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 #include "lower_dw.h"
  58
  59 /** A map from (op, imode, omode) to Intrinsic functions entities. */
  60 static set *intrinsic_fkt;
  61
  62 /** A map from (imode, omode) to conv function types. */
  63 static set *conv_types;
  64
  65 /** A map from a method type to its lowered type. */
  66 static pmap *lowered_type;
  67
  68 /** The types for the binop and unop intrinsics. */
  69 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;
  70
  71 /** the debug handle */
  72 DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL;)
  73
  74 /**
  75  * An entry in the (op, imode, omode) -> entity map.
  76  */
  77 typedef struct op_mode_entry {
  78         const ir_op   *op;    /**< the op */
  79         const ir_mode *imode; /**< the input mode */
  80         const ir_mode *omode; /**< the output mode */
  81         ir_entity     *ent;   /**< the associated entity of this (op, imode, omode) triple */
  82 } op_mode_entry_t;
  83
  84 /**
  85  * An entry in the (imode, omode) -> tp map.
  86  */
  87 typedef struct conv_tp_entry {
  88         const ir_mode *imode; /**< the input mode */
  89         const ir_mode *omode; /**< the output mode */
  90         ir_type       *mtd;   /**< the associated method type of this (imode, omode) pair */
  91 } conv_tp_entry_t;
  92
  93 enum lower_flags {
  94         MUST_BE_LOWERED = 1,  /**< graph must be lowered */
  95         CF_CHANGED      = 2,  /**< control flow was changed */
  96 };
  97
  98 /**
  99  * The lower environment.
 100  */
 101 typedef struct lower_dw_env_t {
 102         lower64_entry_t **entries;     /**< entries per node */
 103         ir_graph      *irg;
 104         struct obstack obst;           /**< an obstack holding the temporary data */
 105         ir_type   *l_mtp;              /**< lowered method type of the current method */
 106         ir_tarval *tv_mode_bytes;      /**< a tarval containing the number of bytes in the lowered modes */
 107         ir_tarval *tv_mode_bits;       /**< a tarval containing the number of bits in the lowered modes */
 108         pdeq      *waitq;              /**< a wait queue of all nodes that must be handled later */
 109         ir_node  **lowered_phis;       /**< list of lowered phis */
 110         pmap      *proj_2_block;       /**< a map from ProjX to its destination blocks */
 111         ir_mode   *high_signed;        /**< doubleword signed type */
 112         ir_mode   *high_unsigned;      /**< doubleword unsigned type */
 113         ir_mode   *low_signed;         /**< word signed type */
 114         ir_mode   *low_unsigned;       /**< word unsigned type */
 115         ident     *first_id;           /**< .l for little and .h for big endian */
 116         ident     *next_id;            /**< .h for little and .l for big endian */
 117         const lwrdw_param_t *params;   /**< transformation parameter */
 118         unsigned flags;                /**< some flags */
 119         unsigned n_entries;            /**< number of entries */
 120         ir_type  *value_param_tp;      /**< the old value param type */
 121 } lower_dw_env_t;
 122
 123 static lower_dw_env_t *env;
 124
 125 static void lower_node(ir_node *node);
 126 static bool mtp_must_be_lowered(ir_type *mtp);
 127
 128 /**
 129  * Create a method type for a Conv emulation from imode to omode.
 130  */
 131 static ir_type *get_conv_type(ir_mode *imode, ir_mode *omode)
 132 {
 133         conv_tp_entry_t key, *entry;
 134         ir_type *mtd;
 135
 136         key.imode = imode;
 137         key.omode = omode;
 138         key.mtd   = NULL;
 139
 140         entry = (conv_tp_entry_t*)set_insert(conv_types, &key, sizeof(key), HASH_PTR(imode) ^ HASH_PTR(omode));
 141         if (! entry->mtd) {
 142                 int n_param = 1, n_res = 1;
 143
 144                 if (imode == env->high_signed || imode == env->high_unsigned)
 145                         n_param = 2;
 146                 if (omode == env->high_signed || omode == env->high_unsigned)
 147                         n_res = 2;
 148
 149                 /* create a new one */
 150                 mtd = new_type_method(n_param, n_res);
 151
 152                 /* set param types and result types */
 153                 n_param = 0;
 154                 if (imode == env->high_signed) {
 155                         set_method_param_type(mtd, n_param++, tp_u);
 156                         set_method_param_type(mtd, n_param++, tp_s);
 157                 } else if (imode == env->high_unsigned) {
 158                         set_method_param_type(mtd, n_param++, tp_u);
 159                         set_method_param_type(mtd, n_param++, tp_u);
 160                 } else {
 161                         ir_type *tp = get_type_for_mode(imode);
 162                         set_method_param_type(mtd, n_param++, tp);
 163                 }
 164
 165                 n_res = 0;
 166                 if (omode == env->high_signed) {
 167                         set_method_res_type(mtd, n_res++, tp_u);
 168                         set_method_res_type(mtd, n_res++, tp_s);
 169                 } else if (omode == env->high_unsigned) {
 170                         set_method_res_type(mtd, n_res++, tp_u);
 171                         set_method_res_type(mtd, n_res++, tp_u);
 172                 } else {
 173                         ir_type *tp = get_type_for_mode(omode);
 174                         set_method_res_type(mtd, n_res++, tp);
 175                 }
 176                 entry->mtd = mtd;
 177         } else {
 178                 mtd = entry->mtd;
 179         }
 180         return mtd;
 181 }
 182
 183 /**
 184  * Add an additional control flow input to a block.
 185  * Patch all Phi nodes. The new Phi inputs are copied from
 186  * old input number nr.
 187  */
 188 static void add_block_cf_input_nr(ir_node *block, int nr, ir_node *cf)
 189 {
 190         int i, arity = get_irn_arity(block);
 191         ir_node **in, *phi;
 192
 193         assert(nr < arity);
 194
 195         NEW_ARR_A(ir_node *, in, arity + 1);
 196         for (i = 0; i < arity; ++i)
 197                 in[i] = get_irn_n(block, i);
 198         in[i] = cf;
 199
 200         set_irn_in(block, i + 1, in);
 201
 202         for (phi = get_Block_phis(block); phi != NULL; phi = get_Phi_next(phi)) {
 203                 for (i = 0; i < arity; ++i)
 204                         in[i] = get_irn_n(phi, i);
 205                 in[i] = in[nr];
 206                 set_irn_in(phi, i + 1, in);
 207         }
 208 }
 209
 210 /**
 211  * Add an additional control flow input to a block.
 212  * Patch all Phi nodes. The new Phi inputs are copied from
 213  * old input from cf tmpl.
 214  */
 215 static void add_block_cf_input(ir_node *block, ir_node *tmpl, ir_node *cf)
 216 {
 217         int i, arity = get_irn_arity(block);
 218         int nr = 0;
 219
 220         for (i = 0; i < arity; ++i) {
 221                 if (get_irn_n(block, i) == tmpl) {
 222                         nr = i;
 223                         break;
 224                 }
 225         }
 226         assert(i < arity);
 227         add_block_cf_input_nr(block, nr, cf);
 228 }
 229
 230 /**
 231  * Return the "operational" mode of a Firm node.
 232  */
 233 static ir_mode *get_irn_op_mode(ir_node *node)
 234 {
 235         switch (get_irn_opcode(node)) {
 236         case iro_Load:
 237                 return get_Load_mode(node);
 238         case iro_Store:
 239                 return get_irn_mode(get_Store_value(node));
 240         case iro_Div:
 241                 return get_irn_mode(get_Div_left(node));
 242         case iro_Mod:
 243                 return get_irn_mode(get_Mod_left(node));
 244         case iro_Cmp:
 245                 return get_irn_mode(get_Cmp_left(node));
 246         default:
 247                 return get_irn_mode(node);
 248         }
 249 }
 250
 251 /**
 252  * Walker, prepare the node links and determine which nodes need to be lowered
 253  * at all.
 254  */
 255 static void prepare_links(ir_node *node)
 256 {
 257         ir_mode         *mode = get_irn_op_mode(node);
 258         lower64_entry_t *link;
 259         int              i;
 260
 261         if (mode == env->high_signed || mode == env->high_unsigned) {
 262                 unsigned idx = get_irn_idx(node);
 263                 /* ok, found a node that will be lowered */
 264                 link = OALLOCZ(&env->obst, lower64_entry_t);
 265
 266                 if (idx >= env->n_entries) {
 267                         /* enlarge: this happens only for Rotl nodes which is RARELY */
 268                         unsigned old   = env->n_entries;
 269                         unsigned n_idx = idx + (idx >> 3);
 270
 271                         ARR_RESIZE(lower64_entry_t *, env->entries, n_idx);
 272                         memset(&env->entries[old], 0, (n_idx - old) * sizeof(env->entries[0]));
 273                         env->n_entries = n_idx;
 274                 }
 275                 env->entries[idx] = link;
 276                 env->flags |= MUST_BE_LOWERED;
 277         } else if (is_Conv(node)) {
 278                 /* Conv nodes have two modes */
 279                 ir_node *pred = get_Conv_op(node);
 280                 mode = get_irn_mode(pred);
 281
 282                 if (mode == env->high_signed || mode == env->high_unsigned) {
 283                         /* must lower this node either but don't need a link */
 284                         env->flags |= MUST_BE_LOWERED;
 285                 }
 286                 return;
 287         }
 288
 289         if (is_Proj(node)) {
 290                 /* link all Proj nodes to its predecessor:
 291                    Note that Tuple Proj's and its Projs are linked either. */
 292                 ir_node *pred = get_Proj_pred(node);
 293
 294                 set_irn_link(node, get_irn_link(pred));
 295                 set_irn_link(pred, node);
 296         } else if (is_Phi(node)) {
 297                 /* link all Phi nodes to its block */
 298                 ir_node *block = get_nodes_block(node);
 299                 add_Block_phi(block, node);
 300         } else if (is_Block(node)) {
 301                 /* fill the Proj -> Block map */
 302                 for (i = get_Block_n_cfgpreds(node) - 1; i >= 0; --i) {
 303                         ir_node *pred = get_Block_cfgpred(node, i);
 304
 305                         if (is_Proj(pred))
 306                                 pmap_insert(env->proj_2_block, pred, node);
 307                 }
 308         }
 309 }
 310
 311 lower64_entry_t *get_node_entry(ir_node *node)
 312 {
 313         unsigned idx = get_irn_idx(node);
 314         assert(idx < env->n_entries);
 315         return env->entries[idx];
 316 }
 317
 318 void ir_set_dw_lowered(ir_node *old, ir_node *new_low, ir_node *new_high)
 319 {
 320         lower64_entry_t *entry = get_node_entry(old);
 321         entry->low_word  = new_low;
 322         entry->high_word = new_high;
 323 }
 324
 325 /**
 326  * Translate a Constant: create two.
 327  */
 328 static void lower_Const(ir_node *node, ir_mode *mode)
 329 {
 330         ir_graph  *irg      = get_irn_irg(node);
 331         dbg_info  *dbg      = get_irn_dbg_info(node);
 332         ir_mode   *low_mode = env->low_unsigned;
 333         ir_tarval *tv       = get_Const_tarval(node);
 334         ir_tarval *tv_l     = tarval_convert_to(tv, low_mode);
 335         ir_node   *res_low  = new_rd_Const(dbg, irg, tv_l);
 336         ir_tarval *tv_shrs  = tarval_shrs(tv, env->tv_mode_bits);
 337         ir_tarval *tv_h     = tarval_convert_to(tv_shrs, mode);
 338         ir_node   *res_high = new_rd_Const(dbg, irg, tv_h);
 339
 340         ir_set_dw_lowered(node, res_low, res_high);
 341 }
 342
 343 /**
 344  * Translate a Load: create two.
 345  */
 346 static void lower_Load(ir_node *node, ir_mode *mode)
 347 {
 348         ir_mode    *low_mode = env->low_unsigned;
 349         ir_graph   *irg = get_irn_irg(node);
 350         ir_node    *adr = get_Load_ptr(node);
 351         ir_node    *mem = get_Load_mem(node);
 352         ir_node    *low, *high, *proj;
 353         dbg_info   *dbg;
 354         ir_node    *block = get_nodes_block(node);
 355         ir_cons_flags volatility = get_Load_volatility(node) == volatility_is_volatile
 356                                  ? cons_volatile : cons_none;
 357
 358         if (env->params->little_endian) {
 359                 low  = adr;
 360                 high = new_r_Add(block, adr, new_r_Const(irg, env->tv_mode_bytes), get_irn_mode(adr));
 361         } else {
 362                 low  = new_r_Add(block, adr, new_r_Const(irg, env->tv_mode_bytes), get_irn_mode(adr));
 363                 high = adr;
 364         }
 365
 366         /* create two loads */
 367         dbg  = get_irn_dbg_info(node);
 368         low  = new_rd_Load(dbg, block, mem,  low,  low_mode, volatility);
 369         proj = new_r_Proj(low, mode_M, pn_Load_M);
 370         high = new_rd_Load(dbg, block, proj, high, mode, volatility);
 371
 372         ir_set_dw_lowered(node, low, high);
 373
 374         for (proj = (ir_node*)get_irn_link(node); proj;
 375              proj = (ir_node*)get_irn_link(proj)) {
 376                 switch (get_Proj_proj(proj)) {
 377                 case pn_Load_M:         /* Memory result. */
 378                         /* put it to the second one */
 379                         set_Proj_pred(proj, high);
 380                         break;
 381                 case pn_Load_X_except:  /* Execution result if exception occurred. */
 382                         /* put it to the first one */
 383                         set_Proj_pred(proj, low);
 384                         break;
 385                 case pn_Load_res: {       /* Result of load operation. */
 386                         ir_node *res_low  = new_r_Proj(low,  low_mode, pn_Load_res);
 387                         ir_node *res_high = new_r_Proj(high, mode,     pn_Load_res);
 388                         ir_set_dw_lowered(proj, res_low, res_high);
 389                         break;
 390                 }
 391                 default:
 392                         assert(0 && "unexpected Proj number");
 393                 }
 394                 /* mark this proj: we have handled it already, otherwise we might fall
 395                  * into out new nodes. */
 396                 mark_irn_visited(proj);
 397         }
 398 }
 399
 400 /**
 401  * Translate a Store: create two.
 402  */
 403 static void lower_Store(ir_node *node, ir_mode *mode)
 404 {
 405         ir_graph              *irg;
 406         ir_node               *block, *adr, *mem;
 407         ir_node               *low, *high, *proj;
 408         dbg_info              *dbg;
 409         ir_node               *value = get_Store_value(node);
 410         const lower64_entry_t *entry = get_node_entry(value);
 411         ir_cons_flags volatility = get_Store_volatility(node) == volatility_is_volatile
 412                                    ? cons_volatile : cons_none;
 413         (void) mode;
 414
 415         assert(entry);
 416
 417         if (! entry->low_word) {
 418                 /* not ready yet, wait */
 419                 pdeq_putr(env->waitq, node);
 420                 return;
 421         }
 422
 423         irg = get_irn_irg(node);
 424         adr = get_Store_ptr(node);
 425         mem = get_Store_mem(node);
 426         block = get_nodes_block(node);
 427
 428         if (env->params->little_endian) {
 429                 low  = adr;
 430                 high = new_r_Add(block, adr, new_r_Const(irg, env->tv_mode_bytes), get_irn_mode(adr));
 431         } else {
 432                 low  = new_r_Add(block, adr, new_r_Const(irg, env->tv_mode_bytes), get_irn_mode(adr));
 433                 high = adr;
 434         }
 435
 436         /* create two Stores */
 437         dbg = get_irn_dbg_info(node);
 438         low  = new_rd_Store(dbg, block, mem, low,  entry->low_word, volatility);
 439         proj = new_r_Proj(low, mode_M, pn_Store_M);
 440         high = new_rd_Store(dbg, block, proj, high, entry->high_word, volatility);
 441
 442         ir_set_dw_lowered(node, low, high);
 443
 444         for (proj = (ir_node*)get_irn_link(node); proj;
 445              proj = (ir_node*)get_irn_link(proj)) {
 446                 switch (get_Proj_proj(proj)) {
 447                 case pn_Store_M:         /* Memory result. */
 448                         /* put it to the second one */
 449                         set_Proj_pred(proj, high);
 450                         break;
 451                 case pn_Store_X_except:  /* Execution result if exception occurred. */
 452                         /* put it to the first one */
 453                         set_Proj_pred(proj, low);
 454                         break;
 455                 default:
 456                         assert(0 && "unexpected Proj number");
 457                 }
 458                 /* mark this proj: we have handled it already, otherwise we might fall into
 459                  * out new nodes. */
 460                 mark_irn_visited(proj);
 461         }
 462 }
 463
 464 /**
 465  * Return a node containing the address of the intrinsic emulation function.
 466  *
 467  * @param method  the method type of the emulation function
 468  * @param op      the emulated ir_op
 469  * @param imode   the input mode of the emulated opcode
 470  * @param omode   the output mode of the emulated opcode
 471  * @param env     the lower environment
 472  */
 473 static ir_node *get_intrinsic_address(ir_type *method, ir_op *op,
 474                                       ir_mode *imode, ir_mode *omode)
 475 {
 476         symconst_symbol sym;
 477         ir_entity *ent;
 478         op_mode_entry_t key, *entry;
 479
 480         key.op    = op;
 481         key.imode = imode;
 482         key.omode = omode;
 483         key.ent   = NULL;
 484
 485         entry = (op_mode_entry_t*)set_insert(intrinsic_fkt, &key, sizeof(key),
 486                                 HASH_PTR(op) ^ HASH_PTR(imode) ^ (HASH_PTR(omode) << 8));
 487         if (! entry->ent) {
 488                 /* create a new one */
 489                 ent = env->params->create_intrinsic(method, op, imode, omode, env->params->ctx);
 490
 491                 assert(ent && "Intrinsic creator must return an entity");
 492                 entry->ent = ent;
 493         } else {
 494                 ent = entry->ent;
 495         }
 496         sym.entity_p = ent;
 497         return new_r_SymConst(env->irg, mode_P_code, sym, symconst_addr_ent);
 498 }
 499
 500 /**
 501  * Translate a Div.
 502  *
 503  * Create an intrinsic Call.
 504  */
 505 static void lower_Div(ir_node *node, ir_mode *mode)
 506 {
 507         ir_node         *left   = get_Div_left(node);
 508         ir_node         *right  = get_Div_right(node);
 509         ir_node         *block  = get_nodes_block(node);
 510         dbg_info        *dbgi   = get_irn_dbg_info(node);
 511         ir_type         *mtp    = mode_is_signed(mode) ? binop_tp_s : binop_tp_u;
 512         ir_mode         *opmode = get_irn_op_mode(node);
 513         ir_node         *addr
 514             = get_intrinsic_address(mtp, get_irn_op(node), opmode, opmode);
 515         ir_node         *in[4];
 516         ir_node         *call;
 517         ir_node         *resproj;
 518         const ir_edge_t *edge;
 519         const ir_edge_t *next;
 520
 521         if (env->params->little_endian) {
 522                 in[0] = get_lowered_low(left);
 523                 in[1] = get_lowered_high(left);
 524                 in[2] = get_lowered_low(right);
 525                 in[3] = get_lowered_high(right);
 526         } else {
 527                 in[0] = get_lowered_high(left);
 528                 in[1] = get_lowered_low(left);
 529                 in[2] = get_lowered_high(right);
 530                 in[3] = get_lowered_low(right);
 531         }
 532         call    = new_rd_Call(dbgi, block, get_Div_mem(node), addr, 4, in, mtp);
 533         resproj = new_r_Proj(call, mode_T, pn_Call_T_result);
 534         set_irn_pinned(call, get_irn_pinned(node));
 535
 536         for (proj = (ir_node*)get_irn_link(node); proj;
 537              proj = (ir_node*)get_irn_link(proj)) {
 538                 switch (get_Proj_proj(proj)) {
 539                 case pn_Div_M:         /* Memory result. */
 540                         /* reroute to the call */
 541                         set_Proj_pred(proj, call);
 542                         set_Proj_proj(proj, pn_Call_M);
 543                         break;
 544                 case pn_Div_X_except:  /* Execution result if exception occurred. */
 545                         /* reroute to the call */
 546                         set_Proj_pred(proj, call);
 547                         set_Proj_proj(proj, pn_Call_X_except);
 548                         break;
 549                 case pn_Div_res:
 550                         if (env->params->little_endian) {
 551                                 ir_node *res_low  = new_r_Proj(resproj, env->low_unsigned, 0);
 552                                 ir_node *res_high = new_r_Proj(resproj, mode,              1);
 553                                 ir_set_dw_lowered(proj, res_low, res_high);
 554                         } else {
 555                                 ir_node *res_low  = new_r_Proj(resproj, env->low_unsigned, 1);
 556                                 ir_node *res_high = new_r_Proj(resproj, mode,              0);
 557                                 ir_set_dw_lowered(proj, res_low, res_high);
 558                         }
 559                         break;
 560                 default:
 561                         assert(0 && "unexpected Proj number");
 562                 }
 563                 /* mark this proj: we have handled it already, otherwise we might fall into
 564                  * out new nodes. */
 565                 mark_irn_visited(proj);
 566         }
 567 }
 568
 569 /**
 570  * Translate a Mod.
 571  *
 572  * Create an intrinsic Call.
 573  */
 574 static void lower_Mod(ir_node *node, ir_mode *mode)
 575 {
 576         ir_node         *left   = get_Mod_left(node);
 577         ir_node         *right  = get_Mod_right(node);
 578         dbg_info        *dbgi   = get_irn_dbg_info(node);
 579         ir_node         *block  = get_nodes_block(node);
 580         ir_type         *mtp    = mode_is_signed(mode) ? binop_tp_s : binop_tp_u;
 581         ir_mode         *opmode = get_irn_op_mode(node);
 582         ir_node         *addr
 583             = get_intrinsic_address(mtp, get_irn_op(node), opmode, opmode);
 584         ir_node         *in[4];
 585         ir_node         *call;
 586         ir_node         *resproj;
 587         const ir_edge_t *edge;
 588         const ir_edge_t *next;
 589
 590         if (env->params->little_endian) {
 591                 in[0] = get_lowered_low(left);
 592                 in[1] = get_lowered_high(left);
 593                 in[2] = get_lowered_low(right);
 594                 in[3] = get_lowered_high(right);
 595         } else {
 596                 in[0] = get_lowered_high(left);
 597                 in[1] = get_lowered_low(left);
 598                 in[2] = get_lowered_high(right);
 599                 in[3] = get_lowered_low(right);
 600         }
 601         call    = new_rd_Call(dbgi, block, get_Mod_mem(node), addr, 4, in, mtp);
 602         resproj = new_r_Proj(call, mode_T, pn_Call_T_result);
 603         set_irn_pinned(call, get_irn_pinned(node));
 604
 605         for (proj = (ir_node*)get_irn_link(node); proj;
 606              proj = (ir_node*)get_irn_link(proj)) {
 607                 switch (get_Proj_proj(proj)) {
 608                 case pn_Mod_M:         /* Memory result. */
 609                         /* reroute to the call */
 610                         set_Proj_pred(proj, call);
 611                         set_Proj_proj(proj, pn_Call_M);
 612                         break;
 613                 case pn_Mod_X_except:  /* Execution result if exception occurred. */
 614                         /* reroute to the call */
 615                         set_Proj_pred(proj, call);
 616                         set_Proj_proj(proj, pn_Call_X_except);
 617                         break;
 618                 case pn_Mod_res:
 619                         if (env->params->little_endian) {
 620                                 ir_node *res_low  = new_r_Proj(resproj, env->low_unsigned, 0);
 621                                 ir_node *res_high = new_r_Proj(resproj, mode,              1);
 622                                 ir_set_dw_lowered(proj, res_low, res_high);
 623                         } else {
 624                                 ir_node *res_low  = new_r_Proj(resproj, env->low_unsigned, 1);
 625                                 ir_node *res_high = new_r_Proj(resproj, mode,              0);
 626                                 ir_set_dw_lowered(proj, res_low, res_high);
 627                         }
 628                         break;
 629                 default:
 630                         assert(0 && "unexpected Proj number");
 631                 }
 632                 /* mark this proj: we have handled it already, otherwise we might fall
 633                  * into out new nodes. */
 634                 mark_irn_visited(proj);
 635         }
 636 }
 637
 638 /**
 639  * Translate a binop.
 640  *
 641  * Create an intrinsic Call.
 642  */
 643 static void lower_binop(ir_node *node, ir_mode *mode)
 644 {
 645         ir_node  *left  = get_binop_left(node);
 646         ir_node  *right = get_binop_right(node);
 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   = mode_is_signed(mode) ? binop_tp_s : binop_tp_u;
 651         ir_node  *addr  = get_intrinsic_address(mtp, get_irn_op(node), mode, mode);
 652         ir_node  *in[4];
 653         ir_node  *call;
 654         ir_node  *resproj;
 655
 656         if (env->params->little_endian) {
 657                 in[0] = get_lowered_low(left);
 658                 in[1] = get_lowered_high(left);
 659                 in[2] = get_lowered_low(right);
 660                 in[3] = get_lowered_high(right);
 661         } else {
 662                 in[0] = get_lowered_high(left);
 663                 in[1] = get_lowered_low(left);
 664                 in[2] = get_lowered_high(right);
 665                 in[3] = get_lowered_low(right);
 666         }
 667         call    = new_rd_Call(dbgi, block, get_irg_no_mem(irg), addr, 4, in, mtp);
 668         resproj = new_r_Proj(call, mode_T, pn_Call_T_result);
 669         set_irn_pinned(call, get_irn_pinned(node));
 670
 671         if (env->params->little_endian) {
 672                 ir_node *res_low  = new_r_Proj(resproj, env->low_unsigned, 0);
 673                 ir_node *res_high = new_r_Proj(resproj, mode,              1);
 674                 ir_set_dw_lowered(node, res_low, res_high);
 675         } else {
 676                 ir_node *res_low  = new_r_Proj(resproj, env->low_unsigned, 1);
 677                 ir_node *res_high = new_r_Proj(resproj, mode,              0);
 678                 ir_set_dw_lowered(node, res_low, res_high);
 679         }
 680 }
 681
 682 /**
 683  * Translate a Shiftop.
 684  *
 685  * Create an intrinsic Call.
 686  */
 687 static void lower_Shiftop(ir_node *node, ir_mode *mode)
 688 {
 689         ir_node               *block      = get_nodes_block(node);
 690         ir_node               *left       = get_binop_left(node);
 691         const lower64_entry_t *left_entry = get_node_entry(left);
 692         ir_node               *right      = get_binop_right(node);
 693         ir_node               *in[3]      = {
 694                 left_entry->low_word, left_entry->high_word,
 695                 /* it should be safe to conv to low_unsigned */
 696                 new_r_Conv(block, right, env->low_unsigned)
 697         };
 698         dbg_info           *dbgi       = get_irn_dbg_info(node);
 699         ir_graph           *irg        = get_irn_irg(block);
 700         ir_type            *mtp
 701                 = mode_is_signed(mode) ? shiftop_tp_s : shiftop_tp_u;
 702         ir_node            *addr
 703                 = get_intrinsic_address(mtp, get_irn_op(node), mode, mode);
 704         ir_node            *call
 705                 = new_rd_Call(dbgi, block, get_irg_no_mem(irg), addr, 3, in, mtp);
 706         ir_node            *resproj  = new_r_Proj(call, mode_T, pn_Call_T_result);
 707         ir_node            *res_low  = new_r_Proj(resproj, env->low_unsigned, 0);
 708         ir_node            *res_high = new_r_Proj(resproj, mode,              1);
 709
 710         set_irn_pinned(call, get_irn_pinned(node));
 711         ir_set_dw_lowered(node, res_low, res_high);
 712 }
 713
 714 /**
 715  * Translate a Shr and handle special cases.
 716  */
 717 static void lower_Shr(ir_node *node, ir_mode *mode)
 718 {
 719         ir_graph *irg   = get_irn_irg(node);
 720         ir_node  *right = get_Shr_right(node);
 721
 722         if (get_mode_arithmetic(mode) == irma_twos_complement && is_Const(right)) {
 723                 ir_tarval *tv = get_Const_tarval(right);
 724
 725                 if (tarval_is_long(tv) &&
 726                     get_tarval_long(tv) >= (long)get_mode_size_bits(mode)) {
 727                         ir_node *block        = get_nodes_block(node);
 728                         ir_node *left         = get_Shr_left(node);
 729                         ir_mode *low_unsigned = env->low_unsigned;
 730                         long shf_cnt = get_tarval_long(tv) - get_mode_size_bits(mode);
 731                         const lower64_entry_t *left_entry = get_node_entry(left);
 732                         ir_node *res_low;
 733                         ir_node *res_high;
 734
 735                         left = left_entry->high_word;
 736
 737                         /* convert high word into low_unsigned mode if necessary */
 738                         if (get_irn_mode(left) != low_unsigned)
 739                                 left = new_r_Conv(block, left, low_unsigned);
 740
 741                         if (shf_cnt > 0) {
 742                                 ir_node *c = new_r_Const_long(irg, low_unsigned, shf_cnt);
 743                                 res_low = new_r_Shr(block, left, c, low_unsigned);
 744                         } else {
 745                                 res_low = left;
 746                         }
 747                         res_high = new_r_Const(irg, get_mode_null(mode));
 748                         ir_set_dw_lowered(node, res_low, res_high);
 749
 750                         return;
 751                 }
 752         }
 753         lower_Shiftop(node, mode);
 754 }
 755
 756 /**
 757  * Translate a Shl and handle special cases.
 758  */
 759 static void lower_Shl(ir_node *node, ir_mode *mode)
 760 {
 761         ir_graph *irg   = get_irn_irg(node);
 762         ir_node  *right = get_Shl_right(node);
 763
 764         if (get_mode_arithmetic(mode) == irma_twos_complement && is_Const(right)) {
 765                 ir_tarval *tv = get_Const_tarval(right);
 766
 767                 if (tarval_is_long(tv)) {
 768                         long value = get_tarval_long(tv);
 769                     if (value >= (long)get_mode_size_bits(mode)) {
 770                                 /* simple case: shift above the lower word */
 771                                 ir_mode *mode_l;
 772                                 ir_node *block = get_nodes_block(node);
 773                                 ir_node *left = get_Shl_left(node);
 774                                 ir_node *c;
 775                                 long shf_cnt = get_tarval_long(tv) - get_mode_size_bits(mode);
 776                                 const lower64_entry_t *left_entry = get_node_entry(left);
 777                                 ir_node  *res_low;
 778                                 ir_node  *res_high;
 779
 780                                 left = left_entry->low_word;
 781                                 left = new_r_Conv(block, left, mode);
 782
 783                                 mode_l = env->low_unsigned;
 784                                 if (shf_cnt > 0) {
 785                                         c        = new_r_Const_long(irg, mode_l, shf_cnt);
 786                                         res_high = new_r_Shl(block, left, c, mode);
 787                                 } else {
 788                                         res_high = left;
 789                                 }
 790                                 res_low = new_r_Const(irg, get_mode_null(mode_l));
 791                                 ir_set_dw_lowered(node, res_low, res_high);
 792
 793                                 return;
 794                         }
 795                         if (value == 1) {
 796                                 /* left << 1 == left + left */
 797                                 ir_node               *left        = get_binop_left(node);
 798                                 const lower64_entry_t *left_entry  = get_node_entry(left);
 799                                 ir_node               *in[4]       = {
 800                                         left_entry->low_word, left_entry->high_word,
 801                                         left_entry->low_word, left_entry->high_word,
 802                                 };
 803                                 dbg_info           *dbgi        = get_irn_dbg_info(node);
 804                                 ir_node            *block       = get_nodes_block(node);
 805                                 ir_graph           *irg         = get_irn_irg(block);
 806                                 ir_type            *mtp
 807                                         = mode_is_signed(mode) ? binop_tp_s : binop_tp_u;
 808                                 ir_node            *addr
 809                                         = get_intrinsic_address(mtp, op_Add, mode, mode);
 810                                 ir_node            *call
 811                                         = new_rd_Call(dbgi, block, get_irg_no_mem(irg), addr, 4, in, mtp);
 812                                 ir_node            *resproj  = new_r_Proj(call, mode_T, pn_Call_T_result);
 813                                 ir_node            *res_low  = new_r_Proj(resproj, env->low_unsigned, 0);
 814                                 ir_node            *res_high = new_r_Proj(resproj, mode,              1);
 815                                 set_irn_pinned(call, get_irn_pinned(node));
 816                                 ir_set_dw_lowered(node, res_low, res_high);
 817
 818                                 return;
 819                         }
 820                 }
 821         }
 822         lower_Shiftop(node, mode);
 823 }
 824
 825 /**
 826  * Translate a Shrs and handle special cases.
 827  */
 828 static void lower_Shrs(ir_node *node, ir_mode *mode)
 829 {
 830         ir_graph *irg   = get_irn_irg(node);
 831         ir_node  *right = get_Shrs_right(node);
 832
 833         if (get_mode_arithmetic(mode) == irma_twos_complement && is_Const(right)) {
 834                 ir_tarval *tv = get_Const_tarval(right);
 835
 836                 if (tarval_is_long(tv) &&
 837                     get_tarval_long(tv) >= (long)get_mode_size_bits(mode)) {
 838                         ir_node *block         = get_nodes_block(node);
 839                         ir_node *left          = get_Shrs_left(node);
 840                         ir_mode *low_unsigned  = env->low_unsigned;
 841                         long     shf_cnt       = get_tarval_long(tv) - get_mode_size_bits(mode);
 842                         const lower64_entry_t *left_entry = get_node_entry(left);
 843                         ir_node *left_unsigned = left;
 844                         ir_node *res_low;
 845                         ir_node *res_high;
 846                         ir_node *c;
 847
 848                         left = left_entry->high_word;
 849
 850                         /* convert high word into low_unsigned mode if necessary */
 851                         if (get_irn_mode(left_unsigned) != low_unsigned)
 852                                 left_unsigned = new_r_Conv(block, left, low_unsigned);
 853
 854                         if (shf_cnt > 0) {
 855                                 c       = new_r_Const_long(irg, low_unsigned, shf_cnt);
 856                                 res_low = new_r_Shrs(block, left_unsigned, c, low_unsigned);
 857                         } else {
 858                                 res_low = left_unsigned;
 859                         }
 860
 861                         c        = new_r_Const(irg, get_mode_all_one(low_unsigned));
 862                         res_high = new_r_Shrs(block, left, c, mode);
 863                         ir_set_dw_lowered(node, res_low, res_high);
 864                         return;
 865                 }
 866         }
 867         lower_Shiftop(node, mode);
 868 }
 869
 870 /**
 871  * Rebuild Rotl nodes into Or(Shl, Shr) and prepare all nodes.
 872  */
 873 static void prepare_links_and_handle_rotl(ir_node *node, void *data)
 874 {
 875         (void) data;
 876         if (is_Rotl(node)) {
 877                 ir_mode  *mode = get_irn_op_mode(node);
 878                 ir_node  *right;
 879                 ir_node  *left, *shl, *shr, *ornode, *block, *sub, *c;
 880                 ir_mode  *omode, *rmode;
 881                 ir_graph *irg;
 882                 dbg_info *dbg;
 883                 optimization_state_t state;
 884
 885                 if (mode != env->high_signed && mode != env->high_unsigned) {
 886                         prepare_links(node);
 887                         return;
 888                 }
 889
 890                 /* replace the Rotl(x,y) by an Or(Shl(x,y), Shr(x,64-y)) */
 891                 right = get_Rotl_right(node);
 892                 irg   = get_irn_irg(node);
 893                 dbg   = get_irn_dbg_info(node);
 894                 omode = get_irn_mode(node);
 895                 left  = get_Rotl_left(node);
 896                 block = get_nodes_block(node);
 897                 shl   = new_rd_Shl(dbg, block, left, right, omode);
 898                 rmode = get_irn_mode(right);
 899                 c     = new_r_Const_long(irg, rmode, get_mode_size_bits(omode));
 900                 sub   = new_rd_Sub(dbg, block, c, right, rmode);
 901                 shr   = new_rd_Shr(dbg, block, left, sub, omode);
 902
 903                 /* switch optimization off here, or we will get the Rotl back */
 904                 save_optimization_state(&state);
 905                 set_opt_algebraic_simplification(0);
 906                 ornode = new_rd_Or(dbg, block, shl, shr, omode);
 907                 restore_optimization_state(&state);
 908
 909                 exchange(node, ornode);
 910
 911                 /* do lowering on the new nodes */
 912                 prepare_links(shl);
 913                 prepare_links(c);
 914                 prepare_links(sub);
 915                 prepare_links(shr);
 916                 prepare_links(ornode);
 917                 return;
 918         }
 919
 920         prepare_links(node);
 921 }
 922
 923 /**
 924  * Translate an Unop.
 925  *
 926  * Create an intrinsic Call.
 927  */
 928 static void lower_unop(ir_node *node, ir_mode *mode)
 929 {
 930         ir_node  *op       = get_unop_op(node);
 931         dbg_info *dbgi     = get_irn_dbg_info(node);
 932         ir_node  *block    = get_nodes_block(node);
 933         ir_graph *irg      = get_irn_irg(block);
 934         ir_type  *mtp      = mode_is_signed(mode) ? unop_tp_s : unop_tp_u;
 935         ir_op    *irop     = get_irn_op(node);
 936         ir_node  *addr     = get_intrinsic_address(mtp, irop, mode, mode);
 937         ir_node  *nomem    = get_irg_no_mem(irg);
 938         ir_node  *in[2];
 939         ir_node  *call;
 940         ir_node  *resproj;
 941
 942         if (env->params->little_endian) {
 943                 in[0] = get_lowered_low(op);
 944                 in[1] = get_lowered_high(op);
 945         } else {
 946                 in[0] = get_lowered_high(op);
 947                 in[1] = get_lowered_low(op);
 948         }
 949         call    = new_rd_Call(dbgi, block, nomem, addr, 2, in, mtp);
 950         resproj = new_r_Proj(call, mode_T, pn_Call_T_result);
 951         set_irn_pinned(call, get_irn_pinned(node));
 952
 953         if (env->params->little_endian) {
 954                 ir_node *res_low  = new_r_Proj(resproj, env->low_unsigned, 0);
 955                 ir_node *res_high = new_r_Proj(resproj, mode,              1);
 956                 ir_set_dw_lowered(node, res_low, res_high);
 957         } else {
 958                 ir_node *res_low  = new_r_Proj(resproj, env->low_unsigned, 1);
 959                 ir_node *res_high = new_r_Proj(resproj, mode,              0);
 960                 ir_set_dw_lowered(node, res_low, res_high);
 961         }
 962 }
 963
 964 /**
 965  * Translate a logical binop.
 966  *
 967  * Create two logical binops.
 968  */
 969 static void lower_binop_logical(ir_node *node, ir_mode *mode,
 970                                                                 ir_node *(*constr_rd)(dbg_info *db, ir_node *block, ir_node *op1, ir_node *op2, ir_mode *mode) )
 971 {
 972         ir_node               *left        = get_binop_left(node);
 973         ir_node               *right       = get_binop_right(node);
 974         const lower64_entry_t *left_entry  = get_node_entry(left);
 975         const lower64_entry_t *right_entry = get_node_entry(right);
 976         dbg_info              *dbgi        = get_irn_dbg_info(node);
 977         ir_node               *block       = get_nodes_block(node);
 978         ir_node               *res_low
 979                 = constr_rd(dbgi, block, left_entry->low_word, right_entry->low_word,
 980                             env->low_unsigned);
 981         ir_node               *res_high
 982                 = constr_rd(dbgi, block, left_entry->high_word, right_entry->high_word,
 983                             mode);
 984         ir_set_dw_lowered(node, res_low, res_high);
 985 }
 986
 987 static void lower_And(ir_node *node, ir_mode *mode)
 988 {
 989         lower_binop_logical(node, mode, new_rd_And);
 990 }
 991
 992 static void lower_Or(ir_node *node, ir_mode *mode)
 993 {
 994         lower_binop_logical(node, mode, new_rd_Or);
 995 }
 996
 997 static void lower_Eor(ir_node *node, ir_mode *mode)
 998 {
 999         lower_binop_logical(node, mode, new_rd_Eor);
1000 }
1001
1002 /**
1003  * Translate a Not.
1004  *
1005  * Create two logical Nots.
1006  */
1007 static void lower_Not(ir_node *node, ir_mode *mode)
1008 {
1009         ir_node               *op       = get_Not_op(node);
1010         const lower64_entry_t *op_entry = get_node_entry(op);
1011         dbg_info              *dbgi     = get_irn_dbg_info(node);
1012         ir_node               *block    = get_nodes_block(node);
1013         ir_node               *res_low
1014                 = new_rd_Not(dbgi, block, op_entry->low_word, env->low_unsigned);
1015         ir_node               *res_high
1016                 = new_rd_Not(dbgi, block, op_entry->high_word, mode);
1017         ir_set_dw_lowered(node, res_low, res_high);
1018 }
1019
1020 static bool is_equality_cmp_0(const ir_node *node)
1021 {
1022         ir_relation relation = get_Cmp_relation(node);
1023         ir_node    *left     = get_Cmp_left(node);
1024         ir_node    *right    = get_Cmp_right(node);
1025         ir_mode    *mode     = get_irn_mode(left);
1026
1027         /* this probably makes no sense if unordered is involved */
1028         assert(!mode_is_float(mode));
1029
1030         if (!is_Const(right) || !is_Const_null(right))
1031                 return false;
1032         if (relation == ir_relation_equal)
1033                 return true;
1034         if (mode_is_signed(mode)) {
1035                 return relation == ir_relation_less_greater;
1036         } else {
1037                 return relation == ir_relation_greater;
1038         }
1039 }
1040
1041 /**
1042  * Translate a Cond.
1043  */
1044 static void lower_Cond(ir_node *node, ir_mode *mode)
1045 {
1046         ir_node *left, *right, *block;
1047         ir_node *sel = get_Cond_selector(node);
1048         ir_mode *m = get_irn_mode(sel);
1049         ir_mode *cmp_mode;
1050         const lower64_entry_t *lentry, *rentry;
1051         ir_node  *proj, *projT = NULL, *projF = NULL;
1052         ir_node  *new_bl, *irn;
1053         ir_node  *projHF, *projHT;
1054         ir_node  *dst_blk;
1055         ir_relation relation;
1056         ir_graph *irg;
1057         dbg_info *dbg;
1058
1059         (void) mode;
1060
1061         if (m != mode_b) {
1062                 if (m == env->high_signed || m == env->high_unsigned) {
1063                         /* bad we can't really handle Switch with 64bit offsets */
1064                         panic("Cond with 64bit jumptable not supported");
1065                 }
1066                 lower_node(sel);
1067                 return;
1068         }
1069
1070         if (!is_Cmp(sel)) {
1071                 lower_node(sel);
1072                 return;
1073         }
1074
1075         left     = get_Cmp_left(sel);
1076         cmp_mode = get_irn_mode(left);
1077         if (cmp_mode != env->high_signed && cmp_mode != env->high_unsigned) {
1078                 lower_node(sel);
1079                 return;
1080         }
1081
1082         right  = get_Cmp_right(sel);
1083         lower_node(left);
1084         lower_node(right);
1085         lentry = get_node_entry(left);
1086         rentry = get_node_entry(right);
1087
1088         /* all right, build the code */
1089         for (proj = (ir_node*)get_irn_link(node); proj;
1090              proj = (ir_node*)get_irn_link(proj)) {
1091                 long proj_nr = get_Proj_proj(proj);
1092
1093                 if (proj_nr == pn_Cond_true) {
1094                         assert(projT == NULL && "more than one Proj(true)");
1095                         projT = proj;
1096                 } else {
1097                         assert(proj_nr == pn_Cond_false);
1098                         assert(projF == NULL && "more than one Proj(false)");
1099                         projF = proj;
1100                 }
1101                 mark_irn_visited(proj);
1102         }
1103         assert(projT && projF);
1104
1105         /* create a new high compare */
1106         block    = get_nodes_block(node);
1107         irg      = get_Block_irg(block);
1108         dbg      = get_irn_dbg_info(sel);
1109         relation = get_Cmp_relation(sel);
1110
1111         if (is_equality_cmp_0(sel)) {
1112                 /* x ==/!= 0 ==> or(low,high) ==/!= 0 */
1113                 ir_mode *mode   = env->low_unsigned;
1114                 ir_node *low    = new_r_Conv(block, lentry->low_word, mode);
1115                 ir_node *high   = new_r_Conv(block, lentry->high_word, mode);
1116                 ir_node *ornode = new_rd_Or(dbg, block, low, high, mode);
1117                 ir_node *cmp    = new_rd_Cmp(dbg, block, ornode, new_r_Const_long(irg, mode, 0), relation);
1118                 set_Cond_selector(node, cmp);
1119                 return;
1120         }
1121
1122         if (relation == ir_relation_equal) {
1123                 /* simple case:a == b <==> a_h == b_h && a_l == b_l */
1124                 pmap_entry *entry = pmap_find(env->proj_2_block, projF);
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_equal);
1131                 dbg = get_irn_dbg_info(node);
1132                 irn = new_rd_Cond(dbg, block, irn);
1133
1134                 projHF = new_r_Proj(irn, mode_X, pn_Cond_false);
1135                 mark_irn_visited(projHF);
1136                 exchange(projF, projHF);
1137
1138                 projHT = new_r_Proj(irn, mode_X, pn_Cond_true);
1139                 mark_irn_visited(projHT);
1140
1141                 new_bl = new_r_Block(irg, 1, &projHT);
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_equal);
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_false);
1150                 mark_irn_visited(proj);
1151                 add_block_cf_input(dst_blk, projHF, proj);
1152
1153                 proj = new_r_Proj(irn, mode_X, pn_Cond_true);
1154                 mark_irn_visited(proj);
1155                 exchange(projT, proj);
1156         } else if (relation == ir_relation_less_greater) {
1157                 /* simple case:a != b <==> a_h != b_h || a_l != b_l */
1158                 pmap_entry *entry = pmap_find(env->proj_2_block, projT);
1159
1160                 assert(entry);
1161                 dst_blk = (ir_node*)entry->value;
1162
1163                 irn = new_rd_Cmp(dbg, block, lentry->high_word, rentry->high_word,
1164                                  ir_relation_less_greater);
1165                 dbg = get_irn_dbg_info(node);
1166                 irn = new_rd_Cond(dbg, block, irn);
1167
1168                 projHT = new_r_Proj(irn, mode_X, pn_Cond_true);
1169                 mark_irn_visited(projHT);
1170                 exchange(projT, projHT);
1171
1172                 projHF = new_r_Proj(irn, mode_X, pn_Cond_false);
1173                 mark_irn_visited(projHF);
1174
1175                 new_bl = new_r_Block(irg, 1, &projHF);
1176
1177                 dbg = get_irn_dbg_info(sel);
1178                 irn = new_rd_Cmp(dbg, new_bl, lentry->low_word, rentry->low_word,
1179                                  ir_relation_less_greater);
1180                 dbg = get_irn_dbg_info(node);
1181                 irn = new_rd_Cond(dbg, new_bl, irn);
1182
1183                 proj = new_r_Proj(irn, mode_X, pn_Cond_true);
1184                 mark_irn_visited(proj);
1185                 add_block_cf_input(dst_blk, projHT, proj);
1186
1187                 proj = new_r_Proj(irn, mode_X, pn_Cond_false);
1188                 mark_irn_visited(proj);
1189                 exchange(projF, proj);
1190         } else {
1191                 /* a rel b <==> a_h REL b_h || (a_h == b_h && a_l rel b_l) */
1192                 ir_node *dstT, *dstF, *newbl_eq, *newbl_l;
1193                 ir_node *projEqF;
1194                 pmap_entry *entry;
1195
1196                 entry = pmap_find(env->proj_2_block, projT);
1197                 assert(entry);
1198                 dstT = (ir_node*)entry->value;
1199
1200                 entry = pmap_find(env->proj_2_block, projF);
1201                 assert(entry);
1202                 dstF = (ir_node*)entry->value;
1203
1204                 irn = new_rd_Cmp(dbg, block, lentry->high_word, rentry->high_word,
1205                                  relation & ~ir_relation_equal);
1206                 dbg = get_irn_dbg_info(node);
1207                 irn = new_rd_Cond(dbg, block, irn);
1208
1209                 projHT = new_r_Proj(irn, mode_X, pn_Cond_true);
1210                 mark_irn_visited(projHT);
1211
1212                 projHF = new_r_Proj(irn, mode_X, pn_Cond_false);
1213                 mark_irn_visited(projHF);
1214
1215                 newbl_eq = new_r_Block(irg, 1, &projHF);
1216
1217                 irn = new_rd_Cmp(dbg, block, lentry->high_word, rentry->high_word,
1218                                  ir_relation_equal);
1219                 irn = new_rd_Cond(dbg, newbl_eq, irn);
1220
1221                 projEqF = new_r_Proj(irn, mode_X, pn_Cond_false);
1222                 mark_irn_visited(projEqF);
1223
1224                 proj = new_r_Proj(irn, mode_X, pn_Cond_true);
1225                 mark_irn_visited(proj);
1226
1227                 newbl_l = new_r_Block(irg, 1, &proj);
1228
1229                 dbg = get_irn_dbg_info(sel);
1230                 irn = new_rd_Cmp(dbg, newbl_l, lentry->low_word, rentry->low_word,
1231                                  relation);
1232                 dbg = get_irn_dbg_info(node);
1233                 irn = new_rd_Cond(dbg, newbl_l, irn);
1234
1235                 proj = new_r_Proj(irn, mode_X, pn_Cond_true);
1236                 mark_irn_visited(proj);
1237                 add_block_cf_input(dstT, projT, proj);
1238
1239                 proj = new_r_Proj(irn, mode_X, pn_Cond_false);
1240                 mark_irn_visited(proj);
1241                 add_block_cf_input(dstF, projF, proj);
1242
1243                 exchange(projT, projHT);
1244                 exchange(projF, projEqF);
1245         }
1246
1247         /* we have changed the control flow */
1248         env->flags |= CF_CHANGED;
1249 }
1250
1251 /**
1252  * Translate a Conv to higher_signed
1253  */
1254 static void lower_Conv_to_Ll(ir_node *node)
1255 {
1256         ir_mode  *omode        = get_irn_mode(node);
1257         ir_node  *op           = get_Conv_op(node);
1258         ir_mode  *imode        = get_irn_mode(op);
1259         ir_graph *irg          = get_irn_irg(node);
1260         ir_node  *block        = get_nodes_block(node);
1261         dbg_info *dbg          = get_irn_dbg_info(node);
1262         ir_node  *res_low;
1263         ir_node  *res_high;
1264
1265         ir_mode  *low_unsigned = env->low_unsigned;
1266         ir_mode  *low_signed
1267                 = mode_is_signed(omode) ? env->low_signed : low_unsigned;
1268
1269         if (mode_is_int(imode) || mode_is_reference(imode)) {
1270                 if (imode == env->high_signed || imode == env->high_unsigned) {
1271                         /* a Conv from Lu to Ls or Ls to Lu */
1272                         const lower64_entry_t *op_entry = get_node_entry(op);
1273                         res_low  = op_entry->low_word;
1274                         res_high = new_rd_Conv(dbg, block, op_entry->high_word, low_signed);
1275                 } else {
1276                         /* simple case: create a high word */
1277                         if (imode != low_unsigned)
1278                                 op = new_rd_Conv(dbg, block, op, low_unsigned);
1279
1280                         res_low = op;
1281
1282                         if (mode_is_signed(imode)) {
1283                                 int      c       = get_mode_size_bits(low_signed) - 1;
1284                                 ir_node *cnst    = new_r_Const_long(irg, low_unsigned, c);
1285                                 if (get_irn_mode(op) != low_signed)
1286                                         op = new_rd_Conv(dbg, block, op, low_signed);
1287                                 res_high = new_rd_Shrs(dbg, block, op, cnst, low_signed);
1288                         } else {
1289                                 res_high = new_r_Const(irg, get_mode_null(low_signed));
1290                         }
1291                 }
1292         } else if (imode == mode_b) {
1293                 res_low  = new_rd_Conv(dbg, block, op, low_unsigned);
1294                 res_high = new_r_Const(irg, get_mode_null(low_signed));
1295         } else {
1296                 ir_node *irn, *call;
1297                 ir_type *mtp = get_conv_type(imode, omode);
1298
1299                 irn = get_intrinsic_address(mtp, get_irn_op(node), imode, omode);
1300                 call = new_rd_Call(dbg, block, get_irg_no_mem(irg), irn, 1, &op, mtp);
1301                 set_irn_pinned(call, get_irn_pinned(node));
1302                 irn = new_r_Proj(call, mode_T, pn_Call_T_result);
1303
1304                 res_low  = new_r_Proj(irn, low_unsigned, 0);
1305                 res_high = new_r_Proj(irn, low_signed, 1);
1306         }
1307         ir_set_dw_lowered(node, res_low, res_high);
1308 }
1309
1310 /**
1311  * Translate a Conv from higher_unsigned
1312  */
1313 static void lower_Conv_from_Ll(ir_node *node)
1314 {
1315         ir_node               *op    = get_Conv_op(node);
1316         ir_mode               *omode = get_irn_mode(node);
1317         ir_node               *block = get_nodes_block(node);
1318         dbg_info              *dbg   = get_irn_dbg_info(node);
1319         ir_graph              *irg   = get_irn_irg(node);
1320         const lower64_entry_t *entry = get_node_entry(op);
1321
1322         if (mode_is_int(omode) || mode_is_reference(omode)) {
1323                 op = entry->low_word;
1324
1325                 /* simple case: create a high word */
1326                 if (omode != env->low_unsigned)
1327                         op = new_rd_Conv(dbg, block, op, omode);
1328
1329                 set_Conv_op(node, op);
1330         } else if (omode == mode_b) {
1331                 /* llu ? true : false  <=> (low|high) ? true : false */
1332                 ir_mode *mode   = env->low_unsigned;
1333                 ir_node *ornode = new_rd_Or(dbg, block, entry->low_word,
1334                                             entry->high_word, mode);
1335                 set_Conv_op(node, ornode);
1336         } else {
1337                 ir_node *irn, *call, *in[2];
1338                 ir_mode *imode = get_irn_mode(op);
1339                 ir_type *mtp   = get_conv_type(imode, omode);
1340
1341                 irn   = get_intrinsic_address(mtp, get_irn_op(node), imode, omode);
1342                 in[0] = entry->low_word;
1343                 in[1] = entry->high_word;
1344
1345                 call = new_rd_Call(dbg, block, get_irg_no_mem(irg), irn, 2, in, mtp);
1346                 set_irn_pinned(call, get_irn_pinned(node));
1347                 irn = new_r_Proj(call, mode_T, pn_Call_T_result);
1348
1349                 exchange(node, new_r_Proj(irn, omode, 0));
1350         }
1351 }
1352
1353 /**
1354  * lower Cmp
1355  */
1356 static void lower_Cmp(ir_node *cmp, ir_mode *m)
1357 {
1358         ir_node  *l    = get_Cmp_left(cmp);
1359         ir_mode  *mode = get_irn_mode(l);
1360         ir_node  *r, *low, *high, *t, *res;
1361         ir_relation relation;
1362         ir_node  *block;
1363         dbg_info *dbg;
1364         const lower64_entry_t *lentry;
1365         const lower64_entry_t *rentry;
1366         (void) m;
1367
1368         if (mode != env->high_signed && mode != env->high_unsigned)
1369                 return;
1370
1371         r        = get_Cmp_right(cmp);
1372         lentry   = get_node_entry(l);
1373         rentry   = get_node_entry(r);
1374         relation = get_Cmp_relation(cmp);
1375         block    = get_nodes_block(cmp);
1376         dbg      = get_irn_dbg_info(cmp);
1377
1378         /* easy case for x ==/!= 0 (see lower_Cond for details) */
1379         if (is_equality_cmp_0(cmp)) {
1380                 ir_graph *irg     = get_irn_irg(cmp);
1381                 ir_mode  *mode    = env->low_unsigned;
1382                 ir_node  *low     = new_r_Conv(block, lentry->low_word, mode);
1383                 ir_node  *high    = new_r_Conv(block, lentry->high_word, mode);
1384                 ir_node  *ornode  = new_rd_Or(dbg, block, low, high, mode);
1385                 ir_node  *new_cmp = new_rd_Cmp(dbg, block, ornode, new_r_Const_long(irg, mode, 0), relation);
1386                 exchange(cmp, new_cmp);
1387                 return;
1388         }
1389
1390         if (relation == ir_relation_equal) {
1391                 /* simple case:a == b <==> a_h == b_h && a_l == b_l */
1392                 low  = new_rd_Cmp(dbg, block, lentry->low_word, rentry->low_word,
1393                                   relation);
1394                 high = new_rd_Cmp(dbg, block, lentry->high_word, rentry->high_word,
1395                                   relation);
1396                 res  = new_rd_And(dbg, block, low, high, mode_b);
1397         } else if (relation == ir_relation_less_greater) {
1398                 /* simple case:a != b <==> a_h != b_h || a_l != b_l */
1399                 low  = new_rd_Cmp(dbg, block, lentry->low_word, rentry->low_word,
1400                                   relation);
1401                 high = new_rd_Cmp(dbg, block, lentry->high_word, rentry->high_word,
1402                                   relation);
1403                 res = new_rd_Or(dbg, block, low, high, mode_b);
1404         } else {
1405                 /* a rel b <==> a_h REL b_h || (a_h == b_h && a_l rel b_l) */
1406                 ir_node *high1 = new_rd_Cmp(dbg, block, lentry->high_word,
1407                         rentry->high_word, relation & ~ir_relation_equal);
1408                 low  = new_rd_Cmp(dbg, block, lentry->low_word, rentry->low_word,
1409                                   relation);
1410                 high = new_rd_Cmp(dbg, block, lentry->high_word, rentry->high_word,
1411                                   ir_relation_equal);
1412                 t = new_rd_And(dbg, block, low, high, mode_b);
1413                 res = new_rd_Or(dbg, block, high1, t, mode_b);
1414         }
1415         exchange(cmp, res);
1416 }
1417
1418 /**
1419  * Translate a Conv.
1420  */
1421 static void lower_Conv(ir_node *node, ir_mode *mode)
1422 {
1423         mode = get_irn_mode(node);
1424
1425         if (mode == env->high_signed || mode == env->high_unsigned) {
1426                 lower_Conv_to_Ll(node);
1427         } else {
1428                 ir_mode *op_mode = get_irn_mode(get_Conv_op(node));
1429
1430                 if (op_mode == env->high_signed || op_mode == env->high_unsigned) {
1431                         lower_Conv_from_Ll(node);
1432                 }
1433         }
1434 }
1435
1436 /**
1437  * Remember the new argument index of this value type entity in the lowered
1438  * method type.
1439  *
1440  * @param ent  the entity
1441  * @param pos  the argument index of this entity
1442  */
1443 static inline void set_entity_arg_idx(ir_entity *ent, size_t pos)
1444 {
1445         set_entity_link(ent, INT_TO_PTR(pos));
1446 }
1447
1448 /**
1449  * Retrieve the argument index of a value type entity.
1450  *
1451  * @param ent  the entity
1452  */
1453 static size_t get_entity_arg_idx(const ir_entity *ent) {
1454         return PTR_TO_INT(get_entity_link(ent));
1455 }
1456
1457 /**
1458  * Lower the method type.
1459  *
1460  * @param env  the lower environment
1461  * @param mtp  the method type to lower
1462  *
1463  * @return the lowered type
1464  */
1465 static ir_type *lower_mtp(ir_type *mtp)
1466 {
1467         pmap_entry *entry;
1468         ir_type    *res, *value_type;
1469
1470         entry = pmap_find(lowered_type, mtp);
1471         if (! entry) {
1472                 size_t i, orig_n_params, orig_n_res, n_param, n_res;
1473
1474                 /* count new number of params */
1475                 n_param = orig_n_params = get_method_n_params(mtp);
1476                 for (i = orig_n_params; i > 0;) {
1477                         ir_type *tp = get_method_param_type(mtp, --i);
1478
1479                         if (is_Primitive_type(tp)) {
1480                                 ir_mode *mode = get_type_mode(tp);
1481
1482                                 if (mode == env->high_signed || mode == env->high_unsigned)
1483                                         ++n_param;
1484                         }
1485                 }
1486
1487                 /* count new number of results */
1488                 n_res = orig_n_res = get_method_n_ress(mtp);
1489                 for (i = orig_n_res; i > 0;) {
1490                         ir_type *tp = get_method_res_type(mtp, --i);
1491
1492                         if (is_Primitive_type(tp)) {
1493                                 ir_mode *mode = get_type_mode(tp);
1494
1495                                 if (mode == env->high_signed || mode == env->high_unsigned)
1496                                         ++n_res;
1497                         }
1498                 }
1499
1500                 res = new_type_method(n_param, n_res);
1501
1502                 /* set param types and result types */
1503                 for (i = n_param = 0; i < orig_n_params; ++i) {
1504                         ir_type *tp = get_method_param_type(mtp, i);
1505
1506                         if (is_Primitive_type(tp)) {
1507                                 ir_mode *mode = get_type_mode(tp);
1508
1509                                 if (mode == env->high_signed) {
1510                                         if (env->params->little_endian) {
1511                                                 set_method_param_type(res, n_param++, tp_u);
1512                                                 set_method_param_type(res, n_param++, tp_s);
1513                                         } else {
1514                                                 set_method_param_type(res, n_param++, tp_s);
1515                                                 set_method_param_type(res, n_param++, tp_u);
1516                                         }
1517                                 } else if (mode == env->high_unsigned) {
1518                                         set_method_param_type(res, n_param++, tp_u);
1519                                         set_method_param_type(res, n_param++, tp_u);
1520                                 } else {
1521                                         set_method_param_type(res, n_param++, tp);
1522                                 }
1523                         } else {
1524                                 set_method_param_type(res, n_param++, tp);
1525                         }
1526                 }
1527                 for (i = n_res = 0; i < orig_n_res; ++i) {
1528                         ir_type *tp = get_method_res_type(mtp, i);
1529
1530                         if (is_Primitive_type(tp)) {
1531                                 ir_mode *mode = get_type_mode(tp);
1532
1533                                 if (mode == env->high_signed) {
1534                                         if (env->params->little_endian) {
1535                                                 set_method_res_type(res, n_res++, tp_u);
1536                                                 set_method_res_type(res, n_res++, tp_s);
1537                                         } else {
1538                                                 set_method_res_type(res, n_res++, tp_s);
1539                                                 set_method_res_type(res, n_res++, tp_u);
1540                                         }
1541                                 } else if (mode == env->high_unsigned) {
1542                                         set_method_res_type(res, n_res++, tp_u);
1543                                         set_method_res_type(res, n_res++, tp_u);
1544                                 } else {
1545                                         set_method_res_type(res, n_res++, tp);
1546                                 }
1547                         } else {
1548                                 set_method_res_type(res, n_res++, tp);
1549                         }
1550                 }
1551                 set_lowered_type(mtp, res);
1552                 pmap_insert(lowered_type, mtp, res);
1553
1554                 value_type = get_method_value_param_type(mtp);
1555                 if (value_type != NULL) {
1556                         /* this creates a new value parameter type */
1557                         (void)get_method_value_param_ent(res, 0);
1558
1559                         /* set new param positions for all entities of the value type */
1560                         for (i = n_param = 0; i < orig_n_params; ++i) {
1561                                 ir_type   *tp  = get_method_param_type(mtp, i);
1562                                 ir_entity *ent = get_method_value_param_ent(mtp, i);
1563
1564                                 set_entity_arg_idx(ent, n_param);
1565                                 if (is_Primitive_type(tp)) {
1566                                         ir_mode *mode = get_type_mode(tp);
1567
1568                                         if (mode == env->high_signed
1569                                             || mode == env->high_unsigned) {
1570                                                 n_param += 2;
1571                                                 continue;
1572                                         }
1573                                 }
1574                                 ++n_param;
1575                         }
1576
1577                         set_lowered_type(value_type, get_method_value_param_type(res));
1578                 }
1579         } else {
1580                 res = (ir_type*)entry->value;
1581         }
1582         return res;
1583 }
1584
1585 /**
1586  * Translate a Return.
1587  */
1588 static void lower_Return(ir_node *node, ir_mode *mode)
1589 {
1590         ir_graph  *irg = get_irn_irg(node);
1591         ir_entity *ent = get_irg_entity(irg);
1592         ir_type   *mtp = get_entity_type(ent);
1593         ir_node  **in;
1594         size_t     i, j, n;
1595         int        need_conv = 0;
1596         (void) mode;
1597
1598         /* check if this return must be lowered */
1599         for (i = 0, n = get_Return_n_ress(node); i < n; ++i) {
1600                 ir_node *pred = get_Return_res(node, i);
1601                 ir_mode *mode = get_irn_op_mode(pred);
1602
1603                 if (mode == env->high_signed || mode == env->high_unsigned)
1604                         need_conv = 1;
1605         }
1606         if (! need_conv)
1607                 return;
1608
1609         ent = get_irg_entity(irg);
1610         mtp = get_entity_type(ent);
1611
1612         mtp = lower_mtp(mtp);
1613         set_entity_type(ent, mtp);
1614
1615         /* create a new in array */
1616         NEW_ARR_A(ir_node *, in, get_method_n_ress(mtp) + 1);
1617         in[0] = get_Return_mem(node);
1618
1619         for (j = i = 0, n = get_Return_n_ress(node); i < n; ++i) {
1620                 ir_node *pred      = get_Return_res(node, i);
1621                 ir_mode *pred_mode = get_irn_mode(pred);
1622
1623                 if (pred_mode == env->high_signed || pred_mode == env->high_unsigned) {
1624                         const lower64_entry_t *entry = get_node_entry(pred);
1625                         if (env->params->little_endian) {
1626                                 in[++j] = entry->low_word;
1627                                 in[++j] = entry->high_word;
1628                         } else {
1629                                 in[++j] = entry->high_word;
1630                                 in[++j] = entry->low_word;
1631                         }
1632                 } else {
1633                         in[++j] = pred;
1634                 }
1635         }
1636
1637         set_irn_in(node, j+1, in);
1638 }
1639
1640 /**
1641  * Translate the parameters.
1642  */
1643 static void lower_Start(ir_node *node, ir_mode *mode)
1644 {
1645         ir_graph  *irg = get_irn_irg(node);
1646         ir_entity *ent = get_irg_entity(irg);
1647         ir_type   *tp  = get_entity_type(ent);
1648         long      *new_projs;
1649         size_t    i, j, n_params;
1650         int       rem;
1651         ir_node   *proj, *args;
1652         (void) mode;
1653
1654         if (!mtp_must_be_lowered(tp))
1655                 return;
1656
1657         n_params = get_method_n_params(tp);
1658
1659         NEW_ARR_A(long, new_projs, n_params);
1660
1661         /* Calculate mapping of proj numbers in new_projs */
1662         for (i = j = 0; i < n_params; ++i, ++j) {
1663                 ir_type *ptp = get_method_param_type(tp, i);
1664
1665                 new_projs[i] = j;
1666                 if (is_Primitive_type(ptp)) {
1667                         ir_mode *mode = get_type_mode(ptp);
1668
1669                         if (mode == env->high_signed || mode == env->high_unsigned)
1670                                 ++j;
1671                 }
1672         }
1673
1674         /* lower method type */
1675         tp = lower_mtp(tp);
1676         set_entity_type(ent, tp);
1677
1678         /* switch off optimization for new Proj nodes or they might be CSE'ed
1679            with not patched one's */
1680         rem = get_optimize();
1681         set_optimize(0);
1682
1683         /* fix all Proj's and create new ones */
1684         args = get_irg_args(irg);
1685         for (proj = (ir_node*)get_irn_link(node); proj;
1686              proj = (ir_node*)get_irn_link(proj)) {
1687                 ir_node *pred = get_Proj_pred(proj);
1688                 long proj_nr;
1689                 ir_mode *mode;
1690                 ir_mode *mode_l;
1691                 ir_mode *mode_h;
1692                 ir_node *res_low;
1693                 ir_node *res_high;
1694                 dbg_info *dbg;
1695
1696                 /* do not visit this node again */
1697                 mark_irn_visited(proj);
1698
1699                 if (pred != args)
1700                         continue;
1701
1702                 proj_nr = get_Proj_proj(proj);
1703                 set_Proj_proj(proj, new_projs[proj_nr]);
1704
1705                 mode = get_irn_mode(proj);
1706                 mode_l = env->low_unsigned;
1707                 if (mode == env->high_signed) {
1708                         mode_h = env->low_signed;
1709                 } else if (mode == env->high_unsigned) {
1710                         mode_h = env->low_unsigned;
1711                 } else {
1712                         continue;
1713                 }
1714
1715                 dbg = get_irn_dbg_info(proj);
1716                 if (env->params->little_endian) {
1717                         res_low  = new_rd_Proj(dbg, args, mode_l, new_projs[proj_nr]);
1718                         res_high = new_rd_Proj(dbg, args, mode_h, new_projs[proj_nr] + 1);
1719                 } else {
1720                         res_high = new_rd_Proj(dbg, args, mode_h, new_projs[proj_nr]);
1721                         res_low  = new_rd_Proj(dbg, args, mode_l, new_projs[proj_nr] + 1);
1722                 }
1723                 ir_set_dw_lowered(proj, res_low, res_high);
1724         }
1725         set_optimize(rem);
1726 }
1727
1728 /**
1729  * Translate a Call.
1730  */
1731 static void lower_Call(ir_node *node, ir_mode *mode)
1732 {
1733         ir_type  *tp = get_Call_type(node);
1734         ir_node  **in, *proj, *results;
1735         size_t   n_params, n_res;
1736         bool     need_lower = false;
1737         size_t   i, j;
1738         size_t   p;
1739         long     *res_numbers = NULL;
1740         (void) mode;
1741
1742         n_params = get_method_n_params(tp);
1743         for (p = 0; p < n_params; ++p) {
1744                 ir_type *ptp = get_method_param_type(tp, p);
1745
1746                 if (is_Primitive_type(ptp)) {
1747                         ir_mode *mode = get_type_mode(ptp);
1748
1749                         if (mode == env->high_signed || mode == env->high_unsigned) {
1750                                 need_lower = true;
1751                                 break;
1752                         }
1753                 }
1754         }
1755         n_res = get_method_n_ress(tp);
1756         if (n_res > 0) {
1757                 NEW_ARR_A(long, res_numbers, n_res);
1758
1759                 for (i = j = 0; i < n_res; ++i, ++j) {
1760                         ir_type *ptp = get_method_res_type(tp, i);
1761
1762                         res_numbers[i] = j;
1763                         if (is_Primitive_type(ptp)) {
1764                                 ir_mode *mode = get_type_mode(ptp);
1765
1766                                 if (mode == env->high_signed || mode == env->high_unsigned) {
1767                                         need_lower = true;
1768                                         ++j;
1769                                 }
1770                         }
1771                 }
1772         }
1773
1774         if (! need_lower)
1775                 return;
1776
1777         /* let's lower it */
1778         tp = lower_mtp(tp);
1779         set_Call_type(node, tp);
1780
1781         NEW_ARR_A(ir_node *, in, get_method_n_params(tp) + 2);
1782
1783         in[0] = get_Call_mem(node);
1784         in[1] = get_Call_ptr(node);
1785
1786         for (j = 2, i = 0; i < n_params; ++i) {
1787                 ir_node *pred      = get_Call_param(node, i);
1788                 ir_mode *pred_mode = get_irn_mode(pred);
1789
1790                 if (pred_mode == env->high_signed || pred_mode == env->high_unsigned) {
1791                         const lower64_entry_t *pred_entry = get_node_entry(pred);
1792                         if (env->params->little_endian) {
1793                                 in[j++] = pred_entry->low_word;
1794                                 in[j++] = pred_entry->high_word;
1795                         } else {
1796                                 in[j++] = pred_entry->high_word;
1797                                 in[j++] = pred_entry->low_word;
1798                         }
1799                 } else {
1800                         in[j++] = pred;
1801                 }
1802         }
1803
1804         set_irn_in(node, j, in);
1805
1806         /* fix the results */
1807         results = NULL;
1808         for (proj = (ir_node*)get_irn_link(node); proj;
1809              proj = (ir_node*)get_irn_link(proj)) {
1810                 long proj_nr = get_Proj_proj(proj);
1811
1812                 if (proj_nr == pn_Call_T_result && get_Proj_pred(proj) == node) {
1813                         /* found the result proj */
1814                         results = proj;
1815                         break;
1816                 }
1817         }
1818
1819         if (results != NULL) {    /* there are results */
1820                 int rem = get_optimize();
1821
1822                 /* switch off optimization for new Proj nodes or they might be CSE'ed
1823                    with not patched one's */
1824                 set_optimize(0);
1825                 for (proj = (ir_node*)get_irn_link(results); proj; proj = (ir_node*)get_irn_link(proj)) {
1826                         if (get_Proj_pred(proj) == results) {
1827                                 long      proj_nr   = get_Proj_proj(proj);
1828                                 ir_mode  *proj_mode = get_irn_mode(proj);
1829                                 ir_mode  *mode_l;
1830                                 ir_mode  *mode_h;
1831                                 ir_node  *res_low;
1832                                 ir_node  *res_high;
1833                                 dbg_info *dbg;
1834
1835                                 /* found a result */
1836                                 mark_irn_visited(proj);
1837
1838                                 set_Proj_proj(proj, res_numbers[proj_nr]);
1839
1840                                 mode_l = env->low_unsigned;
1841                                 if (proj_mode == env->high_signed) {
1842                                         mode_h = env->low_signed;
1843                                 } else if (proj_mode == env->high_unsigned) {
1844                                         mode_h = env->low_unsigned;
1845                                 } else {
1846                                         continue;
1847                                 }
1848
1849                                 dbg      = get_irn_dbg_info(proj);
1850                                 if (env->params->little_endian) {
1851                                         res_low  = new_rd_Proj(dbg, results, mode_l,
1852                                                                res_numbers[proj_nr]);
1853                                         res_high = new_rd_Proj(dbg, results, mode_h,
1854                                                                res_numbers[proj_nr] + 1);
1855                                 } else {
1856                                         res_high = new_rd_Proj(dbg, results, mode_h,
1857                                                                res_numbers[proj_nr]);
1858                                         res_low  = new_rd_Proj(dbg, results, mode_l,
1859                                                                res_numbers[proj_nr] + 1);
1860                                 }
1861                                 ir_set_dw_lowered(proj, res_low, res_high);
1862                         }
1863                 }
1864                 set_optimize(rem);
1865         }
1866 }
1867
1868 /**
1869  * Translate an Unknown into two.
1870  */
1871 static void lower_Unknown(ir_node *node, ir_mode *mode)
1872 {
1873         ir_mode  *low_mode = env->low_unsigned;
1874         ir_graph *irg      = get_irn_irg(node);
1875         ir_node  *res_low  = new_r_Unknown(irg, low_mode);
1876         ir_node  *res_high = new_r_Unknown(irg, mode);
1877         ir_set_dw_lowered(node, res_low, res_high);
1878 }
1879
1880 /**
1881  * Translate a Bad into two.
1882  */
1883 static void lower_Bad(ir_node *node, ir_mode *mode)
1884 {
1885         ir_mode  *low_mode = env->low_unsigned;
1886         ir_graph *irg      = get_irn_irg(node);
1887         ir_node  *res_low  = new_r_Bad(irg, low_mode);
1888         ir_node  *res_high = new_r_Bad(irg, mode);
1889         ir_set_dw_lowered(node, res_low, res_high);
1890 }
1891
1892 /**
1893  * Translate a Phi.
1894  *
1895  * First step: just create two templates
1896  */
1897 static void lower_Phi(ir_node *phi)
1898 {
1899         ir_mode  *mode = get_irn_mode(phi);
1900         int       i;
1901         int       arity;
1902         ir_node **in_l;
1903         ir_node **in_h;
1904         ir_node  *unk_l;
1905         ir_node  *unk_h;
1906         ir_node  *phi_l;
1907         ir_node  *phi_h;
1908         dbg_info *dbg;
1909         ir_node  *block;
1910         ir_graph *irg;
1911         ir_mode  *mode_l;
1912         ir_mode  *mode_h;
1913
1914         /* enqueue predecessors */
1915         arity = get_Phi_n_preds(phi);
1916         for (i = 0; i < arity; ++i) {
1917                 ir_node *pred = get_Phi_pred(phi, i);
1918                 pdeq_putr(env->waitq, pred);
1919         }
1920
1921         if (mode != env->high_signed && mode != env->high_unsigned)
1922                 return;
1923
1924         /* first create a new in array */
1925         NEW_ARR_A(ir_node *, in_l, arity);
1926         NEW_ARR_A(ir_node *, in_h, arity);
1927         irg    = get_irn_irg(phi);
1928         mode_l = env->low_unsigned;
1929         mode_h = mode == env->high_signed ? env->low_signed : env->low_unsigned;
1930         unk_l  = new_r_Dummy(irg, mode_l);
1931         unk_h  = new_r_Dummy(irg, mode_h);
1932         for (i = 0; i < arity; ++i) {
1933                 in_l[i] = unk_l;
1934                 in_h[i] = unk_h;
1935         }
1936
1937         dbg   = get_irn_dbg_info(phi);
1938         block = get_nodes_block(phi);
1939         phi_l = new_rd_Phi(dbg, block, arity, in_l, mode_l);
1940         phi_h = new_rd_Phi(dbg, block, arity, in_h, mode_h);
1941
1942         ir_set_dw_lowered(phi, phi_l, phi_h);
1943
1944         /* remember that we need to fixup the predecessors later */
1945         ARR_APP1(ir_node*, env->lowered_phis, phi);
1946
1947         /* Don't forget to link the new Phi nodes into the block.
1948          * Beware that some Phis might be optimized away. */
1949         if (is_Phi(phi_l))
1950                 add_Block_phi(block, phi_l);
1951         if (is_Phi(phi_h))
1952                 add_Block_phi(block, phi_h);
1953 }
1954
1955 static void fixup_phi(ir_node *phi)
1956 {
1957         const lower64_entry_t *entry = get_node_entry(phi);
1958         ir_node               *phi_l = entry->low_word;
1959         ir_node               *phi_h = entry->high_word;
1960         int                    arity = get_Phi_n_preds(phi);
1961         int                    i;
1962
1963         /* exchange phi predecessors which are lowered by now */
1964         for (i = 0; i < arity; ++i) {
1965                 ir_node               *pred       = get_Phi_pred(phi, i);
1966                 const lower64_entry_t *pred_entry = get_node_entry(pred);
1967
1968                 set_Phi_pred(phi_l, i, pred_entry->low_word);
1969                 set_Phi_pred(phi_h, i, pred_entry->high_word);
1970         }
1971 }
1972
1973 /**
1974  * Translate a Mux.
1975  */
1976 static void lower_Mux(ir_node *mux, ir_mode *mode)
1977 {
1978         ir_node               *truen       = get_Mux_true(mux);
1979         ir_node               *falsen      = get_Mux_false(mux);
1980         ir_node               *sel         = get_Mux_sel(mux);
1981         const lower64_entry_t *true_entry  = get_node_entry(truen);
1982         const lower64_entry_t *false_entry = get_node_entry(falsen);
1983         ir_node               *true_l      = true_entry->low_word;
1984         ir_node               *true_h      = true_entry->high_word;
1985         ir_node               *false_l     = false_entry->low_word;
1986         ir_node               *false_h     = false_entry->high_word;
1987         dbg_info              *dbgi        = get_irn_dbg_info(mux);
1988         ir_node               *block       = get_nodes_block(mux);
1989         ir_node               *res_low
1990                 = new_rd_Mux(dbgi, block, sel, false_l, true_l, env->low_unsigned);
1991         ir_node               *res_high
1992                 = new_rd_Mux(dbgi, block, sel, false_h, true_h, mode);
1993         ir_set_dw_lowered(mux, res_low, res_high);
1994 }
1995
1996 /**
1997  * Translate an ASM node.
1998  */
1999 static void lower_ASM(ir_node *asmn, ir_mode *mode)
2000 {
2001         ir_mode           *high_signed        = env->high_signed;
2002         ir_mode           *high_unsigned      = env->high_unsigned;
2003         int                n_outs             = get_ASM_n_output_constraints(asmn);
2004         ir_asm_constraint *output_constraints = get_ASM_output_constraints(asmn);
2005         ir_asm_constraint *input_constraints  = get_ASM_input_constraints(asmn);
2006         unsigned           n_64bit_outs       = 0;
2007         int      i;
2008         ir_node *n;
2009
2010         (void)mode;
2011
2012         for (i = get_irn_arity(asmn) - 1; i >= 0; --i) {
2013                 ir_node *op      = get_irn_n(asmn, i);
2014                 ir_mode *op_mode = get_irn_mode(op);
2015                 if (op_mode == high_signed || op_mode == high_unsigned) {
2016                         panic("lowering ASM 64bit input unimplemented");
2017                 }
2018         }
2019
2020         for (i = 0; i < n_outs; ++i) {
2021                 const ir_asm_constraint *constraint = &output_constraints[i];
2022                 if (constraint->mode == high_signed || constraint->mode == high_unsigned) {
2023                         const char *constr = get_id_str(constraint->constraint);
2024                         ++n_64bit_outs;
2025                         /* TODO: How to do this architecture neutral? This is very
2026                          * i386 specific... */
2027                         if (constr[0] != '=' || constr[1] != 'A') {
2028                                 panic("lowering ASM 64bit output only supports '=A' currently");
2029                         }
2030                 }
2031         }
2032
2033         if (n_64bit_outs == 0)
2034                 return;
2035
2036         {
2037                 dbg_info          *dbgi       = get_irn_dbg_info(asmn);
2038                 ir_node           *block      = get_nodes_block(asmn);
2039                 int                arity      = get_irn_arity(asmn);
2040                 ir_node          **in         = get_irn_in(asmn) + 1;
2041                 int                n_outs     = get_ASM_n_output_constraints(asmn);
2042                 int                new_n_outs = 0;
2043                 int                n_clobber  = get_ASM_n_clobbers(asmn);
2044                 long              *proj_map   = ALLOCAN(long, n_outs);
2045                 ident            **clobbers   = get_ASM_clobbers(asmn);
2046                 ident             *asm_text   = get_ASM_text(asmn);
2047                 ir_asm_constraint *new_outputs
2048                         = ALLOCAN(ir_asm_constraint, n_outs+n_64bit_outs);
2049                 ir_node           *new_asm;
2050
2051                 for (i = 0; i < n_outs; ++i) {
2052                         const ir_asm_constraint *constraint = &output_constraints[i];
2053                         if (constraint->mode == high_signed || constraint->mode == high_unsigned) {
2054                                 new_outputs[new_n_outs].pos        = constraint->pos;
2055                                 new_outputs[new_n_outs].constraint = new_id_from_str("=a");
2056                                 new_outputs[new_n_outs].mode       = env->low_unsigned;
2057                                 proj_map[i] = new_n_outs;
2058                                 ++new_n_outs;
2059                                 new_outputs[new_n_outs].pos        = constraint->pos;
2060                                 new_outputs[new_n_outs].constraint = new_id_from_str("=d");
2061                                 if (constraint->mode == high_signed)
2062                                         new_outputs[new_n_outs].mode = env->low_signed;
2063                                 else
2064                                         new_outputs[new_n_outs].mode = env->low_unsigned;
2065                                 ++new_n_outs;
2066                         } else {
2067                                 new_outputs[new_n_outs] = *constraint;
2068                                 proj_map[i] = new_n_outs;
2069                                 ++new_n_outs;
2070                         }
2071                 }
2072                 assert(new_n_outs == n_outs+(int)n_64bit_outs);
2073
2074                 new_asm = new_rd_ASM(dbgi, block, arity, in, input_constraints,
2075                                      new_n_outs, new_outputs, n_clobber, clobbers,
2076                                      asm_text);
2077
2078                 for (n = asmn;;) {
2079                         long pn;
2080                         ir_mode *proj_mode;
2081                         n = (ir_node*)get_irn_link(n);
2082                         if (n == NULL)
2083                                 break;
2084                         proj_mode = get_irn_mode(n);
2085                         pn = get_Proj_proj(n);
2086                         if (pn < n_outs)
2087                                 pn = proj_map[pn];
2088                         else
2089                                 pn = new_n_outs + pn - n_outs;
2090
2091                         if (proj_mode == high_signed || proj_mode == high_unsigned) {
2092                                 ir_mode *high_mode
2093                                         = proj_mode == high_signed ? env->low_signed : env->low_unsigned;
2094                                 ir_node *np_low  = new_r_Proj(new_asm, env->low_unsigned, pn);
2095                                 ir_node *np_high = new_r_Proj(new_asm, high_mode, pn+1);
2096                                 ir_set_dw_lowered(n, np_low, np_high);
2097                         } else {
2098                                 ir_node *np = new_r_Proj(new_asm, proj_mode, pn);
2099                                 exchange(n, np);
2100                         }
2101                 }
2102         }
2103 }
2104
2105 /**
2106  * Translate a Sel node.
2107  */
2108 static void lower_Sel(ir_node *sel, ir_mode *mode)
2109 {
2110         (void) mode;
2111
2112         /* we must only lower value parameter Sels if we change the
2113            value parameter type. */
2114         if (env->value_param_tp != NULL) {
2115                 ir_entity *ent = get_Sel_entity(sel);
2116             if (get_entity_owner(ent) == env->value_param_tp) {
2117                         size_t pos = get_entity_arg_idx(ent);
2118
2119                         ent = get_method_value_param_ent(env->l_mtp, pos);
2120                         set_Sel_entity(sel, ent);
2121                 }
2122         }
2123 }
2124
2125 /**
2126  * check for opcodes that must always be lowered.
2127  */
2128 static bool always_lower(unsigned code)
2129 {
2130         switch (code) {
2131         case iro_ASM:
2132         case iro_Proj:
2133         case iro_Start:
2134         case iro_Call:
2135         case iro_Return:
2136         case iro_Cond:
2137         case iro_Conv:
2138         case iro_Sel:
2139                 return true;
2140         default:
2141                 return false;
2142         }
2143 }
2144
2145 /**
2146  * Compare two op_mode_entry_t's.
2147  */
2148 static int cmp_op_mode(const void *elt, const void *key, size_t size)
2149 {
2150         const op_mode_entry_t *e1 = (const op_mode_entry_t*)elt;
2151         const op_mode_entry_t *e2 = (const op_mode_entry_t*)key;
2152         (void) size;
2153
2154         return (e1->op != e2->op) | (e1->imode != e2->imode) | (e1->omode != e2->omode);
2155 }
2156
2157 /**
2158  * Compare two conv_tp_entry_t's.
2159  */
2160 static int cmp_conv_tp(const void *elt, const void *key, size_t size)
2161 {
2162         const conv_tp_entry_t *e1 = (const conv_tp_entry_t*)elt;
2163         const conv_tp_entry_t *e2 = (const conv_tp_entry_t*)key;
2164         (void) size;
2165
2166         return (e1->imode != e2->imode) | (e1->omode != e2->omode);
2167 }
2168
2169 /**
2170  * Enter a lowering function into an ir_op.
2171  */
2172 void ir_register_dw_lower_function(ir_op *op, lower_dw_func func)
2173 {
2174         op->ops.generic = (op_func)func;
2175 }
2176
2177 /**
2178  * Returns non-zero if a method type must be lowered.
2179  *
2180  * @param mtp  the method type
2181  */
2182 static bool mtp_must_be_lowered(ir_type *mtp)
2183 {
2184         size_t i, n_params = get_method_n_params(mtp);
2185
2186         /* first check if we have parameters that must be fixed */
2187         for (i = 0; i < n_params; ++i) {
2188                 ir_type *tp = get_method_param_type(mtp, i);
2189
2190                 if (is_Primitive_type(tp)) {
2191                         ir_mode *mode = get_type_mode(tp);
2192
2193                         if (mode == env->high_signed || mode == env->high_unsigned)
2194                                 return true;
2195                 }
2196         }
2197         return false;
2198 }
2199
2200 /* Determine which modes need to be lowered */
2201 static void setup_modes(void)
2202 {
2203         unsigned           size_bits           = env->params->doubleword_size;
2204         ir_mode           *doubleword_signed   = NULL;
2205         ir_mode           *doubleword_unsigned = NULL;
2206         size_t             n_modes             = get_irp_n_modes();
2207         ir_mode_arithmetic arithmetic;
2208         unsigned           modulo_shift;
2209         size_t             i;
2210
2211         /* search for doubleword modes... */
2212         for (i = 0; i < n_modes; ++i) {
2213                 ir_mode *mode = get_irp_mode(i);
2214                 if (!mode_is_int(mode))
2215                         continue;
2216                 if (get_mode_size_bits(mode) != size_bits)
2217                         continue;
2218                 if (mode_is_signed(mode)) {
2219                         if (doubleword_signed != NULL) {
2220                                 /* sigh - the lowerer should really just lower all mode with
2221                                  * size_bits it finds. Unfortunately this required a bigger
2222                                  * rewrite. */
2223                                 panic("multiple double word signed modes found");
2224                         }
2225                         doubleword_signed = mode;
2226                 } else {
2227                         if (doubleword_unsigned != NULL) {
2228                                 /* sigh - the lowerer should really just lower all mode with
2229                                  * size_bits it finds. Unfortunately this required a bigger
2230                                  * rewrite. */
2231                                 panic("multiple double word unsigned modes found");
2232                         }
2233                         doubleword_unsigned = mode;
2234                 }
2235         }
2236         if (doubleword_signed == NULL || doubleword_unsigned == NULL) {
2237                 panic("Couldn't find doubleword modes");
2238         }
2239
2240         arithmetic   = get_mode_arithmetic(doubleword_signed);
2241         modulo_shift = get_mode_modulo_shift(doubleword_signed);
2242
2243         assert(get_mode_size_bits(doubleword_unsigned) == size_bits);
2244         assert(size_bits % 2 == 0);
2245         assert(get_mode_sign(doubleword_signed) == 1);
2246         assert(get_mode_sign(doubleword_unsigned) == 0);
2247         assert(get_mode_sort(doubleword_signed) == irms_int_number);
2248         assert(get_mode_sort(doubleword_unsigned) == irms_int_number);
2249         assert(get_mode_arithmetic(doubleword_unsigned) == arithmetic);
2250         assert(get_mode_modulo_shift(doubleword_unsigned) == modulo_shift);
2251
2252         /* try to guess a sensible modulo shift for the new mode.
2253          * (This is IMO another indication that this should really be a node
2254          *  attribute instead of a mode thing) */
2255         if (modulo_shift == size_bits) {
2256                 modulo_shift = modulo_shift / 2;
2257         } else if (modulo_shift == 0) {
2258                 /* fine */
2259         } else {
2260                 panic("Don't know what new modulo shift to use for lowered doubleword mode");
2261         }
2262         size_bits /= 2;
2263
2264         /* produce lowered modes */
2265         env->high_signed   = doubleword_signed;
2266         env->high_unsigned = doubleword_unsigned;
2267         env->low_signed    = new_ir_mode("WS", irms_int_number, size_bits, 1,
2268                                          arithmetic, modulo_shift);
2269         env->low_unsigned  = new_ir_mode("WU", irms_int_number, size_bits, 0,
2270                                          arithmetic, modulo_shift);
2271 }
2272
2273 static void enqueue_preds(ir_node *node)
2274 {
2275         int arity = get_irn_arity(node);
2276         int i;
2277
2278         for (i = 0; i < arity; ++i) {
2279                 ir_node *pred = get_irn_n(node, i);
2280                 pdeq_putr(env->waitq, pred);
2281         }
2282 }
2283
2284 static void lower_node(ir_node *node)
2285 {
2286         int              arity;
2287         int              i;
2288         lower_dw_func    func;
2289         ir_op           *op;
2290         ir_mode         *mode;
2291         unsigned         idx;
2292         lower64_entry_t *entry;
2293
2294         if (irn_visited_else_mark(node))
2295                 return;
2296
2297         /* cycles are always broken at Phi and Block nodes. So we don't need special
2298          * magic in all the other lower functions */
2299         if (is_Block(node)) {
2300                 enqueue_preds(node);
2301                 return;
2302         } else if (is_Phi(node)) {
2303                 lower_Phi(node);
2304                 return;
2305         }
2306
2307         /* depth-first: descend into operands */
2308         if (!is_Block(node)) {
2309                 ir_node *block = get_nodes_block(node);
2310                 lower_node(block);
2311         }
2312
2313         if (!is_Cond(node)) {
2314                 arity = get_irn_arity(node);
2315                 for (i = 0; i < arity; ++i) {
2316                         ir_node *pred = get_irn_n(node, i);
2317                         lower_node(pred);
2318                 }
2319         }
2320
2321         op   = get_irn_op(node);
2322         func = (lower_dw_func) op->ops.generic;
2323         if (func == NULL)
2324                 return;
2325
2326         idx   = get_irn_idx(node);
2327         entry = idx < env->n_entries ? env->entries[idx] : NULL;
2328         if (entry != NULL || always_lower(get_irn_opcode(node))) {
2329                 mode = get_irn_op_mode(node);
2330                 if (mode == env->high_signed) {
2331                         mode = env->low_signed;
2332                 } else {
2333                         mode = env->low_unsigned;
2334                 }
2335                 DB((dbg, LEVEL_1, "  %+F\n", node));
2336                 func(node, mode);
2337         }
2338 }
2339
2340 static void lower_irg(ir_graph *irg)
2341 {
2342         ir_entity *ent;
2343         ir_type   *mtp;
2344         unsigned   n_idx;
2345
2346         obstack_init(&env->obst);
2347
2348         n_idx = get_irg_last_idx(irg);
2349         n_idx = n_idx + (n_idx >> 2);  /* add 25% */
2350         env->n_entries = n_idx;
2351         env->entries   = NEW_ARR_F(lower64_entry_t*, n_idx);
2352         memset(env->entries, 0, sizeof(env->entries[0]) * n_idx);
2353
2354         env->irg            = irg;
2355         env->l_mtp          = NULL;
2356         env->flags          = 0;
2357         env->proj_2_block   = pmap_create();
2358         env->value_param_tp = NULL;
2359
2360         ent = get_irg_entity(irg);
2361         mtp = get_entity_type(ent);
2362
2363         if (mtp_must_be_lowered(mtp)) {
2364                 ir_type *ltp = lower_mtp(mtp);
2365                 /* Do not update the entity type yet, this will be done by lower_Start! */
2366                 env->flags |= MUST_BE_LOWERED;
2367                 env->l_mtp = ltp;
2368                 env->value_param_tp = get_method_value_param_type(mtp);
2369         }
2370
2371         /* first step: link all nodes and allocate data */
2372         ir_reserve_resources(irg, IR_RESOURCE_PHI_LIST | IR_RESOURCE_IRN_LINK);
2373         irg_walk_graph(irg, firm_clear_node_and_phi_links,
2374                        prepare_links_and_handle_rotl, env);
2375
2376         if (env->flags & MUST_BE_LOWERED) {
2377                 size_t i;
2378                 ir_reserve_resources(irg, IR_RESOURCE_IRN_VISITED);
2379                 inc_irg_visited(irg);
2380
2381                 assert(pdeq_empty(env->waitq));
2382                 pdeq_putr(env->waitq, get_irg_end(irg));
2383
2384                 env->lowered_phis = NEW_ARR_F(ir_node*, 0);
2385                 while (!pdeq_empty(env->waitq)) {
2386                         ir_node *node = (ir_node*)pdeq_getl(env->waitq);
2387                         lower_node(node);
2388                 }
2389
2390                 /* we need to fixup phis */
2391                 for (i = 0; i < ARR_LEN(env->lowered_phis); ++i) {
2392                         ir_node *phi = env->lowered_phis[i];
2393                         fixup_phi(phi);
2394                 }
2395                 DEL_ARR_F(env->lowered_phis);
2396
2397
2398                 ir_free_resources(irg, IR_RESOURCE_IRN_VISITED);
2399
2400                 if (env->flags & CF_CHANGED) {
2401                         /* control flow changed, dominance info is invalid */
2402                         set_irg_doms_inconsistent(irg);
2403                         set_irg_extblk_inconsistent(irg);
2404                 }
2405         }
2406
2407         ir_free_resources(irg, IR_RESOURCE_PHI_LIST | IR_RESOURCE_IRN_LINK);
2408
2409         pmap_destroy(env->proj_2_block);
2410         DEL_ARR_F(env->entries);
2411         obstack_free(&env->obst, NULL);
2412 }
2413
2414 static const lwrdw_param_t *param;
2415
2416 void ir_prepare_dw_lowering(const lwrdw_param_t *new_param)
2417 {
2418         assert(new_param != NULL);
2419         FIRM_DBG_REGISTER(dbg, "firm.lower.dw");
2420
2421         param = new_param;
2422
2423         clear_irp_opcodes_generic_func();
2424         ir_register_dw_lower_function(op_ASM,     lower_ASM);
2425         ir_register_dw_lower_function(op_Add,     lower_binop);
2426         ir_register_dw_lower_function(op_And,     lower_And);
2427         ir_register_dw_lower_function(op_Bad,     lower_Bad);
2428         ir_register_dw_lower_function(op_Call,    lower_Call);
2429         ir_register_dw_lower_function(op_Cmp,     lower_Cmp);
2430         ir_register_dw_lower_function(op_Cond,    lower_Cond);
2431         ir_register_dw_lower_function(op_Const,   lower_Const);
2432         ir_register_dw_lower_function(op_Conv,    lower_Conv);
2433         ir_register_dw_lower_function(op_Div,     lower_Div);
2434         ir_register_dw_lower_function(op_Eor,     lower_Eor);
2435         ir_register_dw_lower_function(op_Load,    lower_Load);
2436         ir_register_dw_lower_function(op_Minus,   lower_unop);
2437         ir_register_dw_lower_function(op_Mod,     lower_Mod);
2438         ir_register_dw_lower_function(op_Mul,     lower_binop);
2439         ir_register_dw_lower_function(op_Mux,     lower_Mux);
2440         ir_register_dw_lower_function(op_Not,     lower_Not);
2441         ir_register_dw_lower_function(op_Or,      lower_Or);
2442         ir_register_dw_lower_function(op_Return,  lower_Return);
2443         ir_register_dw_lower_function(op_Sel,     lower_Sel);
2444         ir_register_dw_lower_function(op_Shl,     lower_Shl);
2445         ir_register_dw_lower_function(op_Shr,     lower_Shr);
2446         ir_register_dw_lower_function(op_Shrs,    lower_Shrs);
2447         ir_register_dw_lower_function(op_Start,   lower_Start);
2448         ir_register_dw_lower_function(op_Store,   lower_Store);
2449         ir_register_dw_lower_function(op_Sub,     lower_binop);
2450         ir_register_dw_lower_function(op_Unknown, lower_Unknown);
2451 }
2452
2453 /*
2454  * Do the lowering.
2455  */
2456 void ir_lower_dw_ops(void)
2457 {
2458         lower_dw_env_t lenv;
2459         size_t      i, n;
2460
2461         memset(&lenv, 0, sizeof(lenv));
2462         lenv.params = param;
2463         env = &lenv;
2464
2465         setup_modes();
2466
2467         /* create the necessary maps */
2468         if (! intrinsic_fkt)
2469                 intrinsic_fkt = new_set(cmp_op_mode, iro_Last + 1);
2470         if (! conv_types)
2471                 conv_types = new_set(cmp_conv_tp, 16);
2472         if (! lowered_type)
2473                 lowered_type = pmap_create();
2474
2475         /* create a primitive unsigned and signed type */
2476         if (! tp_u)
2477                 tp_u = get_type_for_mode(lenv.low_unsigned);
2478         if (! tp_s)
2479                 tp_s = get_type_for_mode(lenv.low_signed);
2480
2481         /* create method types for the created binop calls */
2482         if (! binop_tp_u) {
2483                 binop_tp_u = new_type_method(4, 2);
2484                 set_method_param_type(binop_tp_u, 0, tp_u);
2485                 set_method_param_type(binop_tp_u, 1, tp_u);
2486                 set_method_param_type(binop_tp_u, 2, tp_u);
2487                 set_method_param_type(binop_tp_u, 3, tp_u);
2488                 set_method_res_type(binop_tp_u, 0, tp_u);
2489                 set_method_res_type(binop_tp_u, 1, tp_u);
2490         }
2491         if (! binop_tp_s) {
2492                 binop_tp_s = new_type_method(4, 2);
2493                 if (env->params->little_endian) {
2494                         set_method_param_type(binop_tp_s, 0, tp_u);
2495                         set_method_param_type(binop_tp_s, 1, tp_s);
2496                         set_method_param_type(binop_tp_s, 2, tp_u);
2497                         set_method_param_type(binop_tp_s, 3, tp_s);
2498                         set_method_res_type(binop_tp_s, 0, tp_u);
2499                         set_method_res_type(binop_tp_s, 1, tp_s);
2500                 } else {
2501                         set_method_param_type(binop_tp_s, 0, tp_s);
2502                         set_method_param_type(binop_tp_s, 1, tp_u);
2503                         set_method_param_type(binop_tp_s, 2, tp_s);
2504                         set_method_param_type(binop_tp_s, 3, tp_u);
2505                         set_method_res_type(binop_tp_s, 0, tp_s);
2506                         set_method_res_type(binop_tp_s, 1, tp_u);
2507                 }
2508         }
2509         if (! shiftop_tp_u) {
2510                 shiftop_tp_u = new_type_method(3, 2);
2511                 set_method_param_type(shiftop_tp_u, 0, tp_u);
2512                 set_method_param_type(shiftop_tp_u, 1, tp_u);
2513                 set_method_param_type(shiftop_tp_u, 2, tp_u);
2514                 set_method_res_type(shiftop_tp_u, 0, tp_u);
2515                 set_method_res_type(shiftop_tp_u, 1, tp_u);
2516         }
2517         if (! shiftop_tp_s) {
2518                 shiftop_tp_s = new_type_method(3, 2);
2519                 set_method_param_type(shiftop_tp_s, 0, tp_u);
2520                 set_method_param_type(shiftop_tp_s, 1, tp_s);
2521                 set_method_param_type(shiftop_tp_s, 2, tp_u);
2522                 set_method_res_type(shiftop_tp_s, 0, tp_u);
2523                 set_method_res_type(shiftop_tp_s, 1, tp_s);
2524         }
2525         if (! unop_tp_u) {
2526                 unop_tp_u = new_type_method(2, 2);
2527                 set_method_param_type(unop_tp_u, 0, tp_u);
2528                 set_method_param_type(unop_tp_u, 1, tp_u);
2529                 set_method_res_type(unop_tp_u, 0, tp_u);
2530                 set_method_res_type(unop_tp_u, 1, tp_u);
2531         }
2532         if (! unop_tp_s) {
2533                 unop_tp_s = new_type_method(2, 2);
2534                 if (env->params->little_endian) {
2535                         set_method_param_type(unop_tp_s, 0, tp_u);
2536                         set_method_param_type(unop_tp_s, 1, tp_s);
2537                         set_method_res_type(unop_tp_s, 0, tp_u);
2538                         set_method_res_type(unop_tp_s, 1, tp_s);
2539                 } else {
2540                         set_method_param_type(unop_tp_s, 0, tp_s);
2541                         set_method_param_type(unop_tp_s, 1, tp_u);
2542                         set_method_res_type(unop_tp_s, 0, tp_s);
2543                         set_method_res_type(unop_tp_s, 1, tp_u);
2544                 }
2545         }
2546
2547         lenv.tv_mode_bytes = new_tarval_from_long(param->doubleword_size/(2*8), lenv.low_unsigned);
2548         lenv.tv_mode_bits  = new_tarval_from_long(param->doubleword_size/2, lenv.low_unsigned);
2549         lenv.waitq         = new_pdeq();
2550         lenv.first_id      = new_id_from_chars(param->little_endian ? ".l" : ".h", 2);
2551         lenv.next_id       = new_id_from_chars(param->little_endian ? ".h" : ".l", 2);
2552
2553         /* transform all graphs */
2554         for (i = 0, n = get_irp_n_irgs(); i < n; ++i) {
2555                 ir_graph *irg = get_irp_irg(i);
2556                 lower_irg(irg);
2557         }
2558         del_pdeq(lenv.waitq);
2559
2560         env = NULL;
2561 }
2562
2563 /* Default implementation. */
2564 ir_entity *def_create_intrinsic_fkt(ir_type *method, const ir_op *op,
2565                                     const ir_mode *imode, const ir_mode *omode,
2566                                     void *context)
2567 {
2568         char buf[64];
2569         ident *id;
2570         ir_entity *ent;
2571         (void) context;
2572
2573         if (imode == omode) {
2574                 snprintf(buf, sizeof(buf), "__l%s%s", get_op_name(op), get_mode_name(imode));
2575         } else {
2576                 snprintf(buf, sizeof(buf), "__l%s%s%s", get_op_name(op),
2577                         get_mode_name(imode), get_mode_name(omode));
2578         }
2579         id = new_id_from_str(buf);
2580
2581         ent = new_entity(get_glob_type(), id, method);
2582         set_entity_ld_ident(ent, get_entity_ident(ent));
2583         return ent;
2584 }