 24);
184 /* lower 32bit are zero, really a 32bit constant */
188 /* TODO: match all the other float constants */
193 * Transforms a Const.
195 static ir_node *gen_Const(ir_node *node)
197 ir_graph *irg = current_ir_graph;
198 ir_node *old_block = get_nodes_block(node);
199 ir_node *block = be_transform_node(old_block);
200 dbg_info *dbgi = get_irn_dbg_info(node);
201 ir_mode *mode = get_irn_mode(node);
203 assert(is_Const(node));
205 if (mode_is_float(mode)) {
207 ir_node *noreg = ia32_new_NoReg_gp(env_cg);
208 ir_node *nomem = new_NoMem();
212 if (ia32_cg_config.use_sse2) {
213 tarval *tv = get_Const_tarval(node);
214 if (tarval_is_null(tv)) {
215 load = new_rd_ia32_xZero(dbgi, irg, block);
216 set_ia32_ls_mode(load, mode);
218 } else if (tarval_is_one(tv)) {
219 int cnst = mode == mode_F ? 26 : 55;
220 ir_node *imm1 = create_Immediate(NULL, 0, cnst);
221 ir_node *imm2 = create_Immediate(NULL, 0, 2);
222 ir_node *pslld, *psrld;
224 load = new_rd_ia32_xAllOnes(dbgi, irg, block);
225 set_ia32_ls_mode(load, mode);
226 pslld = new_rd_ia32_xPslld(dbgi, irg, block, load, imm1);
227 set_ia32_ls_mode(pslld, mode);
228 psrld = new_rd_ia32_xPsrld(dbgi, irg, block, pslld, imm2);
229 set_ia32_ls_mode(psrld, mode);
231 } else if (mode == mode_F) {
232 /* we can place any 32bit constant by using a movd gp, sse */
233 unsigned val = get_tarval_sub_bits(tv, 0) |
234 (get_tarval_sub_bits(tv, 1) << 8) |
235 (get_tarval_sub_bits(tv, 2) << 16) |
236 (get_tarval_sub_bits(tv, 3) << 24);
237 ir_node *cnst = new_rd_ia32_Const(dbgi, irg, block, NULL, 0, val);
238 load = new_rd_ia32_xMovd(dbgi, irg, block, cnst);
239 set_ia32_ls_mode(load, mode);
242 if (mode == mode_D) {
243 unsigned val = get_tarval_sub_bits(tv, 0) |
244 (get_tarval_sub_bits(tv, 1) << 8) |
245 (get_tarval_sub_bits(tv, 2) << 16) |
246 (get_tarval_sub_bits(tv, 3) << 24);
248 ir_node *imm32 = create_Immediate(NULL, 0, 32);
249 ir_node *cnst, *psllq;
251 /* fine, lower 32bit are zero, produce 32bit value */
252 val = get_tarval_sub_bits(tv, 4) |
253 (get_tarval_sub_bits(tv, 5) << 8) |
254 (get_tarval_sub_bits(tv, 6) << 16) |
255 (get_tarval_sub_bits(tv, 7) << 24);
256 cnst = new_rd_ia32_Const(dbgi, irg, block, NULL, 0, val);
257 load = new_rd_ia32_xMovd(dbgi, irg, block, cnst);
258 set_ia32_ls_mode(load, mode);
259 psllq = new_rd_ia32_xPsllq(dbgi, irg, block, load, imm32);
260 set_ia32_ls_mode(psllq, mode);
265 floatent = create_float_const_entity(node);
267 load = new_rd_ia32_xLoad(dbgi, irg, block, noreg, noreg, nomem,
269 set_ia32_op_type(load, ia32_AddrModeS);
270 set_ia32_am_sc(load, floatent);
271 set_ia32_flags(load, get_ia32_flags(load) | arch_irn_flags_rematerializable);
272 res = new_r_Proj(irg, block, load, mode_xmm, pn_ia32_xLoad_res);
275 if (is_Const_null(node)) {
276 load = new_rd_ia32_vfldz(dbgi, irg, block);
278 set_ia32_ls_mode(load, mode);
279 } else if (is_Const_one(node)) {
280 load = new_rd_ia32_vfld1(dbgi, irg, block);
282 set_ia32_ls_mode(load, mode);
284 floatent = create_float_const_entity(node);
286 load = new_rd_ia32_vfld(dbgi, irg, block, noreg, noreg, nomem, mode);
287 set_ia32_op_type(load, ia32_AddrModeS);
288 set_ia32_am_sc(load, floatent);
289 set_ia32_flags(load, get_ia32_flags(load) | arch_irn_flags_rematerializable);
290 res = new_r_Proj(irg, block, load, mode_vfp, pn_ia32_vfld_res);
291 /* take the mode from the entity */
292 set_ia32_ls_mode(load, get_type_mode(get_entity_type(floatent)));
296 SET_IA32_ORIG_NODE(load, ia32_get_old_node_name(env_cg, node));
298 be_dep_on_frame(load);
300 } else { /* non-float mode */
302 tarval *tv = get_Const_tarval(node);
305 tv = tarval_convert_to(tv, mode_Iu);
307 if (tv == get_tarval_bad() || tv == get_tarval_undefined() ||
309 panic("couldn't convert constant tarval (%+F)", node);
311 val = get_tarval_long(tv);
313 cnst = new_rd_ia32_Const(dbgi, irg, block, NULL, 0, val);
314 SET_IA32_ORIG_NODE(cnst, ia32_get_old_node_name(env_cg, node));
316 be_dep_on_frame(cnst);
322 * Transforms a SymConst.
324 static ir_node *gen_SymConst(ir_node *node)
326 ir_graph *irg = current_ir_graph;
327 ir_node *old_block = get_nodes_block(node);
328 ir_node *block = be_transform_node(old_block);
329 dbg_info *dbgi = get_irn_dbg_info(node);
330 ir_mode *mode = get_irn_mode(node);
333 if (mode_is_float(mode)) {
334 ir_node *noreg = ia32_new_NoReg_gp(env_cg);
335 ir_node *nomem = new_NoMem();
337 if (ia32_cg_config.use_sse2)
338 cnst = new_rd_ia32_xLoad(dbgi, irg, block, noreg, noreg, nomem, mode_E);
340 cnst = new_rd_ia32_vfld(dbgi, irg, block, noreg, noreg, nomem, mode_E);
341 set_ia32_am_sc(cnst, get_SymConst_entity(node));
342 set_ia32_use_frame(cnst);
346 if (get_SymConst_kind(node) != symconst_addr_ent) {
347 panic("backend only support symconst_addr_ent (at %+F)", node);
349 entity = get_SymConst_entity(node);
350 cnst = new_rd_ia32_Const(dbgi, irg, block, entity, 0, 0);
353 SET_IA32_ORIG_NODE(cnst, ia32_get_old_node_name(env_cg, node));
355 be_dep_on_frame(cnst);
359 /* Generates an entity for a known FP const (used for FP Neg + Abs) */
360 ir_entity *ia32_gen_fp_known_const(ia32_known_const_t kct)
362 static const struct {
364 const char *ent_name;
365 const char *cnst_str;
368 } names [ia32_known_const_max] = {
369 { TP_SFP_SIGN, ENT_SFP_SIGN, SFP_SIGN, 0, 16 }, /* ia32_SSIGN */
370 { TP_DFP_SIGN, ENT_DFP_SIGN, DFP_SIGN, 1, 16 }, /* ia32_DSIGN */
371 { TP_SFP_ABS, ENT_SFP_ABS, SFP_ABS, 0, 16 }, /* ia32_SABS */
372 { TP_DFP_ABS, ENT_DFP_ABS, DFP_ABS, 1, 16 }, /* ia32_DABS */
373 { TP_INT_MAX, ENT_INT_MAX, DFP_INTMAX, 2, 4 } /* ia32_INTMAX */
375 static ir_entity *ent_cache[ia32_known_const_max];
377 const char *tp_name, *ent_name, *cnst_str;
385 ent_name = names[kct].ent_name;
386 if (! ent_cache[kct]) {
387 tp_name = names[kct].tp_name;
388 cnst_str = names[kct].cnst_str;
390 switch (names[kct].mode) {
391 case 0: mode = mode_Iu; break;
392 case 1: mode = mode_Lu; break;
393 default: mode = mode_F; break;
395 tv = new_tarval_from_str(cnst_str, strlen(cnst_str), mode);
396 tp = new_type_primitive(new_id_from_str(tp_name), mode);
397 /* set the specified alignment */
398 set_type_alignment_bytes(tp, names[kct].align);
400 ent = new_entity(get_glob_type(), new_id_from_str(ent_name), tp);
402 set_entity_ld_ident(ent, get_entity_ident(ent));
403 set_entity_visibility(ent, visibility_local);
404 set_entity_variability(ent, variability_constant);
405 set_entity_allocation(ent, allocation_static);
407 /* we create a new entity here: It's initialization must resist on the
409 rem = current_ir_graph;
410 current_ir_graph = get_const_code_irg();
411 cnst = new_Const(mode, tv);
412 current_ir_graph = rem;
414 set_atomic_ent_value(ent, cnst);
416 /* cache the entry */
417 ent_cache[kct] = ent;
420 return ent_cache[kct];
424 * return true if the node is a Proj(Load) and could be used in source address
425 * mode for another node. Will return only true if the @p other node is not
426 * dependent on the memory of the Load (for binary operations use the other
427 * input here, for unary operations use NULL).
429 static int ia32_use_source_address_mode(ir_node *block, ir_node *node,
430 ir_node *other, ir_node *other2, match_flags_t flags)
435 /* float constants are always available */
436 if (is_Const(node)) {
437 ir_mode *mode = get_irn_mode(node);
438 if (mode_is_float(mode)) {
439 if (ia32_cg_config.use_sse2) {
440 if (is_simple_sse_Const(node))
443 if (is_simple_x87_Const(node))
446 if (get_irn_n_edges(node) > 1)
454 load = get_Proj_pred(node);
455 pn = get_Proj_proj(node);
456 if (!is_Load(load) || pn != pn_Load_res)
458 if (get_nodes_block(load) != block)
460 /* we only use address mode if we're the only user of the load */
461 if (get_irn_n_edges(node) != (flags & match_two_users ? 2 : 1))
463 /* in some edge cases with address mode we might reach the load normally
464 * and through some AM sequence, if it is already materialized then we
465 * can't create an AM node from it */
466 if (be_is_transformed(node))
469 /* don't do AM if other node inputs depend on the load (via mem-proj) */
470 if (other != NULL && prevents_AM(block, load, other))
473 if (other2 != NULL && prevents_AM(block, load, other2))
479 typedef struct ia32_address_mode_t ia32_address_mode_t;
480 struct ia32_address_mode_t {
485 ia32_op_type_t op_type;
489 unsigned commutative : 1;
490 unsigned ins_permuted : 1;
493 static void build_address_ptr(ia32_address_t *addr, ir_node *ptr, ir_node *mem)
497 /* construct load address */
498 memset(addr, 0, sizeof(addr[0]));
499 ia32_create_address_mode(addr, ptr, /*force=*/0);
501 noreg_gp = ia32_new_NoReg_gp(env_cg);
502 addr->base = addr->base ? be_transform_node(addr->base) : noreg_gp;
503 addr->index = addr->index ? be_transform_node(addr->index) : noreg_gp;
504 addr->mem = be_transform_node(mem);
507 static void build_address(ia32_address_mode_t *am, ir_node *node)
509 ir_node *noreg_gp = ia32_new_NoReg_gp(env_cg);
510 ia32_address_t *addr = &am->addr;
516 if (is_Const(node)) {
517 ir_entity *entity = create_float_const_entity(node);
518 addr->base = noreg_gp;
519 addr->index = noreg_gp;
520 addr->mem = new_NoMem();
521 addr->symconst_ent = entity;
523 am->ls_mode = get_type_mode(get_entity_type(entity));
524 am->pinned = op_pin_state_floats;
528 load = get_Proj_pred(node);
529 ptr = get_Load_ptr(load);
530 mem = get_Load_mem(load);
531 new_mem = be_transform_node(mem);
532 am->pinned = get_irn_pinned(load);
533 am->ls_mode = get_Load_mode(load);
534 am->mem_proj = be_get_Proj_for_pn(load, pn_Load_M);
537 /* construct load address */
538 ia32_create_address_mode(addr, ptr, /*force=*/0);
540 addr->base = addr->base ? be_transform_node(addr->base) : noreg_gp;
541 addr->index = addr->index ? be_transform_node(addr->index) : noreg_gp;
545 static void set_address(ir_node *node, const ia32_address_t *addr)
547 set_ia32_am_scale(node, addr->scale);
548 set_ia32_am_sc(node, addr->symconst_ent);
549 set_ia32_am_offs_int(node, addr->offset);
550 if (addr->symconst_sign)
551 set_ia32_am_sc_sign(node);
553 set_ia32_use_frame(node);
554 set_ia32_frame_ent(node, addr->frame_entity);
558 * Apply attributes of a given address mode to a node.
560 static void set_am_attributes(ir_node *node, const ia32_address_mode_t *am)
562 set_address(node, &am->addr);
564 set_ia32_op_type(node, am->op_type);
565 set_ia32_ls_mode(node, am->ls_mode);
566 if (am->pinned == op_pin_state_pinned) {
567 /* beware: some nodes are already pinned and did not allow to change the state */
568 if (get_irn_pinned(node) != op_pin_state_pinned)
569 set_irn_pinned(node, op_pin_state_pinned);
572 set_ia32_commutative(node);
576 * Check, if a given node is a Down-Conv, ie. a integer Conv
577 * from a mode with a mode with more bits to a mode with lesser bits.
578 * Moreover, we return only true if the node has not more than 1 user.
580 * @param node the node
581 * @return non-zero if node is a Down-Conv
583 static int is_downconv(const ir_node *node)
591 /* we only want to skip the conv when we're the only user
592 * (not optimal but for now...)
594 if (get_irn_n_edges(node) > 1)
597 src_mode = get_irn_mode(get_Conv_op(node));
598 dest_mode = get_irn_mode(node);
599 return ia32_mode_needs_gp_reg(src_mode)
600 && ia32_mode_needs_gp_reg(dest_mode)
601 && get_mode_size_bits(dest_mode) < get_mode_size_bits(src_mode);
604 /* Skip all Down-Conv's on a given node and return the resulting node. */
605 ir_node *ia32_skip_downconv(ir_node *node)
607 while (is_downconv(node))
608 node = get_Conv_op(node);
613 static ir_node *create_upconv(ir_node *node, ir_node *orig_node)
615 ir_mode *mode = get_irn_mode(node);
620 if (mode_is_signed(mode)) {
625 block = get_nodes_block(node);
626 dbgi = get_irn_dbg_info(node);
628 return create_I2I_Conv(mode, tgt_mode, dbgi, block, node, orig_node);
632 * matches operands of a node into ia32 addressing/operand modes. This covers
633 * usage of source address mode, immediates, operations with non 32-bit modes,
635 * The resulting data is filled into the @p am struct. block is the block
636 * of the node whose arguments are matched. op1, op2 are the first and second
637 * input that are matched (op1 may be NULL). other_op is another unrelated
638 * input that is not matched! but which is needed sometimes to check if AM
639 * for op1/op2 is legal.
640 * @p flags describes the supported modes of the operation in detail.
642 static void match_arguments(ia32_address_mode_t *am, ir_node *block,
643 ir_node *op1, ir_node *op2, ir_node *other_op,
646 ia32_address_t *addr = &am->addr;
647 ir_mode *mode = get_irn_mode(op2);
648 int mode_bits = get_mode_size_bits(mode);
649 ir_node *noreg_gp, *new_op1, *new_op2;
651 unsigned commutative;
652 int use_am_and_immediates;
655 memset(am, 0, sizeof(am[0]));
657 commutative = (flags & match_commutative) != 0;
658 use_am_and_immediates = (flags & match_am_and_immediates) != 0;
659 use_am = (flags & match_am) != 0;
660 use_immediate = (flags & match_immediate) != 0;
661 assert(!use_am_and_immediates || use_immediate);
664 assert(!commutative || op1 != NULL);
665 assert(use_am || !(flags & match_8bit_am));
666 assert(use_am || !(flags & match_16bit_am));
668 if (mode_bits == 8) {
669 if (!(flags & match_8bit_am))
671 /* we don't automatically add upconvs yet */
672 assert((flags & match_mode_neutral) || (flags & match_8bit));
673 } else if (mode_bits == 16) {
674 if (!(flags & match_16bit_am))
676 /* we don't automatically add upconvs yet */
677 assert((flags & match_mode_neutral) || (flags & match_16bit));
680 /* we can simply skip downconvs for mode neutral nodes: the upper bits
681 * can be random for these operations */
682 if (flags & match_mode_neutral) {
683 op2 = ia32_skip_downconv(op2);
685 op1 = ia32_skip_downconv(op1);
689 /* match immediates. firm nodes are normalized: constants are always on the
692 if (!(flags & match_try_am) && use_immediate) {
693 new_op2 = try_create_Immediate(op2, 0);
696 noreg_gp = ia32_new_NoReg_gp(env_cg);
697 if (new_op2 == NULL &&
698 use_am && ia32_use_source_address_mode(block, op2, op1, other_op, flags)) {
699 build_address(am, op2);
700 new_op1 = (op1 == NULL ? NULL : be_transform_node(op1));
701 if (mode_is_float(mode)) {
702 new_op2 = ia32_new_NoReg_vfp(env_cg);
706 am->op_type = ia32_AddrModeS;
707 } else if (commutative && (new_op2 == NULL || use_am_and_immediates) &&
709 ia32_use_source_address_mode(block, op1, op2, other_op, flags)) {
711 build_address(am, op1);
713 if (mode_is_float(mode)) {
714 noreg = ia32_new_NoReg_vfp(env_cg);
719 if (new_op2 != NULL) {
722 new_op1 = be_transform_node(op2);
724 am->ins_permuted = 1;
726 am->op_type = ia32_AddrModeS;
728 am->op_type = ia32_Normal;
730 if (flags & match_try_am) {
736 new_op1 = (op1 == NULL ? NULL : be_transform_node(op1));
738 new_op2 = be_transform_node(op2);
740 (flags & match_mode_neutral ? mode_Iu : get_irn_mode(op2));
742 if (addr->base == NULL)
743 addr->base = noreg_gp;
744 if (addr->index == NULL)
745 addr->index = noreg_gp;
746 if (addr->mem == NULL)
747 addr->mem = new_NoMem();
749 am->new_op1 = new_op1;
750 am->new_op2 = new_op2;
751 am->commutative = commutative;
754 static ir_node *fix_mem_proj(ir_node *node, ia32_address_mode_t *am)
759 if (am->mem_proj == NULL)
762 /* we have to create a mode_T so the old MemProj can attach to us */
763 mode = get_irn_mode(node);
764 load = get_Proj_pred(am->mem_proj);
766 be_set_transformed_node(load, node);
768 if (mode != mode_T) {
769 set_irn_mode(node, mode_T);
770 return new_rd_Proj(NULL, current_ir_graph, get_nodes_block(node), node, mode, pn_ia32_res);
777 * Construct a standard binary operation, set AM and immediate if required.
779 * @param node The original node for which the binop is created
780 * @param op1 The first operand
781 * @param op2 The second operand
782 * @param func The node constructor function
783 * @return The constructed ia32 node.
785 static ir_node *gen_binop(ir_node *node, ir_node *op1, ir_node *op2,
786 construct_binop_func *func, match_flags_t flags)
789 ir_node *block, *new_block, *new_node;
790 ia32_address_mode_t am;
791 ia32_address_t *addr = &am.addr;
793 block = get_nodes_block(node);
794 match_arguments(&am, block, op1, op2, NULL, flags);
796 dbgi = get_irn_dbg_info(node);
797 new_block = be_transform_node(block);
798 new_node = func(dbgi, current_ir_graph, new_block,
799 addr->base, addr->index, addr->mem,
800 am.new_op1, am.new_op2);
801 set_am_attributes(new_node, &am);
802 /* we can't use source address mode anymore when using immediates */
803 if (!(flags & match_am_and_immediates) &&
804 (is_ia32_Immediate(am.new_op1) || is_ia32_Immediate(am.new_op2)))
805 set_ia32_am_support(new_node, ia32_am_none);
806 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
808 new_node = fix_mem_proj(new_node, &am);
815 n_ia32_l_binop_right,
816 n_ia32_l_binop_eflags
818 COMPILETIME_ASSERT(n_ia32_l_binop_left == n_ia32_l_Adc_left, n_Adc_left)
819 COMPILETIME_ASSERT(n_ia32_l_binop_right == n_ia32_l_Adc_right, n_Adc_right)
820 COMPILETIME_ASSERT(n_ia32_l_binop_eflags == n_ia32_l_Adc_eflags, n_Adc_eflags)
821 COMPILETIME_ASSERT(n_ia32_l_binop_left == n_ia32_l_Sbb_minuend, n_Sbb_minuend)
822 COMPILETIME_ASSERT(n_ia32_l_binop_right == n_ia32_l_Sbb_subtrahend, n_Sbb_subtrahend)
823 COMPILETIME_ASSERT(n_ia32_l_binop_eflags == n_ia32_l_Sbb_eflags, n_Sbb_eflags)
826 * Construct a binary operation which also consumes the eflags.
828 * @param node The node to transform
829 * @param func The node constructor function
830 * @param flags The match flags
831 * @return The constructor ia32 node
833 static ir_node *gen_binop_flags(ir_node *node, construct_binop_flags_func *func,
836 ir_node *src_block = get_nodes_block(node);
837 ir_node *op1 = get_irn_n(node, n_ia32_l_binop_left);
838 ir_node *op2 = get_irn_n(node, n_ia32_l_binop_right);
839 ir_node *eflags = get_irn_n(node, n_ia32_l_binop_eflags);
841 ir_node *block, *new_node, *new_eflags;
842 ia32_address_mode_t am;
843 ia32_address_t *addr = &am.addr;
845 match_arguments(&am, src_block, op1, op2, eflags, flags);
847 dbgi = get_irn_dbg_info(node);
848 block = be_transform_node(src_block);
849 new_eflags = be_transform_node(eflags);
850 new_node = func(dbgi, current_ir_graph, block, addr->base, addr->index,
851 addr->mem, am.new_op1, am.new_op2, new_eflags);
852 set_am_attributes(new_node, &am);
853 /* we can't use source address mode anymore when using immediates */
854 if (!(flags & match_am_and_immediates) &&
855 (is_ia32_Immediate(am.new_op1) || is_ia32_Immediate(am.new_op2)))
856 set_ia32_am_support(new_node, ia32_am_none);
857 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
859 new_node = fix_mem_proj(new_node, &am);
864 static ir_node *get_fpcw(void)
867 if (initial_fpcw != NULL)
870 fpcw = be_abi_get_ignore_irn(env_cg->birg->abi,
871 &ia32_fp_cw_regs[REG_FPCW]);
872 initial_fpcw = be_transform_node(fpcw);
878 * Construct a standard binary operation, set AM and immediate if required.
880 * @param op1 The first operand
881 * @param op2 The second operand
882 * @param func The node constructor function
883 * @return The constructed ia32 node.
885 static ir_node *gen_binop_x87_float(ir_node *node, ir_node *op1, ir_node *op2,
886 construct_binop_float_func *func)
888 ir_mode *mode = get_irn_mode(node);
890 ir_node *block, *new_block, *new_node;
891 ia32_address_mode_t am;
892 ia32_address_t *addr = &am.addr;
893 ia32_x87_attr_t *attr;
894 /* All operations are considered commutative, because there are reverse
896 match_flags_t flags = match_commutative;
898 /* cannot use address mode with long double on x87 */
899 if (get_mode_size_bits(mode) <= 64)
902 block = get_nodes_block(node);
903 match_arguments(&am, block, op1, op2, NULL, flags);
905 dbgi = get_irn_dbg_info(node);
906 new_block = be_transform_node(block);
907 new_node = func(dbgi, current_ir_graph, new_block,
908 addr->base, addr->index, addr->mem,
909 am.new_op1, am.new_op2, get_fpcw());
910 set_am_attributes(new_node, &am);
912 attr = get_ia32_x87_attr(new_node);
913 attr->attr.data.ins_permuted = am.ins_permuted;
915 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
917 new_node = fix_mem_proj(new_node, &am);
923 * Construct a shift/rotate binary operation, sets AM and immediate if required.
925 * @param op1 The first operand
926 * @param op2 The second operand
927 * @param func The node constructor function
928 * @return The constructed ia32 node.
930 static ir_node *gen_shift_binop(ir_node *node, ir_node *op1, ir_node *op2,
931 construct_shift_func *func,
935 ir_node *block, *new_block, *new_op1, *new_op2, *new_node;
937 assert(! mode_is_float(get_irn_mode(node)));
938 assert(flags & match_immediate);
939 assert((flags & ~(match_mode_neutral | match_immediate)) == 0);
941 if (flags & match_mode_neutral) {
942 op1 = ia32_skip_downconv(op1);
943 new_op1 = be_transform_node(op1);
944 } else if (get_mode_size_bits(get_irn_mode(node)) != 32) {
945 new_op1 = create_upconv(op1, node);
947 new_op1 = be_transform_node(op1);
950 /* the shift amount can be any mode that is bigger than 5 bits, since all
951 * other bits are ignored anyway */
952 while (is_Conv(op2) && get_irn_n_edges(op2) == 1) {
953 ir_node *const op = get_Conv_op(op2);
954 if (mode_is_float(get_irn_mode(op)))
957 assert(get_mode_size_bits(get_irn_mode(op2)) >= 5);
959 new_op2 = create_immediate_or_transform(op2, 0);
961 dbgi = get_irn_dbg_info(node);
962 block = get_nodes_block(node);
963 new_block = be_transform_node(block);
964 new_node = func(dbgi, current_ir_graph, new_block, new_op1, new_op2);
965 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
967 /* lowered shift instruction may have a dependency operand, handle it here */
968 if (get_irn_arity(node) == 3) {
969 /* we have a dependency */
970 ir_node *new_dep = be_transform_node(get_irn_n(node, 2));
971 add_irn_dep(new_node, new_dep);
979 * Construct a standard unary operation, set AM and immediate if required.
981 * @param op The operand
982 * @param func The node constructor function
983 * @return The constructed ia32 node.
985 static ir_node *gen_unop(ir_node *node, ir_node *op, construct_unop_func *func,
989 ir_node *block, *new_block, *new_op, *new_node;
991 assert(flags == 0 || flags == match_mode_neutral);
992 if (flags & match_mode_neutral) {
993 op = ia32_skip_downconv(op);
996 new_op = be_transform_node(op);
997 dbgi = get_irn_dbg_info(node);
998 block = get_nodes_block(node);
999 new_block = be_transform_node(block);
1000 new_node = func(dbgi, current_ir_graph, new_block, new_op);
1002 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
1007 static ir_node *create_lea_from_address(dbg_info *dbgi, ir_node *block,
1008 ia32_address_t *addr)
1010 ir_node *base, *index, *res;
1014 base = ia32_new_NoReg_gp(env_cg);
1016 base = be_transform_node(base);
1019 index = addr->index;
1020 if (index == NULL) {
1021 index = ia32_new_NoReg_gp(env_cg);
1023 index = be_transform_node(index);
1026 res = new_rd_ia32_Lea(dbgi, current_ir_graph, block, base, index);
1027 set_address(res, addr);
1033 * Returns non-zero if a given address mode has a symbolic or
1034 * numerical offset != 0.
1036 static int am_has_immediates(const ia32_address_t *addr)
1038 return addr->offset != 0 || addr->symconst_ent != NULL
1039 || addr->frame_entity || addr->use_frame;
1043 * Creates an ia32 Add.
1045 * @return the created ia32 Add node
1047 static ir_node *gen_Add(ir_node *node)
1049 ir_mode *mode = get_irn_mode(node);
1050 ir_node *op1 = get_Add_left(node);
1051 ir_node *op2 = get_Add_right(node);
1053 ir_node *block, *new_block, *new_node, *add_immediate_op;
1054 ia32_address_t addr;
1055 ia32_address_mode_t am;
1057 if (mode_is_float(mode)) {
1058 if (ia32_cg_config.use_sse2)
1059 return gen_binop(node, op1, op2, new_rd_ia32_xAdd,
1060 match_commutative | match_am);
1062 return gen_binop_x87_float(node, op1, op2, new_rd_ia32_vfadd);
1065 ia32_mark_non_am(node);
1067 op2 = ia32_skip_downconv(op2);
1068 op1 = ia32_skip_downconv(op1);
1072 * 0. Immediate Trees (example Add(Symconst, Const) -> Const)
1073 * 1. Add with immediate -> Lea
1074 * 2. Add with possible source address mode -> Add
1075 * 3. Otherwise -> Lea
1077 memset(&addr, 0, sizeof(addr));
1078 ia32_create_address_mode(&addr, node, /*force=*/1);
1079 add_immediate_op = NULL;
1081 dbgi = get_irn_dbg_info(node);
1082 block = get_nodes_block(node);
1083 new_block = be_transform_node(block);
1086 if (addr.base == NULL && addr.index == NULL) {
1087 ir_graph *irg = current_ir_graph;
1088 new_node = new_rd_ia32_Const(dbgi, irg, new_block, addr.symconst_ent,
1089 addr.symconst_sign, addr.offset);
1090 be_dep_on_frame(new_node);
1091 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
1094 /* add with immediate? */
1095 if (addr.index == NULL) {
1096 add_immediate_op = addr.base;
1097 } else if (addr.base == NULL && addr.scale == 0) {
1098 add_immediate_op = addr.index;
1101 if (add_immediate_op != NULL) {
1102 if (!am_has_immediates(&addr)) {
1103 #ifdef DEBUG_libfirm
1104 ir_fprintf(stderr, "Optimisation warning Add x,0 (%+F) found\n",
1107 return be_transform_node(add_immediate_op);
1110 new_node = create_lea_from_address(dbgi, new_block, &addr);
1111 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
1115 /* test if we can use source address mode */
1116 match_arguments(&am, block, op1, op2, NULL, match_commutative
1117 | match_mode_neutral | match_am | match_immediate | match_try_am);
1119 /* construct an Add with source address mode */
1120 if (am.op_type == ia32_AddrModeS) {
1121 ir_graph *irg = current_ir_graph;
1122 ia32_address_t *am_addr = &am.addr;
1123 new_node = new_rd_ia32_Add(dbgi, irg, new_block, am_addr->base,
1124 am_addr->index, am_addr->mem, am.new_op1,
1126 set_am_attributes(new_node, &am);
1127 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
1129 new_node = fix_mem_proj(new_node, &am);
1134 /* otherwise construct a lea */
1135 new_node = create_lea_from_address(dbgi, new_block, &addr);
1136 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
1141 * Creates an ia32 Mul.
1143 * @return the created ia32 Mul node
1145 static ir_node *gen_Mul(ir_node *node)
1147 ir_node *op1 = get_Mul_left(node);
1148 ir_node *op2 = get_Mul_right(node);
1149 ir_mode *mode = get_irn_mode(node);
1151 if (mode_is_float(mode)) {
1152 if (ia32_cg_config.use_sse2)
1153 return gen_binop(node, op1, op2, new_rd_ia32_xMul,
1154 match_commutative | match_am);
1156 return gen_binop_x87_float(node, op1, op2, new_rd_ia32_vfmul);
1158 return gen_binop(node, op1, op2, new_rd_ia32_IMul,
1159 match_commutative | match_am | match_mode_neutral |
1160 match_immediate | match_am_and_immediates);
1164 * Creates an ia32 Mulh.
1165 * Note: Mul produces a 64Bit result and Mulh returns the upper 32 bit of
1166 * this result while Mul returns the lower 32 bit.
1168 * @return the created ia32 Mulh node
1170 static ir_node *gen_Mulh(ir_node *node)
1172 ir_node *block = get_nodes_block(node);
1173 ir_node *new_block = be_transform_node(block);
1174 dbg_info *dbgi = get_irn_dbg_info(node);
1175 ir_node *op1 = get_Mulh_left(node);
1176 ir_node *op2 = get_Mulh_right(node);
1177 ir_mode *mode = get_irn_mode(node);
1179 ir_node *proj_res_high;
1181 if (mode_is_signed(mode)) {
1182 new_node = gen_binop(node, op1, op2, new_rd_ia32_IMul1OP, match_commutative | match_am);
1183 proj_res_high = new_rd_Proj(dbgi, current_ir_graph, new_block, new_node,
1184 mode_Iu, pn_ia32_IMul1OP_res_high);
1186 new_node = gen_binop(node, op1, op2, new_rd_ia32_Mul, match_commutative | match_am);
1187 proj_res_high = new_rd_Proj(dbgi, current_ir_graph, new_block, new_node,
1188 mode_Iu, pn_ia32_Mul_res_high);
1190 return proj_res_high;
1194 * Creates an ia32 And.
1196 * @return The created ia32 And node
1198 static ir_node *gen_And(ir_node *node)
1200 ir_node *op1 = get_And_left(node);
1201 ir_node *op2 = get_And_right(node);
1202 assert(! mode_is_float(get_irn_mode(node)));
1204 /* is it a zero extension? */
1205 if (is_Const(op2)) {
1206 tarval *tv = get_Const_tarval(op2);
1207 long v = get_tarval_long(tv);
1209 if (v == 0xFF || v == 0xFFFF) {
1210 dbg_info *dbgi = get_irn_dbg_info(node);
1211 ir_node *block = get_nodes_block(node);
1218 assert(v == 0xFFFF);
1221 res = create_I2I_Conv(src_mode, mode_Iu, dbgi, block, op1, node);
1226 return gen_binop(node, op1, op2, new_rd_ia32_And,
1227 match_commutative | match_mode_neutral | match_am
1234 * Creates an ia32 Or.
1236 * @return The created ia32 Or node
1238 static ir_node *gen_Or(ir_node *node)
1240 ir_node *op1 = get_Or_left(node);
1241 ir_node *op2 = get_Or_right(node);
1243 assert (! mode_is_float(get_irn_mode(node)));
1244 return gen_binop(node, op1, op2, new_rd_ia32_Or, match_commutative
1245 | match_mode_neutral | match_am | match_immediate);
1251 * Creates an ia32 Eor.
1253 * @return The created ia32 Eor node
1255 static ir_node *gen_Eor(ir_node *node)
1257 ir_node *op1 = get_Eor_left(node);
1258 ir_node *op2 = get_Eor_right(node);
1260 assert(! mode_is_float(get_irn_mode(node)));
1261 return gen_binop(node, op1, op2, new_rd_ia32_Xor, match_commutative
1262 | match_mode_neutral | match_am | match_immediate);
1267 * Creates an ia32 Sub.
1269 * @return The created ia32 Sub node
1271 static ir_node *gen_Sub(ir_node *node)
1273 ir_node *op1 = get_Sub_left(node);
1274 ir_node *op2 = get_Sub_right(node);
1275 ir_mode *mode = get_irn_mode(node);
1277 if (mode_is_float(mode)) {
1278 if (ia32_cg_config.use_sse2)
1279 return gen_binop(node, op1, op2, new_rd_ia32_xSub, match_am);
1281 return gen_binop_x87_float(node, op1, op2, new_rd_ia32_vfsub);
1284 if (is_Const(op2)) {
1285 ir_fprintf(stderr, "Optimisation warning: found sub with const (%+F)\n",
1289 return gen_binop(node, op1, op2, new_rd_ia32_Sub, match_mode_neutral
1290 | match_am | match_immediate);
1293 static ir_node *transform_AM_mem(ir_graph *const irg, ir_node *const block,
1294 ir_node *const src_val,
1295 ir_node *const src_mem,
1296 ir_node *const am_mem)
1298 if (is_NoMem(am_mem)) {
1299 return be_transform_node(src_mem);
1300 } else if (is_Proj(src_val) &&
1302 get_Proj_pred(src_val) == get_Proj_pred(src_mem)) {
1303 /* avoid memory loop */
1305 } else if (is_Proj(src_val) && is_Sync(src_mem)) {
1306 ir_node *const ptr_pred = get_Proj_pred(src_val);
1307 int const arity = get_Sync_n_preds(src_mem);
1312 NEW_ARR_A(ir_node*, ins, arity + 1);
1314 for (i = arity - 1; i >= 0; --i) {
1315 ir_node *const pred = get_Sync_pred(src_mem, i);
1317 /* avoid memory loop */
1318 if (is_Proj(pred) && get_Proj_pred(pred) == ptr_pred)
1321 ins[n++] = be_transform_node(pred);
1326 return new_r_Sync(irg, block, n, ins);
1330 ins[0] = be_transform_node(src_mem);
1332 return new_r_Sync(irg, block, 2, ins);
1337 * Generates an ia32 DivMod with additional infrastructure for the
1338 * register allocator if needed.
1340 static ir_node *create_Div(ir_node *node)
1342 ir_graph *irg = current_ir_graph;
1343 dbg_info *dbgi = get_irn_dbg_info(node);
1344 ir_node *block = get_nodes_block(node);
1345 ir_node *new_block = be_transform_node(block);
1352 ir_node *sign_extension;
1353 ia32_address_mode_t am;
1354 ia32_address_t *addr = &am.addr;
1356 /* the upper bits have random contents for smaller modes */
1357 switch (get_irn_opcode(node)) {
1359 op1 = get_Div_left(node);
1360 op2 = get_Div_right(node);
1361 mem = get_Div_mem(node);
1362 mode = get_Div_resmode(node);
1365 op1 = get_Mod_left(node);
1366 op2 = get_Mod_right(node);
1367 mem = get_Mod_mem(node);
1368 mode = get_Mod_resmode(node);
1371 op1 = get_DivMod_left(node);
1372 op2 = get_DivMod_right(node);
1373 mem = get_DivMod_mem(node);
1374 mode = get_DivMod_resmode(node);
1377 panic("invalid divmod node %+F", node);
1380 match_arguments(&am, block, op1, op2, NULL, match_am);
1382 /* Beware: We don't need a Sync, if the memory predecessor of the Div node
1383 is the memory of the consumed address. We can have only the second op as address
1384 in Div nodes, so check only op2. */
1385 new_mem = transform_AM_mem(irg, block, op2, mem, addr->mem);
1387 if (mode_is_signed(mode)) {
1388 ir_node *produceval = new_rd_ia32_ProduceVal(dbgi, irg, new_block);
1389 be_dep_on_frame(produceval);
1390 sign_extension = new_rd_ia32_Cltd(dbgi, irg, new_block, am.new_op1,
1393 new_node = new_rd_ia32_IDiv(dbgi, irg, new_block, addr->base,
1394 addr->index, new_mem, am.new_op2,
1395 am.new_op1, sign_extension);
1397 sign_extension = new_rd_ia32_Const(dbgi, irg, new_block, NULL, 0, 0);
1398 be_dep_on_frame(sign_extension);
1400 new_node = new_rd_ia32_Div(dbgi, irg, new_block, addr->base,
1401 addr->index, new_mem, am.new_op2,
1402 am.new_op1, sign_extension);
1405 set_irn_pinned(new_node, get_irn_pinned(node));
1407 set_am_attributes(new_node, &am);
1408 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
1410 new_node = fix_mem_proj(new_node, &am);
1416 static ir_node *gen_Mod(ir_node *node)
1418 return create_Div(node);
1421 static ir_node *gen_Div(ir_node *node)
1423 return create_Div(node);
1426 static ir_node *gen_DivMod(ir_node *node)
1428 return create_Div(node);
1434 * Creates an ia32 floating Div.
1436 * @return The created ia32 xDiv node
1438 static ir_node *gen_Quot(ir_node *node)
1440 ir_node *op1 = get_Quot_left(node);
1441 ir_node *op2 = get_Quot_right(node);
1443 if (ia32_cg_config.use_sse2) {
1444 return gen_binop(node, op1, op2, new_rd_ia32_xDiv, match_am);
1446 return gen_binop_x87_float(node, op1, op2, new_rd_ia32_vfdiv);
1452 * Creates an ia32 Shl.
1454 * @return The created ia32 Shl node
1456 static ir_node *gen_Shl(ir_node *node)
1458 ir_node *left = get_Shl_left(node);
1459 ir_node *right = get_Shl_right(node);
1461 return gen_shift_binop(node, left, right, new_rd_ia32_Shl,
1462 match_mode_neutral | match_immediate);
1466 * Creates an ia32 Shr.
1468 * @return The created ia32 Shr node
1470 static ir_node *gen_Shr(ir_node *node)
1472 ir_node *left = get_Shr_left(node);
1473 ir_node *right = get_Shr_right(node);
1475 return gen_shift_binop(node, left, right, new_rd_ia32_Shr, match_immediate);
1481 * Creates an ia32 Sar.
1483 * @return The created ia32 Shrs node
1485 static ir_node *gen_Shrs(ir_node *node)
1487 ir_node *left = get_Shrs_left(node);
1488 ir_node *right = get_Shrs_right(node);
1489 ir_mode *mode = get_irn_mode(node);
1491 if (is_Const(right) && mode == mode_Is) {
1492 tarval *tv = get_Const_tarval(right);
1493 long val = get_tarval_long(tv);
1495 /* this is a sign extension */
1496 ir_graph *irg = current_ir_graph;
1497 dbg_info *dbgi = get_irn_dbg_info(node);
1498 ir_node *block = be_transform_node(get_nodes_block(node));
1500 ir_node *new_op = be_transform_node(op);
1501 ir_node *pval = new_rd_ia32_ProduceVal(dbgi, irg, block);
1503 be_dep_on_frame(pval);
1504 return new_rd_ia32_Cltd(dbgi, irg, block, new_op, pval);
1508 /* 8 or 16 bit sign extension? */
1509 if (is_Const(right) && is_Shl(left) && mode == mode_Is) {
1510 ir_node *shl_left = get_Shl_left(left);
1511 ir_node *shl_right = get_Shl_right(left);
1512 if (is_Const(shl_right)) {
1513 tarval *tv1 = get_Const_tarval(right);
1514 tarval *tv2 = get_Const_tarval(shl_right);
1515 if (tv1 == tv2 && tarval_is_long(tv1)) {
1516 long val = get_tarval_long(tv1);
1517 if (val == 16 || val == 24) {
1518 dbg_info *dbgi = get_irn_dbg_info(node);
1519 ir_node *block = get_nodes_block(node);
1529 res = create_I2I_Conv(src_mode, mode_Is, dbgi, block,
1538 return gen_shift_binop(node, left, right, new_rd_ia32_Sar, match_immediate);
1544 * Creates an ia32 Rol.
1546 * @param op1 The first operator
1547 * @param op2 The second operator
1548 * @return The created ia32 RotL node
1550 static ir_node *gen_Rol(ir_node *node, ir_node *op1, ir_node *op2)
1552 return gen_shift_binop(node, op1, op2, new_rd_ia32_Rol, match_immediate);
1558 * Creates an ia32 Ror.
1559 * NOTE: There is no RotR with immediate because this would always be a RotL
1560 * "imm-mode_size_bits" which can be pre-calculated.
1562 * @param op1 The first operator
1563 * @param op2 The second operator
1564 * @return The created ia32 RotR node
1566 static ir_node *gen_Ror(ir_node *node, ir_node *op1, ir_node *op2)
1568 return gen_shift_binop(node, op1, op2, new_rd_ia32_Ror, match_immediate);
1574 * Creates an ia32 RotR or RotL (depending on the found pattern).
1576 * @return The created ia32 RotL or RotR node
1578 static ir_node *gen_Rotl(ir_node *node)
1580 ir_node *rotate = NULL;
1581 ir_node *op1 = get_Rotl_left(node);
1582 ir_node *op2 = get_Rotl_right(node);
1584 /* Firm has only RotL, so we are looking for a right (op2)
1585 operand "-e+mode_size_bits" (it's an already modified "mode_size_bits-e",
1586 that means we can create a RotR instead of an Add and a RotL */
1590 ir_node *left = get_Add_left(add);
1591 ir_node *right = get_Add_right(add);
1592 if (is_Const(right)) {
1593 tarval *tv = get_Const_tarval(right);
1594 ir_mode *mode = get_irn_mode(node);
1595 long bits = get_mode_size_bits(mode);
1597 if (is_Minus(left) &&
1598 tarval_is_long(tv) &&
1599 get_tarval_long(tv) == bits &&
1602 DB((dbg, LEVEL_1, "RotL into RotR ... "));
1603 rotate = gen_Ror(node, op1, get_Minus_op(left));
1608 if (rotate == NULL) {
1609 rotate = gen_Rol(node, op1, op2);
1618 * Transforms a Minus node.
1620 * @return The created ia32 Minus node
1622 static ir_node *gen_Minus(ir_node *node)
1624 ir_node *op = get_Minus_op(node);
1625 ir_node *block = be_transform_node(get_nodes_block(node));
1626 ir_graph *irg = current_ir_graph;
1627 dbg_info *dbgi = get_irn_dbg_info(node);
1628 ir_mode *mode = get_irn_mode(node);
1633 if (mode_is_float(mode)) {
1634 ir_node *new_op = be_transform_node(op);
1635 if (ia32_cg_config.use_sse2) {
1636 /* TODO: non-optimal... if we have many xXors, then we should
1637 * rather create a load for the const and use that instead of
1638 * several AM nodes... */
1639 ir_node *noreg_gp = ia32_new_NoReg_gp(env_cg);
1640 ir_node *noreg_xmm = ia32_new_NoReg_xmm(env_cg);
1641 ir_node *nomem = new_rd_NoMem(irg);
1643 new_node = new_rd_ia32_xXor(dbgi, irg, block, noreg_gp, noreg_gp,
1644 nomem, new_op, noreg_xmm);
1646 size = get_mode_size_bits(mode);
1647 ent = ia32_gen_fp_known_const(size == 32 ? ia32_SSIGN : ia32_DSIGN);
1649 set_ia32_am_sc(new_node, ent);
1650 set_ia32_op_type(new_node, ia32_AddrModeS);
1651 set_ia32_ls_mode(new_node, mode);
1653 new_node = new_rd_ia32_vfchs(dbgi, irg, block, new_op);
1656 new_node = gen_unop(node, op, new_rd_ia32_Neg, match_mode_neutral);
1659 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
1665 * Transforms a Not node.
1667 * @return The created ia32 Not node
1669 static ir_node *gen_Not(ir_node *node)
1671 ir_node *op = get_Not_op(node);
1673 assert(get_irn_mode(node) != mode_b); /* should be lowered already */
1674 assert (! mode_is_float(get_irn_mode(node)));
1676 return gen_unop(node, op, new_rd_ia32_Not, match_mode_neutral);
1682 * Transforms an Abs node.
1684 * @return The created ia32 Abs node
1686 static ir_node *gen_Abs(ir_node *node)
1688 ir_node *block = get_nodes_block(node);
1689 ir_node *new_block = be_transform_node(block);
1690 ir_node *op = get_Abs_op(node);
1691 ir_graph *irg = current_ir_graph;
1692 dbg_info *dbgi = get_irn_dbg_info(node);
1693 ir_mode *mode = get_irn_mode(node);
1694 ir_node *noreg_gp = ia32_new_NoReg_gp(env_cg);
1695 ir_node *nomem = new_NoMem();
1701 if (mode_is_float(mode)) {
1702 new_op = be_transform_node(op);
1704 if (ia32_cg_config.use_sse2) {
1705 ir_node *noreg_fp = ia32_new_NoReg_xmm(env_cg);
1706 new_node = new_rd_ia32_xAnd(dbgi,irg, new_block, noreg_gp, noreg_gp,
1707 nomem, new_op, noreg_fp);
1709 size = get_mode_size_bits(mode);
1710 ent = ia32_gen_fp_known_const(size == 32 ? ia32_SABS : ia32_DABS);
1712 set_ia32_am_sc(new_node, ent);
1714 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
1716 set_ia32_op_type(new_node, ia32_AddrModeS);
1717 set_ia32_ls_mode(new_node, mode);
1719 new_node = new_rd_ia32_vfabs(dbgi, irg, new_block, new_op);
1720 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
1723 ir_node *xor, *pval, *sign_extension;
1725 if (get_mode_size_bits(mode) == 32) {
1726 new_op = be_transform_node(op);
1728 new_op = create_I2I_Conv(mode, mode_Is, dbgi, block, op, node);
1731 pval = new_rd_ia32_ProduceVal(dbgi, irg, new_block);
1732 sign_extension = new_rd_ia32_Cltd(dbgi, irg, new_block,
1735 be_dep_on_frame(pval);
1736 SET_IA32_ORIG_NODE(sign_extension,ia32_get_old_node_name(env_cg, node));
1738 xor = new_rd_ia32_Xor(dbgi, irg, new_block, noreg_gp, noreg_gp,
1739 nomem, new_op, sign_extension);
1740 SET_IA32_ORIG_NODE(xor, ia32_get_old_node_name(env_cg, node));
1742 new_node = new_rd_ia32_Sub(dbgi, irg, new_block, noreg_gp, noreg_gp,
1743 nomem, xor, sign_extension);
1744 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
1751 * Create a bt instruction for x & (1 << n) and place it into the block of cmp.
1753 static ir_node *gen_bt(ir_node *cmp, ir_node *x, ir_node *n)
1755 dbg_info *dbgi = get_irn_dbg_info(cmp);
1756 ir_node *block = get_nodes_block(cmp);
1757 ir_node *new_block = be_transform_node(block);
1758 ir_node *op1 = be_transform_node(x);
1759 ir_node *op2 = be_transform_node(n);
1761 return new_rd_ia32_Bt(dbgi, current_ir_graph, new_block, op1, op2);
1765 * Transform a node returning a "flag" result.
1767 * @param node the node to transform
1768 * @param pnc_out the compare mode to use
1770 static ir_node *get_flags_node(ir_node *node, pn_Cmp *pnc_out)
1779 /* we have a Cmp as input */
1780 if (is_Proj(node)) {
1781 ir_node *pred = get_Proj_pred(node);
1783 pn_Cmp pnc = get_Proj_proj(node);
1784 if (ia32_cg_config.use_bt && (pnc == pn_Cmp_Lg || pnc == pn_Cmp_Eq)) {
1785 ir_node *l = get_Cmp_left(pred);
1786 ir_node *r = get_Cmp_right(pred);
1788 ir_node *la = get_And_left(l);
1789 ir_node *ra = get_And_right(l);
1791 ir_node *c = get_Shl_left(la);
1792 if (is_Const_1(c) && (is_Const_0(r) || r == la)) {
1793 /* (1 << n) & ra) */
1794 ir_node *n = get_Shl_right(la);
1795 flags = gen_bt(pred, ra, n);
1796 /* we must generate a Jc/Jnc jump */
1797 pnc = pnc == pn_Cmp_Lg ? pn_Cmp_Lt : pn_Cmp_Ge;
1800 *pnc_out = ia32_pn_Cmp_unsigned | pnc;
1805 ir_node *c = get_Shl_left(ra);
1806 if (is_Const_1(c) && (is_Const_0(r) || r == ra)) {
1807 /* la & (1 << n)) */
1808 ir_node *n = get_Shl_right(ra);
1809 flags = gen_bt(pred, la, n);
1810 /* we must generate a Jc/Jnc jump */
1811 pnc = pnc == pn_Cmp_Lg ? pn_Cmp_Lt : pn_Cmp_Ge;
1814 *pnc_out = ia32_pn_Cmp_unsigned | pnc;
1820 flags = be_transform_node(pred);
1826 /* a mode_b value, we have to compare it against 0 */
1827 dbgi = get_irn_dbg_info(node);
1828 new_block = be_transform_node(get_nodes_block(node));
1829 new_op = be_transform_node(node);
1830 noreg = ia32_new_NoReg_gp(env_cg);
1831 nomem = new_NoMem();
1832 flags = new_rd_ia32_Test(dbgi, current_ir_graph, new_block, noreg, noreg, nomem,
1833 new_op, new_op, /*is_permuted=*/0, /*cmp_unsigned=*/0);
1834 *pnc_out = pn_Cmp_Lg;
1839 * Transforms a Load.
1841 * @return the created ia32 Load node
1843 static ir_node *gen_Load(ir_node *node)
1845 ir_node *old_block = get_nodes_block(node);
1846 ir_node *block = be_transform_node(old_block);
1847 ir_node *ptr = get_Load_ptr(node);
1848 ir_node *mem = get_Load_mem(node);
1849 ir_node *new_mem = be_transform_node(mem);
1852 ir_graph *irg = current_ir_graph;
1853 dbg_info *dbgi = get_irn_dbg_info(node);
1854 ir_node *noreg = ia32_new_NoReg_gp(env_cg);
1855 ir_mode *mode = get_Load_mode(node);
1858 ia32_address_t addr;
1860 /* construct load address */
1861 memset(&addr, 0, sizeof(addr));
1862 ia32_create_address_mode(&addr, ptr, /*force=*/0);
1869 base = be_transform_node(base);
1872 if (index == NULL) {
1875 index = be_transform_node(index);
1878 if (mode_is_float(mode)) {
1879 if (ia32_cg_config.use_sse2) {
1880 new_node = new_rd_ia32_xLoad(dbgi, irg, block, base, index, new_mem,
1882 res_mode = mode_xmm;
1884 new_node = new_rd_ia32_vfld(dbgi, irg, block, base, index, new_mem,
1886 res_mode = mode_vfp;
1889 assert(mode != mode_b);
1891 /* create a conv node with address mode for smaller modes */
1892 if (get_mode_size_bits(mode) < 32) {
1893 new_node = new_rd_ia32_Conv_I2I(dbgi, irg, block, base, index,
1894 new_mem, noreg, mode);
1896 new_node = new_rd_ia32_Load(dbgi, irg, block, base, index, new_mem);
1901 set_irn_pinned(new_node, get_irn_pinned(node));
1902 set_ia32_op_type(new_node, ia32_AddrModeS);
1903 set_ia32_ls_mode(new_node, mode);
1904 set_address(new_node, &addr);
1906 if (get_irn_pinned(node) == op_pin_state_floats) {
1907 add_ia32_flags(new_node, arch_irn_flags_rematerializable);
1910 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
1912 be_dep_on_frame(new_node);
1916 static int use_dest_am(ir_node *block, ir_node *node, ir_node *mem,
1917 ir_node *ptr, ir_node *other)
1924 /* we only use address mode if we're the only user of the load */
1925 if (get_irn_n_edges(node) > 1)
1928 load = get_Proj_pred(node);
1931 if (get_nodes_block(load) != block)
1934 /* store should have the same pointer as the load */
1935 if (get_Load_ptr(load) != ptr)
1938 /* don't do AM if other node inputs depend on the load (via mem-proj) */
1939 if (other != NULL &&
1940 get_nodes_block(other) == block &&
1941 heights_reachable_in_block(heights, other, load)) {
1945 if (prevents_AM(block, load, mem))
1947 /* Store should be attached to the load via mem */
1948 assert(heights_reachable_in_block(heights, mem, load));
1953 static ir_node *dest_am_binop(ir_node *node, ir_node *op1, ir_node *op2,
1954 ir_node *mem, ir_node *ptr, ir_mode *mode,
1955 construct_binop_dest_func *func,
1956 construct_binop_dest_func *func8bit,
1957 match_flags_t flags)
1959 ir_node *src_block = get_nodes_block(node);
1961 ir_node *noreg_gp = ia32_new_NoReg_gp(env_cg);
1962 ir_graph *irg = current_ir_graph;
1969 ia32_address_mode_t am;
1970 ia32_address_t *addr = &am.addr;
1971 memset(&am, 0, sizeof(am));
1973 assert(flags & match_dest_am);
1974 assert(flags & match_immediate); /* there is no destam node without... */
1975 commutative = (flags & match_commutative) != 0;
1977 if (use_dest_am(src_block, op1, mem, ptr, op2)) {
1978 build_address(&am, op1);
1979 new_op = create_immediate_or_transform(op2, 0);
1980 } else if (commutative && use_dest_am(src_block, op2, mem, ptr, op1)) {
1981 build_address(&am, op2);
1982 new_op = create_immediate_or_transform(op1, 0);
1987 if (addr->base == NULL)
1988 addr->base = noreg_gp;
1989 if (addr->index == NULL)
1990 addr->index = noreg_gp;
1991 if (addr->mem == NULL)
1992 addr->mem = new_NoMem();
1994 dbgi = get_irn_dbg_info(node);
1995 block = be_transform_node(src_block);
1996 new_mem = transform_AM_mem(irg, block, am.am_node, mem, addr->mem);
1998 if (get_mode_size_bits(mode) == 8) {
1999 new_node = func8bit(dbgi, irg, block, addr->base, addr->index,
2002 new_node = func(dbgi, irg, block, addr->base, addr->index, new_mem,
2005 set_address(new_node, addr);
2006 set_ia32_op_type(new_node, ia32_AddrModeD);
2007 set_ia32_ls_mode(new_node, mode);
2008 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
2010 be_set_transformed_node(get_Proj_pred(am.mem_proj), new_node);
2011 mem_proj = be_transform_node(am.mem_proj);
2012 be_set_transformed_node(mem_proj ? mem_proj : am.mem_proj, new_node);
2017 static ir_node *dest_am_unop(ir_node *node, ir_node *op, ir_node *mem,
2018 ir_node *ptr, ir_mode *mode,
2019 construct_unop_dest_func *func)
2021 ir_graph *irg = current_ir_graph;
2022 ir_node *src_block = get_nodes_block(node);
2028 ia32_address_mode_t am;
2029 ia32_address_t *addr = &am.addr;
2030 memset(&am, 0, sizeof(am));
2032 if (!use_dest_am(src_block, op, mem, ptr, NULL))
2035 build_address(&am, op);
2037 dbgi = get_irn_dbg_info(node);
2038 block = be_transform_node(src_block);
2039 new_mem = transform_AM_mem(irg, block, am.am_node, mem, addr->mem);
2040 new_node = func(dbgi, irg, block, addr->base, addr->index, new_mem);
2041 set_address(new_node, addr);
2042 set_ia32_op_type(new_node, ia32_AddrModeD);
2043 set_ia32_ls_mode(new_node, mode);
2044 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
2046 be_set_transformed_node(get_Proj_pred(am.mem_proj), new_node);
2047 mem_proj = be_transform_node(am.mem_proj);
2048 be_set_transformed_node(mem_proj ? mem_proj : am.mem_proj, new_node);
2053 static ir_node *try_create_SetMem(ir_node *node, ir_node *ptr, ir_node *mem)
2055 ir_mode *mode = get_irn_mode(node);
2056 ir_node *mux_true = get_Mux_true(node);
2057 ir_node *mux_false = get_Mux_false(node);
2068 ia32_address_t addr;
2070 if (get_mode_size_bits(mode) != 8)
2073 if (is_Const_1(mux_true) && is_Const_0(mux_false)) {
2075 } else if (is_Const_0(mux_true) && is_Const_1(mux_false)) {
2081 build_address_ptr(&addr, ptr, mem);
2083 irg = current_ir_graph;
2084 dbgi = get_irn_dbg_info(node);
2085 block = get_nodes_block(node);
2086 new_block = be_transform_node(block);
2087 cond = get_Mux_sel(node);
2088 flags = get_flags_node(cond, &pnc);
2089 new_mem = be_transform_node(mem);
2090 new_node = new_rd_ia32_SetMem(dbgi, irg, new_block, addr.base,
2091 addr.index, addr.mem, flags, pnc, negated);
2092 set_address(new_node, &addr);
2093 set_ia32_op_type(new_node, ia32_AddrModeD);
2094 set_ia32_ls_mode(new_node, mode);
2095 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
2100 static ir_node *try_create_dest_am(ir_node *node)
2102 ir_node *val = get_Store_value(node);
2103 ir_node *mem = get_Store_mem(node);
2104 ir_node *ptr = get_Store_ptr(node);
2105 ir_mode *mode = get_irn_mode(val);
2106 unsigned bits = get_mode_size_bits(mode);
2111 /* handle only GP modes for now... */
2112 if (!ia32_mode_needs_gp_reg(mode))
2116 /* store must be the only user of the val node */
2117 if (get_irn_n_edges(val) > 1)
2119 /* skip pointless convs */
2121 ir_node *conv_op = get_Conv_op(val);
2122 ir_mode *pred_mode = get_irn_mode(conv_op);
2123 if (!ia32_mode_needs_gp_reg(pred_mode))
2125 if (pred_mode == mode_b || bits <= get_mode_size_bits(pred_mode)) {
2133 /* value must be in the same block */
2134 if (get_nodes_block(node) != get_nodes_block(val))
2137 switch (get_irn_opcode(val)) {
2139 op1 = get_Add_left(val);
2140 op2 = get_Add_right(val);
2141 if (ia32_cg_config.use_incdec) {
2142 if (is_Const_1(op2)) {
2143 new_node = dest_am_unop(val, op1, mem, ptr, mode, new_rd_ia32_IncMem);
2145 } else if (is_Const_Minus_1(op2)) {
2146 new_node = dest_am_unop(val, op1, mem, ptr, mode, new_rd_ia32_DecMem);
2150 new_node = dest_am_binop(val, op1, op2, mem, ptr, mode,
2151 new_rd_ia32_AddMem, new_rd_ia32_AddMem8Bit,
2152 match_dest_am | match_commutative |
2156 op1 = get_Sub_left(val);
2157 op2 = get_Sub_right(val);
2158 if (is_Const(op2)) {
2159 ir_fprintf(stderr, "Optimisation warning: not-normalized sub ,C found\n");
2161 new_node = dest_am_binop(val, op1, op2, mem, ptr, mode,
2162 new_rd_ia32_SubMem, new_rd_ia32_SubMem8Bit,
2163 match_dest_am | match_immediate |
2167 op1 = get_And_left(val);
2168 op2 = get_And_right(val);
2169 new_node = dest_am_binop(val, op1, op2, mem, ptr, mode,
2170 new_rd_ia32_AndMem, new_rd_ia32_AndMem8Bit,
2171 match_dest_am | match_commutative |
2175 op1 = get_Or_left(val);
2176 op2 = get_Or_right(val);
2177 new_node = dest_am_binop(val, op1, op2, mem, ptr, mode,
2178 new_rd_ia32_OrMem, new_rd_ia32_OrMem8Bit,
2179 match_dest_am | match_commutative |
2183 op1 = get_Eor_left(val);
2184 op2 = get_Eor_right(val);
2185 new_node = dest_am_binop(val, op1, op2, mem, ptr, mode,
2186 new_rd_ia32_XorMem, new_rd_ia32_XorMem8Bit,
2187 match_dest_am | match_commutative |
2191 op1 = get_Shl_left(val);
2192 op2 = get_Shl_right(val);
2193 new_node = dest_am_binop(val, op1, op2, mem, ptr, mode,
2194 new_rd_ia32_ShlMem, new_rd_ia32_ShlMem,
2195 match_dest_am | match_immediate);
2198 op1 = get_Shr_left(val);
2199 op2 = get_Shr_right(val);
2200 new_node = dest_am_binop(val, op1, op2, mem, ptr, mode,
2201 new_rd_ia32_ShrMem, new_rd_ia32_ShrMem,
2202 match_dest_am | match_immediate);
2205 op1 = get_Shrs_left(val);
2206 op2 = get_Shrs_right(val);
2207 new_node = dest_am_binop(val, op1, op2, mem, ptr, mode,
2208 new_rd_ia32_SarMem, new_rd_ia32_SarMem,
2209 match_dest_am | match_immediate);
2212 op1 = get_Rotl_left(val);
2213 op2 = get_Rotl_right(val);
2214 new_node = dest_am_binop(val, op1, op2, mem, ptr, mode,
2215 new_rd_ia32_RolMem, new_rd_ia32_RolMem,
2216 match_dest_am | match_immediate);
2218 /* TODO: match ROR patterns... */
2220 new_node = try_create_SetMem(val, ptr, mem);
2223 op1 = get_Minus_op(val);
2224 new_node = dest_am_unop(val, op1, mem, ptr, mode, new_rd_ia32_NegMem);
2227 /* should be lowered already */
2228 assert(mode != mode_b);
2229 op1 = get_Not_op(val);
2230 new_node = dest_am_unop(val, op1, mem, ptr, mode, new_rd_ia32_NotMem);
2236 if (new_node != NULL) {
2237 if (get_irn_pinned(new_node) != op_pin_state_pinned &&
2238 get_irn_pinned(node) == op_pin_state_pinned) {
2239 set_irn_pinned(new_node, op_pin_state_pinned);
2246 static int is_float_to_int_conv(const ir_node *node)
2248 ir_mode *mode = get_irn_mode(node);
2252 if (mode != mode_Is && mode != mode_Hs)
2257 conv_op = get_Conv_op(node);
2258 conv_mode = get_irn_mode(conv_op);
2260 if (!mode_is_float(conv_mode))
2267 * Transform a Store(floatConst).
2269 * @return the created ia32 Store node
2271 static ir_node *gen_float_const_Store(ir_node *node, ir_node *cns)
2273 ir_mode *mode = get_irn_mode(cns);
2274 unsigned size = get_mode_size_bytes(mode);
2275 tarval *tv = get_Const_tarval(cns);
2276 ir_node *block = get_nodes_block(node);
2277 ir_node *new_block = be_transform_node(block);
2278 ir_node *ptr = get_Store_ptr(node);
2279 ir_node *mem = get_Store_mem(node);
2280 ir_graph *irg = current_ir_graph;
2281 dbg_info *dbgi = get_irn_dbg_info(node);
2285 ia32_address_t addr;
2287 assert(size % 4 == 0);
2290 build_address_ptr(&addr, ptr, mem);
2294 get_tarval_sub_bits(tv, ofs) |
2295 (get_tarval_sub_bits(tv, ofs + 1) << 8) |
2296 (get_tarval_sub_bits(tv, ofs + 2) << 16) |
2297 (get_tarval_sub_bits(tv, ofs + 3) << 24);
2298 ir_node *imm = create_Immediate(NULL, 0, val);
2300 ir_node *new_node = new_rd_ia32_Store(dbgi, irg, new_block, addr.base,
2301 addr.index, addr.mem, imm);
2303 set_irn_pinned(new_node, get_irn_pinned(node));
2304 set_ia32_op_type(new_node, ia32_AddrModeD);
2305 set_ia32_ls_mode(new_node, mode_Iu);
2306 set_address(new_node, &addr);
2307 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
2309 ins[i++] = new_node;
2314 } while (size != 0);
2316 return i == 1 ? ins[0] : new_rd_Sync(dbgi, irg, new_block, i, ins);
2320 * Generate a vfist or vfisttp instruction.
2322 static ir_node *gen_vfist(dbg_info *dbgi, ir_graph *irg, ir_node *block, ir_node *base, ir_node *index,
2323 ir_node *mem, ir_node *val, ir_node **fist)
2327 if (ia32_cg_config.use_fisttp) {
2328 /* Note: fisttp ALWAYS pop the tos. We have to ensure here that the value is copied
2329 if other users exists */
2330 const arch_register_class_t *reg_class = &ia32_reg_classes[CLASS_ia32_vfp];
2331 ir_node *vfisttp = new_rd_ia32_vfisttp(dbgi, irg, block, base, index, mem, val);
2332 ir_node *value = new_r_Proj(irg, block, vfisttp, mode_E, pn_ia32_vfisttp_res);
2333 be_new_Keep(reg_class, irg, block, 1, &value);
2335 new_node = new_r_Proj(irg, block, vfisttp, mode_M, pn_ia32_vfisttp_M);
2338 ir_node *trunc_mode = ia32_new_Fpu_truncate(env_cg);
2341 new_node = new_rd_ia32_vfist(dbgi, irg, block, base, index, mem, val, trunc_mode);
2347 * Transforms a normal Store.
2349 * @return the created ia32 Store node
2351 static ir_node *gen_normal_Store(ir_node *node)
2353 ir_node *val = get_Store_value(node);
2354 ir_mode *mode = get_irn_mode(val);
2355 ir_node *block = get_nodes_block(node);
2356 ir_node *new_block = be_transform_node(block);
2357 ir_node *ptr = get_Store_ptr(node);
2358 ir_node *mem = get_Store_mem(node);
2359 ir_graph *irg = current_ir_graph;
2360 dbg_info *dbgi = get_irn_dbg_info(node);
2361 ir_node *noreg = ia32_new_NoReg_gp(env_cg);
2362 ir_node *new_val, *new_node, *store;
2363 ia32_address_t addr;
2365 /* check for destination address mode */
2366 new_node = try_create_dest_am(node);
2367 if (new_node != NULL)
2370 /* construct store address */
2371 memset(&addr, 0, sizeof(addr));
2372 ia32_create_address_mode(&addr, ptr, /*force=*/0);
2374 if (addr.base == NULL) {
2377 addr.base = be_transform_node(addr.base);
2380 if (addr.index == NULL) {
2383 addr.index = be_transform_node(addr.index);
2385 addr.mem = be_transform_node(mem);
2387 if (mode_is_float(mode)) {
2388 /* Convs (and strict-Convs) before stores are unnecessary if the mode
2390 while (is_Conv(val) && mode == get_irn_mode(val)) {
2391 ir_node *op = get_Conv_op(val);
2392 if (!mode_is_float(get_irn_mode(op)))
2396 new_val = be_transform_node(val);
2397 if (ia32_cg_config.use_sse2) {
2398 new_node = new_rd_ia32_xStore(dbgi, irg, new_block, addr.base,
2399 addr.index, addr.mem, new_val);
2401 new_node = new_rd_ia32_vfst(dbgi, irg, new_block, addr.base,
2402 addr.index, addr.mem, new_val, mode);
2405 } else if (!ia32_cg_config.use_sse2 && is_float_to_int_conv(val)) {
2406 val = get_Conv_op(val);
2408 /* TODO: is this optimisation still necessary at all (middleend)? */
2409 /* We can skip ALL float->float up-Convs (and strict-up-Convs) before stores. */
2410 while (is_Conv(val)) {
2411 ir_node *op = get_Conv_op(val);
2412 if (!mode_is_float(get_irn_mode(op)))
2414 if (get_mode_size_bits(get_irn_mode(op)) > get_mode_size_bits(get_irn_mode(val)))
2418 new_val = be_transform_node(val);
2419 new_node = gen_vfist(dbgi, irg, new_block, addr.base, addr.index, addr.mem, new_val, &store);
2421 new_val = create_immediate_or_transform(val, 0);
2422 assert(mode != mode_b);
2424 if (get_mode_size_bits(mode) == 8) {
2425 new_node = new_rd_ia32_Store8Bit(dbgi, irg, new_block, addr.base,
2426 addr.index, addr.mem, new_val);
2428 new_node = new_rd_ia32_Store(dbgi, irg, new_block, addr.base,
2429 addr.index, addr.mem, new_val);
2434 set_irn_pinned(store, get_irn_pinned(node));
2435 set_ia32_op_type(store, ia32_AddrModeD);
2436 set_ia32_ls_mode(store, mode);
2438 set_address(store, &addr);
2439 SET_IA32_ORIG_NODE(store, ia32_get_old_node_name(env_cg, node));
2445 * Transforms a Store.
2447 * @return the created ia32 Store node
2449 static ir_node *gen_Store(ir_node *node)
2451 ir_node *val = get_Store_value(node);
2452 ir_mode *mode = get_irn_mode(val);
2454 if (mode_is_float(mode) && is_Const(val)) {
2457 /* we are storing a floating point constant */
2458 if (ia32_cg_config.use_sse2) {
2459 transform = !is_simple_sse_Const(val);
2461 transform = !is_simple_x87_Const(val);
2464 return gen_float_const_Store(node, val);
2466 return gen_normal_Store(node);
2470 * Transforms a Switch.
2472 * @return the created ia32 SwitchJmp node
2474 static ir_node *create_Switch(ir_node *node)
2476 ir_graph *irg = current_ir_graph;
2477 dbg_info *dbgi = get_irn_dbg_info(node);
2478 ir_node *block = be_transform_node(get_nodes_block(node));
2479 ir_node *sel = get_Cond_selector(node);
2480 ir_node *new_sel = be_transform_node(sel);
2481 int switch_min = INT_MAX;
2482 int switch_max = INT_MIN;
2483 long default_pn = get_Cond_defaultProj(node);
2485 const ir_edge_t *edge;
2487 assert(get_mode_size_bits(get_irn_mode(sel)) == 32);
2489 /* determine the smallest switch case value */
2490 foreach_out_edge(node, edge) {
2491 ir_node *proj = get_edge_src_irn(edge);
2492 long pn = get_Proj_proj(proj);
2493 if (pn == default_pn)
2496 if (pn < switch_min)
2498 if (pn > switch_max)
2502 if ((unsigned) (switch_max - switch_min) > 256000) {
2503 panic("Size of switch %+F bigger than 256000", node);
2506 if (switch_min != 0) {
2507 ir_node *noreg = ia32_new_NoReg_gp(env_cg);
2509 /* if smallest switch case is not 0 we need an additional sub */
2510 new_sel = new_rd_ia32_Lea(dbgi, irg, block, new_sel, noreg);
2511 add_ia32_am_offs_int(new_sel, -switch_min);
2512 set_ia32_op_type(new_sel, ia32_AddrModeS);
2514 SET_IA32_ORIG_NODE(new_sel, ia32_get_old_node_name(env_cg, node));
2517 new_node = new_rd_ia32_SwitchJmp(dbgi, irg, block, new_sel, default_pn);
2518 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
2524 * Transform a Cond node.
2526 static ir_node *gen_Cond(ir_node *node)
2528 ir_node *block = get_nodes_block(node);
2529 ir_node *new_block = be_transform_node(block);
2530 ir_graph *irg = current_ir_graph;
2531 dbg_info *dbgi = get_irn_dbg_info(node);
2532 ir_node *sel = get_Cond_selector(node);
2533 ir_mode *sel_mode = get_irn_mode(sel);
2534 ir_node *flags = NULL;
2538 if (sel_mode != mode_b) {
2539 return create_Switch(node);
2542 /* we get flags from a Cmp */
2543 flags = get_flags_node(sel, &pnc);
2545 new_node = new_rd_ia32_Jcc(dbgi, irg, new_block, flags, pnc);
2546 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
2551 static ir_node *gen_be_Copy(ir_node *node)
2553 ir_node *new_node = be_duplicate_node(node);
2554 ir_mode *mode = get_irn_mode(new_node);
2556 if (ia32_mode_needs_gp_reg(mode)) {
2557 set_irn_mode(new_node, mode_Iu);
2563 static ir_node *create_Fucom(ir_node *node)
2565 ir_graph *irg = current_ir_graph;
2566 dbg_info *dbgi = get_irn_dbg_info(node);
2567 ir_node *block = get_nodes_block(node);
2568 ir_node *new_block = be_transform_node(block);
2569 ir_node *left = get_Cmp_left(node);
2570 ir_node *new_left = be_transform_node(left);
2571 ir_node *right = get_Cmp_right(node);
2575 if (ia32_cg_config.use_fucomi) {
2576 new_right = be_transform_node(right);
2577 new_node = new_rd_ia32_vFucomi(dbgi, irg, new_block, new_left,
2579 set_ia32_commutative(new_node);
2580 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
2582 if (ia32_cg_config.use_ftst && is_Const_0(right)) {
2583 new_node = new_rd_ia32_vFtstFnstsw(dbgi, irg, new_block, new_left,
2586 new_right = be_transform_node(right);
2587 new_node = new_rd_ia32_vFucomFnstsw(dbgi, irg, new_block, new_left,
2591 set_ia32_commutative(new_node);
2593 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
2595 new_node = new_rd_ia32_Sahf(dbgi, irg, new_block, new_node);
2596 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
2602 static ir_node *create_Ucomi(ir_node *node)
2604 ir_graph *irg = current_ir_graph;
2605 dbg_info *dbgi = get_irn_dbg_info(node);
2606 ir_node *src_block = get_nodes_block(node);
2607 ir_node *new_block = be_transform_node(src_block);
2608 ir_node *left = get_Cmp_left(node);
2609 ir_node *right = get_Cmp_right(node);
2611 ia32_address_mode_t am;
2612 ia32_address_t *addr = &am.addr;
2614 match_arguments(&am, src_block, left, right, NULL,
2615 match_commutative | match_am);
2617 new_node = new_rd_ia32_Ucomi(dbgi, irg, new_block, addr->base, addr->index,
2618 addr->mem, am.new_op1, am.new_op2,
2620 set_am_attributes(new_node, &am);
2622 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
2624 new_node = fix_mem_proj(new_node, &am);
2630 * helper function: checks whether all Cmp projs are Lg or Eq which is needed
2631 * to fold an and into a test node
2633 static bool can_fold_test_and(ir_node *node)
2635 const ir_edge_t *edge;
2637 /** we can only have eq and lg projs */
2638 foreach_out_edge(node, edge) {
2639 ir_node *proj = get_edge_src_irn(edge);
2640 pn_Cmp pnc = get_Proj_proj(proj);
2641 if (pnc != pn_Cmp_Eq && pnc != pn_Cmp_Lg)
2649 * returns true if it is assured, that the upper bits of a node are "clean"
2650 * which means for a 16 or 8 bit value, that the upper bits in the register
2651 * are 0 for unsigned and a copy of the last significant bit for signed
2654 static bool upper_bits_clean(ir_node *transformed_node, ir_mode *mode)
2656 assert(ia32_mode_needs_gp_reg(mode));
2657 if (get_mode_size_bits(mode) >= 32)
2660 if (is_Proj(transformed_node))
2661 return upper_bits_clean(get_Proj_pred(transformed_node), mode);
2663 if (is_ia32_Conv_I2I(transformed_node)
2664 || is_ia32_Conv_I2I8Bit(transformed_node)) {
2665 ir_mode *smaller_mode = get_ia32_ls_mode(transformed_node);
2666 if (mode_is_signed(smaller_mode) != mode_is_signed(mode))
2668 if (get_mode_size_bits(smaller_mode) > get_mode_size_bits(mode))
2674 if (is_ia32_Shr(transformed_node) && !mode_is_signed(mode)) {
2675 ir_node *right = get_irn_n(transformed_node, n_ia32_Shr_count);
2676 if (is_ia32_Immediate(right) || is_ia32_Const(right)) {
2677 const ia32_immediate_attr_t *attr
2678 = get_ia32_immediate_attr_const(right);
2679 if (attr->symconst == 0
2680 && (unsigned) attr->offset >= (32 - get_mode_size_bits(mode))) {
2684 return upper_bits_clean(get_irn_n(transformed_node, n_ia32_Shr_val), mode);
2687 if (is_ia32_And(transformed_node) && !mode_is_signed(mode)) {
2688 ir_node *right = get_irn_n(transformed_node, n_ia32_And_right);
2689 if (is_ia32_Immediate(right) || is_ia32_Const(right)) {
2690 const ia32_immediate_attr_t *attr
2691 = get_ia32_immediate_attr_const(right);
2692 if (attr->symconst == 0
2693 && (unsigned) attr->offset
2694 <= (0xffffffff >> (32 - get_mode_size_bits(mode)))) {
2701 /* TODO recurse on Or, Xor, ... if appropriate? */
2703 if (is_ia32_Immediate(transformed_node)
2704 || is_ia32_Const(transformed_node)) {
2705 const ia32_immediate_attr_t *attr
2706 = get_ia32_immediate_attr_const(transformed_node);
2707 if (mode_is_signed(mode)) {
2708 long shifted = attr->offset >> (get_mode_size_bits(mode) - 1);
2709 if (shifted == 0 || shifted == -1)
2712 unsigned long shifted = (unsigned long) attr->offset;
2713 shifted >>= get_mode_size_bits(mode);
2723 * Generate code for a Cmp.
2725 static ir_node *gen_Cmp(ir_node *node)
2727 ir_graph *irg = current_ir_graph;
2728 dbg_info *dbgi = get_irn_dbg_info(node);
2729 ir_node *block = get_nodes_block(node);
2730 ir_node *new_block = be_transform_node(block);
2731 ir_node *left = get_Cmp_left(node);
2732 ir_node *right = get_Cmp_right(node);
2733 ir_mode *cmp_mode = get_irn_mode(left);
2735 ia32_address_mode_t am;
2736 ia32_address_t *addr = &am.addr;
2739 if (mode_is_float(cmp_mode)) {
2740 if (ia32_cg_config.use_sse2) {
2741 return create_Ucomi(node);
2743 return create_Fucom(node);
2747 assert(ia32_mode_needs_gp_reg(cmp_mode));
2749 /* Prefer the Test instruction, when encountering (x & y) ==/!= 0 */
2750 cmp_unsigned = !mode_is_signed(cmp_mode);
2751 if (is_Const_0(right) &&
2753 get_irn_n_edges(left) == 1 &&
2754 can_fold_test_and(node)) {
2755 /* Test(and_left, and_right) */
2756 ir_node *and_left = get_And_left(left);
2757 ir_node *and_right = get_And_right(left);
2759 /* matze: code here used mode instead of cmd_mode, I think it is always
2760 * the same as cmp_mode, but I leave this here to see if this is really
2763 assert(get_irn_mode(and_left) == cmp_mode);
2765 match_arguments(&am, block, and_left, and_right, NULL,
2767 match_am | match_8bit_am | match_16bit_am |
2768 match_am_and_immediates | match_immediate |
2769 match_8bit | match_16bit);
2771 /* use 32bit compare mode if possible since the opcode is smaller */
2772 if (upper_bits_clean(am.new_op1, cmp_mode) &&
2773 upper_bits_clean(am.new_op2, cmp_mode)) {
2774 cmp_mode = mode_is_signed(cmp_mode) ? mode_Is : mode_Iu;
2777 if (get_mode_size_bits(cmp_mode) == 8) {
2778 new_node = new_rd_ia32_Test8Bit(dbgi, irg, new_block, addr->base,
2779 addr->index, addr->mem, am.new_op1,
2780 am.new_op2, am.ins_permuted,
2783 new_node = new_rd_ia32_Test(dbgi, irg, new_block, addr->base,
2784 addr->index, addr->mem, am.new_op1,
2785 am.new_op2, am.ins_permuted,
2789 /* Cmp(left, right) */
2790 match_arguments(&am, block, left, right, NULL,
2791 match_commutative | match_am | match_8bit_am |
2792 match_16bit_am | match_am_and_immediates |
2793 match_immediate | match_8bit | match_16bit);
2794 /* use 32bit compare mode if possible since the opcode is smaller */
2795 if (upper_bits_clean(am.new_op1, cmp_mode) &&
2796 upper_bits_clean(am.new_op2, cmp_mode)) {
2797 cmp_mode = mode_is_signed(cmp_mode) ? mode_Is : mode_Iu;
2800 if (get_mode_size_bits(cmp_mode) == 8) {
2801 new_node = new_rd_ia32_Cmp8Bit(dbgi, irg, new_block, addr->base,
2802 addr->index, addr->mem, am.new_op1,
2803 am.new_op2, am.ins_permuted,
2806 new_node = new_rd_ia32_Cmp(dbgi, irg, new_block, addr->base,
2807 addr->index, addr->mem, am.new_op1,
2808 am.new_op2, am.ins_permuted, cmp_unsigned);
2811 set_am_attributes(new_node, &am);
2812 set_ia32_ls_mode(new_node, cmp_mode);
2814 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
2816 new_node = fix_mem_proj(new_node, &am);
2821 static ir_node *create_CMov(ir_node *node, ir_node *flags, ir_node *new_flags,
2824 ir_graph *irg = current_ir_graph;
2825 dbg_info *dbgi = get_irn_dbg_info(node);
2826 ir_node *block = get_nodes_block(node);
2827 ir_node *new_block = be_transform_node(block);
2828 ir_node *val_true = get_Mux_true(node);
2829 ir_node *val_false = get_Mux_false(node);
2831 match_flags_t match_flags;
2832 ia32_address_mode_t am;
2833 ia32_address_t *addr;
2835 assert(ia32_cg_config.use_cmov);
2836 assert(ia32_mode_needs_gp_reg(get_irn_mode(val_true)));
2840 match_flags = match_commutative | match_am | match_16bit_am |
2843 match_arguments(&am, block, val_false, val_true, flags, match_flags);
2845 new_node = new_rd_ia32_CMov(dbgi, irg, new_block, addr->base, addr->index,
2846 addr->mem, am.new_op1, am.new_op2, new_flags,
2847 am.ins_permuted, pnc);
2848 set_am_attributes(new_node, &am);
2850 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
2852 new_node = fix_mem_proj(new_node, &am);
2858 * Creates a ia32 Setcc instruction.
2860 static ir_node *create_set_32bit(dbg_info *dbgi, ir_node *new_block,
2861 ir_node *flags, pn_Cmp pnc, ir_node *orig_node,
2864 ir_graph *irg = current_ir_graph;
2865 ir_node *noreg = ia32_new_NoReg_gp(env_cg);
2866 ir_node *nomem = new_NoMem();
2867 ir_mode *mode = get_irn_mode(orig_node);
2870 new_node = new_rd_ia32_Set(dbgi, irg, new_block, flags, pnc, ins_permuted);
2871 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, orig_node));
2873 /* we might need to conv the result up */
2874 if (get_mode_size_bits(mode) > 8) {
2875 new_node = new_rd_ia32_Conv_I2I8Bit(dbgi, irg, new_block, noreg, noreg,
2876 nomem, new_node, mode_Bu);
2877 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, orig_node));
2884 * Create instruction for an unsigned Difference or Zero.
2886 static ir_node *create_Doz(ir_node *psi, ir_node *a, ir_node *b)
2888 ir_graph *irg = current_ir_graph;
2889 ir_mode *mode = get_irn_mode(psi);
2890 ir_node *new_node, *sub, *sbb, *eflags, *block, *noreg, *tmpreg, *nomem;
2893 new_node = gen_binop(psi, a, b, new_rd_ia32_Sub,
2894 match_mode_neutral | match_am | match_immediate | match_two_users);
2896 block = get_nodes_block(new_node);
2898 if (is_Proj(new_node)) {
2899 sub = get_Proj_pred(new_node);
2900 assert(is_ia32_Sub(sub));
2903 set_irn_mode(sub, mode_T);
2904 new_node = new_rd_Proj(NULL, irg, block, sub, mode, pn_ia32_res);
2906 eflags = new_rd_Proj(NULL, irg, block, sub, mode_Iu, pn_ia32_Sub_flags);
2908 dbgi = get_irn_dbg_info(psi);
2909 noreg = ia32_new_NoReg_gp(env_cg);
2910 tmpreg = new_rd_ia32_ProduceVal(dbgi, irg, block);
2911 nomem = new_NoMem();
2912 sbb = new_rd_ia32_Sbb(dbgi, irg, block, noreg, noreg, nomem, tmpreg, tmpreg, eflags);
2914 new_node = new_rd_ia32_And(dbgi, irg, block, noreg, noreg, nomem, new_node, sbb);
2915 set_ia32_commutative(new_node);
2920 * Transforms a Mux node into CMov.
2922 * @return The transformed node.
2924 static ir_node *gen_Mux(ir_node *node)
2926 dbg_info *dbgi = get_irn_dbg_info(node);
2927 ir_node *block = get_nodes_block(node);
2928 ir_node *new_block = be_transform_node(block);
2929 ir_node *mux_true = get_Mux_true(node);
2930 ir_node *mux_false = get_Mux_false(node);
2931 ir_node *cond = get_Mux_sel(node);
2932 ir_mode *mode = get_irn_mode(node);
2935 assert(get_irn_mode(cond) == mode_b);
2937 /* Note: a Mux node uses a Load two times IFF it's used in the compare AND in the result */
2938 if (mode_is_float(mode)) {
2939 ir_node *cmp = get_Proj_pred(cond);
2940 ir_node *cmp_left = get_Cmp_left(cmp);
2941 ir_node *cmp_right = get_Cmp_right(cmp);
2942 pn_Cmp pnc = get_Proj_proj(cond);
2944 if (ia32_cg_config.use_sse2) {
2945 if (pnc == pn_Cmp_Lt || pnc == pn_Cmp_Le) {
2946 if (cmp_left == mux_true && cmp_right == mux_false) {
2947 /* Mux(a <= b, a, b) => MIN */
2948 return gen_binop(node, cmp_left, cmp_right, new_rd_ia32_xMin,
2949 match_commutative | match_am | match_two_users);
2950 } else if (cmp_left == mux_false && cmp_right == mux_true) {
2951 /* Mux(a <= b, b, a) => MAX */
2952 return gen_binop(node, cmp_left, cmp_right, new_rd_ia32_xMax,
2953 match_commutative | match_am | match_two_users);
2955 } else if (pnc == pn_Cmp_Gt || pnc == pn_Cmp_Ge) {
2956 if (cmp_left == mux_true && cmp_right == mux_false) {
2957 /* Mux(a >= b, a, b) => MAX */
2958 return gen_binop(node, cmp_left, cmp_right, new_rd_ia32_xMax,
2959 match_commutative | match_am | match_two_users);
2960 } else if (cmp_left == mux_false && cmp_right == mux_true) {
2961 /* Mux(a >= b, b, a) => MIN */
2962 return gen_binop(node, cmp_left, cmp_right, new_rd_ia32_xMin,
2963 match_commutative | match_am | match_two_users);
2967 panic("cannot transform floating point Mux");
2973 assert(ia32_mode_needs_gp_reg(mode));
2975 if (is_Proj(cond)) {
2976 ir_node *cmp = get_Proj_pred(cond);
2978 ir_node *cmp_left = get_Cmp_left(cmp);
2979 ir_node *cmp_right = get_Cmp_right(cmp);
2980 pn_Cmp pnc = get_Proj_proj(cond);
2982 /* check for unsigned Doz first */
2983 if ((pnc & pn_Cmp_Gt) && !mode_is_signed(mode) &&
2984 is_Const_0(mux_false) && is_Sub(mux_true) &&
2985 get_Sub_left(mux_true) == cmp_left && get_Sub_right(mux_true) == cmp_right) {
2986 /* Mux(a >=u b, a - b, 0) unsigned Doz */
2987 return create_Doz(node, cmp_left, cmp_right);
2988 } else if ((pnc & pn_Cmp_Lt) && !mode_is_signed(mode) &&
2989 is_Const_0(mux_true) && is_Sub(mux_false) &&
2990 get_Sub_left(mux_false) == cmp_left && get_Sub_right(mux_false) == cmp_right) {
2991 /* Mux(a <=u b, 0, a - b) unsigned Doz */
2992 return create_Doz(node, cmp_left, cmp_right);
2997 flags = get_flags_node(cond, &pnc);
2999 if (is_Const(mux_true) && is_Const(mux_false)) {
3000 /* both are const, good */
3001 if (is_Const_1(mux_true) && is_Const_0(mux_false)) {
3002 new_node = create_set_32bit(dbgi, new_block, flags, pnc, node, /*is_premuted=*/0);
3003 } else if (is_Const_0(mux_true) && is_Const_1(mux_false)) {
3004 new_node = create_set_32bit(dbgi, new_block, flags, pnc, node, /*is_premuted=*/1);
3006 /* Not that simple. */
3011 new_node = create_CMov(node, cond, flags, pnc);
3019 * Create a conversion from x87 state register to general purpose.
3021 static ir_node *gen_x87_fp_to_gp(ir_node *node)
3023 ir_node *block = be_transform_node(get_nodes_block(node));
3024 ir_node *op = get_Conv_op(node);
3025 ir_node *new_op = be_transform_node(op);
3026 ia32_code_gen_t *cg = env_cg;
3027 ir_graph *irg = current_ir_graph;
3028 dbg_info *dbgi = get_irn_dbg_info(node);
3029 ir_node *noreg = ia32_new_NoReg_gp(cg);
3030 ir_mode *mode = get_irn_mode(node);
3031 ir_node *fist, *load, *mem;
3033 mem = gen_vfist(dbgi, irg, block, get_irg_frame(irg), noreg, new_NoMem(), new_op, &fist);
3034 set_irn_pinned(fist, op_pin_state_floats);
3035 set_ia32_use_frame(fist);
3036 set_ia32_op_type(fist, ia32_AddrModeD);
3038 assert(get_mode_size_bits(mode) <= 32);
3039 /* exception we can only store signed 32 bit integers, so for unsigned
3040 we store a 64bit (signed) integer and load the lower bits */
3041 if (get_mode_size_bits(mode) == 32 && !mode_is_signed(mode)) {
3042 set_ia32_ls_mode(fist, mode_Ls);
3044 set_ia32_ls_mode(fist, mode_Is);
3046 SET_IA32_ORIG_NODE(fist, ia32_get_old_node_name(cg, node));
3049 load = new_rd_ia32_Load(dbgi, irg, block, get_irg_frame(irg), noreg, mem);
3051 set_irn_pinned(load, op_pin_state_floats);
3052 set_ia32_use_frame(load);
3053 set_ia32_op_type(load, ia32_AddrModeS);
3054 set_ia32_ls_mode(load, mode_Is);
3055 if (get_ia32_ls_mode(fist) == mode_Ls) {
3056 ia32_attr_t *attr = get_ia32_attr(load);
3057 attr->data.need_64bit_stackent = 1;
3059 ia32_attr_t *attr = get_ia32_attr(load);
3060 attr->data.need_32bit_stackent = 1;
3062 SET_IA32_ORIG_NODE(load, ia32_get_old_node_name(cg, node));
3064 return new_r_Proj(irg, block, load, mode_Iu, pn_ia32_Load_res);
3068 * Creates a x87 strict Conv by placing a Store and a Load
3070 static ir_node *gen_x87_strict_conv(ir_mode *tgt_mode, ir_node *node)
3072 ir_node *block = get_nodes_block(node);
3073 ir_graph *irg = current_ir_graph;
3074 dbg_info *dbgi = get_irn_dbg_info(node);
3075 ir_node *noreg = ia32_new_NoReg_gp(env_cg);
3076 ir_node *nomem = new_NoMem();
3077 ir_node *frame = get_irg_frame(irg);
3078 ir_node *store, *load;
3081 store = new_rd_ia32_vfst(dbgi, irg, block, frame, noreg, nomem, node,
3083 set_ia32_use_frame(store);
3084 set_ia32_op_type(store, ia32_AddrModeD);
3085 SET_IA32_ORIG_NODE(store, ia32_get_old_node_name(env_cg, node));
3087 load = new_rd_ia32_vfld(dbgi, irg, block, frame, noreg, store,
3089 set_ia32_use_frame(load);
3090 set_ia32_op_type(load, ia32_AddrModeS);
3091 SET_IA32_ORIG_NODE(load, ia32_get_old_node_name(env_cg, node));
3093 new_node = new_r_Proj(irg, block, load, mode_E, pn_ia32_vfld_res);
3098 * Create a conversion from general purpose to x87 register
3100 static ir_node *gen_x87_gp_to_fp(ir_node *node, ir_mode *src_mode)
3102 ir_node *src_block = get_nodes_block(node);
3103 ir_node *block = be_transform_node(src_block);
3104 ir_graph *irg = current_ir_graph;
3105 dbg_info *dbgi = get_irn_dbg_info(node);
3106 ir_node *op = get_Conv_op(node);
3107 ir_node *new_op = NULL;
3111 ir_mode *store_mode;
3117 /* fild can use source AM if the operand is a signed 16bit or 32bit integer */
3118 if (src_mode == mode_Is || src_mode == mode_Hs) {
3119 ia32_address_mode_t am;
3121 match_arguments(&am, src_block, NULL, op, NULL,
3122 match_am | match_try_am | match_16bit | match_16bit_am);
3123 if (am.op_type == ia32_AddrModeS) {
3124 ia32_address_t *addr = &am.addr;
3126 fild = new_rd_ia32_vfild(dbgi, irg, block, addr->base,
3127 addr->index, addr->mem);
3128 new_node = new_r_Proj(irg, block, fild, mode_vfp,
3131 set_am_attributes(fild, &am);
3132 SET_IA32_ORIG_NODE(fild, ia32_get_old_node_name(env_cg, node));
3134 fix_mem_proj(fild, &am);
3139 if (new_op == NULL) {
3140 new_op = be_transform_node(op);
3143 noreg = ia32_new_NoReg_gp(env_cg);
3144 nomem = new_NoMem();
3145 mode = get_irn_mode(op);
3147 /* first convert to 32 bit signed if necessary */
3148 src_bits = get_mode_size_bits(src_mode);
3149 if (src_bits == 8) {
3150 new_op = new_rd_ia32_Conv_I2I8Bit(dbgi, irg, block, noreg, noreg, nomem,
3152 SET_IA32_ORIG_NODE(new_op, ia32_get_old_node_name(env_cg, node));
3154 } else if (src_bits < 32) {
3155 new_op = new_rd_ia32_Conv_I2I(dbgi, irg, block, noreg, noreg, nomem,
3157 SET_IA32_ORIG_NODE(new_op, ia32_get_old_node_name(env_cg, node));
3161 assert(get_mode_size_bits(mode) == 32);
3164 store = new_rd_ia32_Store(dbgi, irg, block, get_irg_frame(irg), noreg, nomem,
3167 set_ia32_use_frame(store);
3168 set_ia32_op_type(store, ia32_AddrModeD);
3169 set_ia32_ls_mode(store, mode_Iu);
3171 /* exception for 32bit unsigned, do a 64bit spill+load */
3172 if (!mode_is_signed(mode)) {
3175 ir_node *zero_const = create_Immediate(NULL, 0, 0);
3177 ir_node *zero_store = new_rd_ia32_Store(dbgi, irg, block,
3178 get_irg_frame(irg), noreg, nomem,
3181 set_ia32_use_frame(zero_store);
3182 set_ia32_op_type(zero_store, ia32_AddrModeD);
3183 add_ia32_am_offs_int(zero_store, 4);
3184 set_ia32_ls_mode(zero_store, mode_Iu);
3189 store = new_rd_Sync(dbgi, irg, block, 2, in);
3190 store_mode = mode_Ls;
3192 store_mode = mode_Is;
3196 fild = new_rd_ia32_vfild(dbgi, irg, block, get_irg_frame(irg), noreg, store);
3198 set_ia32_use_frame(fild);
3199 set_ia32_op_type(fild, ia32_AddrModeS);
3200 set_ia32_ls_mode(fild, store_mode);
3202 new_node = new_r_Proj(irg, block, fild, mode_vfp, pn_ia32_vfild_res);
3208 * Create a conversion from one integer mode into another one
3210 static ir_node *create_I2I_Conv(ir_mode *src_mode, ir_mode *tgt_mode,
3211 dbg_info *dbgi, ir_node *block, ir_node *op,
3214 ir_graph *irg = current_ir_graph;
3215 int src_bits = get_mode_size_bits(src_mode);
3216 int tgt_bits = get_mode_size_bits(tgt_mode);
3217 ir_node *new_block = be_transform_node(block);
3219 ir_mode *smaller_mode;
3221 ia32_address_mode_t am;
3222 ia32_address_t *addr = &am.addr;
3225 if (src_bits < tgt_bits) {
3226 smaller_mode = src_mode;
3227 smaller_bits = src_bits;
3229 smaller_mode = tgt_mode;
3230 smaller_bits = tgt_bits;
3233 #ifdef DEBUG_libfirm
3235 ir_fprintf(stderr, "Optimisation warning: conv after constant %+F\n",
3240 match_arguments(&am, block, NULL, op, NULL,
3241 match_8bit | match_16bit |
3242 match_am | match_8bit_am | match_16bit_am);
3244 if (upper_bits_clean(am.new_op2, smaller_mode)) {
3245 /* unnecessary conv. in theory it shouldn't have been AM */
3246 assert(is_ia32_NoReg_GP(addr->base));
3247 assert(is_ia32_NoReg_GP(addr->index));
3248 assert(is_NoMem(addr->mem));
3249 assert(am.addr.offset == 0);
3250 assert(am.addr.symconst_ent == NULL);
3254 if (smaller_bits == 8) {
3255 new_node = new_rd_ia32_Conv_I2I8Bit(dbgi, irg, new_block, addr->base,
3256 addr->index, addr->mem, am.new_op2,
3259 new_node = new_rd_ia32_Conv_I2I(dbgi, irg, new_block, addr->base,
3260 addr->index, addr->mem, am.new_op2,
3263 set_am_attributes(new_node, &am);
3264 /* match_arguments assume that out-mode = in-mode, this isn't true here
3266 set_ia32_ls_mode(new_node, smaller_mode);
3267 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
3268 new_node = fix_mem_proj(new_node, &am);
3273 * Transforms a Conv node.
3275 * @return The created ia32 Conv node
3277 static ir_node *gen_Conv(ir_node *node)
3279 ir_node *block = get_nodes_block(node);
3280 ir_node *new_block = be_transform_node(block);
3281 ir_node *op = get_Conv_op(node);
3282 ir_node *new_op = NULL;
3283 ir_graph *irg = current_ir_graph;
3284 dbg_info *dbgi = get_irn_dbg_info(node);
3285 ir_mode *src_mode = get_irn_mode(op);
3286 ir_mode *tgt_mode = get_irn_mode(node);
3287 int src_bits = get_mode_size_bits(src_mode);
3288 int tgt_bits = get_mode_size_bits(tgt_mode);
3289 ir_node *noreg = ia32_new_NoReg_gp(env_cg);
3290 ir_node *nomem = new_rd_NoMem(irg);
3291 ir_node *res = NULL;
3293 if (src_mode == mode_b) {
3294 assert(mode_is_int(tgt_mode) || mode_is_reference(tgt_mode));
3295 /* nothing to do, we already model bools as 0/1 ints */
3296 return be_transform_node(op);
3299 if (src_mode == tgt_mode) {
3300 if (get_Conv_strict(node)) {
3301 if (ia32_cg_config.use_sse2) {
3302 /* when we are in SSE mode, we can kill all strict no-op conversion */
3303 return be_transform_node(op);
3306 /* this should be optimized already, but who knows... */
3307 DEBUG_ONLY(ir_fprintf(stderr, "Debug warning: conv %+F is pointless\n", node));
3308 DB((dbg, LEVEL_1, "killed Conv(mode, mode) ..."));
3309 return be_transform_node(op);
3313 if (mode_is_float(src_mode)) {
3314 new_op = be_transform_node(op);
3315 /* we convert from float ... */
3316 if (mode_is_float(tgt_mode)) {
3317 if (src_mode == mode_E && tgt_mode == mode_D
3318 && !get_Conv_strict(node)) {
3319 DB((dbg, LEVEL_1, "killed Conv(mode, mode) ..."));
3324 if (ia32_cg_config.use_sse2) {
3325 DB((dbg, LEVEL_1, "create Conv(float, float) ..."));
3326 res = new_rd_ia32_Conv_FP2FP(dbgi, irg, new_block, noreg, noreg,
3328 set_ia32_ls_mode(res, tgt_mode);
3330 if (get_Conv_strict(node)) {
3331 res = gen_x87_strict_conv(tgt_mode, new_op);
3332 SET_IA32_ORIG_NODE(get_Proj_pred(res), ia32_get_old_node_name(env_cg, node));
3335 DB((dbg, LEVEL_1, "killed Conv(float, float) ..."));
3340 DB((dbg, LEVEL_1, "create Conv(float, int) ..."));
3341 if (ia32_cg_config.use_sse2) {
3342 res = new_rd_ia32_Conv_FP2I(dbgi, irg, new_block, noreg, noreg,
3344 set_ia32_ls_mode(res, src_mode);
3346 return gen_x87_fp_to_gp(node);
3350 /* we convert from int ... */
3351 if (mode_is_float(tgt_mode)) {
3353 DB((dbg, LEVEL_1, "create Conv(int, float) ..."));
3354 if (ia32_cg_config.use_sse2) {
3355 new_op = be_transform_node(op);
3356 res = new_rd_ia32_Conv_I2FP(dbgi, irg, new_block, noreg, noreg,
3358 set_ia32_ls_mode(res, tgt_mode);
3360 res = gen_x87_gp_to_fp(node, src_mode);
3361 if (get_Conv_strict(node)) {
3362 /* The strict-Conv is only necessary, if the int mode has more bits
3363 * than the float mantissa */
3364 size_t int_mantissa = get_mode_size_bits(src_mode) - (mode_is_signed(src_mode) ? 1 : 0);
3365 size_t float_mantissa;
3366 /* FIXME There is no way to get the mantissa size of a mode */
3367 switch (get_mode_size_bits(tgt_mode)) {
3368 case 32: float_mantissa = 23 + 1; break; // + 1 for implicit 1
3369 case 64: float_mantissa = 52 + 1; break;
3371 case 96: float_mantissa = 64; break;
3372 default: float_mantissa = 0; break;
3374 if (float_mantissa < int_mantissa) {
3375 res = gen_x87_strict_conv(tgt_mode, res);
3376 SET_IA32_ORIG_NODE(get_Proj_pred(res), ia32_get_old_node_name(env_cg, node));
3381 } else if (tgt_mode == mode_b) {
3382 /* mode_b lowering already took care that we only have 0/1 values */
3383 DB((dbg, LEVEL_1, "omitting unnecessary Conv(%+F, %+F) ...",
3384 src_mode, tgt_mode));
3385 return be_transform_node(op);
3388 if (src_bits == tgt_bits) {
3389 DB((dbg, LEVEL_1, "omitting unnecessary Conv(%+F, %+F) ...",
3390 src_mode, tgt_mode));
3391 return be_transform_node(op);
3394 res = create_I2I_Conv(src_mode, tgt_mode, dbgi, block, op, node);
3402 static ir_node *create_immediate_or_transform(ir_node *node,
3403 char immediate_constraint_type)
3405 ir_node *new_node = try_create_Immediate(node, immediate_constraint_type);
3406 if (new_node == NULL) {
3407 new_node = be_transform_node(node);
3413 * Transforms a FrameAddr into an ia32 Add.
3415 static ir_node *gen_be_FrameAddr(ir_node *node)
3417 ir_node *block = be_transform_node(get_nodes_block(node));
3418 ir_node *op = be_get_FrameAddr_frame(node);
3419 ir_node *new_op = be_transform_node(op);
3420 ir_graph *irg = current_ir_graph;
3421 dbg_info *dbgi = get_irn_dbg_info(node);
3422 ir_node *noreg = ia32_new_NoReg_gp(env_cg);
3425 new_node = new_rd_ia32_Lea(dbgi, irg, block, new_op, noreg);
3426 set_ia32_frame_ent(new_node, arch_get_frame_entity(node));
3427 set_ia32_use_frame(new_node);
3429 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
3435 * In case SSE is used we need to copy the result from XMM0 to FPU TOS before return.
3437 static ir_node *gen_be_Return(ir_node *node)
3439 ir_graph *irg = current_ir_graph;
3440 ir_node *ret_val = get_irn_n(node, be_pos_Return_val);
3441 ir_node *ret_mem = get_irn_n(node, be_pos_Return_mem);
3442 ir_entity *ent = get_irg_entity(irg);
3443 ir_type *tp = get_entity_type(ent);
3448 ir_node *frame, *sse_store, *fld, *mproj, *barrier;
3449 ir_node *new_barrier, *new_ret_val, *new_ret_mem;
3452 int pn_ret_val, pn_ret_mem, arity, i;
3454 assert(ret_val != NULL);
3455 if (be_Return_get_n_rets(node) < 1 || ! ia32_cg_config.use_sse2) {
3456 return be_duplicate_node(node);
3459 res_type = get_method_res_type(tp, 0);
3461 if (! is_Primitive_type(res_type)) {
3462 return be_duplicate_node(node);
3465 mode = get_type_mode(res_type);
3466 if (! mode_is_float(mode)) {
3467 return be_duplicate_node(node);
3470 assert(get_method_n_ress(tp) == 1);
3472 pn_ret_val = get_Proj_proj(ret_val);
3473 pn_ret_mem = get_Proj_proj(ret_mem);
3475 /* get the Barrier */
3476 barrier = get_Proj_pred(ret_val);
3478 /* get result input of the Barrier */
3479 ret_val = get_irn_n(barrier, pn_ret_val);
3480 new_ret_val = be_transform_node(ret_val);
3482 /* get memory input of the Barrier */
3483 ret_mem = get_irn_n(barrier, pn_ret_mem);
3484 new_ret_mem = be_transform_node(ret_mem);
3486 frame = get_irg_frame(irg);
3488 dbgi = get_irn_dbg_info(barrier);
3489 block = be_transform_node(get_nodes_block(barrier));
3491 noreg = ia32_new_NoReg_gp(env_cg);
3493 /* store xmm0 onto stack */
3494 sse_store = new_rd_ia32_xStoreSimple(dbgi, irg, block, frame, noreg,
3495 new_ret_mem, new_ret_val);
3496 set_ia32_ls_mode(sse_store, mode);
3497 set_ia32_op_type(sse_store, ia32_AddrModeD);
3498 set_ia32_use_frame(sse_store);
3500 /* load into x87 register */
3501 fld = new_rd_ia32_vfld(dbgi, irg, block, frame, noreg, sse_store, mode);
3502 set_ia32_op_type(fld, ia32_AddrModeS);
3503 set_ia32_use_frame(fld);
3505 mproj = new_r_Proj(irg, block, fld, mode_M, pn_ia32_vfld_M);
3506 fld = new_r_Proj(irg, block, fld, mode_vfp, pn_ia32_vfld_res);
3508 /* create a new barrier */
3509 arity = get_irn_arity(barrier);
3510 in = alloca(arity * sizeof(in[0]));
3511 for (i = 0; i < arity; ++i) {
3514 if (i == pn_ret_val) {
3516 } else if (i == pn_ret_mem) {
3519 ir_node *in = get_irn_n(barrier, i);
3520 new_in = be_transform_node(in);
3525 new_barrier = new_ir_node(dbgi, irg, block,
3526 get_irn_op(barrier), get_irn_mode(barrier),
3528 copy_node_attr(barrier, new_barrier);
3529 be_duplicate_deps(barrier, new_barrier);
3530 be_set_transformed_node(barrier, new_barrier);
3532 /* transform normally */
3533 return be_duplicate_node(node);
3537 * Transform a be_AddSP into an ia32_SubSP.
3539 static ir_node *gen_be_AddSP(ir_node *node)
3541 ir_node *sz = get_irn_n(node, be_pos_AddSP_size);
3542 ir_node *sp = get_irn_n(node, be_pos_AddSP_old_sp);
3544 return gen_binop(node, sp, sz, new_rd_ia32_SubSP,
3545 match_am | match_immediate);
3549 * Transform a be_SubSP into an ia32_AddSP
3551 static ir_node *gen_be_SubSP(ir_node *node)
3553 ir_node *sz = get_irn_n(node, be_pos_SubSP_size);
3554 ir_node *sp = get_irn_n(node, be_pos_SubSP_old_sp);
3556 return gen_binop(node, sp, sz, new_rd_ia32_AddSP,
3557 match_am | match_immediate);
3561 * Change some phi modes
3563 static ir_node *gen_Phi(ir_node *node)
3565 ir_node *block = be_transform_node(get_nodes_block(node));
3566 ir_graph *irg = current_ir_graph;
3567 dbg_info *dbgi = get_irn_dbg_info(node);
3568 ir_mode *mode = get_irn_mode(node);
3571 if (ia32_mode_needs_gp_reg(mode)) {
3572 /* we shouldn't have any 64bit stuff around anymore */
3573 assert(get_mode_size_bits(mode) <= 32);
3574 /* all integer operations are on 32bit registers now */
3576 } else if (mode_is_float(mode)) {
3577 if (ia32_cg_config.use_sse2) {
3584 /* phi nodes allow loops, so we use the old arguments for now
3585 * and fix this later */
3586 phi = new_ir_node(dbgi, irg, block, op_Phi, mode, get_irn_arity(node),
3587 get_irn_in(node) + 1);
3588 copy_node_attr(node, phi);
3589 be_duplicate_deps(node, phi);
3591 be_enqueue_preds(node);
3599 static ir_node *gen_IJmp(ir_node *node)
3601 ir_node *block = get_nodes_block(node);
3602 ir_node *new_block = be_transform_node(block);
3603 dbg_info *dbgi = get_irn_dbg_info(node);
3604 ir_node *op = get_IJmp_target(node);
3606 ia32_address_mode_t am;
3607 ia32_address_t *addr = &am.addr;
3609 assert(get_irn_mode(op) == mode_P);
3611 match_arguments(&am, block, NULL, op, NULL,
3612 match_am | match_8bit_am | match_16bit_am |
3613 match_immediate | match_8bit | match_16bit);
3615 new_node = new_rd_ia32_IJmp(dbgi, current_ir_graph, new_block,
3616 addr->base, addr->index, addr->mem,
3618 set_am_attributes(new_node, &am);
3619 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
3621 new_node = fix_mem_proj(new_node, &am);
3627 * Transform a Bound node.
3629 static ir_node *gen_Bound(ir_node *node)
3632 ir_node *lower = get_Bound_lower(node);
3633 dbg_info *dbgi = get_irn_dbg_info(node);
3635 if (is_Const_0(lower)) {
3636 /* typical case for Java */
3637 ir_node *sub, *res, *flags, *block;
3638 ir_graph *irg = current_ir_graph;
3640 res = gen_binop(node, get_Bound_index(node), get_Bound_upper(node),
3641 new_rd_ia32_Sub, match_mode_neutral | match_am | match_immediate);
3643 block = get_nodes_block(res);
3644 if (! is_Proj(res)) {
3646 set_irn_mode(sub, mode_T);
3647 res = new_rd_Proj(NULL, irg, block, sub, mode_Iu, pn_ia32_res);
3649 sub = get_Proj_pred(res);
3651 flags = new_rd_Proj(NULL, irg, block, sub, mode_Iu, pn_ia32_Sub_flags);
3652 new_node = new_rd_ia32_Jcc(dbgi, irg, block, flags, pn_Cmp_Lt | ia32_pn_Cmp_unsigned);
3653 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
3655 panic("generic Bound not supported in ia32 Backend");
3661 static ir_node *gen_ia32_l_ShlDep(ir_node *node)
3663 ir_node *left = get_irn_n(node, n_ia32_l_ShlDep_val);
3664 ir_node *right = get_irn_n(node, n_ia32_l_ShlDep_count);
3666 return gen_shift_binop(node, left, right, new_rd_ia32_Shl,
3667 match_immediate | match_mode_neutral);
3670 static ir_node *gen_ia32_l_ShrDep(ir_node *node)
3672 ir_node *left = get_irn_n(node, n_ia32_l_ShrDep_val);
3673 ir_node *right = get_irn_n(node, n_ia32_l_ShrDep_count);
3674 return gen_shift_binop(node, left, right, new_rd_ia32_Shr,
3678 static ir_node *gen_ia32_l_SarDep(ir_node *node)
3680 ir_node *left = get_irn_n(node, n_ia32_l_SarDep_val);
3681 ir_node *right = get_irn_n(node, n_ia32_l_SarDep_count);
3682 return gen_shift_binop(node, left, right, new_rd_ia32_Sar,
3686 static ir_node *gen_ia32_l_Add(ir_node *node)
3688 ir_node *left = get_irn_n(node, n_ia32_l_Add_left);
3689 ir_node *right = get_irn_n(node, n_ia32_l_Add_right);
3690 ir_node *lowered = gen_binop(node, left, right, new_rd_ia32_Add,
3691 match_commutative | match_am | match_immediate |
3692 match_mode_neutral);
3694 if (is_Proj(lowered)) {
3695 lowered = get_Proj_pred(lowered);
3697 assert(is_ia32_Add(lowered));
3698 set_irn_mode(lowered, mode_T);
3704 static ir_node *gen_ia32_l_Adc(ir_node *node)
3706 return gen_binop_flags(node, new_rd_ia32_Adc,
3707 match_commutative | match_am | match_immediate |
3708 match_mode_neutral);
3712 * Transforms a l_MulS into a "real" MulS node.
3714 * @return the created ia32 Mul node
3716 static ir_node *gen_ia32_l_Mul(ir_node *node)
3718 ir_node *left = get_binop_left(node);
3719 ir_node *right = get_binop_right(node);
3721 return gen_binop(node, left, right, new_rd_ia32_Mul,
3722 match_commutative | match_am | match_mode_neutral);
3726 * Transforms a l_IMulS into a "real" IMul1OPS node.
3728 * @return the created ia32 IMul1OP node
3730 static ir_node *gen_ia32_l_IMul(ir_node *node)
3732 ir_node *left = get_binop_left(node);
3733 ir_node *right = get_binop_right(node);
3735 return gen_binop(node, left, right, new_rd_ia32_IMul1OP,
3736 match_commutative | match_am | match_mode_neutral);
3739 static ir_node *gen_ia32_l_Sub(ir_node *node)
3741 ir_node *left = get_irn_n(node, n_ia32_l_Sub_minuend);
3742 ir_node *right = get_irn_n(node, n_ia32_l_Sub_subtrahend);
3743 ir_node *lowered = gen_binop(node, left, right, new_rd_ia32_Sub,
3744 match_am | match_immediate | match_mode_neutral);
3746 if (is_Proj(lowered)) {
3747 lowered = get_Proj_pred(lowered);
3749 assert(is_ia32_Sub(lowered));
3750 set_irn_mode(lowered, mode_T);
3756 static ir_node *gen_ia32_l_Sbb(ir_node *node)
3758 return gen_binop_flags(node, new_rd_ia32_Sbb,
3759 match_am | match_immediate | match_mode_neutral);
3763 * Transforms a l_ShlD/l_ShrD into a ShlD/ShrD. Those nodes have 3 data inputs:
3764 * op1 - target to be shifted
3765 * op2 - contains bits to be shifted into target
3767 * Only op3 can be an immediate.
3769 static ir_node *gen_lowered_64bit_shifts(ir_node *node, ir_node *high,
3770 ir_node *low, ir_node *count)
3772 ir_node *block = get_nodes_block(node);
3773 ir_node *new_block = be_transform_node(block);
3774 ir_graph *irg = current_ir_graph;
3775 dbg_info *dbgi = get_irn_dbg_info(node);
3776 ir_node *new_high = be_transform_node(high);
3777 ir_node *new_low = be_transform_node(low);
3781 /* the shift amount can be any mode that is bigger than 5 bits, since all
3782 * other bits are ignored anyway */
3783 while (is_Conv(count) &&
3784 get_irn_n_edges(count) == 1 &&
3785 mode_is_int(get_irn_mode(count))) {
3786 assert(get_mode_size_bits(get_irn_mode(count)) >= 5);
3787 count = get_Conv_op(count);
3789 new_count = create_immediate_or_transform(count, 0);
3791 if (is_ia32_l_ShlD(node)) {
3792 new_node = new_rd_ia32_ShlD(dbgi, irg, new_block, new_high, new_low,
3795 new_node = new_rd_ia32_ShrD(dbgi, irg, new_block, new_high, new_low,
3798 SET_IA32_ORIG_NODE(new_node, ia32_get_old_node_name(env_cg, node));
3803 static ir_node *gen_ia32_l_ShlD(ir_node *node)
3805 ir_node *high = get_irn_n(node, n_ia32_l_ShlD_val_high);
3806 ir_node *low = get_irn_n(node, n_ia32_l_ShlD_val_low);
3807 ir_node *count = get_irn_n(node, n_ia32_l_ShlD_count);
3808 return gen_lowered_64bit_shifts(node, high, low, count);
3811 static ir_node *gen_ia32_l_ShrD(ir_node *node)
3813 ir_node *high = get_irn_n(node, n_ia32_l_ShrD_val_high);
3814 ir_node *low = get_irn_n(node, n_ia32_l_ShrD_val_low);
3815 ir_node *count = get_irn_n(node, n_ia32_l_ShrD_count);
3816 return gen_lowered_64bit_shifts(node, high, low, count);
3819 static ir_node *gen_ia32_l_LLtoFloat(ir_node *node)
3821 ir_node *src_block = get_nodes_block(node);
3822 ir_node *block = be_transform_node(src_block);
3823 ir_graph *irg = current_ir_graph;
3824 dbg_info *dbgi = get_irn_dbg_info(node);
3825 ir_node *frame = get_irg_frame(irg);
3826 ir_node *noreg = ia32_new_NoReg_gp(env_cg);
3827 ir_node *nomem = new_NoMem();
3828 ir_node *val_low = get_irn_n(node, n_ia32_l_LLtoFloat_val_low);
3829 ir_node *val_high = get_irn_n(node, n_ia32_l_LLtoFloat_val_high);
3830 ir_node *new_val_low = be_transform_node(val_low);
3831 ir_node *new_val_high = be_transform_node(val_high);
3836 ir_node *store_high;
3838 if (!mode_is_signed(get_irn_mode(val_high))) {
3839 panic("unsigned long long -> float not supported yet (%+F)", node);
3843 store_low = new_rd_ia32_Store(dbgi, irg, block, frame, noreg, nomem,
3845 store_high = new_rd_ia32_Store(dbgi, irg, block, frame, noreg, nomem,
3847 SET_IA32_ORIG_NODE(store_low, ia32_get_old_node_name(env_cg, node));
3848 SET_IA32_ORIG_NODE(store_high, ia32_get_old_node_name(env_cg, node));
3850 set_ia32_use_frame(store_low);
3851 set_ia32_use_frame(store_high);
3852 set_ia32_op_type(store_low, ia32_AddrModeD);
3853 set_ia32_op_type(store_high, ia32_AddrModeD);
3854 set_ia32_ls_mode(store_low, mode_Iu);
3855 set_ia32_ls_mode(store_high, mode_Is);
3856 add_ia32_am_offs_int(store_high, 4);
3860 sync = new_rd_Sync(dbgi, irg, block, 2, in);
3863 fild = new_rd_ia32_vfild(dbgi, irg, block, frame, noreg, sync);
3865 set_ia32_use_frame(fild);
3866 set_ia32_op_type(fild, ia32_AddrModeS);
3867 set_ia32_ls_mode(fild, mode_Ls);
3869 SET_IA32_ORIG_NODE(fild, ia32_get_old_node_name(env_cg, node));
3871 return new_r_Proj(irg, block, fild, mode_vfp, pn_ia32_vfild_res);
3874 static ir_node *gen_ia32_l_FloattoLL(ir_node *node)
3876 ir_node *src_block = get_nodes_block(node);
3877 ir_node *block = be_transform_node(src_block);
3878 ir_graph *irg = current_ir_graph;
3879 dbg_info *dbgi = get_irn_dbg_info(node);
3880 ir_node *frame = get_irg_frame(irg);
3881 ir_node *noreg = ia32_new_NoReg_gp(env_cg);
3882 ir_node *nomem = new_NoMem();
3883 ir_node *val = get_irn_n(node, n_ia32_l_FloattoLL_val);
3884 ir_node *new_val = be_transform_node(val);
3885 ir_node *fist, *mem;
3887 mem = gen_vfist(dbgi, irg, block, frame, noreg, nomem, new_val, &fist);
3888 SET_IA32_ORIG_NODE(fist, ia32_get_old_node_name(env_cg, node));
3889 set_ia32_use_frame(fist);
3890 set_ia32_op_type(fist, ia32_AddrModeD);
3891 set_ia32_ls_mode(fist, mode_Ls);
3897 * the BAD transformer.
3899 static ir_node *bad_transform(ir_node *node)
3901 panic("No transform function for %+F available.", node);
3905 static ir_node *gen_Proj_l_FloattoLL(ir_node *node)
3907 ir_graph *irg = current_ir_graph;
3908 ir_node *block = be_transform_node(get_nodes_block(node));
3909 ir_node *pred = get_Proj_pred(node);
3910 ir_node *new_pred = be_transform_node(pred);
3911 ir_node *frame = get_irg_frame(irg);
3912 ir_node *noreg = ia32_new_NoReg_gp(env_cg);
3913 dbg_info *dbgi = get_irn_dbg_info(node);
3914 long pn = get_Proj_proj(node);
3919 load = new_rd_ia32_Load(dbgi, irg, block, frame, noreg, new_pred);
3920 SET_IA32_ORIG_NODE(load, ia32_get_old_node_name(env_cg, node));
3921 set_ia32_use_frame(load);
3922 set_ia32_op_type(load, ia32_AddrModeS);
3923 set_ia32_ls_mode(load, mode_Iu);
3924 /* we need a 64bit stackslot (fist stores 64bit) even though we only load
3925 * 32 bit from it with this particular load */
3926 attr = get_ia32_attr(load);
3927 attr->data.need_64bit_stackent = 1;
3929 if (pn == pn_ia32_l_FloattoLL_res_high) {
3930 add_ia32_am_offs_int(load, 4);
3932 assert(pn == pn_ia32_l_FloattoLL_res_low);
3935 proj = new_r_Proj(irg, block, load, mode_Iu, pn_ia32_Load_res);
3941 * Transform the Projs of an AddSP.
3943 static ir_node *gen_Proj_be_AddSP(ir_node *node)
3945 ir_node *block = be_transform_node(get_nodes_block(node));
3946 ir_node *pred = get_Proj_pred(node);
3947 ir_node *new_pred = be_transform_node(pred);
3948 ir_graph *irg = current_ir_graph;
3949 dbg_info *dbgi = get_irn_dbg_info(node);
3950 long proj = get_Proj_proj(node);
3952 if (proj == pn_be_AddSP_sp) {
3953 ir_node *res = new_rd_Proj(dbgi, irg, block, new_pred, mode_Iu,
3954 pn_ia32_SubSP_stack);
3955 arch_set_irn_register(res, &ia32_gp_regs[REG_ESP]);
3957 } else if (proj == pn_be_AddSP_res) {
3958 return new_rd_Proj(dbgi, irg, block, new_pred, mode_Iu,
3959 pn_ia32_SubSP_addr);
3960 } else if (proj == pn_be_AddSP_M) {
3961 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_ia32_SubSP_M);
3964 panic("No idea how to transform proj->AddSP");
3968 * Transform the Projs of a SubSP.
3970 static ir_node *gen_Proj_be_SubSP(ir_node *node)
3972 ir_node *block = be_transform_node(get_nodes_block(node));
3973 ir_node *pred = get_Proj_pred(node);
3974 ir_node *new_pred = be_transform_node(pred);
3975 ir_graph *irg = current_ir_graph;
3976 dbg_info *dbgi = get_irn_dbg_info(node);
3977 long proj = get_Proj_proj(node);
3979 if (proj == pn_be_SubSP_sp) {
3980 ir_node *res = new_rd_Proj(dbgi, irg, block, new_pred, mode_Iu,
3981 pn_ia32_AddSP_stack);
3982 arch_set_irn_register(res, &ia32_gp_regs[REG_ESP]);
3984 } else if (proj == pn_be_SubSP_M) {
3985 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_ia32_AddSP_M);
3988 panic("No idea how to transform proj->SubSP");
3992 * Transform and renumber the Projs from a Load.
3994 static ir_node *gen_Proj_Load(ir_node *node)
3997 ir_node *block = be_transform_node(get_nodes_block(node));
3998 ir_node *pred = get_Proj_pred(node);
3999 ir_graph *irg = current_ir_graph;
4000 dbg_info *dbgi = get_irn_dbg_info(node);
4001 long proj = get_Proj_proj(node);
4003 /* loads might be part of source address mode matches, so we don't
4004 * transform the ProjMs yet (with the exception of loads whose result is
4007 if (is_Load(pred) && proj == pn_Load_M && get_irn_n_edges(pred) > 1) {
4010 /* this is needed, because sometimes we have loops that are only
4011 reachable through the ProjM */
4012 be_enqueue_preds(node);
4013 /* do it in 2 steps, to silence firm verifier */
4014 res = new_rd_Proj(dbgi, irg, block, pred, mode_M, pn_Load_M);
4015 set_Proj_proj(res, pn_ia32_mem);
4019 /* renumber the proj */
4020 new_pred = be_transform_node(pred);
4021 if (is_ia32_Load(new_pred)) {
4024 return new_rd_Proj(dbgi, irg, block, new_pred, mode_Iu, pn_ia32_Load_res);
4026 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_ia32_Load_M);
4027 case pn_Load_X_regular:
4028 return new_rd_Jmp(dbgi, irg, block);
4029 case pn_Load_X_except:
4030 /* This Load might raise an exception. Mark it. */
4031 set_ia32_exc_label(new_pred, 1);
4032 return new_rd_Proj(dbgi, irg, block, new_pred, mode_X, pn_ia32_Load_X_exc);
4036 } else if (is_ia32_Conv_I2I(new_pred) ||
4037 is_ia32_Conv_I2I8Bit(new_pred)) {
4038 set_irn_mode(new_pred, mode_T);
4039 if (proj == pn_Load_res) {
4040 return new_rd_Proj(dbgi, irg, block, new_pred, mode_Iu, pn_ia32_res);
4041 } else if (proj == pn_Load_M) {
4042 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_ia32_mem);
4044 } else if (is_ia32_xLoad(new_pred)) {
4047 return new_rd_Proj(dbgi, irg, block, new_pred, mode_xmm, pn_ia32_xLoad_res);
4049 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_ia32_xLoad_M);
4050 case pn_Load_X_regular:
4051 return new_rd_Jmp(dbgi, irg, block);
4052 case pn_Load_X_except:
4053 /* This Load might raise an exception. Mark it. */
4054 set_ia32_exc_label(new_pred, 1);
4055 return new_rd_Proj(dbgi, irg, block, new_pred, mode_X, pn_ia32_xLoad_X_exc);
4059 } else if (is_ia32_vfld(new_pred)) {
4062 return new_rd_Proj(dbgi, irg, block, new_pred, mode_vfp, pn_ia32_vfld_res);
4064 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_ia32_vfld_M);
4065 case pn_Load_X_regular:
4066 return new_rd_Jmp(dbgi, irg, block);
4067 case pn_Load_X_except:
4068 /* This Load might raise an exception. Mark it. */
4069 set_ia32_exc_label(new_pred, 1);
4070 return new_rd_Proj(dbgi, irg, block, new_pred, mode_X, pn_ia32_xLoad_X_exc);
4075 /* can happen for ProJMs when source address mode happened for the
4078 /* however it should not be the result proj, as that would mean the
4079 load had multiple users and should not have been used for
4081 if (proj != pn_Load_M) {
4082 panic("internal error: transformed node not a Load");
4084 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, 1);
4087 panic("No idea how to transform proj");
4091 * Transform and renumber the Projs from a DivMod like instruction.
4093 static ir_node *gen_Proj_DivMod(ir_node *node)
4095 ir_node *block = be_transform_node(get_nodes_block(node));
4096 ir_node *pred = get_Proj_pred(node);
4097 ir_node *new_pred = be_transform_node(pred);
4098 ir_graph *irg = current_ir_graph;
4099 dbg_info *dbgi = get_irn_dbg_info(node);
4100 long proj = get_Proj_proj(node);
4102 assert(is_ia32_Div(new_pred) || is_ia32_IDiv(new_pred));
4104 switch (get_irn_opcode(pred)) {
4108 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_ia32_Div_M);
4110 return new_rd_Proj(dbgi, irg, block, new_pred, mode_Iu, pn_ia32_Div_div_res);
4111 case pn_Div_X_regular:
4112 return new_rd_Jmp(dbgi, irg, block);
4113 case pn_Div_X_except:
4114 set_ia32_exc_label(new_pred, 1);
4115 return new_rd_Proj(dbgi, irg, block, new_pred, mode_X, pn_ia32_Div_X_exc);
4123 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_ia32_Div_M);
4125 return new_rd_Proj(dbgi, irg, block, new_pred, mode_Iu, pn_ia32_Div_mod_res);
4126 case pn_Mod_X_except:
4127 set_ia32_exc_label(new_pred, 1);
4128 return new_rd_Proj(dbgi, irg, block, new_pred, mode_X, pn_ia32_Div_X_exc);
4136 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_ia32_Div_M);
4137 case pn_DivMod_res_div:
4138 return new_rd_Proj(dbgi, irg, block, new_pred, mode_Iu, pn_ia32_Div_div_res);
4139 case pn_DivMod_res_mod:
4140 return new_rd_Proj(dbgi, irg, block, new_pred, mode_Iu, pn_ia32_Div_mod_res);
4141 case pn_DivMod_X_regular:
4142 return new_rd_Jmp(dbgi, irg, block);
4143 case pn_DivMod_X_except:
4144 set_ia32_exc_label(new_pred, 1);
4145 return new_rd_Proj(dbgi, irg, block, new_pred, mode_X, pn_ia32_Div_X_exc);
4154 panic("No idea how to transform proj->DivMod");
4158 * Transform and renumber the Projs from a CopyB.
4160 static ir_node *gen_Proj_CopyB(ir_node *node)
4162 ir_node *block = be_transform_node(get_nodes_block(node));
4163 ir_node *pred = get_Proj_pred(node);
4164 ir_node *new_pred = be_transform_node(pred);
4165 ir_graph *irg = current_ir_graph;
4166 dbg_info *dbgi = get_irn_dbg_info(node);
4167 long proj = get_Proj_proj(node);
4170 case pn_CopyB_M_regular:
4171 if (is_ia32_CopyB_i(new_pred)) {
4172 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_ia32_CopyB_i_M);
4173 } else if (is_ia32_CopyB(new_pred)) {
4174 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_ia32_CopyB_M);
4181 panic("No idea how to transform proj->CopyB");
4185 * Transform and renumber the Projs from a Quot.
4187 static ir_node *gen_Proj_Quot(ir_node *node)
4189 ir_node *block = be_transform_node(get_nodes_block(node));
4190 ir_node *pred = get_Proj_pred(node);
4191 ir_node *new_pred = be_transform_node(pred);
4192 ir_graph *irg = current_ir_graph;
4193 dbg_info *dbgi = get_irn_dbg_info(node);
4194 long proj = get_Proj_proj(node);
4198 if (is_ia32_xDiv(new_pred)) {
4199 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_ia32_xDiv_M);
4200 } else if (is_ia32_vfdiv(new_pred)) {
4201 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_ia32_vfdiv_M);
4205 if (is_ia32_xDiv(new_pred)) {
4206 return new_rd_Proj(dbgi, irg, block, new_pred, mode_xmm, pn_ia32_xDiv_res);
4207 } else if (is_ia32_vfdiv(new_pred)) {
4208 return new_rd_Proj(dbgi, irg, block, new_pred, mode_vfp, pn_ia32_vfdiv_res);
4211 case pn_Quot_X_regular:
4212 case pn_Quot_X_except:
4217 panic("No idea how to transform proj->Quot");
4220 static ir_node *gen_be_Call(ir_node *node)
4222 dbg_info *const dbgi = get_irn_dbg_info(node);
4223 ir_graph *const irg = current_ir_graph;
4224 ir_node *const src_block = get_nodes_block(node);
4225 ir_node *const block = be_transform_node(src_block);
4226 ir_node *const src_mem = get_irn_n(node, be_pos_Call_mem);
4227 ir_node *const src_sp = get_irn_n(node, be_pos_Call_sp);
4228 ir_node *const sp = be_transform_node(src_sp);
4229 ir_node *const src_ptr = get_irn_n(node, be_pos_Call_ptr);
4230 ir_node *const noreg = ia32_new_NoReg_gp(env_cg);
4231 ia32_address_mode_t am;
4232 ia32_address_t *const addr = &am.addr;
4237 ir_node * eax = noreg;
4238 ir_node * ecx = noreg;
4239 ir_node * edx = noreg;
4240 unsigned const pop = be_Call_get_pop(node);
4241 ir_type *const call_tp = be_Call_get_type(node);
4243 /* Run the x87 simulator if the call returns a float value */
4244 if (get_method_n_ress(call_tp) > 0) {
4245 ir_type *const res_type = get_method_res_type(call_tp, 0);
4246 ir_mode *const res_mode = get_type_mode(res_type);
4248 if (res_mode != NULL && mode_is_float(res_mode)) {
4249 env_cg->do_x87_sim = 1;
4253 /* We do not want be_Call direct calls */
4254 assert(be_Call_get_entity(node) == NULL);
4256 match_arguments(&am, src_block, NULL, src_ptr, src_mem,
4257 match_am | match_immediate);
4259 i = get_irn_arity(node) - 1;
4260 fpcw = be_transform_node(get_irn_n(node, i--));
4261 for (; i >= be_pos_Call_first_arg; --i) {
4262 arch_register_req_t const *const req = arch_get_register_req(node, i);
4263 ir_node *const reg_parm = be_transform_node(get_irn_n(node, i));
4265 assert(req->type == arch_register_req_type_limited);
4266 assert(req->cls == &ia32_reg_classes[CLASS_ia32_gp]);
4268 switch (*req->limited) {
4269 case 1 << REG_EAX: assert(eax == noreg); eax = reg_parm; break;
4270 case 1 << REG_ECX: assert(ecx == noreg); ecx = reg_parm; break;
4271 case 1 << REG_EDX: assert(edx == noreg); edx = reg_parm; break;
4272 default: panic("Invalid GP register for register parameter");
4276 mem = transform_AM_mem(irg, block, src_ptr, src_mem, addr->mem);
4277 call = new_rd_ia32_Call(dbgi, irg, block, addr->base, addr->index, mem,
4278 am.new_op2, sp, fpcw, eax, ecx, edx, pop, call_tp);
4279 set_am_attributes(call, &am);
4280 call = fix_mem_proj(call, &am);
4282 if (get_irn_pinned(node) == op_pin_state_pinned)
4283 set_irn_pinned(call, op_pin_state_pinned);
4285 SET_IA32_ORIG_NODE(call, ia32_get_old_node_name(env_cg, node));
4289 static ir_node *gen_be_IncSP(ir_node *node)
4291 ir_node *res = be_duplicate_node(node);
4292 be_node_add_flags(res, -1, arch_irn_flags_modify_flags);
4298 * Transform the Projs from a be_Call.
4300 static ir_node *gen_Proj_be_Call(ir_node *node)
4302 ir_node *block = be_transform_node(get_nodes_block(node));
4303 ir_node *call = get_Proj_pred(node);
4304 ir_node *new_call = be_transform_node(call);
4305 ir_graph *irg = current_ir_graph;
4306 dbg_info *dbgi = get_irn_dbg_info(node);
4307 ir_type *method_type = be_Call_get_type(call);
4308 int n_res = get_method_n_ress(method_type);
4309 long proj = get_Proj_proj(node);
4310 ir_mode *mode = get_irn_mode(node);
4312 const arch_register_class_t *cls;
4315 /* The following is kinda tricky: If we're using SSE, then we have to
4316 * move the result value of the call in floating point registers to an
4317 * xmm register, we therefore construct a GetST0 -> xLoad sequence
4318 * after the call, we have to make sure to correctly make the
4319 * MemProj and the result Proj use these 2 nodes
4321 if (proj == pn_be_Call_M_regular) {
4322 // get new node for result, are we doing the sse load/store hack?
4323 ir_node *call_res = be_get_Proj_for_pn(call, pn_be_Call_first_res);
4324 ir_node *call_res_new;
4325 ir_node *call_res_pred = NULL;
4327 if (call_res != NULL) {
4328 call_res_new = be_transform_node(call_res);
4329 call_res_pred = get_Proj_pred(call_res_new);
4332 if (call_res_pred == NULL || is_ia32_Call(call_res_pred)) {
4333 return new_rd_Proj(dbgi, irg, block, new_call, mode_M,
4336 assert(is_ia32_xLoad(call_res_pred));
4337 return new_rd_Proj(dbgi, irg, block, call_res_pred, mode_M,
4341 if (ia32_cg_config.use_sse2 && proj >= pn_be_Call_first_res
4342 && proj < (pn_be_Call_first_res + n_res) && mode_is_float(mode)) {
4344 ir_node *frame = get_irg_frame(irg);
4345 ir_node *noreg = ia32_new_NoReg_gp(env_cg);
4347 ir_node *call_mem = be_get_Proj_for_pn(call, pn_be_Call_M_regular);
4350 /* in case there is no memory output: create one to serialize the copy
4352 call_mem = new_rd_Proj(dbgi, irg, block, new_call, mode_M,
4353 pn_be_Call_M_regular);
4354 call_res = new_rd_Proj(dbgi, irg, block, new_call, mode,
4355 pn_be_Call_first_res);
4357 /* store st(0) onto stack */
4358 fstp = new_rd_ia32_vfst(dbgi, irg, block, frame, noreg, call_mem,
4360 set_ia32_op_type(fstp, ia32_AddrModeD);
4361 set_ia32_use_frame(fstp);
4363 /* load into SSE register */
4364 sse_load = new_rd_ia32_xLoad(dbgi, irg, block, frame, noreg, fstp,
4366 set_ia32_op_type(sse_load, ia32_AddrModeS);
4367 set_ia32_use_frame(sse_load);
4369 sse_load = new_rd_Proj(dbgi, irg, block, sse_load, mode_xmm,
4375 /* transform call modes */
4376 if (mode_is_data(mode)) {
4377 cls = arch_get_irn_reg_class(node, -1);
4381 /* Map from be_Call to ia32_Call proj number */
4382 if (proj == pn_be_Call_sp) {
4383 proj = pn_ia32_Call_stack;
4384 } else if (proj == pn_be_Call_M_regular) {
4385 proj = pn_ia32_Call_M;
4387 arch_register_req_t const *const req = arch_get_register_req(node, BE_OUT_POS(proj));
4388 int const n_outs = get_ia32_n_res(new_call);
4391 assert(proj >= pn_be_Call_first_res);
4392 assert(req->type == arch_register_req_type_limited);
4394 for (i = 0; i < n_outs; ++i) {
4395 arch_register_req_t const *const new_req = get_ia32_out_req(new_call, i);
4397 if (new_req->type != arch_register_req_type_limited ||
4398 new_req->cls != req->cls ||
4399 *new_req->limited != *req->limited)
4408 res = new_rd_Proj(dbgi, irg, block, new_call, mode, proj);
4410 /* TODO arch_set_irn_register() only operates on Projs, need variant with index */
4412 case pn_ia32_Call_stack:
4413 arch_set_irn_register(res, &ia32_gp_regs[REG_ESP]);
4416 case pn_ia32_Call_fpcw:
4417 arch_set_irn_register(res, &ia32_fp_cw_regs[REG_FPCW]);
4425 * Transform the Projs from a Cmp.
4427 static ir_node *gen_Proj_Cmp(ir_node *node)
4429 /* this probably means not all mode_b nodes were lowered... */
4430 panic("trying to directly transform Proj_Cmp %+F (mode_b not lowered?)",
4435 * Transform the Projs from a Bound.
4437 static ir_node *gen_Proj_Bound(ir_node *node)
4439 ir_node *new_node, *block;
4440 ir_node *pred = get_Proj_pred(node);
4442 switch (get_Proj_proj(node)) {
4444 return be_transform_node(get_Bound_mem(pred));
4445 case pn_Bound_X_regular:
4446 new_node = be_transform_node(pred);
4447 block = get_nodes_block(new_node);
4448 return new_r_Proj(current_ir_graph, block, new_node, mode_X, pn_ia32_Jcc_true);
4449 case pn_Bound_X_except:
4450 new_node = be_transform_node(pred);
4451 block = get_nodes_block(new_node);
4452 return new_r_Proj(current_ir_graph, block, new_node, mode_X, pn_ia32_Jcc_false);
4454 return be_transform_node(get_Bound_index(pred));
4456 panic("unsupported Proj from Bound");
4460 static ir_node *gen_Proj_ASM(ir_node *node)
4466 if (get_irn_mode(node) != mode_M)
4467 return be_duplicate_node(node);
4469 pred = get_Proj_pred(node);
4470 new_pred = be_transform_node(pred);
4471 block = get_nodes_block(new_pred);
4472 return new_r_Proj(current_ir_graph, block, new_pred, mode_M,
4473 get_ia32_n_res(new_pred) + 1);
4477 * Transform and potentially renumber Proj nodes.
4479 static ir_node *gen_Proj(ir_node *node)
4481 ir_node *pred = get_Proj_pred(node);
4484 switch (get_irn_opcode(pred)) {
4486 proj = get_Proj_proj(node);
4487 if (proj == pn_Store_M) {
4488 return be_transform_node(pred);
4490 panic("No idea how to transform proj->Store");
4493 return gen_Proj_Load(node);
4495 return gen_Proj_ASM(node);
4499 return gen_Proj_DivMod(node);
4501 return gen_Proj_CopyB(node);
4503 return gen_Proj_Quot(node);
4505 return gen_Proj_be_SubSP(node);
4507 return gen_Proj_be_AddSP(node);
4509 return gen_Proj_be_Call(node);
4511 return gen_Proj_Cmp(node);
4513 return gen_Proj_Bound(node);
4515 proj = get_Proj_proj(node);
4517 case pn_Start_X_initial_exec: {
4518 ir_node *block = get_nodes_block(pred);
4519 ir_node *new_block = be_transform_node(block);
4520 dbg_info *dbgi = get_irn_dbg_info(node);
4521 /* we exchange the ProjX with a jump */
4522 ir_node *jump = new_rd_Jmp(dbgi, current_ir_graph, new_block);
4527 case pn_Start_P_tls:
4528 return gen_Proj_tls(node);
4533 if (is_ia32_l_FloattoLL(pred)) {
4534 return gen_Proj_l_FloattoLL(node);
4536 } else if (!is_ia32_irn(pred)) { // Quick hack for SIMD optimization
4540 ir_mode *mode = get_irn_mode(node);
4541 if (ia32_mode_needs_gp_reg(mode)) {
4542 ir_node *new_pred = be_transform_node(pred);
4543 ir_node *block = be_transform_node(get_nodes_block(node));
4544 ir_node *new_proj = new_r_Proj(current_ir_graph, block, new_pred,
4545 mode_Iu, get_Proj_proj(node));
4546 #ifdef DEBUG_libfirm
4547 new_proj->node_nr = node->node_nr;
4553 return be_duplicate_node(node);
4557 * Enters all transform functions into the generic pointer
4559 static void register_transformers(void)
4563 /* first clear the generic function pointer for all ops */
4564 clear_irp_opcodes_generic_func();
4566 #define GEN(a) { be_transform_func *func = gen_##a; op_##a->ops.generic = (op_func) func; }
4567 #define BAD(a) op_##a->ops.generic = (op_func)bad_transform
4605 /* transform ops from intrinsic lowering */
4617 GEN(ia32_l_LLtoFloat);
4618 GEN(ia32_l_FloattoLL);
4624 /* we should never see these nodes */
4639 /* handle generic backend nodes */
4648 op_Mulh = get_op_Mulh();
4657 * Pre-transform all unknown and noreg nodes.
4659 static void ia32_pretransform_node(void)
4661 ia32_code_gen_t *cg = env_cg;
4663 cg->unknown_gp = be_pre_transform_node(cg->unknown_gp);
4664 cg->unknown_vfp = be_pre_transform_node(cg->unknown_vfp);
4665 cg->unknown_xmm = be_pre_transform_node(cg->unknown_xmm);
4666 cg->noreg_gp = be_pre_transform_node(cg->noreg_gp);
4667 cg->noreg_vfp = be_pre_transform_node(cg->noreg_vfp);
4668 cg->noreg_xmm = be_pre_transform_node(cg->noreg_xmm);
4673 * Walker, checks if all ia32 nodes producing more than one result have their
4674 * Projs, otherwise creates new Projs and keeps them using a be_Keep node.
4676 static void add_missing_keep_walker(ir_node *node, void *data)
4679 unsigned found_projs = 0;
4680 const ir_edge_t *edge;
4681 ir_mode *mode = get_irn_mode(node);
4686 if (!is_ia32_irn(node))
4689 n_outs = get_ia32_n_res(node);
4692 if (is_ia32_SwitchJmp(node))
4695 assert(n_outs < (int) sizeof(unsigned) * 8);
4696 foreach_out_edge(node, edge) {
4697 ir_node *proj = get_edge_src_irn(edge);
4700 /* The node could be kept */
4704 if (get_irn_mode(proj) == mode_M)
4707 pn = get_Proj_proj(proj);
4708 assert(pn < n_outs);
4709 found_projs |= 1 << pn;
4713 /* are keeps missing? */
4715 for (i = 0; i < n_outs; ++i) {
4718 const arch_register_req_t *req;
4719 const arch_register_class_t *cls;
4721 if (found_projs & (1 << i)) {
4725 req = get_ia32_out_req(node, i);
4730 if (cls == &ia32_reg_classes[CLASS_ia32_flags]) {
4734 block = get_nodes_block(node);
4735 in[0] = new_r_Proj(current_ir_graph, block, node,
4736 arch_register_class_mode(cls), i);
4737 if (last_keep != NULL) {
4738 be_Keep_add_node(last_keep, cls, in[0]);
4740 last_keep = be_new_Keep(cls, current_ir_graph, block, 1, in);
4741 if (sched_is_scheduled(node)) {
4742 sched_add_after(node, last_keep);
4749 * Adds missing keeps to nodes. Adds missing Proj nodes for unused outputs
4752 void ia32_add_missing_keeps(ia32_code_gen_t *cg)
4754 ir_graph *irg = be_get_birg_irg(cg->birg);
4755 irg_walk_graph(irg, add_missing_keep_walker, NULL, NULL);
4758 /* do the transformation */
4759 void ia32_transform_graph(ia32_code_gen_t *cg)
4763 register_transformers();
4765 initial_fpcw = NULL;
4767 BE_TIMER_PUSH(t_heights);
4768 heights = heights_new(cg->irg);
4769 BE_TIMER_POP(t_heights);
4770 ia32_calculate_non_address_mode_nodes(cg->birg);
4772 /* the transform phase is not safe for CSE (yet) because several nodes get
4773 * attributes set after their creation */
4774 cse_last = get_opt_cse();
4777 be_transform_graph(cg->birg, ia32_pretransform_node);
4779 set_opt_cse(cse_last);
4781 ia32_free_non_address_mode_nodes();
4782 heights_free(heights);
4786 void ia32_init_transform(void)
4788 FIRM_DBG_REGISTER(dbg, "firm.be.ia32.transform");