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 The codegenerator (transform FIRM into arm FIRM)
23 * @author Oliver Richter, Tobias Gneist, Michael Beck
31 #include "irgraph_t.h"
43 #include "../benode_t.h"
44 #include "../beirg_t.h"
45 #include "../beutil.h"
46 #include "../betranshlp.h"
47 #include "bearch_arm_t.h"
49 #include "arm_nodes_attr.h"
51 #include "arm_transform.h"
52 #include "arm_new_nodes.h"
53 #include "arm_map_regs.h"
55 #include "gen_arm_regalloc_if.h"
60 /** hold the current code generator during transformation */
61 static arm_code_gen_t *env_cg;
63 extern ir_op *get_op_Mulh(void);
66 /****************************************************************************************************
68 * | | | | / _| | | (_)
69 * _ __ ___ __| | ___ | |_ _ __ __ _ _ __ ___| |_ ___ _ __ _ __ ___ __ _| |_ _ ___ _ __
70 * | '_ \ / _ \ / _` |/ _ \ | __| '__/ _` | '_ \/ __| _/ _ \| '__| '_ ` _ \ / _` | __| |/ _ \| '_ \
71 * | | | | (_) | (_| | __/ | |_| | | (_| | | | \__ \ || (_) | | | | | | | | (_| | |_| | (_) | | | |
72 * |_| |_|\___/ \__,_|\___| \__|_| \__,_|_| |_|___/_| \___/|_| |_| |_| |_|\__,_|\__|_|\___/|_| |_|
74 ****************************************************************************************************/
76 static INLINE int mode_needs_gp_reg(ir_mode *mode) {
77 return mode_is_int(mode) || mode_is_reference(mode);
80 typedef struct vals_ {
82 unsigned char values[4];
83 unsigned char shifts[4];
87 static unsigned do_rol(unsigned v, unsigned rol) {
88 return (v << rol) | (v >> (32 - rol));
92 * construct 8bit values and rot amounts for a value
94 static void gen_vals_from_word(unsigned int value, vals *result)
98 memset(result, 0, sizeof(*result));
100 /* special case: we prefer shift amount 0 */
102 result->values[0] = value;
109 unsigned v = do_rol(value, 8) & 0xFFFFFF;
118 shf = (initial + shf - 8) & 0x1F;
119 result->values[result->ops] = v;
120 result->shifts[result->ops] = shf;
123 value ^= do_rol(v, shf) >> initial;
133 * Creates a arm_Const node.
135 static ir_node *create_const_node(dbg_info *dbg, ir_node *block, long value) {
136 ir_mode *mode = mode_Iu;
137 ir_graph *irg = current_ir_graph;
140 if (mode_needs_gp_reg(mode))
142 res = new_rd_arm_Mov_i(dbg, irg, block, mode, value);
143 /* ensure the const is scheduled AFTER the stack frame */
144 add_irn_dep(res, get_irg_frame(irg));
149 * Creates a arm_Const_Neg node.
151 static ir_node *create_const_neg_node(dbg_info *dbg, ir_node *block, long value) {
152 ir_mode *mode = mode_Iu;
153 ir_graph *irg = current_ir_graph;
156 if (mode_needs_gp_reg(mode))
158 res = new_rd_arm_Mvn_i(dbg, irg, block, mode, value);
159 /* ensure the const is scheduled AFTER the stack frame */
160 add_irn_dep(res, get_irg_frame(irg));
164 #define NEW_BINOP_NODE(opname, env, op1, op2) new_rd_arm_##opname(env->dbg, current_ir_graph, env->block, op1, op2, env->mode)
167 * Encodes an immediate with shifter operand
169 static unsigned int arm_encode_imm_w_shift(unsigned int shift, unsigned int immediate) {
170 return immediate | ((shift>>1)<<8);
174 * Decode an immediate with shifter operand
176 unsigned int arm_decode_imm_w_shift(long imm_value) {
177 unsigned l = (unsigned)imm_value;
178 unsigned rol = (l & ~0xFF) >> 7;
180 return do_rol(l & 0xFF, rol);
184 * Creates a possible DAG for an constant.
186 static ir_node *create_const_graph_value(dbg_info *dbg, ir_node *block, unsigned int value) {
190 ir_mode *mode = mode_Iu;
192 gen_vals_from_word(value, &v);
193 gen_vals_from_word(~value, &vn);
195 if (vn.ops < v.ops) {
197 result = create_const_neg_node(dbg, block, arm_encode_imm_w_shift(vn.shifts[0], vn.values[0]));
199 for (cnt = 1; cnt < vn.ops; ++cnt) {
200 long value = arm_encode_imm_w_shift(vn.shifts[cnt], vn.values[cnt]);
201 ir_node *bic_i_node = new_rd_arm_Bic_i(dbg, current_ir_graph, block, result, mode, value);
207 result = create_const_node(dbg, block, arm_encode_imm_w_shift(v.shifts[0], v.values[0]));
209 for (cnt = 1; cnt < v.ops; ++cnt) {
210 long value = arm_encode_imm_w_shift(v.shifts[cnt], v.values[cnt]);
211 ir_node *orr_i_node = new_rd_arm_Or_i(dbg, current_ir_graph, block, result, mode, value);
219 * Create a DAG constructing a given Const.
221 * @param irn a Firm const
223 static ir_node *create_const_graph(ir_node *irn, ir_node *block) {
224 tarval *tv = get_Const_tarval(irn);
225 ir_mode *mode = get_tarval_mode(tv);
228 if (mode_is_reference(mode)) {
229 /* ARM is 32bit, so we can safely convert a reference tarval into Iu */
230 assert(get_mode_size_bits(mode) == get_mode_size_bits(mode_Iu));
231 tv = tarval_convert_to(tv, mode_Iu);
233 value = get_tarval_long(tv);
234 return create_const_graph_value(get_irn_dbg_info(irn), block, value);
238 * Create an And that will mask all upper bits
240 static ir_node *gen_zero_extension(dbg_info *dbg, ir_node *block, ir_node *op, int result_bits) {
241 unsigned mask_bits = (1 << result_bits) - 1;
242 ir_node *mask_node = create_const_graph_value(dbg, block, mask_bits);
243 return new_rd_arm_And(dbg, current_ir_graph, block, op, mask_node, mode_Iu, ARM_SHF_NONE, 0);
247 * Generate code for a sign extension.
249 static ir_node *gen_sign_extension(dbg_info *dbg, ir_node *block, ir_node *op, int result_bits) {
250 ir_graph *irg = current_ir_graph;
251 int shift_width = 32 - result_bits;
252 ir_node *shift_const_node = create_const_graph_value(dbg, block, shift_width);
253 ir_node *lshift_node = new_rd_arm_Shl(dbg, irg, block, op, shift_const_node, mode_Iu);
254 ir_node *rshift_node = new_rd_arm_Shrs(dbg, irg, block, lshift_node, shift_const_node, mode_Iu);
259 * Transforms a Conv node.
261 * @return The created ia32 Conv node
263 static ir_node *gen_Conv(ir_node *node) {
264 ir_node *block = be_transform_node(get_nodes_block(node));
265 ir_node *op = get_Conv_op(node);
266 ir_node *new_op = be_transform_node(op);
267 ir_graph *irg = current_ir_graph;
268 ir_mode *src_mode = get_irn_mode(op);
269 ir_mode *dst_mode = get_irn_mode(node);
270 dbg_info *dbg = get_irn_dbg_info(node);
272 if (src_mode == dst_mode)
275 if (mode_is_float(src_mode) || mode_is_float(dst_mode)) {
276 env_cg->have_fp_insn = 1;
278 if (USE_FPA(env_cg->isa)) {
279 if (mode_is_float(src_mode)) {
280 if (mode_is_float(dst_mode)) {
281 /* from float to float */
282 return new_rd_arm_fpaMvf(dbg, irg, block, new_op, dst_mode);
285 /* from float to int */
286 return new_rd_arm_fpaFix(dbg, irg, block, new_op, dst_mode);
290 /* from int to float */
291 return new_rd_arm_fpaFlt(dbg, irg, block, new_op, dst_mode);
294 else if (USE_VFP(env_cg->isa)) {
295 panic("VFP not supported yet\n");
299 panic("Softfloat not supported yet\n");
303 else { /* complete in gp registers */
304 int src_bits = get_mode_size_bits(src_mode);
305 int dst_bits = get_mode_size_bits(dst_mode);
309 if (is_Load(skip_Proj(op))) {
310 if (src_bits == dst_bits) {
311 /* kill unneccessary conv */
314 /* after a load, the bit size is already converted */
318 if (src_bits == dst_bits) {
319 /* kill unneccessary conv */
321 } else if (dst_bits <= 32 && src_bits <= 32) {
322 if (src_bits < dst_bits) {
329 if (mode_is_signed(min_mode)) {
330 return gen_sign_extension(dbg, block, new_op, min_bits);
332 return gen_zero_extension(dbg, block, new_op, min_bits);
335 panic("Cannot handle Conv %+F->%+F with %d->%d bits\n", src_mode, dst_mode,
343 * Return true if an operand is a shifter operand
345 static int is_shifter_operand(ir_node *n, arm_shift_modifier *pmod) {
346 arm_shift_modifier mod = ARM_SHF_NONE;
349 mod = get_arm_shift_modifier(n);
352 if (mod != ARM_SHF_NONE) {
353 long v = get_arm_imm_value(n);
361 * Creates an ARM Add.
363 * @return the created arm Add node
365 static ir_node *gen_Add(ir_node *node) {
366 ir_node *block = be_transform_node(get_nodes_block(node));
367 ir_node *op1 = get_Add_left(node);
368 ir_node *new_op1 = be_transform_node(op1);
369 ir_node *op2 = get_Add_right(node);
370 ir_node *new_op2 = be_transform_node(op2);
371 ir_mode *mode = get_irn_mode(node);
372 ir_graph *irg = current_ir_graph;
375 arm_shift_modifier mod;
376 dbg_info *dbg = get_irn_dbg_info(node);
378 if (mode_is_float(mode)) {
379 env_cg->have_fp_insn = 1;
380 if (USE_FPA(env_cg->isa)) {
381 if (is_arm_fpaMvf_i(new_op1))
382 return new_rd_arm_fpaAdf_i(dbg, irg, block, new_op2, mode, get_arm_imm_value(new_op1));
383 if (is_arm_fpaMvf_i(new_op2))
384 return new_rd_arm_fpaAdf_i(dbg, irg, block, new_op1, mode, get_arm_imm_value(new_op2));
385 return new_rd_arm_fpaAdf(dbg, irg, block, new_op1, new_op2, mode);
386 } else if (USE_VFP(env_cg->isa)) {
387 assert(mode != mode_E && "IEEE Extended FP not supported");
388 panic("VFP not supported yet\n");
392 panic("Softfloat not supported yet\n");
396 assert(mode_is_data(mode));
399 if (is_arm_Mov_i(new_op1))
400 return new_rd_arm_Add_i(dbg, irg, block, new_op2, mode, get_arm_imm_value(new_op1));
401 if (is_arm_Mov_i(new_op2))
402 return new_rd_arm_Add_i(dbg, irg, block, new_op1, mode, get_arm_imm_value(new_op2));
405 if (is_arm_Mul(new_op1) && get_irn_n_edges(op1) == 1) {
407 new_op2 = get_irn_n(new_op1, 1);
408 new_op1 = get_irn_n(new_op1, 0);
410 return new_rd_arm_Mla(dbg, irg, block, new_op1, new_op2, new_op3, mode);
412 if (is_arm_Mul(new_op2) && get_irn_n_edges(op2) == 1) {
414 new_op1 = get_irn_n(new_op2, 0);
415 new_op2 = get_irn_n(new_op2, 1);
417 return new_rd_arm_Mla(dbg, irg, block, new_op1, new_op2, new_op3, mode);
420 /* is the first a shifter */
421 v = is_shifter_operand(new_op1, &mod);
423 new_op1 = get_irn_n(new_op1, 0);
424 return new_rd_arm_Add(dbg, irg, block, new_op2, new_op1, mode, mod, v);
426 /* is the second a shifter */
427 v = is_shifter_operand(new_op2, &mod);
429 new_op2 = get_irn_n(new_op2, 0);
430 return new_rd_arm_Add(dbg, irg, block, new_op1, new_op2, mode, mod, v);
434 return new_rd_arm_Add(dbg, irg, block, new_op1, new_op2, mode, ARM_SHF_NONE, 0);
439 * Creates an ARM Mul.
441 * @return the created arm Mul node
443 static ir_node *gen_Mul(ir_node *node) {
444 ir_node *block = be_transform_node(get_nodes_block(node));
445 ir_node *op1 = get_Mul_left(node);
446 ir_node *new_op1 = be_transform_node(op1);
447 ir_node *op2 = get_Mul_right(node);
448 ir_node *new_op2 = be_transform_node(op2);
449 ir_mode *mode = get_irn_mode(node);
450 ir_graph *irg = current_ir_graph;
451 dbg_info *dbg = get_irn_dbg_info(node);
453 if (mode_is_float(mode)) {
454 env_cg->have_fp_insn = 1;
455 if (USE_FPA(env_cg->isa)) {
456 if (is_arm_Mov_i(new_op1))
457 return new_rd_arm_fpaMuf_i(dbg, irg, block, new_op2, mode, get_arm_imm_value(new_op1));
458 if (is_arm_Mov_i(new_op2))
459 return new_rd_arm_fpaMuf_i(dbg, irg, block, new_op1, mode, get_arm_imm_value(new_op2));
460 return new_rd_arm_fpaMuf(dbg, irg, block, new_op1, new_op2, mode);
462 else if (USE_VFP(env_cg->isa)) {
463 assert(mode != mode_E && "IEEE Extended FP not supported");
464 panic("VFP not supported yet\n");
468 panic("Softfloat not supported yet\n");
472 assert(mode_is_data(mode));
474 return new_rd_arm_Mul(dbg, irg, block, new_op1, new_op2, mode);
478 * Creates an ARM floating point Div.
480 * @param env The transformation environment
481 * @return the created arm fDiv node
483 static ir_node *gen_Quot(ir_node *node) {
484 ir_node *block = be_transform_node(get_nodes_block(node));
485 ir_node *op1 = get_Quot_left(node);
486 ir_node *new_op1 = be_transform_node(op1);
487 ir_node *op2 = get_Quot_right(node);
488 ir_node *new_op2 = be_transform_node(op2);
489 ir_mode *mode = get_irn_mode(node);
490 dbg_info *dbg = get_irn_dbg_info(node);
492 assert(mode != mode_E && "IEEE Extended FP not supported");
494 env_cg->have_fp_insn = 1;
495 if (USE_FPA(env_cg->isa)) {
496 if (is_arm_Mov_i(new_op1))
497 return new_rd_arm_fpaRdf_i(dbg, current_ir_graph, block, new_op2, mode, get_arm_imm_value(new_op1));
498 if (is_arm_Mov_i(new_op2))
499 return new_rd_arm_fpaDvf_i(dbg, current_ir_graph, block, new_op1, mode, get_arm_imm_value(new_op2));
500 return new_rd_arm_fpaDvf(dbg, current_ir_graph, block, new_op1, new_op2, mode);
501 } else if (USE_VFP(env_cg->isa)) {
502 assert(mode != mode_E && "IEEE Extended FP not supported");
503 panic("VFP not supported yet\n");
506 panic("Softfloat not supported yet\n");
511 #define GEN_INT_OP(op) \
512 ir_node *block = be_transform_node(get_nodes_block(node)); \
513 ir_node *op1 = get_ ## op ## _left(node); \
514 ir_node *new_op1 = be_transform_node(op1); \
515 ir_node *op2 = get_ ## op ## _right(node); \
516 ir_node *new_op2 = be_transform_node(op2); \
517 ir_graph *irg = current_ir_graph; \
518 ir_mode *mode = mode_Iu; \
519 dbg_info *dbg = get_irn_dbg_info(node); \
521 arm_shift_modifier mod; \
523 if (is_arm_Mov_i(new_op1)) \
524 return new_rd_arm_ ## op ## _i(dbg, irg, block, new_op2, mode, get_arm_imm_value(new_op1)); \
525 if (is_arm_Mov_i(new_op2)) \
526 return new_rd_arm_ ## op ## _i(dbg, irg, block, new_op1, mode, get_arm_imm_value(new_op2)); \
527 /* is the first a shifter */ \
528 v = is_shifter_operand(new_op1, &mod); \
530 new_op1 = get_irn_n(new_op1, 0); \
531 return new_rd_arm_ ## op(dbg, irg, block, new_op2, new_op1, mode, mod, v); \
533 /* is the second a shifter */ \
534 v = is_shifter_operand(new_op2, &mod); \
536 new_op2 = get_irn_n(new_op2, 0); \
537 return new_rd_arm_ ## op(dbg, irg, block, new_op1, new_op2, mode, mod, v); \
540 return new_rd_arm_ ## op(dbg, irg, block, new_op1, new_op2, mode, ARM_SHF_NONE, 0) \
543 * Creates an ARM And.
545 * @return the created arm And node
547 static ir_node *gen_And(ir_node *node) {
552 * Creates an ARM Orr.
554 * @param env The transformation environment
555 * @return the created arm Or node
557 static ir_node *gen_Or(ir_node *node) {
562 * Creates an ARM Eor.
564 * @return the created arm Eor node
566 static ir_node *gen_Eor(ir_node *node) {
571 * Creates an ARM Sub.
573 * @return the created arm Sub node
575 static ir_node *gen_Sub(ir_node *node) {
576 ir_node *block = be_transform_node(get_nodes_block(node));
577 ir_node *op1 = get_Sub_left(node);
578 ir_node *new_op1 = be_transform_node(op1);
579 ir_node *op2 = get_Sub_right(node);
580 ir_node *new_op2 = be_transform_node(op2);
581 ir_mode *mode = get_irn_mode(node);
582 ir_graph *irg = current_ir_graph;
583 dbg_info *dbg = get_irn_dbg_info(node);
585 arm_shift_modifier mod;
587 if (mode_is_float(mode)) {
588 env_cg->have_fp_insn = 1;
589 if (USE_FPA(env_cg->isa)) {
590 if (is_arm_Mov_i(new_op1))
591 return new_rd_arm_fpaRsf_i(dbg, irg, block, new_op2, mode, get_arm_imm_value(new_op1));
592 if (is_arm_Mov_i(new_op2))
593 return new_rd_arm_fpaSuf_i(dbg, irg, block, new_op1, mode, get_arm_imm_value(new_op2));
594 return new_rd_arm_fpaSuf(dbg, irg, block, new_op1, new_op2, mode);
595 } else if (USE_VFP(env_cg->isa)) {
596 assert(mode != mode_E && "IEEE Extended FP not supported");
597 panic("VFP not supported yet\n");
601 panic("Softfloat not supported yet\n");
606 assert(mode_is_data(mode) && "unknown mode for Sub");
609 if (is_arm_Mov_i(new_op1))
610 return new_rd_arm_Rsb_i(dbg, irg, block, new_op2, mode, get_arm_imm_value(new_op1));
611 if (is_arm_Mov_i(new_op2))
612 return new_rd_arm_Sub_i(dbg, irg, block, new_op1, mode, get_arm_imm_value(new_op2));
614 /* is the first a shifter */
615 v = is_shifter_operand(new_op1, &mod);
617 new_op1 = get_irn_n(new_op1, 0);
618 return new_rd_arm_Rsb(dbg, irg, block, new_op2, new_op1, mode, mod, v);
620 /* is the second a shifter */
621 v = is_shifter_operand(new_op2, &mod);
623 new_op2 = get_irn_n(new_op2, 0);
624 return new_rd_arm_Sub(dbg, irg, block, new_op1, new_op2, mode, mod, v);
627 return new_rd_arm_Sub(dbg, irg, block, new_op1, new_op2, mode, ARM_SHF_NONE, 0);
632 * Creates an ARM Shl.
634 * @return the created ARM Shl node
636 static ir_node *gen_Shl(ir_node *node) {
637 ir_node *block = be_transform_node(get_nodes_block(node));
638 ir_node *op1 = get_Shl_left(node);
639 ir_node *new_op1 = be_transform_node(op1);
640 ir_node *op2 = get_Shl_right(node);
641 ir_node *new_op2 = be_transform_node(op2);
642 ir_mode *mode = mode_Iu;
643 dbg_info *dbg = get_irn_dbg_info(node);
645 if (is_arm_Mov_i(new_op2)) {
646 return new_rd_arm_Mov(dbg, current_ir_graph, block, new_op1, mode, ARM_SHF_LSL, get_arm_imm_value(new_op2));
648 return new_rd_arm_Shl(dbg, current_ir_graph, block, new_op1, new_op2, mode);
652 * Creates an ARM Shr.
654 * @return the created ARM Shr node
656 static ir_node *gen_Shr(ir_node *node) {
657 ir_node *block = be_transform_node(get_nodes_block(node));
658 ir_node *op1 = get_Shr_left(node);
659 ir_node *new_op1 = be_transform_node(op1);
660 ir_node *op2 = get_Shr_right(node);
661 ir_node *new_op2 = be_transform_node(op2);
662 ir_mode *mode = mode_Iu;
663 dbg_info *dbg = get_irn_dbg_info(node);
665 if (is_arm_Mov_i(new_op2)) {
666 return new_rd_arm_Mov(dbg, current_ir_graph, block, new_op1, mode, ARM_SHF_LSR, get_arm_imm_value(new_op2));
668 return new_rd_arm_Shr(dbg, current_ir_graph, block, new_op1, new_op2, mode);
672 * Creates an ARM Shrs.
674 * @return the created ARM Shrs node
676 static ir_node *gen_Shrs(ir_node *node) {
677 ir_node *block = be_transform_node(get_nodes_block(node));
678 ir_node *op1 = get_Shrs_left(node);
679 ir_node *new_op1 = be_transform_node(op1);
680 ir_node *op2 = get_Shrs_right(node);
681 ir_node *new_op2 = be_transform_node(op2);
682 ir_mode *mode = mode_Iu;
683 dbg_info *dbg = get_irn_dbg_info(node);
685 if (is_arm_Mov_i(new_op2)) {
686 return new_rd_arm_Mov(dbg, current_ir_graph, block, new_op1, mode, ARM_SHF_ASR, get_arm_imm_value(new_op2));
688 return new_rd_arm_Shrs(dbg, current_ir_graph, block, new_op1, new_op2, mode);
692 * Transforms a Not node.
694 * @return the created ARM Not node
696 static ir_node *gen_Not(ir_node *node) {
697 ir_node *block = be_transform_node(get_nodes_block(node));
698 ir_node *op = get_Not_op(node);
699 ir_node *new_op = be_transform_node(op);
700 dbg_info *dbg = get_irn_dbg_info(node);
701 ir_mode *mode = mode_Iu;
702 arm_shift_modifier mod = ARM_SHF_NONE;
703 int v = is_shifter_operand(new_op, &mod);
706 new_op = get_irn_n(new_op, 0);
708 return new_rd_arm_Mvn(dbg, current_ir_graph, block, new_op, mode, mod, v);
712 * Transforms an Abs node.
714 * @param env The transformation environment
715 * @return the created ARM Abs node
717 static ir_node *gen_Abs(ir_node *node) {
718 ir_node *block = be_transform_node(get_nodes_block(node));
719 ir_node *op = get_Abs_op(node);
720 ir_node *new_op = be_transform_node(op);
721 dbg_info *dbg = get_irn_dbg_info(node);
722 ir_mode *mode = get_irn_mode(node);
724 if (mode_is_float(mode)) {
725 env_cg->have_fp_insn = 1;
726 if (USE_FPA(env_cg->isa))
727 return new_rd_arm_fpaAbs(dbg, current_ir_graph, block, new_op, mode);
728 else if (USE_VFP(env_cg->isa)) {
729 assert(mode != mode_E && "IEEE Extended FP not supported");
730 panic("VFP not supported yet\n");
733 panic("Softfloat not supported yet\n");
736 assert(mode_is_data(mode));
738 return new_rd_arm_Abs(dbg, current_ir_graph, block, new_op, mode);
742 * Transforms a Minus node.
744 * @return the created ARM Minus node
746 static ir_node *gen_Minus(ir_node *node) {
747 ir_node *block = be_transform_node(get_nodes_block(node));
748 ir_node *op = get_Minus_op(node);
749 ir_node *new_op = be_transform_node(op);
750 dbg_info *dbg = get_irn_dbg_info(node);
751 ir_mode *mode = get_irn_mode(node);
753 if (mode_is_float(mode)) {
754 env_cg->have_fp_insn = 1;
755 if (USE_FPA(env_cg->isa))
756 return new_rd_arm_fpaMvf(dbg, current_ir_graph, block, op, mode);
757 else if (USE_VFP(env_cg->isa)) {
758 assert(mode != mode_E && "IEEE Extended FP not supported");
759 panic("VFP not supported yet\n");
762 panic("Softfloat not supported yet\n");
765 assert(mode_is_data(mode));
767 return new_rd_arm_Rsb_i(dbg, current_ir_graph, block, new_op, mode, 0);
773 * @return the created ARM Load node
775 static ir_node *gen_Load(ir_node *node) {
776 ir_node *block = be_transform_node(get_nodes_block(node));
777 ir_node *ptr = get_Load_ptr(node);
778 ir_node *new_ptr = be_transform_node(ptr);
779 ir_node *mem = get_Load_mem(node);
780 ir_node *new_mem = be_transform_node(mem);
781 ir_mode *mode = get_Load_mode(node);
782 ir_graph *irg = current_ir_graph;
783 dbg_info *dbg = get_irn_dbg_info(node);
784 ir_node *new_load = NULL;
786 if (mode_is_float(mode)) {
787 env_cg->have_fp_insn = 1;
788 if (USE_FPA(env_cg->isa))
789 new_load = new_rd_arm_fpaLdf(dbg, irg, block, new_ptr, new_mem, mode);
790 else if (USE_VFP(env_cg->isa)) {
791 assert(mode != mode_E && "IEEE Extended FP not supported");
792 panic("VFP not supported yet\n");
795 panic("Softfloat not supported yet\n");
799 assert(mode_is_data(mode) && "unsupported mode for Load");
801 if (mode_is_signed(mode)) {
802 /* sign extended loads */
803 switch (get_mode_size_bits(mode)) {
805 new_load = new_rd_arm_Loadbs(dbg, irg, block, new_ptr, new_mem);
808 new_load = new_rd_arm_Loadhs(dbg, irg, block, new_ptr, new_mem);
811 new_load = new_rd_arm_Load(dbg, irg, block, new_ptr, new_mem);
814 panic("mode size not supported\n");
817 /* zero extended loads */
818 switch (get_mode_size_bits(mode)) {
820 new_load = new_rd_arm_Loadb(dbg, irg, block, new_ptr, new_mem);
823 new_load = new_rd_arm_Loadh(dbg, irg, block, new_ptr, new_mem);
826 new_load = new_rd_arm_Load(dbg, irg, block, new_ptr, new_mem);
829 panic("mode size not supported\n");
833 set_irn_pinned(new_load, get_irn_pinned(node));
835 /* check for special case: the loaded value might not be used */
836 if (be_get_Proj_for_pn(node, pn_Load_res) == NULL) {
837 /* add a result proj and a Keep to produce a pseudo use */
838 ir_node *proj = new_r_Proj(irg, block, new_load, mode_Iu, pn_arm_Load_res);
839 be_new_Keep(arch_get_irn_reg_class(env_cg->arch_env, proj, -1), irg, block, 1, &proj);
846 * Transforms a Store.
848 * @return the created ARM Store node
850 static ir_node *gen_Store(ir_node *node) {
851 ir_node *block = be_transform_node(get_nodes_block(node));
852 ir_node *ptr = get_Store_ptr(node);
853 ir_node *new_ptr = be_transform_node(ptr);
854 ir_node *mem = get_Store_mem(node);
855 ir_node *new_mem = be_transform_node(mem);
856 ir_node *val = get_Store_value(node);
857 ir_node *new_val = be_transform_node(val);
858 ir_mode *mode = get_irn_mode(val);
859 ir_graph *irg = current_ir_graph;
860 dbg_info *dbg = get_irn_dbg_info(node);
861 ir_node *new_store = NULL;
863 if (mode_is_float(mode)) {
864 env_cg->have_fp_insn = 1;
865 if (USE_FPA(env_cg->isa))
866 new_store = new_rd_arm_fpaStf(dbg, irg, block, new_ptr, new_val, new_mem, mode);
867 else if (USE_VFP(env_cg->isa)) {
868 assert(mode != mode_E && "IEEE Extended FP not supported");
869 panic("VFP not supported yet\n");
871 panic("Softfloat not supported yet\n");
874 assert(mode_is_data(mode) && "unsupported mode for Store");
875 switch (get_mode_size_bits(mode)) {
877 new_store = new_rd_arm_Storeb(dbg, irg, block, new_ptr, new_val, new_mem);
879 new_store = new_rd_arm_Storeh(dbg, irg, block, new_ptr, new_val, new_mem);
881 new_store = new_rd_arm_Store(dbg, irg, block, new_ptr, new_val, new_mem);
884 set_irn_pinned(new_store, get_irn_pinned(node));
891 * @return the created ARM Cond node
893 static ir_node *gen_Cond(ir_node *node) {
894 ir_node *block = be_transform_node(get_nodes_block(node));
895 ir_node *selector = get_Cond_selector(node);
896 ir_graph *irg = current_ir_graph;
897 dbg_info *dbg = get_irn_dbg_info(node);
898 ir_mode *mode = get_irn_mode(selector);
900 if (mode == mode_b) {
901 /* an conditional jump */
902 ir_node *cmp_node = get_Proj_pred(selector);
903 ir_node *op1 = get_Cmp_left(cmp_node);
904 ir_node *new_op1 = be_transform_node(op1);
905 ir_node *op2 = get_Cmp_right(cmp_node);
906 ir_node *new_op2 = be_transform_node(op2);
908 if (mode_is_float(get_irn_mode(op1))) {
909 /* floating point compare */
910 pn_Cmp pnc = get_Proj_proj(selector);
912 if (pnc & pn_Cmp_Uo) {
913 /* check for unordered, need cmf */
914 return new_rd_arm_fpaCmfBra(dbg, irg, block, new_op1, new_op2, pnc);
916 /* Hmm: use need cmfe */
917 return new_rd_arm_fpaCmfeBra(dbg, irg, block, new_op1, new_op2, pnc);
919 /* integer compare */
920 return new_rd_arm_CmpBra(dbg, irg, block, new_op1, new_op2, get_Proj_proj(selector));
924 ir_node *new_op = be_transform_node(selector);
925 ir_node *const_graph;
929 const ir_edge_t *edge;
936 foreach_out_edge(node, edge) {
937 proj = get_edge_src_irn(edge);
938 assert(is_Proj(proj) && "Only proj allowed at SwitchJmp");
940 pn = get_Proj_proj(proj);
942 min = pn<min ? pn : min;
943 max = pn>max ? pn : max;
946 n_projs = max - translation + 1;
948 foreach_out_edge(node, edge) {
949 proj = get_edge_src_irn(edge);
950 assert(is_Proj(proj) && "Only proj allowed at SwitchJmp");
952 pn = get_Proj_proj(proj) - translation;
953 set_Proj_proj(proj, pn);
956 const_graph = create_const_graph_value(dbg, block, translation);
957 sub = new_rd_arm_Sub(dbg, irg, block, new_op, const_graph, mode, ARM_SHF_NONE, 0);
958 return new_rd_arm_SwitchJmp(dbg, irg, block, sub, n_projs, get_Cond_defaultProj(node) - translation);
963 * Returns the name of a SymConst.
964 * @param symc the SymConst
965 * @return name of the SymConst
967 static ident *get_sc_ident(ir_node *symc) {
970 switch (get_SymConst_kind(symc)) {
971 case symconst_addr_name:
972 return get_SymConst_name(symc);
974 case symconst_addr_ent:
975 ent = get_SymConst_entity(symc);
976 set_entity_backend_marked(ent, 1);
977 return get_entity_ld_ident(ent);
980 assert(0 && "Unsupported SymConst");
986 static tarval *fpa_imm[3][fpa_max];
989 * Check, if a floating point tarval is an fpa immediate, i.e.
990 * one of 0, 1, 2, 3, 4, 5, 10, or 0.5.
992 static int is_fpa_immediate(tarval *tv) {
993 ir_mode *mode = get_tarval_mode(tv);
996 switch (get_mode_size_bits(mode)) {
1007 if (tarval_cmp(tv, get_tarval_null(mode)) & pn_Cmp_Lt) {
1008 tv = tarval_neg(tv);
1012 for (j = 0; j < fpa_max; ++j) {
1013 if (tv == fpa_imm[i][j])
1020 * Transforms a Const node.
1022 * @return The transformed ARM node.
1024 static ir_node *gen_Const(ir_node *node) {
1025 ir_node *block = be_transform_node(get_nodes_block(node));
1026 ir_graph *irg = current_ir_graph;
1027 ir_mode *mode = get_irn_mode(node);
1028 dbg_info *dbg = get_irn_dbg_info(node);
1030 if (mode_is_float(mode)) {
1031 env_cg->have_fp_insn = 1;
1032 if (USE_FPA(env_cg->isa)) {
1033 tarval *tv = get_Const_tarval(node);
1034 int imm = is_fpa_immediate(tv);
1036 if (imm != fpa_max) {
1038 node = new_rd_arm_fpaMvf_i(dbg, irg, block, mode, imm);
1040 node = new_rd_arm_fpaMnf_i(dbg, irg, block, mode, -imm);
1042 node = new_rd_arm_fpaConst(dbg, irg, block, tv);
1044 /* ensure the const is scheduled AFTER the stack frame */
1045 add_irn_dep(node, get_irg_frame(irg));
1048 else if (USE_VFP(env_cg->isa)) {
1049 assert(mode != mode_E && "IEEE Extended FP not supported");
1050 panic("VFP not supported yet\n");
1053 panic("Softfloat not supported yet\n");
1056 return create_const_graph(node, block);
1060 * Transforms a SymConst node.
1062 * @return The transformed ARM node.
1064 static ir_node *gen_SymConst(ir_node *node) {
1065 ir_node *block = be_transform_node(get_nodes_block(node));
1066 ir_mode *mode = mode_Iu;
1067 dbg_info *dbg = get_irn_dbg_info(node);
1068 ir_graph *irg = current_ir_graph;
1071 res = new_rd_arm_SymConst(dbg, irg, block, mode, get_sc_ident(node));
1072 /* ensure the const is scheduled AFTER the stack frame */
1073 add_irn_dep(res, get_irg_frame(irg));
1078 * Transforms a CopyB node.
1080 * @return The transformed ARM node.
1082 static ir_node *gen_CopyB(ir_node *node) {
1083 ir_node *block = be_transform_node(get_nodes_block(node));
1084 ir_node *src = get_CopyB_src(node);
1085 ir_node *new_src = be_transform_node(src);
1086 ir_node *dst = get_CopyB_dst(node);
1087 ir_node *new_dst = be_transform_node(dst);
1088 ir_node *mem = get_CopyB_mem(node);
1089 ir_node *new_mem = be_transform_node(mem);
1090 ir_graph *irg = current_ir_graph;
1091 dbg_info *dbg = get_irn_dbg_info(node);
1092 int size = get_type_size_bytes(get_CopyB_type(node));
1096 src_copy = be_new_Copy(&arm_reg_classes[CLASS_arm_gp], irg, block, new_src);
1097 dst_copy = be_new_Copy(&arm_reg_classes[CLASS_arm_gp], irg, block, new_dst);
1099 return new_rd_arm_CopyB(dbg, irg, block, dst_copy, src_copy,
1100 new_rd_arm_EmptyReg(dbg, irg, block, mode_Iu),
1101 new_rd_arm_EmptyReg(dbg, irg, block, mode_Iu),
1102 new_rd_arm_EmptyReg(dbg, irg, block, mode_Iu),
1107 /********************************************
1110 * | |__ ___ _ __ ___ __| | ___ ___
1111 * | '_ \ / _ \ '_ \ / _ \ / _` |/ _ \/ __|
1112 * | |_) | __/ | | | (_) | (_| | __/\__ \
1113 * |_.__/ \___|_| |_|\___/ \__,_|\___||___/
1115 ********************************************/
1118 * Return an expanding stack offset.
1119 * Note that function is called in the transform phase
1120 * where the stack offsets are still relative regarding
1121 * the first (frame allocating) IncSP.
1122 * However this is exactly what we want because frame
1123 * access must be done relative the the fist IncSP ...
1125 static int get_sp_expand_offset(ir_node *inc_sp) {
1126 int offset = be_get_IncSP_offset(inc_sp);
1128 if (offset == BE_STACK_FRAME_SIZE_EXPAND)
1135 static ir_node *gen_StackParam(ir_node *irn) {
1136 ir_node *block = be_transform_node(get_nodes_block(node));
1137 ir_node *new_op = NULL;
1138 ir_node *noreg = ia32_new_NoReg_gp(env->cg);
1139 ir_node *mem = new_rd_NoMem(env->irg);
1140 ir_node *ptr = get_irn_n(irn, 0);
1141 ir_entity *ent = be_get_frame_entity(irn);
1142 ir_mode *mode = env->mode;
1144 // /* If the StackParam has only one user -> */
1145 // /* put it in the Block where the user resides */
1146 // if (get_irn_n_edges(node) == 1) {
1147 // env->block = get_nodes_block(get_edge_src_irn(get_irn_out_edge_first(node)));
1150 if (mode_is_float(mode)) {
1151 if (USE_SSE2(env->cg))
1152 new_op = new_rd_ia32_fLoad(env->dbg, env->irg, block, ptr, noreg, mem, mode_T);
1154 env->cg->used_x87 = 1;
1155 new_op = new_rd_ia32_vfld(env->dbg, env->irg, block, ptr, noreg, mem, mode_T);
1159 new_op = new_rd_ia32_Load(env->dbg, env->irg, block, ptr, noreg, mem, mode_T);
1162 set_ia32_frame_ent(new_op, ent);
1163 set_ia32_use_frame(new_op);
1165 set_ia32_am_support(new_op, ia32_am_Source);
1166 set_ia32_op_type(new_op, ia32_AddrModeS);
1167 set_ia32_am_flavour(new_op, ia32_B);
1168 set_ia32_ls_mode(new_op, mode);
1170 SET_IA32_ORIG_NODE(new_op, ia32_get_old_node_name(env->cg, env->irn));
1172 return new_rd_Proj(env->dbg, env->irg, block, new_op, mode, 0);
1177 * Transforms a FrameAddr into an ARM Add.
1179 static ir_node *gen_be_FrameAddr(ir_node *node) {
1180 ir_node *block = be_transform_node(get_nodes_block(node));
1181 ir_entity *ent = be_get_frame_entity(node);
1182 int offset = get_entity_offset(ent);
1183 ir_node *op = be_get_FrameAddr_frame(node);
1184 ir_node *new_op = be_transform_node(op);
1185 dbg_info *dbg = get_irn_dbg_info(node);
1186 ir_mode *mode = mode_Iu;
1189 if (be_is_IncSP(op)) {
1190 /* BEWARE: we get an offset which is absolute from an offset that
1191 is relative. Both must be merged */
1192 offset += get_sp_expand_offset(op);
1194 cnst = create_const_graph_value(dbg, block, (unsigned)offset);
1195 if (is_arm_Mov_i(cnst))
1196 return new_rd_arm_Add_i(dbg, current_ir_graph, block, new_op, mode, get_arm_imm_value(cnst));
1197 return new_rd_arm_Add(dbg, current_ir_graph, block, new_op, cnst, mode, ARM_SHF_NONE, 0);
1202 * Transforms a FrameLoad into an ARM Load.
1204 static ir_node *gen_FrameLoad(ir_node *irn) {
1205 ir_node *new_op = NULL;
1206 ir_node *noreg = ia32_new_NoReg_gp(env->cg);
1207 ir_node *mem = get_irn_n(irn, 0);
1208 ir_node *ptr = get_irn_n(irn, 1);
1209 ir_entity *ent = be_get_frame_entity(irn);
1210 ir_mode *mode = get_type_mode(get_entity_type(ent));
1212 if (mode_is_float(mode)) {
1213 if (USE_SSE2(env->cg))
1214 new_op = new_rd_ia32_fLoad(env->dbg, current_ir_graph, env->block, ptr, noreg, mem, mode_T);
1216 env->cg->used_x87 = 1;
1217 new_op = new_rd_ia32_vfld(env->dbg, current_ir_graph, env->block, ptr, noreg, mem, mode_T);
1221 new_op = new_rd_ia32_Load(env->dbg, current_ir_graph, env->block, ptr, noreg, mem, mode_T);
1224 set_ia32_frame_ent(new_op, ent);
1225 set_ia32_use_frame(new_op);
1227 set_ia32_am_support(new_op, ia32_am_Source);
1228 set_ia32_op_type(new_op, ia32_AddrModeS);
1229 set_ia32_am_flavour(new_op, ia32_B);
1230 set_ia32_ls_mode(new_op, mode);
1232 SET_IA32_ORIG_NODE(new_op, ia32_get_old_node_name(env->cg, env->irn));
1239 * Transform a be_AddSP into an arm_AddSP. Eat up const sizes.
1241 static ir_node *gen_be_AddSP(ir_node *node) {
1242 ir_node *block = be_transform_node(get_nodes_block(node));
1243 ir_node *sz = get_irn_n(node, be_pos_AddSP_size);
1244 ir_node *new_sz = be_transform_node(sz);
1245 ir_node *sp = get_irn_n(node, be_pos_AddSP_old_sp);
1246 ir_node *new_sp = be_transform_node(sp);
1247 ir_graph *irg = current_ir_graph;
1248 dbg_info *dbgi = get_irn_dbg_info(node);
1249 ir_node *nomem = new_NoMem();
1252 /* ARM stack grows in reverse direction, make a SubSP */
1253 new_op = new_rd_arm_SubSP(dbgi, irg, block, new_sp, new_sz, nomem);
1259 * Transform a be_SubSP into an arm_SubSP. Eat up const sizes.
1261 static ir_node *gen_be_SubSP(ir_node *node) {
1262 ir_node *block = be_transform_node(get_nodes_block(node));
1263 ir_node *sz = get_irn_n(node, be_pos_SubSP_size);
1264 ir_node *new_sz = be_transform_node(sz);
1265 ir_node *sp = get_irn_n(node, be_pos_SubSP_old_sp);
1266 ir_node *new_sp = be_transform_node(sp);
1267 ir_graph *irg = current_ir_graph;
1268 dbg_info *dbgi = get_irn_dbg_info(node);
1269 ir_node *nomem = new_NoMem();
1272 /* ARM stack grows in reverse direction, make an AddSP */
1273 new_op = new_rd_arm_AddSP(dbgi, irg, block, new_sp, new_sz, nomem);
1279 * Transform a be_Copy.
1281 static ir_node *gen_be_Copy(ir_node *node) {
1282 ir_node *result = be_duplicate_node(node);
1283 ir_mode *mode = get_irn_mode(result);
1285 if (mode_needs_gp_reg(mode)) {
1286 set_irn_mode(node, mode_Iu);
1293 * Transform a Proj from a Load.
1295 static ir_node *gen_Proj_Load(ir_node *node) {
1296 ir_node *block = be_transform_node(get_nodes_block(node));
1297 ir_node *load = get_Proj_pred(node);
1298 ir_node *new_load = be_transform_node(load);
1299 ir_graph *irg = current_ir_graph;
1300 dbg_info *dbgi = get_irn_dbg_info(node);
1301 long proj = get_Proj_proj(node);
1303 /* renumber the proj */
1304 switch (get_arm_irn_opcode(new_load)) {
1307 case iro_arm_Loadbs:
1309 case iro_arm_Loadhs:
1310 /* handle all gp loads equal: they have the same proj numbers. */
1311 if (proj == pn_Load_res) {
1312 return new_rd_Proj(dbgi, irg, block, new_load, mode_Iu, pn_arm_Load_res);
1313 } else if (proj == pn_Load_M) {
1314 return new_rd_Proj(dbgi, irg, block, new_load, mode_M, pn_arm_Load_M);
1317 case iro_arm_fpaLdf:
1318 if (proj == pn_Load_res) {
1319 ir_mode *mode = get_Load_mode(load);
1320 return new_rd_Proj(dbgi, irg, block, new_load, mode, pn_arm_fpaLdf_res);
1321 } else if (proj == pn_Load_M) {
1322 return new_rd_Proj(dbgi, irg, block, new_load, mode_M, pn_arm_fpaLdf_M);
1329 return new_rd_Unknown(irg, get_irn_mode(node));
1333 * Transform and renumber the Projs from a CopyB.
1335 static ir_node *gen_Proj_CopyB(ir_node *node) {
1336 ir_node *block = be_transform_node(get_nodes_block(node));
1337 ir_node *pred = get_Proj_pred(node);
1338 ir_node *new_pred = be_transform_node(pred);
1339 ir_graph *irg = current_ir_graph;
1340 dbg_info *dbgi = get_irn_dbg_info(node);
1341 ir_mode *mode = get_irn_mode(node);
1342 long proj = get_Proj_proj(node);
1345 case pn_CopyB_M_regular:
1346 if (is_arm_CopyB(new_pred)) {
1347 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_arm_CopyB_M);
1354 return new_rd_Unknown(irg, mode);
1358 * Transform and renumber the Projs from a Quot.
1360 static ir_node *gen_Proj_Quot(ir_node *node) {
1361 ir_node *block = be_transform_node(get_nodes_block(node));
1362 ir_node *pred = get_Proj_pred(node);
1363 ir_node *new_pred = be_transform_node(pred);
1364 ir_graph *irg = current_ir_graph;
1365 dbg_info *dbgi = get_irn_dbg_info(node);
1366 ir_mode *mode = get_irn_mode(node);
1367 long proj = get_Proj_proj(node);
1371 if (is_arm_fpaDvf(new_pred) || is_arm_fpaDvf_i(new_pred)) {
1372 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_arm_fpaDvf_M);
1373 } else if (is_arm_fpaRdf(new_pred) || is_arm_fpaRdf_i(new_pred)) {
1374 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_arm_fpaRdf_M);
1375 } else if (is_arm_fpaFdv(new_pred) || is_arm_fpaFdv_i(new_pred)) {
1376 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_arm_fpaFdv_M);
1377 } else if (is_arm_fpaFrd(new_pred) || is_arm_fpaFrd_i(new_pred)) {
1378 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_arm_fpaFrd_M);
1382 if (is_arm_fpaDvf(new_pred) || is_arm_fpaDvf_i(new_pred)) {
1383 return new_rd_Proj(dbgi, irg, block, new_pred, mode, pn_arm_fpaDvf_res);
1384 } else if (is_arm_fpaRdf(new_pred) || is_arm_fpaRdf_i(new_pred)) {
1385 return new_rd_Proj(dbgi, irg, block, new_pred, mode, pn_arm_fpaRdf_res);
1386 } else if (is_arm_fpaFdv(new_pred) || is_arm_fpaFdv_i(new_pred)) {
1387 return new_rd_Proj(dbgi, irg, block, new_pred, mode, pn_arm_fpaFdv_res);
1388 } else if (is_arm_fpaFrd(new_pred) || is_arm_fpaFrd_i(new_pred)) {
1389 return new_rd_Proj(dbgi, irg, block, new_pred, mode, pn_arm_fpaFrd_res);
1396 return new_rd_Unknown(irg, mode);
1400 * Transform the Projs of a be_AddSP.
1402 static ir_node *gen_Proj_be_AddSP(ir_node *node) {
1403 ir_node *block = be_transform_node(get_nodes_block(node));
1404 ir_node *pred = get_Proj_pred(node);
1405 ir_node *new_pred = be_transform_node(pred);
1406 ir_graph *irg = current_ir_graph;
1407 dbg_info *dbgi = get_irn_dbg_info(node);
1408 long proj = get_Proj_proj(node);
1410 if (proj == pn_be_AddSP_sp) {
1411 ir_node *res = new_rd_Proj(dbgi, irg, block, new_pred, mode_Iu,
1412 pn_arm_SubSP_stack);
1413 arch_set_irn_register(env_cg->arch_env, res, &arm_gp_regs[REG_SP]);
1415 } else if(proj == pn_be_AddSP_res) {
1416 return new_rd_Proj(dbgi, irg, block, new_pred, mode_Iu,
1418 } else if (proj == pn_be_AddSP_M) {
1419 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_arm_SubSP_M);
1423 return new_rd_Unknown(irg, get_irn_mode(node));
1427 * Transform the Projs of a be_SubSP.
1429 static ir_node *gen_Proj_be_SubSP(ir_node *node) {
1430 ir_node *block = be_transform_node(get_nodes_block(node));
1431 ir_node *pred = get_Proj_pred(node);
1432 ir_node *new_pred = be_transform_node(pred);
1433 ir_graph *irg = current_ir_graph;
1434 dbg_info *dbgi = get_irn_dbg_info(node);
1435 long proj = get_Proj_proj(node);
1437 if (proj == pn_be_SubSP_sp) {
1438 ir_node *res = new_rd_Proj(dbgi, irg, block, new_pred, mode_Iu,
1439 pn_arm_AddSP_stack);
1440 arch_set_irn_register(env_cg->arch_env, res, &arm_gp_regs[REG_SP]);
1442 } else if (proj == pn_be_SubSP_M) {
1443 return new_rd_Proj(dbgi, irg, block, new_pred, mode_M, pn_arm_AddSP_M);
1447 return new_rd_Unknown(irg, get_irn_mode(node));
1451 * Transform the Projs from a Cmp.
1453 static ir_node *gen_Proj_Cmp(ir_node *node) {
1460 * Transform the Thread Local Storage Proj.
1462 static ir_node *gen_Proj_tls(ir_node *node) {
1463 ir_node *block = be_transform_node(get_nodes_block(node));
1464 ir_graph *irg = current_ir_graph;
1465 dbg_info *dbgi = NULL;
1467 return new_rd_arm_LdTls(dbgi, irg, block, mode_Iu);
1471 * Transform a Proj node.
1473 static ir_node *gen_Proj(ir_node *node) {
1474 ir_graph *irg = current_ir_graph;
1475 dbg_info *dbgi = get_irn_dbg_info(node);
1476 ir_node *pred = get_Proj_pred(node);
1477 long proj = get_Proj_proj(node);
1479 if (is_Store(pred)) {
1480 if (proj == pn_Store_M) {
1481 return be_transform_node(pred);
1484 return new_r_Bad(irg);
1486 } else if (is_Load(pred)) {
1487 return gen_Proj_Load(node);
1488 } else if (is_CopyB(pred)) {
1489 return gen_Proj_CopyB(node);
1490 } else if (is_Quot(pred)) {
1491 return gen_Proj_Quot(node);
1492 } else if (be_is_SubSP(pred)) {
1493 return gen_Proj_be_SubSP(node);
1494 } else if (be_is_AddSP(pred)) {
1495 return gen_Proj_be_AddSP(node);
1496 } else if (is_Cmp(pred)) {
1497 return gen_Proj_Cmp(node);
1498 } else if (get_irn_op(pred) == op_Start) {
1499 if (proj == pn_Start_X_initial_exec) {
1500 ir_node *block = get_nodes_block(pred);
1503 /* we exchange the ProjX with a jump */
1504 block = be_transform_node(block);
1505 jump = new_rd_Jmp(dbgi, irg, block);
1506 ir_fprintf(stderr, "created jump: %+F\n", jump);
1509 if (node == get_irg_anchor(irg, anchor_tls)) {
1510 return gen_Proj_tls(node);
1513 ir_node *new_pred = be_transform_node(pred);
1514 ir_mode *mode = get_irn_mode(node);
1515 if (mode_needs_gp_reg(mode)) {
1516 ir_node *block = be_transform_node(get_nodes_block(node));
1517 ir_node *new_proj = new_r_Proj(irg, block, new_pred, mode_Iu,
1518 get_Proj_proj(node));
1519 #ifdef DEBUG_libfirm
1520 new_proj->node_nr = node->node_nr;
1526 return be_duplicate_node(node);
1529 typedef ir_node *(*create_const_node_func)(dbg_info *db, ir_graph *irg, ir_node *block);
1531 static INLINE ir_node *create_const(ir_node **place,
1532 create_const_node_func func,
1533 const arch_register_t* reg)
1535 ir_node *block, *res;
1540 block = get_irg_start_block(env_cg->irg);
1541 res = func(NULL, env_cg->irg, block);
1542 arch_set_irn_register(env_cg->arch_env, res, reg);
1545 add_irn_dep(get_irg_end(env_cg->irg), res);
1549 static ir_node *arm_new_Unknown_gp(void) {
1550 return create_const(&env_cg->unknown_gp, new_rd_arm_Unknown_GP,
1551 &arm_gp_regs[REG_GP_UKNWN]);
1554 static ir_node *arm_new_Unknown_fpa(void) {
1555 return create_const(&env_cg->unknown_fpa, new_rd_arm_Unknown_FPA,
1556 &arm_fpa_regs[REG_FPA_UKNWN]);
1560 * This function just sets the register for the Unknown node
1561 * as this is not done during register allocation because Unknown
1562 * is an "ignore" node.
1564 static ir_node *gen_Unknown(ir_node *node) {
1565 ir_mode *mode = get_irn_mode(node);
1566 if (mode_is_float(mode)) {
1567 if (USE_FPA(env_cg->isa))
1568 return arm_new_Unknown_fpa();
1569 else if (USE_VFP(env_cg->isa))
1570 panic("VFP not supported yet");
1572 panic("Softfloat not supported yet");
1573 } else if (mode_needs_gp_reg(mode)) {
1574 return arm_new_Unknown_gp();
1576 assert(0 && "unsupported Unknown-Mode");
1583 * Change some phi modes
1585 static ir_node *gen_Phi(ir_node *node) {
1586 ir_node *block = be_transform_node(get_nodes_block(node));
1587 ir_graph *irg = current_ir_graph;
1588 dbg_info *dbgi = get_irn_dbg_info(node);
1589 ir_mode *mode = get_irn_mode(node);
1592 if (mode_needs_gp_reg(mode)) {
1593 /* we shouldn't have any 64bit stuff around anymore */
1594 assert(get_mode_size_bits(mode) <= 32);
1595 /* all integer operations are on 32bit registers now */
1599 /* phi nodes allow loops, so we use the old arguments for now
1600 * and fix this later */
1601 phi = new_ir_node(dbgi, irg, block, op_Phi, mode, get_irn_arity(node), get_irn_in(node) + 1);
1602 copy_node_attr(node, phi);
1603 be_duplicate_deps(node, phi);
1605 be_set_transformed_node(node, phi);
1606 be_enqueue_preds(node);
1611 /*********************************************************
1614 * _ __ ___ __ _ _ _ __ __| |_ __ ___ _____ _ __
1615 * | '_ ` _ \ / _` | | '_ \ / _` | '__| \ \ / / _ \ '__|
1616 * | | | | | | (_| | | | | | | (_| | | | |\ V / __/ |
1617 * |_| |_| |_|\__,_|_|_| |_| \__,_|_| |_| \_/ \___|_|
1619 *********************************************************/
1622 * the BAD transformer.
1624 static ir_node *bad_transform(ir_node *irn) {
1625 panic("ARM backend: Not implemented: %+F\n", irn);
1630 * Set a node emitter. Make it a bit more type safe.
1632 static INLINE void set_transformer(ir_op *op, be_transform_func arm_transform_func) {
1633 op->ops.generic = (op_func)arm_transform_func;
1637 * Enters all transform functions into the generic pointer
1639 static void arm_register_transformers(void) {
1640 ir_op *op_Max, *op_Min, *op_Mulh;
1642 /* first clear the generic function pointer for all ops */
1643 clear_irp_opcodes_generic_func();
1645 #define GEN(a) set_transformer(op_##a, gen_##a)
1646 #define BAD(a) set_transformer(op_##a, bad_transform)
1658 BAD(Rot); /* unsupported yet */
1662 /* should be lowered */
1676 BAD(ASM); /* unsupported yet */
1679 BAD(Psi); /* unsupported yet */
1686 /* we should never see these nodes */
1701 /* handle generic backend nodes */
1709 /* set the register for all Unknown nodes */
1712 op_Max = get_op_Max();
1714 BAD(Max); /* unsupported yet */
1715 op_Min = get_op_Min();
1717 BAD(Min); /* unsupported yet */
1718 op_Mulh = get_op_Mulh();
1720 BAD(Mulh); /* unsupported yet */
1727 * Pre-transform all unknown nodes.
1729 static void arm_pretransform_node(void *arch_cg) {
1730 arm_code_gen_t *cg = arch_cg;
1732 cg->unknown_gp = be_pre_transform_node(cg->unknown_gp);
1733 cg->unknown_fpa = be_pre_transform_node(cg->unknown_fpa);
1737 * Initialize fpa Immediate support.
1739 static void arm_init_fpa_immediate(void) {
1740 /* 0, 1, 2, 3, 4, 5, 10, or 0.5. */
1741 fpa_imm[0][fpa_null] = get_tarval_null(mode_F);
1742 fpa_imm[0][fpa_one] = get_tarval_one(mode_F);
1743 fpa_imm[0][fpa_two] = new_tarval_from_str("2", 1, mode_F);
1744 fpa_imm[0][fpa_three] = new_tarval_from_str("3", 1, mode_F);
1745 fpa_imm[0][fpa_four] = new_tarval_from_str("4", 1, mode_F);
1746 fpa_imm[0][fpa_five] = new_tarval_from_str("5", 1, mode_F);
1747 fpa_imm[0][fpa_ten] = new_tarval_from_str("10", 2, mode_F);
1748 fpa_imm[0][fpa_half] = new_tarval_from_str("0.5", 3, mode_F);
1750 fpa_imm[1][fpa_null] = get_tarval_null(mode_D);
1751 fpa_imm[1][fpa_one] = get_tarval_one(mode_D);
1752 fpa_imm[1][fpa_two] = new_tarval_from_str("2", 1, mode_D);
1753 fpa_imm[1][fpa_three] = new_tarval_from_str("3", 1, mode_D);
1754 fpa_imm[1][fpa_four] = new_tarval_from_str("4", 1, mode_D);
1755 fpa_imm[1][fpa_five] = new_tarval_from_str("5", 1, mode_D);
1756 fpa_imm[1][fpa_ten] = new_tarval_from_str("10", 2, mode_D);
1757 fpa_imm[1][fpa_half] = new_tarval_from_str("0.5", 3, mode_D);
1759 fpa_imm[2][fpa_null] = get_tarval_null(mode_E);
1760 fpa_imm[2][fpa_one] = get_tarval_one(mode_E);
1761 fpa_imm[2][fpa_two] = new_tarval_from_str("2", 1, mode_E);
1762 fpa_imm[2][fpa_three] = new_tarval_from_str("3", 1, mode_E);
1763 fpa_imm[2][fpa_four] = new_tarval_from_str("4", 1, mode_E);
1764 fpa_imm[2][fpa_five] = new_tarval_from_str("5", 1, mode_E);
1765 fpa_imm[2][fpa_ten] = new_tarval_from_str("10", 2, mode_E);
1766 fpa_imm[2][fpa_half] = new_tarval_from_str("0.5", 3, mode_E);
1770 * Transform a Firm graph into an ARM graph.
1772 void arm_transform_graph(arm_code_gen_t *cg) {
1773 static int imm_initialized = 0;
1775 if (! imm_initialized) {
1776 arm_init_fpa_immediate();
1777 imm_initialized = 1;
1779 arm_register_transformers();
1781 be_transform_graph(cg->birg, arm_pretransform_node, cg);
1784 void arm_init_transform(void) {
1785 // FIRM_DBG_REGISTER(dbg, "firm.be.arm.transform");