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

   1 /**
   2  * @file irlwrdw.c
   3  * @date 8.10.2004
   4  * @author Michael Beck
   5  * @brief Lower Double word operations, ie Mode L -> I.
   6  *
   7  * $Id$
   8  */
   9 #ifdef HAVE_CONFIG_H
  10 # include "config.h"
  11 #endif
  12
  13 #ifdef HAVE_MALLOC_H
  14 # include <malloc.h>
  15 #endif
  16 #ifdef HAVE_ALLOCA_H
  17 # include <alloca.h>
  18 #endif
  19 #ifdef HAVE_STRING_H
  20 # include <string.h>
  21 #endif
  22 #ifdef HAVE_STDLIB_H
  23 # include <stdlib.h>
  24 #endif
  25
  26 #include <assert.h>
  27
  28 #include "irnode_t.h"
  29 #include "irgraph_t.h"
  30 #include "irmode_t.h"
  31 #include "iropt_t.h"
  32 #include "irgmod.h"
  33 #include "tv_t.h"
  34 #include "dbginfo_t.h"
  35 #include "iropt_dbg.h"
  36 #include "irflag_t.h"
  37 #include "firmstat.h"
  38 #include "irgwalk.h"
  39 #include "ircons.h"
  40 #include "lower_dw.h"
  41 #include "irflag.h"
  42 #include "irtools.h"
  43 #include "debug.h"
  44 #include "set.h"
  45 #include "pmap.h"
  46 #include "pdeq.h"
  47 #include "irdump.h"
  48
  49 /** A map from mode to a primitive type. */
  50 static pmap *prim_types;
  51
  52 /** A map from (op, imode, omode) to Intrinsic functions entities. */
  53 static set *intrinsic_fkt;
  54
  55 /** A map from (imode, omode) to conv function types. */
  56 static set *conv_types;
  57
  58 /** A map from a method type to its lowered type. */
  59 static pmap *lowered_type;
  60
  61 /** The types for the binop and unop intrinsics. */
  62 static ir_type *binop_tp_u, *binop_tp_s, *unop_tp_u, *unop_tp_s, *shiftop_tp_u, *shiftop_tp_s, *tp_s, *tp_u;
  63
  64 /** the debug handle */
  65 DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL;)
  66
  67 /**
  68  * An entry in the (op, imode, omode) -> entity map.
  69  */
  70 typedef struct _op_mode_entry {
  71         const ir_op   *op;    /**< the op */
  72         const ir_mode *imode; /**< the input mode */
  73         const ir_mode *omode; /**< the output mode */
  74         entity        *ent;   /**< the associated entity of this (op, imode, omode) triple */
  75 } op_mode_entry_t;
  76
  77 /**
  78  * An entry in the (imode, omode) -> tp map.
  79  */
  80 typedef struct _conv_tp_entry {
  81         const ir_mode *imode; /**< the input mode */
  82         const ir_mode *omode; /**< the output mode */
  83         ir_type       *mtd;   /**< the associated method type of this (imode, omode) pair */
  84 } conv_tp_entry_t;
  85
  86 /**
  87  * Every double word node will be replaced,
  88  * we need some store to hold the replacement:
  89  */
  90 typedef struct _node_entry_t {
  91         ir_node *low_word;        /**< the low word */
  92         ir_node *high_word;       /**< the high word */
  93 } node_entry_t;
  94
  95 enum lower_flags {
  96         MUST_BE_LOWERED = 1,   /**< graph must be lowered */
  97         CF_CHANGED      = 2,   /**< control flow was changed */
  98 };
  99
 100 /**
 101  * The lower environment.
 102  */
 103 typedef struct _lower_env_t {
 104         node_entry_t **entries;       /**< entries per node */
 105         struct obstack obst;          /**< an obstack holding the temporary data */
 106         tarval   *tv_mode_bytes;      /**< a tarval containing the number of bytes in the lowered modes */
 107         tarval   *tv_mode_bits;       /**< a tarval containing the number of bits in the lowered modes */
 108         pdeq     *waitq;              /**< a wait queue of all nodes that must be handled later */
 109         pmap     *proj_2_block;       /**< a map from ProjX to its destination blocks */
 110         const lwrdw_param_t *params;  /**< transformation parameter */
 111         unsigned flags;               /**< some flags */
 112         int      n_entries;           /**< number of entries */
 113 } lower_env_t;
 114
 115 /**
 116  * Get a primitive mode for a mode.
 117  */
 118 static ir_type *get_primitive_type(ir_mode *mode) {
 119         pmap_entry *entry = pmap_find(prim_types, mode);
 120         ir_type *tp;
 121         char buf[64];
 122
 123         if (entry)
 124                 return entry->value;
 125
 126         snprintf(buf, sizeof(buf), "_prim_%s", get_mode_name(mode));
 127         tp = new_type_primitive(new_id_from_str(buf), mode);
 128
 129         pmap_insert(prim_types, mode, tp);
 130         return tp;
 131 }
 132
 133 /**
 134  * Create a method type for a Conv emulation from imode to omode.
 135  */
 136 static ir_type *get_conv_type(ir_mode *imode, ir_mode *omode, lower_env_t *env) {
 137         conv_tp_entry_t key, *entry;
 138         ir_type *mtd;
 139
 140         key.imode = imode;
 141         key.omode = omode;
 142         key.mtd   = NULL;
 143
 144         entry = set_insert(conv_types, &key, sizeof(key), HASH_PTR(imode) ^ HASH_PTR(omode));
 145         if (! entry->mtd) {
 146                 int n_param = 1, n_res = 1;
 147                 char buf[64];
 148
 149                 if (imode == env->params->high_signed || imode == env->params->high_unsigned)
 150                         n_param = 2;
 151                 if (omode == env->params->high_signed || omode == env->params->high_unsigned)
 152                         n_res = 2;
 153
 154                 /* create a new one */
 155                 snprintf(buf, sizeof(buf), "LConv%s%s", get_mode_name(imode), get_mode_name(omode));
 156                 mtd = new_type_method(new_id_from_str(buf), n_param, n_res);
 157
 158                 /* set param types and result types */
 159                 n_param = 0;
 160                 if (imode == env->params->high_signed) {
 161                         set_method_param_type(mtd, n_param++, tp_s);
 162                         set_method_param_type(mtd, n_param++, tp_s);
 163                 }
 164                 else if (imode == env->params->high_unsigned) {
 165                         set_method_param_type(mtd, n_param++, tp_u);
 166                         set_method_param_type(mtd, n_param++, tp_u);
 167                 }
 168                 else {
 169                         ir_type *tp = get_primitive_type(imode);
 170                         set_method_param_type(mtd, n_param++, tp);
 171                 }
 172
 173                 n_res = 0;
 174                 if (omode == env->params->high_signed) {
 175                         set_method_res_type(mtd, n_res++, tp_s);
 176                         set_method_res_type(mtd, n_res++, tp_s);
 177                 }
 178                 else if (omode == env->params->high_unsigned) {
 179                         set_method_res_type(mtd, n_res++, tp_u);
 180                         set_method_res_type(mtd, n_res++, tp_u);
 181                 }
 182                 else {
 183                         ir_type *tp = get_primitive_type(omode);
 184                         set_method_res_type(mtd, n_res++, tp);
 185                 }
 186
 187                 entry->mtd = mtd;
 188         }
 189         else
 190                 mtd = entry->mtd;
 191         return mtd;
 192 }
 193
 194 /**
 195  * Add an additional control flow input to a block.
 196  * Patch all Phi nodes. The new Phi inputs are copied from
 197  * old input number nr.
 198  */
 199 static void add_block_cf_input_nr(ir_node *block, int nr, ir_node *cf)
 200 {
 201         int i, arity = get_irn_arity(block);
 202         ir_node **in, *phi;
 203
 204         assert(nr < arity);
 205
 206         NEW_ARR_A(ir_node *, in, arity + 1);
 207         for (i = 0; i < arity; ++i)
 208                 in[i] = get_irn_n(block, i);
 209         in[i] = cf;
 210
 211         set_irn_in(block, i + 1, in);
 212
 213         for (phi = get_irn_link(block); phi; phi = get_irn_link(phi)) {
 214                 for (i = 0; i < arity; ++i)
 215                         in[i] = get_irn_n(phi, i);
 216                 in[i] = in[nr];
 217                 set_irn_in(phi, i + 1, in);
 218         }
 219 }
 220
 221 /**
 222  * Add an additional control flow input to a block.
 223  * Patch all Phi nodes. The new Phi inputs are copied from
 224  * old input from cf tmpl.
 225  */
 226 static void add_block_cf_input(ir_node *block, ir_node *tmpl, ir_node *cf)
 227 {
 228         int i, arity = get_irn_arity(block);
 229         int nr = 0;
 230
 231         for (i = 0; i < arity; ++i) {
 232                 if (get_irn_n(block, i) == tmpl) {
 233                         nr = i;
 234                         break;
 235                 }
 236         }
 237         assert(i < arity);
 238         add_block_cf_input_nr(block, nr, cf);
 239 }
 240
 241 /**
 242  * Return the "operational" mode of a Firm node.
 243  */
 244 static ir_mode *get_irn_op_mode(ir_node *node)
 245 {
 246         switch (get_irn_opcode(node)) {
 247         case iro_Load:
 248                 return get_Load_mode(node);
 249
 250         case iro_Store:
 251                 return get_irn_mode(get_Store_value(node));
 252
 253         case iro_DivMod:
 254                 return get_irn_mode(get_DivMod_left(node));
 255
 256         case iro_Div:
 257                 return get_irn_mode(get_Div_left(node));
 258
 259         case iro_Mod:
 260                 return get_irn_mode(get_Mod_left(node));
 261
 262         case iro_Cmp:
 263                 return get_irn_mode(get_Cmp_left(node));
 264
 265         default:
 266                 return get_irn_mode(node);
 267         }
 268 }
 269
 270 /**
 271  * walker, prepare the node links
 272  */
 273 static void prepare_links(ir_node *node, void *env)
 274 {
 275         lower_env_t  *lenv = env;
 276         ir_mode      *mode = get_irn_op_mode(node);
 277         node_entry_t *link;
 278         int          i;
 279
 280         if (mode == lenv->params->high_signed ||
 281                 mode == lenv->params->high_unsigned) {
 282                 /* ok, found a node that will be lowered */
 283                 link = obstack_alloc(&lenv->obst, sizeof(*link));
 284
 285                 memset(link, 0, sizeof(*link));
 286
 287                 lenv->entries[get_irn_idx(node)] = link;
 288                 lenv->flags |= MUST_BE_LOWERED;
 289         }
 290         else if (get_irn_op(node) == op_Conv) {
 291                 /* Conv nodes have two modes */
 292                 ir_node *pred = get_Conv_op(node);
 293                 mode = get_irn_mode(pred);
 294
 295                 if (mode == lenv->params->high_signed ||
 296                         mode == lenv->params->high_unsigned) {
 297                         /* must lower this node either */
 298                         link = obstack_alloc(&lenv->obst, sizeof(*link));
 299
 300                         memset(link, 0, sizeof(*link));
 301
 302                         lenv->entries[get_irn_idx(node)] = link;
 303                         lenv->flags |= MUST_BE_LOWERED;
 304                 }
 305                 return;
 306         }
 307
 308         if (is_Proj(node)) {
 309                 /* link all Proj nodes to its predecessor:
 310                    Note that Tuple Proj's and its Projs are linked either. */
 311                 ir_node *pred = get_Proj_pred(node);
 312
 313                 set_irn_link(node, get_irn_link(pred));
 314                 set_irn_link(pred, node);
 315         }
 316         else if (is_Phi(node)) {
 317                 /* link all Phi nodes to its block */
 318                 ir_node *block = get_nodes_block(node);
 319
 320                 set_irn_link(node, get_irn_link(block));
 321                 set_irn_link(block, node);
 322         }
 323         else if (is_Block(node)) {
 324                 /* fill the Proj -> Block map */
 325                 for (i = get_Block_n_cfgpreds(node) - 1; i >= 0; --i) {
 326                         ir_node *pred = get_Block_cfgpred(node, i);
 327
 328                         if (is_Proj(pred))
 329                                 pmap_insert(lenv->proj_2_block, pred, node);
 330                 }
 331         }
 332 }
 333
 334 /**
 335  * Translate a Constant: create two.
 336  */
 337 static void lower_Const(ir_node *node, ir_mode *mode, lower_env_t *env) {
 338         tarval   *tv, *tv_l, *tv_h;
 339         ir_node  *low, *high;
 340         dbg_info *dbg = get_irn_dbg_info(node);
 341         ir_node  *block = get_nodes_block(node);
 342         int      idx;
 343
 344         tv   = get_Const_tarval(node);
 345
 346         tv_l = tarval_convert_to(tv, mode);
 347         low  = new_rd_Const(dbg, current_ir_graph, block, mode, tv_l);
 348
 349         tv_h = tarval_convert_to(tarval_shrs(tv, env->tv_mode_bits), mode);
 350         high = new_rd_Const(dbg, current_ir_graph, block, mode, tv_h);
 351
 352         idx = get_irn_idx(node);
 353         assert(idx < env->n_entries);
 354         env->entries[idx]->low_word  = low;
 355         env->entries[idx]->high_word = high;
 356 }
 357
 358 /**
 359  * Translate a Load: create two.
 360  */
 361 static void lower_Load(ir_node *node, ir_mode *mode, lower_env_t *env) {
 362         ir_graph *irg = current_ir_graph;
 363         ir_node  *adr = get_Load_ptr(node);
 364         ir_node  *mem = get_Load_mem(node);
 365         ir_node  *low, *high, *proj;
 366         dbg_info *dbg;
 367         ir_node  *block = get_nodes_block(node);
 368         int      idx;
 369
 370         if (env->params->little_endian) {
 371                 low  = adr;
 372                 high = new_r_Add(irg, block, adr,
 373                         new_r_Const(irg, block, get_tarval_mode(env->tv_mode_bytes), env->tv_mode_bytes),
 374                         get_irn_mode(adr));
 375         }
 376         else {
 377                 low  = new_r_Add(irg, block, adr,
 378                         new_r_Const(irg, block, get_tarval_mode(env->tv_mode_bytes), env->tv_mode_bytes),
 379                         get_irn_mode(adr));
 380                 high = adr;
 381         }
 382
 383         /* create two loads */
 384         dbg  = get_irn_dbg_info(node);
 385         low  = new_rd_Load(dbg, irg, block, mem, low,  mode);
 386         proj = new_r_Proj(irg, block, low, mode_M, pn_Load_M);
 387         high = new_rd_Load(dbg, irg, block, proj, high, mode);
 388
 389         set_Load_volatility(low,  get_Load_volatility(node));
 390         set_Load_volatility(high, get_Load_volatility(node));
 391
 392         idx = get_irn_idx(node);
 393         assert(idx < env->n_entries);
 394         env->entries[idx]->low_word  = low;
 395         env->entries[idx]->high_word = high;
 396
 397         for (proj = get_irn_link(node); proj; proj = get_irn_link(proj)) {
 398                 idx = get_irn_idx(proj);
 399
 400                 switch (get_Proj_proj(proj)) {
 401                 case pn_Load_M:         /* Memory result. */
 402                         /* put it to the second one */
 403                         set_Proj_pred(proj, high);
 404                         break;
 405                 case pn_Load_X_except:  /* Execution result if exception occurred. */
 406                         /* put it to the first one */
 407                         set_Proj_pred(proj, low);
 408                         break;
 409                 case pn_Load_res:       /* Result of load operation. */
 410                         assert(idx < env->n_entries);
 411                         env->entries[idx]->low_word  = new_r_Proj(irg, block, low, mode, pn_Load_res);
 412                         env->entries[idx]->high_word = new_r_Proj(irg, block, high, mode, pn_Load_res);
 413                         break;
 414                 default:
 415                         assert(0 && "unexpected Proj number");
 416                 }
 417                 /* mark this proj: we have handled it already, otherwise we might fall into
 418                  * out new nodes. */
 419                 mark_irn_visited(proj);
 420         }
 421 }
 422
 423 /**
 424  * Translate a Store: create two.
 425  */
 426 static void lower_Store(ir_node *node, ir_mode *mode, lower_env_t *env) {
 427         ir_graph *irg;
 428         ir_node  *block, *adr, *mem;
 429         ir_node  *low, *high, *irn, *proj;
 430         dbg_info *dbg;
 431         int      idx;
 432         node_entry_t *entry;
 433
 434         irn = get_Store_value(node);
 435         entry = env->entries[get_irn_idx(irn)];
 436         assert(entry);
 437
 438         if (! entry->low_word) {
 439                 /* not ready yet, wait */
 440                 pdeq_putr(env->waitq, node);
 441                 return;
 442         }
 443
 444         irg = current_ir_graph;
 445         adr = get_Store_ptr(node);
 446         mem = get_Store_mem(node);
 447         block = get_nodes_block(node);
 448
 449         if (env->params->little_endian) {
 450                 low  = adr;
 451                 high = new_r_Add(irg, block, adr,
 452                         new_r_Const(irg, block, get_tarval_mode(env->tv_mode_bytes), env->tv_mode_bytes),
 453                         get_irn_mode(adr));
 454         }
 455         else {
 456                 low  = new_r_Add(irg, block, adr,
 457                         new_r_Const(irg, block, get_tarval_mode(env->tv_mode_bytes), env->tv_mode_bytes),
 458                         get_irn_mode(adr));
 459                 high = adr;
 460         }
 461
 462         /* create two Stores */
 463         dbg = get_irn_dbg_info(node);
 464         low  = new_rd_Store(dbg, irg, block, mem, low,  entry->low_word);
 465         proj = new_r_Proj(irg, block, low, mode_M, pn_Store_M);
 466         high = new_rd_Store(dbg, irg, block, proj, high, entry->high_word);
 467
 468         set_Store_volatility(low,  get_Store_volatility(node));
 469         set_Store_volatility(high, get_Store_volatility(node));
 470
 471         idx = get_irn_idx(node);
 472         assert(idx < env->n_entries);
 473         env->entries[idx]->low_word  = low;
 474         env->entries[idx]->high_word = high;
 475
 476         for (proj = get_irn_link(node); proj; proj = get_irn_link(proj)) {
 477                 idx = get_irn_idx(proj);
 478
 479                 switch (get_Proj_proj(proj)) {
 480                 case pn_Store_M:         /* Memory result. */
 481                         /* put it to the second one */
 482                         set_Proj_pred(proj, high);
 483                         break;
 484                 case pn_Store_X_except:  /* Execution result if exception occurred. */
 485                         /* put it to the first one */
 486                         set_Proj_pred(proj, low);
 487                         break;
 488                 default:
 489                         assert(0 && "unexpected Proj number");
 490                 }
 491                 /* mark this proj: we have handled it already, otherwise we might fall into
 492                  * out new nodes. */
 493                 mark_irn_visited(proj);
 494         }
 495 }
 496
 497 /**
 498  * Return a node containing the address of the intrinsic emulation function.
 499  *
 500  * @param method  the method type of the emulation function
 501  * @param op      the emulated ir_op
 502  * @param imode   the input mode of the emulated opcode
 503  * @param omode   the output mode of the emulated opcode
 504  * @param block   where the new mode is created
 505  * @param env     the lower environment
 506  */
 507 static ir_node *get_intrinsic_address(ir_type *method, ir_op *op,
 508                                       ir_mode *imode, ir_mode *omode,
 509                                       ir_node *block, lower_env_t *env) {
 510         symconst_symbol sym;
 511         entity *ent;
 512         op_mode_entry_t key, *entry;
 513
 514         key.op    = op;
 515         key.imode = imode;
 516         key.omode = omode;
 517         key.ent   = NULL;
 518
 519         entry = set_insert(intrinsic_fkt, &key, sizeof(key),
 520                                 HASH_PTR(op) ^ HASH_PTR(imode) ^ (HASH_PTR(omode) << 8));
 521         if (! entry->ent) {
 522                 /* create a new one */
 523                 ent = env->params->create_intrinsic(method, op, imode, omode, env->params->ctx);
 524
 525                 assert(ent && "Intrinsic creator must return an entity");
 526                 entry->ent = ent;
 527         }
 528         else
 529                 ent = entry->ent;
 530
 531         sym.entity_p = ent;
 532         return new_r_SymConst(current_ir_graph, block, sym, symconst_addr_ent);
 533 }
 534
 535 /**
 536  * Translate a Div.
 537  *
 538  * Create an intrinsic Call.
 539  */
 540 static void lower_Div(ir_node *node, ir_mode *mode, lower_env_t *env) {
 541         ir_node  *block, *irn, *call, *proj;
 542         ir_node  *in[4];
 543         ir_mode  *opmode;
 544         dbg_info *dbg;
 545         ir_type  *mtp;
 546         int      idx;
 547         node_entry_t *entry;
 548
 549         irn   = get_Div_left(node);
 550         entry = env->entries[get_irn_idx(irn)];
 551         assert(entry);
 552
 553         if (! entry->low_word) {
 554                 /* not ready yet, wait */
 555                 pdeq_putr(env->waitq, node);
 556                 return;
 557         }
 558
 559         in[0] = entry->low_word;
 560         in[1] = entry->high_word;
 561
 562         irn   = get_Div_right(node);
 563         entry = env->entries[get_irn_idx(irn)];
 564         assert(entry);
 565
 566         if (! entry->low_word) {
 567                 /* not ready yet, wait */
 568                 pdeq_putr(env->waitq, node);
 569                 return;
 570         }
 571
 572         in[2] = entry->low_word;
 573         in[3] = entry->high_word;
 574
 575         dbg = get_irn_dbg_info(node);
 576         block = get_nodes_block(node);
 577
 578         mtp = mode_is_signed(mode) ? binop_tp_s : binop_tp_u;
 579         opmode = get_irn_op_mode(node);
 580         irn = get_intrinsic_address(mtp, get_irn_op(node), opmode, opmode, block, env);
 581         call = new_rd_Call(dbg, current_ir_graph, block, get_Div_mem(node),
 582                 irn, 4, in, mtp);
 583         set_irn_pinned(call, get_irn_pinned(node));
 584         irn = new_r_Proj(current_ir_graph, block, call, mode_T, pn_Call_T_result);
 585
 586         for (proj = get_irn_link(node); proj; proj = get_irn_link(proj)) {
 587                 switch (get_Proj_proj(proj)) {
 588                 case pn_Div_M:         /* Memory result. */
 589                         /* reroute to the call */
 590                         set_Proj_pred(proj, call);
 591                         set_Proj_proj(proj, pn_Call_M_except);
 592                         break;
 593                 case pn_Div_X_except:  /* Execution result if exception occurred. */
 594                         /* reroute to the call */
 595                         set_Proj_pred(proj, call);
 596                         set_Proj_proj(proj, pn_Call_X_except);
 597                         break;
 598                 case pn_Div_res:       /* Result of computation. */
 599                         idx = get_irn_idx(proj);
 600                         assert(idx < env->n_entries);
 601                         env->entries[idx]->low_word  = new_r_Proj(current_ir_graph, block, irn, mode, 0);
 602                         env->entries[idx]->high_word = new_r_Proj(current_ir_graph, block, irn, mode, 1);
 603                         break;
 604                 default:
 605                         assert(0 && "unexpected Proj number");
 606                 }
 607                 /* mark this proj: we have handled it already, otherwise we might fall into
 608                  * out new nodes. */
 609                 mark_irn_visited(proj);
 610         }
 611 }
 612
 613 /**
 614  * Translate a Mod.
 615  *
 616  * Create an intrinsic Call.
 617  */
 618 static void lower_Mod(ir_node *node, ir_mode *mode, lower_env_t *env) {
 619         ir_node  *block, *proj, *irn, *call;
 620         ir_node  *in[4];
 621         ir_mode  *opmode;
 622         dbg_info *dbg;
 623         ir_type  *mtp;
 624         int      idx;
 625         node_entry_t *entry;
 626
 627         irn   = get_Mod_left(node);
 628         entry = env->entries[get_irn_idx(irn)];
 629         assert(entry);
 630
 631         if (! entry->low_word) {
 632                 /* not ready yet, wait */
 633                 pdeq_putr(env->waitq, node);
 634                 return;
 635         }
 636
 637         in[0] = entry->low_word;
 638         in[1] = entry->high_word;
 639
 640         irn   = get_Mod_right(node);
 641         entry = env->entries[get_irn_idx(irn)];
 642         assert(entry);
 643
 644         if (! entry->low_word) {
 645                 /* not ready yet, wait */
 646                 pdeq_putr(env->waitq, node);
 647                 return;
 648         }
 649
 650         in[2] = entry->low_word;
 651         in[3] = entry->high_word;
 652
 653         dbg = get_irn_dbg_info(node);
 654         block = get_nodes_block(node);
 655
 656         mtp = mode_is_signed(mode) ? binop_tp_s : binop_tp_u;
 657         opmode = get_irn_op_mode(node);
 658         irn = get_intrinsic_address(mtp, get_irn_op(node), opmode, opmode, block, env);
 659         call = new_rd_Call(dbg, current_ir_graph, block, get_Mod_mem(node),
 660                 irn, 4, in, mtp);
 661         set_irn_pinned(call, get_irn_pinned(node));
 662         irn = new_r_Proj(current_ir_graph, block, call, mode_T, pn_Call_T_result);
 663
 664         for (proj = get_irn_link(node); proj; proj = get_irn_link(proj)) {
 665                 switch (get_Proj_proj(proj)) {
 666                 case pn_Mod_M:         /* Memory result. */
 667                         /* reroute to the call */
 668                         set_Proj_pred(proj, call);
 669                         set_Proj_proj(proj, pn_Call_M_except);
 670                         break;
 671                 case pn_Mod_X_except:  /* Execution result if exception occurred. */
 672                         /* reroute to the call */
 673                         set_Proj_pred(proj, call);
 674                         set_Proj_proj(proj, pn_Call_X_except);
 675                         break;
 676                 case pn_Mod_res:       /* Result of computation. */
 677                         idx = get_irn_idx(proj);
 678                         assert(idx < env->n_entries);
 679                         env->entries[idx]->low_word  = new_r_Proj(current_ir_graph, block, irn, mode, 0);
 680                         env->entries[idx]->high_word = new_r_Proj(current_ir_graph, block, irn, mode, 1);
 681                         break;
 682                 default:
 683                         assert(0 && "unexpected Proj number");
 684                 }
 685                 /* mark this proj: we have handled it already, otherwise we might fall into
 686                  * out new nodes. */
 687                 mark_irn_visited(proj);
 688         }
 689 }
 690
 691 /**
 692  * Translate a DivMod.
 693  *
 694  * Create two intrinsic Calls.
 695  */
 696 static void lower_DivMod(ir_node *node, ir_mode *mode, lower_env_t *env) {
 697         ir_node  *block, *proj, *irn, *mem, *callDiv, *callMod, *resDiv, *resMod;
 698         ir_node  *in[4];
 699         ir_mode  *opmode;
 700         dbg_info *dbg;
 701         ir_type  *mtp;
 702         int      idx;
 703         node_entry_t *entry;
 704         unsigned flags = 0;
 705
 706         /* check if both results are needed */
 707         for (proj = get_irn_link(node); proj; proj = get_irn_link(proj)) {
 708                 switch (get_Proj_proj(proj)) {
 709                 case pn_DivMod_res_div: flags |= 1; break;
 710                 case pn_DivMod_res_mod: flags |= 2; break;
 711                 default: break;
 712                 }
 713         }
 714
 715         irn   = get_DivMod_left(node);
 716         entry = env->entries[get_irn_idx(irn)];
 717         assert(entry);
 718
 719         if (! entry->low_word) {
 720                 /* not ready yet, wait */
 721                 pdeq_putr(env->waitq, node);
 722                 return;
 723         }
 724
 725         in[0] = entry->low_word;
 726         in[1] = entry->high_word;
 727
 728         irn   = get_DivMod_right(node);
 729         entry = env->entries[get_irn_idx(irn)];
 730         assert(entry);
 731
 732         if (! entry->low_word) {
 733                 /* not ready yet, wait */
 734                 pdeq_putr(env->waitq, node);
 735                 return;
 736         }
 737
 738         in[2] = entry->low_word;
 739         in[3] = entry->high_word;
 740
 741         dbg = get_irn_dbg_info(node);
 742         block = get_nodes_block(node);
 743
 744         mem = get_DivMod_mem(node);
 745
 746         callDiv = callMod = NULL;
 747         mtp = mode_is_signed(mode) ? binop_tp_s : binop_tp_u;
 748         if (flags & 1) {
 749                 opmode = get_irn_op_mode(node);
 750                 irn = get_intrinsic_address(mtp, op_Div, opmode, opmode, block, env);
 751                 callDiv = new_rd_Call(dbg, current_ir_graph, block, mem,
 752                         irn, 4, in, mtp);
 753                 set_irn_pinned(callDiv, get_irn_pinned(node));
 754                 resDiv = new_r_Proj(current_ir_graph, block, callDiv, mode_T, pn_Call_T_result);
 755         }
 756         if (flags & 2) {
 757                 if (flags & 1)
 758                         mem = new_r_Proj(current_ir_graph, block, callDiv, mode_M, pn_Call_M);
 759                 opmode = get_irn_op_mode(node);
 760                 irn = get_intrinsic_address(mtp, op_Mod, opmode, opmode, block, env);
 761                 callMod = new_rd_Call(dbg, current_ir_graph, block, mem,
 762                         irn, 4, in, mtp);
 763                 set_irn_pinned(callMod, get_irn_pinned(node));
 764                 resMod = new_r_Proj(current_ir_graph, block, callMod, mode_T, pn_Call_T_result);
 765         }
 766
 767         for (proj = get_irn_link(node); proj; proj = get_irn_link(proj)) {
 768                 switch (get_Proj_proj(proj)) {
 769                 case pn_DivMod_M:         /* Memory result. */
 770                         /* reroute to the first call */
 771                         set_Proj_pred(proj, callDiv ? callDiv : (callMod ? callMod : mem));
 772                         set_Proj_proj(proj, pn_Call_M_except);
 773                         break;
 774                 case pn_DivMod_X_except:  /* Execution result if exception occurred. */
 775                         /* reroute to the first call */
 776                         set_Proj_pred(proj, callDiv ? callDiv : (callMod ? callMod : mem));
 777                         set_Proj_proj(proj, pn_Call_X_except);
 778                         break;
 779                 case pn_DivMod_res_div:   /* Result of Div. */
 780                         idx = get_irn_idx(proj);
 781                         assert(idx < env->n_entries);
 782                         env->entries[idx]->low_word  = new_r_Proj(current_ir_graph, block, resDiv, mode, 0);
 783                         env->entries[idx]->high_word = new_r_Proj(current_ir_graph, block, resDiv, mode, 1);
 784                         break;
 785                 case pn_DivMod_res_mod:   /* Result of Mod. */
 786                         idx = get_irn_idx(proj);
 787                         env->entries[idx]->low_word  = new_r_Proj(current_ir_graph, block, resMod, mode, 0);
 788                         env->entries[idx]->high_word = new_r_Proj(current_ir_graph, block, resMod, mode, 1);
 789                         break;
 790                 default:
 791                         assert(0 && "unexpected Proj number");
 792                 }
 793                 /* mark this proj: we have handled it already, otherwise we might fall into
 794                  * out new nodes. */
 795                 mark_irn_visited(proj);
 796         }
 797 }
 798
 799 /**
 800  * Translate a Binop.
 801  *
 802  * Create an intrinsic Call.
 803  */
 804 static void lower_Binop(ir_node *node, ir_mode *mode, lower_env_t *env) {
 805         ir_node  *block, *irn;
 806         ir_node  *in[4];
 807         dbg_info *dbg;
 808         ir_type  *mtp;
 809         int      idx;
 810         node_entry_t *entry;
 811
 812         irn   = get_binop_left(node);
 813         entry = env->entries[get_irn_idx(irn)];
 814         assert(entry);
 815
 816         if (! entry->low_word) {
 817                 /* not ready yet, wait */
 818                 pdeq_putr(env->waitq, node);
 819                 return;
 820         }
 821
 822         in[0] = entry->low_word;
 823         in[1] = entry->high_word;
 824
 825         irn   = get_binop_right(node);
 826         entry = env->entries[get_irn_idx(irn)];
 827         assert(entry);
 828
 829         if (! entry->low_word) {
 830                 /* not ready yet, wait */
 831                 pdeq_putr(env->waitq, node);
 832                 return;
 833         }
 834
 835         in[2] = entry->low_word;
 836         in[3] = entry->high_word;
 837
 838         dbg = get_irn_dbg_info(node);
 839         block = get_nodes_block(node);
 840
 841         mtp = mode_is_signed(mode) ? binop_tp_s : binop_tp_u;
 842         irn = get_intrinsic_address(mtp, get_irn_op(node), mode, mode, block, env);
 843         irn = new_rd_Call(dbg, current_ir_graph, block, get_irg_no_mem(current_ir_graph),
 844                 irn, 4, in, mtp);
 845         set_irn_pinned(irn, get_irn_pinned(node));
 846         irn = new_r_Proj(current_ir_graph, block, irn, mode_T, pn_Call_T_result);
 847
 848         idx = get_irn_idx(node);
 849         assert(idx < env->n_entries);
 850         env->entries[idx]->low_word  = new_r_Proj(current_ir_graph, block, irn, mode, 0);
 851         env->entries[idx]->high_word = new_r_Proj(current_ir_graph, block, irn, mode, 1);
 852 }
 853
 854 /**
 855  * Translate a Shiftop.
 856  *
 857  * Create an intrinsic Call.
 858  */
 859 static void lower_Shiftop(ir_node *node, ir_mode *mode, lower_env_t *env) {
 860         ir_node  *block, *irn;
 861         ir_node  *in[3];
 862         dbg_info *dbg;
 863         ir_type  *mtp;
 864         int      idx;
 865         node_entry_t *entry;
 866
 867         irn   = get_binop_left(node);
 868         entry = env->entries[get_irn_idx(irn)];
 869         assert(entry);
 870
 871         if (! entry->low_word) {
 872                 /* not ready yet, wait */
 873                 pdeq_putr(env->waitq, node);
 874                 return;
 875         }
 876
 877         in[0] = entry->low_word;
 878         in[1] = entry->high_word;
 879
 880         /* The shift count is always mode_Iu in firm, so there is no need for lowering */
 881         in[2] = get_binop_right(node);
 882
 883         dbg   = get_irn_dbg_info(node);
 884         block = get_nodes_block(node);
 885
 886         mtp = mode_is_signed(mode) ? shiftop_tp_s : shiftop_tp_u;
 887         irn = get_intrinsic_address(mtp, get_irn_op(node), mode, mode, block, env);
 888         irn = new_rd_Call(dbg, current_ir_graph, block, get_irg_no_mem(current_ir_graph),
 889                 irn, 3, in, mtp);
 890         set_irn_pinned(irn, get_irn_pinned(node));
 891         irn = new_r_Proj(current_ir_graph, block, irn, mode_T, pn_Call_T_result);
 892
 893         idx = get_irn_idx(node);
 894         assert(idx < env->n_entries);
 895         env->entries[idx]->low_word  = new_r_Proj(current_ir_graph, block, irn, mode, 0);
 896         env->entries[idx]->high_word = new_r_Proj(current_ir_graph, block, irn, mode, 1);
 897 }
 898
 899 /**
 900  * Translate a Shr and handle special cases.
 901  */
 902 static void lower_Shr(ir_node *node, ir_mode *mode, lower_env_t *env) {
 903         ir_node *right = get_Shr_right(node);
 904
 905         if (get_mode_arithmetic(mode) == irma_twos_complement && is_Const(right)) {
 906                 tarval *tv = get_Const_tarval(right);
 907
 908                 if (tarval_is_long(tv) &&
 909                         get_tarval_long(tv) >= get_mode_size_bits(mode)) {
 910                         ir_node *block = get_nodes_block(node);
 911                         ir_node *left = get_Shr_left(node);
 912                         ir_node *c;
 913                         long shf_cnt = get_tarval_long(tv) - get_mode_size_bits(mode);
 914                         int idx = get_irn_idx(left);
 915
 916                         left = env->entries[idx]->high_word;
 917                         idx = get_irn_idx(node);
 918
 919                         if (shf_cnt > 0) {
 920                                 c = new_r_Const_long(current_ir_graph, block, mode_Iu, shf_cnt);
 921                                 env->entries[idx]->low_word = new_r_Shr(current_ir_graph, block, left, c, mode);
 922                         }
 923                         else
 924                                 env->entries[idx]->low_word = left;
 925                         env->entries[idx]->high_word = new_r_Const(current_ir_graph, block, mode, get_mode_null(mode));
 926
 927                         return;
 928                 }
 929         }
 930         lower_Shiftop(node, mode, env);
 931 }
 932
 933 /**
 934  * Translate a Shl and handle special cases.
 935  */
 936 static void lower_Shl(ir_node *node, ir_mode *mode, lower_env_t *env) {
 937         ir_node *right = get_Shl_right(node);
 938
 939         if (get_mode_arithmetic(mode) == irma_twos_complement && is_Const(right)) {
 940                 tarval *tv = get_Const_tarval(right);
 941
 942                 if (tarval_is_long(tv) &&
 943                         get_tarval_long(tv) >= get_mode_size_bits(mode)) {
 944                         ir_node *block = get_nodes_block(node);
 945                         ir_node *left = get_Shl_left(node);
 946                         ir_node *c;
 947                         long shf_cnt = get_tarval_long(tv) - get_mode_size_bits(mode);
 948                         int idx = get_irn_idx(left);
 949
 950                         left = env->entries[idx]->low_word;
 951                         idx = get_irn_idx(node);
 952
 953                         if (shf_cnt > 0) {
 954                                 c = new_r_Const_long(current_ir_graph, block, mode_Iu, shf_cnt);
 955                                 env->entries[idx]->high_word = new_r_Shl(current_ir_graph, block, left, c, mode);
 956                         }
 957                         else
 958                                 env->entries[idx]->high_word = left;
 959                         env->entries[idx]->low_word  = new_r_Const(current_ir_graph, block, mode, get_mode_null(mode));
 960
 961                         return;
 962                 }
 963         }
 964         lower_Shiftop(node, mode, env);
 965 }
 966
 967 /**
 968  * Translate a Shrs and handle special cases.
 969  */
 970 static void lower_Shrs(ir_node *node, ir_mode *mode, lower_env_t *env) {
 971         ir_node *right = get_Shrs_right(node);
 972
 973         if (get_mode_arithmetic(mode) == irma_twos_complement && is_Const(right)) {
 974                 tarval *tv = get_Const_tarval(right);
 975
 976                 if (tarval_is_long(tv) &&
 977                         get_tarval_long(tv) >= get_mode_size_bits(mode)) {
 978                         ir_node *block = get_nodes_block(node);
 979                         ir_node *left = get_Shrs_left(node);
 980                         long shf_cnt = get_tarval_long(tv) - get_mode_size_bits(mode);
 981                         ir_node *c;
 982                         int idx = get_irn_idx(left);
 983
 984                         left = env->entries[idx]->high_word;
 985                         idx = get_irn_idx(node);
 986
 987                         if (shf_cnt > 0) {
 988                                 c = new_r_Const_long(current_ir_graph, block, mode_Iu, shf_cnt);
 989                                 env->entries[idx]->low_word = new_r_Shrs(current_ir_graph, block, left, c, mode);
 990                         }
 991                         else
 992                                 env->entries[idx]->low_word = left;
 993
 994                         c = new_r_Const_long(current_ir_graph, block, mode_Iu, get_mode_size_bits(mode) - 1);
 995                         env->entries[idx]->high_word = new_r_Shrs(current_ir_graph, block, left, c, mode);
 996
 997                         return;
 998                 }
 999         }
1000         lower_Shiftop(node, mode, env);
1001 }
1002
1003 /**
1004  * Translate a Rot and handle special cases.
1005  */
1006 static void lower_Rot(ir_node *node, ir_mode *mode, lower_env_t *env) {
1007         ir_node *right = get_Rot_right(node);
1008
1009         if (get_mode_arithmetic(mode) == irma_twos_complement && is_Const(right)) {
1010                 tarval *tv = get_Const_tarval(right);
1011
1012                 if (tarval_is_long(tv) &&
1013                         get_tarval_long(tv) == get_mode_size_bits(mode)) {
1014                         ir_node *block = get_nodes_block(node);
1015                         ir_node *left = get_Rot_left(node);
1016                         ir_node *h, *l;
1017                         int idx = get_irn_idx(left);
1018
1019                         l = env->entries[idx]->low_word;
1020                         h = env->entries[idx]->high_word;
1021                         idx = get_irn_idx(node);
1022
1023                         env->entries[idx]->low_word  = h;
1024                         env->entries[idx]->high_word = l;
1025
1026                         return;
1027                 }
1028         }
1029         lower_Shiftop(node, mode, env);
1030 }
1031 /**
1032  * Translate an Unop.
1033  *
1034  * Create an intrinsic Call.
1035  */
1036 static void lower_Unop(ir_node *node, ir_mode *mode, lower_env_t *env) {
1037         ir_node  *block, *irn;
1038         ir_node  *in[2];
1039         dbg_info *dbg;
1040         ir_type  *mtp;
1041         int      idx;
1042         node_entry_t *entry;
1043
1044         irn   = get_unop_op(node);
1045         entry = env->entries[get_irn_idx(irn)];
1046         assert(entry);
1047
1048         if (! entry->low_word) {
1049                 /* not ready yet, wait */
1050                 pdeq_putr(env->waitq, node);
1051                 return;
1052         }
1053
1054         in[0] = entry->low_word;
1055         in[1] = entry->high_word;
1056
1057         dbg = get_irn_dbg_info(node);
1058         block = get_nodes_block(node);
1059
1060         mtp = mode_is_signed(mode) ? unop_tp_s : unop_tp_u;
1061         irn = get_intrinsic_address(mtp, get_irn_op(node), mode, mode, block, env);
1062         irn = new_rd_Call(dbg, current_ir_graph, block, get_irg_no_mem(current_ir_graph),
1063                 irn, 2, in, mtp);
1064         set_irn_pinned(irn, get_irn_pinned(node));
1065         irn = new_r_Proj(current_ir_graph, block, irn, mode_T, pn_Call_T_result);
1066
1067         idx = get_irn_idx(node);
1068         assert(idx < env->n_entries);
1069         env->entries[idx]->low_word  = new_r_Proj(current_ir_graph, block, irn, mode, 0);
1070         env->entries[idx]->high_word = new_r_Proj(current_ir_graph, block, irn, mode, 1);
1071 }
1072
1073 /**
1074  * Translate a logical Binop.
1075  *
1076  * Create two logical Binops.
1077  */
1078 static void lower_Binop_logical(ir_node *node, ir_mode *mode, lower_env_t *env,
1079                                                                 ir_node *(*constr_rd)(dbg_info *db, ir_graph *irg, ir_node *block, ir_node *op1, ir_node *op2, ir_mode *mode) ) {
1080         ir_node  *block, *irn;
1081         ir_node  *lop_l, *lop_h, *rop_l, *rop_h;
1082         dbg_info *dbg;
1083         int      idx;
1084         node_entry_t *entry;
1085
1086         irn   = get_binop_left(node);
1087         entry = env->entries[get_irn_idx(irn)];
1088         assert(entry);
1089
1090         if (! entry->low_word) {
1091                 /* not ready yet, wait */
1092                 pdeq_putr(env->waitq, node);
1093                 return;
1094         }
1095
1096         lop_l = entry->low_word;
1097         lop_h = entry->high_word;
1098
1099         irn   = get_binop_right(node);
1100         entry = env->entries[get_irn_idx(irn)];
1101         assert(entry);
1102
1103         if (! entry->low_word) {
1104                 /* not ready yet, wait */
1105                 pdeq_putr(env->waitq, node);
1106                 return;
1107         }
1108
1109         rop_l = entry->low_word;
1110         rop_h = entry->high_word;
1111
1112         dbg = get_irn_dbg_info(node);
1113         block = get_nodes_block(node);
1114
1115         idx = get_irn_idx(node);
1116         assert(idx < env->n_entries);
1117         env->entries[idx]->low_word  = constr_rd(dbg, current_ir_graph, block, lop_l, rop_l, mode);
1118         env->entries[idx]->high_word = constr_rd(dbg, current_ir_graph, block, lop_h, rop_h, mode);
1119 }
1120
1121 /** create a logical operation tranformation */
1122 #define lower_logical(op)                                                \
1123 static void lower_##op(ir_node *node, ir_mode *mode, lower_env_t *env) { \
1124         lower_Binop_logical(node, mode, env, new_rd_##op);                   \
1125 }
1126
1127 lower_logical(And)
1128 lower_logical(Or)
1129 lower_logical(Eor)
1130
1131 /**
1132  * Translate a Not.
1133  *
1134  * Create two logical Nots.
1135  */
1136 static void lower_Not(ir_node *node, ir_mode *mode, lower_env_t *env) {
1137         ir_node  *block, *irn;
1138         ir_node  *op_l, *op_h;
1139         dbg_info *dbg;
1140         int      idx;
1141         node_entry_t *entry;
1142
1143         irn   = get_Not_op(node);
1144         entry = env->entries[get_irn_idx(irn)];
1145         assert(entry);
1146
1147         if (! entry->low_word) {
1148                 /* not ready yet, wait */
1149                 pdeq_putr(env->waitq, node);
1150                 return;
1151         }
1152
1153         op_l = entry->low_word;
1154         op_h = entry->high_word;
1155
1156         dbg = get_irn_dbg_info(node);
1157         block = get_nodes_block(node);
1158
1159         idx = get_irn_idx(node);
1160         assert(idx < env->n_entries);
1161         env->entries[idx]->low_word  = new_rd_Not(dbg, current_ir_graph, block, op_l, mode);
1162         env->entries[idx]->high_word = new_rd_Not(dbg, current_ir_graph, block, op_h, mode);
1163 }
1164
1165 /**
1166  * Translate a Cond.
1167  */
1168 static void lower_Cond(ir_node *node, ir_mode *mode, lower_env_t *env) {
1169         ir_node *cmp, *left, *right, *block;
1170         ir_node *sel = get_Cond_selector(node);
1171         ir_mode *m = get_irn_mode(sel);
1172         int     idx;
1173
1174         if (m == mode_b) {
1175                 node_entry_t *lentry, *rentry;
1176                 ir_node  *proj, *projT = NULL, *projF = NULL;
1177                 ir_node  *new_bl, *cmpH, *cmpL, *irn;
1178                 ir_node  *projHF, *projHT;
1179                 ir_node  *dst_blk;
1180                 ir_graph *irg;
1181                 pn_Cmp   pnc;
1182                 dbg_info *dbg;
1183
1184                 cmp   = get_Proj_pred(sel);
1185                 left  = get_Cmp_left(cmp);
1186                 idx   = get_irn_idx(left);
1187                 lentry = env->entries[idx];
1188
1189                 if (! lentry)
1190                         /* a normal Cmp */
1191                         return;
1192
1193                 right = get_Cmp_right(cmp);
1194                 idx   = get_irn_idx(right);
1195                 rentry = env->entries[idx];
1196                 assert(rentry);
1197
1198                 if (! lentry->low_word || !rentry->low_word) {
1199                         /* not yet ready */
1200                         pdeq_putr(env->waitq, node);
1201                         return;
1202                 }
1203
1204                 /* all right, build the code */
1205                 for (proj = get_irn_link(node); proj; proj = get_irn_link(proj)) {
1206                         long proj_nr = get_Proj_proj(proj);
1207
1208                         if (proj_nr == pn_Cond_true) {
1209                                 assert(projT == NULL && "more than one Proj(true)");
1210                                 projT = proj;
1211                         }
1212                         else {
1213                                 assert(proj_nr == pn_Cond_false);
1214                                 assert(projF == NULL && "more than one Proj(false)");
1215                                 projF = proj;
1216                         }
1217                         mark_irn_visited(proj);
1218                 }
1219                 assert(projT && projF);
1220
1221                 /* create a new high compare */
1222                 block = get_nodes_block(cmp);
1223                 dbg   = get_irn_dbg_info(cmp);
1224                 irg   = current_ir_graph;
1225
1226                 cmpH = new_rd_Cmp(dbg, irg, block, lentry->high_word, rentry->high_word);
1227
1228                 pnc = get_Proj_proj(sel);
1229                 if (pnc == pn_Cmp_Eq) {
1230                         /* simple case:a == b <==> a_h == b_h && a_l == b_l */
1231                         pmap_entry *entry = pmap_find(env->proj_2_block, projF);
1232
1233                         assert(entry);
1234                         dst_blk = entry->value;
1235
1236                         irn = new_r_Proj(irg, block, cmpH, mode_b, pn_Cmp_Eq);
1237                         dbg = get_irn_dbg_info(node);
1238                         irn = new_rd_Cond(dbg, irg, block, irn);
1239
1240                         projHF = new_r_Proj(irg, block, irn, mode_X, pn_Cond_false);
1241                         mark_irn_visited(projHF);
1242                         exchange(projF, projHF);
1243
1244                         projHT = new_r_Proj(irg, block, irn, mode_X, pn_Cond_true);
1245                         mark_irn_visited(projHT);
1246
1247                         new_bl = new_r_Block(irg, 1, &projHT);
1248
1249                         dbg   = get_irn_dbg_info(cmp);
1250                         cmpL = new_rd_Cmp(dbg, irg, new_bl, lentry->low_word, rentry->low_word);
1251                         irn = new_r_Proj(irg, new_bl, cmpL, mode_b, pn_Cmp_Eq);
1252                         dbg = get_irn_dbg_info(node);
1253                         irn = new_rd_Cond(dbg, irg, new_bl, irn);
1254
1255                         proj = new_r_Proj(irg, new_bl, irn, mode_X, pn_Cond_false);
1256                         mark_irn_visited(proj);
1257                         add_block_cf_input(dst_blk, projHF, proj);
1258
1259                         proj = new_r_Proj(irg, new_bl, irn, mode_X, pn_Cond_true);
1260                         mark_irn_visited(proj);
1261                         exchange(projT, proj);
1262                 }
1263                 else if (pnc == pn_Cmp_Lg) {
1264                         /* simple case:a != b <==> a_h != b_h || a_l != b_l */
1265                         pmap_entry *entry = pmap_find(env->proj_2_block, projT);
1266
1267                         assert(entry);
1268                         dst_blk = entry->value;
1269
1270                         irn = new_r_Proj(irg, block, cmpH, mode_b, pn_Cmp_Lg);
1271                         dbg = get_irn_dbg_info(node);
1272                         irn = new_rd_Cond(dbg, irg, block, irn);
1273
1274                         projHT = new_r_Proj(irg, block, irn, mode_X, pn_Cond_true);
1275                         mark_irn_visited(projHT);
1276                         exchange(projT, projHT);
1277
1278                         projHF = new_r_Proj(irg, block, irn, mode_X, pn_Cond_false);
1279                         mark_irn_visited(projHF);
1280
1281                         new_bl = new_r_Block(irg, 1, &projHF);
1282
1283                         dbg   = get_irn_dbg_info(cmp);
1284                         cmpL = new_rd_Cmp(dbg, irg, new_bl, lentry->low_word, rentry->low_word);
1285                         irn = new_r_Proj(irg, new_bl, cmpL, mode_b, pn_Cmp_Lg);
1286                         dbg = get_irn_dbg_info(node);
1287                         irn = new_rd_Cond(dbg, irg, new_bl, irn);
1288
1289                         proj = new_r_Proj(irg, new_bl, irn, mode_X, pn_Cond_true);
1290                         mark_irn_visited(proj);
1291                         add_block_cf_input(dst_blk, projHT, proj);
1292
1293                         proj = new_r_Proj(irg, new_bl, irn, mode_X, pn_Cond_false);
1294                         mark_irn_visited(proj);
1295                         exchange(projF, proj);
1296                 }
1297                 else {
1298                         /* a rel b <==> a_h rel b_h || (a_h == b_h && a_l rel b_l) */
1299                         ir_node *dstT, *dstF, *newbl_eq, *newbl_l;
1300                         pmap_entry *entry;
1301
1302                         entry = pmap_find(env->proj_2_block, projT);
1303                         assert(entry);
1304                         dstT = entry->value;
1305
1306                         entry = pmap_find(env->proj_2_block, projF);
1307                         assert(entry);
1308                         dstF = entry->value;
1309
1310                         irn = new_r_Proj(irg, block, cmpH, mode_b, pnc);
1311                         dbg = get_irn_dbg_info(node);
1312                         irn = new_rd_Cond(dbg, irg, block, irn);
1313
1314                         projHT = new_r_Proj(irg, block, irn, mode_X, pn_Cond_true);
1315                         mark_irn_visited(projHT);
1316                         exchange(projT, projHT);
1317                         projT = projHT;
1318
1319                         projHF = new_r_Proj(irg, block, irn, mode_X, pn_Cond_false);
1320                         mark_irn_visited(projHF);
1321
1322                         newbl_eq = new_r_Block(irg, 1, &projHF);
1323
1324                         irn = new_r_Proj(irg, newbl_eq, cmpH, mode_b, pn_Cmp_Eq);
1325                         irn = new_rd_Cond(dbg, irg, newbl_eq, irn);
1326
1327                         proj = new_r_Proj(irg, newbl_eq, irn, mode_X, pn_Cond_false);
1328                         mark_irn_visited(proj);
1329                         exchange(projF, proj);
1330                         projF = proj;
1331
1332                         proj = new_r_Proj(irg, newbl_eq, irn, mode_X, pn_Cond_true);
1333                         mark_irn_visited(proj);
1334
1335                         newbl_l = new_r_Block(irg, 1, &proj);
1336
1337                         dbg   = get_irn_dbg_info(cmp);
1338                         cmpL = new_rd_Cmp(dbg, irg, newbl_l, lentry->low_word, rentry->low_word);
1339                         irn = new_r_Proj(irg, newbl_l, cmpL, mode_b, pnc);
1340                         dbg = get_irn_dbg_info(node);
1341                         irn = new_rd_Cond(dbg, irg, newbl_l, irn);
1342
1343                         proj = new_r_Proj(irg, newbl_l, irn, mode_X, pn_Cond_true);
1344                         mark_irn_visited(proj);
1345                         add_block_cf_input(dstT, projT, proj);
1346
1347                         proj = new_r_Proj(irg, newbl_l, irn, mode_X, pn_Cond_false);
1348                         mark_irn_visited(proj);
1349                         add_block_cf_input(dstF, projF, proj);
1350                 }
1351
1352                 /* we have changed the control flow */
1353                 env->flags |= CF_CHANGED;
1354         }
1355         else {
1356                 idx = get_irn_idx(sel);
1357
1358                 if (env->entries[idx]) {
1359                         /*
1360                            Bad, a jump-table with double-word index.
1361                            This should not happen, but if it does we handle
1362                            it like a Conv were between (in other words, ignore
1363                            the high part.
1364                          */
1365
1366                         if (! env->entries[idx]->low_word) {
1367                                 /* not ready yet, wait */
1368                                 pdeq_putr(env->waitq, node);
1369                                 return;
1370                         }
1371                         set_Cond_selector(node, env->entries[idx]->low_word);
1372                 }
1373         }
1374 }
1375
1376 /**
1377  * Translate a Conv to higher_signed
1378  */
1379 static void lower_Conv_to_Ls(ir_node *node, lower_env_t *env) {
1380         ir_node  *op    = get_Conv_op(node);
1381         ir_mode  *imode = get_irn_mode(op);
1382         ir_mode  *dst_mode = env->params->low_signed;
1383         int      idx = get_irn_idx(node);
1384         ir_graph *irg = current_ir_graph;
1385         ir_node  *block = get_nodes_block(node);
1386         dbg_info *dbg = get_irn_dbg_info(node);
1387
1388         assert(idx < env->n_entries);
1389
1390         if (mode_is_int(imode) || mode_is_reference(imode)) {
1391                 /* simple case: create a high word */
1392                 if (imode != dst_mode)
1393                         op = new_rd_Conv(dbg, irg, block, op, dst_mode);
1394
1395                 env->entries[idx]->low_word  = op;
1396                 env->entries[idx]->high_word = new_rd_Shrs(dbg, irg, block, op,
1397                         new_Const_long(mode_Iu, get_mode_size_bits(dst_mode) - 1), dst_mode);
1398         }
1399         else {
1400                 ir_node *irn, *call;
1401                 ir_mode *omode = env->params->high_signed;
1402                 ir_type *mtp = get_conv_type(imode, omode, env);
1403
1404                 irn = get_intrinsic_address(mtp, get_irn_op(node), imode, omode, block, env);
1405                 call = new_rd_Call(dbg, irg, block, get_irg_no_mem(irg), irn, 1, &op, mtp);
1406                 set_irn_pinned(call, get_irn_pinned(node));
1407                 irn = new_r_Proj(irg, block, call, mode_T, pn_Call_T_result);
1408
1409                 env->entries[idx]->low_word  = new_r_Proj(irg, block, irn, dst_mode, 0);
1410                 env->entries[idx]->high_word = new_r_Proj(irg, block, irn, dst_mode, 1);
1411         }
1412 }
1413
1414 /**
1415  * Translate a Conv to higher_unsigned
1416  */
1417 static void lower_Conv_to_Lu(ir_node *node, lower_env_t *env) {
1418         ir_node  *op    = get_Conv_op(node);
1419         ir_mode  *imode  = get_irn_mode(op);
1420         ir_mode  *dst_mode = env->params->low_unsigned;
1421         int      idx = get_irn_idx(node);
1422         ir_graph *irg = current_ir_graph;
1423         ir_node  *block = get_nodes_block(node);
1424         dbg_info *dbg = get_irn_dbg_info(node);
1425
1426         assert(idx < env->n_entries);
1427
1428         if (mode_is_int(imode) || mode_is_reference(imode)) {
1429                 /* simple case: create a high word */
1430                 if (imode != dst_mode)
1431                         op = new_rd_Conv(dbg, irg, block, op, dst_mode);
1432
1433                 env->entries[idx]->low_word  = op;
1434                 env->entries[idx]->high_word = new_Const(dst_mode, get_mode_null(dst_mode));
1435         }
1436         else {
1437                 ir_node *irn, *call;
1438                 ir_mode *omode = env->params->high_unsigned;
1439                 ir_type *mtp = get_conv_type(imode, omode, env);
1440
1441                 irn = get_intrinsic_address(mtp, get_irn_op(node), imode, omode, block, env);
1442                 call = new_rd_Call(dbg, irg, block, get_irg_no_mem(irg), irn, 1, &op, mtp);
1443                 set_irn_pinned(call, get_irn_pinned(node));
1444                 irn = new_r_Proj(irg, block, call, mode_T, pn_Call_T_result);
1445
1446                 env->entries[idx]->low_word  = new_r_Proj(irg, block, irn, dst_mode, 0);
1447                 env->entries[idx]->high_word = new_r_Proj(irg, block, irn, dst_mode, 1);
1448         }
1449 }
1450
1451 /**
1452  * Translate a Conv from higher_signed
1453  */
1454 static void lower_Conv_from_Ls(ir_node *node, lower_env_t *env) {
1455         ir_node  *op    = get_Conv_op(node);
1456         ir_mode  *omode = get_irn_mode(node);
1457         ir_node  *block = get_nodes_block(node);
1458         dbg_info *dbg = get_irn_dbg_info(node);
1459         int      idx = get_irn_idx(op);
1460         ir_graph *irg = current_ir_graph;
1461
1462         assert(idx < env->n_entries);
1463
1464         if (mode_is_int(omode) || mode_is_reference(omode)) {
1465                 op = env->entries[idx]->low_word;
1466
1467                 /* simple case: create a high word */
1468                 if (omode != env->params->low_signed)
1469                         op = new_rd_Conv(dbg, irg, block, op, omode);
1470
1471                 set_Conv_op(node, op);
1472         }
1473         else {
1474                 ir_node *irn, *call, *in[2];
1475                 ir_mode *imode = env->params->high_signed;
1476                 ir_type *mtp = get_conv_type(imode, omode, env);
1477
1478                 irn = get_intrinsic_address(mtp, get_irn_op(node), imode, omode, block, env);
1479                 in[0] = env->entries[idx]->low_word;
1480                 in[1] = env->entries[idx]->high_word;
1481
1482                 call = new_rd_Call(dbg, irg, block, get_irg_no_mem(irg), irn, 2, in, mtp);
1483                 set_irn_pinned(call, get_irn_pinned(node));
1484                 irn = new_r_Proj(irg, block, call, mode_T, pn_Call_T_result);
1485
1486                 exchange(node, new_r_Proj(irg, block, irn, omode, 0));
1487         }
1488 }
1489
1490 /**
1491  * Translate a Conv from higher_unsigned
1492  */
1493 static void lower_Conv_from_Lu(ir_node *node, lower_env_t *env) {
1494         ir_node  *op    = get_Conv_op(node);
1495         ir_mode  *omode = get_irn_mode(node);
1496         ir_node  *block = get_nodes_block(node);
1497         dbg_info *dbg = get_irn_dbg_info(node);
1498         int      idx = get_irn_idx(op);
1499         ir_graph *irg = current_ir_graph;
1500
1501         assert(idx < env->n_entries);
1502
1503         if (mode_is_int(omode) || mode_is_reference(omode)) {
1504                 op = env->entries[idx]->low_word;
1505
1506                 /* simple case: create a high word */
1507                 if (omode != env->params->low_unsigned)
1508                         op = new_rd_Conv(dbg, irg, block, op, omode);
1509
1510                 set_Conv_op(node, op);
1511         }
1512         else {
1513                 ir_node *irn, *call, *in[2];
1514                 ir_mode *imode = env->params->high_unsigned;
1515                 ir_type *mtp = get_conv_type(imode, omode, env);
1516
1517                 irn = get_intrinsic_address(mtp, get_irn_op(node), imode, omode, block, env);
1518                 in[0] = env->entries[idx]->low_word;
1519                 in[1] = env->entries[idx]->high_word;
1520
1521                 call = new_rd_Call(dbg, irg, block, get_irg_no_mem(irg), irn, 2, in, mtp);
1522                 set_irn_pinned(call, get_irn_pinned(node));
1523                 irn = new_r_Proj(irg, block, call, mode_T, pn_Call_T_result);
1524
1525                 exchange(node, new_r_Proj(irg, block, irn, omode, 0));
1526         }
1527 }
1528
1529 /**
1530  * Translate a Conv.
1531  */
1532 static void lower_Conv(ir_node *node, ir_mode *mode, lower_env_t *env) {
1533         mode = get_irn_mode(node);
1534
1535         if (mode == env->params->high_signed)
1536                 lower_Conv_to_Ls(node, env);
1537         else if (mode == env->params->high_unsigned)
1538                 lower_Conv_to_Lu(node, env);
1539         else {
1540                 ir_mode *mode = get_irn_mode(get_Conv_op(node));
1541
1542                 if (mode == env->params->high_signed)
1543                         lower_Conv_from_Ls(node, env);
1544                 else {
1545                         assert(mode == env->params->high_unsigned);
1546                         lower_Conv_from_Lu(node, env);
1547                 }
1548         }
1549 }
1550
1551 /**
1552  * Lower the method type.
1553  */
1554 static ir_type *lower_mtp(ir_type *mtp, lower_env_t *env) {
1555         pmap_entry *entry;
1556         ident      *id;
1557         ir_type    *res;
1558
1559         if (is_lowered_type(mtp))
1560                 return mtp;
1561
1562         entry = pmap_find(lowered_type, mtp);
1563         if (! entry) {
1564                 int i, n, r, n_param, n_res;
1565
1566                 /* count new number of params */
1567                 n_param = n = get_method_n_params(mtp);
1568                 for (i = n_param - 1; i >= 0; --i) {
1569                         ir_type *tp = get_method_param_type(mtp, i);
1570
1571                         if (is_Primitive_type(tp)) {
1572                                 ir_mode *mode = get_type_mode(tp);
1573
1574                                 if (mode == env->params->high_signed ||
1575                                         mode == env->params->high_unsigned)
1576                                         ++n_param;
1577                         }
1578                 }
1579
1580                 /* count new number of results */
1581                 n_res = r = get_method_n_ress(mtp);
1582                 for (i = n_res - 1; i >= 0; --i) {
1583                         ir_type *tp = get_method_res_type(mtp, i);
1584
1585                         if (is_Primitive_type(tp)) {
1586                                 ir_mode *mode = get_type_mode(tp);
1587
1588                                 if (mode == env->params->high_signed ||
1589                                         mode == env->params->high_unsigned)
1590                                         ++n_res;
1591                         }
1592                 }
1593
1594                 id = mangle_u(new_id_from_chars("L", 1), get_type_ident(mtp));
1595                 res = new_type_method(id, n_param, n_res);
1596
1597                 /* set param types and result types */
1598                 for (i = n_param = 0; i < n; ++i) {
1599                         ir_type *tp = get_method_param_type(mtp, i);
1600
1601                         if (is_Primitive_type(tp)) {
1602                                 ir_mode *mode = get_type_mode(tp);
1603
1604                                 if (mode == env->params->high_signed) {
1605                                         set_method_param_type(res, n_param++, tp_s);
1606                                         set_method_param_type(res, n_param++, tp_s);
1607                                 }
1608                                 else if (mode == env->params->high_unsigned) {
1609                                         set_method_param_type(res, n_param++, tp_u);
1610                                         set_method_param_type(res, n_param++, tp_u);
1611                                 }
1612                                 else
1613                                         set_method_param_type(res, n_param++, tp);
1614                         }
1615                         else
1616                                 set_method_param_type(res, n_param++, tp);
1617                 }
1618                 for (i = n_res = 0; i < r; ++i) {
1619                         ir_type *tp = get_method_res_type(mtp, i);
1620
1621                         if (is_Primitive_type(tp)) {
1622                                 ir_mode *mode = get_type_mode(tp);
1623
1624                                 if (mode == env->params->high_signed) {
1625                                         set_method_res_type(res, n_res++, tp_s);
1626                                         set_method_res_type(res, n_res++, tp_s);
1627                                 }
1628                                 else if (mode == env->params->high_unsigned) {
1629                                         set_method_res_type(res, n_res++, tp_u);
1630                                         set_method_res_type(res, n_res++, tp_u);
1631                                 }
1632                                 else
1633                                         set_method_res_type(res, n_res++, tp);
1634                         }
1635                         else
1636                                 set_method_res_type(res, n_res++, tp);
1637                 }
1638                 set_lowered_type(mtp, res);
1639                 pmap_insert(lowered_type, mtp, res);
1640         }
1641         else
1642                 res = entry->value;
1643         return res;
1644 }
1645
1646 /**
1647  * Translate a Return.
1648  */
1649 static void lower_Return(ir_node *node, ir_mode *mode, lower_env_t *env) {
1650         ir_graph *irg = current_ir_graph;
1651         entity   *ent = get_irg_entity(irg);
1652         ir_type  *mtp = get_entity_type(ent);
1653         ir_node  **in;
1654         int      i, j, n, idx;
1655         int      need_conv = 0;
1656
1657         /* check if this return must be lowered */
1658         for (i = 0, n = get_Return_n_ress(node); i < n; ++i) {
1659                 ir_node *pred = get_Return_res(node, i);
1660                 ir_mode *mode = get_irn_op_mode(pred);
1661
1662                 if (mode == env->params->high_signed ||
1663                         mode == env->params->high_unsigned) {
1664                         idx = get_irn_idx(pred);
1665                         if (! env->entries[idx]->low_word) {
1666                                 /* not ready yet, wait */
1667                                 pdeq_putr(env->waitq, node);
1668                                 return;
1669                         }
1670                         need_conv = 1;
1671                 }
1672         }
1673         if (! need_conv)
1674                 return;
1675
1676         ent = get_irg_entity(irg);
1677         mtp = get_entity_type(ent);
1678
1679         mtp = lower_mtp(mtp, env);
1680         set_entity_type(ent, mtp);
1681
1682         /* create a new in array */
1683         NEW_ARR_A(ir_node *, in, get_method_n_ress(mtp) + 1);
1684         in[0] = get_Return_mem(node);
1685
1686         for (j = i = 0, n = get_Return_n_ress(node); i < n; ++i) {
1687                 ir_node *pred = get_Return_res(node, i);
1688
1689                 idx = get_irn_idx(pred);
1690                 assert(idx < env->n_entries);
1691
1692                 if (env->entries[idx]) {
1693                         in[++j] = env->entries[idx]->low_word;
1694                         in[++j] = env->entries[idx]->high_word;
1695                 }
1696                 else
1697                         in[++j] = pred;
1698         }
1699
1700         set_irn_in(node, j+1, in);
1701 }
1702
1703 /**
1704  * Translate the parameters.
1705  */
1706 static void lower_Start(ir_node *node, ir_mode *mode, lower_env_t *env) {
1707         ir_graph *irg = current_ir_graph;
1708         entity   *ent = get_irg_entity(irg);
1709         ir_type  *tp  = get_entity_type(ent);
1710         ir_type  *mtp;
1711         long     *new_projs;
1712         int      i, j, n_params, rem;
1713         ir_node  *proj, *args;
1714
1715         if (is_lowered_type(tp))
1716                 mtp = get_associated_type(tp);
1717         else
1718                 mtp = tp;
1719
1720         assert(! is_lowered_type(mtp));
1721
1722         n_params = get_method_n_params(mtp);
1723         if (n_params <= 0)
1724                 return;
1725
1726         NEW_ARR_A(long, new_projs, n_params);
1727
1728         /* first check if we have parameters that must be fixed */
1729         for (i = j = 0; i < n_params; ++i, ++j) {
1730                 ir_type *tp = get_method_param_type(mtp, i);
1731
1732                 new_projs[i] = j;
1733                 if (is_Primitive_type(tp)) {
1734                         ir_mode *mode = get_type_mode(tp);
1735
1736                         if (mode == env->params->high_signed ||
1737                                 mode == env->params->high_unsigned)
1738                                 ++j;
1739                 }
1740         }
1741         if (i == j)
1742                 return;
1743
1744         mtp = lower_mtp(mtp, env);
1745         set_entity_type(ent, mtp);
1746
1747         /* switch off optimization for new Proj nodes or they might be CSE'ed
1748            with not patched one's */
1749         rem = get_optimize();
1750         set_optimize(0);
1751
1752         /* ok, fix all Proj's and create new ones */
1753         args = get_irg_args(irg);
1754         for (proj = get_irn_link(node); proj; proj = get_irn_link(proj)) {
1755                 ir_node *pred = get_Proj_pred(proj);
1756                 long proj_nr;
1757                 int idx;
1758                 ir_mode *mode;
1759                 dbg_info *dbg;
1760
1761                 /* do not visit this node again */
1762                 mark_irn_visited(proj);
1763
1764                 if (pred != args)
1765                         continue;
1766
1767                 proj_nr = get_Proj_proj(proj);
1768                 set_Proj_proj(proj, new_projs[proj_nr]);
1769
1770                 idx = get_irn_idx(proj);
1771                 if (env->entries[idx]) {
1772                         mode = get_irn_mode(proj);
1773
1774                         if (mode == env->params->high_signed)
1775                                 mode = env->params->low_signed;
1776                         else
1777                                 mode = env->params->low_unsigned;
1778
1779                         dbg = get_irn_dbg_info(proj);
1780                         env->entries[idx]->low_word  =
1781                                 new_rd_Proj(dbg, irg, get_nodes_block(proj), args, mode, new_projs[proj_nr]);
1782                         env->entries[idx]->high_word =
1783                                 new_rd_Proj(dbg, irg, get_nodes_block(proj), args, mode, new_projs[proj_nr] + 1);
1784                 }
1785         }
1786         set_optimize(rem);
1787 }
1788
1789 /**
1790  * Translate a Call.
1791  */
1792 static void lower_Call(ir_node *node, ir_mode *mode, lower_env_t *env) {
1793         ir_graph *irg = current_ir_graph;
1794         ir_type  *tp = get_Call_type(node);
1795         ir_type  *call_tp;
1796         ir_node  **in, *proj, *results;
1797         int      n_params, n_res, need_lower = 0;
1798         int      i, j;
1799         long     *res_numbers = NULL;
1800
1801         if (is_lowered_type(tp))
1802                 call_tp = get_associated_type(tp);
1803         else
1804                 call_tp = tp;
1805
1806         assert(! is_lowered_type(call_tp));
1807
1808         n_params = get_method_n_params(call_tp);
1809         for (i = 0; i < n_params; ++i) {
1810                 ir_type *tp = get_method_param_type(call_tp, i);
1811
1812                 if (is_Primitive_type(tp)) {
1813                         ir_mode *mode = get_type_mode(tp);
1814
1815                         if (mode == env->params->high_signed ||
1816                                 mode == env->params->high_unsigned) {
1817                                 need_lower = 1;
1818                                 break;
1819                         }
1820                 }
1821         }
1822         n_res = get_method_n_ress(call_tp);
1823         if (n_res > 0) {
1824                 NEW_ARR_A(long, res_numbers, n_res);
1825
1826                 for (i = j = 0; i < n_res; ++i, ++j) {
1827                         ir_type *tp = get_method_res_type(call_tp, i);
1828
1829                         res_numbers[i] = j;
1830                         if (is_Primitive_type(tp)) {
1831                                 ir_mode *mode = get_type_mode(tp);
1832
1833                                 if (mode == env->params->high_signed ||
1834                                         mode == env->params->high_unsigned) {
1835                                         need_lower = 1;
1836                                         ++j;
1837                                 }
1838                         }
1839                 }
1840         }
1841
1842         if (! need_lower)
1843                 return;
1844
1845         /* let's lower it */
1846         call_tp = lower_mtp(call_tp, env);
1847         set_Call_type(node, call_tp);
1848
1849         NEW_ARR_A(ir_node *, in, get_method_n_params(call_tp) + 2);
1850
1851         in[0] = get_Call_mem(node);
1852         in[1] = get_Call_ptr(node);
1853
1854         for (j = 2, i = 0; i < n_params; ++i) {
1855                 ir_node *pred = get_Call_param(node, i);
1856                 int     idx = get_irn_idx(pred);
1857
1858                 if (env->entries[idx]) {
1859                         if (! env->entries[idx]->low_word) {
1860                                 /* not ready yet, wait */
1861                                 pdeq_putr(env->waitq, node);
1862                                 return;
1863                         }
1864                         in[j++] = env->entries[idx]->low_word;
1865                         in[j++] = env->entries[idx]->high_word;
1866                 }
1867                 else
1868                         in[j++] = pred;
1869         }
1870
1871         set_irn_in(node, j, in);
1872
1873         /* fix the results */
1874         results = NULL;
1875         for (proj = get_irn_link(node); proj; proj = get_irn_link(proj)) {
1876                 long proj_nr = get_Proj_proj(proj);
1877
1878                 if (proj_nr == pn_Call_T_result && get_Proj_pred(proj) == node) {
1879                         /* found the result proj */
1880                         results = proj;
1881                         break;
1882                 }
1883         }
1884
1885         if (results) {          /* there are results */
1886                 int rem = get_optimize();
1887
1888                 /* switch off optimization for new Proj nodes or they might be CSE'ed
1889                    with not patched one's */
1890                 set_optimize(0);
1891                 for (i = j = 0, proj = get_irn_link(results); proj; proj = get_irn_link(proj), ++i, ++j) {
1892                         if (get_Proj_pred(proj) == results) {
1893                                 long proj_nr = get_Proj_proj(proj);
1894                                 int idx;
1895
1896                                 /* found a result */
1897                                 set_Proj_proj(proj, res_numbers[proj_nr]);
1898                                 idx = get_irn_idx(proj);
1899                                 if (env->entries[idx]) {
1900                                         ir_mode *mode = get_irn_mode(proj);
1901                                         dbg_info *dbg;
1902
1903                                         if (mode == env->params->high_signed)
1904                                                 mode = env->params->low_signed;
1905                                         else
1906                                                 mode = env->params->low_unsigned;
1907
1908                                         dbg = get_irn_dbg_info(proj);
1909                                         env->entries[idx]->low_word  =
1910                                                 new_rd_Proj(dbg, irg, get_nodes_block(proj), results, mode, res_numbers[proj_nr]);
1911                                         env->entries[idx]->high_word =
1912                                                 new_rd_Proj(dbg, irg, get_nodes_block(proj), results, mode, res_numbers[proj_nr] + 1);
1913                                 }
1914                                 mark_irn_visited(proj);
1915                         }
1916                 }
1917                 set_optimize(rem);
1918         }
1919 }
1920
1921 /**
1922  * Translate an Unknown into two.
1923  */
1924 static void lower_Unknown(ir_node *node, ir_mode *mode, lower_env_t *env) {
1925         int idx = get_irn_idx(node);
1926
1927         env->entries[idx]->low_word  =
1928         env->entries[idx]->high_word = new_r_Unknown(current_ir_graph, mode);
1929 }
1930
1931 /**
1932  * Translate a Phi.
1933  *
1934  * First step: just create two templates
1935  */
1936 static void lower_Phi(ir_node *phi, ir_mode *mode, lower_env_t *env) {
1937         ir_node  *block, *unk;
1938         ir_node  **inl, **inh;
1939         dbg_info *dbg;
1940         int      idx, i, arity = get_Phi_n_preds(phi);
1941         int      enq = 0;
1942
1943         idx = get_irn_idx(phi);
1944         if (env->entries[idx]->low_word) {
1945                 /* Phi nodes already build, check for inputs */
1946                 ir_node *phil = env->entries[idx]->low_word;
1947                 ir_node *phih = env->entries[idx]->high_word;
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                                 set_Phi_pred(phil, i, env->entries[idx]->low_word);
1955                                 set_Phi_pred(phil, i, env->entries[idx]->high_word);
1956                         }
1957                         else {
1958                                 /* still not ready */
1959                                 pdeq_putr(env->waitq, phi);
1960                                 return;
1961                         }
1962                 }
1963         }
1964
1965         /* first create a new in array */
1966         NEW_ARR_A(ir_node *, inl, arity);
1967         NEW_ARR_A(ir_node *, inh, arity);
1968         unk = new_r_Unknown(current_ir_graph, mode);
1969
1970         for (i = 0; i < arity; ++i) {
1971                 ir_node *pred = get_Phi_pred(phi, i);
1972                 int     idx = get_irn_idx(pred);
1973
1974                 if (env->entries[idx]->low_word) {
1975                         inl[i] = env->entries[idx]->low_word;
1976                         inh[i] = env->entries[idx]->high_word;
1977                 }
1978                 else {
1979                         inl[i] = unk;
1980                         inh[i] = unk;
1981                         enq = 1;
1982                 }
1983         }
1984
1985         dbg = get_irn_dbg_info(phi);
1986         block = get_nodes_block(phi);
1987
1988         idx = get_irn_idx(phi);
1989         assert(idx < env->n_entries);
1990         env->entries[idx]->low_word  = new_rd_Phi(dbg, current_ir_graph, block, arity, inl, mode);
1991         env->entries[idx]->high_word = new_rd_Phi(dbg, current_ir_graph, block, arity, inh, mode);
1992
1993         if (enq) {
1994                 /* not yet finished */
1995                 pdeq_putr(env->waitq, phi);
1996         }
1997 }
1998
1999 /**
2000  * check for opcodes that must always be lowered.
2001  */
2002 static int always_lower(opcode code) {
2003         switch (code) {
2004         case iro_Start:
2005         case iro_Call:
2006         case iro_Return:
2007         case iro_Cond:
2008                 return 1;
2009         default:
2010                 return 0;
2011         }
2012 }
2013
2014 /** The type of a lower function. */
2015 typedef void (*lower_func)(ir_node *node, ir_mode *mode, lower_env_t *env);
2016
2017 /**
2018  * lower a node.
2019  */
2020 static void lower_ops(ir_node *node, void *env)
2021 {
2022         lower_env_t  *lenv = env;
2023         node_entry_t *entry;
2024         int          idx = get_irn_idx(node);
2025
2026         entry = lenv->entries[idx];
2027         if (entry || always_lower(get_irn_opcode(node))) {
2028                 ir_op      *op = get_irn_op(node);
2029                 lower_func func = (lower_func)op->ops.generic;
2030
2031                 if (func) {
2032                         ir_mode *mode = get_irn_op_mode(node);
2033
2034                         if (mode == lenv->params->high_signed)
2035                                 mode = lenv->params->low_signed;
2036                         else
2037                                 mode = lenv->params->low_unsigned;
2038
2039                         DB((dbg, LEVEL_1, "  %+F\n", node));
2040                         func(node, mode, lenv);
2041                 }
2042         }
2043 }
2044
2045 #define IDENT(s)  new_id_from_chars(s, sizeof(s)-1)
2046
2047 /**
2048  * Compare two op_mode_entry_t's.
2049  */
2050 static int cmp_op_mode(const void *elt, const void *key, size_t size) {
2051         const op_mode_entry_t *e1 = elt;
2052         const op_mode_entry_t *e2 = key;
2053
2054         return (e1->op - e2->op) | (e1->imode - e2->imode) | (e1->omode - e2->omode);
2055 }
2056
2057 /**
2058  * Compare two conv_tp_entry_t's.
2059  */
2060 static int cmp_conv_tp(const void *elt, const void *key, size_t size) {
2061         const conv_tp_entry_t *e1 = elt;
2062         const conv_tp_entry_t *e2 = key;
2063
2064         return (e1->imode - e2->imode) | (e1->omode - e2->omode);
2065 }
2066
2067 /*
2068  * Do the lowering.
2069  */
2070 void lower_dw_ops(const lwrdw_param_t *param)
2071 {
2072         lower_env_t lenv;
2073         int i;
2074
2075         if (! param)
2076                 return;
2077
2078         if (! param->enable)
2079                 return;
2080
2081         FIRM_DBG_REGISTER(dbg, "firm.lower.dw");
2082
2083         assert(2 * get_mode_size_bits(param->low_signed)   == get_mode_size_bits(param->high_signed));
2084         assert(2 * get_mode_size_bits(param->low_unsigned) == get_mode_size_bits(param->high_unsigned));
2085         assert(get_mode_size_bits(param->low_signed) == get_mode_size_bits(param->low_unsigned));
2086
2087         if (! prim_types)
2088                 prim_types = pmap_create();
2089         if (! intrinsic_fkt)
2090                 intrinsic_fkt = new_set(cmp_op_mode, iro_MaxOpcode);
2091         if (! conv_types)
2092                 conv_types = new_set(cmp_conv_tp, 16);
2093         if (! lowered_type)
2094                 lowered_type = pmap_create();
2095
2096         if (! tp_u)
2097                 tp_u = get_primitive_type(param->low_unsigned);
2098         if (! tp_s)
2099                 tp_s = get_primitive_type(param->low_signed);
2100
2101
2102         if (! binop_tp_u) {
2103                 binop_tp_u = new_type_method(IDENT("binop_u_intrinsic"), 4, 2);
2104                 set_method_param_type(binop_tp_u, 0, tp_u);
2105                 set_method_param_type(binop_tp_u, 1, tp_u);
2106                 set_method_param_type(binop_tp_u, 2, tp_u);
2107                 set_method_param_type(binop_tp_u, 3, tp_u);
2108                 set_method_res_type(binop_tp_u, 0, tp_u);
2109                 set_method_res_type(binop_tp_u, 1, tp_u);
2110         }
2111         if (! binop_tp_s) {
2112                 binop_tp_s = new_type_method(IDENT("binop_s_intrinsic"), 4, 2);
2113                 set_method_param_type(binop_tp_s, 0, tp_s);
2114                 set_method_param_type(binop_tp_s, 1, tp_s);
2115                 set_method_param_type(binop_tp_s, 2, tp_s);
2116                 set_method_param_type(binop_tp_s, 3, tp_s);
2117                 set_method_res_type(binop_tp_s, 0, tp_s);
2118                 set_method_res_type(binop_tp_s, 1, tp_s);
2119         }
2120         if (! shiftop_tp_u) {
2121                 shiftop_tp_u = new_type_method(IDENT("shiftop_u_intrinsic"), 3, 2);
2122                 set_method_param_type(shiftop_tp_u, 0, tp_u);
2123                 set_method_param_type(shiftop_tp_u, 1, tp_u);
2124                 set_method_param_type(shiftop_tp_u, 2, tp_u);
2125                 set_method_res_type(shiftop_tp_u, 0, tp_u);
2126                 set_method_res_type(shiftop_tp_u, 1, tp_u);
2127         }
2128         if (! shiftop_tp_s) {
2129                 shiftop_tp_s = new_type_method(IDENT("shiftop_s_intrinsic"), 3, 2);
2130                 set_method_param_type(shiftop_tp_s, 0, tp_s);
2131                 set_method_param_type(shiftop_tp_s, 1, tp_s);
2132                 /* beware: shift count is always mode_Iu */
2133                 set_method_param_type(shiftop_tp_s, 2, tp_u);
2134                 set_method_res_type(shiftop_tp_s, 0, tp_s);
2135                 set_method_res_type(shiftop_tp_s, 1, tp_s);
2136         }
2137         if (! unop_tp_u) {
2138                 unop_tp_u = new_type_method(IDENT("unop_u_intrinsic"), 2, 2);
2139                 set_method_param_type(unop_tp_u, 0, tp_u);
2140                 set_method_param_type(unop_tp_u, 1, tp_u);
2141                 set_method_res_type(unop_tp_u, 0, tp_u);
2142                 set_method_res_type(unop_tp_u, 1, tp_u);
2143         }
2144         if (! unop_tp_s) {
2145                 unop_tp_s = new_type_method(IDENT("unop_s_intrinsic"), 2, 2);
2146                 set_method_param_type(unop_tp_s, 0, tp_s);
2147                 set_method_param_type(unop_tp_s, 1, tp_s);
2148                 set_method_res_type(unop_tp_s, 0, tp_s);
2149                 set_method_res_type(unop_tp_s, 1, tp_s);
2150         }
2151
2152         lenv.tv_mode_bytes = new_tarval_from_long(get_mode_size_bytes(param->low_unsigned), mode_Iu);
2153         lenv.tv_mode_bits  = new_tarval_from_long(get_mode_size_bits(param->low_unsigned), mode_Iu);
2154         lenv.waitq         = new_pdeq();
2155         lenv.params        = param;
2156
2157         /* first clear the generic function pointer for all ops */
2158         clear_irp_opcodes_generic_func();
2159
2160 #define LOWER2(op, fkt)   op_##op->ops.generic = (op_func)fkt
2161 #define LOWER(op)         LOWER2(op, lower_##op)
2162 #define LOWER_BIN(op)     LOWER2(op, lower_Binop)
2163 #define LOWER_UN(op)      LOWER2(op, lower_Unop)
2164
2165         LOWER(Load);
2166         LOWER(Store);
2167         LOWER(Const);
2168         LOWER(And);
2169         LOWER(Or);
2170         LOWER(Eor);
2171         LOWER(Not);
2172         LOWER(Cond);
2173         LOWER(Return);
2174         LOWER(Call);
2175         LOWER(Unknown);
2176         LOWER(Phi);
2177         LOWER(Start);
2178
2179         LOWER_BIN(Add);
2180         LOWER_BIN(Sub);
2181         LOWER_BIN(Mul);
2182         LOWER(Shl);
2183         LOWER(Shr);
2184         LOWER(Shrs);
2185         LOWER(Rot);
2186         LOWER_UN(Minus);
2187         LOWER(DivMod);
2188         LOWER(Div);
2189         LOWER(Mod);
2190         LOWER_UN(Abs);
2191
2192         LOWER(Conv);
2193
2194 #undef LOWER_UN
2195 #undef LOWER_BIN
2196 #undef LOWER
2197 #undef LOWER2
2198
2199         /* transform all graphs */
2200         for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
2201                 ir_graph *irg = get_irp_irg(i);
2202                 int n_idx;
2203
2204                 obstack_init(&lenv.obst);
2205
2206                 n_idx = get_irg_last_idx(irg);
2207                 lenv.n_entries = n_idx;
2208                 lenv.entries   = xmalloc(n_idx * sizeof(lenv.entries[0]));
2209                 memset(lenv.entries, 0, n_idx * sizeof(lenv.entries[0]));
2210
2211                 /* first step: link all nodes and allocate data */
2212                 lenv.flags = 0;
2213                 lenv.proj_2_block = pmap_create();
2214                 irg_walk_graph(irg, firm_clear_link, prepare_links, &lenv);
2215
2216                 if (lenv.flags & MUST_BE_LOWERED) {
2217                         DB((dbg, LEVEL_1, "Lowering graph %+F\n", irg));
2218
2219                         /* must do some work */
2220                         irg_walk_graph(irg, NULL, lower_ops, &lenv);
2221
2222                         /* last step: all waiting nodes */
2223                         DB((dbg, LEVEL_1, "finishing waiting nodes:\n"));
2224                         while (! pdeq_empty(lenv.waitq)) {
2225                                 ir_node *node = pdeq_getl(lenv.waitq);
2226
2227                                 lower_ops(node, &lenv);
2228                         }
2229
2230                         /* outs are invalid, we changed the graph */
2231                         set_irg_outs_inconsistent(irg);
2232
2233                         if (lenv.flags & CF_CHANGED) {
2234                                 /* control flow changed, dominance info is invalid */
2235                                 set_irg_doms_inconsistent(irg);
2236                                 set_irg_extblk_inconsistent(irg);
2237                                 set_irg_loopinfo_inconsistent(irg);
2238                         }
2239
2240                         dump_ir_block_graph(irg, "-dw");
2241                 }
2242                 pmap_destroy(lenv.proj_2_block);
2243                 free(lenv.entries);
2244                 obstack_free(&lenv.obst, NULL);
2245         }
2246         del_pdeq(lenv.waitq);
2247 }
2248
2249 /* Default implementation. */
2250 entity *def_create_intrinsic_fkt(ir_type *method, const ir_op *op,
2251                                  const ir_mode *imode, const ir_mode *omode,
2252                                  void *context)
2253 {
2254         char buf[64];
2255         ident *id;
2256         entity *ent;
2257
2258         if (imode == omode)
2259                 snprintf(buf, sizeof(buf), "__l%s%s", get_op_name(op), get_mode_name(imode));
2260         else
2261                 snprintf(buf, sizeof(buf), "__l%s%s%s", get_op_name(op),
2262                         get_mode_name(imode), get_mode_name(omode));
2263         id = new_id_from_str(buf);
2264
2265         ent = new_entity(get_glob_type(), id, method);
2266         set_entity_ld_ident(ent, get_entity_ident(ent));
2267         set_entity_visibility(ent, visibility_external_allocated);
2268         return ent;
2269 }