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

   1 /*
   2  * Copyright (C) 1995-2011 University of Karlsruhe.  All right reserved.
   3  *
   4  * This file is part of libFirm.
   5  *
   6  * This file may be distributed and/or modified under the terms of the
   7  * GNU General Public License version 2 as published by the Free Software
   8  * Foundation and appearing in the file LICENSE.GPL included in the
   9  * packaging of this file.
  10  *
  11  * Licensees holding valid libFirm Professional Edition licenses may use
  12  * this file in accordance with the libFirm Commercial License.
  13  * Agreement provided with the Software.
  14  *
  15  * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
  16  * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  17  * PURPOSE.
  18  */
  19
  20 /**
  21  * @file
  22  * @brief   Lower double word operations, i.e. 64bit -> 32bit, 32bit -> 16bit etc.
  23  * @date    8.10.2004
  24  * @author  Michael Beck
  25  * @version $Id$
  26  */
  27 #include "config.h"
  28
  29 #include <string.h>
  30 #include <stdlib.h>
  31 #include <stdbool.h>
  32 #include <assert.h>
  33
  34 #include "error.h"
  35 #include "lowering.h"
  36 #include "irnode_t.h"
  37 #include "irgraph_t.h"
  38 #include "irmode_t.h"
  39 #include "iropt_t.h"
  40 #include "irgmod.h"
  41 #include "tv_t.h"
  42 #include "dbginfo_t.h"
  43 #include "iropt_dbg.h"
  44 #include "irflag_t.h"
  45 #include "firmstat.h"
  46 #include "irgwalk.h"
  47 #include "ircons.h"
  48 #include "irflag.h"
  49 #include "irtools.h"
  50 #include "debug.h"
  51 #include "set.h"
  52 #include "pmap.h"
  53 #include "pdeq.h"
  54 #include "irdump.h"
  55 #include "array_t.h"
  56 #include "irpass_t.h"
  57
  58 typedef struct lower_env_t lower_env_t;
  59
  60 /**
  61  * The type of a lower function.
  62  *
  63  * @param node   the node to be lowered
  64  * @param env    the lower environment
  65  */
  66 typedef void (*lower_func)(ir_node *node, ir_mode *mode, lower_env_t *env);
  67
  68 /** A map from (op, imode, omode) to Intrinsic functions entities. */
  69 static set *intrinsic_fkt;
  70
  71 /** A map from (imode, omode) to conv function types. */
  72 static set *conv_types;
  73
  74 /** A map from a method type to its lowered type. */
  75 static pmap *lowered_type;
  76
  77 /** The types for the binop and unop intrinsics. */
  78 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;
  79
  80 /** the debug handle */
  81 DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL;)
  82
  83 /**
  84  * An entry in the (op, imode, omode) -> entity map.
  85  */
  86 typedef struct op_mode_entry {
  87         const ir_op   *op;    /**< the op */
  88         const ir_mode *imode; /**< the input mode */
  89         const ir_mode *omode; /**< the output mode */
  90         ir_entity     *ent;   /**< the associated entity of this (op, imode, omode) triple */
  91 } op_mode_entry_t;
  92
  93 /**
  94  * An entry in the (imode, omode) -> tp map.
  95  */
  96 typedef struct conv_tp_entry {
  97         const ir_mode *imode; /**< the input mode */
  98         const ir_mode *omode; /**< the output mode */
  99         ir_type       *mtd;   /**< the associated method type of this (imode, omode) pair */
 100 } conv_tp_entry_t;
 101
 102 /**
 103  * Every double word node will be replaced,
 104  * we need some store to hold the replacement:
 105  */
 106 typedef struct node_entry_t {
 107         ir_node *low_word;    /**< the low word */
 108         ir_node *high_word;   /**< the high word */
 109 } node_entry_t;
 110
 111 enum lower_flags {
 112         MUST_BE_LOWERED = 1,  /**< graph must be lowered */
 113         CF_CHANGED      = 2,  /**< control flow was changed */
 114 };
 115
 116 /**
 117  * The lower environment.
 118  */
 119 struct lower_env_t {
 120         node_entry_t **entries;       /**< entries per node */
 121         ir_graph      *irg;
 122         struct obstack obst;          /**< an obstack holding the temporary data */
 123         ir_type   *l_mtp;              /**< lowered method type of the current method */
 124         ir_tarval *tv_mode_bytes;     /**< a tarval containing the number of bytes in the lowered modes */
 125         ir_tarval *tv_mode_bits;      /**< a tarval containing the number of bits in the lowered modes */
 126         pdeq      *waitq;              /**< a wait queue of all nodes that must be handled later */
 127         ir_node  **lowered_phis;       /**< list of lowered phis */
 128         pmap      *proj_2_block;       /**< a map from ProjX to its destination blocks */
 129         ir_mode   *high_signed;        /**< doubleword signed type */
 130         ir_mode   *high_unsigned;      /**< doubleword unsigned type */
 131         ir_mode   *low_signed;         /**< word signed type */
 132         ir_mode   *low_unsigned;       /**< word unsigned type */
 133         ident     *first_id;           /**< .l for little and .h for big endian */
 134         ident     *next_id;            /**< .h for little and .l for big endian */
 135         const lwrdw_param_t *params;  /**< transformation parameter */
 136         unsigned flags;               /**< some flags */
 137         unsigned n_entries;           /**< number of entries */
 138         ir_type  *value_param_tp;     /**< the old value param type */
 139 };
 140
 141 static void lower_node(lower_env_t *env, ir_node *node);
 142 static bool mtp_must_be_lowered(lower_env_t *env, ir_type *mtp);
 143
 144 /**
 145  * Create a method type for a Conv emulation from imode to omode.
 146  */
 147 static ir_type *get_conv_type(ir_mode *imode, ir_mode *omode, lower_env_t *env)
 148 {
 149         conv_tp_entry_t key, *entry;
 150         ir_type *mtd;
 151
 152         key.imode = imode;
 153         key.omode = omode;
 154         key.mtd   = NULL;
 155
 156         entry = (conv_tp_entry_t*)set_insert(conv_types, &key, sizeof(key), HASH_PTR(imode) ^ HASH_PTR(omode));
 157         if (! entry->mtd) {
 158                 int n_param = 1, n_res = 1;
 159
 160                 if (imode == env->high_signed || imode == env->high_unsigned)
 161                         n_param = 2;
 162                 if (omode == env->high_signed || omode == env->high_unsigned)
 163                         n_res = 2;
 164
 165                 /* create a new one */
 166                 mtd = new_type_method(n_param, n_res);
 167
 168                 /* set param types and result types */
 169                 n_param = 0;
 170                 if (imode == env->high_signed) {
 171                         set_method_param_type(mtd, n_param++, tp_u);
 172                         set_method_param_type(mtd, n_param++, tp_s);
 173                 } else if (imode == env->high_unsigned) {
 174                         set_method_param_type(mtd, n_param++, tp_u);
 175                         set_method_param_type(mtd, n_param++, tp_u);
 176                 } else {
 177                         ir_type *tp = get_type_for_mode(imode);
 178                         set_method_param_type(mtd, n_param++, tp);
 179                 }
 180
 181                 n_res = 0;
 182                 if (omode == env->high_signed) {
 183                         set_method_res_type(mtd, n_res++, tp_u);
 184                         set_method_res_type(mtd, n_res++, tp_s);
 185                 } else if (omode == env->high_unsigned) {
 186                         set_method_res_type(mtd, n_res++, tp_u);
 187                         set_method_res_type(mtd, n_res++, tp_u);
 188                 } else {
 189                         ir_type *tp = get_type_for_mode(omode);
 190                         set_method_res_type(mtd, n_res++, tp);
 191                 }
 192                 entry->mtd = mtd;
 193         } else {
 194                 mtd = entry->mtd;
 195         }
 196         return mtd;
 197 }
 198
 199 /**
 200  * Add an additional control flow input to a block.
 201  * Patch all Phi nodes. The new Phi inputs are copied from
 202  * old input number nr.
 203  */
 204 static void add_block_cf_input_nr(ir_node *block, int nr, ir_node *cf)
 205 {
 206         int i, arity = get_irn_arity(block);
 207         ir_node **in, *phi;
 208
 209         assert(nr < arity);
 210
 211         NEW_ARR_A(ir_node *, in, arity + 1);
 212         for (i = 0; i < arity; ++i)
 213                 in[i] = get_irn_n(block, i);
 214         in[i] = cf;
 215
 216         set_irn_in(block, i + 1, in);
 217
 218         for (phi = get_Block_phis(block); phi != NULL; phi = get_Phi_next(phi)) {
 219                 for (i = 0; i < arity; ++i)
 220                         in[i] = get_irn_n(phi, i);
 221                 in[i] = in[nr];
 222                 set_irn_in(phi, i + 1, in);
 223         }
 224 }
 225
 226 /**
 227  * Add an additional control flow input to a block.
 228  * Patch all Phi nodes. The new Phi inputs are copied from
 229  * old input from cf tmpl.
 230  */
 231 static void add_block_cf_input(ir_node *block, ir_node *tmpl, ir_node *cf)
 232 {
 233         int i, arity = get_irn_arity(block);
 234         int nr = 0;
 235
 236         for (i = 0; i < arity; ++i) {
 237                 if (get_irn_n(block, i) == tmpl) {
 238                         nr = i;
 239                         break;
 240                 }
 241         }
 242         assert(i < arity);
 243         add_block_cf_input_nr(block, nr, cf);
 244 }
 245
 246 /**
 247  * Return the "operational" mode of a Firm node.
 248  */
 249 static ir_mode *get_irn_op_mode(ir_node *node)
 250 {
 251         switch (get_irn_opcode(node)) {
 252         case iro_Load:
 253                 return get_Load_mode(node);
 254         case iro_Store:
 255                 return get_irn_mode(get_Store_value(node));
 256         case iro_Div:
 257                 return get_irn_mode(get_Div_left(node));
 258         case iro_Mod:
 259                 return get_irn_mode(get_Mod_left(node));
 260         case iro_Cmp:
 261                 return get_irn_mode(get_Cmp_left(node));
 262         default:
 263                 return get_irn_mode(node);
 264         }
 265 }
 266
 267 /**
 268  * Walker, prepare the node links and determine which nodes need to be lowered
 269  * at all.
 270  */
 271 static void prepare_links(lower_env_t *env, ir_node *node)
 272 {
 273         ir_mode      *mode = get_irn_op_mode(node);
 274         node_entry_t *link;
 275         int           i;
 276
 277         if (mode == env->high_signed || mode == env->high_unsigned) {
 278                 unsigned idx = get_irn_idx(node);
 279                 /* ok, found a node that will be lowered */
 280                 link = OALLOCZ(&env->obst, node_entry_t);
 281
 282                 if (idx >= env->n_entries) {
 283                         /* enlarge: this happens only for Rotl nodes which is RARELY */
 284                         unsigned old   = env->n_entries;
 285                         unsigned n_idx = idx + (idx >> 3);
 286
 287                         ARR_RESIZE(node_entry_t *, env->entries, n_idx);
 288                         memset(&env->entries[old], 0, (n_idx - old) * sizeof(env->entries[0]));
 289                         env->n_entries = n_idx;
 290                 }
 291                 env->entries[idx] = link;
 292                 env->flags |= MUST_BE_LOWERED;
 293         } else if (is_Conv(node)) {
 294                 /* Conv nodes have two modes */
 295                 ir_node *pred = get_Conv_op(node);
 296                 mode = get_irn_mode(pred);
 297
 298                 if (mode == env->high_signed || mode == env->high_unsigned) {
 299                         /* must lower this node either but don't need a link */
 300                         env->flags |= MUST_BE_LOWERED;
 301                 }
 302                 return;
 303         }
 304
 305         if (is_Proj(node)) {
 306                 /* link all Proj nodes to its predecessor:
 307                    Note that Tuple Proj's and its Projs are linked either. */
 308                 ir_node *pred = get_Proj_pred(node);
 309
 310                 set_irn_link(node, get_irn_link(pred));
 311                 set_irn_link(pred, node);
 312         } else if (is_Phi(node)) {
 313                 /* link all Phi nodes to its block */
 314                 ir_node *block = get_nodes_block(node);
 315                 add_Block_phi(block, node);
 316         } else if (is_Block(node)) {
 317                 /* fill the Proj -> Block map */
 318                 for (i = get_Block_n_cfgpreds(node) - 1; i >= 0; --i) {
 319                         ir_node *pred = get_Block_cfgpred(node, i);
 320
 321                         if (is_Proj(pred))
 322                                 pmap_insert(env->proj_2_block, pred, node);
 323                 }
 324         }
 325 }
 326
 327 static node_entry_t *get_node_entry(lower_env_t *env, ir_node *node)
 328 {
 329         unsigned idx = get_irn_idx(node);
 330         assert(idx < env->n_entries);
 331         return env->entries[idx];
 332 }
 333
 334 static void set_lowered(lower_env_t *env, ir_node *old,
 335                         ir_node *new_low, ir_node *new_high)
 336 {
 337         node_entry_t *entry = get_node_entry(env, old);
 338         entry->low_word  = new_low;
 339         entry->high_word = new_high;
 340 }
 341
 342 /**
 343  * Translate a Constant: create two.
 344  */
 345 static void lower_Const(ir_node *node, ir_mode *mode, lower_env_t *env)
 346 {
 347         ir_graph  *irg      = get_irn_irg(node);
 348         dbg_info  *dbg      = get_irn_dbg_info(node);
 349         ir_mode   *low_mode = env->low_unsigned;
 350         ir_tarval *tv       = get_Const_tarval(node);
 351         ir_tarval *tv_l     = tarval_convert_to(tv, low_mode);
 352         ir_node   *res_low  = new_rd_Const(dbg, irg, tv_l);
 353         ir_tarval *tv_shrs  = tarval_shrs(tv, env->tv_mode_bits);
 354         ir_tarval *tv_h     = tarval_convert_to(tv_shrs, mode);
 355         ir_node   *res_high = new_rd_Const(dbg, irg, tv_h);
 356
 357         set_lowered(env, node, res_low, res_high);
 358 }
 359
 360 /**
 361  * Translate a Load: create two.
 362  */
 363 static void lower_Load(ir_node *node, ir_mode *mode, lower_env_t *env)
 364 {
 365         ir_mode    *low_mode = env->low_unsigned;
 366         ir_graph   *irg = get_irn_irg(node);
 367         ir_node    *adr = get_Load_ptr(node);
 368         ir_node    *mem = get_Load_mem(node);
 369         ir_node    *low, *high, *proj;
 370         dbg_info   *dbg;
 371         ir_node    *block = get_nodes_block(node);
 372         ir_cons_flags volatility = get_Load_volatility(node) == volatility_is_volatile
 373                                  ? cons_volatile : cons_none;
 374
 375         if (env->params->little_endian) {
 376                 low  = adr;
 377                 high = new_r_Add(block, adr, new_r_Const(irg, env->tv_mode_bytes), get_irn_mode(adr));
 378         } else {
 379                 low  = new_r_Add(block, adr, new_r_Const(irg, env->tv_mode_bytes), 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, block, mem,  low,  low_mode, volatility);
 386         proj = new_r_Proj(low, mode_M, pn_Load_M);
 387         high = new_rd_Load(dbg, block, proj, high, mode, volatility);
 388
 389         set_lowered(env, node, low, high);
 390
 391         for (proj = (ir_node*)get_irn_link(node); proj;
 392              proj = (ir_node*)get_irn_link(proj)) {
 393                 switch (get_Proj_proj(proj)) {
 394                 case pn_Load_M:         /* Memory result. */
 395                         /* put it to the second one */
 396                         set_Proj_pred(proj, high);
 397                         break;
 398                 case pn_Load_X_except:  /* Execution result if exception occurred. */
 399                         /* put it to the first one */
 400                         set_Proj_pred(proj, low);
 401                         break;
 402                 case pn_Load_res: {       /* Result of load operation. */
 403                         ir_node *res_low  = new_r_Proj(low,  low_mode, pn_Load_res);
 404                         ir_node *res_high = new_r_Proj(high, mode,     pn_Load_res);
 405                         set_lowered(env, proj, res_low, res_high);
 406                         break;
 407                 }
 408                 default:
 409                         assert(0 && "unexpected Proj number");
 410                 }
 411                 /* mark this proj: we have handled it already, otherwise we might fall
 412                  * into out new nodes. */
 413                 mark_irn_visited(proj);
 414         }
 415 }
 416
 417 /**
 418  * Translate a Store: create two.
 419  */
 420 static void lower_Store(ir_node *node, ir_mode *mode, lower_env_t *env)
 421 {
 422         ir_graph     *irg;
 423         ir_node      *block, *adr, *mem;
 424         ir_node      *low, *high, *proj;
 425         dbg_info     *dbg;
 426         ir_node            *value = get_Store_value(node);
 427         const node_entry_t *entry = get_node_entry(env, value);
 428         ir_cons_flags volatility = get_Store_volatility(node) == volatility_is_volatile
 429                                    ? cons_volatile : cons_none;
 430         (void) mode;
 431
 432         assert(entry);
 433
 434         if (! entry->low_word) {
 435                 /* not ready yet, wait */
 436                 pdeq_putr(env->waitq, node);
 437                 return;
 438         }
 439
 440         irg = get_irn_irg(node);
 441         adr = get_Store_ptr(node);
 442         mem = get_Store_mem(node);
 443         block = get_nodes_block(node);
 444
 445         if (env->params->little_endian) {
 446                 low  = adr;
 447                 high = new_r_Add(block, adr, new_r_Const(irg, env->tv_mode_bytes), get_irn_mode(adr));
 448         } else {
 449                 low  = new_r_Add(block, adr, new_r_Const(irg, env->tv_mode_bytes), get_irn_mode(adr));
 450                 high = adr;
 451         }
 452
 453         /* create two Stores */
 454         dbg = get_irn_dbg_info(node);
 455         low  = new_rd_Store(dbg, block, mem, low,  entry->low_word, volatility);
 456         proj = new_r_Proj(low, mode_M, pn_Store_M);
 457         high = new_rd_Store(dbg, block, proj, high, entry->high_word, volatility);
 458
 459         set_lowered(env, node, low, high);
 460
 461         for (proj = (ir_node*)get_irn_link(node); proj;
 462              proj = (ir_node*)get_irn_link(proj)) {
 463                 switch (get_Proj_proj(proj)) {
 464                 case pn_Store_M:         /* Memory result. */
 465                         /* put it to the second one */
 466                         set_Proj_pred(proj, high);
 467                         break;
 468                 case pn_Store_X_except:  /* Execution result if exception occurred. */
 469                         /* put it to the first one */
 470                         set_Proj_pred(proj, low);
 471                         break;
 472                 default:
 473                         assert(0 && "unexpected Proj number");
 474                 }
 475                 /* mark this proj: we have handled it already, otherwise we might fall into
 476                  * out new nodes. */
 477                 mark_irn_visited(proj);
 478         }
 479 }
 480
 481 /**
 482  * Return a node containing the address of the intrinsic emulation function.
 483  *
 484  * @param method  the method type of the emulation function
 485  * @param op      the emulated ir_op
 486  * @param imode   the input mode of the emulated opcode
 487  * @param omode   the output mode of the emulated opcode
 488  * @param env     the lower environment
 489  */
 490 static ir_node *get_intrinsic_address(ir_type *method, ir_op *op,
 491                                       ir_mode *imode, ir_mode *omode,
 492                                       lower_env_t *env)
 493 {
 494         symconst_symbol sym;
 495         ir_entity *ent;
 496         op_mode_entry_t key, *entry;
 497
 498         key.op    = op;
 499         key.imode = imode;
 500         key.omode = omode;
 501         key.ent   = NULL;
 502
 503         entry = (op_mode_entry_t*)set_insert(intrinsic_fkt, &key, sizeof(key),
 504                                 HASH_PTR(op) ^ HASH_PTR(imode) ^ (HASH_PTR(omode) << 8));
 505         if (! entry->ent) {
 506                 /* create a new one */
 507                 ent = env->params->create_intrinsic(method, op, imode, omode, env->params->ctx);
 508
 509                 assert(ent && "Intrinsic creator must return an entity");
 510                 entry->ent = ent;
 511         } else {
 512                 ent = entry->ent;
 513         }
 514         sym.entity_p = ent;
 515         return new_r_SymConst(env->irg, mode_P_code, sym, symconst_addr_ent);
 516 }
 517
 518 /**
 519  * Translate a Div.
 520  *
 521  * Create an intrinsic Call.
 522  */
 523 static void lower_Div(ir_node *node, ir_mode *mode, lower_env_t *env)
 524 {
 525         ir_node            *left        = get_Div_left(node);
 526         ir_node            *right       = get_Div_right(node);
 527         const node_entry_t *left_entry  = get_node_entry(env, left);
 528         const node_entry_t *right_entry = get_node_entry(env, right);
 529         ir_node            *block       = get_nodes_block(node);
 530         dbg_info           *dbgi        = get_irn_dbg_info(node);
 531         ir_type            *mtp
 532                 = mode_is_signed(mode) ? binop_tp_s : binop_tp_u;
 533         ir_mode            *opmode = get_irn_op_mode(node);
 534         ir_node            *addr
 535                 = get_intrinsic_address(mtp, get_irn_op(node), opmode, opmode, env);
 536         ir_node  *in[4] = {
 537                 left_entry->low_word, left_entry->high_word,
 538                 right_entry->low_word, right_entry->high_word };
 539         ir_node            *call
 540                 = new_rd_Call(dbgi, block, get_Div_mem(node), addr, 4, in, mtp);
 541         ir_node            *resproj = new_r_Proj(call, mode_T, pn_Call_T_result);
 542         ir_node            *proj;
 543
 544         set_irn_pinned(call, get_irn_pinned(node));
 545
 546         for (proj = (ir_node*)get_irn_link(node); proj;
 547              proj = (ir_node*)get_irn_link(proj)) {
 548                 switch (get_Proj_proj(proj)) {
 549                 case pn_Div_M:         /* Memory result. */
 550                         /* reroute to the call */
 551                         set_Proj_pred(proj, call);
 552                         set_Proj_proj(proj, pn_Call_M);
 553                         break;
 554                 case pn_Div_X_except:  /* Execution result if exception occurred. */
 555                         /* reroute to the call */
 556                         set_Proj_pred(proj, call);
 557                         set_Proj_proj(proj, pn_Call_X_except);
 558                         break;
 559                 case pn_Div_res: {
 560                         /* Result of computation. */
 561                         ir_node *res_low  = new_r_Proj(resproj, env->low_unsigned, 0);
 562                         ir_node *res_high = new_r_Proj(resproj, mode,              1);
 563                         set_lowered(env, proj, res_low, res_high);
 564                         break;
 565                 }
 566                 default:
 567                         assert(0 && "unexpected Proj number");
 568                 }
 569                 /* mark this proj: we have handled it already, otherwise we might fall into
 570                  * out new nodes. */
 571                 mark_irn_visited(proj);
 572         }
 573 }
 574
 575 /**
 576  * Translate a Mod.
 577  *
 578  * Create an intrinsic Call.
 579  */
 580 static void lower_Mod(ir_node *node, ir_mode *mode, lower_env_t *env)
 581 {
 582         ir_node            *left        = get_Mod_left(node);
 583         ir_node            *right       = get_Mod_right(node);
 584         const node_entry_t *left_entry  = get_node_entry(env, left);
 585         const node_entry_t *right_entry = get_node_entry(env, right);
 586         ir_node            *in[4]       = {
 587                 left_entry->low_word, left_entry->high_word,
 588                 right_entry->low_word, right_entry->high_word
 589         };
 590         dbg_info           *dbgi        = get_irn_dbg_info(node);
 591         ir_node            *block       = get_nodes_block(node);
 592         ir_type            *mtp
 593                 = mode_is_signed(mode) ? binop_tp_s : binop_tp_u;
 594         ir_mode            *opmode = get_irn_op_mode(node);
 595         ir_node            *addr
 596                 = get_intrinsic_address(mtp, get_irn_op(node), opmode, opmode, env);
 597         ir_node            *call
 598                 = new_rd_Call(dbgi, block, get_Mod_mem(node), addr, 4, in, mtp);
 599         ir_node            *resproj = new_r_Proj(call, mode_T, pn_Call_T_result);
 600         ir_node            *proj;
 601         set_irn_pinned(call, get_irn_pinned(node));
 602
 603         for (proj = (ir_node*)get_irn_link(node); proj;
 604              proj = (ir_node*)get_irn_link(proj)) {
 605                 switch (get_Proj_proj(proj)) {
 606                 case pn_Mod_M:         /* Memory result. */
 607                         /* reroute to the call */
 608                         set_Proj_pred(proj, call);
 609                         set_Proj_proj(proj, pn_Call_M);
 610                         break;
 611                 case pn_Mod_X_except:  /* Execution result if exception occurred. */
 612                         /* reroute to the call */
 613                         set_Proj_pred(proj, call);
 614                         set_Proj_proj(proj, pn_Call_X_except);
 615                         break;
 616                 case pn_Mod_res: {
 617                         /* Result of computation. */
 618                         ir_node *res_low  = new_r_Proj(resproj, env->low_unsigned, 0);
 619                         ir_node *res_high = new_r_Proj(resproj, mode,              1);
 620                         set_lowered(env, proj, res_low, res_high);
 621                         break;
 622                 }
 623                 default:
 624                         assert(0 && "unexpected Proj number");
 625                 }
 626                 /* mark this proj: we have handled it already, otherwise we might fall
 627                  * into out new nodes. */
 628                 mark_irn_visited(proj);
 629         }
 630 }
 631
 632 /**
 633  * Translate a binop.
 634  *
 635  * Create an intrinsic Call.
 636  */
 637 static void lower_binop(ir_node *node, ir_mode *mode, lower_env_t *env)
 638 {
 639         ir_node            *left        = get_binop_left(node);
 640         ir_node            *right       = get_binop_right(node);
 641         const node_entry_t *left_entry  = get_node_entry(env, left);
 642         const node_entry_t *right_entry = get_node_entry(env, right);
 643         ir_node            *in[4]       = {
 644                 left_entry->low_word, left_entry->high_word,
 645                 right_entry->low_word, right_entry->high_word
 646         };
 647         dbg_info           *dbgi        = get_irn_dbg_info(node);
 648         ir_node            *block       = get_nodes_block(node);
 649         ir_graph           *irg         = get_irn_irg(block);
 650         ir_type            *mtp
 651                 = mode_is_signed(mode) ? binop_tp_s : binop_tp_u;
 652         ir_node            *addr
 653                 = get_intrinsic_address(mtp, get_irn_op(node), mode, mode, env);
 654         ir_node            *call
 655                 = new_rd_Call(dbgi, block, get_irg_no_mem(irg), addr, 4, in, mtp);
 656         ir_node            *resproj  = new_r_Proj(call, mode_T, pn_Call_T_result);
 657         ir_node            *res_low  = new_r_Proj(resproj, env->low_unsigned, 0);
 658         ir_node            *res_high = new_r_Proj(resproj, mode,              1);
 659         set_irn_pinned(call, get_irn_pinned(node));
 660         set_lowered(env, node, res_low, res_high);
 661 }
 662
 663 /**
 664  * Translate a Shiftop.
 665  *
 666  * Create an intrinsic Call.
 667  */
 668 static void lower_Shiftop(ir_node *node, ir_mode *mode, lower_env_t *env)
 669 {
 670         ir_node            *block      = get_nodes_block(node);
 671         ir_node            *left       = get_binop_left(node);
 672         const node_entry_t *left_entry = get_node_entry(env, left);
 673         ir_node            *right      = get_binop_right(node);
 674         ir_node            *in[3]      = {
 675                 left_entry->low_word, left_entry->high_word,
 676                 /* it should be safe to conv to low_unsigned */
 677                 new_r_Conv(block, right, env->low_unsigned)
 678         };
 679         dbg_info           *dbgi       = get_irn_dbg_info(node);
 680         ir_graph           *irg        = get_irn_irg(block);
 681         ir_type            *mtp
 682                 = mode_is_signed(mode) ? shiftop_tp_s : shiftop_tp_u;
 683         ir_node            *addr
 684                 = get_intrinsic_address(mtp, get_irn_op(node), mode, mode, env);
 685         ir_node            *call
 686                 = new_rd_Call(dbgi, block, get_irg_no_mem(irg), addr, 3, in, mtp);
 687         ir_node            *resproj  = new_r_Proj(call, mode_T, pn_Call_T_result);
 688         ir_node            *res_low  = new_r_Proj(resproj, env->low_unsigned, 0);
 689         ir_node            *res_high = new_r_Proj(resproj, mode,              1);
 690
 691         set_irn_pinned(call, get_irn_pinned(node));
 692         set_lowered(env, node, res_low, res_high);
 693 }
 694
 695 /**
 696  * Translate a Shr and handle special cases.
 697  */
 698 static void lower_Shr(ir_node *node, ir_mode *mode, lower_env_t *env)
 699 {
 700         ir_graph *irg   = get_irn_irg(node);
 701         ir_node  *right = get_Shr_right(node);
 702
 703         if (get_mode_arithmetic(mode) == irma_twos_complement && is_Const(right)) {
 704                 ir_tarval *tv = get_Const_tarval(right);
 705
 706                 if (tarval_is_long(tv) &&
 707                     get_tarval_long(tv) >= (long)get_mode_size_bits(mode)) {
 708                         ir_node *block        = get_nodes_block(node);
 709                         ir_node *left         = get_Shr_left(node);
 710                         ir_mode *low_unsigned = env->low_unsigned;
 711                         long shf_cnt = get_tarval_long(tv) - get_mode_size_bits(mode);
 712                         const node_entry_t *left_entry = get_node_entry(env, left);
 713                         ir_node *res_low;
 714                         ir_node *res_high;
 715
 716                         left = left_entry->high_word;
 717
 718                         /* convert high word into low_unsigned mode if necessary */
 719                         if (get_irn_mode(left) != low_unsigned)
 720                                 left = new_r_Conv(block, left, low_unsigned);
 721
 722                         if (shf_cnt > 0) {
 723                                 ir_node *c = new_r_Const_long(irg, low_unsigned, shf_cnt);
 724                                 res_low = new_r_Shr(block, left, c, low_unsigned);
 725                         } else {
 726                                 res_low = left;
 727                         }
 728                         res_high = new_r_Const(irg, get_mode_null(mode));
 729                         set_lowered(env, node, res_low, res_high);
 730
 731                         return;
 732                 }
 733         }
 734         lower_Shiftop(node, mode, env);
 735 }
 736
 737 /**
 738  * Translate a Shl and handle special cases.
 739  */
 740 static void lower_Shl(ir_node *node, ir_mode *mode, lower_env_t *env)
 741 {
 742         ir_graph *irg   = get_irn_irg(node);
 743         ir_node  *right = get_Shl_right(node);
 744
 745         if (get_mode_arithmetic(mode) == irma_twos_complement && is_Const(right)) {
 746                 ir_tarval *tv = get_Const_tarval(right);
 747
 748                 if (tarval_is_long(tv)) {
 749                         long value = get_tarval_long(tv);
 750                     if (value >= (long)get_mode_size_bits(mode)) {
 751                                 /* simple case: shift above the lower word */
 752                                 ir_mode *mode_l;
 753                                 ir_node *block = get_nodes_block(node);
 754                                 ir_node *left = get_Shl_left(node);
 755                                 ir_node *c;
 756                                 long shf_cnt = get_tarval_long(tv) - get_mode_size_bits(mode);
 757                                 const node_entry_t *left_entry = get_node_entry(env, left);
 758                                 ir_node  *res_low;
 759                                 ir_node  *res_high;
 760
 761                                 left = left_entry->low_word;
 762                                 left = new_r_Conv(block, left, mode);
 763
 764                                 mode_l = env->low_unsigned;
 765                                 if (shf_cnt > 0) {
 766                                         c        = new_r_Const_long(irg, mode_l, shf_cnt);
 767                                         res_high = new_r_Shl(block, left, c, mode);
 768                                 } else {
 769                                         res_high = left;
 770                                 }
 771                                 res_low = new_r_Const(irg, get_mode_null(mode_l));
 772                                 set_lowered(env, node, res_low, res_high);
 773
 774                                 return;
 775                         }
 776                         if (value == 1) {
 777                                 /* left << 1 == left + left */
 778                                 ir_node            *left        = get_binop_left(node);
 779                                 const node_entry_t *left_entry  = get_node_entry(env, left);
 780                                 ir_node            *in[4]       = {
 781                                         left_entry->low_word, left_entry->high_word,
 782                                         left_entry->low_word, left_entry->high_word,
 783                                 };
 784                                 dbg_info           *dbgi        = get_irn_dbg_info(node);
 785                                 ir_node            *block       = get_nodes_block(node);
 786                                 ir_graph           *irg         = get_irn_irg(block);
 787                                 ir_type            *mtp
 788                                         = mode_is_signed(mode) ? binop_tp_s : binop_tp_u;
 789                                 ir_node            *addr
 790                                         = get_intrinsic_address(mtp, op_Add, mode, mode, env);
 791                                 ir_node            *call
 792                                         = new_rd_Call(dbgi, block, get_irg_no_mem(irg), addr, 4, in, mtp);
 793                                 ir_node            *resproj  = new_r_Proj(call, mode_T, pn_Call_T_result);
 794                                 ir_node            *res_low  = new_r_Proj(resproj, env->low_unsigned, 0);
 795                                 ir_node            *res_high = new_r_Proj(resproj, mode,              1);
 796                                 set_irn_pinned(call, get_irn_pinned(node));
 797                                 set_lowered(env, node, res_low, res_high);
 798
 799                                 return;
 800                         }
 801                 }
 802         }
 803         lower_Shiftop(node, mode, env);
 804 }
 805
 806 /**
 807  * Translate a Shrs and handle special cases.
 808  */
 809 static void lower_Shrs(ir_node *node, ir_mode *mode, lower_env_t *env)
 810 {
 811         ir_graph *irg   = get_irn_irg(node);
 812         ir_node  *right = get_Shrs_right(node);
 813
 814         if (get_mode_arithmetic(mode) == irma_twos_complement && is_Const(right)) {
 815                 ir_tarval *tv = get_Const_tarval(right);
 816
 817                 if (tarval_is_long(tv) &&
 818                     get_tarval_long(tv) >= (long)get_mode_size_bits(mode)) {
 819                         ir_node *block         = get_nodes_block(node);
 820                         ir_node *left          = get_Shrs_left(node);
 821                         ir_mode *low_unsigned  = env->low_unsigned;
 822                         long     shf_cnt       = get_tarval_long(tv) - get_mode_size_bits(mode);
 823                         const node_entry_t *left_entry = get_node_entry(env, left);
 824                         ir_node *left_unsigned = left;
 825                         ir_node *res_low;
 826                         ir_node *res_high;
 827                         ir_node *c;
 828
 829                         left = left_entry->high_word;
 830
 831                         /* convert high word into low_unsigned mode if necessary */
 832                         if (get_irn_mode(left_unsigned) != low_unsigned)
 833                                 left_unsigned = new_r_Conv(block, left, low_unsigned);
 834
 835                         if (shf_cnt > 0) {
 836                                 c       = new_r_Const_long(irg, low_unsigned, shf_cnt);
 837                                 res_low = new_r_Shrs(block, left_unsigned, c, low_unsigned);
 838                         } else {
 839                                 res_low = left_unsigned;
 840                         }
 841
 842                         c        = new_r_Const(irg, get_mode_all_one(low_unsigned));
 843                         res_high = new_r_Shrs(block, left, c, mode);
 844                         set_lowered(env, node, res_low, res_high);
 845                         return;
 846                 }
 847         }
 848         lower_Shiftop(node, mode, env);
 849 }
 850
 851 /**
 852  * Rebuild Rotl nodes into Or(Shl, Shr) and prepare all nodes.
 853  */
 854 static void prepare_links_and_handle_rotl(ir_node *node, void *env)
 855 {
 856         lower_env_t *lenv = (lower_env_t*)env;
 857
 858         if (is_Rotl(node)) {
 859                 ir_mode  *mode = get_irn_op_mode(node);
 860                 ir_node  *right;
 861                 ir_node  *left, *shl, *shr, *ornode, *block, *sub, *c;
 862                 ir_mode  *omode, *rmode;
 863                 ir_graph *irg;
 864                 dbg_info *dbg;
 865                 optimization_state_t state;
 866
 867                 if (mode != lenv->high_signed && mode != lenv->high_unsigned) {
 868                         prepare_links(lenv, node);
 869                         return;
 870                 }
 871
 872                 /* replace the Rotl(x,y) by an Or(Shl(x,y), Shr(x,64-y)) */
 873                 right = get_Rotl_right(node);
 874                 irg   = get_irn_irg(node);
 875                 dbg   = get_irn_dbg_info(node);
 876                 omode = get_irn_mode(node);
 877                 left  = get_Rotl_left(node);
 878                 block = get_nodes_block(node);
 879                 shl   = new_rd_Shl(dbg, block, left, right, omode);
 880                 rmode = get_irn_mode(right);
 881                 c     = new_r_Const_long(irg, rmode, get_mode_size_bits(omode));
 882                 sub   = new_rd_Sub(dbg, block, c, right, rmode);
 883                 shr   = new_rd_Shr(dbg, block, left, sub, omode);
 884
 885                 /* switch optimization off here, or we will get the Rotl back */
 886                 save_optimization_state(&state);
 887                 set_opt_algebraic_simplification(0);
 888                 ornode = new_rd_Or(dbg, block, shl, shr, omode);
 889                 restore_optimization_state(&state);
 890
 891                 exchange(node, ornode);
 892
 893                 /* do lowering on the new nodes */
 894                 prepare_links(lenv, shl);
 895                 prepare_links(lenv, c);
 896                 prepare_links(lenv, sub);
 897                 prepare_links(lenv, shr);
 898                 prepare_links(lenv, ornode);
 899                 return;
 900         }
 901
 902         prepare_links(lenv, node);
 903 }
 904
 905 /**
 906  * Translate an Unop.
 907  *
 908  * Create an intrinsic Call.
 909  */
 910 static void lower_Unop(ir_node *node, ir_mode *mode, lower_env_t *env)
 911 {
 912         ir_node            *op       = get_unop_op(node);
 913         const node_entry_t *op_entry = get_node_entry(env, op);
 914         ir_node            *in[2]    = { op_entry->low_word, op_entry->high_word };
 915         dbg_info           *dbgi     = get_irn_dbg_info(node);
 916         ir_node            *block    = get_nodes_block(node);
 917         ir_graph           *irg      = get_irn_irg(block);
 918         ir_type            *mtp      = mode_is_signed(mode) ? unop_tp_s : unop_tp_u;
 919         ir_op              *irop     = get_irn_op(node);
 920         ir_node            *addr     = get_intrinsic_address(mtp, irop, mode, mode, env);
 921         ir_node            *nomem    = get_irg_no_mem(irg);
 922         ir_node            *call     = new_rd_Call(dbgi, block, nomem, addr, 2, in, mtp);
 923         ir_node            *resproj  = new_r_Proj(call, mode_T, pn_Call_T_result);
 924         ir_node            *res_low  = new_r_Proj(resproj, env->low_unsigned, 0);
 925         ir_node            *res_high = new_r_Proj(resproj, mode,              1);
 926         set_irn_pinned(call, get_irn_pinned(node));
 927         set_lowered(env, node, res_low, res_high);
 928 }
 929
 930 /**
 931  * Translate a logical binop.
 932  *
 933  * Create two logical binops.
 934  */
 935 static void lower_binop_logical(ir_node *node, ir_mode *mode, lower_env_t *env,
 936                                                                 ir_node *(*constr_rd)(dbg_info *db, ir_node *block, ir_node *op1, ir_node *op2, ir_mode *mode) )
 937 {
 938         ir_node            *left        = get_binop_left(node);
 939         ir_node            *right       = get_binop_right(node);
 940         const node_entry_t *left_entry  = get_node_entry(env, left);
 941         const node_entry_t *right_entry = get_node_entry(env, right);
 942         dbg_info           *dbgi        = get_irn_dbg_info(node);
 943         ir_node            *block       = get_nodes_block(node);
 944         ir_node            *res_low
 945                 = constr_rd(dbgi, block, left_entry->low_word, right_entry->low_word,
 946                             env->low_unsigned);
 947         ir_node            *res_high
 948                 = constr_rd(dbgi, block, left_entry->high_word, right_entry->high_word,
 949                             mode);
 950         set_lowered(env, node, res_low, res_high);
 951 }
 952
 953 static void lower_And(ir_node *node, ir_mode *mode, lower_env_t *env)
 954 {
 955         lower_binop_logical(node, mode, env, new_rd_And);
 956 }
 957
 958 static void lower_Or(ir_node *node, ir_mode *mode, lower_env_t *env)
 959 {
 960         lower_binop_logical(node, mode, env, new_rd_Or);
 961 }
 962
 963 static void lower_Eor(ir_node *node, ir_mode *mode, lower_env_t *env)
 964 {
 965         lower_binop_logical(node, mode, env, new_rd_Eor);
 966 }
 967
 968 /**
 969  * Translate a Not.
 970  *
 971  * Create two logical Nots.
 972  */
 973 static void lower_Not(ir_node *node, ir_mode *mode, lower_env_t *env)
 974 {
 975         ir_node            *op       = get_Not_op(node);
 976         const node_entry_t *op_entry = get_node_entry(env, op);
 977         dbg_info           *dbgi     = get_irn_dbg_info(node);
 978         ir_node            *block    = get_nodes_block(node);
 979         ir_node            *res_low
 980                 = new_rd_Not(dbgi, block, op_entry->low_word, env->low_unsigned);
 981         ir_node            *res_high
 982                 = new_rd_Not(dbgi, block, op_entry->high_word, mode);
 983         set_lowered(env, node, res_low, res_high);
 984 }
 985
 986 static bool is_equality_cmp_0(const ir_node *node)
 987 {
 988         ir_relation relation = get_Cmp_relation(node);
 989         ir_node    *left     = get_Cmp_left(node);
 990         ir_node    *right    = get_Cmp_right(node);
 991         ir_mode    *mode     = get_irn_mode(left);
 992
 993         /* this probably makes no sense if unordered is involved */
 994         assert(!mode_is_float(mode));
 995
 996         if (!is_Const(right) || !is_Const_null(right))
 997                 return false;
 998         if (relation == ir_relation_equal)
 999                 return true;
1000         if (mode_is_signed(mode)) {
1001                 return relation == ir_relation_less_greater;
1002         } else {
1003                 return relation == ir_relation_greater;
1004         }
1005 }
1006
1007 /**
1008  * Translate a Cond.
1009  */
1010 static void lower_Cond(ir_node *node, ir_mode *mode, lower_env_t *env)
1011 {
1012         ir_node *left, *right, *block;
1013         ir_node *sel = get_Cond_selector(node);
1014         ir_mode *m = get_irn_mode(sel);
1015         ir_mode *cmp_mode;
1016         const node_entry_t *lentry, *rentry;
1017         ir_node  *proj, *projT = NULL, *projF = NULL;
1018         ir_node  *new_bl, *irn;
1019         ir_node  *projHF, *projHT;
1020         ir_node  *dst_blk;
1021         ir_relation relation;
1022         ir_graph *irg;
1023         dbg_info *dbg;
1024
1025         (void) mode;
1026
1027         if (m != mode_b) {
1028                 if (m == env->high_signed || m == env->high_unsigned) {
1029                         /* bad we can't really handle Switch with 64bit offsets */
1030                         panic("Cond with 64bit jumptable not supported");
1031                 }
1032                 lower_node(env, sel);
1033                 return;
1034         }
1035
1036         if (!is_Cmp(sel)) {
1037                 lower_node(env, sel);
1038                 return;
1039         }
1040
1041         left     = get_Cmp_left(sel);
1042         cmp_mode = get_irn_mode(left);
1043         if (cmp_mode != env->high_signed && cmp_mode != env->high_unsigned) {
1044                 lower_node(env, sel);
1045                 return;
1046         }
1047
1048         right  = get_Cmp_right(sel);
1049         lower_node(env, left);
1050         lower_node(env, right);
1051         lentry = get_node_entry(env, left);
1052         rentry = get_node_entry(env, right);
1053
1054         /* all right, build the code */
1055         for (proj = (ir_node*)get_irn_link(node); proj;
1056              proj = (ir_node*)get_irn_link(proj)) {
1057                 long proj_nr = get_Proj_proj(proj);
1058
1059                 if (proj_nr == pn_Cond_true) {
1060                         assert(projT == NULL && "more than one Proj(true)");
1061                         projT = proj;
1062                 } else {
1063                         assert(proj_nr == pn_Cond_false);
1064                         assert(projF == NULL && "more than one Proj(false)");
1065                         projF = proj;
1066                 }
1067                 mark_irn_visited(proj);
1068         }
1069         assert(projT && projF);
1070
1071         /* create a new high compare */
1072         block    = get_nodes_block(node);
1073         irg      = get_Block_irg(block);
1074         dbg      = get_irn_dbg_info(sel);
1075         relation = get_Cmp_relation(sel);
1076
1077         if (is_equality_cmp_0(sel)) {
1078                 /* x ==/!= 0 ==> or(low,high) ==/!= 0 */
1079                 ir_mode *mode   = env->low_unsigned;
1080                 ir_node *low    = new_r_Conv(block, lentry->low_word, mode);
1081                 ir_node *high   = new_r_Conv(block, lentry->high_word, mode);
1082                 ir_node *ornode = new_rd_Or(dbg, block, low, high, mode);
1083                 ir_node *cmp    = new_rd_Cmp(dbg, block, ornode, new_r_Const_long(irg, mode, 0), relation);
1084                 set_Cond_selector(node, cmp);
1085                 return;
1086         }
1087
1088         if (relation == ir_relation_equal) {
1089                 /* simple case:a == b <==> a_h == b_h && a_l == b_l */
1090                 pmap_entry *entry = pmap_find(env->proj_2_block, projF);
1091
1092                 assert(entry);
1093                 dst_blk = (ir_node*)entry->value;
1094
1095                 irn = new_rd_Cmp(dbg, block, lentry->high_word, rentry->high_word,
1096                                  ir_relation_equal);
1097                 dbg = get_irn_dbg_info(node);
1098                 irn = new_rd_Cond(dbg, block, irn);
1099
1100                 projHF = new_r_Proj(irn, mode_X, pn_Cond_false);
1101                 mark_irn_visited(projHF);
1102                 exchange(projF, projHF);
1103
1104                 projHT = new_r_Proj(irn, mode_X, pn_Cond_true);
1105                 mark_irn_visited(projHT);
1106
1107                 new_bl = new_r_Block(irg, 1, &projHT);
1108
1109                 dbg = get_irn_dbg_info(sel);
1110                 irn = new_rd_Cmp(dbg, new_bl, lentry->low_word, rentry->low_word,
1111                                   ir_relation_equal);
1112                 dbg = get_irn_dbg_info(node);
1113                 irn = new_rd_Cond(dbg, new_bl, irn);
1114
1115                 proj = new_r_Proj(irn, mode_X, pn_Cond_false);
1116                 mark_irn_visited(proj);
1117                 add_block_cf_input(dst_blk, projHF, proj);
1118
1119                 proj = new_r_Proj(irn, mode_X, pn_Cond_true);
1120                 mark_irn_visited(proj);
1121                 exchange(projT, proj);
1122         } else if (relation == ir_relation_less_greater) {
1123                 /* simple case:a != b <==> a_h != b_h || a_l != b_l */
1124                 pmap_entry *entry = pmap_find(env->proj_2_block, projT);
1125
1126                 assert(entry);
1127                 dst_blk = (ir_node*)entry->value;
1128
1129                 irn = new_rd_Cmp(dbg, block, lentry->high_word, rentry->high_word,
1130                                  ir_relation_less_greater);
1131                 dbg = get_irn_dbg_info(node);
1132                 irn = new_rd_Cond(dbg, block, irn);
1133
1134                 projHT = new_r_Proj(irn, mode_X, pn_Cond_true);
1135                 mark_irn_visited(projHT);
1136                 exchange(projT, projHT);
1137
1138                 projHF = new_r_Proj(irn, mode_X, pn_Cond_false);
1139                 mark_irn_visited(projHF);
1140
1141                 new_bl = new_r_Block(irg, 1, &projHF);
1142
1143                 dbg = get_irn_dbg_info(sel);
1144                 irn = new_rd_Cmp(dbg, new_bl, lentry->low_word, rentry->low_word,
1145                                  ir_relation_less_greater);
1146                 dbg = get_irn_dbg_info(node);
1147                 irn = new_rd_Cond(dbg, new_bl, irn);
1148
1149                 proj = new_r_Proj(irn, mode_X, pn_Cond_true);
1150                 mark_irn_visited(proj);
1151                 add_block_cf_input(dst_blk, projHT, proj);
1152
1153                 proj = new_r_Proj(irn, mode_X, pn_Cond_false);
1154                 mark_irn_visited(proj);
1155                 exchange(projF, proj);
1156         } else {
1157                 /* a rel b <==> a_h REL b_h || (a_h == b_h && a_l rel b_l) */
1158                 ir_node *dstT, *dstF, *newbl_eq, *newbl_l;
1159                 pmap_entry *entry;
1160
1161                 entry = pmap_find(env->proj_2_block, projT);
1162                 assert(entry);
1163                 dstT = (ir_node*)entry->value;
1164
1165                 entry = pmap_find(env->proj_2_block, projF);
1166                 assert(entry);
1167                 dstF = (ir_node*)entry->value;
1168
1169                 irn = new_rd_Cmp(dbg, block, lentry->high_word, rentry->high_word,
1170                                  relation & ~ir_relation_equal);
1171                 dbg = get_irn_dbg_info(node);
1172                 irn = new_rd_Cond(dbg, block, irn);
1173
1174                 projHT = new_r_Proj(irn, mode_X, pn_Cond_true);
1175                 mark_irn_visited(projHT);
1176                 exchange(projT, projHT);
1177                 projT = projHT;
1178
1179                 projHF = new_r_Proj(irn, mode_X, pn_Cond_false);
1180                 mark_irn_visited(projHF);
1181
1182                 newbl_eq = new_r_Block(irg, 1, &projHF);
1183
1184                 irn = new_rd_Cmp(dbg, block, lentry->high_word, rentry->high_word,
1185                                  ir_relation_equal);
1186                 irn = new_rd_Cond(dbg, newbl_eq, irn);
1187
1188                 proj = new_r_Proj(irn, mode_X, pn_Cond_false);
1189                 mark_irn_visited(proj);
1190                 exchange(projF, proj);
1191                 projF = proj;
1192
1193                 proj = new_r_Proj(irn, mode_X, pn_Cond_true);
1194                 mark_irn_visited(proj);
1195
1196                 newbl_l = new_r_Block(irg, 1, &proj);
1197
1198                 dbg = get_irn_dbg_info(sel);
1199                 irn = new_rd_Cmp(dbg, newbl_l, lentry->low_word, rentry->low_word,
1200                                  relation);
1201                 dbg = get_irn_dbg_info(node);
1202                 irn = new_rd_Cond(dbg, newbl_l, irn);
1203
1204                 proj = new_r_Proj(irn, mode_X, pn_Cond_true);
1205                 mark_irn_visited(proj);
1206                 add_block_cf_input(dstT, projT, proj);
1207
1208                 proj = new_r_Proj(irn, mode_X, pn_Cond_false);
1209                 mark_irn_visited(proj);
1210                 add_block_cf_input(dstF, projF, proj);
1211         }
1212
1213         /* we have changed the control flow */
1214         env->flags |= CF_CHANGED;
1215 }
1216
1217 /**
1218  * Translate a Conv to higher_signed
1219  */
1220 static void lower_Conv_to_Ll(ir_node *node, lower_env_t *env)
1221 {
1222         ir_mode  *omode        = get_irn_mode(node);
1223         ir_node  *op           = get_Conv_op(node);
1224         ir_mode  *imode        = get_irn_mode(op);
1225         ir_graph *irg          = get_irn_irg(node);
1226         ir_node  *block        = get_nodes_block(node);
1227         dbg_info *dbg          = get_irn_dbg_info(node);
1228         ir_node  *res_low;
1229         ir_node  *res_high;
1230
1231         ir_mode  *low_unsigned = env->low_unsigned;
1232         ir_mode  *low_signed
1233                 = mode_is_signed(omode) ? env->low_signed : low_unsigned;
1234
1235         if (mode_is_int(imode) || mode_is_reference(imode)) {
1236                 if (imode == env->high_signed || imode == env->high_unsigned) {
1237                         /* a Conv from Lu to Ls or Ls to Lu */
1238                         const node_entry_t *op_entry = get_node_entry(env, op);
1239                         res_low  = op_entry->low_word;
1240                         res_high = new_rd_Conv(dbg, block, op_entry->high_word, low_signed);
1241                 } else {
1242                         /* simple case: create a high word */
1243                         if (imode != low_unsigned)
1244                                 op = new_rd_Conv(dbg, block, op, low_unsigned);
1245
1246                         res_low = op;
1247
1248                         if (mode_is_signed(imode)) {
1249                                 int      c       = get_mode_size_bits(low_signed) - 1;
1250                                 ir_node *cnst    = new_r_Const_long(irg, low_unsigned, c);
1251                                 if (get_irn_mode(op) != low_signed)
1252                                         op = new_rd_Conv(dbg, block, op, low_signed);
1253                                 res_high = new_rd_Shrs(dbg, block, op, cnst, low_signed);
1254                         } else {
1255                                 res_high = new_r_Const(irg, get_mode_null(low_signed));
1256                         }
1257                 }
1258         } else if (imode == mode_b) {
1259                 res_low  = new_rd_Conv(dbg, block, op, low_unsigned);
1260                 res_high = new_r_Const(irg, get_mode_null(low_signed));
1261         } else {
1262                 ir_node *irn, *call;
1263                 ir_type *mtp = get_conv_type(imode, omode, env);
1264
1265                 irn = get_intrinsic_address(mtp, get_irn_op(node), imode, omode, env);
1266                 call = new_rd_Call(dbg, block, get_irg_no_mem(irg), irn, 1, &op, mtp);
1267                 set_irn_pinned(call, get_irn_pinned(node));
1268                 irn = new_r_Proj(call, mode_T, pn_Call_T_result);
1269
1270                 res_low  = new_r_Proj(irn, low_unsigned, 0);
1271                 res_high = new_r_Proj(irn, low_signed, 1);
1272         }
1273         set_lowered(env, node, res_low, res_high);
1274 }
1275
1276 /**
1277  * Translate a Conv from higher_unsigned
1278  */
1279 static void lower_Conv_from_Ll(ir_node *node, lower_env_t *env)
1280 {
1281         ir_node            *op    = get_Conv_op(node);
1282         ir_mode            *omode = get_irn_mode(node);
1283         ir_node            *block = get_nodes_block(node);
1284         dbg_info           *dbg   = get_irn_dbg_info(node);
1285         ir_graph           *irg   = get_irn_irg(node);
1286         const node_entry_t *entry = get_node_entry(env, op);
1287
1288         if (mode_is_int(omode) || mode_is_reference(omode)) {
1289                 op = entry->low_word;
1290
1291                 /* simple case: create a high word */
1292                 if (omode != env->low_unsigned)
1293                         op = new_rd_Conv(dbg, block, op, omode);
1294
1295                 set_Conv_op(node, op);
1296         } else if (omode == mode_b) {
1297                 /* llu ? true : false  <=> (low|high) ? true : false */
1298                 ir_mode *mode   = env->low_unsigned;
1299                 ir_node *ornode = new_rd_Or(dbg, block, entry->low_word,
1300                                             entry->high_word, mode);
1301                 set_Conv_op(node, ornode);
1302         } else {
1303                 ir_node *irn, *call, *in[2];
1304                 ir_mode *imode = get_irn_mode(op);
1305                 ir_type *mtp   = get_conv_type(imode, omode, env);
1306
1307                 irn   = get_intrinsic_address(mtp, get_irn_op(node), imode, omode, env);
1308                 in[0] = entry->low_word;
1309                 in[1] = entry->high_word;
1310
1311                 call = new_rd_Call(dbg, block, get_irg_no_mem(irg), irn, 2, in, mtp);
1312                 set_irn_pinned(call, get_irn_pinned(node));
1313                 irn = new_r_Proj(call, mode_T, pn_Call_T_result);
1314
1315                 exchange(node, new_r_Proj(irn, omode, 0));
1316         }
1317 }
1318
1319 /**
1320  * lower Cmp
1321  */
1322 static void lower_Cmp(ir_node *cmp, ir_mode *m, lower_env_t *env)
1323 {
1324         ir_node  *l    = get_Cmp_left(cmp);
1325         ir_mode  *mode = get_irn_mode(l);
1326         ir_node  *r, *low, *high, *t, *res;
1327         ir_relation relation;
1328         ir_node  *block;
1329         dbg_info *dbg;
1330         const node_entry_t *lentry;
1331         const node_entry_t *rentry;
1332         (void) m;
1333
1334         if (mode != env->high_signed && mode != env->high_unsigned)
1335                 return;
1336
1337         r        = get_Cmp_right(cmp);
1338         lentry   = get_node_entry(env, l);
1339         rentry   = get_node_entry(env, r);
1340         relation = get_Cmp_relation(cmp);
1341         block    = get_nodes_block(cmp);
1342         dbg      = get_irn_dbg_info(cmp);
1343
1344         /* easy case for x ==/!= 0 (see lower_Cond for details) */
1345         if (is_equality_cmp_0(cmp)) {
1346                 ir_graph *irg     = get_irn_irg(cmp);
1347                 ir_mode  *mode    = env->low_unsigned;
1348                 ir_node  *low     = new_r_Conv(block, lentry->low_word, mode);
1349                 ir_node  *high    = new_r_Conv(block, lentry->high_word, mode);
1350                 ir_node  *ornode  = new_rd_Or(dbg, block, low, high, mode);
1351                 ir_node  *new_cmp = new_rd_Cmp(dbg, block, ornode, new_r_Const_long(irg, mode, 0), relation);
1352                 exchange(cmp, new_cmp);
1353                 return;
1354         }
1355
1356         if (relation == ir_relation_equal) {
1357                 /* simple case:a == b <==> a_h == b_h && a_l == b_l */
1358                 low  = new_rd_Cmp(dbg, block, lentry->low_word, rentry->low_word,
1359                                   relation);
1360                 high = new_rd_Cmp(dbg, block, lentry->high_word, rentry->high_word,
1361                                   relation);
1362                 res  = new_rd_And(dbg, block, low, high, mode_b);
1363         } else if (relation == ir_relation_less_greater) {
1364                 /* simple case:a != b <==> a_h != b_h || a_l != b_l */
1365                 low  = new_rd_Cmp(dbg, block, lentry->low_word, rentry->low_word,
1366                                   relation);
1367                 high = new_rd_Cmp(dbg, block, lentry->high_word, rentry->high_word,
1368                                   relation);
1369                 res = new_rd_Or(dbg, block, low, high, mode_b);
1370         } else {
1371                 /* a rel b <==> a_h REL b_h || (a_h == b_h && a_l rel b_l) */
1372                 ir_node *high1 = new_rd_Cmp(dbg, block, lentry->high_word,
1373                         rentry->high_word, relation & ~ir_relation_equal);
1374                 low  = new_rd_Cmp(dbg, block, lentry->low_word, rentry->low_word,
1375                                   relation);
1376                 high = new_rd_Cmp(dbg, block, lentry->high_word, rentry->high_word,
1377                                   ir_relation_equal);
1378                 t = new_rd_And(dbg, block, low, high, mode_b);
1379                 res = new_rd_Or(dbg, block, high1, t, mode_b);
1380         }
1381         exchange(cmp, res);
1382 }
1383
1384 /**
1385  * Translate a Conv.
1386  */
1387 static void lower_Conv(ir_node *node, ir_mode *mode, lower_env_t *env)
1388 {
1389         mode = get_irn_mode(node);
1390
1391         if (mode == env->high_signed || mode == env->high_unsigned) {
1392                 lower_Conv_to_Ll(node, env);
1393         } else {
1394                 ir_mode *op_mode = get_irn_mode(get_Conv_op(node));
1395
1396                 if (op_mode == env->high_signed || op_mode == env->high_unsigned) {
1397                         lower_Conv_from_Ll(node, env);
1398                 }
1399         }
1400 }
1401
1402 /**
1403  * Remember the new argument index of this value type entity in the lowered
1404  * method type.
1405  *
1406  * @param ent  the entity
1407  * @param pos  the argument index of this entity
1408  */
1409 static inline void set_entity_arg_idx(ir_entity *ent, size_t pos)
1410 {
1411         set_entity_link(ent, INT_TO_PTR(pos));
1412 }
1413
1414 /**
1415  * Retrieve the argument index of a value type entity.
1416  *
1417  * @param ent  the entity
1418  */
1419 static size_t get_entity_arg_idx(const ir_entity *ent) {
1420         return PTR_TO_INT(get_entity_link(ent));
1421 }
1422
1423 /**
1424  * Lower the method type.
1425  *
1426  * @param env  the lower environment
1427  * @param mtp  the method type to lower
1428  *
1429  * @return the lowered type
1430  */
1431 static ir_type *lower_mtp(lower_env_t *env, ir_type *mtp)
1432 {
1433         pmap_entry *entry;
1434         ir_type    *res, *value_type;
1435
1436         entry = pmap_find(lowered_type, mtp);
1437         if (! entry) {
1438                 size_t i, orig_n_params, orig_n_res, n_param, n_res;
1439
1440                 /* count new number of params */
1441                 n_param = orig_n_params = get_method_n_params(mtp);
1442                 for (i = orig_n_params; i > 0;) {
1443                         ir_type *tp = get_method_param_type(mtp, --i);
1444
1445                         if (is_Primitive_type(tp)) {
1446                                 ir_mode *mode = get_type_mode(tp);
1447
1448                                 if (mode == env->high_signed ||
1449                                         mode == env->high_unsigned)
1450                                         ++n_param;
1451                         }
1452                 }
1453
1454                 /* count new number of results */
1455                 n_res = orig_n_res = get_method_n_ress(mtp);
1456                 for (i = orig_n_res; i > 0;) {
1457                         ir_type *tp = get_method_res_type(mtp, --i);
1458
1459                         if (is_Primitive_type(tp)) {
1460                                 ir_mode *mode = get_type_mode(tp);
1461
1462                                 if (mode == env->high_signed ||
1463                                         mode == env->high_unsigned)
1464                                         ++n_res;
1465                         }
1466                 }
1467
1468                 res = new_type_method(n_param, n_res);
1469
1470                 /* set param types and result types */
1471                 for (i = n_param = 0; i < orig_n_params; ++i) {
1472                         ir_type *tp = get_method_param_type(mtp, i);
1473
1474                         if (is_Primitive_type(tp)) {
1475                                 ir_mode *mode = get_type_mode(tp);
1476
1477                                 if (mode == env->high_signed) {
1478                                         set_method_param_type(res, n_param++, tp_u);
1479                                         set_method_param_type(res, n_param++, tp_s);
1480                                 } else if (mode == env->high_unsigned) {
1481                                         set_method_param_type(res, n_param++, tp_u);
1482                                         set_method_param_type(res, n_param++, tp_u);
1483                                 } else {
1484                                         set_method_param_type(res, n_param++, tp);
1485                                 }
1486                         } else {
1487                                 set_method_param_type(res, n_param++, tp);
1488                         }
1489                 }
1490                 for (i = n_res = 0; i < orig_n_res; ++i) {
1491                         ir_type *tp = get_method_res_type(mtp, i);
1492
1493                         if (is_Primitive_type(tp)) {
1494                                 ir_mode *mode = get_type_mode(tp);
1495
1496                                 if (mode == env->high_signed) {
1497                                         set_method_res_type(res, n_res++, tp_u);
1498                                         set_method_res_type(res, n_res++, tp_s);
1499                                 } else if (mode == env->high_unsigned) {
1500                                         set_method_res_type(res, n_res++, tp_u);
1501                                         set_method_res_type(res, n_res++, tp_u);
1502                                 } else {
1503                                         set_method_res_type(res, n_res++, tp);
1504                                 }
1505                         } else {
1506                                 set_method_res_type(res, n_res++, tp);
1507                         }
1508                 }
1509                 set_lowered_type(mtp, res);
1510                 pmap_insert(lowered_type, mtp, res);
1511
1512                 value_type = get_method_value_param_type(mtp);
1513                 if (value_type != NULL) {
1514                         /* this creates a new value parameter type */
1515                         (void)get_method_value_param_ent(res, 0);
1516
1517                         /* set new param positions for all entities of the value type */
1518                         for (i = n_param = 0; i < orig_n_params; ++i) {
1519                                 ir_type   *tp  = get_method_param_type(mtp, i);
1520                                 ir_entity *ent = get_method_value_param_ent(mtp, i);
1521
1522                                 set_entity_arg_idx(ent, n_param);
1523                                 if (is_Primitive_type(tp)) {
1524                                         ir_mode *mode = get_type_mode(tp);
1525
1526                                         if (mode == env->high_signed || mode == env->high_unsigned) {
1527                                                 n_param += 2;
1528                                                 continue;
1529                                         }
1530                                 }
1531                                 ++n_param;
1532                         }
1533
1534                         set_lowered_type(value_type, get_method_value_param_type(res));
1535                 }
1536         } else {
1537                 res = (ir_type*)entry->value;
1538         }
1539         return res;
1540 }
1541
1542 /**
1543  * Translate a Return.
1544  */
1545 static void lower_Return(ir_node *node, ir_mode *mode, lower_env_t *env)
1546 {
1547         ir_graph  *irg = get_irn_irg(node);
1548         ir_entity *ent = get_irg_entity(irg);
1549         ir_type   *mtp = get_entity_type(ent);
1550         ir_node  **in;
1551         size_t     i, j, n;
1552         int        need_conv = 0;
1553         (void) mode;
1554
1555         /* check if this return must be lowered */
1556         for (i = 0, n = get_Return_n_ress(node); i < n; ++i) {
1557                 ir_node *pred = get_Return_res(node, i);
1558                 ir_mode *mode = get_irn_op_mode(pred);
1559
1560                 if (mode == env->high_signed || mode == env->high_unsigned)
1561                         need_conv = 1;
1562         }
1563         if (! need_conv)
1564                 return;
1565
1566         ent = get_irg_entity(irg);
1567         mtp = get_entity_type(ent);
1568
1569         mtp = lower_mtp(env, mtp);
1570         set_entity_type(ent, mtp);
1571
1572         /* create a new in array */
1573         NEW_ARR_A(ir_node *, in, get_method_n_ress(mtp) + 1);
1574         in[0] = get_Return_mem(node);
1575
1576         for (j = i = 0, n = get_Return_n_ress(node); i < n; ++i) {
1577                 ir_node *pred      = get_Return_res(node, i);
1578                 ir_mode *pred_mode = get_irn_mode(pred);
1579
1580                 if (pred_mode == env->high_signed || pred_mode == env->high_unsigned) {
1581                         const node_entry_t *entry = get_node_entry(env, pred);
1582                         in[++j] = entry->low_word;
1583                         in[++j] = entry->high_word;
1584                 } else {
1585                         in[++j] = pred;
1586                 }
1587         }
1588
1589         set_irn_in(node, j+1, in);
1590 }
1591
1592 /**
1593  * Translate the parameters.
1594  */
1595 static void lower_Start(ir_node *node, ir_mode *mode, lower_env_t *env)
1596 {
1597         ir_graph  *irg = get_irn_irg(node);
1598         ir_entity *ent = get_irg_entity(irg);
1599         ir_type   *tp  = get_entity_type(ent);
1600         long      *new_projs;
1601         size_t    i, j, n_params;
1602         int       rem;
1603         ir_node   *proj, *args;
1604         (void) mode;
1605
1606         if (!mtp_must_be_lowered(env, tp)) return;
1607
1608         n_params = get_method_n_params(tp);
1609
1610         NEW_ARR_A(long, new_projs, n_params);
1611
1612         /* Calculate mapping of proj numbers in new_projs */
1613         for (i = j = 0; i < n_params; ++i, ++j) {
1614                 ir_type *ptp = get_method_param_type(tp, i);
1615
1616                 new_projs[i] = j;
1617                 if (is_Primitive_type(ptp)) {
1618                         ir_mode *mode = get_type_mode(ptp);
1619
1620                         if (mode == env->high_signed ||
1621                                 mode == env->high_unsigned)
1622                                 ++j;
1623                 }
1624         }
1625
1626         /* lower method type */
1627         tp = lower_mtp(env, tp);
1628         set_entity_type(ent, tp);
1629
1630         /* switch off optimization for new Proj nodes or they might be CSE'ed
1631            with not patched one's */
1632         rem = get_optimize();
1633         set_optimize(0);
1634
1635         /* fix all Proj's and create new ones */
1636         args = get_irg_args(irg);
1637         for (proj = (ir_node*)get_irn_link(node); proj;
1638              proj = (ir_node*)get_irn_link(proj)) {
1639                 ir_node *pred = get_Proj_pred(proj);
1640                 long proj_nr;
1641                 ir_mode *mode;
1642                 ir_mode *mode_l;
1643                 ir_mode *mode_h;
1644                 ir_node *res_low;
1645                 ir_node *res_high;
1646                 dbg_info *dbg;
1647
1648                 /* do not visit this node again */
1649                 mark_irn_visited(proj);
1650
1651                 if (pred != args)
1652                         continue;
1653
1654                 proj_nr = get_Proj_proj(proj);
1655                 set_Proj_proj(proj, new_projs[proj_nr]);
1656
1657                 mode = get_irn_mode(proj);
1658                 mode_l = env->low_unsigned;
1659                 if (mode == env->high_signed) {
1660                         mode_h = env->low_signed;
1661                 } else if (mode == env->high_unsigned) {
1662                         mode_h = env->low_unsigned;
1663                 } else {
1664                         continue;
1665                 }
1666
1667                 dbg = get_irn_dbg_info(proj);
1668                 res_low  = new_rd_Proj(dbg, args, mode_l, new_projs[proj_nr]);
1669                 res_high = new_rd_Proj(dbg, args, mode_h, new_projs[proj_nr] + 1);
1670                 set_lowered(env, proj, res_low, res_high);
1671         }
1672         set_optimize(rem);
1673 }
1674
1675 /**
1676  * Translate a Call.
1677  */
1678 static void lower_Call(ir_node *node, ir_mode *mode, lower_env_t *env)
1679 {
1680         ir_type  *tp = get_Call_type(node);
1681         ir_node  **in, *proj, *results;
1682         size_t   n_params, n_res;
1683         bool     need_lower = false;
1684         size_t   i, j;
1685         size_t   p;
1686         long     *res_numbers = NULL;
1687         (void) mode;
1688
1689         n_params = get_method_n_params(tp);
1690         for (p = 0; p < n_params; ++p) {
1691                 ir_type *ptp = get_method_param_type(tp, p);
1692
1693                 if (is_Primitive_type(ptp)) {
1694                         ir_mode *mode = get_type_mode(ptp);
1695
1696                         if (mode == env->high_signed || mode == env->high_unsigned) {
1697                                 need_lower = true;
1698                                 break;
1699                         }
1700                 }
1701         }
1702         n_res = get_method_n_ress(tp);
1703         if (n_res > 0) {
1704                 NEW_ARR_A(long, res_numbers, n_res);
1705
1706                 for (i = j = 0; i < n_res; ++i, ++j) {
1707                         ir_type *ptp = get_method_res_type(tp, i);
1708
1709                         res_numbers[i] = j;
1710                         if (is_Primitive_type(ptp)) {
1711                                 ir_mode *mode = get_type_mode(ptp);
1712
1713                                 if (mode == env->high_signed || mode == env->high_unsigned) {
1714                                         need_lower = true;
1715                                         ++j;
1716                                 }
1717                         }
1718                 }
1719         }
1720
1721         if (! need_lower)
1722                 return;
1723
1724         /* let's lower it */
1725         tp = lower_mtp(env, tp);
1726         set_Call_type(node, tp);
1727
1728         NEW_ARR_A(ir_node *, in, get_method_n_params(tp) + 2);
1729
1730         in[0] = get_Call_mem(node);
1731         in[1] = get_Call_ptr(node);
1732
1733         for (j = 2, i = 0; i < n_params; ++i) {
1734                 ir_node *pred      = get_Call_param(node, i);
1735                 ir_mode *pred_mode = get_irn_mode(pred);
1736
1737                 if (pred_mode == env->high_signed || pred_mode == env->high_unsigned) {
1738                         const node_entry_t *pred_entry = get_node_entry(env, pred);
1739                         in[j++] = pred_entry->low_word;
1740                         in[j++] = pred_entry->high_word;
1741                 } else {
1742                         in[j++] = pred;
1743                 }
1744         }
1745
1746         set_irn_in(node, j, in);
1747
1748         /* fix the results */
1749         results = NULL;
1750         for (proj = (ir_node*)get_irn_link(node); proj;
1751              proj = (ir_node*)get_irn_link(proj)) {
1752                 long proj_nr = get_Proj_proj(proj);
1753
1754                 if (proj_nr == pn_Call_T_result && get_Proj_pred(proj) == node) {
1755                         /* found the result proj */
1756                         results = proj;
1757                         break;
1758                 }
1759         }
1760
1761         if (results != NULL) {    /* there are results */
1762                 int rem = get_optimize();
1763
1764                 /* switch off optimization for new Proj nodes or they might be CSE'ed
1765                    with not patched one's */
1766                 set_optimize(0);
1767                 for (proj = (ir_node*)get_irn_link(results); proj; proj = (ir_node*)get_irn_link(proj)) {
1768                         if (get_Proj_pred(proj) == results) {
1769                                 long      proj_nr   = get_Proj_proj(proj);
1770                                 ir_mode  *proj_mode = get_irn_mode(proj);
1771                                 ir_mode  *mode_l;
1772                                 ir_mode  *mode_h;
1773                                 ir_node  *res_low;
1774                                 ir_node  *res_high;
1775                                 dbg_info *dbg;
1776
1777                                 /* found a result */
1778                                 mark_irn_visited(proj);
1779
1780                                 set_Proj_proj(proj, res_numbers[proj_nr]);
1781
1782                                 mode_l = env->low_unsigned;
1783                                 if (proj_mode == env->high_signed) {
1784                                         mode_h = env->low_signed;
1785                                 } else if (proj_mode == env->high_unsigned) {
1786                                         mode_h = env->low_unsigned;
1787                                 } else {
1788                                         continue;
1789                                 }
1790
1791                                 dbg      = get_irn_dbg_info(proj);
1792                                 res_low  = new_rd_Proj(dbg, results, mode_l, res_numbers[proj_nr]);
1793                                 res_high = new_rd_Proj(dbg, results, mode_h, res_numbers[proj_nr] + 1);
1794                                 set_lowered(env, proj, res_low, res_high);
1795                         }
1796                 }
1797                 set_optimize(rem);
1798         }
1799 }
1800
1801 /**
1802  * Translate an Unknown into two.
1803  */
1804 static void lower_Unknown(ir_node *node, ir_mode *mode, lower_env_t *env)
1805 {
1806         ir_mode  *low_mode = env->low_unsigned;
1807         ir_graph *irg      = get_irn_irg(node);
1808         ir_node  *res_low  = new_r_Unknown(irg, low_mode);
1809         ir_node  *res_high = new_r_Unknown(irg, mode);
1810         set_lowered(env, node, res_low, res_high);
1811 }
1812
1813 /**
1814  * Translate a Phi.
1815  *
1816  * First step: just create two templates
1817  */
1818 static void lower_Phi(lower_env_t *env, ir_node *phi)
1819 {
1820         ir_mode  *mode = get_irn_mode(phi);
1821         int       i;
1822         int       arity;
1823         ir_node **in_l;
1824         ir_node **in_h;
1825         ir_node  *unk_l;
1826         ir_node  *unk_h;
1827         ir_node  *phi_l;
1828         ir_node  *phi_h;
1829         dbg_info *dbg;
1830         ir_node  *block;
1831         ir_graph *irg;
1832         ir_mode  *mode_l;
1833         ir_mode  *mode_h;
1834
1835         /* enqueue predecessors */
1836         arity = get_Phi_n_preds(phi);
1837         for (i = 0; i < arity; ++i) {
1838                 ir_node *pred = get_Phi_pred(phi, i);
1839                 pdeq_putr(env->waitq, pred);
1840         }
1841
1842         if (mode != env->high_signed && mode != env->high_unsigned)
1843                 return;
1844
1845         /* first create a new in array */
1846         NEW_ARR_A(ir_node *, in_l, arity);
1847         NEW_ARR_A(ir_node *, in_h, arity);
1848         irg    = get_irn_irg(phi);
1849         mode_l = env->low_unsigned;
1850         mode_h = mode == env->high_signed ? env->low_signed : env->low_unsigned;
1851         unk_l  = new_r_Dummy(irg, mode_l);
1852         unk_h  = new_r_Dummy(irg, mode_h);
1853         for (i = 0; i < arity; ++i) {
1854                 in_l[i] = unk_l;
1855                 in_h[i] = unk_h;
1856         }
1857
1858         dbg   = get_irn_dbg_info(phi);
1859         block = get_nodes_block(phi);
1860         phi_l = new_rd_Phi(dbg, block, arity, in_l, mode_l);
1861         phi_h = new_rd_Phi(dbg, block, arity, in_h, mode_h);
1862
1863         set_lowered(env, phi, phi_l, phi_h);
1864
1865         /* remember that we need to fixup the predecessors later */
1866         ARR_APP1(ir_node*, env->lowered_phis, phi);
1867
1868         /* Don't forget to link the new Phi nodes into the block.
1869          * Beware that some Phis might be optimized away. */
1870         if (is_Phi(phi_l))
1871                 add_Block_phi(block, phi_l);
1872         if (is_Phi(phi_h))
1873                 add_Block_phi(block, phi_h);
1874 }
1875
1876 static void fixup_phi(lower_env_t *env, ir_node *phi)
1877 {
1878         const node_entry_t *entry = get_node_entry(env, phi);
1879         ir_node            *phi_l = entry->low_word;
1880         ir_node            *phi_h = entry->high_word;
1881         int                 arity = get_Phi_n_preds(phi);
1882         int                 i;
1883
1884         /* exchange phi predecessors which are lowered by now */
1885         for (i = 0; i < arity; ++i) {
1886                 ir_node            *pred       = get_Phi_pred(phi, i);
1887                 const node_entry_t *pred_entry = get_node_entry(env, pred);
1888
1889                 set_Phi_pred(phi_l, i, pred_entry->low_word);
1890                 set_Phi_pred(phi_h, i, pred_entry->high_word);
1891         }
1892 }
1893
1894 /**
1895  * Translate a Mux.
1896  */
1897 static void lower_Mux(ir_node *mux, ir_mode *mode, lower_env_t *env)
1898 {
1899         ir_node            *truen       = get_Mux_true(mux);
1900         ir_node            *falsen      = get_Mux_false(mux);
1901         ir_node            *sel         = get_Mux_sel(mux);
1902         const node_entry_t *true_entry  = get_node_entry(env, truen);
1903         const node_entry_t *false_entry = get_node_entry(env, falsen);
1904         ir_node            *true_l      = true_entry->low_word;
1905         ir_node            *true_h      = true_entry->high_word;
1906         ir_node            *false_l     = false_entry->low_word;
1907         ir_node            *false_h     = false_entry->high_word;
1908         dbg_info           *dbgi        = get_irn_dbg_info(mux);
1909         ir_node            *block       = get_nodes_block(mux);
1910         ir_node            *res_low
1911                 = new_rd_Mux(dbgi, block, sel, false_l, true_l, env->low_unsigned);
1912         ir_node            *res_high
1913                 = new_rd_Mux(dbgi, block, sel, false_h, true_h, mode);
1914         set_lowered(env, mux, res_low, res_high);
1915 }
1916
1917 /**
1918  * Translate an ASM node.
1919  */
1920 static void lower_ASM(ir_node *asmn, ir_mode *mode, lower_env_t *env)
1921 {
1922         ir_mode           *high_signed        = env->high_signed;
1923         ir_mode           *high_unsigned      = env->high_unsigned;
1924         int                n_outs             = get_ASM_n_output_constraints(asmn);
1925         ir_asm_constraint *output_constraints = get_ASM_output_constraints(asmn);
1926         ir_asm_constraint *input_constraints  = get_ASM_input_constraints(asmn);
1927         unsigned           n_64bit_outs       = 0;
1928         int      i;
1929         ir_node *n;
1930
1931         (void)mode;
1932
1933         for (i = get_irn_arity(asmn) - 1; i >= 0; --i) {
1934                 ir_node *op      = get_irn_n(asmn, i);
1935                 ir_mode *op_mode = get_irn_mode(op);
1936                 if (op_mode == high_signed || op_mode == high_unsigned) {
1937                         panic("lowering ASM 64bit input unimplemented");
1938                 }
1939         }
1940
1941         for (i = 0; i < n_outs; ++i) {
1942                 const ir_asm_constraint *constraint = &output_constraints[i];
1943                 if (constraint->mode == high_signed || constraint->mode == high_unsigned) {
1944                         const char *constr = get_id_str(constraint->constraint);
1945                         ++n_64bit_outs;
1946                         /* TODO: How to do this architecture neutral? This is very
1947                          * i386 specific... */
1948                         if (constr[0] != '=' || constr[1] != 'A') {
1949                                 panic("lowering ASM 64bit output only supports '=A' currently");
1950                         }
1951                 }
1952         }
1953
1954         if (n_64bit_outs == 0)
1955                 return;
1956
1957         {
1958                 dbg_info          *dbgi       = get_irn_dbg_info(asmn);
1959                 ir_node           *block      = get_nodes_block(asmn);
1960                 int                arity      = get_irn_arity(asmn);
1961                 ir_node          **in         = get_irn_in(asmn) + 1;
1962                 int                n_outs     = get_ASM_n_output_constraints(asmn);
1963                 int                new_n_outs = 0;
1964                 int                n_clobber  = get_ASM_n_clobbers(asmn);
1965                 long              *proj_map   = ALLOCAN(long, n_outs);
1966                 ident            **clobbers   = get_ASM_clobbers(asmn);
1967                 ident             *asm_text   = get_ASM_text(asmn);
1968                 ir_asm_constraint *new_outputs
1969                         = ALLOCAN(ir_asm_constraint, n_outs+n_64bit_outs);
1970                 ir_node           *new_asm;
1971
1972                 for (i = 0; i < n_outs; ++i) {
1973                         const ir_asm_constraint *constraint = &output_constraints[i];
1974                         if (constraint->mode == high_signed || constraint->mode == high_unsigned) {
1975                                 new_outputs[new_n_outs].pos        = constraint->pos;
1976                                 new_outputs[new_n_outs].constraint = new_id_from_str("=a");
1977                                 new_outputs[new_n_outs].mode       = env->low_unsigned;
1978                                 proj_map[i] = new_n_outs;
1979                                 ++new_n_outs;
1980                                 new_outputs[new_n_outs].pos        = constraint->pos;
1981                                 new_outputs[new_n_outs].constraint = new_id_from_str("=d");
1982                                 if (constraint->mode == high_signed)
1983                                         new_outputs[new_n_outs].mode = env->low_signed;
1984                                 else
1985                                         new_outputs[new_n_outs].mode = env->low_unsigned;
1986                                 ++new_n_outs;
1987                         } else {
1988                                 new_outputs[new_n_outs] = *constraint;
1989                                 proj_map[i] = new_n_outs;
1990                                 ++new_n_outs;
1991                         }
1992                 }
1993                 assert(new_n_outs == n_outs+(int)n_64bit_outs);
1994
1995                 new_asm = new_rd_ASM(dbgi, block, arity, in, input_constraints,
1996                                      new_n_outs, new_outputs, n_clobber, clobbers,
1997                                      asm_text);
1998
1999                 for (n = asmn;;) {
2000                         long pn;
2001                         ir_mode *proj_mode;
2002                         n = (ir_node*)get_irn_link(n);
2003                         if (n == NULL)
2004                                 break;
2005                         proj_mode = get_irn_mode(n);
2006                         pn = get_Proj_proj(n);
2007                         if (pn < n_outs)
2008                                 pn = proj_map[pn];
2009                         else
2010                                 pn = new_n_outs + pn - n_outs;
2011
2012                         if (proj_mode == high_signed || proj_mode == high_unsigned) {
2013                                 ir_mode *high_mode
2014                                         = proj_mode == high_signed ? env->low_signed : env->low_unsigned;
2015                                 ir_node *np_low  = new_r_Proj(new_asm, env->low_unsigned, pn);
2016                                 ir_node *np_high = new_r_Proj(new_asm, high_mode, pn+1);
2017                                 set_lowered(env, n, np_low, np_high);
2018                         } else {
2019                                 ir_node *np = new_r_Proj(new_asm, proj_mode, pn);
2020                                 exchange(n, np);
2021                         }
2022                 }
2023         }
2024 }
2025
2026 /**
2027  * Translate a Sel node.
2028  */
2029 static void lower_Sel(ir_node *sel, ir_mode *mode, lower_env_t *env)
2030 {
2031         (void) mode;
2032
2033         /* we must only lower value parameter Sels if we change the
2034            value parameter type. */
2035         if (env->value_param_tp != NULL) {
2036                 ir_entity *ent = get_Sel_entity(sel);
2037             if (get_entity_owner(ent) == env->value_param_tp) {
2038                         size_t pos = get_entity_arg_idx(ent);
2039
2040                         ent = get_method_value_param_ent(env->l_mtp, pos);
2041                         set_Sel_entity(sel, ent);
2042                 }
2043         }
2044 }
2045
2046 /**
2047  * check for opcodes that must always be lowered.
2048  */
2049 static bool always_lower(unsigned code)
2050 {
2051         switch (code) {
2052         case iro_ASM:
2053         case iro_Proj:
2054         case iro_Start:
2055         case iro_Call:
2056         case iro_Return:
2057         case iro_Cond:
2058         case iro_Conv:
2059         case iro_Sel:
2060                 return true;
2061         default:
2062                 return false;
2063         }
2064 }
2065
2066 /**
2067  * Compare two op_mode_entry_t's.
2068  */
2069 static int cmp_op_mode(const void *elt, const void *key, size_t size)
2070 {
2071         const op_mode_entry_t *e1 = (const op_mode_entry_t*)elt;
2072         const op_mode_entry_t *e2 = (const op_mode_entry_t*)key;
2073         (void) size;
2074
2075         return (e1->op != e2->op) | (e1->imode != e2->imode) | (e1->omode != e2->omode);
2076 }
2077
2078 /**
2079  * Compare two conv_tp_entry_t's.
2080  */
2081 static int cmp_conv_tp(const void *elt, const void *key, size_t size)
2082 {
2083         const conv_tp_entry_t *e1 = (const conv_tp_entry_t*)elt;
2084         const conv_tp_entry_t *e2 = (const conv_tp_entry_t*)key;
2085         (void) size;
2086
2087         return (e1->imode != e2->imode) | (e1->omode != e2->omode);
2088 }
2089
2090 /**
2091  * Enter a lowering function into an ir_op.
2092  */
2093 static void enter_lower_func(ir_op *op, lower_func func)
2094 {
2095         op->ops.generic = (op_func)func;
2096 }
2097
2098 /**
2099  * Returns non-zero if a method type must be lowered.
2100  *
2101  * @param mtp  the method type
2102  */
2103 static bool mtp_must_be_lowered(lower_env_t *env, ir_type *mtp)
2104 {
2105         size_t i, n_params = get_method_n_params(mtp);
2106
2107         /* first check if we have parameters that must be fixed */
2108         for (i = 0; i < n_params; ++i) {
2109                 ir_type *tp = get_method_param_type(mtp, i);
2110
2111                 if (is_Primitive_type(tp)) {
2112                         ir_mode *mode = get_type_mode(tp);
2113
2114                         if (mode == env->high_signed ||
2115                                 mode == env->high_unsigned)
2116                                 return true;
2117                 }
2118         }
2119         return false;
2120 }
2121
2122 /* Determine which modes need to be lowered */
2123 static void setup_modes(lower_env_t *env)
2124 {
2125         unsigned           size_bits           = env->params->doubleword_size;
2126         ir_mode           *doubleword_signed   = NULL;
2127         ir_mode           *doubleword_unsigned = NULL;
2128         size_t             n_modes             = get_irp_n_modes();
2129         ir_mode_arithmetic arithmetic;
2130         unsigned           modulo_shift;
2131         size_t             i;
2132
2133         /* search for doubleword modes... */
2134         for (i = 0; i < n_modes; ++i) {
2135                 ir_mode *mode = get_irp_mode(i);
2136                 if (!mode_is_int(mode))
2137                         continue;
2138                 if (get_mode_size_bits(mode) != size_bits)
2139                         continue;
2140                 if (mode_is_signed(mode)) {
2141                         if (doubleword_signed != NULL) {
2142                                 /* sigh - the lowerer should really just lower all mode with
2143                                  * size_bits it finds. Unfortunately this required a bigger
2144                                  * rewrite. */
2145                                 panic("multiple double word signed modes found");
2146                         }
2147                         doubleword_signed = mode;
2148                 } else {
2149                         if (doubleword_unsigned != NULL) {
2150                                 /* sigh - the lowerer should really just lower all mode with
2151                                  * size_bits it finds. Unfortunately this required a bigger
2152                                  * rewrite. */
2153                                 panic("multiple double word unsigned modes found");
2154                         }
2155                         doubleword_unsigned = mode;
2156                 }
2157         }
2158         if (doubleword_signed == NULL || doubleword_unsigned == NULL) {
2159                 panic("Couldn't find doubleword modes");
2160         }
2161
2162         arithmetic   = get_mode_arithmetic(doubleword_signed);
2163         modulo_shift = get_mode_modulo_shift(doubleword_signed);
2164
2165         assert(get_mode_size_bits(doubleword_unsigned) == size_bits);
2166         assert(size_bits % 2 == 0);
2167         assert(get_mode_sign(doubleword_signed) == 1);
2168         assert(get_mode_sign(doubleword_unsigned) == 0);
2169         assert(get_mode_sort(doubleword_signed) == irms_int_number);
2170         assert(get_mode_sort(doubleword_unsigned) == irms_int_number);
2171         assert(get_mode_arithmetic(doubleword_unsigned) == arithmetic);
2172         assert(get_mode_modulo_shift(doubleword_unsigned) == modulo_shift);
2173
2174         /* try to guess a sensible modulo shift for the new mode.
2175          * (This is IMO another indication that this should really be a node
2176          *  attribute instead of a mode thing) */
2177         if (modulo_shift == size_bits) {
2178                 modulo_shift = modulo_shift / 2;
2179         } else if (modulo_shift == 0) {
2180                 /* fine */
2181         } else {
2182                 panic("Don't know what new modulo shift to use for lowered doubleword mode");
2183         }
2184         size_bits /= 2;
2185
2186         /* produce lowered modes */
2187         env->high_signed   = doubleword_signed;
2188         env->high_unsigned = doubleword_unsigned;
2189         env->low_signed    = new_ir_mode("WS", irms_int_number, size_bits, 1,
2190                                          arithmetic, modulo_shift);
2191         env->low_unsigned  = new_ir_mode("WU", irms_int_number, size_bits, 0,
2192                                          arithmetic, modulo_shift);
2193 }
2194
2195 static void enqueue_preds(lower_env_t *env, ir_node *node)
2196 {
2197         int arity = get_irn_arity(node);
2198         int i;
2199
2200         for (i = 0; i < arity; ++i) {
2201                 ir_node *pred = get_irn_n(node, i);
2202                 pdeq_putr(env->waitq, pred);
2203         }
2204 }
2205
2206 static void lower_node(lower_env_t *env, ir_node *node)
2207 {
2208         int           arity;
2209         int           i;
2210         lower_func    func;
2211         ir_op        *op;
2212         ir_mode      *mode;
2213         unsigned      idx;
2214         node_entry_t *entry;
2215
2216         if (irn_visited_else_mark(node))
2217                 return;
2218
2219         /* cycles are always broken at Phi and Block nodes. So we don't need special
2220          * magic in all the other lower functions */
2221         if (is_Block(node)) {
2222                 enqueue_preds(env, node);
2223                 return;
2224         } else if (is_Phi(node)) {
2225                 lower_Phi(env, node);
2226                 return;
2227         }
2228
2229         /* depth-first: descend into operands */
2230         if (!is_Block(node)) {
2231                 ir_node *block = get_nodes_block(node);
2232                 lower_node(env, block);
2233         }
2234
2235         if (!is_Cond(node)) {
2236                 arity = get_irn_arity(node);
2237                 for (i = 0; i < arity; ++i) {
2238                         ir_node *pred = get_irn_n(node, i);
2239                         lower_node(env, pred);
2240                 }
2241         }
2242
2243         op   = get_irn_op(node);
2244         func = (lower_func) op->ops.generic;
2245         if (func == NULL)
2246                 return;
2247
2248         idx   = get_irn_idx(node);
2249         entry = idx < env->n_entries ? env->entries[idx] : NULL;
2250         if (entry != NULL || always_lower(get_irn_opcode(node))) {
2251                 mode = get_irn_op_mode(node);
2252                 if (mode == env->high_signed) {
2253                         mode = env->low_signed;
2254                 } else {
2255                         mode = env->low_unsigned;
2256                 }
2257                 DB((dbg, LEVEL_1, "  %+F\n", node));
2258                 func(node, mode, env);
2259         }
2260 }
2261
2262 static void lower_irg(lower_env_t *env, ir_graph *irg)
2263 {
2264         ir_entity *ent;
2265         ir_type   *mtp;
2266         unsigned   n_idx;
2267
2268         obstack_init(&env->obst);
2269
2270         n_idx = get_irg_last_idx(irg);
2271         n_idx = n_idx + (n_idx >> 2);  /* add 25% */
2272         env->n_entries = n_idx;
2273         env->entries   = NEW_ARR_F(node_entry_t*, n_idx);
2274         memset(env->entries, 0, sizeof(env->entries[0]) * n_idx);
2275
2276         env->irg            = irg;
2277         env->l_mtp          = NULL;
2278         env->flags          = 0;
2279         env->proj_2_block   = pmap_create();
2280         env->value_param_tp = NULL;
2281
2282         ent = get_irg_entity(irg);
2283         mtp = get_entity_type(ent);
2284
2285         if (mtp_must_be_lowered(env, mtp)) {
2286                 ir_type *ltp = lower_mtp(env, mtp);
2287                 /* Do not update the entity type yet, this will be done by lower_Start! */
2288                 env->flags |= MUST_BE_LOWERED;
2289                 env->l_mtp = ltp;
2290                 env->value_param_tp = get_method_value_param_type(mtp);
2291         }
2292
2293         /* first step: link all nodes and allocate data */
2294         ir_reserve_resources(irg, IR_RESOURCE_PHI_LIST | IR_RESOURCE_IRN_LINK);
2295         irg_walk_graph(irg, firm_clear_node_and_phi_links,
2296                        prepare_links_and_handle_rotl, env);
2297
2298         if (env->flags & MUST_BE_LOWERED) {
2299                 size_t i;
2300                 ir_reserve_resources(irg, IR_RESOURCE_IRN_VISITED);
2301                 inc_irg_visited(irg);
2302
2303                 assert(pdeq_empty(env->waitq));
2304                 pdeq_putr(env->waitq, get_irg_end(irg));
2305
2306                 env->lowered_phis = NEW_ARR_F(ir_node*, 0);
2307                 while (!pdeq_empty(env->waitq)) {
2308                         ir_node *node = (ir_node*)pdeq_getl(env->waitq);
2309                         lower_node(env, node);
2310                 }
2311
2312                 /* we need to fixup phis */
2313                 for (i = 0; i < ARR_LEN(env->lowered_phis); ++i) {
2314                         ir_node *phi = env->lowered_phis[i];
2315                         fixup_phi(env, phi);
2316                 }
2317                 DEL_ARR_F(env->lowered_phis);
2318
2319
2320                 ir_free_resources(irg, IR_RESOURCE_IRN_VISITED);
2321
2322                 if (env->flags & CF_CHANGED) {
2323                         /* control flow changed, dominance info is invalid */
2324                         set_irg_doms_inconsistent(irg);
2325                         set_irg_extblk_inconsistent(irg);
2326                         set_irg_loopinfo_inconsistent(irg);
2327                 }
2328         }
2329
2330         ir_free_resources(irg, IR_RESOURCE_PHI_LIST | IR_RESOURCE_IRN_LINK);
2331
2332         pmap_destroy(env->proj_2_block);
2333         DEL_ARR_F(env->entries);
2334         obstack_free(&env->obst, NULL);
2335 }
2336
2337 /*
2338  * Do the lowering.
2339  */
2340 void lower_dw_ops(const lwrdw_param_t *param)
2341 {
2342         lower_env_t lenv;
2343         size_t      i, n;
2344
2345         assert(param != NULL);
2346         FIRM_DBG_REGISTER(dbg, "firm.lower.dw");
2347
2348         memset(&lenv, 0, sizeof(lenv));
2349         lenv.params = param;
2350         setup_modes(&lenv);
2351
2352         /* create the necessary maps */
2353         if (! intrinsic_fkt)
2354                 intrinsic_fkt = new_set(cmp_op_mode, iro_Last + 1);
2355         if (! conv_types)
2356                 conv_types = new_set(cmp_conv_tp, 16);
2357         if (! lowered_type)
2358                 lowered_type = pmap_create();
2359
2360         /* create a primitive unsigned and signed type */
2361         if (! tp_u)
2362                 tp_u = get_type_for_mode(lenv.low_unsigned);
2363         if (! tp_s)
2364                 tp_s = get_type_for_mode(lenv.low_signed);
2365
2366         /* create method types for the created binop calls */
2367         if (! binop_tp_u) {
2368                 binop_tp_u = new_type_method(4, 2);
2369                 set_method_param_type(binop_tp_u, 0, tp_u);
2370                 set_method_param_type(binop_tp_u, 1, tp_u);
2371                 set_method_param_type(binop_tp_u, 2, tp_u);
2372                 set_method_param_type(binop_tp_u, 3, tp_u);
2373                 set_method_res_type(binop_tp_u, 0, tp_u);
2374                 set_method_res_type(binop_tp_u, 1, tp_u);
2375         }
2376         if (! binop_tp_s) {
2377                 binop_tp_s = new_type_method(4, 2);
2378                 set_method_param_type(binop_tp_s, 0, tp_u);
2379                 set_method_param_type(binop_tp_s, 1, tp_s);
2380                 set_method_param_type(binop_tp_s, 2, tp_u);
2381                 set_method_param_type(binop_tp_s, 3, tp_s);
2382                 set_method_res_type(binop_tp_s, 0, tp_u);
2383                 set_method_res_type(binop_tp_s, 1, tp_s);
2384         }
2385         if (! shiftop_tp_u) {
2386                 shiftop_tp_u = new_type_method(3, 2);
2387                 set_method_param_type(shiftop_tp_u, 0, tp_u);
2388                 set_method_param_type(shiftop_tp_u, 1, tp_u);
2389                 set_method_param_type(shiftop_tp_u, 2, tp_u);
2390                 set_method_res_type(shiftop_tp_u, 0, tp_u);
2391                 set_method_res_type(shiftop_tp_u, 1, tp_u);
2392         }
2393         if (! shiftop_tp_s) {
2394                 shiftop_tp_s = new_type_method(3, 2);
2395                 set_method_param_type(shiftop_tp_s, 0, tp_u);
2396                 set_method_param_type(shiftop_tp_s, 1, tp_s);
2397                 set_method_param_type(shiftop_tp_s, 2, tp_u);
2398                 set_method_res_type(shiftop_tp_s, 0, tp_u);
2399                 set_method_res_type(shiftop_tp_s, 1, tp_s);
2400         }
2401         if (! unop_tp_u) {
2402                 unop_tp_u = new_type_method(2, 2);
2403                 set_method_param_type(unop_tp_u, 0, tp_u);
2404                 set_method_param_type(unop_tp_u, 1, tp_u);
2405                 set_method_res_type(unop_tp_u, 0, tp_u);
2406                 set_method_res_type(unop_tp_u, 1, tp_u);
2407         }
2408         if (! unop_tp_s) {
2409                 unop_tp_s = new_type_method(2, 2);
2410                 set_method_param_type(unop_tp_s, 0, tp_u);
2411                 set_method_param_type(unop_tp_s, 1, tp_s);
2412                 set_method_res_type(unop_tp_s, 0, tp_u);
2413                 set_method_res_type(unop_tp_s, 1, tp_s);
2414         }
2415
2416         clear_irp_opcodes_generic_func();
2417         enter_lower_func(op_ASM,     lower_ASM);
2418         enter_lower_func(op_Add,     lower_binop);
2419         enter_lower_func(op_And,     lower_And);
2420         enter_lower_func(op_Call,    lower_Call);
2421         enter_lower_func(op_Cmp,     lower_Cmp);
2422         enter_lower_func(op_Cond,    lower_Cond);
2423         enter_lower_func(op_Const,   lower_Const);
2424         enter_lower_func(op_Conv,    lower_Conv);
2425         enter_lower_func(op_Div,     lower_Div);
2426         enter_lower_func(op_Eor,     lower_Eor);
2427         enter_lower_func(op_Load,    lower_Load);
2428         enter_lower_func(op_Minus,   lower_Unop);
2429         enter_lower_func(op_Mod,     lower_Mod);
2430         enter_lower_func(op_Mul,     lower_binop);
2431         enter_lower_func(op_Mux,     lower_Mux);
2432         enter_lower_func(op_Not,     lower_Not);
2433         enter_lower_func(op_Or,      lower_Or);
2434         enter_lower_func(op_Return,  lower_Return);
2435         enter_lower_func(op_Sel,     lower_Sel);
2436         enter_lower_func(op_Shl,     lower_Shl);
2437         enter_lower_func(op_Shr,     lower_Shr);
2438         enter_lower_func(op_Shrs,    lower_Shrs);
2439         enter_lower_func(op_Start,   lower_Start);
2440         enter_lower_func(op_Store,   lower_Store);
2441         enter_lower_func(op_Sub,     lower_binop);
2442         enter_lower_func(op_Unknown, lower_Unknown);
2443
2444         lenv.tv_mode_bytes = new_tarval_from_long(param->doubleword_size/(2*8), lenv.low_unsigned);
2445         lenv.tv_mode_bits  = new_tarval_from_long(param->doubleword_size/2, lenv.low_unsigned);
2446         lenv.waitq         = new_pdeq();
2447         lenv.first_id      = new_id_from_chars(param->little_endian ? ".l" : ".h", 2);
2448         lenv.next_id       = new_id_from_chars(param->little_endian ? ".h" : ".l", 2);
2449
2450         /* transform all graphs */
2451         for (i = 0, n = get_irp_n_irgs(); i < n; ++i) {
2452                 ir_graph *irg = get_irp_irg(i);
2453                 lower_irg(&lenv, irg);
2454         }
2455         del_pdeq(lenv.waitq);
2456 }
2457
2458 /* Default implementation. */
2459 ir_entity *def_create_intrinsic_fkt(ir_type *method, const ir_op *op,
2460                                     const ir_mode *imode, const ir_mode *omode,
2461                                     void *context)
2462 {
2463         char buf[64];
2464         ident *id;
2465         ir_entity *ent;
2466         (void) context;
2467
2468         if (imode == omode) {
2469                 snprintf(buf, sizeof(buf), "__l%s%s", get_op_name(op), get_mode_name(imode));
2470         } else {
2471                 snprintf(buf, sizeof(buf), "__l%s%s%s", get_op_name(op),
2472                         get_mode_name(imode), get_mode_name(omode));
2473         }
2474         id = new_id_from_str(buf);
2475
2476         ent = new_entity(get_glob_type(), id, method);
2477         set_entity_ld_ident(ent, get_entity_ident(ent));
2478         return ent;
2479 }