nsz Git - libfirm/blob - ir/be/mips/mips_new_nodes.c

   1 /*
   2  * Copyright (C) 1995-2007 University of Karlsruhe.  All right reserved.
   3  *
   4  * This file is part of libFirm.
   5  *
   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.
  10  *
  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.
  14  *
  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
  17  * PURPOSE.
  18  */
  19
  20 /**
  21  * @file
  22  * @brief    This file implements the creation of the achitecture specific firm
  23  *           opcodes and the coresponding node constructors for the mips
  24  *           assembler irg.
  25  * @author   Matthias Braun, Mehdi
  26  * @version  $Id$
  27  */
  28 #ifdef HAVE_CONFIG_H
  29 #include "config.h"
  30 #endif
  31
  32 #include <stdlib.h>
  33
  34 #include "irprog_t.h"
  35 #include "irgraph_t.h"
  36 #include "irnode_t.h"
  37 #include "irmode_t.h"
  38 #include "ircons_t.h"
  39 #include "iropt_t.h"
  40 #include "irop.h"
  41 #include "firm_common_t.h"
  42 #include "irvrfy_t.h"
  43 #include "irprintf.h"
  44 #include "xmalloc.h"
  45
  46 #include "../bearch_t.h"
  47
  48 #include "mips_nodes_attr.h"
  49 #include "mips_new_nodes.h"
  50 #include "gen_mips_regalloc_if.h"
  51
  52
  53
  54 /***********************************************************************************
  55  *      _                                   _       _             __
  56  *     | |                                 (_)     | |           / _|
  57  *   __| |_   _ _ __ ___  _ __   ___ _ __   _ _ __ | |_ ___ _ __| |_ __ _  ___ ___
  58  *  / _` | | | | '_ ` _ \| '_ \ / _ \ '__| | | '_ \| __/ _ \ '__|  _/ _` |/ __/ _ \
  59  * | (_| | |_| | | | | | | |_) |  __/ |    | | | | | ||  __/ |  | || (_| | (_|  __/
  60  *  \__,_|\__,_|_| |_| |_| .__/ \___|_|    |_|_| |_|\__\___|_|  |_| \__,_|\___\___|
  61  *                       | |
  62  *                       |_|
  63  ***********************************************************************************/
  64
  65 /**
  66  * Dumps the register requirements for either in or out.
  67  */
  68 static void dump_reg_req(FILE *F, ir_node *n, const arch_register_req_t **reqs, int inout) {
  69         char *dir = inout ? "out" : "in";
  70         int   max = inout ? get_mips_n_res(n) : get_irn_arity(n);
  71         char  buf[1024];
  72         int   i;
  73
  74         memset(buf, 0, sizeof(buf));
  75
  76         if (reqs) {
  77                 for (i = 0; i < max; i++) {
  78                         fprintf(F, "%sreq #%d =", dir, i);
  79
  80                         if (reqs[i]->type == arch_register_req_type_none) {
  81                                 fprintf(F, " n/a");
  82                         }
  83
  84                         if (reqs[i]->type & arch_register_req_type_normal) {
  85                                 fprintf(F, " %s", reqs[i]->cls->name);
  86                         }
  87
  88                         if (reqs[i]->type & arch_register_req_type_limited) {
  89                                 fprintf(F, " %s",
  90                                         arch_register_req_format(buf, sizeof(buf), reqs[i], n));
  91                         }
  92
  93                         if (reqs[i]->type & arch_register_req_type_should_be_same) {
  94                                 ir_fprintf(F, " same as %+F", get_irn_n(n, reqs[i]->other_same));
  95                         }
  96
  97                         if (reqs[i]->type & arch_register_req_type_should_be_different) {
  98                                 ir_fprintf(F, " different from %+F", get_irn_n(n, reqs[i]->other_different));
  99                         }
 100
 101                         fprintf(F, "\n");
 102                 }
 103
 104                 fprintf(F, "\n");
 105         } else {
 106                 fprintf(F, "%sreq = N/A\n", dir);
 107         }
 108 }
 109
 110
 111 /**
 112  * Dumper interface for dumping mips nodes in vcg.
 113  * @param n        the node to dump
 114  * @param F        the output file
 115  * @param reason   indicates which kind of information should be dumped
 116  * @return 0 on success or != 0 on failure
 117  */
 118 static int mips_dump_node(ir_node *n, FILE *F, dump_reason_t reason) {
 119         ir_mode     *mode = NULL;
 120         int          bad  = 0;
 121         int          i;
 122         mips_attr_t *attr;
 123         char buf[64];
 124         const arch_register_req_t **reqs;
 125         const arch_register_t     **slots;
 126
 127         switch (reason) {
 128                 case dump_node_opcode_txt:
 129                         fprintf(F, "%s", get_irn_opname(n));
 130                         break;
 131
 132                 case dump_node_mode_txt:
 133                         mode = get_irn_mode(n);
 134
 135                         if (mode) {
 136                                 fprintf(F, "[%s]", get_mode_name(mode));
 137                         }
 138                         else {
 139                                 fprintf(F, "[?NOMODE?]");
 140                         }
 141                         break;
 142
 143                 case dump_node_nodeattr_txt:
 144
 145                         /* TODO: dump some attributes which should show up */
 146                         /* in node name in dump (e.g. consts or the like)  */
 147
 148                         break;
 149
 150                 case dump_node_info_txt:
 151                         attr = get_mips_attr(n);
 152                         fprintf(F, "=== mips attr begin ===\n");
 153
 154                         /* dump IN requirements */
 155                         if (get_irn_arity(n) > 0) {
 156                                 reqs = get_mips_in_req_all(n);
 157                                 dump_reg_req(F, n, reqs, 0);
 158                         }
 159
 160                         /* dump OUT requirements */
 161                         if (ARR_LEN(attr->slots) > 0) {
 162                                 reqs = get_mips_out_req_all(n);
 163                                 dump_reg_req(F, n, reqs, 1);
 164                         }
 165
 166                         /* dump assigned registers */
 167                         slots = get_mips_slots(n);
 168                         if (slots && ARR_LEN(attr->slots) > 0) {
 169                                 for (i = 0; i < ARR_LEN(attr->slots); i++) {
 170                                         if (slots[i]) {
 171                                                 fprintf(F, "reg #%d = %s\n", i, slots[i]->name);
 172                                         }
 173                                         else {
 174                                                 fprintf(F, "reg #%d = n/a\n", i);
 175                                         }
 176                                 }
 177                         }
 178                         fprintf(F, "\n");
 179
 180                         /* dump n_res */
 181                         fprintf(F, "n_res = %d\n", get_mips_n_res(n));
 182
 183                         /* dump flags */
 184                         fprintf(F, "flags =");
 185                         if (attr->flags == arch_irn_flags_none) {
 186                                 fprintf(F, " none");
 187                         }
 188                         else {
 189                                 if (attr->flags & arch_irn_flags_dont_spill) {
 190                                         fprintf(F, " unspillable");
 191                                 }
 192                                 if (attr->flags & arch_irn_flags_rematerializable) {
 193                                         fprintf(F, " remat");
 194                                 }
 195                                 if (attr->flags & arch_irn_flags_ignore) {
 196                                         fprintf(F, " ignore");
 197                                 }
 198                         }
 199                         fprintf(F, " (%d)\n", attr->flags);
 200
 201                         if(attr->stack_entity != NULL) {
 202                                 fprintf(F, " stack entity %s\n", get_entity_name(attr->stack_entity));
 203                         }
 204                         if(attr->tv != NULL) {
 205                                 tarval_snprintf(buf, sizeof(buf), attr->tv);
 206                                 fprintf(F, " tarval %s\n", buf);
 207                         }
 208                         if(attr->symconst != NULL) {
 209                                 fprintf(F, " symconst '%s'\n", get_entity_name(attr->symconst));
 210                         }
 211
 212                         fprintf(F, "=== mips attr end ===\n");
 213                         /* end of: case dump_node_info_txt */
 214                         break;
 215         }
 216
 217
 218         return bad;
 219 }
 220
 221
 222
 223 /***************************************************************************************************
 224  *        _   _                   _       __        _                    _   _               _
 225  *       | | | |                 | |     / /       | |                  | | | |             | |
 226  *   __ _| |_| |_ _ __   ___  ___| |_   / /_ _  ___| |_   _ __ ___   ___| |_| |__   ___   __| |___
 227  *  / _` | __| __| '__| / __|/ _ \ __| / / _` |/ _ \ __| | '_ ` _ \ / _ \ __| '_ \ / _ \ / _` / __|
 228  * | (_| | |_| |_| |    \__ \  __/ |_ / / (_| |  __/ |_  | | | | | |  __/ |_| | | | (_) | (_| \__ \
 229  *  \__,_|\__|\__|_|    |___/\___|\__/_/ \__, |\___|\__| |_| |_| |_|\___|\__|_| |_|\___/ \__,_|___/
 230  *                                        __/ |
 231  *                                       |___/
 232  ***************************************************************************************************/
 233
 234 mips_attr_t *get_mips_attr(ir_node *node) {
 235         assert(is_mips_irn(node) && "need mips node to get attributes");
 236         return (mips_attr_t *) get_irn_generic_attr(node);
 237 }
 238
 239 const mips_attr_t *get_mips_attr_const(const ir_node *node) {
 240         assert(is_mips_irn(node) && "need mips node to get attributes");
 241         return get_irn_generic_attr_const(node);
 242 }
 243
 244 /**
 245  * Returns the argument register requirements of a mips node.
 246  */
 247 const arch_register_req_t **get_mips_in_req_all(const ir_node *node) {
 248         const mips_attr_t *attr = get_mips_attr_const(node);
 249         return attr->in_req;
 250 }
 251
 252 /**
 253  * Returns the result register requirements of an mips node.
 254  */
 255 const arch_register_req_t **get_mips_out_req_all(const ir_node *node) {
 256         const mips_attr_t *attr = get_mips_attr_const(node);
 257         return attr->out_req;
 258 }
 259
 260 /**
 261  * Returns the argument register requirement at position pos of an mips node.
 262  */
 263 const arch_register_req_t *get_mips_in_req(const ir_node *node, int pos) {
 264         const mips_attr_t *attr = get_mips_attr_const(node);
 265         return attr->in_req[pos];
 266 }
 267
 268 /**
 269  * Returns the result register requirement at position pos of an mips node.
 270  */
 271 const arch_register_req_t *get_mips_out_req(const ir_node *node, int pos) {
 272         const mips_attr_t *attr = get_mips_attr_const(node);
 273         return attr->out_req[pos];
 274 }
 275
 276 /**
 277  * Sets the OUT register requirements at position pos.
 278  */
 279 void set_mips_req_out(ir_node *node, const arch_register_req_t *req, int pos) {
 280         mips_attr_t *attr   = get_mips_attr(node);
 281         attr->out_req[pos] = req;
 282 }
 283
 284 /**
 285  * Sets the IN register requirements at position pos.
 286  */
 287 void set_mips_req_in(ir_node *node, const arch_register_req_t *req, int pos) {
 288         mips_attr_t *attr  = get_mips_attr(node);
 289         attr->in_req[pos] = req;
 290 }
 291
 292 /**
 293  * Returns the register flag of an mips node.
 294  */
 295 arch_irn_flags_t get_mips_flags(const ir_node *node) {
 296         const mips_attr_t *attr = get_mips_attr_const(node);
 297         return attr->flags;
 298 }
 299
 300 /**
 301  * Sets the register flag of an mips node.
 302  */
 303 void set_mips_flags(ir_node *node, arch_irn_flags_t flags) {
 304         mips_attr_t *attr = get_mips_attr(node);
 305         attr->flags      = flags;
 306 }
 307
 308 /**
 309  * Returns the result register slots of an mips node.
 310  */
 311 const arch_register_t **get_mips_slots(const ir_node *node) {
 312         const mips_attr_t *attr = get_mips_attr_const(node);
 313         return attr->slots;
 314 }
 315
 316 /**
 317  * Returns the name of the OUT register at position pos.
 318  */
 319 const char *get_mips_out_reg_name(const ir_node *node, int pos) {
 320         const mips_attr_t *attr = get_mips_attr_const(node);
 321
 322         assert(is_mips_irn(node) && "Not an mips node.");
 323         assert(pos < ARR_LEN(attr->slots) && "Invalid OUT position.");
 324         assert(attr->slots[pos]  && "No register assigned");
 325
 326         return arch_register_get_name(attr->slots[pos]);
 327 }
 328
 329 /**
 330  * Returns the index of the OUT register at position pos within its register class.
 331  */
 332 int get_mips_out_regnr(const ir_node *node, int pos) {
 333         const mips_attr_t *attr = get_mips_attr_const(node);
 334
 335         assert(is_mips_irn(node) && "Not an mips node.");
 336         assert(pos < ARR_LEN(attr->slots) && "Invalid OUT position.");
 337         assert(attr->slots[pos]  && "No register assigned");
 338
 339         return arch_register_get_index(attr->slots[pos]);
 340 }
 341
 342 /**
 343  * Returns the OUT register at position pos.
 344  */
 345 const arch_register_t *get_mips_out_reg(const ir_node *node, int pos) {
 346         const mips_attr_t *attr = get_mips_attr_const(node);
 347
 348         assert(is_mips_irn(node) && "Not an mips node.");
 349         assert(pos < ARR_LEN(attr->slots) && "Invalid OUT position.");
 350         assert(attr->slots[pos]  && "No register assigned");
 351
 352         return attr->slots[pos];
 353 }
 354
 355 /**
 356  * Returns the number of results.
 357  */
 358 int get_mips_n_res(const ir_node *node) {
 359         const mips_attr_t *attr = get_mips_attr_const(node);
 360         return ARR_LEN(attr->slots);
 361 }
 362
 363 /**
 364  * Initializes the nodes attributes.
 365  */
 366 void init_mips_attributes(ir_node *node, arch_irn_flags_t flags, const arch_register_req_t **in_reqs,
 367                                                   const arch_register_req_t **out_reqs,
 368                                                                                                   const be_execution_unit_t ***execution_units,
 369                                                                                                   int n_res, unsigned latency)
 370 {
 371         ir_graph       *irg  = get_irn_irg(node);
 372         struct obstack *obst = get_irg_obstack(irg);
 373         mips_attr_t    *attr = get_mips_attr(node);
 374
 375         attr->flags   = flags;
 376         attr->out_req = out_reqs;
 377         attr->in_req  = in_reqs;
 378
 379         attr->slots = NEW_ARR_D(const arch_register_t*, obst, n_res);
 380         memset(attr->slots, 0, n_res * sizeof(attr->slots[0]));
 381 }
 382
 383 static
 384 int mips_compare_attr(ir_node *node_a, ir_node *node_b)
 385 {
 386         const mips_attr_t *a = get_mips_attr_const(node_a);
 387         const mips_attr_t *b = get_mips_attr_const(node_b);
 388
 389         if(a->tv != b->tv)
 390                 return 1;
 391         if(a->symconst != b->symconst)
 392                 return 1;
 393         if(a->stack_entity != b->stack_entity)
 394                 return 1;
 395         if(a->flags != b->flags)
 396                 return 1;
 397         if(ARR_LEN(a->slots) != ARR_LEN(b->slots))
 398                 return 1;
 399         if(a->switch_default_pn != b->switch_default_pn)
 400                 return 1;
 401
 402         return 0;
 403 }
 404
 405 /************************************************************************
 406  *  ___ _____     _     _ _
 407  * |_ _|  ___|__ | | __| (_)_ __   __ _
 408  *  | || |_ / _ \| |/ _` | | '_ \ / _` |
 409  *  | ||  _| (_) | | (_| | | | | | (_| |
 410  * |___|_|  \___/|_|\__,_|_|_| |_|\__, |
 411  *                                |___/
 412  ************************************************************************/
 413
 414 #if 0
 415 // test if a tarval can be expressed in a 16bit immediate value
 416 static int is_tarval_16(ir_node* node)
 417 {
 418         mips_attr_t *attr = get_mips_attr(node);
 419         tarval* tv = attr->tv;
 420         long val = get_tarval_long(tv);
 421         if(get_mode_sign(get_irn_mode(node))) {
 422                 if(val < -32768 || val > 32767)
 423                         return 0;
 424         } else {
 425                 unsigned long uval = (unsigned long) val;
 426                 if(uval > 65536)
 427                         return 0;
 428         }
 429
 430         return 1;
 431 }
 432
 433 #define MIPS_MAKE_IFOLDING_TRANSFORM(srcnode, inode, commutative)       \
 434 ir_node *mips_transform_##srcnode(ir_node* node)                                \
 435 {                                                                                                                               \
 436         ir_node* op1 = get_irn_n(node, 0);                                                      \
 437         ir_node* op2 = get_irn_n(node, 1);                                                      \
 438         ir_node* result;                                                                                        \
 439         if(op1 == NULL || op2 == NULL)                                                          \
 440                 return node;                                                                                    \
 441                                                                                                                                 \
 442         if((is_mips_lli(op2) || is_mips_lui(op2)) && is_tarval_16(op2)) {       \
 443                 mips_attr_t *attr, *op_attr = get_mips_attr(op2);               \
 444                 long val = get_tarval_long(op_attr->tv);                                \
 445                 result = new_rd_mips_##inode(get_irn_dbg_info(node), get_irn_irg(node), get_nodes_block(node),  \
 446                         op1);                                                                       \
 447                 attr = get_mips_attr(result);                                                   \
 448                 attr->tv = new_tarval_from_long(val, get_mode_sign(get_irn_mode(node)) ? mode_Hs : mode_Hu);    \
 449                 return result;                                                                                  \
 450         }                                                                                                                       \
 451                                                                                                                                 \
 452         if(commutative && (is_mips_lli(op1) || is_mips_lui(op1)) && is_tarval_16(op1)) {        \
 453                 mips_attr_t *attr, *op_attr = get_mips_attr(op1);       \
 454                 long val = get_tarval_long(op_attr->tv);                                \
 455                 result = new_rd_mips_##inode(get_irn_dbg_info(node), get_irn_irg(node), get_nodes_block(node),  \
 456                         op2);                                                                       \
 457                 attr = get_mips_attr(result);                                                   \
 458                 attr->tv = new_tarval_from_long(val, get_mode_sign(get_irn_mode(node)) ? mode_Hs : mode_Hu);    \
 459                 return result;                                                                                  \
 460         }                                                                                                                       \
 461                                                                                                                                 \
 462         return node;                                                                                            \
 463 }
 464
 465 MIPS_MAKE_IFOLDING_TRANSFORM(addu, addiu, 1)
 466 MIPS_MAKE_IFOLDING_TRANSFORM(and, andi, 1)
 467 MIPS_MAKE_IFOLDING_TRANSFORM(or, ori, 1)
 468 MIPS_MAKE_IFOLDING_TRANSFORM(sra, srai, 0)
 469 MIPS_MAKE_IFOLDING_TRANSFORM(xor, xori, 1)
 470 MIPS_MAKE_IFOLDING_TRANSFORM(sl, sli, 0)
 471 MIPS_MAKE_IFOLDING_TRANSFORM(sr, sri, 0)
 472 MIPS_MAKE_IFOLDING_TRANSFORM(slt, slti, 0)
 473
 474 void mips_init_opcode_transforms(void) {
 475         op_mips_addu->ops.transform_node = mips_transform_addu;
 476         op_mips_and->ops.transform_node = mips_transform_and;
 477         op_mips_or->ops.transform_node  = mips_transform_or;
 478         op_mips_sra->ops.transform_node = mips_transform_sra;
 479         op_mips_xor->ops.transform_node = mips_transform_xor;
 480         op_mips_sl->ops.transform_node  = mips_transform_sl;
 481         op_mips_sr->ops.transform_node  = mips_transform_sr;
 482         op_mips_slt->ops.transform_node = mips_transform_slt;
 483 }
 484 #endif
 485
 486 /***************************************************************************************
 487  *                  _                            _                   _
 488  *                 | |                          | |                 | |
 489  *  _ __   ___   __| | ___    ___ ___  _ __  ___| |_ _ __ _   _  ___| |_ ___  _ __ ___
 490  * | '_ \ / _ \ / _` |/ _ \  / __/ _ \| '_ \/ __| __| '__| | | |/ __| __/ _ \| '__/ __|
 491  * | | | | (_) | (_| |  __/ | (_| (_) | | | \__ \ |_| |  | |_| | (__| || (_) | |  \__ \
 492  * |_| |_|\___/ \__,_|\___|  \___\___/|_| |_|___/\__|_|   \__,_|\___|\__\___/|_|  |___/
 493  *
 494  ***************************************************************************************/
 495
 496 /* Include the generated constructor functions */
 497 #include "gen_mips_new_nodes.c.inl"