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);
206 * checks if a node's value can be encoded as a immediate
209 static bool is_imm_encodeable(const ir_node *node)
216 val = get_tarval_long(get_Const_tarval(node));
218 return -4096 <= val && val <= 4095;
222 * helper function for binop operations
224 * @param new_reg register generation function ptr
225 * @param new_imm immediate generation function ptr
227 static ir_node *gen_helper_binop(ir_node *node, match_flags_t flags,
228 new_binop_reg_func new_reg, new_binop_imm_func new_imm)
230 ir_node *block = be_transform_node(get_nodes_block(node));
231 ir_node *op1 = get_binop_left(node);
233 ir_node *op2 = get_binop_right(node);
235 dbg_info *dbgi = get_irn_dbg_info(node);
237 if (is_imm_encodeable(op2)) {
238 ir_node *new_op1 = be_transform_node(op1);
239 return new_imm(dbgi, block, new_op1, get_tarval_long(get_Const_tarval(op2)));
242 new_op2 = be_transform_node(op2);
244 if ((flags & MATCH_COMMUTATIVE) && is_imm_encodeable(op1)) {
245 return new_imm(dbgi, block, new_op2, get_tarval_long(get_Const_tarval(op1)) );
248 new_op1 = be_transform_node(op1);
250 return new_reg(dbgi, block, new_op1, new_op2);
254 * helper function for FP binop operations
256 static ir_node *gen_helper_binfpop(ir_node *node, ir_mode *mode,
257 new_binop_fp_func new_func_single,
258 new_binop_fp_func new_func_double,
259 new_binop_fp_func new_func_quad)
261 ir_node *block = be_transform_node(get_nodes_block(node));
262 ir_node *op1 = get_binop_left(node);
263 ir_node *new_op1 = be_transform_node(op1);
264 ir_node *op2 = get_binop_right(node);
265 ir_node *new_op2 = be_transform_node(op2);
266 dbg_info *dbgi = get_irn_dbg_info(node);
267 unsigned bits = get_mode_size_bits(mode);
271 return new_func_single(dbgi, block, new_op1, new_op2, mode);
273 return new_func_double(dbgi, block, new_op1, new_op2, mode);
275 return new_func_quad(dbgi, block, new_op1, new_op2, mode);
279 panic("unsupported mode %+F for float op", mode);
283 * Creates an sparc Add.
285 * @param node FIRM node
286 * @return the created sparc Add node
288 static ir_node *gen_Add(ir_node *node)
290 ir_mode *mode = get_irn_mode(node);
292 if (mode_is_float(mode)) {
293 return gen_helper_binfpop(node, mode, new_bd_sparc_fadd_s,
294 new_bd_sparc_fadd_d, new_bd_sparc_fadd_q);
297 return gen_helper_binop(node, MATCH_COMMUTATIVE, new_bd_sparc_Add_reg, new_bd_sparc_Add_imm);
301 * Creates an sparc Sub.
303 * @param node FIRM node
304 * @return the created sparc Sub node
306 static ir_node *gen_Sub(ir_node *node)
308 ir_mode *mode = get_irn_mode(node);
310 if (mode_is_float(mode)) {
311 return gen_helper_binfpop(node, mode, new_bd_sparc_fsub_s,
312 new_bd_sparc_fsub_d, new_bd_sparc_fsub_q);
315 return gen_helper_binop(node, MATCH_NONE, new_bd_sparc_Sub_reg, new_bd_sparc_Sub_imm);
321 * @param node the ir Load node
322 * @return the created sparc Load node
324 static ir_node *gen_Load(ir_node *node)
326 ir_mode *mode = get_Load_mode(node);
327 ir_node *block = be_transform_node(get_nodes_block(node));
328 ir_node *ptr = get_Load_ptr(node);
329 ir_node *new_ptr = be_transform_node(ptr);
330 ir_node *mem = get_Load_mem(node);
331 ir_node *new_mem = be_transform_node(mem);
332 dbg_info *dbgi = get_irn_dbg_info(node);
333 ir_node *new_load = NULL;
335 if (mode_is_float(mode)) {
336 new_load = new_bd_sparc_Ldf(dbgi, block, new_ptr, new_mem, mode, NULL, 0, 0, false);
338 new_load = new_bd_sparc_Ld(dbgi, block, new_ptr, new_mem, mode, NULL, 0, 0, false);
340 set_irn_pinned(new_load, get_irn_pinned(node));
346 * Transforms a Store.
348 * @param node the ir Store node
349 * @return the created sparc Store node
351 static ir_node *gen_Store(ir_node *node)
353 ir_node *block = be_transform_node(get_nodes_block(node));
354 ir_node *ptr = get_Store_ptr(node);
355 ir_node *new_ptr = be_transform_node(ptr);
356 ir_node *mem = get_Store_mem(node);
357 ir_node *new_mem = be_transform_node(mem);
358 ir_node *val = get_Store_value(node);
359 ir_node *new_val = be_transform_node(val);
360 ir_mode *mode = get_irn_mode(val);
361 dbg_info *dbgi = get_irn_dbg_info(node);
362 ir_node *new_store = NULL;
364 if (mode_is_float(mode)) {
365 new_store = new_bd_sparc_Stf(dbgi, block, new_ptr, new_val, new_mem, mode, NULL, 0, 0, false);
367 new_store = new_bd_sparc_St(dbgi, block, new_ptr, new_val, new_mem, mode, NULL, 0, 0, false);
369 set_irn_pinned(new_store, get_irn_pinned(node));
375 * Creates an sparc Mul.
376 * returns the lower 32bits of the 64bit multiply result
378 * @return the created sparc Mul node
380 static ir_node *gen_Mul(ir_node *node)
382 ir_mode *mode = get_irn_mode(node);
383 if (mode_is_float(mode)) {
384 return gen_helper_binfpop(node, mode, new_bd_sparc_fmul_s,
385 new_bd_sparc_fmul_d, new_bd_sparc_fmul_q);
388 assert(mode_is_data(mode));
389 return gen_helper_binop(node, MATCH_COMMUTATIVE,
390 new_bd_sparc_Mul_reg, new_bd_sparc_Mul_imm);
394 * Creates an sparc Mulh.
395 * Mulh returns the upper 32bits of a mul instruction
397 * @return the created sparc Mulh node
399 static ir_node *gen_Mulh(ir_node *node)
401 ir_mode *mode = get_irn_mode(node);
403 ir_node *proj_res_hi;
405 if (mode_is_float(mode))
406 panic("FP not supported yet");
409 assert(mode_is_data(mode));
410 mul = gen_helper_binop(node, MATCH_COMMUTATIVE, new_bd_sparc_Mulh_reg, new_bd_sparc_Mulh_imm);
411 //arch_irn_add_flags(mul, arch_irn_flags_modify_flags);
412 proj_res_hi = new_r_Proj(mul, mode_gp, pn_sparc_Mulh_low);
417 * Creates an sparc Div.
419 * @return the created sparc Div node
421 static ir_node *gen_Div(ir_node *node)
423 ir_mode *mode = get_Div_resmode(node);
426 assert(!mode_is_float(mode));
427 if (mode_is_signed(mode)) {
428 res = gen_helper_binop(node, 0, new_bd_sparc_SDiv_reg,
429 new_bd_sparc_SDiv_imm);
431 res = gen_helper_binop(node, 0, new_bd_sparc_UDiv_reg,
432 new_bd_sparc_UDiv_imm);
437 static ir_node *gen_Quot(ir_node *node)
439 ir_mode *mode = get_Quot_resmode(node);
440 assert(mode_is_float(mode));
441 return gen_helper_binfpop(node, mode, new_bd_sparc_fdiv_s,
442 new_bd_sparc_fdiv_d, new_bd_sparc_fdiv_q);
445 static ir_node *gen_Abs(ir_node *node)
447 ir_mode *const mode = get_irn_mode(node);
449 if (mode_is_float(mode)) {
450 return gen_helper_binfpop(node, mode, new_bd_sparc_fabs_s,
451 new_bd_sparc_fdiv_d, new_bd_sparc_fdiv_q);
453 ir_node *const block = be_transform_node(get_nodes_block(node));
454 dbg_info *const dbgi = get_irn_dbg_info(node);
455 ir_node *const op = get_Abs_op(node);
456 ir_node *const new_op = be_transform_node(op);
457 ir_node *const sra = new_bd_sparc_Sra_imm(dbgi, block, new_op, 31);
458 ir_node *const xor = new_bd_sparc_Xor_reg(dbgi, block, new_op, sra);
459 ir_node *const sub = new_bd_sparc_Sub_reg(dbgi, block, xor, sra);
465 * Transforms a Not node.
467 * @return the created sparc Not node
469 static ir_node *gen_Not(ir_node *node)
471 ir_node *block = be_transform_node(get_nodes_block(node));
472 ir_node *op = get_Not_op(node);
473 ir_node *new_op = be_transform_node(op);
474 dbg_info *dbgi = get_irn_dbg_info(node);
476 return new_bd_sparc_Not(dbgi, block, new_op);
479 static ir_node *gen_And(ir_node *node)
481 return gen_helper_binop(node, MATCH_COMMUTATIVE, new_bd_sparc_And_reg, new_bd_sparc_And_imm);
484 static ir_node *gen_Or(ir_node *node)
486 return gen_helper_binop(node, MATCH_COMMUTATIVE, new_bd_sparc_Or_reg, new_bd_sparc_Or_imm);
489 static ir_node *gen_Eor(ir_node *node)
491 return gen_helper_binop(node, MATCH_COMMUTATIVE, new_bd_sparc_Xor_reg, new_bd_sparc_Xor_imm);
494 static ir_node *gen_Shl(ir_node *node)
496 return gen_helper_binop(node, MATCH_NONE, new_bd_sparc_Sll_reg, new_bd_sparc_Sll_imm);
499 static ir_node *gen_Shr(ir_node *node)
501 return gen_helper_binop(node, MATCH_NONE, new_bd_sparc_Slr_reg, new_bd_sparc_Slr_imm);
504 static ir_node *gen_Shrs(ir_node *node)
506 return gen_helper_binop(node, MATCH_NONE, new_bd_sparc_Sra_reg, new_bd_sparc_Sra_imm);
510 * Transforms a Minus node.
512 static ir_node *gen_Minus(ir_node *node)
514 ir_node *block = be_transform_node(get_nodes_block(node));
515 ir_node *op = get_Minus_op(node);
516 ir_node *new_op = be_transform_node(op);
517 dbg_info *dbgi = get_irn_dbg_info(node);
518 ir_mode *mode = get_irn_mode(node);
520 if (mode_is_float(mode)) {
521 return new_bd_sparc_fneg(dbgi, block, new_op, mode);
524 return new_bd_sparc_Minus(dbgi, block, new_op);
527 static ir_node *make_addr(dbg_info *dbgi, ir_entity *entity)
529 ir_node *block = get_irg_start_block(current_ir_graph);
530 ir_node *node = new_bd_sparc_SymConst(dbgi, block, entity);
531 be_dep_on_frame(node);
536 * Create an entity for a given (floating point) tarval
538 static ir_entity *create_float_const_entity(tarval *tv)
540 ir_entity *entity = (ir_entity*) pmap_get(env_cg->constants, tv);
541 ir_initializer_t *initializer;
549 mode = get_tarval_mode(tv);
550 type = get_type_for_mode(mode);
551 glob = get_glob_type();
552 entity = new_entity(glob, id_unique("C%u"), type);
553 set_entity_visibility(entity, ir_visibility_private);
554 add_entity_linkage(entity, IR_LINKAGE_CONSTANT);
556 initializer = create_initializer_tarval(tv);
557 set_entity_initializer(entity, initializer);
559 pmap_insert(env_cg->constants, tv, entity);
564 * Transforms a Const node.
566 * @param node the ir Const node
567 * @return The transformed sparc node.
569 static ir_node *gen_Const(ir_node *node)
571 ir_node *block = be_transform_node(get_nodes_block(node));
572 ir_mode *mode = get_irn_mode(node);
574 if (mode_is_float(mode)) {
575 dbg_info *dbgi = get_irn_dbg_info(node);
576 tarval *tv = get_Const_tarval(node);
577 ir_entity *entity = create_float_const_entity(tv);
578 ir_node *addr = make_addr(dbgi, entity);
579 ir_node *mem = new_NoMem();
581 = new_bd_sparc_Ldf(dbgi, block, addr, mem, mode, NULL, 0, 0, false);
583 ir_node *proj = new_Proj(new_op, mode, pn_sparc_Ldf_res);
587 return create_const_graph(node, block);
592 * @param node the ir AddSP node
593 * @return transformed sparc SAVE node
595 static ir_node *gen_be_AddSP(ir_node *node)
597 ir_node *block = be_transform_node(get_nodes_block(node));
598 ir_node *sz = get_irn_n(node, be_pos_AddSP_size);
599 ir_node *new_sz = be_transform_node(sz);
600 ir_node *sp = get_irn_n(node, be_pos_AddSP_old_sp);
601 ir_node *new_sp = be_transform_node(sp);
602 dbg_info *dbgi = get_irn_dbg_info(node);
603 ir_node *nomem = new_NoMem();
606 /* SPARC stack grows in reverse direction */
607 new_op = new_bd_sparc_SubSP(dbgi, block, new_sp, new_sz, nomem);
614 * @param node the ir SubSP node
615 * @return transformed sparc SAVE node
617 static ir_node *gen_be_SubSP(ir_node *node)
619 ir_node *block = be_transform_node(get_nodes_block(node));
620 ir_node *sz = get_irn_n(node, be_pos_SubSP_size);
621 ir_node *new_sz = be_transform_node(sz);
622 ir_node *sp = get_irn_n(node, be_pos_SubSP_old_sp);
623 ir_node *new_sp = be_transform_node(sp);
624 dbg_info *dbgi = get_irn_dbg_info(node);
625 ir_node *nomem = new_NoMem();
628 /* SPARC stack grows in reverse direction */
629 new_op = new_bd_sparc_AddSP(dbgi, block, new_sp, new_sz, nomem);
634 * transform FrameAddr
636 static ir_node *gen_be_FrameAddr(ir_node *node)
638 ir_node *block = be_transform_node(get_nodes_block(node));
639 ir_entity *ent = be_get_frame_entity(node);
640 ir_node *fp = be_get_FrameAddr_frame(node);
641 ir_node *new_fp = be_transform_node(fp);
642 dbg_info *dbgi = get_irn_dbg_info(node);
644 new_node = new_bd_sparc_FrameAddr(dbgi, block, new_fp, ent);
649 * Transform a be_Copy.
651 static ir_node *gen_be_Copy(ir_node *node)
653 ir_node *result = be_duplicate_node(node);
654 ir_mode *mode = get_irn_mode(result);
656 if (mode_needs_gp_reg(mode)) {
657 set_irn_mode(node, mode_gp);
666 static ir_node *gen_be_Call(ir_node *node)
668 ir_node *res = be_duplicate_node(node);
669 arch_irn_add_flags(res, arch_irn_flags_modify_flags);
674 * Transforms a Switch.
677 static ir_node *gen_SwitchJmp(ir_node *node)
679 ir_node *block = be_transform_node(get_nodes_block(node));
680 ir_node *selector = get_Cond_selector(node);
681 dbg_info *dbgi = get_irn_dbg_info(node);
682 ir_node *new_op = be_transform_node(selector);
683 ir_node *const_graph;
687 const ir_edge_t *edge;
694 foreach_out_edge(node, edge) {
695 proj = get_edge_src_irn(edge);
696 assert(is_Proj(proj) && "Only proj allowed at SwitchJmp");
698 pn = get_Proj_proj(proj);
700 min = pn<min ? pn : min;
701 max = pn>max ? pn : max;
705 n_projs = max - translation + 1;
707 foreach_out_edge(node, edge) {
708 proj = get_edge_src_irn(edge);
709 assert(is_Proj(proj) && "Only proj allowed at SwitchJmp");
711 pn = get_Proj_proj(proj) - translation;
712 set_Proj_proj(proj, pn);
715 const_graph = create_const_graph_value(dbgi, block, translation);
716 sub = new_bd_sparc_Sub_reg(dbgi, block, new_op, const_graph);
717 return new_bd_sparc_SwitchJmp(dbgi, block, sub, n_projs, get_Cond_default_proj(node) - translation);
720 static ir_mode *get_cmp_mode(ir_node *b_value)
725 if (!is_Proj(b_value))
726 panic("can't determine cond signednes");
727 pred = get_Proj_pred(b_value);
729 panic("can't determine cond signednes (no cmp)");
730 op = get_Cmp_left(pred);
731 return get_irn_mode(op);
735 * Transform Cond nodes
737 static ir_node *gen_Cond(ir_node *node)
739 ir_node *selector = get_Cond_selector(node);
740 ir_mode *mode = get_irn_mode(selector);
749 if (mode != mode_b) {
750 return gen_SwitchJmp(node);
753 // regular if/else jumps
754 assert(is_Proj(selector));
755 assert(is_Cmp(get_Proj_pred(selector)));
757 cmp_mode = get_cmp_mode(selector);
759 block = be_transform_node(get_nodes_block(node));
760 dbgi = get_irn_dbg_info(node);
761 flag_node = be_transform_node(get_Proj_pred(selector));
762 pnc = get_Proj_proj(selector);
763 is_unsigned = !mode_is_signed(cmp_mode);
764 if (mode_is_float(cmp_mode)) {
765 assert(!is_unsigned);
766 return new_bd_sparc_fbfcc(dbgi, block, flag_node, pnc);
768 return new_bd_sparc_Bicc(dbgi, block, flag_node, pnc, is_unsigned);
775 static ir_node *gen_Cmp(ir_node *node)
777 ir_node *block = be_transform_node(get_nodes_block(node));
778 ir_node *op1 = get_Cmp_left(node);
779 ir_node *op2 = get_Cmp_right(node);
780 ir_mode *cmp_mode = get_irn_mode(op1);
781 dbg_info *dbgi = get_irn_dbg_info(node);
782 ir_node *new_op1 = be_transform_node(op1);
783 ir_node *new_op2 = be_transform_node(op2);
784 assert(get_irn_mode(op2) == cmp_mode);
786 if (mode_is_float(cmp_mode)) {
787 return new_bd_sparc_fcmp(dbgi, block, new_op1, new_op2, cmp_mode);
790 /* integer compare */
791 new_op1 = gen_extension(dbgi, block, new_op1, cmp_mode);
792 new_op2 = gen_extension(dbgi, block, new_op2, cmp_mode);
793 return new_bd_sparc_Cmp_reg(dbgi, block, new_op1, new_op2);
797 * Transforms a SymConst node.
799 static ir_node *gen_SymConst(ir_node *node)
801 ir_entity *entity = get_SymConst_entity(node);
802 dbg_info *dbgi = get_irn_dbg_info(node);
804 return make_addr(dbgi, entity);
808 * Transforms a Conv node.
811 static ir_node *gen_Conv(ir_node *node)
813 ir_node *block = be_transform_node(get_nodes_block(node));
814 ir_node *op = get_Conv_op(node);
815 ir_node *new_op = be_transform_node(op);
816 ir_mode *src_mode = get_irn_mode(op);
817 ir_mode *dst_mode = get_irn_mode(node);
818 dbg_info *dbg = get_irn_dbg_info(node);
820 int src_bits = get_mode_size_bits(src_mode);
821 int dst_bits = get_mode_size_bits(dst_mode);
823 if (src_mode == dst_mode)
826 if (mode_is_float(src_mode) || mode_is_float(dst_mode)) {
827 assert((src_bits <= 64 && dst_bits <= 64) && "quad FP not implemented");
829 if (mode_is_float(src_mode)) {
830 if (mode_is_float(dst_mode)) {
831 /* float -> float conv */
832 return new_bd_sparc_fftof(dbg, block, new_op, src_mode, dst_mode);
834 /* float -> int conv */
835 if (!mode_is_signed(dst_mode))
836 panic("float to unsigned not implemented yet");
837 return new_bd_sparc_fftoi(dbg, block, new_op, src_mode);
840 /* int -> float conv */
841 if (!mode_is_signed(src_mode))
842 panic("unsigned to float not implemented yet");
843 return new_bd_sparc_fitof(dbg, block, new_op, dst_mode);
845 } else { /* complete in gp registers */
849 if (src_bits == dst_bits) {
850 /* kill unnecessary conv */
854 if (src_bits < dst_bits) {
862 if (upper_bits_clean(new_op, min_mode)) {
866 if (mode_is_signed(min_mode)) {
867 return gen_sign_extension(dbg, block, new_op, min_bits);
869 return gen_zero_extension(dbg, block, new_op, min_bits);
874 static ir_node *gen_Unknown(ir_node *node)
876 ir_node *block = get_nodes_block(node);
877 ir_node *new_block = be_transform_node(block);
878 dbg_info *dbgi = get_irn_dbg_info(node);
880 /* just produce a 0 */
881 ir_mode *mode = get_irn_mode(node);
882 if (mode_is_float(mode)) {
883 panic("FP not implemented");
884 be_dep_on_frame(node);
886 } else if (mode_needs_gp_reg(mode)) {
887 return create_const_graph_value(dbgi, new_block, 0);
890 panic("Unexpected Unknown mode");
894 * Produces the type which sits between the stack args and the locals on the
897 static ir_type *sparc_get_between_type(void)
899 static ir_type *between_type = NULL;
901 if (between_type == NULL) {
902 between_type = new_type_class(new_id_from_str("sparc_between_type"));
903 set_type_size_bytes(between_type, SPARC_MIN_STACKSIZE);
909 static void create_stacklayout(ir_graph *irg)
911 ir_entity *entity = get_irg_entity(irg);
912 ir_type *function_type = get_entity_type(entity);
913 be_stack_layout_t *layout = be_get_irg_stack_layout(irg);
918 /* calling conventions must be decided by now */
919 assert(cconv != NULL);
921 /* construct argument type */
922 arg_type = new_type_struct(id_mangle_u(get_entity_ident(entity), new_id_from_chars("arg_type", 8)));
923 n_params = get_method_n_params(function_type);
924 for (p = 0; p < n_params; ++p) {
925 reg_or_stackslot_t *param = &cconv->parameters[p];
929 if (param->type == NULL)
932 snprintf(buf, sizeof(buf), "param_%d", p);
933 id = new_id_from_str(buf);
934 param->entity = new_entity(arg_type, id, param->type);
935 set_entity_offset(param->entity, param->offset);
938 memset(layout, 0, sizeof(*layout));
940 layout->frame_type = get_irg_frame_type(irg);
941 layout->between_type = sparc_get_between_type();
942 layout->arg_type = arg_type;
943 layout->initial_offset = 0;
944 layout->initial_bias = 0;
945 layout->stack_dir = -1;
946 layout->sp_relative = false;
948 assert(N_FRAME_TYPES == 3);
949 layout->order[0] = layout->frame_type;
950 layout->order[1] = layout->between_type;
951 layout->order[2] = layout->arg_type;
955 * transform the start node to the prolog code + initial barrier
957 static ir_node *gen_Start(ir_node *node)
959 ir_graph *irg = get_irn_irg(node);
960 ir_entity *entity = get_irg_entity(irg);
961 ir_type *function_type = get_entity_type(entity);
962 ir_node *block = get_nodes_block(node);
963 ir_node *new_block = be_transform_node(block);
964 dbg_info *dbgi = get_irn_dbg_info(node);
973 /* stackpointer is important at function prolog */
974 be_prolog_add_reg(abihelper, sp_reg,
975 arch_register_req_type_produces_sp | arch_register_req_type_ignore);
976 /* function parameters in registers */
977 for (i = 0; i < get_method_n_params(function_type); ++i) {
978 const reg_or_stackslot_t *param = &cconv->parameters[i];
979 if (param->reg0 != NULL)
980 be_prolog_add_reg(abihelper, param->reg0, 0);
981 if (param->reg1 != NULL)
982 be_prolog_add_reg(abihelper, param->reg1, 0);
985 start = be_prolog_create_start(abihelper, dbgi, new_block);
987 mem = be_prolog_get_memory(abihelper);
988 sp = be_prolog_get_reg_value(abihelper, sp_reg);
989 save = new_bd_sparc_Save(NULL, block, sp, mem, SPARC_MIN_STACKSIZE);
990 fp = new_r_Proj(save, mode_gp, pn_sparc_Save_frame);
991 sp = new_r_Proj(save, mode_gp, pn_sparc_Save_stack);
992 mem = new_r_Proj(save, mode_M, pn_sparc_Save_mem);
993 arch_set_irn_register(fp, fp_reg);
994 arch_set_irn_register(sp, sp_reg);
996 be_prolog_add_reg(abihelper, fp_reg, arch_register_req_type_ignore);
997 be_prolog_set_reg_value(abihelper, fp_reg, fp);
999 sp = be_new_IncSP(sp_reg, new_block, sp, BE_STACK_FRAME_SIZE_EXPAND, 0);
1000 be_prolog_set_reg_value(abihelper, sp_reg, sp);
1001 be_prolog_set_memory(abihelper, mem);
1003 barrier = be_prolog_create_barrier(abihelper, new_block);
1008 static ir_node *get_stack_pointer_for(ir_node *node)
1010 /* get predecessor in stack_order list */
1011 ir_node *stack_pred = be_get_stack_pred(abihelper, node);
1012 ir_node *stack_pred_transformed;
1015 if (stack_pred == NULL) {
1016 /* first stack user in the current block. We can simply use the
1017 * initial sp_proj for it */
1018 ir_node *sp_proj = be_prolog_get_reg_value(abihelper, sp_reg);
1022 stack_pred_transformed = be_transform_node(stack_pred);
1023 stack = pmap_get(node_to_stack, stack_pred);
1024 if (stack == NULL) {
1025 return get_stack_pointer_for(stack_pred);
1032 * transform a Return node into epilogue code + return statement
1034 static ir_node *gen_Return(ir_node *node)
1036 ir_node *block = get_nodes_block(node);
1037 ir_node *new_block = be_transform_node(block);
1038 dbg_info *dbgi = get_irn_dbg_info(node);
1039 ir_node *mem = get_Return_mem(node);
1040 ir_node *new_mem = be_transform_node(mem);
1041 ir_node *sp_proj = get_stack_pointer_for(node);
1042 int n_res = get_Return_n_ress(node);
1047 be_epilog_begin(abihelper);
1048 be_epilog_set_memory(abihelper, new_mem);
1049 /* connect stack pointer with initial stack pointer. fix_stack phase
1050 will later serialize all stack pointer adjusting nodes */
1051 be_epilog_add_reg(abihelper, sp_reg,
1052 arch_register_req_type_produces_sp | arch_register_req_type_ignore,
1056 for (i = 0; i < n_res; ++i) {
1057 ir_node *res_value = get_Return_res(node, i);
1058 ir_node *new_res_value = be_transform_node(res_value);
1059 const reg_or_stackslot_t *slot = &cconv->results[i];
1060 const arch_register_t *reg = slot->reg0;
1061 assert(slot->reg1 == NULL);
1062 be_epilog_add_reg(abihelper, reg, 0, new_res_value);
1065 /* create the barrier before the epilog code */
1066 be_epilog_create_barrier(abihelper, new_block);
1068 /* epilog code: an incsp */
1069 sp_proj = be_epilog_get_reg_value(abihelper, sp_reg);
1070 incsp = be_new_IncSP(sp_reg, new_block, sp_proj,
1071 BE_STACK_FRAME_SIZE_SHRINK, 0);
1072 be_epilog_set_reg_value(abihelper, sp_reg, incsp);
1074 bereturn = be_epilog_create_return(abihelper, dbgi, new_block);
1079 static ir_node *bitcast_int_to_float(dbg_info *dbgi, ir_node *block,
1080 ir_node *value0, ir_node *value1)
1082 ir_graph *irg = current_ir_graph;
1083 ir_node *sp = get_irg_frame(irg);
1084 ir_node *nomem = new_NoMem();
1085 ir_node *st = new_bd_sparc_St(dbgi, block, sp, value0, nomem, mode_gp,
1090 set_irn_pinned(st, op_pin_state_floats);
1092 if (value1 != NULL) {
1093 ir_node *st1 = new_bd_sparc_St(dbgi, block, sp, value1, nomem, mode_gp,
1095 ir_node *in[2] = { st, st1 };
1096 ir_node *sync = new_r_Sync(block, 2, in);
1097 set_irn_pinned(st1, op_pin_state_floats);
1105 ldf = new_bd_sparc_Ldf(dbgi, block, sp, mem, mode, NULL, 0, 0, true);
1106 set_irn_pinned(ldf, op_pin_state_floats);
1108 return new_Proj(ldf, mode, pn_sparc_Ldf_res);
1111 static void bitcast_float_to_int(dbg_info *dbgi, ir_node *block,
1112 ir_node *node, ir_mode *float_mode,
1115 ir_graph *irg = current_ir_graph;
1116 ir_node *stack = get_irg_frame(irg);
1117 ir_node *nomem = new_NoMem();
1118 ir_node *stf = new_bd_sparc_Stf(dbgi, block, stack, node, nomem,
1119 float_mode, NULL, 0, 0, true);
1120 int bits = get_mode_size_bits(float_mode);
1122 set_irn_pinned(stf, op_pin_state_floats);
1124 ld = new_bd_sparc_Ld(dbgi, block, stack, stf, mode_gp, NULL, 0, 0, true);
1125 set_irn_pinned(ld, op_pin_state_floats);
1126 result[0] = new_Proj(ld, mode_gp, pn_sparc_Ld_res);
1129 ir_node *ld2 = new_bd_sparc_Ld(dbgi, block, stack, stf, mode_gp,
1131 set_irn_pinned(ld, op_pin_state_floats);
1132 result[1] = new_Proj(ld2, mode_gp, pn_sparc_Ld_res);
1134 arch_irn_add_flags(ld, sparc_arch_irn_flag_needs_64bit_spillslot);
1135 arch_irn_add_flags(ld2, sparc_arch_irn_flag_needs_64bit_spillslot);
1142 static ir_node *gen_Call(ir_node *node)
1144 ir_graph *irg = get_irn_irg(node);
1145 ir_node *callee = get_Call_ptr(node);
1146 ir_node *block = get_nodes_block(node);
1147 ir_node *new_block = be_transform_node(block);
1148 ir_node *mem = get_Call_mem(node);
1149 ir_node *new_mem = be_transform_node(mem);
1150 dbg_info *dbgi = get_irn_dbg_info(node);
1151 ir_type *type = get_Call_type(node);
1152 int n_params = get_Call_n_params(node);
1153 int n_param_regs = sizeof(param_regs)/sizeof(param_regs[0]);
1154 /* max inputs: memory, callee, register arguments */
1155 int max_inputs = 2 + n_param_regs;
1156 ir_node **in = ALLOCAN(ir_node*, max_inputs);
1157 ir_node **sync_ins = ALLOCAN(ir_node*, max_inputs);
1158 struct obstack *obst = be_get_be_obst(irg);
1159 const arch_register_req_t **in_req
1160 = OALLOCNZ(obst, const arch_register_req_t*, max_inputs);
1161 calling_convention_t *cconv
1162 = sparc_decide_calling_convention(type, true);
1166 = sizeof(caller_saves)/sizeof(caller_saves[0]);
1167 ir_entity *entity = NULL;
1168 ir_node *new_frame = get_stack_pointer_for(node);
1177 assert(n_params == get_method_n_params(type));
1179 /* construct arguments */
1182 in_req[in_arity] = arch_no_register_req;
1186 /* stack pointer input */
1187 /* construct an IncSP -> we have to always be sure that the stack is
1188 * aligned even if we don't push arguments on it */
1189 incsp = be_new_IncSP(sp_reg, new_block, new_frame,
1190 cconv->param_stack_size, 1);
1191 in_req[in_arity] = sp_reg->single_req;
1192 in[in_arity] = incsp;
1196 for (p = 0; p < n_params; ++p) {
1197 ir_node *value = get_Call_param(node, p);
1198 ir_node *new_value = be_transform_node(value);
1199 const reg_or_stackslot_t *param = &cconv->parameters[p];
1200 ir_type *param_type = get_method_param_type(type, p);
1201 ir_mode *mode = get_type_mode(param_type);
1202 ir_node *new_values[2];
1205 if (mode_is_float(mode) && param->reg0 != NULL) {
1206 unsigned size_bits = get_mode_size_bits(mode);
1207 assert(size_bits <= 64);
1208 bitcast_float_to_int(dbgi, new_block, new_value, mode, new_values);
1210 new_values[0] = new_value;
1211 new_values[1] = NULL;
1214 /* put value into registers */
1215 if (param->reg0 != NULL) {
1216 in[in_arity] = new_values[0];
1217 in_req[in_arity] = param->reg0->single_req;
1219 if (new_values[1] == NULL)
1222 if (param->reg1 != NULL) {
1223 assert(new_values[1] != NULL);
1224 in[in_arity] = new_values[1];
1225 in_req[in_arity] = param->reg1->single_req;
1230 /* we need a store if we're here */
1231 if (new_values[1] != NULL) {
1232 new_value = new_values[1];
1236 /* create a parameter frame if necessary */
1237 if (mode_is_float(mode)) {
1238 str = new_bd_sparc_Stf(dbgi, new_block, incsp, new_value, new_mem,
1239 mode, NULL, 0, param->offset, true);
1241 str = new_bd_sparc_St(dbgi, new_block, incsp, new_value, new_mem,
1242 mode, NULL, 0, param->offset, true);
1244 sync_ins[sync_arity++] = str;
1246 assert(in_arity <= max_inputs);
1248 /* construct memory input */
1249 if (sync_arity == 0) {
1250 in[mem_pos] = new_mem;
1251 } else if (sync_arity == 1) {
1252 in[mem_pos] = sync_ins[0];
1254 in[mem_pos] = new_rd_Sync(NULL, new_block, sync_arity, sync_ins);
1257 if (is_SymConst(callee)) {
1258 entity = get_SymConst_entity(callee);
1260 in[in_arity] = be_transform_node(callee);
1261 in_req[in_arity] = sparc_reg_classes[CLASS_sparc_gp].class_req;
1269 out_arity = 1 + n_caller_saves;
1271 /* create call node */
1272 if (entity != NULL) {
1273 res = new_bd_sparc_Call_imm(dbgi, new_block, in_arity, in, out_arity,
1276 res = new_bd_sparc_Call_reg(dbgi, new_block, in_arity, in, out_arity);
1278 set_sparc_in_req_all(res, in_req);
1280 /* create output register reqs */
1282 arch_set_out_register_req(res, o++, arch_no_register_req);
1283 for (i = 0; i < n_caller_saves; ++i) {
1284 const arch_register_t *reg = caller_saves[i];
1285 arch_set_out_register_req(res, o++, reg->single_req);
1287 assert(o == out_arity);
1289 /* copy pinned attribute */
1290 set_irn_pinned(res, get_irn_pinned(node));
1292 /* IncSP to destroy the call stackframe */
1293 incsp = be_new_IncSP(sp_reg, new_block, incsp, -cconv->param_stack_size, 0);
1294 /* if we are the last IncSP producer in a block then we have to keep
1296 * Note: This here keeps all producers which is more than necessary */
1297 add_irn_dep(incsp, res);
1300 pmap_insert(node_to_stack, node, incsp);
1302 sparc_free_calling_convention(cconv);
1306 static ir_node *gen_Sel(ir_node *node)
1308 dbg_info *dbgi = get_irn_dbg_info(node);
1309 ir_node *block = get_nodes_block(node);
1310 ir_node *new_block = be_transform_node(block);
1311 ir_node *ptr = get_Sel_ptr(node);
1312 ir_node *new_ptr = be_transform_node(ptr);
1313 ir_entity *entity = get_Sel_entity(node);
1315 /* must be the frame pointer all other sels must have been lowered
1317 assert(is_Proj(ptr) && is_Start(get_Proj_pred(ptr)));
1318 /* we should not have value types from parameters anymore - they should be
1320 assert(get_entity_owner(entity) !=
1321 get_method_value_param_type(get_entity_type(get_irg_entity(get_irn_irg(node)))));
1323 return new_bd_sparc_FrameAddr(dbgi, new_block, new_ptr, entity);
1327 * Transform some Phi nodes
1329 static ir_node *gen_Phi(ir_node *node)
1331 const arch_register_req_t *req;
1332 ir_node *block = be_transform_node(get_nodes_block(node));
1333 ir_graph *irg = current_ir_graph;
1334 dbg_info *dbgi = get_irn_dbg_info(node);
1335 ir_mode *mode = get_irn_mode(node);
1338 if (mode_needs_gp_reg(mode)) {
1339 /* we shouldn't have any 64bit stuff around anymore */
1340 assert(get_mode_size_bits(mode) <= 32);
1341 /* all integer operations are on 32bit registers now */
1343 req = sparc_reg_classes[CLASS_sparc_gp].class_req;
1345 req = arch_no_register_req;
1348 /* phi nodes allow loops, so we use the old arguments for now
1349 * and fix this later */
1350 phi = new_ir_node(dbgi, irg, block, op_Phi, mode, get_irn_arity(node), get_irn_in(node) + 1);
1351 copy_node_attr(irg, node, phi);
1352 be_duplicate_deps(node, phi);
1353 arch_set_out_register_req(phi, 0, req);
1354 be_enqueue_preds(node);
1359 * Transform a Proj from a Load.
1361 static ir_node *gen_Proj_Load(ir_node *node)
1363 ir_node *load = get_Proj_pred(node);
1364 ir_node *new_load = be_transform_node(load);
1365 dbg_info *dbgi = get_irn_dbg_info(node);
1366 long pn = get_Proj_proj(node);
1368 /* renumber the proj */
1369 switch (get_sparc_irn_opcode(new_load)) {
1371 /* handle all gp loads equal: they have the same proj numbers. */
1372 if (pn == pn_Load_res) {
1373 return new_rd_Proj(dbgi, new_load, mode_gp, pn_sparc_Ld_res);
1374 } else if (pn == pn_Load_M) {
1375 return new_rd_Proj(dbgi, new_load, mode_M, pn_sparc_Ld_M);
1379 if (pn == pn_Load_res) {
1380 return new_rd_Proj(dbgi, new_load, mode_fp, pn_sparc_Ldf_res);
1381 } else if (pn == pn_Load_M) {
1382 return new_rd_Proj(dbgi, new_load, mode_M, pn_sparc_Ld_M);
1388 panic("Unsupported Proj from Load");
1391 static ir_node *gen_Proj_Store(ir_node *node)
1393 ir_node *store = get_Proj_pred(node);
1394 ir_node *new_store = be_transform_node(store);
1395 long pn = get_Proj_proj(node);
1397 /* renumber the proj */
1398 switch (get_sparc_irn_opcode(new_store)) {
1400 if (pn == pn_Store_M) {
1405 if (pn == pn_Store_M) {
1412 panic("Unsupported Proj from Store");
1416 * Transform the Projs from a Cmp.
1418 static ir_node *gen_Proj_Cmp(ir_node *node)
1421 panic("not implemented");
1425 * transform Projs from a Div
1427 static ir_node *gen_Proj_Div(ir_node *node)
1429 ir_node *pred = get_Proj_pred(node);
1430 ir_node *new_pred = be_transform_node(pred);
1431 long pn = get_Proj_proj(node);
1433 assert(is_sparc_SDiv(new_pred) || is_sparc_UDiv(new_pred));
1434 assert(pn_sparc_SDiv_res == pn_sparc_UDiv_res);
1435 assert(pn_sparc_SDiv_M == pn_sparc_UDiv_M);
1438 return new_r_Proj(new_pred, mode_gp, pn_sparc_SDiv_res);
1440 return new_r_Proj(new_pred, mode_gp, pn_sparc_SDiv_M);
1444 panic("Unsupported Proj from Div");
1447 static ir_node *gen_Proj_Quot(ir_node *node)
1449 ir_node *pred = get_Proj_pred(node);
1450 ir_node *new_pred = be_transform_node(pred);
1451 long pn = get_Proj_proj(node);
1453 assert(is_sparc_fdiv(new_pred));
1456 return new_r_Proj(new_pred, mode_gp, pn_sparc_fdiv_res);
1458 return new_r_Proj(new_pred, mode_gp, pn_sparc_fdiv_M);
1462 panic("Unsupported Proj from Quot");
1465 static ir_node *gen_Proj_Start(ir_node *node)
1467 ir_node *block = get_nodes_block(node);
1468 ir_node *new_block = be_transform_node(block);
1469 ir_node *barrier = be_transform_node(get_Proj_pred(node));
1470 long pn = get_Proj_proj(node);
1472 switch ((pn_Start) pn) {
1473 case pn_Start_X_initial_exec:
1474 /* exchange ProjX with a jump */
1475 return new_bd_sparc_Ba(NULL, new_block);
1477 return new_r_Proj(barrier, mode_M, 0);
1478 case pn_Start_T_args:
1480 case pn_Start_P_frame_base:
1481 return be_prolog_get_reg_value(abihelper, fp_reg);
1482 case pn_Start_P_tls:
1487 panic("Unexpected start proj: %ld\n", pn);
1490 static ir_node *gen_Proj_Proj_Start(ir_node *node)
1492 long pn = get_Proj_proj(node);
1493 ir_node *block = get_nodes_block(node);
1494 ir_node *new_block = be_transform_node(block);
1495 ir_entity *entity = get_irg_entity(current_ir_graph);
1496 ir_type *method_type = get_entity_type(entity);
1497 ir_type *param_type = get_method_param_type(method_type, pn);
1498 const reg_or_stackslot_t *param;
1500 /* Proj->Proj->Start must be a method argument */
1501 assert(get_Proj_proj(get_Proj_pred(node)) == pn_Start_T_args);
1503 param = &cconv->parameters[pn];
1505 if (param->reg0 != NULL) {
1506 /* argument transmitted in register */
1507 ir_mode *mode = get_type_mode(param_type);
1508 const arch_register_t *reg = param->reg0;
1509 ir_node *value = be_prolog_get_reg_value(abihelper, reg);
1511 if (mode_is_float(mode)) {
1512 ir_node *value1 = NULL;
1514 if (param->reg1 != NULL) {
1515 value1 = be_prolog_get_reg_value(abihelper, param->reg1);
1516 } else if (param->entity != NULL) {
1517 ir_node *fp = be_prolog_get_reg_value(abihelper, fp_reg);
1518 ir_node *mem = be_prolog_get_memory(abihelper);
1519 ir_node *ld = new_bd_sparc_Ld(NULL, new_block, fp, mem,
1520 mode_gp, param->entity,
1522 value1 = new_Proj(ld, mode_gp, pn_sparc_Ld_res);
1525 /* convert integer value to float */
1526 value = bitcast_int_to_float(NULL, new_block, value, value1);
1530 /* argument transmitted on stack */
1531 ir_node *fp = be_prolog_get_reg_value(abihelper, fp_reg);
1532 ir_node *mem = be_prolog_get_memory(abihelper);
1533 ir_mode *mode = get_type_mode(param->type);
1537 if (mode_is_float(mode)) {
1538 load = new_bd_sparc_Ldf(NULL, new_block, fp, mem, mode,
1539 param->entity, 0, 0, true);
1540 value = new_r_Proj(load, mode_fp, pn_sparc_Ldf_res);
1542 load = new_bd_sparc_Ld(NULL, new_block, fp, mem, mode,
1543 param->entity, 0, 0, true);
1544 value = new_r_Proj(load, mode_gp, pn_sparc_Ld_res);
1546 set_irn_pinned(load, op_pin_state_floats);
1552 static ir_node *gen_Proj_Call(ir_node *node)
1554 long pn = get_Proj_proj(node);
1555 ir_node *call = get_Proj_pred(node);
1556 ir_node *new_call = be_transform_node(call);
1558 switch ((pn_Call) pn) {
1560 return new_r_Proj(new_call, mode_M, 0);
1561 case pn_Call_X_regular:
1562 case pn_Call_X_except:
1563 case pn_Call_T_result:
1564 case pn_Call_P_value_res_base:
1568 panic("Unexpected Call proj %ld\n", pn);
1572 * Finds number of output value of a mode_T node which is constrained to
1573 * a single specific register.
1575 static int find_out_for_reg(ir_node *node, const arch_register_t *reg)
1577 int n_outs = arch_irn_get_n_outs(node);
1580 for (o = 0; o < n_outs; ++o) {
1581 const arch_register_req_t *req = arch_get_out_register_req(node, o);
1582 if (req == reg->single_req)
1588 static ir_node *gen_Proj_Proj_Call(ir_node *node)
1590 long pn = get_Proj_proj(node);
1591 ir_node *call = get_Proj_pred(get_Proj_pred(node));
1592 ir_node *new_call = be_transform_node(call);
1593 ir_type *function_type = get_Call_type(call);
1594 calling_convention_t *cconv
1595 = sparc_decide_calling_convention(function_type, true);
1596 const reg_or_stackslot_t *res = &cconv->results[pn];
1597 const arch_register_t *reg = res->reg0;
1601 assert(res->reg0 != NULL && res->reg1 == NULL);
1602 regn = find_out_for_reg(new_call, reg);
1604 panic("Internal error in calling convention for return %+F", node);
1606 mode = res->reg0->reg_class->mode;
1608 sparc_free_calling_convention(cconv);
1610 return new_r_Proj(new_call, mode, regn);
1614 * Transform a Proj node.
1616 static ir_node *gen_Proj(ir_node *node)
1618 ir_node *pred = get_Proj_pred(node);
1620 switch (get_irn_opcode(pred)) {
1622 return gen_Proj_Store(node);
1624 return gen_Proj_Load(node);
1626 return gen_Proj_Call(node);
1628 return gen_Proj_Cmp(node);
1630 return be_duplicate_node(node);
1632 return gen_Proj_Div(node);
1634 return gen_Proj_Quot(node);
1636 return gen_Proj_Start(node);
1638 ir_node *pred_pred = get_Proj_pred(pred);
1639 if (is_Call(pred_pred)) {
1640 return gen_Proj_Proj_Call(node);
1641 } else if (is_Start(pred_pred)) {
1642 return gen_Proj_Proj_Start(node);
1647 panic("code selection didn't expect Proj after %+F\n", pred);
1654 static ir_node *gen_Jmp(ir_node *node)
1656 ir_node *block = get_nodes_block(node);
1657 ir_node *new_block = be_transform_node(block);
1658 dbg_info *dbgi = get_irn_dbg_info(node);
1660 return new_bd_sparc_Ba(dbgi, new_block);
1664 * configure transformation callbacks
1666 void sparc_register_transformers(void)
1668 be_start_transform_setup();
1670 be_set_transform_function(op_Abs, gen_Abs);
1671 be_set_transform_function(op_Add, gen_Add);
1672 be_set_transform_function(op_And, gen_And);
1673 be_set_transform_function(op_be_AddSP, gen_be_AddSP);
1674 be_set_transform_function(op_be_Call, gen_be_Call);
1675 be_set_transform_function(op_be_Copy, gen_be_Copy);
1676 be_set_transform_function(op_be_FrameAddr, gen_be_FrameAddr);
1677 be_set_transform_function(op_be_SubSP, gen_be_SubSP);
1678 be_set_transform_function(op_Call, gen_Call);
1679 be_set_transform_function(op_Cmp, gen_Cmp);
1680 be_set_transform_function(op_Cond, gen_Cond);
1681 be_set_transform_function(op_Const, gen_Const);
1682 be_set_transform_function(op_Conv, gen_Conv);
1683 be_set_transform_function(op_Div, gen_Div);
1684 be_set_transform_function(op_Eor, gen_Eor);
1685 be_set_transform_function(op_Jmp, gen_Jmp);
1686 be_set_transform_function(op_Load, gen_Load);
1687 be_set_transform_function(op_Minus, gen_Minus);
1688 be_set_transform_function(op_Mul, gen_Mul);
1689 be_set_transform_function(op_Mulh, gen_Mulh);
1690 be_set_transform_function(op_Not, gen_Not);
1691 be_set_transform_function(op_Or, gen_Or);
1692 be_set_transform_function(op_Phi, gen_Phi);
1693 be_set_transform_function(op_Proj, gen_Proj);
1694 be_set_transform_function(op_Quot, gen_Quot);
1695 be_set_transform_function(op_Return, gen_Return);
1696 be_set_transform_function(op_Sel, gen_Sel);
1697 be_set_transform_function(op_Shl, gen_Shl);
1698 be_set_transform_function(op_Shr, gen_Shr);
1699 be_set_transform_function(op_Shrs, gen_Shrs);
1700 be_set_transform_function(op_Start, gen_Start);
1701 be_set_transform_function(op_Store, gen_Store);
1702 be_set_transform_function(op_Sub, gen_Sub);
1703 be_set_transform_function(op_SymConst, gen_SymConst);
1704 be_set_transform_function(op_Unknown, gen_Unknown);
1706 be_set_transform_function(op_sparc_Save, be_duplicate_node);
1709 /* hack to avoid unused fp proj at start barrier */
1710 static void assure_fp_keep(void)
1712 unsigned n_users = 0;
1713 const ir_edge_t *edge;
1714 ir_node *fp_proj = be_prolog_get_reg_value(abihelper, fp_reg);
1716 foreach_out_edge(fp_proj, edge) {
1717 ir_node *succ = get_edge_src_irn(edge);
1718 if (is_End(succ) || is_Anchor(succ))
1724 ir_node *block = get_nodes_block(fp_proj);
1725 ir_node *in[1] = { fp_proj };
1726 be_new_Keep(block, 1, in);
1731 * Transform a Firm graph into a SPARC graph.
1733 void sparc_transform_graph(sparc_code_gen_t *cg)
1735 ir_graph *irg = cg->irg;
1736 ir_entity *entity = get_irg_entity(irg);
1737 ir_type *frame_type;
1739 sparc_register_transformers();
1742 node_to_stack = pmap_create();
1749 abihelper = be_abihelper_prepare(irg);
1750 be_collect_stacknodes(abihelper);
1751 cconv = sparc_decide_calling_convention(get_entity_type(entity), false);
1752 create_stacklayout(irg);
1754 be_transform_graph(cg->irg, NULL);
1757 be_abihelper_finish(abihelper);
1758 sparc_free_calling_convention(cconv);
1760 frame_type = get_irg_frame_type(irg);
1761 if (get_type_state(frame_type) == layout_undefined)
1762 default_layout_compound_type(frame_type);
1764 pmap_destroy(node_to_stack);
1765 node_to_stack = NULL;
1767 be_add_missing_keeps(irg);
1770 void sparc_init_transform(void)
1772 FIRM_DBG_REGISTER(dbg, "firm.be.sparc.transform");