2 * Copyright (C) 1995-2010 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 code selection (transform FIRM into SPARC FIRM)
28 #include "irgraph_t.h"
39 #include "../benode.h"
41 #include "../beutil.h"
42 #include "../betranshlp.h"
43 #include "../beabihelper.h"
44 #include "bearch_sparc_t.h"
46 #include "sparc_nodes_attr.h"
47 #include "sparc_transform.h"
48 #include "sparc_new_nodes.h"
49 #include "gen_sparc_new_nodes.h"
51 #include "gen_sparc_regalloc_if.h"
52 #include "sparc_cconv.h"
56 DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL;)
58 static sparc_code_gen_t *env_cg;
59 static beabi_helper_env_t *abihelper;
60 static const arch_register_t *sp_reg = &sparc_gp_regs[REG_SP];
61 static const arch_register_t *fp_reg = &sparc_gp_regs[REG_FRAME_POINTER];
62 static calling_convention_t *cconv = NULL;
63 static ir_mode *mode_gp;
64 static ir_mode *mode_fp;
65 static ir_mode *mode_fp2;
66 //static ir_mode *mode_fp4;
67 static pmap *node_to_stack;
69 static ir_node *gen_SymConst(ir_node *node);
72 static inline int mode_needs_gp_reg(ir_mode *mode)
74 return mode_is_int(mode) || mode_is_reference(mode);
78 * Create an And that will zero out upper bits.
80 * @param dbgi debug info
81 * @param block the basic block
82 * @param op the original node
83 * @param src_bits number of lower bits that will remain
85 static ir_node *gen_zero_extension(dbg_info *dbgi, ir_node *block, ir_node *op,
89 return new_bd_sparc_And_imm(dbgi, block, op, 0xFF);
90 } else if (src_bits == 16) {
91 ir_node *lshift = new_bd_sparc_Sll_imm(dbgi, block, op, 16);
92 ir_node *rshift = new_bd_sparc_Slr_imm(dbgi, block, lshift, 16);
95 panic("zero extension only supported for 8 and 16 bits");
100 * Generate code for a sign extension.
102 * @param dbgi debug info
103 * @param block the basic block
104 * @param op the original node
105 * @param src_bits number of lower bits that will remain
107 static ir_node *gen_sign_extension(dbg_info *dbgi, ir_node *block, ir_node *op,
110 int shift_width = 32 - src_bits;
111 ir_node *lshift_node = new_bd_sparc_Sll_imm(dbgi, block, op, shift_width);
112 ir_node *rshift_node = new_bd_sparc_Sra_imm(dbgi, block, lshift_node, shift_width);
117 * returns true if it is assured, that the upper bits of a node are "clean"
118 * which means for a 16 or 8 bit value, that the upper bits in the register
119 * are 0 for unsigned and a copy of the last significant bit for signed
122 static bool upper_bits_clean(ir_node *transformed_node, ir_mode *mode)
124 (void) transformed_node;
131 * Extend a value to 32 bit signed/unsigned depending on its mode.
133 * @param dbgi debug info
134 * @param block the basic block
135 * @param op the original node
136 * @param orig_mode the original mode of op
138 static ir_node *gen_extension(dbg_info *dbgi, ir_node *block, ir_node *op,
141 int bits = get_mode_size_bits(orig_mode);
145 if (mode_is_signed(orig_mode)) {
146 return gen_sign_extension(dbgi, block, op, bits);
148 return gen_zero_extension(dbgi, block, op, bits);
153 * Creates a possible DAG for a constant.
155 static ir_node *create_const_graph_value(dbg_info *dbgi, ir_node *block,
160 /* we need to load hi & lo separately */
161 if (value < -4096 || value > 4095) {
162 ir_node *hi = new_bd_sparc_HiImm(dbgi, block, (int) value);
163 result = new_bd_sparc_LoImm(dbgi, block, hi, value);
166 result = new_bd_sparc_Mov_imm(dbgi, block, (int) value);
167 be_dep_on_frame(result);
174 * Create a DAG constructing a given Const.
176 * @param irn a Firm const
178 static ir_node *create_const_graph(ir_node *irn, ir_node *block)
180 tarval *tv = get_Const_tarval(irn);
181 ir_mode *mode = get_tarval_mode(tv);
182 dbg_info *dbgi = get_irn_dbg_info(irn);
186 if (mode_is_reference(mode)) {
187 /* SPARC V8 is 32bit, so we can safely convert a reference tarval into Iu */
188 assert(get_mode_size_bits(mode) == get_mode_size_bits(mode_gp));
189 tv = tarval_convert_to(tv, mode_gp);
192 value = get_tarval_long(tv);
193 return create_const_graph_value(dbgi, block, value);
198 MATCH_COMMUTATIVE = 1 << 0, /**< commutative operation. */
201 typedef ir_node* (*new_binop_reg_func) (dbg_info *dbgi, ir_node *block, ir_node *op1, ir_node *op2);
202 typedef ir_node* (*new_binop_fp_func) (dbg_info *dbgi, ir_node *block, ir_node *op1, ir_node *op2, ir_mode *mode);
203 typedef ir_node* (*new_binop_imm_func) (dbg_info *dbgi, ir_node *block, ir_node *op1, int simm13);
204 typedef ir_node* (*new_unop_fp_func) (dbg_info *dbgi, ir_node *block, ir_node *op1, ir_mode *mode);
207 * checks if a node's value can be encoded as a immediate
210 static bool is_imm_encodeable(const ir_node *node)
217 val = get_tarval_long(get_Const_tarval(node));
219 return -4096 <= val && val <= 4095;
223 * helper function for binop operations
225 * @param new_reg register generation function ptr
226 * @param new_imm immediate generation function ptr
228 static ir_node *gen_helper_binop(ir_node *node, match_flags_t flags,
229 new_binop_reg_func new_reg, new_binop_imm_func new_imm)
231 ir_node *block = be_transform_node(get_nodes_block(node));
232 ir_node *op1 = get_binop_left(node);
234 ir_node *op2 = get_binop_right(node);
236 dbg_info *dbgi = get_irn_dbg_info(node);
238 if (is_imm_encodeable(op2)) {
239 ir_node *new_op1 = be_transform_node(op1);
240 return new_imm(dbgi, block, new_op1, get_tarval_long(get_Const_tarval(op2)));
243 new_op2 = be_transform_node(op2);
245 if ((flags & MATCH_COMMUTATIVE) && is_imm_encodeable(op1)) {
246 return new_imm(dbgi, block, new_op2, get_tarval_long(get_Const_tarval(op1)) );
249 new_op1 = be_transform_node(op1);
251 return new_reg(dbgi, block, new_op1, new_op2);
255 * helper function for FP binop operations
257 static ir_node *gen_helper_binfpop(ir_node *node, ir_mode *mode,
258 new_binop_fp_func new_func_single,
259 new_binop_fp_func new_func_double,
260 new_binop_fp_func new_func_quad)
262 ir_node *block = be_transform_node(get_nodes_block(node));
263 ir_node *op1 = get_binop_left(node);
264 ir_node *new_op1 = be_transform_node(op1);
265 ir_node *op2 = get_binop_right(node);
266 ir_node *new_op2 = be_transform_node(op2);
267 dbg_info *dbgi = get_irn_dbg_info(node);
268 unsigned bits = get_mode_size_bits(mode);
272 return new_func_single(dbgi, block, new_op1, new_op2, mode);
274 return new_func_double(dbgi, block, new_op1, new_op2, mode);
276 return new_func_quad(dbgi, block, new_op1, new_op2, mode);
280 panic("unsupported mode %+F for float op", mode);
283 static ir_node *gen_helper_unfpop(ir_node *node, ir_mode *mode,
284 new_unop_fp_func new_func_single,
285 new_unop_fp_func new_func_double,
286 new_unop_fp_func new_func_quad)
288 ir_node *block = be_transform_node(get_nodes_block(node));
289 ir_node *op1 = get_binop_left(node);
290 ir_node *new_op1 = be_transform_node(op1);
291 dbg_info *dbgi = get_irn_dbg_info(node);
292 unsigned bits = get_mode_size_bits(mode);
296 return new_func_single(dbgi, block, new_op1, mode);
298 return new_func_double(dbgi, block, new_op1, mode);
300 return new_func_quad(dbgi, block, new_op1, mode);
304 panic("unsupported mode %+F for float op", mode);
308 * Creates an sparc Add.
310 * @param node FIRM node
311 * @return the created sparc Add node
313 static ir_node *gen_Add(ir_node *node)
315 ir_mode *mode = get_irn_mode(node);
317 if (mode_is_float(mode)) {
318 return gen_helper_binfpop(node, mode, new_bd_sparc_fadd_s,
319 new_bd_sparc_fadd_d, new_bd_sparc_fadd_q);
322 return gen_helper_binop(node, MATCH_COMMUTATIVE, new_bd_sparc_Add_reg, new_bd_sparc_Add_imm);
326 * Creates an sparc Sub.
328 * @param node FIRM node
329 * @return the created sparc Sub node
331 static ir_node *gen_Sub(ir_node *node)
333 ir_mode *mode = get_irn_mode(node);
335 if (mode_is_float(mode)) {
336 return gen_helper_binfpop(node, mode, new_bd_sparc_fsub_s,
337 new_bd_sparc_fsub_d, new_bd_sparc_fsub_q);
340 return gen_helper_binop(node, MATCH_NONE, new_bd_sparc_Sub_reg, new_bd_sparc_Sub_imm);
343 static ir_node *create_ldf(dbg_info *dbgi, ir_node *block, ir_node *ptr,
344 ir_node *mem, ir_mode *mode, ir_entity *entity,
345 int entity_sign, long offset, bool is_frame_entity)
347 unsigned bits = get_mode_size_bits(mode);
348 assert(mode_is_float(mode));
350 return new_bd_sparc_Ldf_s(dbgi, block, ptr, mem, mode, entity,
351 entity_sign, offset, is_frame_entity);
352 } else if (bits == 64) {
353 return new_bd_sparc_Ldf_d(dbgi, block, ptr, mem, mode, entity,
354 entity_sign, offset, is_frame_entity);
357 return new_bd_sparc_Ldf_q(dbgi, block, ptr, mem, mode, entity,
358 entity_sign, offset, is_frame_entity);
362 static ir_node *create_stf(dbg_info *dbgi, ir_node *block, ir_node *ptr,
363 ir_node *value, ir_node *mem, ir_mode *mode,
364 ir_entity *entity, int entity_sign, long offset,
365 bool is_frame_entity)
367 unsigned bits = get_mode_size_bits(mode);
368 assert(mode_is_float(mode));
370 return new_bd_sparc_Stf_s(dbgi, block, ptr, value, mem, mode, entity,
371 entity_sign, offset, is_frame_entity);
372 } else if (bits == 64) {
373 return new_bd_sparc_Stf_d(dbgi, block, ptr, value, mem, mode, entity,
374 entity_sign, offset, is_frame_entity);
377 return new_bd_sparc_Stf_q(dbgi, block, ptr, value, mem, mode, entity,
378 entity_sign, offset, is_frame_entity);
385 * @param node the ir Load node
386 * @return the created sparc Load node
388 static ir_node *gen_Load(ir_node *node)
390 ir_mode *mode = get_Load_mode(node);
391 ir_node *block = be_transform_node(get_nodes_block(node));
392 ir_node *ptr = get_Load_ptr(node);
393 ir_node *new_ptr = be_transform_node(ptr);
394 ir_node *mem = get_Load_mem(node);
395 ir_node *new_mem = be_transform_node(mem);
396 dbg_info *dbgi = get_irn_dbg_info(node);
397 ir_node *new_load = NULL;
399 if (mode_is_float(mode)) {
400 new_load = create_ldf(dbgi, block, new_ptr, new_mem, mode, NULL, 0, 0, false);
402 new_load = new_bd_sparc_Ld(dbgi, block, new_ptr, new_mem, mode, NULL, 0, 0, false);
404 set_irn_pinned(new_load, get_irn_pinned(node));
410 * Transforms a Store.
412 * @param node the ir Store node
413 * @return the created sparc Store node
415 static ir_node *gen_Store(ir_node *node)
417 ir_node *block = be_transform_node(get_nodes_block(node));
418 ir_node *ptr = get_Store_ptr(node);
419 ir_node *new_ptr = be_transform_node(ptr);
420 ir_node *mem = get_Store_mem(node);
421 ir_node *new_mem = be_transform_node(mem);
422 ir_node *val = get_Store_value(node);
423 ir_node *new_val = be_transform_node(val);
424 ir_mode *mode = get_irn_mode(val);
425 dbg_info *dbgi = get_irn_dbg_info(node);
426 ir_node *new_store = NULL;
428 if (mode_is_float(mode)) {
429 new_store = create_stf(dbgi, block, new_ptr, new_val, new_mem, mode, NULL, 0, 0, false);
431 new_store = new_bd_sparc_St(dbgi, block, new_ptr, new_val, new_mem, mode, NULL, 0, 0, false);
433 set_irn_pinned(new_store, get_irn_pinned(node));
439 * Creates an sparc Mul.
440 * returns the lower 32bits of the 64bit multiply result
442 * @return the created sparc Mul node
444 static ir_node *gen_Mul(ir_node *node)
446 ir_mode *mode = get_irn_mode(node);
447 if (mode_is_float(mode)) {
448 return gen_helper_binfpop(node, mode, new_bd_sparc_fmul_s,
449 new_bd_sparc_fmul_d, new_bd_sparc_fmul_q);
452 assert(mode_is_data(mode));
453 return gen_helper_binop(node, MATCH_COMMUTATIVE,
454 new_bd_sparc_Mul_reg, new_bd_sparc_Mul_imm);
458 * Creates an sparc Mulh.
459 * Mulh returns the upper 32bits of a mul instruction
461 * @return the created sparc Mulh node
463 static ir_node *gen_Mulh(ir_node *node)
465 ir_mode *mode = get_irn_mode(node);
467 ir_node *proj_res_hi;
469 if (mode_is_float(mode))
470 panic("FP not supported yet");
473 assert(mode_is_data(mode));
474 mul = gen_helper_binop(node, MATCH_COMMUTATIVE, new_bd_sparc_Mulh_reg, new_bd_sparc_Mulh_imm);
475 //arch_irn_add_flags(mul, arch_irn_flags_modify_flags);
476 proj_res_hi = new_r_Proj(mul, mode_gp, pn_sparc_Mulh_low);
481 * Creates an sparc Div.
483 * @return the created sparc Div node
485 static ir_node *gen_Div(ir_node *node)
487 ir_mode *mode = get_Div_resmode(node);
490 assert(!mode_is_float(mode));
491 if (mode_is_signed(mode)) {
492 res = gen_helper_binop(node, 0, new_bd_sparc_SDiv_reg,
493 new_bd_sparc_SDiv_imm);
495 res = gen_helper_binop(node, 0, new_bd_sparc_UDiv_reg,
496 new_bd_sparc_UDiv_imm);
501 static ir_node *gen_Quot(ir_node *node)
503 ir_mode *mode = get_Quot_resmode(node);
504 assert(mode_is_float(mode));
505 return gen_helper_binfpop(node, mode, new_bd_sparc_fdiv_s,
506 new_bd_sparc_fdiv_d, new_bd_sparc_fdiv_q);
509 static ir_node *gen_Abs(ir_node *node)
511 ir_mode *const mode = get_irn_mode(node);
513 if (mode_is_float(mode)) {
514 return gen_helper_unfpop(node, mode, new_bd_sparc_fabs_s,
515 new_bd_sparc_fabs_d, new_bd_sparc_fabs_q);
517 ir_node *const block = be_transform_node(get_nodes_block(node));
518 dbg_info *const dbgi = get_irn_dbg_info(node);
519 ir_node *const op = get_Abs_op(node);
520 ir_node *const new_op = be_transform_node(op);
521 ir_node *const sra = new_bd_sparc_Sra_imm(dbgi, block, new_op, 31);
522 ir_node *const xor = new_bd_sparc_Xor_reg(dbgi, block, new_op, sra);
523 ir_node *const sub = new_bd_sparc_Sub_reg(dbgi, block, xor, sra);
528 static ir_node *get_g0(void)
530 return be_prolog_get_reg_value(abihelper, &sparc_gp_regs[REG_G0]);
534 * Transforms a Not node.
536 * @return the created sparc Not node
538 static ir_node *gen_Not(ir_node *node)
540 dbg_info *dbgi = get_irn_dbg_info(node);
541 ir_node *block = be_transform_node(get_nodes_block(node));
542 ir_node *op = get_Not_op(node);
543 ir_node *new_op = be_transform_node(op);
544 ir_node *zero = get_g0();
546 return new_bd_sparc_XNor_reg(dbgi, block, zero, new_op);
549 static ir_node *gen_And(ir_node *node)
551 return gen_helper_binop(node, MATCH_COMMUTATIVE, new_bd_sparc_And_reg, new_bd_sparc_And_imm);
554 static ir_node *gen_Or(ir_node *node)
556 return gen_helper_binop(node, MATCH_COMMUTATIVE, new_bd_sparc_Or_reg, new_bd_sparc_Or_imm);
559 static ir_node *gen_Eor(ir_node *node)
561 return gen_helper_binop(node, MATCH_COMMUTATIVE, new_bd_sparc_Xor_reg, new_bd_sparc_Xor_imm);
564 static ir_node *gen_Shl(ir_node *node)
566 return gen_helper_binop(node, MATCH_NONE, new_bd_sparc_Sll_reg, new_bd_sparc_Sll_imm);
569 static ir_node *gen_Shr(ir_node *node)
571 return gen_helper_binop(node, MATCH_NONE, new_bd_sparc_Slr_reg, new_bd_sparc_Slr_imm);
574 static ir_node *gen_Shrs(ir_node *node)
576 return gen_helper_binop(node, MATCH_NONE, new_bd_sparc_Sra_reg, new_bd_sparc_Sra_imm);
580 * Transforms a Minus node.
582 static ir_node *gen_Minus(ir_node *node)
584 ir_mode *mode = get_irn_mode(node);
591 if (mode_is_float(mode)) {
592 return gen_helper_unfpop(node, mode, new_bd_sparc_fneg_s,
593 new_bd_sparc_fneg_d, new_bd_sparc_fneg_q);
595 block = be_transform_node(get_nodes_block(node));
596 dbgi = get_irn_dbg_info(node);
597 op = get_Minus_op(node);
598 new_op = be_transform_node(op);
600 return new_bd_sparc_Sub_reg(dbgi, block, zero, new_op);
603 static ir_node *make_addr(dbg_info *dbgi, ir_entity *entity)
605 ir_node *block = get_irg_start_block(current_ir_graph);
606 ir_node *node = new_bd_sparc_SymConst(dbgi, block, entity);
607 be_dep_on_frame(node);
612 * Create an entity for a given (floating point) tarval
614 static ir_entity *create_float_const_entity(tarval *tv)
616 ir_entity *entity = (ir_entity*) pmap_get(env_cg->constants, tv);
617 ir_initializer_t *initializer;
625 mode = get_tarval_mode(tv);
626 type = get_type_for_mode(mode);
627 glob = get_glob_type();
628 entity = new_entity(glob, id_unique("C%u"), type);
629 set_entity_visibility(entity, ir_visibility_private);
630 add_entity_linkage(entity, IR_LINKAGE_CONSTANT);
632 initializer = create_initializer_tarval(tv);
633 set_entity_initializer(entity, initializer);
635 pmap_insert(env_cg->constants, tv, entity);
640 * Transforms a Const node.
642 * @param node the ir Const node
643 * @return The transformed sparc node.
645 static ir_node *gen_Const(ir_node *node)
647 ir_node *block = be_transform_node(get_nodes_block(node));
648 ir_mode *mode = get_irn_mode(node);
650 if (mode_is_float(mode)) {
651 dbg_info *dbgi = get_irn_dbg_info(node);
652 tarval *tv = get_Const_tarval(node);
653 ir_entity *entity = create_float_const_entity(tv);
654 ir_node *addr = make_addr(dbgi, entity);
655 ir_node *mem = new_NoMem();
657 = create_ldf(dbgi, block, addr, mem, mode, NULL, 0, 0, false);
658 ir_node *proj = new_Proj(new_op, mode, pn_sparc_Ldf_res);
660 set_irn_pinned(new_op, op_pin_state_floats);
664 /* use the 0 register instead of a 0-constant */
665 if (is_Const_null(node)) {
669 return create_const_graph(node, block);
672 static ir_mode *get_cmp_mode(ir_node *b_value)
677 if (!is_Proj(b_value))
678 panic("can't determine cond signednes");
679 pred = get_Proj_pred(b_value);
681 panic("can't determine cond signednes (no cmp)");
682 op = get_Cmp_left(pred);
683 return get_irn_mode(op);
687 * Transform Cond nodes
689 static ir_node *gen_Cond(ir_node *node)
691 ir_node *selector = get_Cond_selector(node);
692 ir_mode *mode = get_irn_mode(selector);
701 if (mode != mode_b) {
702 panic("SwitchJmp not supported yet");
705 // regular if/else jumps
706 assert(is_Proj(selector));
707 assert(is_Cmp(get_Proj_pred(selector)));
709 cmp_mode = get_cmp_mode(selector);
711 block = be_transform_node(get_nodes_block(node));
712 dbgi = get_irn_dbg_info(node);
713 flag_node = be_transform_node(get_Proj_pred(selector));
714 pnc = get_Proj_proj(selector);
715 is_unsigned = !mode_is_signed(cmp_mode);
716 if (mode_is_float(cmp_mode)) {
717 assert(!is_unsigned);
718 return new_bd_sparc_fbfcc(dbgi, block, flag_node, pnc);
720 return new_bd_sparc_Bicc(dbgi, block, flag_node, pnc, is_unsigned);
727 static ir_node *gen_Cmp(ir_node *node)
729 ir_node *block = be_transform_node(get_nodes_block(node));
730 ir_node *op1 = get_Cmp_left(node);
731 ir_node *op2 = get_Cmp_right(node);
732 ir_mode *cmp_mode = get_irn_mode(op1);
733 dbg_info *dbgi = get_irn_dbg_info(node);
734 ir_node *new_op1 = be_transform_node(op1);
735 ir_node *new_op2 = be_transform_node(op2);
736 assert(get_irn_mode(op2) == cmp_mode);
738 if (mode_is_float(cmp_mode)) {
739 unsigned bits = get_mode_size_bits(cmp_mode);
741 return new_bd_sparc_fcmp_s(dbgi, block, new_op1, new_op2, cmp_mode);
742 } else if (bits == 64) {
743 return new_bd_sparc_fcmp_d(dbgi, block, new_op1, new_op2, cmp_mode);
746 return new_bd_sparc_fcmp_q(dbgi, block, new_op1, new_op2, cmp_mode);
750 /* integer compare */
751 new_op1 = gen_extension(dbgi, block, new_op1, cmp_mode);
752 new_op2 = gen_extension(dbgi, block, new_op2, cmp_mode);
753 return new_bd_sparc_Cmp_reg(dbgi, block, new_op1, new_op2);
757 * Transforms a SymConst node.
759 static ir_node *gen_SymConst(ir_node *node)
761 ir_entity *entity = get_SymConst_entity(node);
762 dbg_info *dbgi = get_irn_dbg_info(node);
764 return make_addr(dbgi, entity);
767 static ir_node *create_fftof(dbg_info *dbgi, ir_node *block, ir_node *op,
768 ir_mode *src_mode, ir_mode *dst_mode)
770 unsigned src_bits = get_mode_size_bits(src_mode);
771 unsigned dst_bits = get_mode_size_bits(dst_mode);
772 if (src_bits == 32) {
773 if (dst_bits == 64) {
774 return new_bd_sparc_fftof_s_d(dbgi, block, op, src_mode, dst_mode);
776 assert(dst_bits == 128);
777 return new_bd_sparc_fftof_s_q(dbgi, block, op, src_mode, dst_mode);
779 } else if (src_bits == 64) {
780 if (dst_bits == 32) {
781 return new_bd_sparc_fftof_d_s(dbgi, block, op, src_mode, dst_mode);
783 assert(dst_bits == 128);
784 return new_bd_sparc_fftof_d_q(dbgi, block, op, src_mode, dst_mode);
787 assert(src_bits == 128);
788 if (dst_bits == 32) {
789 return new_bd_sparc_fftof_q_s(dbgi, block, op, src_mode, dst_mode);
791 assert(dst_bits == 64);
792 return new_bd_sparc_fftof_q_d(dbgi, block, op, src_mode, dst_mode);
797 static ir_node *create_ftoi(dbg_info *dbgi, ir_node *block, ir_node *op,
800 unsigned bits = get_mode_size_bits(src_mode);
802 return new_bd_sparc_fftoi_s(dbgi, block, op, src_mode);
803 } else if (bits == 64) {
804 return new_bd_sparc_fftoi_d(dbgi, block, op, src_mode);
807 return new_bd_sparc_fftoi_q(dbgi, block, op, src_mode);
811 static ir_node *create_itof(dbg_info *dbgi, ir_node *block, ir_node *op,
814 unsigned bits = get_mode_size_bits(dst_mode);
816 return new_bd_sparc_fitof_s(dbgi, block, op, dst_mode);
817 } else if (bits == 64) {
818 return new_bd_sparc_fitof_d(dbgi, block, op, dst_mode);
821 return new_bd_sparc_fitof_q(dbgi, block, op, dst_mode);
826 * Transforms a Conv node.
829 static ir_node *gen_Conv(ir_node *node)
831 ir_node *block = be_transform_node(get_nodes_block(node));
832 ir_node *op = get_Conv_op(node);
833 ir_node *new_op = be_transform_node(op);
834 ir_mode *src_mode = get_irn_mode(op);
835 ir_mode *dst_mode = get_irn_mode(node);
836 dbg_info *dbg = get_irn_dbg_info(node);
838 int src_bits = get_mode_size_bits(src_mode);
839 int dst_bits = get_mode_size_bits(dst_mode);
841 if (src_mode == dst_mode)
844 if (mode_is_float(src_mode) || mode_is_float(dst_mode)) {
845 assert((src_bits <= 64 && dst_bits <= 64) && "quad FP not implemented");
847 if (mode_is_float(src_mode)) {
848 if (mode_is_float(dst_mode)) {
849 /* float -> float conv */
850 return create_fftof(dbg, block, new_op, src_mode, dst_mode);
852 /* float -> int conv */
853 if (!mode_is_signed(dst_mode))
854 panic("float to unsigned not implemented yet");
855 return create_ftoi(dbg, block, new_op, src_mode);
858 /* int -> float conv */
859 if (!mode_is_signed(src_mode))
860 panic("unsigned to float not implemented yet");
861 return create_itof(dbg, block, new_op, dst_mode);
863 } else { /* complete in gp registers */
867 if (src_bits == dst_bits) {
868 /* kill unnecessary conv */
872 if (src_bits < dst_bits) {
880 if (upper_bits_clean(new_op, min_mode)) {
884 if (mode_is_signed(min_mode)) {
885 return gen_sign_extension(dbg, block, new_op, min_bits);
887 return gen_zero_extension(dbg, block, new_op, min_bits);
892 static ir_node *gen_Unknown(ir_node *node)
894 ir_node *block = get_nodes_block(node);
895 ir_node *new_block = be_transform_node(block);
896 dbg_info *dbgi = get_irn_dbg_info(node);
898 /* just produce a 0 */
899 ir_mode *mode = get_irn_mode(node);
900 if (mode_is_float(mode)) {
901 panic("FP not implemented");
902 be_dep_on_frame(node);
904 } else if (mode_needs_gp_reg(mode)) {
905 return create_const_graph_value(dbgi, new_block, 0);
908 panic("Unexpected Unknown mode");
912 * Produces the type which sits between the stack args and the locals on the
915 static ir_type *sparc_get_between_type(void)
917 static ir_type *between_type = NULL;
919 if (between_type == NULL) {
920 between_type = new_type_class(new_id_from_str("sparc_between_type"));
921 set_type_size_bytes(between_type, SPARC_MIN_STACKSIZE);
927 static void create_stacklayout(ir_graph *irg)
929 ir_entity *entity = get_irg_entity(irg);
930 ir_type *function_type = get_entity_type(entity);
931 be_stack_layout_t *layout = be_get_irg_stack_layout(irg);
936 /* calling conventions must be decided by now */
937 assert(cconv != NULL);
939 /* construct argument type */
940 arg_type = new_type_struct(id_mangle_u(get_entity_ident(entity), new_id_from_chars("arg_type", 8)));
941 n_params = get_method_n_params(function_type);
942 for (p = 0; p < n_params; ++p) {
943 reg_or_stackslot_t *param = &cconv->parameters[p];
947 if (param->type == NULL)
950 snprintf(buf, sizeof(buf), "param_%d", p);
951 id = new_id_from_str(buf);
952 param->entity = new_entity(arg_type, id, param->type);
953 set_entity_offset(param->entity, param->offset);
956 memset(layout, 0, sizeof(*layout));
958 layout->frame_type = get_irg_frame_type(irg);
959 layout->between_type = sparc_get_between_type();
960 layout->arg_type = arg_type;
961 layout->initial_offset = 0;
962 layout->initial_bias = 0;
963 layout->stack_dir = -1;
964 layout->sp_relative = false;
966 assert(N_FRAME_TYPES == 3);
967 layout->order[0] = layout->frame_type;
968 layout->order[1] = layout->between_type;
969 layout->order[2] = layout->arg_type;
973 * transform the start node to the prolog code + initial barrier
975 static ir_node *gen_Start(ir_node *node)
977 ir_graph *irg = get_irn_irg(node);
978 ir_entity *entity = get_irg_entity(irg);
979 ir_type *function_type = get_entity_type(entity);
980 ir_node *block = get_nodes_block(node);
981 ir_node *new_block = be_transform_node(block);
982 dbg_info *dbgi = get_irn_dbg_info(node);
991 /* stackpointer is important at function prolog */
992 be_prolog_add_reg(abihelper, sp_reg,
993 arch_register_req_type_produces_sp | arch_register_req_type_ignore);
994 be_prolog_add_reg(abihelper, &sparc_gp_regs[REG_G0],
995 arch_register_req_type_ignore);
996 /* function parameters in registers */
997 for (i = 0; i < get_method_n_params(function_type); ++i) {
998 const reg_or_stackslot_t *param = &cconv->parameters[i];
999 if (param->reg0 != NULL)
1000 be_prolog_add_reg(abihelper, param->reg0, 0);
1001 if (param->reg1 != NULL)
1002 be_prolog_add_reg(abihelper, param->reg1, 0);
1005 start = be_prolog_create_start(abihelper, dbgi, new_block);
1007 mem = be_prolog_get_memory(abihelper);
1008 sp = be_prolog_get_reg_value(abihelper, sp_reg);
1009 save = new_bd_sparc_Save(NULL, block, sp, mem, SPARC_MIN_STACKSIZE);
1010 fp = new_r_Proj(save, mode_gp, pn_sparc_Save_frame);
1011 sp = new_r_Proj(save, mode_gp, pn_sparc_Save_stack);
1012 mem = new_r_Proj(save, mode_M, pn_sparc_Save_mem);
1013 arch_set_irn_register(fp, fp_reg);
1014 arch_set_irn_register(sp, sp_reg);
1016 be_prolog_add_reg(abihelper, fp_reg, arch_register_req_type_ignore);
1017 be_prolog_set_reg_value(abihelper, fp_reg, fp);
1019 sp = be_new_IncSP(sp_reg, new_block, sp, BE_STACK_FRAME_SIZE_EXPAND, 0);
1020 be_prolog_set_reg_value(abihelper, sp_reg, sp);
1021 be_prolog_set_memory(abihelper, mem);
1023 barrier = be_prolog_create_barrier(abihelper, new_block);
1028 static ir_node *get_stack_pointer_for(ir_node *node)
1030 /* get predecessor in stack_order list */
1031 ir_node *stack_pred = be_get_stack_pred(abihelper, node);
1032 ir_node *stack_pred_transformed;
1035 if (stack_pred == NULL) {
1036 /* first stack user in the current block. We can simply use the
1037 * initial sp_proj for it */
1038 ir_node *sp_proj = be_prolog_get_reg_value(abihelper, sp_reg);
1042 stack_pred_transformed = be_transform_node(stack_pred);
1043 stack = pmap_get(node_to_stack, stack_pred);
1044 if (stack == NULL) {
1045 return get_stack_pointer_for(stack_pred);
1052 * transform a Return node into epilogue code + return statement
1054 static ir_node *gen_Return(ir_node *node)
1056 ir_node *block = get_nodes_block(node);
1057 ir_node *new_block = be_transform_node(block);
1058 dbg_info *dbgi = get_irn_dbg_info(node);
1059 ir_node *mem = get_Return_mem(node);
1060 ir_node *new_mem = be_transform_node(mem);
1061 ir_node *sp_proj = get_stack_pointer_for(node);
1062 int n_res = get_Return_n_ress(node);
1067 be_epilog_begin(abihelper);
1068 be_epilog_set_memory(abihelper, new_mem);
1069 /* connect stack pointer with initial stack pointer. fix_stack phase
1070 will later serialize all stack pointer adjusting nodes */
1071 be_epilog_add_reg(abihelper, sp_reg,
1072 arch_register_req_type_produces_sp | arch_register_req_type_ignore,
1076 for (i = 0; i < n_res; ++i) {
1077 ir_node *res_value = get_Return_res(node, i);
1078 ir_node *new_res_value = be_transform_node(res_value);
1079 const reg_or_stackslot_t *slot = &cconv->results[i];
1080 const arch_register_t *reg = slot->reg0;
1081 assert(slot->reg1 == NULL);
1082 be_epilog_add_reg(abihelper, reg, 0, new_res_value);
1085 /* create the barrier before the epilog code */
1086 be_epilog_create_barrier(abihelper, new_block);
1088 /* epilog code: an incsp */
1089 sp_proj = be_epilog_get_reg_value(abihelper, sp_reg);
1090 incsp = be_new_IncSP(sp_reg, new_block, sp_proj,
1091 BE_STACK_FRAME_SIZE_SHRINK, 0);
1092 be_epilog_set_reg_value(abihelper, sp_reg, incsp);
1094 bereturn = be_epilog_create_return(abihelper, dbgi, new_block);
1099 static ir_node *bitcast_int_to_float(dbg_info *dbgi, ir_node *block,
1100 ir_node *value0, ir_node *value1)
1102 ir_graph *irg = current_ir_graph;
1103 ir_node *sp = get_irg_frame(irg);
1104 ir_node *nomem = new_NoMem();
1105 ir_node *st = new_bd_sparc_St(dbgi, block, sp, value0, nomem, mode_gp,
1110 set_irn_pinned(st, op_pin_state_floats);
1112 if (value1 != NULL) {
1113 ir_node *st1 = new_bd_sparc_St(dbgi, block, sp, value1, nomem, mode_gp,
1115 ir_node *in[2] = { st, st1 };
1116 ir_node *sync = new_r_Sync(block, 2, in);
1117 set_irn_pinned(st1, op_pin_state_floats);
1125 ldf = create_ldf(dbgi, block, sp, mem, mode, NULL, 0, 0, true);
1126 set_irn_pinned(ldf, op_pin_state_floats);
1128 return new_Proj(ldf, mode, pn_sparc_Ldf_res);
1131 static void bitcast_float_to_int(dbg_info *dbgi, ir_node *block,
1132 ir_node *node, ir_mode *float_mode,
1135 ir_graph *irg = current_ir_graph;
1136 ir_node *stack = get_irg_frame(irg);
1137 ir_node *nomem = new_NoMem();
1138 ir_node *stf = create_stf(dbgi, block, stack, node, nomem, float_mode,
1140 int bits = get_mode_size_bits(float_mode);
1142 set_irn_pinned(stf, op_pin_state_floats);
1144 ld = new_bd_sparc_Ld(dbgi, block, stack, stf, mode_gp, NULL, 0, 0, true);
1145 set_irn_pinned(ld, op_pin_state_floats);
1146 result[0] = new_Proj(ld, mode_gp, pn_sparc_Ld_res);
1149 ir_node *ld2 = new_bd_sparc_Ld(dbgi, block, stack, stf, mode_gp,
1151 set_irn_pinned(ld, op_pin_state_floats);
1152 result[1] = new_Proj(ld2, mode_gp, pn_sparc_Ld_res);
1154 arch_irn_add_flags(ld, sparc_arch_irn_flag_needs_64bit_spillslot);
1155 arch_irn_add_flags(ld2, sparc_arch_irn_flag_needs_64bit_spillslot);
1162 static ir_node *gen_Call(ir_node *node)
1164 ir_graph *irg = get_irn_irg(node);
1165 ir_node *callee = get_Call_ptr(node);
1166 ir_node *block = get_nodes_block(node);
1167 ir_node *new_block = be_transform_node(block);
1168 ir_node *mem = get_Call_mem(node);
1169 ir_node *new_mem = be_transform_node(mem);
1170 dbg_info *dbgi = get_irn_dbg_info(node);
1171 ir_type *type = get_Call_type(node);
1172 int n_params = get_Call_n_params(node);
1173 int n_param_regs = sizeof(param_regs)/sizeof(param_regs[0]);
1174 /* max inputs: memory, callee, register arguments */
1175 int max_inputs = 2 + n_param_regs;
1176 ir_node **in = ALLOCAN(ir_node*, max_inputs);
1177 ir_node **sync_ins = ALLOCAN(ir_node*, max_inputs);
1178 struct obstack *obst = be_get_be_obst(irg);
1179 const arch_register_req_t **in_req
1180 = OALLOCNZ(obst, const arch_register_req_t*, max_inputs);
1181 calling_convention_t *cconv
1182 = sparc_decide_calling_convention(type, true);
1186 = sizeof(caller_saves)/sizeof(caller_saves[0]);
1187 ir_entity *entity = NULL;
1188 ir_node *new_frame = get_stack_pointer_for(node);
1197 assert(n_params == get_method_n_params(type));
1199 /* construct arguments */
1202 in_req[in_arity] = arch_no_register_req;
1206 /* stack pointer input */
1207 /* construct an IncSP -> we have to always be sure that the stack is
1208 * aligned even if we don't push arguments on it */
1209 incsp = be_new_IncSP(sp_reg, new_block, new_frame,
1210 cconv->param_stack_size, 1);
1211 in_req[in_arity] = sp_reg->single_req;
1212 in[in_arity] = incsp;
1216 for (p = 0; p < n_params; ++p) {
1217 ir_node *value = get_Call_param(node, p);
1218 ir_node *new_value = be_transform_node(value);
1219 const reg_or_stackslot_t *param = &cconv->parameters[p];
1220 ir_type *param_type = get_method_param_type(type, p);
1221 ir_mode *mode = get_type_mode(param_type);
1222 ir_node *new_values[2];
1225 if (mode_is_float(mode) && param->reg0 != NULL) {
1226 unsigned size_bits = get_mode_size_bits(mode);
1227 assert(size_bits <= 64);
1228 bitcast_float_to_int(dbgi, new_block, new_value, mode, new_values);
1230 new_values[0] = new_value;
1231 new_values[1] = NULL;
1234 /* put value into registers */
1235 if (param->reg0 != NULL) {
1236 in[in_arity] = new_values[0];
1237 in_req[in_arity] = param->reg0->single_req;
1239 if (new_values[1] == NULL)
1242 if (param->reg1 != NULL) {
1243 assert(new_values[1] != NULL);
1244 in[in_arity] = new_values[1];
1245 in_req[in_arity] = param->reg1->single_req;
1250 /* we need a store if we're here */
1251 if (new_values[1] != NULL) {
1252 new_value = new_values[1];
1256 /* create a parameter frame if necessary */
1257 if (mode_is_float(mode)) {
1258 str = create_stf(dbgi, new_block, incsp, new_value, new_mem,
1259 mode, NULL, 0, param->offset, true);
1261 str = new_bd_sparc_St(dbgi, new_block, incsp, new_value, new_mem,
1262 mode, NULL, 0, param->offset, true);
1264 set_irn_pinned(str, op_pin_state_floats);
1265 sync_ins[sync_arity++] = str;
1267 assert(in_arity <= max_inputs);
1269 /* construct memory input */
1270 if (sync_arity == 0) {
1271 in[mem_pos] = new_mem;
1272 } else if (sync_arity == 1) {
1273 in[mem_pos] = sync_ins[0];
1275 in[mem_pos] = new_rd_Sync(NULL, new_block, sync_arity, sync_ins);
1278 if (is_SymConst(callee)) {
1279 entity = get_SymConst_entity(callee);
1281 in[in_arity] = be_transform_node(callee);
1282 in_req[in_arity] = sparc_reg_classes[CLASS_sparc_gp].class_req;
1290 out_arity = 1 + n_caller_saves;
1292 /* create call node */
1293 if (entity != NULL) {
1294 res = new_bd_sparc_Call_imm(dbgi, new_block, in_arity, in, out_arity,
1297 res = new_bd_sparc_Call_reg(dbgi, new_block, in_arity, in, out_arity);
1299 set_sparc_in_req_all(res, in_req);
1301 /* create output register reqs */
1303 arch_set_out_register_req(res, o++, arch_no_register_req);
1304 for (i = 0; i < n_caller_saves; ++i) {
1305 const arch_register_t *reg = caller_saves[i];
1306 arch_set_out_register_req(res, o++, reg->single_req);
1308 assert(o == out_arity);
1310 /* copy pinned attribute */
1311 set_irn_pinned(res, get_irn_pinned(node));
1313 /* IncSP to destroy the call stackframe */
1314 incsp = be_new_IncSP(sp_reg, new_block, incsp, -cconv->param_stack_size, 0);
1315 /* if we are the last IncSP producer in a block then we have to keep
1317 * Note: This here keeps all producers which is more than necessary */
1318 add_irn_dep(incsp, res);
1321 pmap_insert(node_to_stack, node, incsp);
1323 sparc_free_calling_convention(cconv);
1327 static ir_node *gen_Sel(ir_node *node)
1329 dbg_info *dbgi = get_irn_dbg_info(node);
1330 ir_node *block = get_nodes_block(node);
1331 ir_node *new_block = be_transform_node(block);
1332 ir_node *ptr = get_Sel_ptr(node);
1333 ir_node *new_ptr = be_transform_node(ptr);
1334 ir_entity *entity = get_Sel_entity(node);
1336 /* must be the frame pointer all other sels must have been lowered
1338 assert(is_Proj(ptr) && is_Start(get_Proj_pred(ptr)));
1339 /* we should not have value types from parameters anymore - they should be
1341 assert(get_entity_owner(entity) !=
1342 get_method_value_param_type(get_entity_type(get_irg_entity(get_irn_irg(node)))));
1344 return new_bd_sparc_FrameAddr(dbgi, new_block, new_ptr, entity);
1347 static const arch_register_req_t float1_req = {
1348 arch_register_req_type_normal,
1349 &sparc_reg_classes[CLASS_sparc_fp],
1355 static const arch_register_req_t float2_req = {
1356 arch_register_req_type_normal | arch_register_req_type_aligned,
1357 &sparc_reg_classes[CLASS_sparc_fp],
1363 static const arch_register_req_t float4_req = {
1364 arch_register_req_type_normal | arch_register_req_type_aligned,
1365 &sparc_reg_classes[CLASS_sparc_fp],
1373 static const arch_register_req_t *get_float_req(ir_mode *mode)
1375 unsigned bits = get_mode_size_bits(mode);
1377 assert(mode_is_float(mode));
1380 } else if (bits == 64) {
1383 assert(bits == 128);
1389 * Transform some Phi nodes
1391 static ir_node *gen_Phi(ir_node *node)
1393 const arch_register_req_t *req;
1394 ir_node *block = be_transform_node(get_nodes_block(node));
1395 ir_graph *irg = current_ir_graph;
1396 dbg_info *dbgi = get_irn_dbg_info(node);
1397 ir_mode *mode = get_irn_mode(node);
1400 if (mode_needs_gp_reg(mode)) {
1401 /* we shouldn't have any 64bit stuff around anymore */
1402 assert(get_mode_size_bits(mode) <= 32);
1403 /* all integer operations are on 32bit registers now */
1405 req = sparc_reg_classes[CLASS_sparc_gp].class_req;
1406 } else if (mode_is_float(mode)) {
1408 req = get_float_req(mode);
1410 req = arch_no_register_req;
1413 /* phi nodes allow loops, so we use the old arguments for now
1414 * and fix this later */
1415 phi = new_ir_node(dbgi, irg, block, op_Phi, mode, get_irn_arity(node), get_irn_in(node) + 1);
1416 copy_node_attr(irg, node, phi);
1417 be_duplicate_deps(node, phi);
1418 arch_set_out_register_req(phi, 0, req);
1419 be_enqueue_preds(node);
1424 * Transform a Proj from a Load.
1426 static ir_node *gen_Proj_Load(ir_node *node)
1428 ir_node *load = get_Proj_pred(node);
1429 ir_node *new_load = be_transform_node(load);
1430 dbg_info *dbgi = get_irn_dbg_info(node);
1431 long pn = get_Proj_proj(node);
1433 /* renumber the proj */
1434 switch (get_sparc_irn_opcode(new_load)) {
1436 /* handle all gp loads equal: they have the same proj numbers. */
1437 if (pn == pn_Load_res) {
1438 return new_rd_Proj(dbgi, new_load, mode_gp, pn_sparc_Ld_res);
1439 } else if (pn == pn_Load_M) {
1440 return new_rd_Proj(dbgi, new_load, mode_M, pn_sparc_Ld_M);
1444 if (pn == pn_Load_res) {
1445 return new_rd_Proj(dbgi, new_load, mode_fp, pn_sparc_Ldf_res);
1446 } else if (pn == pn_Load_M) {
1447 return new_rd_Proj(dbgi, new_load, mode_M, pn_sparc_Ld_M);
1453 panic("Unsupported Proj from Load");
1456 static ir_node *gen_Proj_Store(ir_node *node)
1458 ir_node *store = get_Proj_pred(node);
1459 ir_node *new_store = be_transform_node(store);
1460 long pn = get_Proj_proj(node);
1462 /* renumber the proj */
1463 switch (get_sparc_irn_opcode(new_store)) {
1465 if (pn == pn_Store_M) {
1470 if (pn == pn_Store_M) {
1477 panic("Unsupported Proj from Store");
1481 * Transform the Projs from a Cmp.
1483 static ir_node *gen_Proj_Cmp(ir_node *node)
1486 panic("not implemented");
1490 * transform Projs from a Div
1492 static ir_node *gen_Proj_Div(ir_node *node)
1494 ir_node *pred = get_Proj_pred(node);
1495 ir_node *new_pred = be_transform_node(pred);
1496 long pn = get_Proj_proj(node);
1498 assert(is_sparc_SDiv(new_pred) || is_sparc_UDiv(new_pred));
1499 assert(pn_sparc_SDiv_res == pn_sparc_UDiv_res);
1500 assert(pn_sparc_SDiv_M == pn_sparc_UDiv_M);
1503 return new_r_Proj(new_pred, mode_gp, pn_sparc_SDiv_res);
1505 return new_r_Proj(new_pred, mode_gp, pn_sparc_SDiv_M);
1509 panic("Unsupported Proj from Div");
1512 static ir_node *gen_Proj_Quot(ir_node *node)
1514 ir_node *pred = get_Proj_pred(node);
1515 ir_node *new_pred = be_transform_node(pred);
1516 long pn = get_Proj_proj(node);
1518 assert(is_sparc_fdiv(new_pred));
1521 return new_r_Proj(new_pred, mode_gp, pn_sparc_fdiv_res);
1523 return new_r_Proj(new_pred, mode_gp, pn_sparc_fdiv_M);
1527 panic("Unsupported Proj from Quot");
1530 static ir_node *gen_Proj_Start(ir_node *node)
1532 ir_node *block = get_nodes_block(node);
1533 ir_node *new_block = be_transform_node(block);
1534 ir_node *barrier = be_transform_node(get_Proj_pred(node));
1535 long pn = get_Proj_proj(node);
1537 switch ((pn_Start) pn) {
1538 case pn_Start_X_initial_exec:
1539 /* exchange ProjX with a jump */
1540 return new_bd_sparc_Ba(NULL, new_block);
1542 return new_r_Proj(barrier, mode_M, 0);
1543 case pn_Start_T_args:
1545 case pn_Start_P_frame_base:
1546 return be_prolog_get_reg_value(abihelper, fp_reg);
1547 case pn_Start_P_tls:
1552 panic("Unexpected start proj: %ld\n", pn);
1555 static ir_node *gen_Proj_Proj_Start(ir_node *node)
1557 long pn = get_Proj_proj(node);
1558 ir_node *block = get_nodes_block(node);
1559 ir_node *new_block = be_transform_node(block);
1560 ir_entity *entity = get_irg_entity(current_ir_graph);
1561 ir_type *method_type = get_entity_type(entity);
1562 ir_type *param_type = get_method_param_type(method_type, pn);
1563 const reg_or_stackslot_t *param;
1565 /* Proj->Proj->Start must be a method argument */
1566 assert(get_Proj_proj(get_Proj_pred(node)) == pn_Start_T_args);
1568 param = &cconv->parameters[pn];
1570 if (param->reg0 != NULL) {
1571 /* argument transmitted in register */
1572 ir_mode *mode = get_type_mode(param_type);
1573 const arch_register_t *reg = param->reg0;
1574 ir_node *value = be_prolog_get_reg_value(abihelper, reg);
1576 if (mode_is_float(mode)) {
1577 ir_node *value1 = NULL;
1579 if (param->reg1 != NULL) {
1580 value1 = be_prolog_get_reg_value(abihelper, param->reg1);
1581 } else if (param->entity != NULL) {
1582 ir_node *fp = be_prolog_get_reg_value(abihelper, fp_reg);
1583 ir_node *mem = be_prolog_get_memory(abihelper);
1584 ir_node *ld = new_bd_sparc_Ld(NULL, new_block, fp, mem,
1585 mode_gp, param->entity,
1587 value1 = new_Proj(ld, mode_gp, pn_sparc_Ld_res);
1590 /* convert integer value to float */
1591 value = bitcast_int_to_float(NULL, new_block, value, value1);
1595 /* argument transmitted on stack */
1596 ir_node *fp = be_prolog_get_reg_value(abihelper, fp_reg);
1597 ir_node *mem = be_prolog_get_memory(abihelper);
1598 ir_mode *mode = get_type_mode(param->type);
1602 if (mode_is_float(mode)) {
1603 load = create_ldf(NULL, new_block, fp, mem, mode,
1604 param->entity, 0, 0, true);
1605 value = new_r_Proj(load, mode_fp, pn_sparc_Ldf_res);
1607 load = new_bd_sparc_Ld(NULL, new_block, fp, mem, mode,
1608 param->entity, 0, 0, true);
1609 value = new_r_Proj(load, mode_gp, pn_sparc_Ld_res);
1611 set_irn_pinned(load, op_pin_state_floats);
1617 static ir_node *gen_Proj_Call(ir_node *node)
1619 long pn = get_Proj_proj(node);
1620 ir_node *call = get_Proj_pred(node);
1621 ir_node *new_call = be_transform_node(call);
1623 switch ((pn_Call) pn) {
1625 return new_r_Proj(new_call, mode_M, 0);
1626 case pn_Call_X_regular:
1627 case pn_Call_X_except:
1628 case pn_Call_T_result:
1629 case pn_Call_P_value_res_base:
1633 panic("Unexpected Call proj %ld\n", pn);
1637 * Finds number of output value of a mode_T node which is constrained to
1638 * a single specific register.
1640 static int find_out_for_reg(ir_node *node, const arch_register_t *reg)
1642 int n_outs = arch_irn_get_n_outs(node);
1645 for (o = 0; o < n_outs; ++o) {
1646 const arch_register_req_t *req = arch_get_out_register_req(node, o);
1647 if (req == reg->single_req)
1653 static ir_node *gen_Proj_Proj_Call(ir_node *node)
1655 long pn = get_Proj_proj(node);
1656 ir_node *call = get_Proj_pred(get_Proj_pred(node));
1657 ir_node *new_call = be_transform_node(call);
1658 ir_type *function_type = get_Call_type(call);
1659 calling_convention_t *cconv
1660 = sparc_decide_calling_convention(function_type, true);
1661 const reg_or_stackslot_t *res = &cconv->results[pn];
1662 const arch_register_t *reg = res->reg0;
1666 assert(res->reg0 != NULL && res->reg1 == NULL);
1667 regn = find_out_for_reg(new_call, reg);
1669 panic("Internal error in calling convention for return %+F", node);
1671 mode = res->reg0->reg_class->mode;
1673 sparc_free_calling_convention(cconv);
1675 return new_r_Proj(new_call, mode, regn);
1679 * Transform a Proj node.
1681 static ir_node *gen_Proj(ir_node *node)
1683 ir_node *pred = get_Proj_pred(node);
1685 switch (get_irn_opcode(pred)) {
1687 return gen_Proj_Store(node);
1689 return gen_Proj_Load(node);
1691 return gen_Proj_Call(node);
1693 return gen_Proj_Cmp(node);
1695 return be_duplicate_node(node);
1697 return gen_Proj_Div(node);
1699 return gen_Proj_Quot(node);
1701 return gen_Proj_Start(node);
1703 ir_node *pred_pred = get_Proj_pred(pred);
1704 if (is_Call(pred_pred)) {
1705 return gen_Proj_Proj_Call(node);
1706 } else if (is_Start(pred_pred)) {
1707 return gen_Proj_Proj_Start(node);
1712 panic("code selection didn't expect Proj after %+F\n", pred);
1719 static ir_node *gen_Jmp(ir_node *node)
1721 ir_node *block = get_nodes_block(node);
1722 ir_node *new_block = be_transform_node(block);
1723 dbg_info *dbgi = get_irn_dbg_info(node);
1725 return new_bd_sparc_Ba(dbgi, new_block);
1729 * configure transformation callbacks
1731 void sparc_register_transformers(void)
1733 be_start_transform_setup();
1735 be_set_transform_function(op_Abs, gen_Abs);
1736 be_set_transform_function(op_Add, gen_Add);
1737 be_set_transform_function(op_And, gen_And);
1738 be_set_transform_function(op_Call, gen_Call);
1739 be_set_transform_function(op_Cmp, gen_Cmp);
1740 be_set_transform_function(op_Cond, gen_Cond);
1741 be_set_transform_function(op_Const, gen_Const);
1742 be_set_transform_function(op_Conv, gen_Conv);
1743 be_set_transform_function(op_Div, gen_Div);
1744 be_set_transform_function(op_Eor, gen_Eor);
1745 be_set_transform_function(op_Jmp, gen_Jmp);
1746 be_set_transform_function(op_Load, gen_Load);
1747 be_set_transform_function(op_Minus, gen_Minus);
1748 be_set_transform_function(op_Mul, gen_Mul);
1749 be_set_transform_function(op_Mulh, gen_Mulh);
1750 be_set_transform_function(op_Not, gen_Not);
1751 be_set_transform_function(op_Or, gen_Or);
1752 be_set_transform_function(op_Phi, gen_Phi);
1753 be_set_transform_function(op_Proj, gen_Proj);
1754 be_set_transform_function(op_Quot, gen_Quot);
1755 be_set_transform_function(op_Return, gen_Return);
1756 be_set_transform_function(op_Sel, gen_Sel);
1757 be_set_transform_function(op_Shl, gen_Shl);
1758 be_set_transform_function(op_Shr, gen_Shr);
1759 be_set_transform_function(op_Shrs, gen_Shrs);
1760 be_set_transform_function(op_Start, gen_Start);
1761 be_set_transform_function(op_Store, gen_Store);
1762 be_set_transform_function(op_Sub, gen_Sub);
1763 be_set_transform_function(op_SymConst, gen_SymConst);
1764 be_set_transform_function(op_Unknown, gen_Unknown);
1766 be_set_transform_function(op_sparc_Save, be_duplicate_node);
1769 /* hack to avoid unused fp proj at start barrier */
1770 static void assure_fp_keep(void)
1772 unsigned n_users = 0;
1773 const ir_edge_t *edge;
1774 ir_node *fp_proj = be_prolog_get_reg_value(abihelper, fp_reg);
1776 foreach_out_edge(fp_proj, edge) {
1777 ir_node *succ = get_edge_src_irn(edge);
1778 if (is_End(succ) || is_Anchor(succ))
1784 ir_node *block = get_nodes_block(fp_proj);
1785 ir_node *in[1] = { fp_proj };
1786 be_new_Keep(block, 1, in);
1791 * Transform a Firm graph into a SPARC graph.
1793 void sparc_transform_graph(sparc_code_gen_t *cg)
1795 ir_graph *irg = cg->irg;
1796 ir_entity *entity = get_irg_entity(irg);
1797 ir_type *frame_type;
1799 sparc_register_transformers();
1802 node_to_stack = pmap_create();
1809 abihelper = be_abihelper_prepare(irg);
1810 be_collect_stacknodes(abihelper);
1811 cconv = sparc_decide_calling_convention(get_entity_type(entity), false);
1812 create_stacklayout(irg);
1814 be_transform_graph(cg->irg, NULL);
1817 be_abihelper_finish(abihelper);
1818 sparc_free_calling_convention(cconv);
1820 frame_type = get_irg_frame_type(irg);
1821 if (get_type_state(frame_type) == layout_undefined)
1822 default_layout_compound_type(frame_type);
1824 pmap_destroy(node_to_stack);
1825 node_to_stack = NULL;
1827 be_add_missing_keeps(irg);
1830 void sparc_init_transform(void)
1832 FIRM_DBG_REGISTER(dbg, "firm.be.sparc.transform");