nsz Git - libfirm/blob - ir/lower/lower_dw.c

   1 /**
   2  * @file irlwrdw.c
   3  * @date 8.10.2004
   4  * @author Michael Beck
   5  * @brief Lower Double word operations, ie Mode L -> I.
   6  *
   7  * $Id$
   8  */
   9 #ifdef HAVE_CONFIG_H
  10 # include "config.h"
  11 #endif
  12
  13 #ifdef HAVE_MALLOC_H
  14 # include <malloc.h>
  15 #endif
  16 #ifdef HAVE_ALLOCA_H
  17 # include <alloca.h>
  18 #endif
  19 #ifdef HAVE_STRING_H
  20 # include <string.h>
  21 #endif
  22 #ifdef HAVE_STDLIB_H
  23 # include <stdlib.h>
  24 #endif
  25
  26 #include <assert.h>
  27
  28 #include "irnode_t.h"
  29 #include "irgraph_t.h"
  30 #include "irmode_t.h"
  31 #include "iropt_t.h"
  32 #include "irgmod.h"
  33 #include "tv_t.h"
  34 #include "dbginfo_t.h"
  35 #include "iropt_dbg.h"
  36 #include "irflag_t.h"
  37 #include "firmstat.h"
  38 #include "irgwalk.h"
  39 #include "ircons.h"
  40 #include "lower_dw.h"
  41 #include "irflag.h"
  42 #include "irtools.h"
  43 #include "debug.h"
  44 #include "set.h"
  45 #include "pmap.h"
  46 #include "pdeq.h"
  47 #include "irdump.h"
  48
  49 /** A map from mode to a primitive type. */
  50 static pmap *prim_types;
  51
  52 /** A map from (op, imode, omode) to Intrinsic functions entities. */
  53 static set *intrinsic_fkt;
  54
  55 /** A map from (imode, omode) to conv function types. */
  56 static set *conv_types;
  57
  58 /** A map from a method type to its lowered type. */
  59 static pmap *lowered_type;
  60
  61 /** The types for the binop and unop intrinsics. */
  62 static ir_type *binop_tp_u, *binop_tp_s, *unop_tp_u, *unop_tp_s, *shiftop_tp_u, *shiftop_tp_s, *tp_s, *tp_u;
  63
  64 /** the debug handle */
  65 DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL;)
  66
  67 /**
  68  * An entry in the (op, imode, omode) -> entity map.
  69  */
  70 typedef struct _op_mode_entry {
  71         const ir_op   *op;    /**< the op */
  72         const ir_mode *imode; /**< the input mode */
  73         const ir_mode *omode; /**< the output mode */
  74         entity        *ent;   /**< the associated entity of this (op, imode, omode) triple */
  75 } op_mode_entry_t;
  76
  77 /**
  78  * An entry in the (imode, omode) -> tp map.
  79  */
  80 typedef struct _conv_tp_entry {
  81         const ir_mode *imode; /**< the input mode */
  82         const ir_mode *omode; /**< the output mode */
  83         ir_type       *mtd;   /**< the associated method type of this (imode, omode) pair */
  84 } conv_tp_entry_t;
  85
  86 /**
  87  * Every double word node will be replaced,
  88  * we need some store to hold the replacement:
  89  */
  90 typedef struct _node_entry_t {
  91         ir_node *low_word;        /**< the low word */
  92         ir_node *high_word;       /**< the high word */
  93 } node_entry_t;
  94
  95 enum lower_flags {
  96         MUST_BE_LOWERED = 1,   /**< graph must be lowered */
  97         CF_CHANGED      = 2,   /**< control flow was changed */
  98 };
  99
 100 /**
 101  * The lower environment.
 102  */
 103 typedef struct _lower_env_t {
 104         node_entry_t **entries;       /**< entries per node */
 105         struct obstack obst;          /**< an obstack holding the temporary data */
 106         tarval   *tv_mode_bytes;      /**< a tarval containing the number of bytes in the lowered modes */
 107         tarval   *tv_mode_bits;       /**< a tarval containing the number of bits in the lowered modes */
 108         pdeq     *waitq;              /**< a wait queue of all nodes that must be handled later */
 109         pmap     *proj_2_block;       /**< a map from ProjX to its destination blocks */
 110         const lwrdw_param_t *params;  /**< transformation parameter */
 111         unsigned flags;               /**< some flags */
 112         int      n_entries;           /**< number of entries */
 113 } lower_env_t;
 114
 115 /**
 116  * Get a primitive mode for a mode.
 117  */
 118 static ir_type *get_primitive_type(ir_mode *mode) {
 119         pmap_entry *entry = pmap_find(prim_types, mode);
 120         ir_type *tp;
 121         char buf[64];
 122
 123         if (entry)
 124                 return entry->value;
 125
 126         snprintf(buf, sizeof(buf), "_prim_%s", get_mode_name(mode));
 127         tp = new_type_primitive(new_id_from_str(buf), mode);
 128
 129         pmap_insert(prim_types, mode, tp);
 130         return tp;
 131 }
 132
 133 /**
 134  * Create a method type for a Conv emulation from imode to omode.
 135  */
 136 static ir_type *get_conv_type(ir_mode *imode, ir_mode *omode, lower_env_t *env) {
 137         conv_tp_entry_t key, *entry;
 138         ir_type *mtd;
 139
 140         key.imode = imode;
 141         key.omode = omode;
 142         key.mtd   = NULL;
 143
 144         entry = set_insert(conv_types, &key, sizeof(key), HASH_PTR(imode) ^ HASH_PTR(omode));
 145         if (! entry->mtd) {
 146                 int n_param = 1, n_res = 1;
 147                 char buf[64];
 148
 149                 if (imode == env->params->high_signed || imode == env->params->high_unsigned)
 150                         n_param = 2;
 151                 if (omode == env->params->high_signed || omode == env->params->high_unsigned)
 152                         n_res = 2;
 153
 154                 /* create a new one */
 155                 snprintf(buf, sizeof(buf), "LConv%s%s", get_mode_name(imode), get_mode_name(omode));
 156                 mtd = new_type_method(new_id_from_str(buf), n_param, n_res);
 157
 158                 /* set param types and result types */
 159                 n_param = 0;
 160                 if (imode == env->params->high_signed) {
 161                         set_method_param_type(mtd, n_param++, tp_s);
 162                         set_method_param_type(mtd, n_param++, tp_s);
 163                 }
 164                 else if (imode == env->params->high_unsigned) {
 165                         set_method_param_type(mtd, n_param++, tp_u);
 166                         set_method_param_type(mtd, n_param++, tp_u);
 167                 }
 168                 else {
 169                         ir_type *tp = get_primitive_type(imode);
 170                         set_method_param_type(mtd, n_param++, tp);
 171                 }
 172
 173                 n_res = 0;
 174                 if (omode == env->params->high_signed) {
 175                         set_method_res_type(mtd, n_res++, tp_s);
 176                         set_method_res_type(mtd, n_res++, tp_s);
 177                 }
 178                 else if (omode == env->params->high_unsigned) {
 179                         set_method_res_type(mtd, n_res++, tp_u);
 180                         set_method_res_type(mtd, n_res++, tp_u);
 181                 }
 182                 else {
 183                         ir_type *tp = get_primitive_type(omode);
 184                         set_method_res_type(mtd, n_res++, tp);
 185                 }
 186
 187                 entry->mtd = mtd;
 188         }
 189         else
 190                 mtd = entry->mtd;
 191         return mtd;
 192 }
 193
 194 /**
 195  * Add an additional control flow input to a block.
 196  * Patch all Phi nodes. The new Phi inputs are copied from
 197  * old input number nr.
 198  */
 199 static void add_block_cf_input_nr(ir_node *block, int nr, ir_node *cf)
 200 {
 201         int i, arity = get_irn_arity(block);
 202         ir_node **in, *phi;
 203
 204         assert(nr < arity);
 205
 206         NEW_ARR_A(ir_node *, in, arity + 1);
 207         for (i = 0; i < arity; ++i)
 208                 in[i] = get_irn_n(block, i);
 209         in[i] = cf;
 210
 211         set_irn_in(block, i + 1, in);
 212
 213         for (phi = get_irn_link(block); phi; phi = get_irn_link(phi)) {
 214                 for (i = 0; i < arity; ++i)
 215                         in[i] = get_irn_n(phi, i);
 216                 in[i] = in[nr];
 217                 set_irn_in(phi, i + 1, in);
 218         }
 219 }
 220
 221 /**
 222  * Add an additional control flow input to a block.
 223  * Patch all Phi nodes. The new Phi inputs are copied from
 224  * old input from cf tmpl.
 225  */
 226 static void add_block_cf_input(ir_node *block, ir_node *tmpl, ir_node *cf)
 227 {
 228         int i, arity = get_irn_arity(block);
 229         int nr = 0;
 230
 231         for (i = 0; i < arity; ++i) {
 232                 if (get_irn_n(block, i) == tmpl) {
 233                         nr = i;
 234                         break;
 235                 }
 236         }
 237         assert(i < arity);
 238         add_block_cf_input_nr(block, nr, cf);
 239 }
 240
 241 /**
 242  * Return the "operational" mode of a Firm node.
 243  */
 244 static ir_mode *get_irn_op_mode(ir_node *node)
 245 {
 246         switch (get_irn_opcode(node)) {
 247         case iro_Load:
 248                 return get_Load_mode(node);
 249
 250         case iro_Store:
 251                 return get_irn_mode(get_Store_value(node));
 252
 253         case iro_DivMod:
 254                 return get_irn_mode(get_DivMod_left(node));
 255
 256         case iro_Div:
 257                 return get_irn_mode(get_Div_left(node));
 258
 259         case iro_Mod:
 260                 return get_irn_mode(get_Mod_left(node));
 261
 262         case iro_Cmp:
 263                 return get_irn_mode(get_Cmp_left(node));
 264
 265         default:
 266                 return get_irn_mode(node);
 267         }
 268 }
 269
 270 /**
 271  * walker, prepare the node links
 272  */
 273 static void prepare_links(ir_node *node, void *env)
 274 {
 275         lower_env_t  *lenv = env;
 276         ir_mode      *mode = get_irn_op_mode(node);
 277         node_entry_t *link;
 278         int          i;
 279
 280         if (mode == lenv->params->high_signed ||
 281                 mode == lenv->params->high_unsigned) {
 282                 /* ok, found a node that will be lowered */
 283                 link = obstack_alloc(&lenv->obst, sizeof(*link));
 284
 285                 memset(link, 0, sizeof(*link));
 286
 287                 lenv->entries[get_irn_idx(node)] = link;
 288                 lenv->flags |= MUST_BE_LOWERED;
 289         }
 290         else if (get_irn_op(node) == op_Conv) {
 291                 /* Conv nodes have two modes */
 292                 ir_node *pred = get_Conv_op(node);
 293                 mode = get_irn_mode(pred);
 294
 295                 if (mode == lenv->params->high_signed ||
 296                         mode == lenv->params->high_unsigned) {
 297                         /* must lower this node either */
 298                         link = obstack_alloc(&lenv->obst, sizeof(*link));
 299
 300                         memset(link, 0, sizeof(*link));
 301
 302                         lenv->entries[get_irn_idx(node)] = link;
 303                         lenv->flags |= MUST_BE_LOWERED;
 304                 }
 305                 return;
 306         }
 307
 308         if (is_Proj(node)) {
 309                 /* link all Proj nodes to its predecessor:
 310                    Note that Tuple Proj's and its Projs are linked either. */
 311                 ir_node *pred = get_Proj_pred(node);
 312
 313                 set_irn_link(node, get_irn_link(pred));
 314                 set_irn_link(pred, node);
 315         }
 316         else if (is_Phi(node)) {
 317                 /* link all Phi nodes to its block */
 318                 ir_node *block = get_nodes_block(node);
 319
 320                 set_irn_link(node, get_irn_link(block));
 321                 set_irn_link(block, node);
 322         }
 323         else if (is_Block(node)) {
 324                 /* fill the Proj -> Block map */
 325                 for (i = get_Block_n_cfgpreds(node) - 1; i >= 0; --i) {
 326                         ir_node *pred = get_Block_cfgpred(node, i);
 327
 328                         if (is_Proj(pred))
 329                                 pmap_insert(lenv->proj_2_block, pred, node);
 330                 }
 331         }
 332 }
 333
 334 /**
 335  * Translate a Constant: create two.
 336  */
 337 static void lower_Const(ir_node *node, ir_mode *mode, lower_env_t *env) {
 338         tarval   *tv, *tv_l, *tv_h;
 339         ir_node  *low, *high;
 340         dbg_info *dbg = get_irn_dbg_info(node);
 341         ir_node  *block = get_nodes_block(node);
 342         int      idx;
 343
 344         tv   = get_Const_tarval(node);
 345
 346         tv_l = tarval_convert_to(tv, mode);
 347         low  = new_rd_Const(dbg, current_ir_graph, block, mode, tv_l);
 348
 349         tv_h = tarval_convert_to(tarval_shrs(tv, env->tv_mode_bits), mode);
 350         high = new_rd_Const(dbg, current_ir_graph, block, mode, tv_h);
 351
 352         idx = get_irn_idx(node);
 353         assert(idx < env->n_entries);
 354         env->entries[idx]->low_word  = low;
 355         env->entries[idx]->high_word = high;
 356 }
 357
 358 /**
 359  * Translate a Load: create two.
 360  */
 361 static void lower_Load(ir_node *node, ir_mode *mode, lower_env_t *env) {
 362         ir_graph *irg = current_ir_graph;
 363         ir_node  *adr = get_Load_ptr(node);
 364         ir_node  *mem = get_Load_mem(node);
 365         ir_node  *low, *high, *proj;
 366         dbg_info *dbg;
 367         ir_node  *block = get_nodes_block(node);
 368         int      idx;
 369
 370         if (env->params->little_endian) {
 371                 low  = adr;
 372                 high = new_r_Add(irg, block, adr,
 373                         new_r_Const(irg, block, get_tarval_mode(env->tv_mode_bytes), env->tv_mode_bytes),
 374                         get_irn_mode(adr));
 375         }
 376         else {
 377                 low  = new_r_Add(irg, block, adr,
 378                         new_r_Const(irg, block, get_tarval_mode(env->tv_mode_bytes), env->tv_mode_bytes),
 379                         get_irn_mode(adr));
 380                 high = adr;
 381         }
 382
 383         /* create two loads */
 384         dbg  = get_irn_dbg_info(node);
 385         low  = new_rd_Load(dbg, irg, block, mem, low,  mode);
 386         proj = new_r_Proj(irg, block, low, mode_M, pn_Load_M);
 387         high = new_rd_Load(dbg, irg, block, proj, high, mode);
 388
 389         set_Load_volatility(low,  get_Load_volatility(node));
 390         set_Load_volatility(high, get_Load_volatility(node));
 391
 392         idx = get_irn_idx(node);
 393         assert(idx < env->n_entries);
 394         env->entries[idx]->low_word  = low;
 395         env->entries[idx]->high_word = high;
 396
 397         for (proj = get_irn_link(node); proj; proj = get_irn_link(proj)) {
 398                 idx = get_irn_idx(proj);
 399
 400                 switch (get_Proj_proj(proj)) {
 401                 case pn_Load_M:         /* Memory result. */
 402                         /* put it to the second one */
 403                         set_Proj_pred(proj, high);
 404                         break;
 405                 case pn_Load_X_except:  /* Execution result if exception occurred. */
 406                         /* put it to the first one */
 407                         set_Proj_pred(proj, low);
 408                         break;
 409                 case pn_Load_res:       /* Result of load operation. */
 410                         assert(idx < env->n_entries);
 411                         env->entries[idx]->low_word  = new_r_Proj(irg, block, low, mode, pn_Load_res);
 412                         env->entries[idx]->high_word = new_r_Proj(irg, block, high, mode, pn_Load_res);
 413                         break;
 414                 default:
 415                         assert(0 && "unexpected Proj number");
 416                 }
 417                 /* mark this proj: we have handled it already, otherwise we might fall into
 418                  * out new nodes. */
 419                 mark_irn_visited(proj);
 420         }
 421 }
 422
 423 /**
 424  * Translate a Store: create two.
 425  */
 426 static void lower_Store(ir_node *node, ir_mode *mode, lower_env_t *env) {
 427         ir_graph *irg;
 428         ir_node  *block, *adr, *mem;
 429         ir_node  *low, *high, *irn, *proj;
 430         dbg_info *dbg;
 431         int      idx;
 432         node_entry_t *entry;
 433
 434         irn = get_Store_value(node);
 435         entry = env->entries[get_irn_idx(irn)];
 436         assert(entry);
 437
 438         if (! entry->low_word) {
 439                 /* not ready yet, wait */
 440                 pdeq_putr(env->waitq, node);
 441                 return;
 442         }
 443
 444         irg = current_ir_graph;
 445         adr = get_Store_ptr(node);
 446         mem = get_Store_mem(node);
 447         block = get_nodes_block(node);
 448
 449         if (env->params->little_endian) {
 450                 low  = adr;
 451                 high = new_r_Add(irg, block, adr,
 452                         new_r_Const(irg, block, get_tarval_mode(env->tv_mode_bytes), env->tv_mode_bytes),
 453                         get_irn_mode(adr));
 454         }
 455         else {
 456                 low  = new_r_Add(irg, block, adr,
 457                         new_r_Const(irg, block, get_tarval_mode(env->tv_mode_bytes), env->tv_mode_bytes),
 458                         get_irn_mode(adr));
 459                 high = adr;
 460         }
 461
 462         /* create two Stores */
 463         dbg = get_irn_dbg_info(node);
 464         low  = new_rd_Store(dbg, irg, block, mem, low,  entry->low_word);
 465         proj = new_r_Proj(irg, block, low, mode_M, pn_Store_M);
 466         high = new_rd_Store(dbg, irg, block, proj, high, entry->high_word);
 467
 468         set_Store_volatility(low,  get_Store_volatility(node));
 469         set_Store_volatility(high, get_Store_volatility(node));
 470
 471         idx = get_irn_idx(node);
 472         assert(idx < env->n_entries);
 473         env->entries[idx]->low_word  = low;
 474         env->entries[idx]->high_word = high;
 475
 476         for (proj = get_irn_link(node); proj; proj = get_irn_link(proj)) {
 477                 idx = get_irn_idx(proj);
 478
 479                 switch (get_Proj_proj(proj)) {
 480                 case pn_Store_M:         /* Memory result. */
 481                         /* put it to the second one */
 482                         set_Proj_pred(proj, high);
 483                         break;
 484                 case pn_Store_X_except:  /* Execution result if exception occurred. */
 485                         /* put it to the first one */
 486                         set_Proj_pred(proj, low);
 487                         break;
 488                 default:
 489                         assert(0 && "unexpected Proj number");
 490                 }
 491                 /* mark this proj: we have handled it already, otherwise we might fall into
 492                  * out new nodes. */
 493                 mark_irn_visited(proj);
 494         }
 495 }
 496
 497 /**
 498  * Return a node containing the address of the intrinsic emulation function.
 499  *
 500  * @param method  the method type of the emulation function
 501  * @param op      the emulated ir_op
 502  * @param imode   the input mode of the emulated opcode
 503  * @param omode   the output mode of the emulated opcode
 504  * @param block   where the new mode is created
 505  * @param env     the lower environment
 506  */
 507 static ir_node *get_intrinsic_address(ir_type *method, ir_op *op,
 508                                       ir_mode *imode, ir_mode *omode,
 509                                       ir_node *block, lower_env_t *env) {
 510         symconst_symbol sym;
 511         entity *ent;
 512         op_mode_entry_t key, *entry;
 513
 514         key.op    = op;
 515         key.imode = imode;
 516         key.omode = omode;
 517         key.ent   = NULL;
 518
 519         entry = set_insert(intrinsic_fkt, &key, sizeof(key),
 520                                 HASH_PTR(op) ^ HASH_PTR(imode) ^ (HASH_PTR(omode) << 8));
 521         if (! entry->ent) {
 522                 /* create a new one */
 523                 ent = env->params->create_intrinsic(method, op, imode, omode, env->params->ctx);
 524
 525                 assert(ent && "Intrinsic creator must return an entity");
 526                 entry->ent = ent;
 527         }
 528         else
 529                 ent = entry->ent;
 530
 531         sym.entity_p = ent;
 532         return new_r_SymConst(current_ir_graph, block, sym, symconst_addr_ent);
 533 }
 534
 535 /**
 536  * Translate a Div.
 537  *
 538  * Create an intrinsic Call.
 539  */
 540 static void lower_Div(ir_node *node, ir_mode *mode, lower_env_t *env) {
 541         ir_node  *block, *irn, *call, *proj;
 542         ir_node  *in[4];
 543         ir_mode  *opmode;
 544         dbg_info *dbg;
 545         ir_type  *mtp;
 546         int      idx;
 547         node_entry_t *entry;
 548
 549         irn   = get_Div_left(node);
 550         entry = env->entries[get_irn_idx(irn)];
 551         assert(entry);
 552
 553         if (! entry->low_word) {
 554                 /* not ready yet, wait */
 555                 pdeq_putr(env->waitq, node);
 556                 return;
 557         }
 558
 559         in[0] = entry->low_word;
 560         in[1] = entry->high_word;
 561
 562         irn   = get_Div_right(node);
 563         entry = env->entries[get_irn_idx(irn)];
 564         assert(entry);
 565
 566         if (! entry->low_word) {
 567                 /* not ready yet, wait */
 568                 pdeq_putr(env->waitq, node);
 569                 return;
 570         }
 571
 572         in[2] = entry->low_word;
 573         in[3] = entry->high_word;
 574
 575         dbg = get_irn_dbg_info(node);
 576         block = get_nodes_block(node);
 577
 578         mtp = mode_is_signed(mode) ? binop_tp_s : binop_tp_u;
 579         opmode = get_irn_op_mode(node);
 580         irn = get_intrinsic_address(mtp, get_irn_op(node), opmode, opmode, block, env);
 581         call = new_rd_Call(dbg, current_ir_graph, block, get_Div_mem(node),
 582                 irn, 4, in, mtp);
 583         set_irn_pinned(call, get_irn_pinned(node));
 584         irn = new_r_Proj(current_ir_graph, block, call, mode_T, pn_Call_T_result);
 585
 586         for (proj = get_irn_link(node); proj; proj = get_irn_link(proj)) {
 587                 switch (get_Proj_proj(proj)) {
 588                 case pn_Div_M:         /* Memory result. */
 589                         /* reroute to the call */
 590                         set_Proj_pred(proj, call);
 591                         set_Proj_proj(proj, pn_Call_M_except);
 592                         break;
 593                 case pn_Div_X_except:  /* Execution result if exception occurred. */
 594                         /* reroute to the call */
 595                         set_Proj_pred(proj, call);
 596                         set_Proj_proj(proj, pn_Call_X_except);
 597                         break;
 598                 case pn_Div_res:       /* Result of computation. */
 599                         idx = get_irn_idx(proj);
 600                         assert(idx < env->n_entries);
 601                         env->entries[idx]->low_word  = new_r_Proj(current_ir_graph, block, irn, mode, 0);
 602                         env->entries[idx]->high_word = new_r_Proj(current_ir_graph, block, irn, mode, 1);
 603                         break;
 604                 default:
 605                         assert(0 && "unexpected Proj number");
 606                 }
 607                 /* mark this proj: we have handled it already, otherwise we might fall into
 608                  * out new nodes. */
 609                 mark_irn_visited(proj);
 610         }
 611 }
 612
 613 /**
 614  * Translate a Mod.
 615  *
 616  * Create an intrinsic Call.
 617  */
 618 static void lower_Mod(ir_node *node, ir_mode *mode, lower_env_t *env) {
 619         ir_node  *block, *proj, *irn, *call;
 620         ir_node  *in[4];
 621         ir_mode  *opmode;
 622         dbg_info *dbg;
 623         ir_type  *mtp;
 624         int      idx;
 625         node_entry_t *entry;
 626
 627         irn   = get_Mod_left(node);
 628         entry = env->entries[get_irn_idx(irn)];
 629         assert(entry);
 630
 631         if (! entry->low_word) {
 632                 /* not ready yet, wait */
 633                 pdeq_putr(env->waitq, node);
 634                 return;
 635         }
 636
 637         in[0] = entry->low_word;
 638         in[1] = entry->high_word;
 639
 640         irn   = get_Mod_right(node);
 641         entry = env->entries[get_irn_idx(irn)];
 642         assert(entry);
 643
 644         if (! entry->low_word) {
 645                 /* not ready yet, wait */
 646                 pdeq_putr(env->waitq, node);
 647                 return;
 648         }
 649
 650         in[2] = entry->low_word;
 651         in[3] = entry->high_word;
 652
 653         dbg = get_irn_dbg_info(node);
 654         block = get_nodes_block(node);
 655
 656         mtp = mode_is_signed(mode) ? binop_tp_s : binop_tp_u;
 657         opmode = get_irn_op_mode(node);
 658         irn = get_intrinsic_address(mtp, get_irn_op(node), opmode, opmode, block, env);
 659         call = new_rd_Call(dbg, current_ir_graph, block, get_Mod_mem(node),
 660                 irn, 4, in, mtp);
 661         set_irn_pinned(call, get_irn_pinned(node));
 662         irn = new_r_Proj(current_ir_graph, block, call, mode_T, pn_Call_T_result);
 663
 664         for (proj = get_irn_link(node); proj; proj = get_irn_link(proj)) {
 665                 switch (get_Proj_proj(proj)) {
 666                 case pn_Mod_M:         /* Memory result. */
 667                         /* reroute to the call */
 668                         set_Proj_pred(proj, call);
 669                         set_Proj_proj(proj, pn_Call_M_except);
 670                         break;
 671                 case pn_Mod_X_except:  /* Execution result if exception occurred. */
 672                         /* reroute to the call */
 673                         set_Proj_pred(proj, call);
 674                         set_Proj_proj(proj, pn_Call_X_except);
 675                         break;
 676                 case pn_Mod_res:       /* Result of computation. */
 677                         idx = get_irn_idx(proj);
 678                         assert(idx < env->n_entries);
 679                         env->entries[idx]->low_word  = new_r_Proj(current_ir_graph, block, irn, mode, 0);
 680                         env->entries[idx]->high_word = new_r_Proj(current_ir_graph, block, irn, mode, 1);
 681                         break;
 682                 default:
 683                         assert(0 && "unexpected Proj number");
 684                 }
 685                 /* mark this proj: we have handled it already, otherwise we might fall into
 686                  * out new nodes. */
 687                 mark_irn_visited(proj);
 688         }
 689 }
 690
 691 /**
 692  * Translate a DivMod.
 693  *
 694  * Create two intrinsic Calls.
 695  */
 696 static void lower_DivMod(ir_node *node, ir_mode *mode, lower_env_t *env) {
 697         ir_node  *block, *proj, *irn, *mem, *callDiv, *callMod, *resDiv, *resMod;
 698         ir_node  *in[4];
 699         ir_mode  *opmode;
 700         dbg_info *dbg;
 701         ir_type  *mtp;
 702         int      idx;
 703         node_entry_t *entry;
 704         unsigned flags = 0;
 705
 706         /* check if both results are needed */
 707         for (proj = get_irn_link(node); proj; proj = get_irn_link(proj)) {
 708                 switch (get_Proj_proj(proj)) {
 709                 case pn_DivMod_res_div: flags |= 1; break;
 710                 case pn_DivMod_res_mod: flags |= 2; break;
 711                 default: break;
 712                 }
 713         }
 714
 715         irn   = get_DivMod_left(node);
 716         entry = env->entries[get_irn_idx(irn)];
 717         assert(entry);
 718
 719         if (! entry->low_word) {
 720                 /* not ready yet, wait */
 721                 pdeq_putr(env->waitq, node);
 722                 return;
 723         }
 724
 725         in[0] = entry->low_word;
 726         in[1] = entry->high_word;
 727
 728         irn   = get_DivMod_right(node);
 729         entry = env->entries[get_irn_idx(irn)];
 730         assert(entry);
 731
 732         if (! entry->low_word) {
 733                 /* not ready yet, wait */
 734                 pdeq_putr(env->waitq, node);
 735                 return;
 736         }
 737
 738         in[2] = entry->low_word;
 739         in[3] = entry->high_word;
 740
 741         dbg = get_irn_dbg_info(node);
 742         block = get_nodes_block(node);
 743
 744         mem = get_DivMod_mem(node);
 745
 746         callDiv = callMod = NULL;
 747         mtp = mode_is_signed(mode) ? binop_tp_s : binop_tp_u;
 748         if (flags & 1) {
 749                 opmode = get_irn_op_mode(node);
 750                 irn = get_intrinsic_address(mtp, op_Div, opmode, opmode, block, env);
 751                 callDiv = new_rd_Call(dbg, current_ir_graph, block, mem,
 752                         irn, 4, in, mtp);
 753                 set_irn_pinned(callDiv, get_irn_pinned(node));
 754                 resDiv = new_r_Proj(current_ir_graph, block, callDiv, mode_T, pn_Call_T_result);
 755         }
 756         if (flags & 2) {
 757                 if (flags & 1)
 758                         mem = new_r_Proj(current_ir_graph, block, callDiv, mode_M, pn_Call_M);
 759                 opmode = get_irn_op_mode(node);
 760                 irn = get_intrinsic_address(mtp, op_Mod, opmode, opmode, block, env);
 761                 callMod = new_rd_Call(dbg, current_ir_graph, block, mem,
 762                         irn, 4, in, mtp);
 763                 set_irn_pinned(callMod, get_irn_pinned(node));
 764                 resMod = new_r_Proj(current_ir_graph, block, callMod, mode_T, pn_Call_T_result);
 765         }
 766
 767         for (proj = get_irn_link(node); proj; proj = get_irn_link(proj)) {
 768                 switch (get_Proj_proj(proj)) {
 769                 case pn_DivMod_M:         /* Memory result. */
 770                         /* reroute to the first call */
 771                         set_Proj_pred(proj, callDiv ? callDiv : (callMod ? callMod : mem));
 772                         set_Proj_proj(proj, pn_Call_M_except);
 773                         break;
 774                 case pn_DivMod_X_except:  /* Execution result if exception occurred. */
 775                         /* reroute to the first call */
 776                         set_Proj_pred(proj, callDiv ? callDiv : (callMod ? callMod : mem));
 777                         set_Proj_proj(proj, pn_Call_X_except);
 778                         break;
 779                 case pn_DivMod_res_div:   /* Result of Div. */
 780                         idx = get_irn_idx(proj);
 781                         assert(idx < env->n_entries);
 782                         env->entries[idx]->low_word  = new_r_Proj(current_ir_graph, block, resDiv, mode, 0);
 783                         env->entries[idx]->high_word = new_r_Proj(current_ir_graph, block, resDiv, mode, 1);
 784                         break;
 785                 case pn_DivMod_res_mod:   /* Result of Mod. */
 786                         idx = get_irn_idx(proj);
 787                         env->entries[idx]->low_word  = new_r_Proj(current_ir_graph, block, resMod, mode, 0);
 788                         env->entries[idx]->high_word = new_r_Proj(current_ir_graph, block, resMod, mode, 1);
 789                         break;
 790                 default:
 791                         assert(0 && "unexpected Proj number");
 792                 }
 793                 /* mark this proj: we have handled it already, otherwise we might fall into
 794                  * out new nodes. */
 795                 mark_irn_visited(proj);
 796         }
 797 }
 798
 799 /**
 800  * Translate a Binop.
 801  *
 802  * Create an intrinsic Call.
 803  */
 804 static void lower_Binop(ir_node *node, ir_mode *mode, lower_env_t *env) {
 805         ir_node  *block, *irn;
 806         ir_node  *in[4];
 807         dbg_info *dbg;
 808         ir_type  *mtp;
 809         int      idx;
 810         node_entry_t *entry;
 811
 812         irn   = get_binop_left(node);
 813         entry = env->entries[get_irn_idx(irn)];
 814         assert(entry);
 815
 816         if (! entry->low_word) {
 817                 /* not ready yet, wait */
 818                 pdeq_putr(env->waitq, node);
 819                 return;
 820         }
 821
 822         in[0] = entry->low_word;
 823         in[1] = entry->high_word;
 824
 825         irn   = get_binop_right(node);
 826         entry = env->entries[get_irn_idx(irn)];
 827         assert(entry);
 828
 829         if (! entry->low_word) {
 830                 /* not ready yet, wait */
 831                 pdeq_putr(env->waitq, node);
 832                 return;
 833         }
 834
 835         in[2] = entry->low_word;
 836         in[3] = entry->high_word;
 837
 838         dbg = get_irn_dbg_info(node);
 839         block = get_nodes_block(node);
 840
 841         mtp = mode_is_signed(mode) ? binop_tp_s : binop_tp_u;
 842         irn = get_intrinsic_address(mtp, get_irn_op(node), mode, mode, block, env);
 843         irn = new_rd_Call(dbg, current_ir_graph, block, get_irg_no_mem(current_ir_graph),
 844                 irn, 4, in, mtp);
 845         set_irn_pinned(irn, get_irn_pinned(node));
 846         irn = new_r_Proj(current_ir_graph, block, irn, mode_T, pn_Call_T_result);
 847
 848         idx = get_irn_idx(node);
 849         assert(idx < env->n_entries);
 850         env->entries[idx]->low_word  = new_r_Proj(current_ir_graph, block, irn, mode, 0);
 851         env->entries[idx]->high_word = new_r_Proj(current_ir_graph, block, irn, mode, 1);
 852 }
 853
 854 /**
 855  * Translate a Shiftop.
 856  *
 857  * Create an intrinsic Call.
 858  */
 859 static void lower_Shiftop(ir_node *node, ir_mode *mode, lower_env_t *env) {
 860         ir_node  *block, *irn;
 861         ir_node  *in[3];
 862         dbg_info *dbg;
 863         ir_type  *mtp;
 864         int      idx;
 865         node_entry_t *entry;
 866
 867         irn   = get_binop_left(node);
 868         entry = env->entries[get_irn_idx(irn)];
 869         assert(entry);
 870
 871         if (! entry->low_word) {
 872                 /* not ready yet, wait */
 873                 pdeq_putr(env->waitq, node);
 874                 return;
 875         }
 876
 877         in[0] = entry->low_word;
 878         in[1] = entry->high_word;
 879
 880         /* The shift count is always mode_Iu in firm, so there is no need for lowering */
 881         in[2] = get_binop_right(node);
 882
 883         dbg   = get_irn_dbg_info(node);
 884         block = get_nodes_block(node);
 885
 886         mtp = mode_is_signed(mode) ? shiftop_tp_s : shiftop_tp_u;
 887         irn = get_intrinsic_address(mtp, get_irn_op(node), mode, mode, block, env);
 888         irn = new_rd_Call(dbg, current_ir_graph, block, get_irg_no_mem(current_ir_graph),
 889                 irn, 3, in, mtp);
 890         set_irn_pinned(irn, get_irn_pinned(node));
 891         irn = new_r_Proj(current_ir_graph, block, irn, mode_T, pn_Call_T_result);
 892
 893         idx = get_irn_idx(node);
 894         assert(idx < env->n_entries);
 895         env->entries[idx]->low_word  = new_r_Proj(current_ir_graph, block, irn, mode, 0);
 896         env->entries[idx]->high_word = new_r_Proj(current_ir_graph, block, irn, mode, 1);
 897 }
 898
 899 /**
 900  * Translate a Shr and handle special cases.
 901  */
 902 static void lower_Shr(ir_node *node, ir_mode *mode, lower_env_t *env) {
 903         ir_node *right = get_Shr_right(node);
 904
 905         if (get_mode_arithmetic(mode) == irma_twos_complement && is_Const(right)) {
 906                 tarval *tv = get_Const_tarval(right);
 907
 908                 if (tarval_is_long(tv) &&
 909                         get_tarval_long(tv) >= get_mode_size_bits(mode)) {
 910                         ir_node *block = get_nodes_block(node);
 911                         ir_node *left = get_Shr_left(node);
 912                         ir_node *c;
 913                         long shf_cnt = get_tarval_long(tv) - get_mode_size_bits(mode);
 914                         int idx = get_irn_idx(left);
 915
 916                         left = env->entries[idx]->high_word;
 917                         idx = get_irn_idx(node);
 918
 919                         if (shf_cnt > 0) {
 920                                 c = new_r_Const_long(current_ir_graph, block, mode_Iu, shf_cnt);
 921                                 env->entries[idx]->low_word = new_r_Shr(current_ir_graph, block, left, c, mode);
 922                         }
 923                         else
 924                                 env->entries[idx]->low_word = left;
 925                         env->entries[idx]->high_word = new_r_Const(current_ir_graph, block, mode, get_mode_null(mode));
 926
 927                         return;
 928                 }
 929         }
 930         lower_Shiftop(node, mode, env);
 931 }
 932
 933 /**
 934  * Translate a Shl and handle special cases.
 935  */
 936 static void lower_Shl(ir_node *node, ir_mode *mode, lower_env_t *env) {
 937         ir_node *right = get_Shl_right(node);
 938
 939         if (get_mode_arithmetic(mode) == irma_twos_complement && is_Const(right)) {
 940                 tarval *tv = get_Const_tarval(right);
 941
 942                 if (tarval_is_long(tv) &&
 943                         get_tarval_long(tv) >= get_mode_size_bits(mode)) {
 944                         ir_node *block = get_nodes_block(node);
 945                         ir_node *left = get_Shl_left(node);
 946                         ir_node *c;
 947                         long shf_cnt = get_tarval_long(tv) - get_mode_size_bits(mode);
 948                         int idx = get_irn_idx(left);
 949
 950                         left = env->entries[idx]->low_word;
 951                         idx = get_irn_idx(node);
 952
 953                         if (shf_cnt > 0) {
 954                                 c = new_r_Const_long(current_ir_graph, block, mode_Iu, shf_cnt);
 955                                 env->entries[idx]->high_word = new_r_Shl(current_ir_graph, block, left, c, mode);
 956                         }
 957                         else
 958                                 env->entries[idx]->high_word = left;
 959                         env->entries[idx]->low_word  = new_r_Const(current_ir_graph, block, mode, get_mode_null(mode));
 960
 961                         return;
 962                 }
 963         }
 964         lower_Shiftop(node, mode, env);
 965 }
 966
 967 /**
 968  * Translate a Shrs and handle special cases.
 969  */
 970 static void lower_Shrs(ir_node *node, ir_mode *mode, lower_env_t *env) {
 971         ir_node *right = get_Shrs_right(node);
 972
 973         if (get_mode_arithmetic(mode) == irma_twos_complement && is_Const(right)) {
 974                 tarval *tv = get_Const_tarval(right);
 975
 976                 if (tarval_is_long(tv) &&
 977                         get_tarval_long(tv) >= get_mode_size_bits(mode)) {
 978                         ir_node *block = get_nodes_block(node);
 979                         ir_node *left = get_Shrs_left(node);
 980                         long shf_cnt = get_tarval_long(tv) - get_mode_size_bits(mode);
 981                         ir_node *c;
 982                         int idx = get_irn_idx(left);
 983
 984                         left = env->entries[idx]->high_word;
 985                         idx = get_irn_idx(node);
 986
 987                         if (shf_cnt > 0) {
 988                                 c = new_r_Const_long(current_ir_graph, block, mode_Iu, shf_cnt);
 989                                 env->entries[idx]->low_word = new_r_Shrs(current_ir_graph, block, left, c, mode);
 990                         }
 991                         else
 992                                 env->entries[idx]->low_word = left;
 993
 994                         c = new_r_Const_long(current_ir_graph, block, mode_Iu, get_mode_size_bits(mode) - 1);
 995                         env->entries[idx]->high_word = new_r_Shrs(current_ir_graph, block, left, c, mode);
 996
 997                         return;
 998                 }
 999         }
1000         lower_Shiftop(node, mode, env);
1001 }
1002
1003 /**
1004  * Translate a Rot and handle special cases.
1005  */
1006 static void lower_Rot(ir_node *node, ir_mode *mode, lower_env_t *env) {
1007         ir_node *right = get_Rot_right(node);
1008
1009         if (get_mode_arithmetic(mode) == irma_twos_complement && is_Const(right)) {
1010                 tarval *tv = get_Const_tarval(right);
1011
1012                 if (tarval_is_long(tv) &&
1013                         get_tarval_long(tv) == get_mode_size_bits(mode)) {
1014                         ir_node *left = get_Rot_left(node);
1015                         ir_node *h, *l;
1016                         int idx = get_irn_idx(left);
1017
1018                         l = env->entries[idx]->low_word;
1019                         h = env->entries[idx]->high_word;
1020                         idx = get_irn_idx(node);
1021
1022                         env->entries[idx]->low_word  = h;
1023                         env->entries[idx]->high_word = l;
1024
1025                         return;
1026                 }
1027         }
1028         lower_Shiftop(node, mode, env);
1029 }
1030 /**
1031  * Translate an Unop.
1032  *
1033  * Create an intrinsic Call.
1034  */
1035 static void lower_Unop(ir_node *node, ir_mode *mode, lower_env_t *env) {
1036         ir_node  *block, *irn;
1037         ir_node  *in[2];
1038         dbg_info *dbg;
1039         ir_type  *mtp;
1040         int      idx;
1041         node_entry_t *entry;
1042
1043         irn   = get_unop_op(node);
1044         entry = env->entries[get_irn_idx(irn)];
1045         assert(entry);
1046
1047         if (! entry->low_word) {
1048                 /* not ready yet, wait */
1049                 pdeq_putr(env->waitq, node);
1050                 return;
1051         }
1052
1053         in[0] = entry->low_word;
1054         in[1] = entry->high_word;
1055
1056         dbg = get_irn_dbg_info(node);
1057         block = get_nodes_block(node);
1058
1059         mtp = mode_is_signed(mode) ? unop_tp_s : unop_tp_u;
1060         irn = get_intrinsic_address(mtp, get_irn_op(node), mode, mode, block, env);
1061         irn = new_rd_Call(dbg, current_ir_graph, block, get_irg_no_mem(current_ir_graph),
1062                 irn, 2, in, mtp);
1063         set_irn_pinned(irn, get_irn_pinned(node));
1064         irn = new_r_Proj(current_ir_graph, block, irn, mode_T, pn_Call_T_result);
1065
1066         idx = get_irn_idx(node);
1067         assert(idx < env->n_entries);
1068         env->entries[idx]->low_word  = new_r_Proj(current_ir_graph, block, irn, mode, 0);
1069         env->entries[idx]->high_word = new_r_Proj(current_ir_graph, block, irn, mode, 1);
1070 }
1071
1072 /**
1073  * Translate a logical Binop.
1074  *
1075  * Create two logical Binops.
1076  */
1077 static void lower_Binop_logical(ir_node *node, ir_mode *mode, lower_env_t *env,
1078                                                                 ir_node *(*constr_rd)(dbg_info *db, ir_graph *irg, ir_node *block, ir_node *op1, ir_node *op2, ir_mode *mode) ) {
1079         ir_node  *block, *irn;
1080         ir_node  *lop_l, *lop_h, *rop_l, *rop_h;
1081         dbg_info *dbg;
1082         int      idx;
1083         node_entry_t *entry;
1084
1085         irn   = get_binop_left(node);
1086         entry = env->entries[get_irn_idx(irn)];
1087         assert(entry);
1088
1089         if (! entry->low_word) {
1090                 /* not ready yet, wait */
1091                 pdeq_putr(env->waitq, node);
1092                 return;
1093         }
1094
1095         lop_l = entry->low_word;
1096         lop_h = entry->high_word;
1097
1098         irn   = get_binop_right(node);
1099         entry = env->entries[get_irn_idx(irn)];
1100         assert(entry);
1101
1102         if (! entry->low_word) {
1103                 /* not ready yet, wait */
1104                 pdeq_putr(env->waitq, node);
1105                 return;
1106         }
1107
1108         rop_l = entry->low_word;
1109         rop_h = entry->high_word;
1110
1111         dbg = get_irn_dbg_info(node);
1112         block = get_nodes_block(node);
1113
1114         idx = get_irn_idx(node);
1115         assert(idx < env->n_entries);
1116         env->entries[idx]->low_word  = constr_rd(dbg, current_ir_graph, block, lop_l, rop_l, mode);
1117         env->entries[idx]->high_word = constr_rd(dbg, current_ir_graph, block, lop_h, rop_h, mode);
1118 }
1119
1120 /** create a logical operation tranformation */
1121 #define lower_logical(op)                                                \
1122 static void lower_##op(ir_node *node, ir_mode *mode, lower_env_t *env) { \
1123         lower_Binop_logical(node, mode, env, new_rd_##op);                   \
1124 }
1125
1126 lower_logical(And)
1127 lower_logical(Or)
1128 lower_logical(Eor)
1129
1130 /**
1131  * Translate a Not.
1132  *
1133  * Create two logical Nots.
1134  */
1135 static void lower_Not(ir_node *node, ir_mode *mode, lower_env_t *env) {
1136         ir_node  *block, *irn;
1137         ir_node  *op_l, *op_h;
1138         dbg_info *dbg;
1139         int      idx;
1140         node_entry_t *entry;
1141
1142         irn   = get_Not_op(node);
1143         entry = env->entries[get_irn_idx(irn)];
1144         assert(entry);
1145
1146         if (! entry->low_word) {
1147                 /* not ready yet, wait */
1148                 pdeq_putr(env->waitq, node);
1149                 return;
1150         }
1151
1152         op_l = entry->low_word;
1153         op_h = entry->high_word;
1154
1155         dbg = get_irn_dbg_info(node);
1156         block = get_nodes_block(node);
1157
1158         idx = get_irn_idx(node);
1159         assert(idx < env->n_entries);
1160         env->entries[idx]->low_word  = new_rd_Not(dbg, current_ir_graph, block, op_l, mode);
1161         env->entries[idx]->high_word = new_rd_Not(dbg, current_ir_graph, block, op_h, mode);
1162 }
1163
1164 /**
1165  * Translate a Cond.
1166  */
1167 static void lower_Cond(ir_node *node, ir_mode *mode, lower_env_t *env) {
1168         ir_node *cmp, *left, *right, *block;
1169         ir_node *sel = get_Cond_selector(node);
1170         ir_mode *m = get_irn_mode(sel);
1171         int     idx;
1172
1173         if (m == mode_b) {
1174                 node_entry_t *lentry, *rentry;
1175                 ir_node  *proj, *projT = NULL, *projF = NULL;
1176                 ir_node  *new_bl, *cmpH, *cmpL, *irn;
1177                 ir_node  *projHF, *projHT;
1178                 ir_node  *dst_blk;
1179                 ir_graph *irg;
1180                 pn_Cmp   pnc;
1181                 dbg_info *dbg;
1182
1183                 cmp   = get_Proj_pred(sel);
1184                 left  = get_Cmp_left(cmp);
1185                 idx   = get_irn_idx(left);
1186                 lentry = env->entries[idx];
1187
1188                 if (! lentry)
1189                         /* a normal Cmp */
1190                         return;
1191
1192                 right = get_Cmp_right(cmp);
1193                 idx   = get_irn_idx(right);
1194                 rentry = env->entries[idx];
1195                 assert(rentry);
1196
1197                 if (! lentry->low_word || !rentry->low_word) {
1198                         /* not yet ready */
1199                         pdeq_putr(env->waitq, node);
1200                         return;
1201                 }
1202
1203                 /* all right, build the code */
1204                 for (proj = get_irn_link(node); proj; proj = get_irn_link(proj)) {
1205                         long proj_nr = get_Proj_proj(proj);
1206
1207                         if (proj_nr == pn_Cond_true) {
1208                                 assert(projT == NULL && "more than one Proj(true)");
1209                                 projT = proj;
1210                         }
1211                         else {
1212                                 assert(proj_nr == pn_Cond_false);
1213                                 assert(projF == NULL && "more than one Proj(false)");
1214                                 projF = proj;
1215                         }
1216                         mark_irn_visited(proj);
1217                 }
1218                 assert(projT && projF);
1219
1220                 /* create a new high compare */
1221                 block = get_nodes_block(cmp);
1222                 dbg   = get_irn_dbg_info(cmp);
1223                 irg   = current_ir_graph;
1224
1225                 cmpH = new_rd_Cmp(dbg, irg, block, lentry->high_word, rentry->high_word);
1226
1227                 pnc = get_Proj_proj(sel);
1228                 if (pnc == pn_Cmp_Eq) {
1229                         /* simple case:a == b <==> a_h == b_h && a_l == b_l */
1230                         pmap_entry *entry = pmap_find(env->proj_2_block, projF);
1231
1232                         assert(entry);
1233                         dst_blk = entry->value;
1234
1235                         irn = new_r_Proj(irg, block, cmpH, mode_b, pn_Cmp_Eq);
1236                         dbg = get_irn_dbg_info(node);
1237                         irn = new_rd_Cond(dbg, irg, block, irn);
1238
1239                         projHF = new_r_Proj(irg, block, irn, mode_X, pn_Cond_false);
1240                         mark_irn_visited(projHF);
1241                         exchange(projF, projHF);
1242
1243                         projHT = new_r_Proj(irg, block, irn, mode_X, pn_Cond_true);
1244                         mark_irn_visited(projHT);
1245
1246                         new_bl = new_r_Block(irg, 1, &projHT);
1247
1248                         dbg   = get_irn_dbg_info(cmp);
1249                         cmpL = new_rd_Cmp(dbg, irg, new_bl, lentry->low_word, rentry->low_word);
1250                         irn = new_r_Proj(irg, new_bl, cmpL, mode_b, pn_Cmp_Eq);
1251                         dbg = get_irn_dbg_info(node);
1252                         irn = new_rd_Cond(dbg, irg, new_bl, irn);
1253
1254                         proj = new_r_Proj(irg, new_bl, irn, mode_X, pn_Cond_false);
1255                         mark_irn_visited(proj);
1256                         add_block_cf_input(dst_blk, projHF, proj);
1257
1258                         proj = new_r_Proj(irg, new_bl, irn, mode_X, pn_Cond_true);
1259                         mark_irn_visited(proj);
1260                         exchange(projT, proj);
1261                 }
1262                 else if (pnc == pn_Cmp_Lg) {
1263                         /* simple case:a != b <==> a_h != b_h || a_l != b_l */
1264                         pmap_entry *entry = pmap_find(env->proj_2_block, projT);
1265
1266                         assert(entry);
1267                         dst_blk = entry->value;
1268
1269                         irn = new_r_Proj(irg, block, cmpH, mode_b, pn_Cmp_Lg);
1270                         dbg = get_irn_dbg_info(node);
1271                         irn = new_rd_Cond(dbg, irg, block, irn);
1272
1273                         projHT = new_r_Proj(irg, block, irn, mode_X, pn_Cond_true);
1274                         mark_irn_visited(projHT);
1275                         exchange(projT, projHT);
1276
1277                         projHF = new_r_Proj(irg, block, irn, mode_X, pn_Cond_false);
1278                         mark_irn_visited(projHF);
1279
1280                         new_bl = new_r_Block(irg, 1, &projHF);
1281
1282                         dbg   = get_irn_dbg_info(cmp);
1283                         cmpL = new_rd_Cmp(dbg, irg, new_bl, lentry->low_word, rentry->low_word);
1284                         irn = new_r_Proj(irg, new_bl, cmpL, mode_b, pn_Cmp_Lg);
1285                         dbg = get_irn_dbg_info(node);
1286                         irn = new_rd_Cond(dbg, irg, new_bl, irn);
1287
1288                         proj = new_r_Proj(irg, new_bl, irn, mode_X, pn_Cond_true);
1289                         mark_irn_visited(proj);
1290                         add_block_cf_input(dst_blk, projHT, proj);
1291
1292                         proj = new_r_Proj(irg, new_bl, irn, mode_X, pn_Cond_false);
1293                         mark_irn_visited(proj);
1294                         exchange(projF, proj);
1295                 }
1296                 else {
1297                         /* a rel b <==> a_h rel b_h || (a_h == b_h && a_l rel b_l) */
1298                         ir_node *dstT, *dstF, *newbl_eq, *newbl_l;
1299                         pmap_entry *entry;
1300
1301                         entry = pmap_find(env->proj_2_block, projT);
1302                         assert(entry);
1303                         dstT = entry->value;
1304
1305                         entry = pmap_find(env->proj_2_block, projF);
1306                         assert(entry);
1307                         dstF = entry->value;
1308
1309                         irn = new_r_Proj(irg, block, cmpH, mode_b, pnc);
1310                         dbg = get_irn_dbg_info(node);
1311                         irn = new_rd_Cond(dbg, irg, block, irn);
1312
1313                         projHT = new_r_Proj(irg, block, irn, mode_X, pn_Cond_true);
1314                         mark_irn_visited(projHT);
1315                         exchange(projT, projHT);
1316                         projT = projHT;
1317
1318                         projHF = new_r_Proj(irg, block, irn, mode_X, pn_Cond_false);
1319                         mark_irn_visited(projHF);
1320
1321                         newbl_eq = new_r_Block(irg, 1, &projHF);
1322
1323                         irn = new_r_Proj(irg, newbl_eq, cmpH, mode_b, pn_Cmp_Eq);
1324                         irn = new_rd_Cond(dbg, irg, newbl_eq, irn);
1325
1326                         proj = new_r_Proj(irg, newbl_eq, irn, mode_X, pn_Cond_false);
1327                         mark_irn_visited(proj);
1328                         exchange(projF, proj);
1329                         projF = proj;
1330
1331                         proj = new_r_Proj(irg, newbl_eq, irn, mode_X, pn_Cond_true);
1332                         mark_irn_visited(proj);
1333
1334                         newbl_l = new_r_Block(irg, 1, &proj);
1335
1336                         dbg   = get_irn_dbg_info(cmp);
1337                         cmpL = new_rd_Cmp(dbg, irg, newbl_l, lentry->low_word, rentry->low_word);
1338                         irn = new_r_Proj(irg, newbl_l, cmpL, mode_b, pnc);
1339                         dbg = get_irn_dbg_info(node);
1340                         irn = new_rd_Cond(dbg, irg, newbl_l, irn);
1341
1342                         proj = new_r_Proj(irg, newbl_l, irn, mode_X, pn_Cond_true);
1343                         mark_irn_visited(proj);
1344                         add_block_cf_input(dstT, projT, proj);
1345
1346                         proj = new_r_Proj(irg, newbl_l, irn, mode_X, pn_Cond_false);
1347                         mark_irn_visited(proj);
1348                         add_block_cf_input(dstF, projF, proj);
1349                 }
1350
1351                 /* we have changed the control flow */
1352                 env->flags |= CF_CHANGED;
1353         }
1354         else {
1355                 idx = get_irn_idx(sel);
1356
1357                 if (env->entries[idx]) {
1358                         /*
1359                            Bad, a jump-table with double-word index.
1360                            This should not happen, but if it does we handle
1361                            it like a Conv were between (in other words, ignore
1362                            the high part.
1363                          */
1364
1365                         if (! env->entries[idx]->low_word) {
1366                                 /* not ready yet, wait */
1367                                 pdeq_putr(env->waitq, node);
1368                                 return;
1369                         }
1370                         set_Cond_selector(node, env->entries[idx]->low_word);
1371                 }
1372         }
1373 }
1374
1375 /**
1376  * Translate a Conv to higher_signed
1377  */
1378 static void lower_Conv_to_Ls(ir_node *node, lower_env_t *env) {
1379         ir_node  *op    = get_Conv_op(node);
1380         ir_mode  *imode = get_irn_mode(op);
1381         ir_mode  *dst_mode = env->params->low_signed;
1382         int      idx = get_irn_idx(node);
1383         ir_graph *irg = current_ir_graph;
1384         ir_node  *block = get_nodes_block(node);
1385         dbg_info *dbg = get_irn_dbg_info(node);
1386
1387         assert(idx < env->n_entries);
1388
1389         if (mode_is_int(imode) || mode_is_reference(imode)) {
1390                 /* simple case: create a high word */
1391                 if (imode != dst_mode)
1392                         op = new_rd_Conv(dbg, irg, block, op, dst_mode);
1393
1394                 env->entries[idx]->low_word  = op;
1395                 env->entries[idx]->high_word = new_rd_Shrs(dbg, irg, block, op,
1396                         new_Const_long(mode_Iu, get_mode_size_bits(dst_mode) - 1), dst_mode);
1397         }
1398         else {
1399                 ir_node *irn, *call;
1400                 ir_mode *omode = env->params->high_signed;
1401                 ir_type *mtp = get_conv_type(imode, omode, env);
1402
1403                 irn = get_intrinsic_address(mtp, get_irn_op(node), imode, omode, block, env);
1404                 call = new_rd_Call(dbg, irg, block, get_irg_no_mem(irg), irn, 1, &op, mtp);
1405                 set_irn_pinned(call, get_irn_pinned(node));
1406                 irn = new_r_Proj(irg, block, call, mode_T, pn_Call_T_result);
1407
1408                 env->entries[idx]->low_word  = new_r_Proj(irg, block, irn, dst_mode, 0);
1409                 env->entries[idx]->high_word = new_r_Proj(irg, block, irn, dst_mode, 1);
1410         }
1411 }
1412
1413 /**
1414  * Translate a Conv to higher_unsigned
1415  */
1416 static void lower_Conv_to_Lu(ir_node *node, lower_env_t *env) {
1417         ir_node  *op    = get_Conv_op(node);
1418         ir_mode  *imode  = get_irn_mode(op);
1419         ir_mode  *dst_mode = env->params->low_unsigned;
1420         int      idx = get_irn_idx(node);
1421         ir_graph *irg = current_ir_graph;
1422         ir_node  *block = get_nodes_block(node);
1423         dbg_info *dbg = get_irn_dbg_info(node);
1424
1425         assert(idx < env->n_entries);
1426
1427         if (mode_is_int(imode) || mode_is_reference(imode)) {
1428                 /* simple case: create a high word */
1429                 if (imode != dst_mode)
1430                         op = new_rd_Conv(dbg, irg, block, op, dst_mode);
1431
1432                 env->entries[idx]->low_word  = op;
1433                 env->entries[idx]->high_word = new_Const(dst_mode, get_mode_null(dst_mode));
1434         }
1435         else {
1436                 ir_node *irn, *call;
1437                 ir_mode *omode = env->params->high_unsigned;
1438                 ir_type *mtp = get_conv_type(imode, omode, env);
1439
1440                 irn = get_intrinsic_address(mtp, get_irn_op(node), imode, omode, block, env);
1441                 call = new_rd_Call(dbg, irg, block, get_irg_no_mem(irg), irn, 1, &op, mtp);
1442                 set_irn_pinned(call, get_irn_pinned(node));
1443                 irn = new_r_Proj(irg, block, call, mode_T, pn_Call_T_result);
1444
1445                 env->entries[idx]->low_word  = new_r_Proj(irg, block, irn, dst_mode, 0);
1446                 env->entries[idx]->high_word = new_r_Proj(irg, block, irn, dst_mode, 1);
1447         }
1448 }
1449
1450 /**
1451  * Translate a Conv from higher_signed
1452  */
1453 static void lower_Conv_from_Ls(ir_node *node, lower_env_t *env) {
1454         ir_node  *op    = get_Conv_op(node);
1455         ir_mode  *omode = get_irn_mode(node);
1456         ir_node  *block = get_nodes_block(node);
1457         dbg_info *dbg = get_irn_dbg_info(node);
1458         int      idx = get_irn_idx(op);
1459         ir_graph *irg = current_ir_graph;
1460
1461         assert(idx < env->n_entries);
1462
1463         if (mode_is_int(omode) || mode_is_reference(omode)) {
1464                 op = env->entries[idx]->low_word;
1465
1466                 /* simple case: create a high word */
1467                 if (omode != env->params->low_signed)
1468                         op = new_rd_Conv(dbg, irg, block, op, omode);
1469
1470                 set_Conv_op(node, op);
1471         }
1472         else {
1473                 ir_node *irn, *call, *in[2];
1474                 ir_mode *imode = env->params->high_signed;
1475                 ir_type *mtp = get_conv_type(imode, omode, env);
1476
1477                 irn = get_intrinsic_address(mtp, get_irn_op(node), imode, omode, block, env);
1478                 in[0] = env->entries[idx]->low_word;
1479                 in[1] = env->entries[idx]->high_word;
1480
1481                 call = new_rd_Call(dbg, irg, block, get_irg_no_mem(irg), irn, 2, in, mtp);
1482                 set_irn_pinned(call, get_irn_pinned(node));
1483                 irn = new_r_Proj(irg, block, call, mode_T, pn_Call_T_result);
1484
1485                 exchange(node, new_r_Proj(irg, block, irn, omode, 0));
1486         }
1487 }
1488
1489 /**
1490  * Translate a Conv from higher_unsigned
1491  */
1492 static void lower_Conv_from_Lu(ir_node *node, lower_env_t *env) {
1493         ir_node  *op    = get_Conv_op(node);
1494         ir_mode  *omode = get_irn_mode(node);
1495         ir_node  *block = get_nodes_block(node);
1496         dbg_info *dbg = get_irn_dbg_info(node);
1497         int      idx = get_irn_idx(op);
1498         ir_graph *irg = current_ir_graph;
1499
1500         assert(idx < env->n_entries);
1501
1502         if (mode_is_int(omode) || mode_is_reference(omode)) {
1503                 op = env->entries[idx]->low_word;
1504
1505                 /* simple case: create a high word */
1506                 if (omode != env->params->low_unsigned)
1507                         op = new_rd_Conv(dbg, irg, block, op, omode);
1508
1509                 set_Conv_op(node, op);
1510         }
1511         else {
1512                 ir_node *irn, *call, *in[2];
1513                 ir_mode *imode = env->params->high_unsigned;
1514                 ir_type *mtp = get_conv_type(imode, omode, env);
1515
1516                 irn = get_intrinsic_address(mtp, get_irn_op(node), imode, omode, block, env);
1517                 in[0] = env->entries[idx]->low_word;
1518                 in[1] = env->entries[idx]->high_word;
1519
1520                 call = new_rd_Call(dbg, irg, block, get_irg_no_mem(irg), irn, 2, in, mtp);
1521                 set_irn_pinned(call, get_irn_pinned(node));
1522                 irn = new_r_Proj(irg, block, call, mode_T, pn_Call_T_result);
1523
1524                 exchange(node, new_r_Proj(irg, block, irn, omode, 0));
1525         }
1526 }
1527
1528 /**
1529  * Translate a Conv.
1530  */
1531 static void lower_Conv(ir_node *node, ir_mode *mode, lower_env_t *env) {
1532         mode = get_irn_mode(node);
1533
1534         if (mode == env->params->high_signed)
1535                 lower_Conv_to_Ls(node, env);
1536         else if (mode == env->params->high_unsigned)
1537                 lower_Conv_to_Lu(node, env);
1538         else {
1539                 ir_mode *mode = get_irn_mode(get_Conv_op(node));
1540
1541                 if (mode == env->params->high_signed)
1542                         lower_Conv_from_Ls(node, env);
1543                 else {
1544                         assert(mode == env->params->high_unsigned);
1545                         lower_Conv_from_Lu(node, env);
1546                 }
1547         }
1548 }
1549
1550 /**
1551  * Lower the method type.
1552  */
1553 static ir_type *lower_mtp(ir_type *mtp, lower_env_t *env) {
1554         pmap_entry *entry;
1555         ident      *id;
1556         ir_type    *res;
1557
1558         if (is_lowered_type(mtp))
1559                 return mtp;
1560
1561         entry = pmap_find(lowered_type, mtp);
1562         if (! entry) {
1563                 int i, n, r, n_param, n_res;
1564
1565                 /* count new number of params */
1566                 n_param = n = get_method_n_params(mtp);
1567                 for (i = n_param - 1; i >= 0; --i) {
1568                         ir_type *tp = get_method_param_type(mtp, i);
1569
1570                         if (is_Primitive_type(tp)) {
1571                                 ir_mode *mode = get_type_mode(tp);
1572
1573                                 if (mode == env->params->high_signed ||
1574                                         mode == env->params->high_unsigned)
1575                                         ++n_param;
1576                         }
1577                 }
1578
1579                 /* count new number of results */
1580                 n_res = r = get_method_n_ress(mtp);
1581                 for (i = n_res - 1; i >= 0; --i) {
1582                         ir_type *tp = get_method_res_type(mtp, i);
1583
1584                         if (is_Primitive_type(tp)) {
1585                                 ir_mode *mode = get_type_mode(tp);
1586
1587                                 if (mode == env->params->high_signed ||
1588                                         mode == env->params->high_unsigned)
1589                                         ++n_res;
1590                         }
1591                 }
1592
1593                 id = mangle_u(new_id_from_chars("L", 1), get_type_ident(mtp));
1594                 res = new_type_method(id, n_param, n_res);
1595
1596                 /* set param types and result types */
1597                 for (i = n_param = 0; i < n; ++i) {
1598                         ir_type *tp = get_method_param_type(mtp, i);
1599
1600                         if (is_Primitive_type(tp)) {
1601                                 ir_mode *mode = get_type_mode(tp);
1602
1603                                 if (mode == env->params->high_signed) {
1604                                         set_method_param_type(res, n_param++, tp_s);
1605                                         set_method_param_type(res, n_param++, tp_s);
1606                                 }
1607                                 else if (mode == env->params->high_unsigned) {
1608                                         set_method_param_type(res, n_param++, tp_u);
1609                                         set_method_param_type(res, n_param++, tp_u);
1610                                 }
1611                                 else
1612                                         set_method_param_type(res, n_param++, tp);
1613                         }
1614                         else
1615                                 set_method_param_type(res, n_param++, tp);
1616                 }
1617                 for (i = n_res = 0; i < r; ++i) {
1618                         ir_type *tp = get_method_res_type(mtp, i);
1619
1620                         if (is_Primitive_type(tp)) {
1621                                 ir_mode *mode = get_type_mode(tp);
1622
1623                                 if (mode == env->params->high_signed) {
1624                                         set_method_res_type(res, n_res++, tp_s);
1625                                         set_method_res_type(res, n_res++, tp_s);
1626                                 }
1627                                 else if (mode == env->params->high_unsigned) {
1628                                         set_method_res_type(res, n_res++, tp_u);
1629                                         set_method_res_type(res, n_res++, tp_u);
1630                                 }
1631                                 else
1632                                         set_method_res_type(res, n_res++, tp);
1633                         }
1634                         else
1635                                 set_method_res_type(res, n_res++, tp);
1636                 }
1637                 set_lowered_type(mtp, res);
1638                 pmap_insert(lowered_type, mtp, res);
1639         }
1640         else
1641                 res = entry->value;
1642         return res;
1643 }
1644
1645 /**
1646  * Translate a Return.
1647  */
1648 static void lower_Return(ir_node *node, ir_mode *mode, lower_env_t *env) {
1649         ir_graph *irg = current_ir_graph;
1650         entity   *ent = get_irg_entity(irg);
1651         ir_type  *mtp = get_entity_type(ent);
1652         ir_node  **in;
1653         int      i, j, n, idx;
1654         int      need_conv = 0;
1655
1656         /* check if this return must be lowered */
1657         for (i = 0, n = get_Return_n_ress(node); i < n; ++i) {
1658                 ir_node *pred = get_Return_res(node, i);
1659                 ir_mode *mode = get_irn_op_mode(pred);
1660
1661                 if (mode == env->params->high_signed ||
1662                         mode == env->params->high_unsigned) {
1663                         idx = get_irn_idx(pred);
1664                         if (! env->entries[idx]->low_word) {
1665                                 /* not ready yet, wait */
1666                                 pdeq_putr(env->waitq, node);
1667                                 return;
1668                         }
1669                         need_conv = 1;
1670                 }
1671         }
1672         if (! need_conv)
1673                 return;
1674
1675         ent = get_irg_entity(irg);
1676         mtp = get_entity_type(ent);
1677
1678         mtp = lower_mtp(mtp, env);
1679         set_entity_type(ent, mtp);
1680
1681         /* create a new in array */
1682         NEW_ARR_A(ir_node *, in, get_method_n_ress(mtp) + 1);
1683         in[0] = get_Return_mem(node);
1684
1685         for (j = i = 0, n = get_Return_n_ress(node); i < n; ++i) {
1686                 ir_node *pred = get_Return_res(node, i);
1687
1688                 idx = get_irn_idx(pred);
1689                 assert(idx < env->n_entries);
1690
1691                 if (env->entries[idx]) {
1692                         in[++j] = env->entries[idx]->low_word;
1693                         in[++j] = env->entries[idx]->high_word;
1694                 }
1695                 else
1696                         in[++j] = pred;
1697         }
1698
1699         set_irn_in(node, j+1, in);
1700 }
1701
1702 /**
1703  * Translate the parameters.
1704  */
1705 static void lower_Start(ir_node *node, ir_mode *mode, lower_env_t *env) {
1706         ir_graph *irg = current_ir_graph;
1707         entity   *ent = get_irg_entity(irg);
1708         ir_type  *tp  = get_entity_type(ent);
1709         ir_type  *mtp;
1710         long     *new_projs;
1711         int      i, j, n_params, rem;
1712         ir_node  *proj, *args;
1713
1714         if (is_lowered_type(tp))
1715                 mtp = get_associated_type(tp);
1716         else
1717                 mtp = tp;
1718
1719         assert(! is_lowered_type(mtp));
1720
1721         n_params = get_method_n_params(mtp);
1722         if (n_params <= 0)
1723                 return;
1724
1725         NEW_ARR_A(long, new_projs, n_params);
1726
1727         /* first check if we have parameters that must be fixed */
1728         for (i = j = 0; i < n_params; ++i, ++j) {
1729                 ir_type *tp = get_method_param_type(mtp, i);
1730
1731                 new_projs[i] = j;
1732                 if (is_Primitive_type(tp)) {
1733                         ir_mode *mode = get_type_mode(tp);
1734
1735                         if (mode == env->params->high_signed ||
1736                                 mode == env->params->high_unsigned)
1737                                 ++j;
1738                 }
1739         }
1740         if (i == j)
1741                 return;
1742
1743         mtp = lower_mtp(mtp, env);
1744         set_entity_type(ent, mtp);
1745
1746         /* switch off optimization for new Proj nodes or they might be CSE'ed
1747            with not patched one's */
1748         rem = get_optimize();
1749         set_optimize(0);
1750
1751         /* ok, fix all Proj's and create new ones */
1752         args = get_irg_args(irg);
1753         for (proj = get_irn_link(node); proj; proj = get_irn_link(proj)) {
1754                 ir_node *pred = get_Proj_pred(proj);
1755                 long proj_nr;
1756                 int idx;
1757                 ir_mode *mode;
1758                 dbg_info *dbg;
1759
1760                 /* do not visit this node again */
1761                 mark_irn_visited(proj);
1762
1763                 if (pred != args)
1764                         continue;
1765
1766                 proj_nr = get_Proj_proj(proj);
1767                 set_Proj_proj(proj, new_projs[proj_nr]);
1768
1769                 idx = get_irn_idx(proj);
1770                 if (env->entries[idx]) {
1771                         mode = get_irn_mode(proj);
1772
1773                         if (mode == env->params->high_signed)
1774                                 mode = env->params->low_signed;
1775                         else
1776                                 mode = env->params->low_unsigned;
1777
1778                         dbg = get_irn_dbg_info(proj);
1779                         env->entries[idx]->low_word  =
1780                                 new_rd_Proj(dbg, irg, get_nodes_block(proj), args, mode, new_projs[proj_nr]);
1781                         env->entries[idx]->high_word =
1782                                 new_rd_Proj(dbg, irg, get_nodes_block(proj), args, mode, new_projs[proj_nr] + 1);
1783                 }
1784         }
1785         set_optimize(rem);
1786 }
1787
1788 /**
1789  * Translate a Call.
1790  */
1791 static void lower_Call(ir_node *node, ir_mode *mode, lower_env_t *env) {
1792         ir_graph *irg = current_ir_graph;
1793         ir_type  *tp = get_Call_type(node);
1794         ir_type  *call_tp;
1795         ir_node  **in, *proj, *results;
1796         int      n_params, n_res, need_lower = 0;
1797         int      i, j;
1798         long     *res_numbers = NULL;
1799
1800         if (is_lowered_type(tp))
1801                 call_tp = get_associated_type(tp);
1802         else
1803                 call_tp = tp;
1804
1805         assert(! is_lowered_type(call_tp));
1806
1807         n_params = get_method_n_params(call_tp);
1808         for (i = 0; i < n_params; ++i) {
1809                 ir_type *tp = get_method_param_type(call_tp, i);
1810
1811                 if (is_Primitive_type(tp)) {
1812                         ir_mode *mode = get_type_mode(tp);
1813
1814                         if (mode == env->params->high_signed ||
1815                                 mode == env->params->high_unsigned) {
1816                                 need_lower = 1;
1817                                 break;
1818                         }
1819                 }
1820         }
1821         n_res = get_method_n_ress(call_tp);
1822         if (n_res > 0) {
1823                 NEW_ARR_A(long, res_numbers, n_res);
1824
1825                 for (i = j = 0; i < n_res; ++i, ++j) {
1826                         ir_type *tp = get_method_res_type(call_tp, i);
1827
1828                         res_numbers[i] = j;
1829                         if (is_Primitive_type(tp)) {
1830                                 ir_mode *mode = get_type_mode(tp);
1831
1832                                 if (mode == env->params->high_signed ||
1833                                         mode == env->params->high_unsigned) {
1834                                         need_lower = 1;
1835                                         ++j;
1836                                 }
1837                         }
1838                 }
1839         }
1840
1841         if (! need_lower)
1842                 return;
1843
1844         /* let's lower it */
1845         call_tp = lower_mtp(call_tp, env);
1846         set_Call_type(node, call_tp);
1847
1848         NEW_ARR_A(ir_node *, in, get_method_n_params(call_tp) + 2);
1849
1850         in[0] = get_Call_mem(node);
1851         in[1] = get_Call_ptr(node);
1852
1853         for (j = 2, i = 0; i < n_params; ++i) {
1854                 ir_node *pred = get_Call_param(node, i);
1855                 int     idx = get_irn_idx(pred);
1856
1857                 if (env->entries[idx]) {
1858                         if (! env->entries[idx]->low_word) {
1859                                 /* not ready yet, wait */
1860                                 pdeq_putr(env->waitq, node);
1861                                 return;
1862                         }
1863                         in[j++] = env->entries[idx]->low_word;
1864                         in[j++] = env->entries[idx]->high_word;
1865                 }
1866                 else
1867                         in[j++] = pred;
1868         }
1869
1870         set_irn_in(node, j, in);
1871
1872         /* fix the results */
1873         results = NULL;
1874         for (proj = get_irn_link(node); proj; proj = get_irn_link(proj)) {
1875                 long proj_nr = get_Proj_proj(proj);
1876
1877                 if (proj_nr == pn_Call_T_result && get_Proj_pred(proj) == node) {
1878                         /* found the result proj */
1879                         results = proj;
1880                         break;
1881                 }
1882         }
1883
1884         if (results) {          /* there are results */
1885                 int rem = get_optimize();
1886
1887                 /* switch off optimization for new Proj nodes or they might be CSE'ed
1888                    with not patched one's */
1889                 set_optimize(0);
1890                 for (i = j = 0, proj = get_irn_link(results); proj; proj = get_irn_link(proj), ++i, ++j) {
1891                         if (get_Proj_pred(proj) == results) {
1892                                 long proj_nr = get_Proj_proj(proj);
1893                                 int idx;
1894
1895                                 /* found a result */
1896                                 set_Proj_proj(proj, res_numbers[proj_nr]);
1897                                 idx = get_irn_idx(proj);
1898                                 if (env->entries[idx]) {
1899                                         ir_mode *mode = get_irn_mode(proj);
1900                                         dbg_info *dbg;
1901
1902                                         if (mode == env->params->high_signed)
1903                                                 mode = env->params->low_signed;
1904                                         else
1905                                                 mode = env->params->low_unsigned;
1906
1907                                         dbg = get_irn_dbg_info(proj);
1908                                         env->entries[idx]->low_word  =
1909                                                 new_rd_Proj(dbg, irg, get_nodes_block(proj), results, mode, res_numbers[proj_nr]);
1910                                         env->entries[idx]->high_word =
1911                                                 new_rd_Proj(dbg, irg, get_nodes_block(proj), results, mode, res_numbers[proj_nr] + 1);
1912                                 }
1913                                 mark_irn_visited(proj);
1914                         }
1915                 }
1916                 set_optimize(rem);
1917         }
1918 }
1919
1920 /**
1921  * Translate an Unknown into two.
1922  */
1923 static void lower_Unknown(ir_node *node, ir_mode *mode, lower_env_t *env) {
1924         int idx = get_irn_idx(node);
1925
1926         env->entries[idx]->low_word  =
1927         env->entries[idx]->high_word = new_r_Unknown(current_ir_graph, mode);
1928 }
1929
1930 /**
1931  * Translate a Phi.
1932  *
1933  * First step: just create two templates
1934  */
1935 static void lower_Phi(ir_node *phi, ir_mode *mode, lower_env_t *env) {
1936         ir_node  *block, *unk;
1937         ir_node  **inl, **inh;
1938         dbg_info *dbg;
1939         int      idx, i, arity = get_Phi_n_preds(phi);
1940         int      enq = 0;
1941
1942         idx = get_irn_idx(phi);
1943         if (env->entries[idx]->low_word) {
1944                 /* Phi nodes already build, check for inputs */
1945                 ir_node *phil = env->entries[idx]->low_word;
1946                 ir_node *phih = env->entries[idx]->high_word;
1947
1948                 for (i = 0; i < arity; ++i) {
1949                         ir_node *pred = get_Phi_pred(phi, i);
1950                         int     idx = get_irn_idx(pred);
1951
1952                         if (env->entries[idx]->low_word) {
1953                                 set_Phi_pred(phil, i, env->entries[idx]->low_word);
1954                                 set_Phi_pred(phih, i, env->entries[idx]->high_word);
1955                         }
1956                         else {
1957                                 /* still not ready */
1958                                 pdeq_putr(env->waitq, phi);
1959                                 return;
1960                         }
1961                 }
1962         }
1963
1964         /* first create a new in array */
1965         NEW_ARR_A(ir_node *, inl, arity);
1966         NEW_ARR_A(ir_node *, inh, arity);
1967         unk = new_r_Unknown(current_ir_graph, mode);
1968
1969         for (i = 0; i < arity; ++i) {
1970                 ir_node *pred = get_Phi_pred(phi, i);
1971                 int     idx = get_irn_idx(pred);
1972
1973                 if (env->entries[idx]->low_word) {
1974                         inl[i] = env->entries[idx]->low_word;
1975                         inh[i] = env->entries[idx]->high_word;
1976                 }
1977                 else {
1978                         inl[i] = unk;
1979                         inh[i] = unk;
1980                         enq = 1;
1981                 }
1982         }
1983
1984         dbg = get_irn_dbg_info(phi);
1985         block = get_nodes_block(phi);
1986
1987         idx = get_irn_idx(phi);
1988         assert(idx < env->n_entries);
1989         env->entries[idx]->low_word  = new_rd_Phi(dbg, current_ir_graph, block, arity, inl, mode);
1990         env->entries[idx]->high_word = new_rd_Phi(dbg, current_ir_graph, block, arity, inh, mode);
1991
1992         if (enq) {
1993                 /* not yet finished */
1994                 pdeq_putr(env->waitq, phi);
1995         }
1996 }
1997
1998 /**
1999  * check for opcodes that must always be lowered.
2000  */
2001 static int always_lower(opcode code) {
2002         switch (code) {
2003         case iro_Start:
2004         case iro_Call:
2005         case iro_Return:
2006         case iro_Cond:
2007                 return 1;
2008         default:
2009                 return 0;
2010         }
2011 }
2012
2013 /** The type of a lower function. */
2014 typedef void (*lower_func)(ir_node *node, ir_mode *mode, lower_env_t *env);
2015
2016 /**
2017  * lower a node.
2018  */
2019 static void lower_ops(ir_node *node, void *env)
2020 {
2021         lower_env_t  *lenv = env;
2022         node_entry_t *entry;
2023         int          idx = get_irn_idx(node);
2024
2025         entry = lenv->entries[idx];
2026         if (entry || always_lower(get_irn_opcode(node))) {
2027                 ir_op      *op = get_irn_op(node);
2028                 lower_func func = (lower_func)op->ops.generic;
2029
2030                 if (func) {
2031                         ir_mode *mode = get_irn_op_mode(node);
2032
2033                         if (mode == lenv->params->high_signed)
2034                                 mode = lenv->params->low_signed;
2035                         else
2036                                 mode = lenv->params->low_unsigned;
2037
2038                         DB((dbg, LEVEL_1, "  %+F\n", node));
2039                         func(node, mode, lenv);
2040                 }
2041         }
2042 }
2043
2044 #define IDENT(s)  new_id_from_chars(s, sizeof(s)-1)
2045
2046 /**
2047  * Compare two op_mode_entry_t's.
2048  */
2049 static int cmp_op_mode(const void *elt, const void *key, size_t size) {
2050         const op_mode_entry_t *e1 = elt;
2051         const op_mode_entry_t *e2 = key;
2052
2053         return (e1->op - e2->op) | (e1->imode - e2->imode) | (e1->omode - e2->omode);
2054 }
2055
2056 /**
2057  * Compare two conv_tp_entry_t's.
2058  */
2059 static int cmp_conv_tp(const void *elt, const void *key, size_t size) {
2060         const conv_tp_entry_t *e1 = elt;
2061         const conv_tp_entry_t *e2 = key;
2062
2063         return (e1->imode - e2->imode) | (e1->omode - e2->omode);
2064 }
2065
2066 /*
2067  * Do the lowering.
2068  */
2069 void lower_dw_ops(const lwrdw_param_t *param)
2070 {
2071         lower_env_t lenv;
2072         int i;
2073
2074         if (! param)
2075                 return;
2076
2077         if (! param->enable)
2078                 return;
2079
2080         FIRM_DBG_REGISTER(dbg, "firm.lower.dw");
2081
2082         assert(2 * get_mode_size_bits(param->low_signed)   == get_mode_size_bits(param->high_signed));
2083         assert(2 * get_mode_size_bits(param->low_unsigned) == get_mode_size_bits(param->high_unsigned));
2084         assert(get_mode_size_bits(param->low_signed) == get_mode_size_bits(param->low_unsigned));
2085
2086         if (! prim_types)
2087                 prim_types = pmap_create();
2088         if (! intrinsic_fkt)
2089                 intrinsic_fkt = new_set(cmp_op_mode, iro_MaxOpcode);
2090         if (! conv_types)
2091                 conv_types = new_set(cmp_conv_tp, 16);
2092         if (! lowered_type)
2093                 lowered_type = pmap_create();
2094
2095         if (! tp_u)
2096                 tp_u = get_primitive_type(param->low_unsigned);
2097         if (! tp_s)
2098                 tp_s = get_primitive_type(param->low_signed);
2099
2100
2101         if (! binop_tp_u) {
2102                 binop_tp_u = new_type_method(IDENT("binop_u_intrinsic"), 4, 2);
2103                 set_method_param_type(binop_tp_u, 0, tp_u);
2104                 set_method_param_type(binop_tp_u, 1, tp_u);
2105                 set_method_param_type(binop_tp_u, 2, tp_u);
2106                 set_method_param_type(binop_tp_u, 3, tp_u);
2107                 set_method_res_type(binop_tp_u, 0, tp_u);
2108                 set_method_res_type(binop_tp_u, 1, tp_u);
2109         }
2110         if (! binop_tp_s) {
2111                 binop_tp_s = new_type_method(IDENT("binop_s_intrinsic"), 4, 2);
2112                 set_method_param_type(binop_tp_s, 0, tp_s);
2113                 set_method_param_type(binop_tp_s, 1, tp_s);
2114                 set_method_param_type(binop_tp_s, 2, tp_s);
2115                 set_method_param_type(binop_tp_s, 3, tp_s);
2116                 set_method_res_type(binop_tp_s, 0, tp_s);
2117                 set_method_res_type(binop_tp_s, 1, tp_s);
2118         }
2119         if (! shiftop_tp_u) {
2120                 shiftop_tp_u = new_type_method(IDENT("shiftop_u_intrinsic"), 3, 2);
2121                 set_method_param_type(shiftop_tp_u, 0, tp_u);
2122                 set_method_param_type(shiftop_tp_u, 1, tp_u);
2123                 set_method_param_type(shiftop_tp_u, 2, tp_u);
2124                 set_method_res_type(shiftop_tp_u, 0, tp_u);
2125                 set_method_res_type(shiftop_tp_u, 1, tp_u);
2126         }
2127         if (! shiftop_tp_s) {
2128                 shiftop_tp_s = new_type_method(IDENT("shiftop_s_intrinsic"), 3, 2);
2129                 set_method_param_type(shiftop_tp_s, 0, tp_s);
2130                 set_method_param_type(shiftop_tp_s, 1, tp_s);
2131                 /* beware: shift count is always mode_Iu */
2132                 set_method_param_type(shiftop_tp_s, 2, tp_u);
2133                 set_method_res_type(shiftop_tp_s, 0, tp_s);
2134                 set_method_res_type(shiftop_tp_s, 1, tp_s);
2135         }
2136         if (! unop_tp_u) {
2137                 unop_tp_u = new_type_method(IDENT("unop_u_intrinsic"), 2, 2);
2138                 set_method_param_type(unop_tp_u, 0, tp_u);
2139                 set_method_param_type(unop_tp_u, 1, tp_u);
2140                 set_method_res_type(unop_tp_u, 0, tp_u);
2141                 set_method_res_type(unop_tp_u, 1, tp_u);
2142         }
2143         if (! unop_tp_s) {
2144                 unop_tp_s = new_type_method(IDENT("unop_s_intrinsic"), 2, 2);
2145                 set_method_param_type(unop_tp_s, 0, tp_s);
2146                 set_method_param_type(unop_tp_s, 1, tp_s);
2147                 set_method_res_type(unop_tp_s, 0, tp_s);
2148                 set_method_res_type(unop_tp_s, 1, tp_s);
2149         }
2150
2151         lenv.tv_mode_bytes = new_tarval_from_long(get_mode_size_bytes(param->low_unsigned), mode_Iu);
2152         lenv.tv_mode_bits  = new_tarval_from_long(get_mode_size_bits(param->low_unsigned), mode_Iu);
2153         lenv.waitq         = new_pdeq();
2154         lenv.params        = param;
2155
2156         /* first clear the generic function pointer for all ops */
2157         clear_irp_opcodes_generic_func();
2158
2159 #define LOWER2(op, fkt)   op_##op->ops.generic = (op_func)fkt
2160 #define LOWER(op)         LOWER2(op, lower_##op)
2161 #define LOWER_BIN(op)     LOWER2(op, lower_Binop)
2162 #define LOWER_UN(op)      LOWER2(op, lower_Unop)
2163
2164         LOWER(Load);
2165         LOWER(Store);
2166         LOWER(Const);
2167         LOWER(And);
2168         LOWER(Or);
2169         LOWER(Eor);
2170         LOWER(Not);
2171         LOWER(Cond);
2172         LOWER(Return);
2173         LOWER(Call);
2174         LOWER(Unknown);
2175         LOWER(Phi);
2176         LOWER(Start);
2177
2178         LOWER_BIN(Add);
2179         LOWER_BIN(Sub);
2180         LOWER_BIN(Mul);
2181         LOWER(Shl);
2182         LOWER(Shr);
2183         LOWER(Shrs);
2184         LOWER(Rot);
2185         LOWER_UN(Minus);
2186         LOWER(DivMod);
2187         LOWER(Div);
2188         LOWER(Mod);
2189         LOWER_UN(Abs);
2190
2191         LOWER(Conv);
2192
2193 #undef LOWER_UN
2194 #undef LOWER_BIN
2195 #undef LOWER
2196 #undef LOWER2
2197
2198         /* transform all graphs */
2199         for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
2200                 ir_graph *irg = get_irp_irg(i);
2201                 int n_idx;
2202
2203                 obstack_init(&lenv.obst);
2204
2205                 n_idx = get_irg_last_idx(irg);
2206                 lenv.n_entries = n_idx;
2207                 lenv.entries   = xmalloc(n_idx * sizeof(lenv.entries[0]));
2208                 memset(lenv.entries, 0, n_idx * sizeof(lenv.entries[0]));
2209
2210                 /* first step: link all nodes and allocate data */
2211                 lenv.flags = 0;
2212                 lenv.proj_2_block = pmap_create();
2213                 irg_walk_graph(irg, firm_clear_link, prepare_links, &lenv);
2214
2215                 if (lenv.flags & MUST_BE_LOWERED) {
2216                         DB((dbg, LEVEL_1, "Lowering graph %+F\n", irg));
2217
2218                         /* must do some work */
2219                         irg_walk_graph(irg, NULL, lower_ops, &lenv);
2220
2221                         /* last step: all waiting nodes */
2222                         DB((dbg, LEVEL_1, "finishing waiting nodes:\n"));
2223                         while (! pdeq_empty(lenv.waitq)) {
2224                                 ir_node *node = pdeq_getl(lenv.waitq);
2225
2226                                 lower_ops(node, &lenv);
2227                         }
2228
2229                         /* outs are invalid, we changed the graph */
2230                         set_irg_outs_inconsistent(irg);
2231
2232                         if (lenv.flags & CF_CHANGED) {
2233                                 /* control flow changed, dominance info is invalid */
2234                                 set_irg_doms_inconsistent(irg);
2235                                 set_irg_extblk_inconsistent(irg);
2236                                 set_irg_loopinfo_inconsistent(irg);
2237                         }
2238
2239                         dump_ir_block_graph(irg, "-dw");
2240                 }
2241                 pmap_destroy(lenv.proj_2_block);
2242                 free(lenv.entries);
2243                 obstack_free(&lenv.obst, NULL);
2244         }
2245         del_pdeq(lenv.waitq);
2246 }
2247
2248 /* Default implementation. */
2249 entity *def_create_intrinsic_fkt(ir_type *method, const ir_op *op,
2250                                  const ir_mode *imode, const ir_mode *omode,
2251                                  void *context)
2252 {
2253         char buf[64];
2254         ident *id;
2255         entity *ent;
2256
2257         if (imode == omode)
2258                 snprintf(buf, sizeof(buf), "__l%s%s", get_op_name(op), get_mode_name(imode));
2259         else
2260                 snprintf(buf, sizeof(buf), "__l%s%s%s", get_op_name(op),
2261                         get_mode_name(imode), get_mode_name(omode));
2262         id = new_id_from_str(buf);
2263
2264         ent = new_entity(get_glob_type(), id, method);
2265         set_entity_ld_ident(ent, get_entity_ident(ent));
2266         set_entity_visibility(ent, visibility_external_allocated);
2267         return ent;
2268 }