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(env->params->low_signed)) {
 910                         ir_node *block = get_nodes_block(node);
 911                         ir_node *left = get_Shr_left(node);
 912                         int idx = get_irn_idx(left);
 913
 914                         left = env->entries[idx]->high_word;
 915                         idx = get_irn_idx(node);
 916
 917                         env->entries[idx]->low_word  = left;
 918                         env->entries[idx]->high_word = new_r_Const(current_ir_graph, block, mode, get_mode_null(mode));
 919
 920                         return;
 921                 }
 922         }
 923         lower_Shiftop(node, mode, env);
 924 }
 925
 926 /**
 927  * Translate a Shl and handle special cases.
 928  */
 929 static void lower_Shl(ir_node *node, ir_mode *mode, lower_env_t *env) {
 930         ir_node *right = get_Shl_right(node);
 931
 932         if (get_mode_arithmetic(mode) == irma_twos_complement && is_Const(right)) {
 933                 tarval *tv = get_Const_tarval(right);
 934
 935                 if (tarval_is_long(tv) &&
 936                         get_tarval_long(tv) == get_mode_size_bits(env->params->low_signed)) {
 937                         ir_node *block = get_nodes_block(node);
 938                         ir_node *left = get_Shl_left(node);
 939                         int idx = get_irn_idx(left);
 940
 941                         left = env->entries[idx]->low_word;
 942                         idx = get_irn_idx(node);
 943
 944                         env->entries[idx]->low_word  = new_r_Const(current_ir_graph, block, mode, get_mode_null(mode));
 945                         env->entries[idx]->high_word = left;
 946
 947                         return;
 948                 }
 949         }
 950         lower_Shiftop(node, mode, env);
 951 }
 952
 953 /**
 954  * Translate a Shrs and handle special cases.
 955  */
 956 static void lower_Shrs(ir_node *node, ir_mode *mode, lower_env_t *env) {
 957         ir_node *right = get_Shrs_right(node);
 958
 959         if (get_mode_arithmetic(mode) == irma_twos_complement && is_Const(right)) {
 960                 tarval *tv = get_Const_tarval(right);
 961
 962                 if (tarval_is_long(tv) &&
 963                         get_tarval_long(tv) == get_mode_size_bits(env->params->low_signed)) {
 964                         ir_node *block = get_nodes_block(node);
 965                         ir_node *left = get_Shrs_left(node);
 966                         ir_node *c;
 967                         int idx = get_irn_idx(left);
 968
 969                         left = env->entries[idx]->high_word;
 970                         idx = get_irn_idx(node);
 971
 972                         c = new_r_Const_long(current_ir_graph, block, mode_Iu, get_mode_size_bits(mode) - 1);
 973                         env->entries[idx]->low_word  = left;
 974                         env->entries[idx]->high_word = new_r_Shrs(current_ir_graph, block, left, c, mode);
 975
 976                         return;
 977                 }
 978         }
 979         lower_Shiftop(node, mode, env);
 980 }
 981
 982 /**
 983  * Translate a Rot and handle special cases.
 984  */
 985 static void lower_Rot(ir_node *node, ir_mode *mode, lower_env_t *env) {
 986         ir_node *right = get_Rot_right(node);
 987
 988         if (get_mode_arithmetic(mode) == irma_twos_complement && is_Const(right)) {
 989                 tarval *tv = get_Const_tarval(right);
 990
 991                 if (tarval_is_long(tv) &&
 992                         get_tarval_long(tv) == get_mode_size_bits(env->params->low_signed)) {
 993                         ir_node *block = get_nodes_block(node);
 994                         ir_node *left = get_Rot_left(node);
 995                         ir_node *h, *l;
 996                         int idx = get_irn_idx(left);
 997
 998                         l = env->entries[idx]->low_word;
 999                         h = env->entries[idx]->high_word;
1000                         idx = get_irn_idx(node);
1001
1002                         env->entries[idx]->low_word  = h;
1003                         env->entries[idx]->high_word = l;
1004
1005                         return;
1006                 }
1007         }
1008         lower_Shiftop(node, mode, env);
1009 }
1010 /**
1011  * Translate an Unop.
1012  *
1013  * Create an intrinsic Call.
1014  */
1015 static void lower_Unop(ir_node *node, ir_mode *mode, lower_env_t *env) {
1016         ir_node  *block, *irn;
1017         ir_node  *in[2];
1018         dbg_info *dbg;
1019         ir_type  *mtp;
1020         int      idx;
1021         node_entry_t *entry;
1022
1023         irn   = get_unop_op(node);
1024         entry = env->entries[get_irn_idx(irn)];
1025         assert(entry);
1026
1027         if (! entry->low_word) {
1028                 /* not ready yet, wait */
1029                 pdeq_putr(env->waitq, node);
1030                 return;
1031         }
1032
1033         in[0] = entry->low_word;
1034         in[1] = entry->high_word;
1035
1036         dbg = get_irn_dbg_info(node);
1037         block = get_nodes_block(node);
1038
1039         mtp = mode_is_signed(mode) ? unop_tp_s : unop_tp_u;
1040         irn = get_intrinsic_address(mtp, get_irn_op(node), mode, mode, block, env);
1041         irn = new_rd_Call(dbg, current_ir_graph, block, get_irg_no_mem(current_ir_graph),
1042                 irn, 2, in, mtp);
1043         set_irn_pinned(irn, get_irn_pinned(node));
1044         irn = new_r_Proj(current_ir_graph, block, irn, mode_T, pn_Call_T_result);
1045
1046         idx = get_irn_idx(node);
1047         assert(idx < env->n_entries);
1048         env->entries[idx]->low_word  = new_r_Proj(current_ir_graph, block, irn, mode, 0);
1049         env->entries[idx]->high_word = new_r_Proj(current_ir_graph, block, irn, mode, 1);
1050 }
1051
1052 /**
1053  * Translate a logical Binop.
1054  *
1055  * Create two logical Binops.
1056  */
1057 static void lower_Binop_logical(ir_node *node, ir_mode *mode, lower_env_t *env,
1058                                                                 ir_node *(*constr_rd)(dbg_info *db, ir_graph *irg, ir_node *block, ir_node *op1, ir_node *op2, ir_mode *mode) ) {
1059         ir_node  *block, *irn;
1060         ir_node  *lop_l, *lop_h, *rop_l, *rop_h;
1061         dbg_info *dbg;
1062         int      idx;
1063         node_entry_t *entry;
1064
1065         irn   = get_binop_left(node);
1066         entry = env->entries[get_irn_idx(irn)];
1067         assert(entry);
1068
1069         if (! entry->low_word) {
1070                 /* not ready yet, wait */
1071                 pdeq_putr(env->waitq, node);
1072                 return;
1073         }
1074
1075         lop_l = entry->low_word;
1076         lop_h = entry->high_word;
1077
1078         irn   = get_binop_right(node);
1079         entry = env->entries[get_irn_idx(irn)];
1080         assert(entry);
1081
1082         if (! entry->low_word) {
1083                 /* not ready yet, wait */
1084                 pdeq_putr(env->waitq, node);
1085                 return;
1086         }
1087
1088         rop_l = entry->low_word;
1089         rop_h = entry->high_word;
1090
1091         dbg = get_irn_dbg_info(node);
1092         block = get_nodes_block(node);
1093
1094         idx = get_irn_idx(node);
1095         assert(idx < env->n_entries);
1096         env->entries[idx]->low_word  = constr_rd(dbg, current_ir_graph, block, lop_l, rop_l, mode);
1097         env->entries[idx]->high_word = constr_rd(dbg, current_ir_graph, block, lop_h, rop_h, mode);
1098 }
1099
1100 /** create a logical operation tranformation */
1101 #define lower_logical(op)                                                \
1102 static void lower_##op(ir_node *node, ir_mode *mode, lower_env_t *env) { \
1103         lower_Binop_logical(node, mode, env, new_rd_##op);                   \
1104 }
1105
1106 lower_logical(And)
1107 lower_logical(Or)
1108 lower_logical(Eor)
1109
1110 /**
1111  * Translate a Not.
1112  *
1113  * Create two logical Nots.
1114  */
1115 static void lower_Not(ir_node *node, ir_mode *mode, lower_env_t *env) {
1116         ir_node  *block, *irn;
1117         ir_node  *op_l, *op_h;
1118         dbg_info *dbg;
1119         int      idx;
1120         node_entry_t *entry;
1121
1122         irn   = get_Not_op(node);
1123         entry = env->entries[get_irn_idx(irn)];
1124         assert(entry);
1125
1126         if (! entry->low_word) {
1127                 /* not ready yet, wait */
1128                 pdeq_putr(env->waitq, node);
1129                 return;
1130         }
1131
1132         op_l = entry->low_word;
1133         op_h = entry->high_word;
1134
1135         dbg = get_irn_dbg_info(node);
1136         block = get_nodes_block(node);
1137
1138         idx = get_irn_idx(node);
1139         assert(idx < env->n_entries);
1140         env->entries[idx]->low_word  = new_rd_Not(dbg, current_ir_graph, block, op_l, mode);
1141         env->entries[idx]->high_word = new_rd_Not(dbg, current_ir_graph, block, op_h, mode);
1142 }
1143
1144 /**
1145  * Translate a Cond.
1146  */
1147 static void lower_Cond(ir_node *node, ir_mode *mode, lower_env_t *env) {
1148         ir_node *cmp, *left, *right, *block;
1149         ir_node *sel = get_Cond_selector(node);
1150         ir_mode *m = get_irn_mode(sel);
1151         int     idx;
1152
1153         if (m == mode_b) {
1154                 node_entry_t *lentry, *rentry;
1155                 ir_node  *proj, *projT = NULL, *projF = NULL;
1156                 ir_node  *new_bl, *cmpH, *cmpL, *irn;
1157                 ir_node  *projHF, *projHT;
1158                 ir_node  *dst_blk;
1159                 ir_graph *irg;
1160                 pn_Cmp   pnc;
1161                 dbg_info *dbg;
1162
1163                 cmp   = get_Proj_pred(sel);
1164                 left  = get_Cmp_left(cmp);
1165                 idx   = get_irn_idx(left);
1166                 lentry = env->entries[idx];
1167
1168                 if (! lentry)
1169                         /* a normal Cmp */
1170                         return;
1171
1172                 right = get_Cmp_right(cmp);
1173                 idx   = get_irn_idx(right);
1174                 rentry = env->entries[idx];
1175                 assert(rentry);
1176
1177                 if (! lentry->low_word || !rentry->low_word) {
1178                         /* not yet ready */
1179                         pdeq_putr(env->waitq, node);
1180                         return;
1181                 }
1182
1183                 /* all right, build the code */
1184                 for (proj = get_irn_link(node); proj; proj = get_irn_link(proj)) {
1185                         long proj_nr = get_Proj_proj(proj);
1186
1187                         if (proj_nr == pn_Cond_true) {
1188                                 assert(projT == NULL && "more than one Proj(true)");
1189                                 projT = proj;
1190                         }
1191                         else {
1192                                 assert(proj_nr == pn_Cond_false);
1193                                 assert(projF == NULL && "more than one Proj(false)");
1194                                 projF = proj;
1195                         }
1196                         mark_irn_visited(proj);
1197                 }
1198                 assert(projT && projF);
1199
1200                 /* create a new high compare */
1201                 block = get_nodes_block(cmp);
1202                 dbg   = get_irn_dbg_info(cmp);
1203                 irg   = current_ir_graph;
1204
1205                 cmpH = new_rd_Cmp(dbg, irg, block, lentry->high_word, rentry->high_word);
1206
1207                 pnc = get_Proj_proj(sel);
1208                 if (pnc == pn_Cmp_Eq) {
1209                         /* simple case:a == b <==> a_h == b_h && a_l == b_l */
1210                         pmap_entry *entry = pmap_find(env->proj_2_block, projF);
1211
1212                         assert(entry);
1213                         dst_blk = entry->value;
1214
1215                         irn = new_r_Proj(irg, block, cmpH, mode_b, pn_Cmp_Eq);
1216                         dbg = get_irn_dbg_info(node);
1217                         irn = new_rd_Cond(dbg, irg, block, irn);
1218
1219                         projHF = new_r_Proj(irg, block, irn, mode_X, pn_Cond_false);
1220                         mark_irn_visited(projHF);
1221                         exchange(projF, projHF);
1222
1223                         projHT = new_r_Proj(irg, block, irn, mode_X, pn_Cond_true);
1224                         mark_irn_visited(projHT);
1225
1226                         new_bl = new_r_Block(irg, 1, &projHT);
1227
1228                         dbg   = get_irn_dbg_info(cmp);
1229                         cmpL = new_rd_Cmp(dbg, irg, new_bl, lentry->low_word, rentry->low_word);
1230                         irn = new_r_Proj(irg, new_bl, cmpL, mode_b, pn_Cmp_Eq);
1231                         dbg = get_irn_dbg_info(node);
1232                         irn = new_rd_Cond(dbg, irg, new_bl, irn);
1233
1234                         proj = new_r_Proj(irg, new_bl, irn, mode_X, pn_Cond_false);
1235                         mark_irn_visited(proj);
1236                         add_block_cf_input(dst_blk, projHF, proj);
1237
1238                         proj = new_r_Proj(irg, new_bl, irn, mode_X, pn_Cond_true);
1239                         mark_irn_visited(proj);
1240                         exchange(projT, proj);
1241                 }
1242                 else if (pnc == pn_Cmp_Lg) {
1243                         /* simple case:a != b <==> a_h != b_h || a_l != b_l */
1244                         pmap_entry *entry = pmap_find(env->proj_2_block, projT);
1245
1246                         assert(entry);
1247                         dst_blk = entry->value;
1248
1249                         irn = new_r_Proj(irg, block, cmpH, mode_b, pn_Cmp_Lg);
1250                         dbg = get_irn_dbg_info(node);
1251                         irn = new_rd_Cond(dbg, irg, block, irn);
1252
1253                         projHT = new_r_Proj(irg, block, irn, mode_X, pn_Cond_true);
1254                         mark_irn_visited(projHT);
1255                         exchange(projT, projHT);
1256
1257                         projHF = new_r_Proj(irg, block, irn, mode_X, pn_Cond_false);
1258                         mark_irn_visited(projHF);
1259
1260                         new_bl = new_r_Block(irg, 1, &projHF);
1261
1262                         dbg   = get_irn_dbg_info(cmp);
1263                         cmpL = new_rd_Cmp(dbg, irg, new_bl, lentry->low_word, rentry->low_word);
1264                         irn = new_r_Proj(irg, new_bl, cmpL, mode_b, pn_Cmp_Lg);
1265                         dbg = get_irn_dbg_info(node);
1266                         irn = new_rd_Cond(dbg, irg, new_bl, irn);
1267
1268                         proj = new_r_Proj(irg, new_bl, irn, mode_X, pn_Cond_true);
1269                         mark_irn_visited(proj);
1270                         add_block_cf_input(dst_blk, projHT, proj);
1271
1272                         proj = new_r_Proj(irg, new_bl, irn, mode_X, pn_Cond_false);
1273                         mark_irn_visited(proj);
1274                         exchange(projF, proj);
1275                 }
1276                 else {
1277                         /* a rel b <==> a_h rel b_h || (a_h == b_h && a_l rel b_l) */
1278                         ir_node *dstT, *dstF, *newbl_eq, *newbl_l;
1279                         pmap_entry *entry;
1280
1281                         entry = pmap_find(env->proj_2_block, projT);
1282                         assert(entry);
1283                         dstT = entry->value;
1284
1285                         entry = pmap_find(env->proj_2_block, projF);
1286                         assert(entry);
1287                         dstF = entry->value;
1288
1289                         irn = new_r_Proj(irg, block, cmpH, mode_b, pnc);
1290                         dbg = get_irn_dbg_info(node);
1291                         irn = new_rd_Cond(dbg, irg, block, irn);
1292
1293                         projHT = new_r_Proj(irg, block, irn, mode_X, pn_Cond_true);
1294                         mark_irn_visited(projHT);
1295                         exchange(projT, projHT);
1296                         projT = projHT;
1297
1298                         projHF = new_r_Proj(irg, block, irn, mode_X, pn_Cond_false);
1299                         mark_irn_visited(projHF);
1300
1301                         newbl_eq = new_r_Block(irg, 1, &projHF);
1302
1303                         irn = new_r_Proj(irg, newbl_eq, cmpH, mode_b, pn_Cmp_Eq);
1304                         irn = new_rd_Cond(dbg, irg, newbl_eq, irn);
1305
1306                         proj = new_r_Proj(irg, newbl_eq, irn, mode_X, pn_Cond_false);
1307                         mark_irn_visited(proj);
1308                         exchange(projF, proj);
1309                         projF = proj;
1310
1311                         proj = new_r_Proj(irg, newbl_eq, irn, mode_X, pn_Cond_true);
1312                         mark_irn_visited(proj);
1313
1314                         newbl_l = new_r_Block(irg, 1, &proj);
1315
1316                         dbg   = get_irn_dbg_info(cmp);
1317                         cmpL = new_rd_Cmp(dbg, irg, newbl_l, lentry->low_word, rentry->low_word);
1318                         irn = new_r_Proj(irg, newbl_l, cmpL, mode_b, pnc);
1319                         dbg = get_irn_dbg_info(node);
1320                         irn = new_rd_Cond(dbg, irg, newbl_l, irn);
1321
1322                         proj = new_r_Proj(irg, newbl_l, irn, mode_X, pn_Cond_true);
1323                         mark_irn_visited(proj);
1324                         add_block_cf_input(dstT, projT, proj);
1325
1326                         proj = new_r_Proj(irg, newbl_l, irn, mode_X, pn_Cond_false);
1327                         mark_irn_visited(proj);
1328                         add_block_cf_input(dstF, projF, proj);
1329                 }
1330
1331                 /* we have changed the control flow */
1332                 env->flags |= CF_CHANGED;
1333         }
1334         else {
1335                 idx = get_irn_idx(sel);
1336
1337                 if (env->entries[idx]) {
1338                         /*
1339                            Bad, a jump-table with double-word index.
1340                            This should not happen, but if it does we handle
1341                            it like a Conv were between (in other words, ignore
1342                            the high part.
1343                          */
1344
1345                         if (! env->entries[idx]->low_word) {
1346                                 /* not ready yet, wait */
1347                                 pdeq_putr(env->waitq, node);
1348                                 return;
1349                         }
1350                         set_Cond_selector(node, env->entries[idx]->low_word);
1351                 }
1352         }
1353 }
1354
1355 /**
1356  * Translate a Conv to higher_signed
1357  */
1358 static void lower_Conv_to_Ls(ir_node *node, lower_env_t *env) {
1359         ir_node  *op    = get_Conv_op(node);
1360         ir_mode  *imode = get_irn_mode(op);
1361         ir_mode  *dst_mode = env->params->low_signed;
1362         int      idx = get_irn_idx(node);
1363         ir_graph *irg = current_ir_graph;
1364         ir_node  *block = get_nodes_block(node);
1365         dbg_info *dbg = get_irn_dbg_info(node);
1366
1367         assert(idx < env->n_entries);
1368
1369         if (mode_is_int(imode) || mode_is_reference(imode)) {
1370                 /* simple case: create a high word */
1371                 if (imode != dst_mode)
1372                         op = new_rd_Conv(dbg, irg, block, op, dst_mode);
1373
1374                 env->entries[idx]->low_word  = op;
1375                 env->entries[idx]->high_word = new_rd_Shrs(dbg, irg, block, op,
1376                         new_Const_long(mode_Iu, get_mode_size_bits(dst_mode) - 1), dst_mode);
1377         }
1378         else {
1379                 ir_node *irn, *call;
1380                 ir_mode *omode = env->params->high_signed;
1381                 ir_type *mtp = get_conv_type(imode, omode, env);
1382
1383                 irn = get_intrinsic_address(mtp, get_irn_op(node), imode, omode, block, env);
1384                 call = new_rd_Call(dbg, irg, block, get_irg_no_mem(irg), irn, 1, &op, mtp);
1385                 set_irn_pinned(call, get_irn_pinned(node));
1386                 irn = new_r_Proj(irg, block, call, mode_T, pn_Call_T_result);
1387
1388                 env->entries[idx]->low_word  = new_r_Proj(irg, block, irn, dst_mode, 0);
1389                 env->entries[idx]->high_word = new_r_Proj(irg, block, irn, dst_mode, 1);
1390         }
1391 }
1392
1393 /**
1394  * Translate a Conv to higher_unsigned
1395  */
1396 static void lower_Conv_to_Lu(ir_node *node, lower_env_t *env) {
1397         ir_node  *op    = get_Conv_op(node);
1398         ir_mode  *imode  = get_irn_mode(op);
1399         ir_mode  *dst_mode = env->params->low_unsigned;
1400         int      idx = get_irn_idx(node);
1401         ir_graph *irg = current_ir_graph;
1402         ir_node  *block = get_nodes_block(node);
1403         dbg_info *dbg = get_irn_dbg_info(node);
1404
1405         assert(idx < env->n_entries);
1406
1407         if (mode_is_int(imode) || mode_is_reference(imode)) {
1408                 /* simple case: create a high word */
1409                 if (imode != dst_mode)
1410                         op = new_rd_Conv(dbg, irg, block, op, dst_mode);
1411
1412                 env->entries[idx]->low_word  = op;
1413                 env->entries[idx]->high_word = new_Const(dst_mode, get_mode_null(dst_mode));
1414         }
1415         else {
1416                 ir_node *irn, *call;
1417                 ir_mode *omode = env->params->high_unsigned;
1418                 ir_type *mtp = get_conv_type(imode, omode, env);
1419
1420                 irn = get_intrinsic_address(mtp, get_irn_op(node), imode, omode, block, env);
1421                 call = new_rd_Call(dbg, irg, block, get_irg_no_mem(irg), irn, 1, &op, mtp);
1422                 set_irn_pinned(call, get_irn_pinned(node));
1423                 irn = new_r_Proj(irg, block, call, mode_T, pn_Call_T_result);
1424
1425                 env->entries[idx]->low_word  = new_r_Proj(irg, block, irn, dst_mode, 0);
1426                 env->entries[idx]->high_word = new_r_Proj(irg, block, irn, dst_mode, 1);
1427         }
1428 }
1429
1430 /**
1431  * Translate a Conv from higher_signed
1432  */
1433 static void lower_Conv_from_Ls(ir_node *node, lower_env_t *env) {
1434         ir_node  *op    = get_Conv_op(node);
1435         ir_mode  *omode = get_irn_mode(node);
1436         ir_node  *block = get_nodes_block(node);
1437         dbg_info *dbg = get_irn_dbg_info(node);
1438         int      idx = get_irn_idx(op);
1439         ir_graph *irg = current_ir_graph;
1440
1441         assert(idx < env->n_entries);
1442
1443         if (mode_is_int(omode) || mode_is_reference(omode)) {
1444                 op = env->entries[idx]->low_word;
1445
1446                 /* simple case: create a high word */
1447                 if (omode != env->params->low_signed)
1448                         op = new_rd_Conv(dbg, irg, block, op, omode);
1449
1450                 set_Conv_op(node, op);
1451         }
1452         else {
1453                 ir_node *irn, *call, *in[2];
1454                 ir_mode *imode = env->params->high_signed;
1455                 ir_type *mtp = get_conv_type(imode, omode, env);
1456
1457                 irn = get_intrinsic_address(mtp, get_irn_op(node), imode, omode, block, env);
1458                 in[0] = env->entries[idx]->low_word;
1459                 in[1] = env->entries[idx]->high_word;
1460
1461                 call = new_rd_Call(dbg, irg, block, get_irg_no_mem(irg), irn, 2, in, mtp);
1462                 set_irn_pinned(call, get_irn_pinned(node));
1463                 irn = new_r_Proj(irg, block, call, mode_T, pn_Call_T_result);
1464
1465                 exchange(node, new_r_Proj(irg, block, irn, omode, 0));
1466         }
1467 }
1468
1469 /**
1470  * Translate a Conv from higher_unsigned
1471  */
1472 static void lower_Conv_from_Lu(ir_node *node, lower_env_t *env) {
1473         ir_node  *op    = get_Conv_op(node);
1474         ir_mode  *omode = get_irn_mode(node);
1475         ir_node  *block = get_nodes_block(node);
1476         dbg_info *dbg = get_irn_dbg_info(node);
1477         int      idx = get_irn_idx(op);
1478         ir_graph *irg = current_ir_graph;
1479
1480         assert(idx < env->n_entries);
1481
1482         if (mode_is_int(omode) || mode_is_reference(omode)) {
1483                 op = env->entries[idx]->low_word;
1484
1485                 /* simple case: create a high word */
1486                 if (omode != env->params->low_unsigned)
1487                         op = new_rd_Conv(dbg, irg, block, op, omode);
1488
1489                 set_Conv_op(node, op);
1490         }
1491         else {
1492                 ir_node *irn, *call, *in[2];
1493                 ir_mode *imode = env->params->high_unsigned;
1494                 ir_type *mtp = get_conv_type(imode, omode, env);
1495
1496                 irn = get_intrinsic_address(mtp, get_irn_op(node), imode, omode, block, env);
1497                 in[0] = env->entries[idx]->low_word;
1498                 in[1] = env->entries[idx]->high_word;
1499
1500                 call = new_rd_Call(dbg, irg, block, get_irg_no_mem(irg), irn, 2, in, mtp);
1501                 set_irn_pinned(call, get_irn_pinned(node));
1502                 irn = new_r_Proj(irg, block, call, mode_T, pn_Call_T_result);
1503
1504                 exchange(node, new_r_Proj(irg, block, irn, omode, 0));
1505         }
1506 }
1507
1508 /**
1509  * Translate a Conv.
1510  */
1511 static void lower_Conv(ir_node *node, ir_mode *mode, lower_env_t *env) {
1512         mode = get_irn_mode(node);
1513
1514         if (mode == env->params->high_signed)
1515                 lower_Conv_to_Ls(node, env);
1516         else if (mode == env->params->high_unsigned)
1517                 lower_Conv_to_Lu(node, env);
1518         else {
1519                 ir_mode *mode = get_irn_mode(get_Conv_op(node));
1520
1521                 if (mode == env->params->high_signed)
1522                         lower_Conv_from_Ls(node, env);
1523                 else {
1524                         assert(mode == env->params->high_unsigned);
1525                         lower_Conv_from_Lu(node, env);
1526                 }
1527         }
1528 }
1529
1530 /**
1531  * Lower the method type.
1532  */
1533 static ir_type *lower_mtp(ir_type *mtp, lower_env_t *env) {
1534         pmap_entry *entry;
1535         ident      *id;
1536         ir_type    *res;
1537
1538         if (is_lowered_type(mtp))
1539                 return mtp;
1540
1541         entry = pmap_find(lowered_type, mtp);
1542         if (! entry) {
1543                 int i, n, r, n_param, n_res;
1544
1545                 /* count new number of params */
1546                 n_param = n = get_method_n_params(mtp);
1547                 for (i = n_param - 1; i >= 0; --i) {
1548                         ir_type *tp = get_method_param_type(mtp, i);
1549
1550                         if (is_Primitive_type(tp)) {
1551                                 ir_mode *mode = get_type_mode(tp);
1552
1553                                 if (mode == env->params->high_signed ||
1554                                         mode == env->params->high_unsigned)
1555                                         ++n_param;
1556                         }
1557                 }
1558
1559                 /* count new number of results */
1560                 n_res = r = get_method_n_ress(mtp);
1561                 for (i = n_res - 1; i >= 0; --i) {
1562                         ir_type *tp = get_method_res_type(mtp, i);
1563
1564                         if (is_Primitive_type(tp)) {
1565                                 ir_mode *mode = get_type_mode(tp);
1566
1567                                 if (mode == env->params->high_signed ||
1568                                         mode == env->params->high_unsigned)
1569                                         ++n_res;
1570                         }
1571                 }
1572
1573                 id = mangle_u(new_id_from_chars("L", 1), get_type_ident(mtp));
1574                 res = new_type_method(id, n_param, n_res);
1575
1576                 /* set param types and result types */
1577                 for (i = n_param = 0; i < n; ++i) {
1578                         ir_type *tp = get_method_param_type(mtp, i);
1579
1580                         if (is_Primitive_type(tp)) {
1581                                 ir_mode *mode = get_type_mode(tp);
1582
1583                                 if (mode == env->params->high_signed) {
1584                                         set_method_param_type(res, n_param++, tp_s);
1585                                         set_method_param_type(res, n_param++, tp_s);
1586                                 }
1587                                 else if (mode == env->params->high_unsigned) {
1588                                         set_method_param_type(res, n_param++, tp_u);
1589                                         set_method_param_type(res, n_param++, tp_u);
1590                                 }
1591                                 else
1592                                         set_method_param_type(res, n_param++, tp);
1593                         }
1594                         else
1595                                 set_method_param_type(res, n_param++, tp);
1596                 }
1597                 for (i = n_res = 0; i < r; ++i) {
1598                         ir_type *tp = get_method_res_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_res_type(res, n_res++, tp_s);
1605                                         set_method_res_type(res, n_res++, tp_s);
1606                                 }
1607                                 else if (mode == env->params->high_unsigned) {
1608                                         set_method_res_type(res, n_res++, tp_u);
1609                                         set_method_res_type(res, n_res++, tp_u);
1610                                 }
1611                                 else
1612                                         set_method_res_type(res, n_res++, tp);
1613                         }
1614                         else
1615                                 set_method_res_type(res, n_res++, tp);
1616                 }
1617                 set_lowered_type(mtp, res);
1618                 pmap_insert(lowered_type, mtp, res);
1619         }
1620         else
1621                 res = entry->value;
1622         return res;
1623 }
1624
1625 /**
1626  * Translate a Return.
1627  */
1628 static void lower_Return(ir_node *node, ir_mode *mode, lower_env_t *env) {
1629         ir_graph *irg = current_ir_graph;
1630         entity   *ent = get_irg_entity(irg);
1631         ir_type  *mtp = get_entity_type(ent);
1632         ir_node  **in;
1633         int      i, j, n, idx;
1634         int      need_conv = 0;
1635
1636         /* check if this return must be lowered */
1637         for (i = 0, n = get_Return_n_ress(node); i < n; ++i) {
1638                 ir_node *pred = get_Return_res(node, i);
1639                 ir_mode *mode = get_irn_op_mode(pred);
1640
1641                 if (mode == env->params->high_signed ||
1642                         mode == env->params->high_unsigned) {
1643                         idx = get_irn_idx(pred);
1644                         if (! env->entries[idx]->low_word) {
1645                                 /* not ready yet, wait */
1646                                 pdeq_putr(env->waitq, node);
1647                                 return;
1648                         }
1649                         need_conv = 1;
1650                 }
1651         }
1652         if (! need_conv)
1653                 return;
1654
1655         ent = get_irg_entity(irg);
1656         mtp = get_entity_type(ent);
1657
1658         mtp = lower_mtp(mtp, env);
1659         set_entity_type(ent, mtp);
1660
1661         /* create a new in array */
1662         NEW_ARR_A(ir_node *, in, get_method_n_ress(mtp) + 1);
1663         in[0] = get_Return_mem(node);
1664
1665         for (j = i = 0, n = get_Return_n_ress(node); i < n; ++i) {
1666                 ir_node *pred = get_Return_res(node, i);
1667
1668                 idx = get_irn_idx(pred);
1669                 assert(idx < env->n_entries);
1670
1671                 if (env->entries[idx]) {
1672                         in[++j] = env->entries[idx]->low_word;
1673                         in[++j] = env->entries[idx]->high_word;
1674                 }
1675                 else
1676                         in[++j] = pred;
1677         }
1678
1679         set_irn_in(node, j+1, in);
1680 }
1681
1682 /**
1683  * Translate the parameters.
1684  */
1685 static void lower_Start(ir_node *node, ir_mode *mode, lower_env_t *env) {
1686         ir_graph *irg = current_ir_graph;
1687         entity   *ent = get_irg_entity(irg);
1688         ir_type  *tp  = get_entity_type(ent);
1689         ir_type  *mtp;
1690         long     *new_projs;
1691         int      i, j, n_params, rem;
1692         ir_node  *proj, *args;
1693
1694         if (is_lowered_type(tp))
1695                 mtp = get_associated_type(tp);
1696         else
1697                 mtp = tp;
1698
1699         assert(! is_lowered_type(mtp));
1700
1701         n_params = get_method_n_params(mtp);
1702         if (n_params <= 0)
1703                 return;
1704
1705         NEW_ARR_A(long, new_projs, n_params);
1706
1707         /* first check if we have parameters that must be fixed */
1708         for (i = j = 0; i < n_params; ++i, ++j) {
1709                 ir_type *tp = get_method_param_type(mtp, i);
1710
1711                 new_projs[i] = j;
1712                 if (is_Primitive_type(tp)) {
1713                         ir_mode *mode = get_type_mode(tp);
1714
1715                         if (mode == env->params->high_signed ||
1716                                 mode == env->params->high_unsigned)
1717                                 ++j;
1718                 }
1719         }
1720         if (i == j)
1721                 return;
1722
1723         mtp = lower_mtp(mtp, env);
1724         set_entity_type(ent, mtp);
1725
1726         /* switch off optimization for new Proj nodes or they might be CSE'ed
1727            with not patched one's */
1728         rem = get_optimize();
1729         set_optimize(0);
1730
1731         /* ok, fix all Proj's and create new ones */
1732         args = get_irg_args(irg);
1733         for (proj = get_irn_link(node); proj; proj = get_irn_link(proj)) {
1734                 ir_node *pred = get_Proj_pred(proj);
1735                 long proj_nr;
1736                 int idx;
1737                 ir_mode *mode;
1738                 dbg_info *dbg;
1739
1740                 /* do not visit this node again */
1741                 mark_irn_visited(proj);
1742
1743                 if (pred != args)
1744                         continue;
1745
1746                 proj_nr = get_Proj_proj(proj);
1747                 set_Proj_proj(proj, new_projs[proj_nr]);
1748
1749                 idx = get_irn_idx(proj);
1750                 if (env->entries[idx]) {
1751                         mode = get_irn_mode(proj);
1752
1753                         if (mode == env->params->high_signed)
1754                                 mode = env->params->low_signed;
1755                         else
1756                                 mode = env->params->low_unsigned;
1757
1758                         dbg = get_irn_dbg_info(proj);
1759                         env->entries[idx]->low_word  =
1760                                 new_rd_Proj(dbg, irg, get_nodes_block(proj), args, mode, new_projs[proj_nr]);
1761                         env->entries[idx]->high_word =
1762                                 new_rd_Proj(dbg, irg, get_nodes_block(proj), args, mode, new_projs[proj_nr] + 1);
1763                 }
1764         }
1765         set_optimize(rem);
1766 }
1767
1768 /**
1769  * Translate a Call.
1770  */
1771 static void lower_Call(ir_node *node, ir_mode *mode, lower_env_t *env) {
1772         ir_graph *irg = current_ir_graph;
1773         ir_type  *tp = get_Call_type(node);
1774         ir_type  *call_tp;
1775         ir_node  **in, *proj, *results;
1776         int      n_params, n_res, need_lower = 0;
1777         int      i, j;
1778         long     *res_numbers = NULL;
1779
1780         if (is_lowered_type(tp))
1781                 call_tp = get_associated_type(tp);
1782         else
1783                 call_tp = tp;
1784
1785         assert(! is_lowered_type(call_tp));
1786
1787         n_params = get_method_n_params(call_tp);
1788         for (i = 0; i < n_params; ++i) {
1789                 ir_type *tp = get_method_param_type(call_tp, i);
1790
1791                 if (is_Primitive_type(tp)) {
1792                         ir_mode *mode = get_type_mode(tp);
1793
1794                         if (mode == env->params->high_signed ||
1795                                 mode == env->params->high_unsigned) {
1796                                 need_lower = 1;
1797                                 break;
1798                         }
1799                 }
1800         }
1801         n_res = get_method_n_ress(call_tp);
1802         if (n_res > 0) {
1803                 NEW_ARR_A(long, res_numbers, n_res);
1804
1805                 for (i = j = 0; i < n_res; ++i, ++j) {
1806                         ir_type *tp = get_method_res_type(call_tp, i);
1807
1808                         res_numbers[i] = j;
1809                         if (is_Primitive_type(tp)) {
1810                                 ir_mode *mode = get_type_mode(tp);
1811
1812                                 if (mode == env->params->high_signed ||
1813                                         mode == env->params->high_unsigned) {
1814                                         need_lower = 1;
1815                                         ++j;
1816                                 }
1817                         }
1818                 }
1819         }
1820
1821         if (! need_lower)
1822                 return;
1823
1824         /* let's lower it */
1825         call_tp = lower_mtp(call_tp, env);
1826         set_Call_type(node, call_tp);
1827
1828         NEW_ARR_A(ir_node *, in, get_method_n_params(call_tp) + 2);
1829
1830         in[0] = get_Call_mem(node);
1831         in[1] = get_Call_ptr(node);
1832
1833         for (j = 2, i = 0; i < n_params; ++i) {
1834                 ir_node *pred = get_Call_param(node, i);
1835                 int     idx = get_irn_idx(pred);
1836
1837                 if (env->entries[idx]) {
1838                         if (! env->entries[idx]->low_word) {
1839                                 /* not ready yet, wait */
1840                                 pdeq_putr(env->waitq, node);
1841                                 return;
1842                         }
1843                         in[j++] = env->entries[idx]->low_word;
1844                         in[j++] = env->entries[idx]->high_word;
1845                 }
1846                 else
1847                         in[j++] = pred;
1848         }
1849
1850         set_irn_in(node, j, in);
1851
1852         /* fix the results */
1853         results = NULL;
1854         for (proj = get_irn_link(node); proj; proj = get_irn_link(proj)) {
1855                 long proj_nr = get_Proj_proj(proj);
1856
1857                 if (proj_nr == pn_Call_T_result && get_Proj_pred(proj) == node) {
1858                         /* found the result proj */
1859                         results = proj;
1860                         break;
1861                 }
1862         }
1863
1864         if (results) {          /* there are results */
1865                 int rem = get_optimize();
1866
1867                 /* switch off optimization for new Proj nodes or they might be CSE'ed
1868                    with not patched one's */
1869                 set_optimize(0);
1870                 for (i = j = 0, proj = get_irn_link(results); proj; proj = get_irn_link(proj), ++i, ++j) {
1871                         if (get_Proj_pred(proj) == results) {
1872                                 long proj_nr = get_Proj_proj(proj);
1873                                 int idx;
1874
1875                                 /* found a result */
1876                                 set_Proj_proj(proj, res_numbers[proj_nr]);
1877                                 idx = get_irn_idx(proj);
1878                                 if (env->entries[idx]) {
1879                                         ir_mode *mode = get_irn_mode(proj);
1880                                         dbg_info *dbg;
1881
1882                                         if (mode == env->params->high_signed)
1883                                                 mode = env->params->low_signed;
1884                                         else
1885                                                 mode = env->params->low_unsigned;
1886
1887                                         dbg = get_irn_dbg_info(proj);
1888                                         env->entries[idx]->low_word  =
1889                                                 new_rd_Proj(dbg, irg, get_nodes_block(proj), results, mode, res_numbers[proj_nr]);
1890                                         env->entries[idx]->high_word =
1891                                                 new_rd_Proj(dbg, irg, get_nodes_block(proj), results, mode, res_numbers[proj_nr] + 1);
1892                                 }
1893                                 mark_irn_visited(proj);
1894                         }
1895                 }
1896                 set_optimize(rem);
1897         }
1898 }
1899
1900 /**
1901  * Translate an Unknown into two.
1902  */
1903 static void lower_Unknown(ir_node *node, ir_mode *mode, lower_env_t *env) {
1904         int idx = get_irn_idx(node);
1905
1906         env->entries[idx]->low_word  =
1907         env->entries[idx]->high_word = new_r_Unknown(current_ir_graph, mode);
1908 }
1909
1910 /**
1911  * Translate a Phi.
1912  *
1913  * First step: just create two templates
1914  */
1915 static void lower_Phi(ir_node *phi, ir_mode *mode, lower_env_t *env) {
1916         ir_node  *block, *unk;
1917         ir_node  **inl, **inh;
1918         dbg_info *dbg;
1919         int      idx, i, arity = get_Phi_n_preds(phi);
1920         int      enq = 0;
1921
1922         idx = get_irn_idx(phi);
1923         if (env->entries[idx]->low_word) {
1924                 /* Phi nodes already build, check for inputs */
1925                 ir_node *phil = env->entries[idx]->low_word;
1926                 ir_node *phih = env->entries[idx]->high_word;
1927
1928                 for (i = 0; i < arity; ++i) {
1929                         ir_node *pred = get_Phi_pred(phi, i);
1930                         int     idx = get_irn_idx(pred);
1931
1932                         if (env->entries[idx]->low_word) {
1933                                 set_Phi_pred(phil, i, env->entries[idx]->low_word);
1934                                 set_Phi_pred(phil, i, env->entries[idx]->high_word);
1935                         }
1936                         else {
1937                                 /* still not ready */
1938                                 pdeq_putr(env->waitq, phi);
1939                                 return;
1940                         }
1941                 }
1942         }
1943
1944         /* first create a new in array */
1945         NEW_ARR_A(ir_node *, inl, arity);
1946         NEW_ARR_A(ir_node *, inh, arity);
1947         unk = new_r_Unknown(current_ir_graph, mode);
1948
1949         for (i = 0; i < arity; ++i) {
1950                 ir_node *pred = get_Phi_pred(phi, i);
1951                 int     idx = get_irn_idx(pred);
1952
1953                 if (env->entries[idx]->low_word) {
1954                         inl[i] = env->entries[idx]->low_word;
1955                         inh[i] = env->entries[idx]->high_word;
1956                 }
1957                 else {
1958                         inl[i] = unk;
1959                         inh[i] = unk;
1960                         enq = 1;
1961                 }
1962         }
1963
1964         dbg = get_irn_dbg_info(phi);
1965         block = get_nodes_block(phi);
1966
1967         idx = get_irn_idx(phi);
1968         assert(idx < env->n_entries);
1969         env->entries[idx]->low_word  = new_rd_Phi(dbg, current_ir_graph, block, arity, inl, mode);
1970         env->entries[idx]->high_word = new_rd_Phi(dbg, current_ir_graph, block, arity, inh, mode);
1971
1972         if (enq) {
1973                 /* not yet finished */
1974                 pdeq_putr(env->waitq, phi);
1975         }
1976 }
1977
1978 /**
1979  * check for opcodes that must always be lowered.
1980  */
1981 static int always_lower(opcode code) {
1982         switch (code) {
1983         case iro_Start:
1984         case iro_Call:
1985         case iro_Return:
1986         case iro_Cond:
1987                 return 1;
1988         default:
1989                 return 0;
1990         }
1991 }
1992
1993 /** The type of a lower function. */
1994 typedef void (*lower_func)(ir_node *node, ir_mode *mode, lower_env_t *env);
1995
1996 /**
1997  * lower a node.
1998  */
1999 static void lower_ops(ir_node *node, void *env)
2000 {
2001         lower_env_t  *lenv = env;
2002         node_entry_t *entry;
2003         int          idx = get_irn_idx(node);
2004
2005         entry = lenv->entries[idx];
2006         if (entry || always_lower(get_irn_opcode(node))) {
2007                 ir_op      *op = get_irn_op(node);
2008                 lower_func func = (lower_func)op->ops.generic;
2009
2010                 if (func) {
2011                         ir_mode *mode = get_irn_op_mode(node);
2012
2013                         if (mode == lenv->params->high_signed)
2014                                 mode = lenv->params->low_signed;
2015                         else
2016                                 mode = lenv->params->low_unsigned;
2017
2018                         DB((dbg, LEVEL_1, "  %+F\n", node));
2019                         func(node, mode, lenv);
2020                 }
2021         }
2022 }
2023
2024 #define IDENT(s)  new_id_from_chars(s, sizeof(s)-1)
2025
2026 /**
2027  * Compare two op_mode_entry_t's.
2028  */
2029 static int cmp_op_mode(const void *elt, const void *key, size_t size) {
2030         const op_mode_entry_t *e1 = elt;
2031         const op_mode_entry_t *e2 = key;
2032
2033         return (e1->op - e2->op) | (e1->imode - e2->imode) | (e1->omode - e2->omode);
2034 }
2035
2036 /**
2037  * Compare two conv_tp_entry_t's.
2038  */
2039 static int cmp_conv_tp(const void *elt, const void *key, size_t size) {
2040         const conv_tp_entry_t *e1 = elt;
2041         const conv_tp_entry_t *e2 = key;
2042
2043         return (e1->imode - e2->imode) | (e1->omode - e2->omode);
2044 }
2045
2046 /*
2047  * Do the lowering.
2048  */
2049 void lower_dw_ops(const lwrdw_param_t *param)
2050 {
2051         lower_env_t lenv;
2052         int i;
2053
2054         if (! param)
2055                 return;
2056
2057         if (! param->enable)
2058                 return;
2059
2060         FIRM_DBG_REGISTER(dbg, "firm.lower.dw");
2061
2062         assert(2 * get_mode_size_bits(param->low_signed)   == get_mode_size_bits(param->high_signed));
2063         assert(2 * get_mode_size_bits(param->low_unsigned) == get_mode_size_bits(param->high_unsigned));
2064         assert(get_mode_size_bits(param->low_signed) == get_mode_size_bits(param->low_unsigned));
2065
2066         if (! prim_types)
2067                 prim_types = pmap_create();
2068         if (! intrinsic_fkt)
2069                 intrinsic_fkt = new_set(cmp_op_mode, iro_MaxOpcode);
2070         if (! conv_types)
2071                 conv_types = new_set(cmp_conv_tp, 16);
2072         if (! lowered_type)
2073                 lowered_type = pmap_create();
2074
2075         if (! tp_u)
2076                 tp_u = get_primitive_type(param->low_unsigned);
2077         if (! tp_s)
2078                 tp_s = get_primitive_type(param->low_signed);
2079
2080
2081         if (! binop_tp_u) {
2082                 binop_tp_u = new_type_method(IDENT("binop_u_intrinsic"), 4, 2);
2083                 set_method_param_type(binop_tp_u, 0, tp_u);
2084                 set_method_param_type(binop_tp_u, 1, tp_u);
2085                 set_method_param_type(binop_tp_u, 2, tp_u);
2086                 set_method_param_type(binop_tp_u, 3, tp_u);
2087                 set_method_res_type(binop_tp_u, 0, tp_u);
2088                 set_method_res_type(binop_tp_u, 1, tp_u);
2089         }
2090         if (! binop_tp_s) {
2091                 binop_tp_s = new_type_method(IDENT("binop_s_intrinsic"), 4, 2);
2092                 set_method_param_type(binop_tp_s, 0, tp_s);
2093                 set_method_param_type(binop_tp_s, 1, tp_s);
2094                 set_method_param_type(binop_tp_s, 2, tp_s);
2095                 set_method_param_type(binop_tp_s, 3, tp_s);
2096                 set_method_res_type(binop_tp_s, 0, tp_s);
2097                 set_method_res_type(binop_tp_s, 1, tp_s);
2098         }
2099         if (! shiftop_tp_u) {
2100                 shiftop_tp_u = new_type_method(IDENT("shiftop_u_intrinsic"), 3, 2);
2101                 set_method_param_type(shiftop_tp_u, 0, tp_u);
2102                 set_method_param_type(shiftop_tp_u, 1, tp_u);
2103                 set_method_param_type(shiftop_tp_u, 2, tp_u);
2104                 set_method_res_type(shiftop_tp_u, 0, tp_u);
2105                 set_method_res_type(shiftop_tp_u, 1, tp_u);
2106         }
2107         if (! shiftop_tp_s) {
2108                 shiftop_tp_s = new_type_method(IDENT("shiftop_s_intrinsic"), 3, 2);
2109                 set_method_param_type(shiftop_tp_s, 0, tp_s);
2110                 set_method_param_type(shiftop_tp_s, 1, tp_s);
2111                 /* beware: shift count is always mode_Iu */
2112                 set_method_param_type(shiftop_tp_s, 2, tp_u);
2113                 set_method_res_type(shiftop_tp_s, 0, tp_s);
2114                 set_method_res_type(shiftop_tp_s, 1, tp_s);
2115         }
2116         if (! unop_tp_u) {
2117                 unop_tp_u = new_type_method(IDENT("unop_u_intrinsic"), 2, 2);
2118                 set_method_param_type(unop_tp_u, 0, tp_u);
2119                 set_method_param_type(unop_tp_u, 1, tp_u);
2120                 set_method_res_type(unop_tp_u, 0, tp_u);
2121                 set_method_res_type(unop_tp_u, 1, tp_u);
2122         }
2123         if (! unop_tp_s) {
2124                 unop_tp_s = new_type_method(IDENT("unop_s_intrinsic"), 2, 2);
2125                 set_method_param_type(unop_tp_s, 0, tp_s);
2126                 set_method_param_type(unop_tp_s, 1, tp_s);
2127                 set_method_res_type(unop_tp_s, 0, tp_s);
2128                 set_method_res_type(unop_tp_s, 1, tp_s);
2129         }
2130
2131         lenv.tv_mode_bytes = new_tarval_from_long(get_mode_size_bytes(param->low_unsigned), mode_Iu);
2132         lenv.tv_mode_bits  = new_tarval_from_long(get_mode_size_bits(param->low_unsigned), mode_Iu);
2133         lenv.waitq         = new_pdeq();
2134         lenv.params        = param;
2135
2136         /* first clear the generic function pointer for all ops */
2137         clear_irp_opcodes_generic_func();
2138
2139 #define LOWER2(op, fkt)   op_##op->ops.generic = (op_func)fkt
2140 #define LOWER(op)         LOWER2(op, lower_##op)
2141 #define LOWER_BIN(op)     LOWER2(op, lower_Binop)
2142 #define LOWER_UN(op)      LOWER2(op, lower_Unop)
2143
2144         LOWER(Load);
2145         LOWER(Store);
2146         LOWER(Const);
2147         LOWER(And);
2148         LOWER(Or);
2149         LOWER(Eor);
2150         LOWER(Not);
2151         LOWER(Cond);
2152         LOWER(Return);
2153         LOWER(Call);
2154         LOWER(Unknown);
2155         LOWER(Phi);
2156         LOWER(Start);
2157
2158         LOWER_BIN(Add);
2159         LOWER_BIN(Sub);
2160         LOWER_BIN(Mul);
2161         LOWER(Shl);
2162         LOWER(Shr);
2163         LOWER(Shrs);
2164         LOWER(Rot);
2165         LOWER_UN(Minus);
2166         LOWER(DivMod);
2167         LOWER(Div);
2168         LOWER(Mod);
2169         LOWER_UN(Abs);
2170
2171         LOWER(Conv);
2172
2173 #undef LOWER_UN
2174 #undef LOWER_BIN
2175 #undef LOWER
2176 #undef LOWER2
2177
2178         /* transform all graphs */
2179         for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
2180                 ir_graph *irg = get_irp_irg(i);
2181                 int n_idx;
2182
2183                 obstack_init(&lenv.obst);
2184
2185                 n_idx = get_irg_last_idx(irg);
2186                 lenv.n_entries = n_idx;
2187                 lenv.entries   = xmalloc(n_idx * sizeof(lenv.entries[0]));
2188                 memset(lenv.entries, 0, n_idx * sizeof(lenv.entries[0]));
2189
2190                 /* first step: link all nodes and allocate data */
2191                 lenv.flags = 0;
2192                 lenv.proj_2_block = pmap_create();
2193                 irg_walk_graph(irg, firm_clear_link, prepare_links, &lenv);
2194
2195                 if (lenv.flags & MUST_BE_LOWERED) {
2196                         DB((dbg, LEVEL_1, "Lowering graph %+F\n", irg));
2197
2198                         /* must do some work */
2199                         irg_walk_graph(irg, NULL, lower_ops, &lenv);
2200
2201                         /* last step: all waiting nodes */
2202                         DB((dbg, LEVEL_1, "finishing waiting nodes:\n"));
2203                         while (! pdeq_empty(lenv.waitq)) {
2204                                 ir_node *node = pdeq_getl(lenv.waitq);
2205
2206                                 lower_ops(node, &lenv);
2207                         }
2208
2209                         /* outs are invalid, we changed the graph */
2210                         set_irg_outs_inconsistent(irg);
2211
2212                         if (lenv.flags & CF_CHANGED) {
2213                                 /* control flow changed, dominance info is invalid */
2214                                 set_irg_doms_inconsistent(irg);
2215                                 set_irg_extblk_inconsistent(irg);
2216                                 set_irg_loopinfo_inconsistent(irg);
2217                         }
2218
2219                         dump_ir_block_graph(irg, "-dw");
2220                 }
2221                 pmap_destroy(lenv.proj_2_block);
2222                 free(lenv.entries);
2223                 obstack_free(&lenv.obst, NULL);
2224         }
2225         del_pdeq(lenv.waitq);
2226 }
2227
2228 /* Default implementation. */
2229 entity *def_create_intrinsic_fkt(ir_type *method, const ir_op *op,
2230                                  const ir_mode *imode, const ir_mode *omode,
2231                                  void *context)
2232 {
2233         char buf[64];
2234         ident *id;
2235         entity *ent;
2236
2237         if (imode == omode)
2238                 snprintf(buf, sizeof(buf), "__l%s%s", get_op_name(op), get_mode_name(imode));
2239         else
2240                 snprintf(buf, sizeof(buf), "__l%s%s%s", get_op_name(op),
2241                         get_mode_name(imode), get_mode_name(omode));
2242         id = new_id_from_str(buf);
2243
2244         ent = new_entity(get_glob_type(), id, method);
2245         set_entity_ld_ident(ent, get_entity_ident(ent));
2246         set_entity_visibility(ent, visibility_external_allocated);
2247         return ent;
2248 }