src/vm/jit/allocator/simplereg.c

   1 /* src/vm/jit/allocator/simplereg.c - register allocator
   2
   3    Copyright (C) 1996-2005 R. Grafl, A. Krall, C. Kruegel, C. Oates,
   4    R. Obermaisser, M. Platter, M. Probst, S. Ring, E. Steiner,
   5    C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich, J. Wenninger,
   6    Institut f. Computersprachen - TU Wien
   7
   8    This file is part of CACAO.
   9
  10    This program is free software; you can redistribute it and/or
  11    modify it under the terms of the GNU General Public License as
  12    published by the Free Software Foundation; either version 2, or (at
  13    your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful, but
  16    WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18    General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  23    02111-1307, USA.
  24
  25    Contact: cacao@complang.tuwien.ac.at
  26
  27    Authors: Andreas Krall
  28
  29    Changes: Stefan Ring
  30             Christian Thalinger
  31             Christian Ullrich
  32             Michael Starzinger
  33             Edwin Steiner
  34
  35    $Id: simplereg.c 5633 2006-10-02 13:59:13Z edwin $
  36
  37 */
  38
  39
  40 #include "config.h"
  41 #include "vm/types.h"
  42
  43 #include <assert.h>
  44
  45 #include "arch.h"
  46 #include "md-abi.h"
  47
  48 #include "vm/builtin.h"
  49 #include "vm/exceptions.h"
  50 #include "mm/memory.h"
  51 #include "vm/method.h"
  52 #include "vm/options.h"
  53 #include "vm/resolve.h"
  54 #include "vm/stringlocal.h"
  55 #include "vm/jit/reg.h"
  56 #include "vm/jit/allocator/simplereg.h"
  57
  58
  59 /* function prototypes for this file ******************************************/
  60
  61 static void interface_regalloc(jitdata *jd);
  62 static void local_regalloc(jitdata *jd);
  63 static void new_allocate_scratch_registers(jitdata *jd);
  64 static void allocate_scratch_registers(jitdata *jd);
  65
  66
  67 /* regalloc ********************************************************************
  68
  69    Does a simple register allocation.
  70
  71 *******************************************************************************/
  72
  73 bool new_regalloc(jitdata *jd)
  74 {
  75         /* There is a problem with the use of unused float argument
  76            registers in leafmethods for stackslots on c7 (2 * Dual Core
  77            AMD Opteron(tm) Processor 270) - runtime for the jvm98 _mtrt
  78            benchmark is heaviliy increased. This could be prevented by
  79            setting rd->argfltreguse to FLT_ARG_CNT before calling
  80            allocate_scratch_registers and setting it back to the original
  81            value before calling local_regalloc.  */
  82
  83         interface_regalloc(jd);
  84         new_allocate_scratch_registers(jd);
  85         local_regalloc(jd);
  86
  87         /* everthing's ok */
  88
  89         return true;
  90 }
  91
  92 /* interface_regalloc **********************************************************
  93
  94    Allocates registers for all interface variables.
  95
  96 *******************************************************************************/
  97
  98 static void interface_regalloc(jitdata *jd)
  99 {
 100         methodinfo   *m;
 101         codegendata  *cd;
 102         registerdata *rd;
 103
 104         int     s, t, tt, saved;
 105         int     intalloc, fltalloc; /* Remember allocated Register/Memory offset */
 106                         /* in case more vars are packed into this interface slot */
 107         int             intregsneeded = 0;
 108         int             memneeded = 0;
 109     /* allocate LNG and DBL Types first to ensure 2 memory slots or registers */
 110         /* on HAS_4BYTE_STACKSLOT architectures */
 111         int     typeloop[] = { TYPE_LNG, TYPE_DBL, TYPE_INT, TYPE_FLT, TYPE_ADR };
 112         int flags, regoff;
 113
 114         /* get required compiler data */
 115
 116         m  = jd->m;
 117         cd = jd->cd;
 118         rd = jd->rd;
 119
 120         /* rd->memuse was already set in stack.c to allocate stack space
 121            for passing arguments to called methods. */
 122
 123 #if defined(__I386__)
 124         if (checksync && (m->flags & ACC_SYNCHRONIZED)) {
 125                 /* reserve 0(%esp) for Monitorenter/exit Argument on i386 */
 126                 if (rd->memuse < 1)
 127                         rd->memuse = 1;
 128         }
 129 #endif
 130
 131         if (jd->isleafmethod) {
 132                 /* Reserve argument register, which will be used for Locals acting */
 133                 /* as Parameters */
 134                 if (rd->argintreguse < m->parseddesc->argintreguse)
 135                         rd->argintreguse = m->parseddesc->argintreguse;
 136                 if (rd->argfltreguse < m->parseddesc->argfltreguse)
 137                         rd->argfltreguse = m->parseddesc->argfltreguse;
 138 #ifdef HAS_ADDRESS_REGISTER_FILE
 139                 if (rd->argadrreguse < m->parseddesc->argadrreguse)
 140                         rd->argadrreguse = m->parseddesc->argadrreguse;
 141 #endif
 142
 143         }
 144
 145         for (s = 0; s < cd->maxstack; s++) {
 146                 intalloc = -1; fltalloc = -1;
 147
 148                 saved = 0;
 149
 150                 for (tt = 0; tt <=4; tt++) {
 151                         if ((t = jd->interface_map[s * 5 + tt].flags) != UNUSED) {
 152                                 saved |= t & SAVEDVAR;
 153                         }
 154                 }
 155
 156                 for (tt = 0; tt <= 4; tt++) {
 157                         t = typeloop[tt];
 158                         if (jd->interface_map[s * 5 + t].flags == UNUSED)
 159                                 continue;
 160
 161                         flags = saved;
 162                         regoff = -1; /* XXX for debugging */
 163
 164 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 165                                 intregsneeded = (IS_2_WORD_TYPE(t)) ? 1 : 0;
 166 #endif
 167 #if defined(HAS_4BYTE_STACKSLOT)
 168                                 memneeded = (IS_2_WORD_TYPE(t)) ? 1 : 0;
 169 #endif
 170                                 if (!saved) {
 171 #if defined(HAS_ADDRESS_REGISTER_FILE)
 172                                         if (IS_ADR_TYPE(t)) {
 173                                                 if (!jd->isleafmethod
 174                                                         &&(rd->argadrreguse < ADR_ARG_CNT)) {
 175                                                         regoff = rd->argadrregs[rd->argadrreguse++];
 176                                                 } else if (rd->tmpadrreguse > 0) {
 177                                                                 regoff = rd->tmpadrregs[--rd->tmpadrreguse];
 178                                                 } else if (rd->savadrreguse > 0) {
 179                                                                 regoff = rd->savadrregs[--rd->savadrreguse];
 180                                                 } else {
 181                                                         flags |= INMEMORY;
 182                                                         regoff = rd->memuse++;
 183                                                 }
 184                                         } else /* !IS_ADR_TYPE */
 185 #endif /* defined(HAS_ADDRESS_REGISTER_FILE) */
 186                                         {
 187                                                 if (IS_FLT_DBL_TYPE(t)) {
 188                                                         if (fltalloc >= 0) {
 189                        /* Reuse memory slot(s)/register(s) for shared interface slots */
 190                                                                 flags |= jd->interface_map[fltalloc].flags & INMEMORY;
 191                                                                 regoff = jd->interface_map[fltalloc].regoff;
 192                                                         } else if (rd->argfltreguse < FLT_ARG_CNT) {
 193                                                                 regoff = rd->argfltregs[rd->argfltreguse++];
 194                                                         } else if (rd->tmpfltreguse > 0) {
 195                                                                 regoff = rd->tmpfltregs[--rd->tmpfltreguse];
 196                                                         } else if (rd->savfltreguse > 0) {
 197                                                                 regoff = rd->savfltregs[--rd->savfltreguse];
 198                                                         } else {
 199                                                                 flags |= INMEMORY;
 200 #if defined(ALIGN_DOUBLES_IN_MEMORY)
 201                                                                 /* Align doubles in Memory */
 202                                                                 if ( (memneeded) && (rd->memuse & 1))
 203                                                                         rd->memuse++;
 204 #endif
 205                                                                 regoff = rd->memuse;
 206                                                                 rd->memuse += memneeded + 1;
 207                                                         }
 208                                                         fltalloc = s * 5 + t;
 209                                                 } else { /* !IS_FLT_DBL_TYPE(t) */
 210 #if defined(HAS_4BYTE_STACKSLOT) && !defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 211                                                         /*
 212                                                          * for i386 put all longs in memory
 213                                                          */
 214                                                         if (IS_2_WORD_TYPE(t)) {
 215                                                                 flags |= INMEMORY;
 216 #if defined(ALIGN_LONGS_IN_MEMORY)
 217                                                                 /* Align longs in Memory */
 218                                                                 if (rd->memuse & 1)
 219                                                                         rd->memuse++;
 220 #endif
 221                                                                 regoff = rd->memuse;
 222                                                                 rd->memuse += memneeded + 1;
 223                                                         } else
 224 #endif /* defined(HAS_4BYTE_STACKSLOT) && !defined(SUPPORT_COMBINE...GISTERS) */
 225                                                                 if (intalloc >= 0) {
 226                        /* Reuse memory slot(s)/register(s) for shared interface slots */
 227                                                                         flags |= jd->interface_map[intalloc].flags & INMEMORY;
 228 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 229                                                                         if (!(flags & INMEMORY)
 230                                                                           && IS_2_WORD_TYPE(intalloc % 5))
 231                                                                                 regoff = GET_LOW_REG(
 232                                                                                         jd->interface_map[intalloc].regoff);
 233                                                                         else
 234 #endif
 235                                                                                 regoff =
 236                                                                                     jd->interface_map[intalloc].regoff;
 237                                                                 } else
 238                                                                         if (rd->argintreguse + intregsneeded
 239                                                                                 < INT_ARG_CNT) {
 240 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 241                                                                                 if (intregsneeded)
 242                                                                                         regoff=PACK_REGS(
 243                                                                                   rd->argintregs[rd->argintreguse],
 244                                                                                   rd->argintregs[rd->argintreguse + 1]);
 245                                                                                 else
 246 #endif
 247                                                                                         regoff =
 248                                                                                            rd->argintregs[rd->argintreguse];
 249                                                                                 rd->argintreguse += intregsneeded + 1;
 250                                                                         }
 251                                                                         else if (rd->tmpintreguse > intregsneeded) {
 252                                                                                 rd->tmpintreguse -= intregsneeded + 1;
 253 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 254                                                                                 if (intregsneeded)
 255                                                                                         regoff=PACK_REGS(
 256                                                                                   rd->tmpintregs[rd->tmpintreguse],
 257                                                                                   rd->tmpintregs[rd->tmpintreguse + 1]);
 258                                                                                 else
 259 #endif
 260                                                                                         regoff =
 261                                                                                            rd->tmpintregs[rd->tmpintreguse];
 262                                                                         }
 263                                                                         else if (rd->savintreguse > intregsneeded) {
 264                                                                                 rd->savintreguse -= intregsneeded + 1;
 265                                                                                 regoff =
 266                                                                                         rd->savintregs[rd->savintreguse];
 267 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 268                                                                                 if (intregsneeded)
 269                                                                                         regoff=PACK_REGS(
 270                                                                                   rd->savintregs[rd->savintreguse],
 271                                                                                   rd->savintregs[rd->savintreguse + 1]);
 272                                                                                 else
 273 #endif
 274                                                                                         regoff =
 275                                                                                            rd->savintregs[rd->savintreguse];
 276                                                                         }
 277                                                                         else {
 278                                                                                 flags |= INMEMORY;
 279 #if defined(ALIGN_LONGS_IN_MEMORY)
 280                                                                                 /* Align longs in Memory */
 281                                                                                 if ( (memneeded) && (rd->memuse & 1))
 282                                                                                         rd->memuse++;
 283 #endif
 284                                                                                 regoff = rd->memuse;
 285                                                                                 rd->memuse += memneeded + 1;
 286                                                                         }
 287
 288                                                         intalloc = s * 5 + t;
 289                                                 } /* if (IS_FLT_DBL_TYPE(t)) */
 290                                         }
 291                                 } else { /* (saved) */
 292 /* now the same like above, but without a chance to take a temporary register */
 293 #ifdef HAS_ADDRESS_REGISTER_FILE
 294                                         if (IS_ADR_TYPE(t)) {
 295                                                 if (rd->savadrreguse > 0) {
 296                                                         regoff = rd->savadrregs[--rd->savadrreguse];
 297                                                 }
 298                                                 else {
 299                                                         flags |= INMEMORY;
 300                                                         regoff = rd->memuse++;
 301                                                 }
 302                                         } else
 303 #endif
 304                                         {
 305                                                 if (IS_FLT_DBL_TYPE(t)) {
 306                                                         if (fltalloc >= 0) {
 307                                                                 flags |= jd->interface_map[fltalloc].flags & INMEMORY;
 308                                                                 regoff = jd->interface_map[fltalloc].regoff;
 309                                                         } else
 310                                                                 if (rd->savfltreguse > 0) {
 311                                                                         regoff =
 312                                                                                 rd->savfltregs[--rd->savfltreguse];
 313                                                                 }
 314                                                                 else {
 315                                                                         flags |= INMEMORY;
 316 #if defined(ALIGN_DOUBLES_IN_MEMORY)
 317                                                                         /* Align doubles in Memory */
 318                                                                         if ( (memneeded) && (rd->memuse & 1))
 319                                                                                 rd->memuse++;
 320 #endif
 321                                                                         regoff = rd->memuse;
 322                                                                         rd->memuse += memneeded + 1;
 323                                                                 }
 324                                                         fltalloc = s * 5 + t;
 325                                                 }
 326                                                 else { /* IS_INT_LNG */
 327 #if defined(HAS_4BYTE_STACKSLOT) && !defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 328                                                         /*
 329                                                          * for i386 put all longs in memory
 330                                                          */
 331                                                         if (IS_2_WORD_TYPE(t)) {
 332                                                                 flags |= INMEMORY;
 333 #if defined(ALIGN_LONGS_IN_MEMORY)
 334                                                                 /* Align longs in Memory */
 335                                                                 if (rd->memuse & 1)
 336                                                                         rd->memuse++;
 337 #endif
 338                                                                 regoff = rd->memuse;
 339                                                                 rd->memuse += memneeded + 1;
 340                                                         } else
 341 #endif
 342                                                         {
 343                                                                 if (intalloc >= 0) {
 344                                                                         flags |= jd->interface_map[intalloc].flags & INMEMORY;
 345 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 346                                                                         if (!(flags & INMEMORY)
 347                                                                           && IS_2_WORD_TYPE(intalloc % 5))
 348                                                                                 regoff =
 349                                                                                         GET_LOW_REG(
 350                                                                                         jd->interface_map[intalloc].regoff);
 351                                                                         else
 352 #endif
 353                                                                                 regoff =
 354                                                                                     jd->interface_map[intalloc].regoff;
 355                                                                 } else {
 356                                                                         if (rd->savintreguse > intregsneeded) {
 357                                                                                 rd->savintreguse -= intregsneeded + 1;
 358 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 359                                                                                 if (intregsneeded)
 360                                                                                         regoff = PACK_REGS(
 361                                                                                   rd->savintregs[rd->savintreguse],
 362                                                                                   rd->savintregs[rd->savintreguse + 1]);
 363                                                                                 else
 364 #endif
 365                                                                                         regoff =
 366                                                                                            rd->savintregs[rd->savintreguse];
 367                                                                         } else {
 368                                                                                 flags |= INMEMORY;
 369 #if defined(ALIGN_LONGS_IN_MEMORY)
 370                                                                         /* Align longs in Memory */
 371                                                                         if ( (memneeded) && (rd->memuse & 1))
 372                                                                                 rd->memuse++;
 373 #endif
 374                                                                                 regoff = rd->memuse;
 375                                                                                 rd->memuse += memneeded + 1;
 376                                                                         }
 377                                                                 }
 378                                                                 intalloc = s*5 + t;
 379                                                         }
 380                                                 } /* if (IS_FLT_DBL_TYPE(t) else */
 381                                         } /* if (IS_ADR_TYPE(t)) else */
 382                                 } /* if (saved) else */
 383                         /* if (type >= 0) */
 384
 385                         assert(regoff >= 0);
 386                         jd->interface_map[5*s + t].flags = flags | INOUT;
 387                         jd->interface_map[5*s + t].regoff = regoff;
 388                 } /* for t */
 389         } /* for s */
 390 }
 391
 392
 393
 394 /* local_regalloc **************************************************************
 395
 396    Allocates registers for all local variables.
 397
 398 *******************************************************************************/
 399
 400 static void local_regalloc(jitdata *jd)
 401 {
 402         methodinfo   *m;
 403         codegendata  *cd;
 404         registerdata *rd;
 405
 406         int     p, s, t, tt,lm;
 407         int     intalloc, fltalloc;
 408         varinfo *v;
 409         int     intregsneeded = 0;
 410         int     memneeded = 0;
 411         int     typeloop[] = { TYPE_LNG, TYPE_DBL, TYPE_INT, TYPE_FLT, TYPE_ADR };
 412         int     fargcnt, iargcnt;
 413 #ifdef HAS_ADDRESS_REGISTER_FILE
 414         int     aargcnt;
 415 #endif
 416
 417         /* get required compiler data */
 418
 419         m  = jd->m;
 420         cd = jd->cd;
 421         rd = jd->rd;
 422
 423         if (jd->isleafmethod) {
 424                 methoddesc *md = m->parseddesc;
 425
 426                 iargcnt = rd->argintreguse;
 427                 fargcnt = rd->argfltreguse;
 428 #ifdef HAS_ADDRESS_REGISTER_FILE
 429                 aargcnt = rd->argadrreguse;
 430 #endif
 431                 for (p = 0, s = 0; s < cd->maxlocals; s++, p++) {
 432                         intalloc = -1; fltalloc = -1;
 433                         for (tt = 0; tt <= 4; tt++) {
 434                                 t = typeloop[tt];
 435                                 lm = jd->local_map[s * 5 + t];
 436                                 if (lm == UNUSED)
 437                                         continue;
 438
 439                                 v = VAR(lm);
 440
 441 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 442                                 intregsneeded = (IS_2_WORD_TYPE(t)) ? 1 : 0;
 443 #endif
 444 #if defined(HAS_4BYTE_STACKSLOT)
 445                                 memneeded = (IS_2_WORD_TYPE(t)) ? 1 : 0;
 446 #endif
 447
 448                                 /*
 449                                  *  The order of
 450                                  *
 451                                  *  #ifdef HAS_ADDRESS_REGISTER_FILE
 452                                  *  if (IS_ADR_TYPE) {
 453                                  *  ...
 454                                  *  } else
 455                                  *  #endif
 456                                  *  if (IS_FLT_DBL) {
 457                                  *  ...
 458                                  *  } else { / int & lng
 459                                  *  ...
 460                                  *  }
 461                                  *
 462                                  *  must not to be changed!
 463                                  */
 464
 465 #ifdef HAS_ADDRESS_REGISTER_FILE
 466                                 if (IS_ADR_TYPE(t)) {
 467                                         if ((p < md->paramcount) && !md->params[p].inmemory) {
 468                                                 v->flags = 0;
 469                                                 v->vv.regoff = rd->argadrregs[md->params[p].regoff];
 470                                         }
 471                                         else if (rd->tmpadrreguse > 0) {
 472                                                 v->flags = 0;
 473                                                 v->vv.regoff = rd->tmpadrregs[--rd->tmpadrreguse];
 474                                         }
 475                                         /* use unused argument registers as local registers */
 476                                         else if ((p >= md->paramcount) &&
 477                                                          (aargcnt < ADR_ARG_CNT)) {
 478                                                 v->flags = 0;
 479                                                 v->vv.regoff = rd->argadrregs[aargcnt++];
 480                                         }
 481                                         else if (rd->savadrreguse > 0) {
 482                                                 v->flags = 0;
 483                                                 v->vv.regoff = rd->savadrregs[--rd->savadrreguse];
 484                                         }
 485                                         else {
 486                                                 v->flags |= INMEMORY;
 487                                                 v->vv.regoff = rd->memuse++;
 488                                         }
 489                                 } else {
 490 #endif
 491                                         if (IS_FLT_DBL_TYPE(t)) {
 492                                                 if (fltalloc >= 0) {
 493                                                         v->flags = VAR(fltalloc)->flags;
 494                                                         v->vv.regoff = VAR(fltalloc)->vv.regoff;
 495                                                 }
 496 #if !defined(SUPPORT_PASS_FLOATARGS_IN_INTREGS)
 497                                                 /* We can only use float arguments as local variables,
 498                                                  * if we do not pass them in integer registers. */
 499                                                 else if ((p < md->paramcount) &&
 500                                                                  !md->params[p].inmemory) {
 501                                                         v->flags = 0;
 502                                                         v->vv.regoff = rd->argfltregs[md->params[p].regoff];
 503                                                 }
 504 #endif
 505                                                 else if (rd->tmpfltreguse > 0) {
 506                                                         v->flags = 0;
 507                                                         v->vv.regoff = rd->tmpfltregs[--rd->tmpfltreguse];
 508                                                 }
 509                                                 /* use unused argument registers as local registers */
 510                                                 else if ((p >= md->paramcount) &&
 511                                                                  (fargcnt < FLT_ARG_CNT)) {
 512                                                         v->flags = 0;
 513                                                         v->vv.regoff = rd->argfltregs[fargcnt];
 514                                                         fargcnt++;
 515                                                 }
 516                                                 else if (rd->savfltreguse > 0) {
 517                                                         v->flags = 0;
 518                                                         v->vv.regoff = rd->savfltregs[--rd->savfltreguse];
 519                                                 }
 520                                                 else {
 521                                                         v->flags = INMEMORY;
 522 #if defined(ALIGN_DOUBLES_IN_MEMORY)
 523                                                         /* Align doubles in Memory */
 524                                                         if ( (memneeded) && (rd->memuse & 1))
 525                                                                 rd->memuse++;
 526 #endif
 527                                                         v->vv.regoff = rd->memuse;
 528                                                         rd->memuse += memneeded + 1;
 529                                                 }
 530                                                 fltalloc = jd->local_map[s * 5 + t];
 531
 532                                         } else {
 533 #if defined(HAS_4BYTE_STACKSLOT) && !defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 534                                                 /*
 535                                                  * for i386 put all longs in memory
 536                                                  */
 537                                                 if (IS_2_WORD_TYPE(t)) {
 538                                                         v->flags = INMEMORY;
 539 #if defined(ALIGN_LONGS_IN_MEMORY)
 540                                                         /* Align longs in Memory */
 541                                                         if (rd->memuse & 1)
 542                                                                 rd->memuse++;
 543 #endif
 544                                                         v->vv.regoff = rd->memuse;
 545                                                         rd->memuse += memneeded + 1;
 546                                                 } else
 547 #endif
 548                                                 {
 549                                                         if (intalloc >= 0) {
 550                                                                 v->flags = VAR(intalloc)->flags;
 551 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 552                                                                 if (!(v->flags & INMEMORY)
 553                                                                         && IS_2_WORD_TYPE(VAR(intalloc)->type))
 554                                                                         v->vv.regoff = GET_LOW_REG(
 555                                                                                                         VAR(intalloc)->vv.regoff);
 556                                                                 else
 557 #endif
 558                                                                         v->vv.regoff = VAR(intalloc)->vv.regoff;
 559                                                         }
 560                                                         else if ((p < md->paramcount) &&
 561                                                                          !md->params[p].inmemory) {
 562                                                                 v->flags = 0;
 563 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 564                                                                 if (IS_2_WORD_TYPE(t))
 565                                                                         v->vv.regoff = PACK_REGS(
 566                                                         rd->argintregs[GET_LOW_REG(md->params[p].regoff)],
 567                                                         rd->argintregs[GET_HIGH_REG(md->params[p].regoff)]);
 568                                                                         else
 569 #endif
 570                                                                                 v->vv.regoff =
 571                                                                                rd->argintregs[md->params[p].regoff];
 572                                                         }
 573                                                         else if (rd->tmpintreguse > intregsneeded) {
 574                                                                 rd->tmpintreguse -= intregsneeded + 1;
 575                                                                 v->flags = 0;
 576 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 577                                                                 if (intregsneeded)
 578                                                                         v->vv.regoff = PACK_REGS(
 579                                                                             rd->tmpintregs[rd->tmpintreguse],
 580                                                                                 rd->tmpintregs[rd->tmpintreguse + 1]);
 581                                                                 else
 582 #endif
 583                                                                         v->vv.regoff =
 584                                                                                 rd->tmpintregs[rd->tmpintreguse];
 585                                                         }
 586                                                         /*
 587                                                          * use unused argument registers as local registers
 588                                                          */
 589                                                         else if ((p >= m->parseddesc->paramcount) &&
 590                                                                          (iargcnt + intregsneeded < INT_ARG_CNT)) {
 591                                                                 v->flags = 0;
 592 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 593                                                                 if (intregsneeded)
 594                                                                         v->vv.regoff=PACK_REGS(
 595                                                                                                    rd->argintregs[iargcnt],
 596                                                                                                    rd->argintregs[iargcnt + 1]);
 597                                                                 else
 598 #endif
 599                                                                 v->vv.regoff = rd->argintregs[iargcnt];
 600                                                                 iargcnt += intregsneeded + 1;
 601                                                         }
 602                                                         else if (rd->savintreguse > intregsneeded) {
 603                                                                 rd->savintreguse -= intregsneeded + 1;
 604                                                                 v->flags = 0;
 605 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 606                                                                 if (intregsneeded)
 607                                                                         v->vv.regoff = PACK_REGS(
 608                                                                             rd->savintregs[rd->savintreguse],
 609                                                                                 rd->savintregs[rd->savintreguse + 1]);
 610                                                                 else
 611 #endif
 612                                                                         v->vv.regoff =rd->savintregs[rd->savintreguse];
 613                                                         }
 614                                                         else {
 615                                                                 v->flags = INMEMORY;
 616 #if defined(ALIGN_LONGS_IN_MEMORY)
 617                                                                 /* Align longs in Memory */
 618                                                                 if ( (memneeded) && (rd->memuse & 1))
 619                                                                         rd->memuse++;
 620 #endif
 621                                                                 v->vv.regoff = rd->memuse;
 622                                                                 rd->memuse += memneeded + 1;
 623                                                         }
 624                                                 }
 625                                                 intalloc = jd->local_map[s * 5 + t];
 626                                         }
 627 #ifdef HAS_ADDRESS_REGISTER_FILE
 628                                 }
 629 #endif
 630                         } /* for (tt=0;...) */
 631
 632                         /* If the current parameter is a 2-word type, the next local slot */
 633                         /* is skipped.                                                    */
 634
 635                         if (p < md->paramcount)
 636                                 if (IS_2_WORD_TYPE(md->paramtypes[p].type))
 637                                         s++;
 638                 }
 639                 return;
 640         }
 641
 642         for (s = 0; s < cd->maxlocals; s++) {
 643                 intalloc = -1; fltalloc = -1;
 644                 for (tt=0; tt<=4; tt++) {
 645                         t = typeloop[tt];
 646
 647                         lm = jd->local_map[s * 5 + t];
 648                         if (lm == UNUSED)
 649                                 continue;
 650
 651                         v = VAR(lm);
 652
 653 #ifdef SUPPORT_COMBINE_INTEGER_REGISTERS
 654                                 intregsneeded = (IS_2_WORD_TYPE(t)) ? 1 : 0;
 655 #endif
 656 #if defined(HAS_4BYTE_STACKSLOT)
 657                                 memneeded = (IS_2_WORD_TYPE(t)) ? 1 : 0;
 658 #endif
 659 #ifdef HAS_ADDRESS_REGISTER_FILE
 660                                 if ( IS_ADR_TYPE(t) ) {
 661                                         if (rd->savadrreguse > 0) {
 662                                                 v->flags = 0;
 663                                                 v->vv.regoff = rd->savadrregs[--rd->savadrreguse];
 664                                         }
 665                                         else {
 666                                                 v->flags = INMEMORY;
 667                                                 v->vv.regoff = rd->memuse++;
 668                                         }
 669                                 } else {
 670 #endif
 671                                 if (IS_FLT_DBL_TYPE(t)) {
 672                                         if (fltalloc >= 0) {
 673                                                 v->flags = VAR(fltalloc)->flags;
 674                                                 v->vv.regoff = VAR(fltalloc)->vv.regoff;
 675                                         }
 676                                         else if (rd->savfltreguse > 0) {
 677                                                 v->flags = 0;
 678                                                 v->vv.regoff = rd->savfltregs[--rd->savfltreguse];
 679                                         }
 680                                         else {
 681                                                 v->flags = INMEMORY;
 682 #if defined(ALIGN_DOUBLES_IN_MEMORY)
 683                                                 /* Align doubles in Memory */
 684                                                 if ( (memneeded) && (rd->memuse & 1))
 685                                                         rd->memuse++;
 686 #endif
 687                                                 v->vv.regoff = rd->memuse;
 688                                                 rd->memuse += memneeded + 1;
 689                                         }
 690                                         fltalloc = jd->local_map[s * 5 + t];
 691                                 }
 692                                 else {
 693 #if defined(HAS_4BYTE_STACKSLOT) && !defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 694                                         /*
 695                                          * for i386 put all longs in memory
 696                                          */
 697                                         if (IS_2_WORD_TYPE(t)) {
 698                                                 v->flags = INMEMORY;
 699 #if defined(ALIGN_LONGS_IN_MEMORY)
 700                                                 /* Align longs in Memory */
 701                                                 if (rd->memuse & 1)
 702                                                         rd->memuse++;
 703 #endif
 704                                                 v->vv.regoff = rd->memuse;
 705                                                 rd->memuse += memneeded + 1;
 706                                         } else {
 707 #endif
 708                                                 if (intalloc >= 0) {
 709                                                         v->flags = VAR(intalloc)->flags;
 710 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 711                                                         if (!(v->flags & INMEMORY)
 712                                                                 && IS_2_WORD_TYPE(VAR(intalloc)->type))
 713                                                                 v->vv.regoff = GET_LOW_REG(
 714                                                                                             VAR(intalloc)->vv.regoff);
 715                                                         else
 716 #endif
 717                                                                 v->vv.regoff = VAR(intalloc)->vv.regoff;
 718                                                 }
 719                                                 else if (rd->savintreguse > intregsneeded) {
 720                                                         rd->savintreguse -= intregsneeded+1;
 721                                                         v->flags = 0;
 722 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 723                                                                 if (intregsneeded)
 724                                                                         v->vv.regoff = PACK_REGS(
 725                                                                                 rd->savintregs[rd->savintreguse],
 726                                                                             rd->savintregs[rd->savintreguse + 1]);
 727                                                                 else
 728 #endif
 729                                                                         v->vv.regoff =rd->savintregs[rd->savintreguse];
 730                                                 }
 731                                                 else {
 732                                                         v->flags = INMEMORY;
 733 #if defined(ALIGN_LONGS_IN_MEMORY)
 734                                                         /* Align longs in Memory */
 735                                                         if ( (memneeded) && (rd->memuse & 1))
 736                                                                 rd->memuse++;
 737 #endif
 738                                                         v->vv.regoff = rd->memuse;
 739                                                         rd->memuse += memneeded + 1;
 740                                                 }
 741 #if defined(HAS_4BYTE_STACKSLOT) && !defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 742                                         }
 743 #endif
 744                                         intalloc = jd->local_map[s * 5 + t];
 745                                 }
 746 #ifdef HAS_ADDRESS_REGISTER_FILE
 747                                 }
 748 #endif
 749
 750                 }
 751         }
 752 }
 753
 754
 755 static void reg_init_temp(jitdata *jd, registerdata *rd)
 756 {
 757         rd->freememtop = 0;
 758 #if defined(HAS_4BYTE_STACKSLOT)
 759         rd->freememtop_2 = 0;
 760 #endif
 761
 762         rd->freetmpinttop = 0;
 763         rd->freesavinttop = 0;
 764         rd->freetmpflttop = 0;
 765         rd->freesavflttop = 0;
 766 #ifdef HAS_ADDRESS_REGISTER_FILE
 767         rd->freetmpadrtop = 0;
 768         rd->freesavadrtop = 0;
 769 #endif
 770
 771         rd->freearginttop = 0;
 772         rd->freeargflttop = 0;
 773 #ifdef HAS_ADDRESS_REGISTER_FILE
 774         rd->freeargadrtop = 0;
 775 #endif
 776
 777         rd->regcopycount = DMNEW(int, INT_REG_CNT + FLT_REG_CNT);
 778         MZERO(rd->regcopycount, int, INT_REG_CNT + FLT_REG_CNT);
 779
 780         /* memcopycount is dynamically allocated when needed */
 781
 782         rd->memcopycount = NULL;
 783         rd->memcopycountsize = 0;
 784 }
 785
 786
 787 #define reg_new_temp(jd,index)                                       \
 788     if ( (index >= jd->localcount)                                   \
 789          && (!(VAR(index)->flags & (INOUT | PREALLOC))) )            \
 790         reg_new_temp_func(jd, index)
 791
 792 static void reg_new_temp_func(jitdata *jd, s4 index)
 793 {
 794         s4 intregsneeded;
 795         s4 memneeded;
 796         s4 tryagain;
 797         registerdata *rd;
 798         varinfo      *v;
 799
 800         rd = jd->rd;
 801         v = VAR(index);
 802
 803         /* Try to allocate a saved register if there is no temporary one          */
 804         /* available. This is what happens during the second run.                 */
 805         tryagain = (v->flags & SAVEDVAR) ? 1 : 2;
 806
 807 #ifdef SUPPORT_COMBINE_INTEGER_REGISTERS
 808         intregsneeded = (IS_2_WORD_TYPE(v->type)) ? 1 : 0;
 809 #else
 810         intregsneeded = 0;
 811 #endif
 812 #if defined(HAS_4BYTE_STACKSLOT)
 813         memneeded = (IS_2_WORD_TYPE(v->type)) ? 1 : 0;
 814 #else
 815         memneeded = 0;
 816 #endif
 817
 818         for(; tryagain; --tryagain) {
 819                 if (tryagain == 1) {
 820                         if (!(v->flags & SAVEDVAR))
 821                                 v->flags |= SAVEDTMP;
 822 #ifdef HAS_ADDRESS_REGISTER_FILE
 823                         if (IS_ADR_TYPE(v->type)) {
 824                                 if (rd->freesavadrtop > 0) {
 825                                         v->vv.regoff = rd->freesavadrregs[--rd->freesavadrtop];
 826                                         return;
 827                                 } else if (rd->savadrreguse > 0) {
 828                                         v->vv.regoff = rd->savadrregs[--rd->savadrreguse];
 829                                         return;
 830                                 }
 831                         } else
 832 #endif
 833                         {
 834                                 if (IS_FLT_DBL_TYPE(v->type)) {
 835                                         if (rd->freesavflttop > 0) {
 836                                                 v->vv.regoff = rd->freesavfltregs[--rd->freesavflttop];
 837                                                 return;
 838                                         } else if (rd->savfltreguse > 0) {
 839                                                 v->vv.regoff = rd->savfltregs[--rd->savfltreguse];
 840                                                 return;
 841                                         }
 842                                 } else {
 843 #if defined(HAS_4BYTE_STACKSLOT) && !defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 844                                         /*
 845                                          * for i386 put all longs in memory
 846                                          */
 847                                         if (!IS_2_WORD_TYPE(v->type))
 848 #endif
 849                                         {
 850                                                 if (rd->freesavinttop > intregsneeded) {
 851                                                         rd->freesavinttop -= intregsneeded + 1;
 852 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 853                                                         if (intregsneeded)
 854                                                                 v->vv.regoff = PACK_REGS(
 855                                                                 rd->freesavintregs[rd->freesavinttop],
 856                                                                         rd->freesavintregs[rd->freesavinttop + 1]);
 857                                                 else
 858 #endif
 859                                                                 v->vv.regoff =
 860                                                                         rd->freesavintregs[rd->freesavinttop];
 861                                                         return;
 862                                                 } else if (rd->savintreguse > intregsneeded) {
 863                                                         rd->savintreguse -= intregsneeded + 1;
 864 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 865                                                         if (intregsneeded)
 866                                                                 v->vv.regoff = PACK_REGS(
 867                                                                         rd->savintregs[rd->savintreguse],
 868                                                                 rd->savintregs[rd->savintreguse + 1]);
 869                                                         else
 870 #endif
 871                                                                 v->vv.regoff = rd->savintregs[rd->savintreguse];
 872                                                         return;
 873                                                 }
 874                                         }
 875                                 }
 876                         }
 877                 } else { /* tryagain == 2 */
 878 #ifdef HAS_ADDRESS_REGISTER_FILE
 879                         if (IS_ADR_TYPE(v->type)) {
 880                                 if (rd->freetmpadrtop > 0) {
 881                                         v->vv.regoff = rd->freetmpadrregs[--rd->freetmpadrtop];
 882                                         return;
 883                                 } else if (rd->tmpadrreguse > 0) {
 884                                         v->vv.regoff = rd->tmpadrregs[--rd->tmpadrreguse];
 885                                         return;
 886                                 }
 887                         } else
 888 #endif
 889                         {
 890                                 if (IS_FLT_DBL_TYPE(v->type)) {
 891                                         if (rd->freeargflttop > 0) {
 892                                                 v->vv.regoff = rd->freeargfltregs[--rd->freeargflttop];
 893                                                 v->flags |= TMPARG;
 894                                                 return;
 895                                         } else if (rd->argfltreguse < FLT_ARG_CNT) {
 896                                                 v->vv.regoff = rd->argfltregs[rd->argfltreguse++];
 897                                                 v->flags |= TMPARG;
 898                                                 return;
 899                                         } else if (rd->freetmpflttop > 0) {
 900                                                 v->vv.regoff = rd->freetmpfltregs[--rd->freetmpflttop];
 901                                                 return;
 902                                         } else if (rd->tmpfltreguse > 0) {
 903                                                 v->vv.regoff = rd->tmpfltregs[--rd->tmpfltreguse];
 904                                                 return;
 905                                         }
 906
 907                                 } else {
 908 #if defined(HAS_4BYTE_STACKSLOT) && !defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 909                                         /*
 910                                          * for i386 put all longs in memory
 911                                          */
 912                                         if (!IS_2_WORD_TYPE(v->type))
 913 #endif
 914                                         {
 915                                                 if (rd->freearginttop > intregsneeded) {
 916                                                         rd->freearginttop -= intregsneeded + 1;
 917                                                         v->flags |= TMPARG;
 918 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 919                                                         if (intregsneeded)
 920                                                                 v->vv.regoff = PACK_REGS(
 921                                                                         rd->freeargintregs[rd->freearginttop],
 922                                                                 rd->freeargintregs[rd->freearginttop + 1]);
 923                                                         else
 924 #endif
 925                                                                 v->vv.regoff =
 926                                                                         rd->freeargintregs[rd->freearginttop];
 927                                                         return;
 928                                                 } else if (rd->argintreguse
 929                                                                    < INT_ARG_CNT - intregsneeded) {
 930 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 931                                                         if (intregsneeded)
 932                                                                 v->vv.regoff = PACK_REGS(
 933                                                                         rd->argintregs[rd->argintreguse],
 934                                                                     rd->argintregs[rd->argintreguse + 1]);
 935                                                         else
 936 #endif
 937                                                                 v->vv.regoff = rd->argintregs[rd->argintreguse];
 938                                                         v->flags |= TMPARG;
 939                                                         rd->argintreguse += intregsneeded + 1;
 940                                                         return;
 941                                                 } else if (rd->freetmpinttop > intregsneeded) {
 942                                                         rd->freetmpinttop -= intregsneeded + 1;
 943 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 944                                                         if (intregsneeded)
 945                                                                 v->vv.regoff = PACK_REGS(
 946                                                                         rd->freetmpintregs[rd->freetmpinttop],
 947                                                                     rd->freetmpintregs[rd->freetmpinttop + 1]);
 948                                                         else
 949 #endif
 950                                                                 v->vv.regoff = rd->freetmpintregs[rd->freetmpinttop];
 951                                                         return;
 952                                                 } else if (rd->tmpintreguse > intregsneeded) {
 953                                                         rd->tmpintreguse -= intregsneeded + 1;
 954 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
 955                                                         if (intregsneeded)
 956                                                                 v->vv.regoff = PACK_REGS(
 957                                                                         rd->tmpintregs[rd->tmpintreguse],
 958                                                                     rd->tmpintregs[rd->tmpintreguse + 1]);
 959                                                         else
 960 #endif
 961                                                                 v->vv.regoff = rd->tmpintregs[rd->tmpintreguse];
 962                                                         return;
 963                                                 }
 964                                         } /* if (!IS_2_WORD_TYPE(s->type)) */
 965                                 } /* if (IS_FLT_DBL_TYPE(s->type)) */
 966                         } /* if (IS_ADR_TYPE(s->type)) */
 967                 } /* if (tryagain == 1) else */
 968         } /* for(; tryagain; --tryagain) */
 969
 970 #if defined(HAS_4BYTE_STACKSLOT)
 971         if ((memneeded == 1) && (rd->freememtop_2 > 0)) {
 972                 rd->freememtop_2--;
 973                 v->vv.regoff = rd->freemem_2[rd->freememtop_2];
 974         } else
 975 #endif /*defined(HAS_4BYTE_STACKSLOT) */
 976                 if ((memneeded == 0) && (rd->freememtop > 0)) {
 977                         rd->freememtop--;;
 978                         v->vv.regoff = rd->freemem[rd->freememtop];
 979                 } else {
 980 #if defined(ALIGN_LONGS_IN_MEMORY) || defined(ALIGN_DOUBLES_IN_MEMORY)
 981                         /* align 2 Word Types */
 982                         if ((memneeded) && ((rd->memuse & 1) == 1)) {
 983                                 /* Put patched memory slot on freemem */
 984                                 rd->freemem[rd->freememtop++] = rd->memuse;
 985                                 rd->memuse++;
 986                         }
 987 #endif /* defined(ALIGN_LONGS_IN_MEMORY) || defined(ALIGN_DOUBLES_IN_MEMORY) */
 988                         v->vv.regoff = rd->memuse;
 989                         rd->memuse += memneeded + 1;
 990                 }
 991         v->flags |= INMEMORY;
 992 }
 993
 994
 995 #define reg_free_temp(jd,index)                                      \
 996     if ((index > jd->localcount)                                     \
 997         && (!(VAR(index)->flags & (INOUT | PREALLOC))))              \
 998         reg_free_temp_func(jd, index)
 999
1000 /* Do not free regs/memory locations used by Stackslots flagged STCOPY! There is still another Stackslot */
1001 /* alive using this reg/memory location */
1002
1003 static void reg_free_temp_func(jitdata *jd, s4 index)
1004 {
1005         s4 intregsneeded;
1006         s4 memneeded;
1007         registerdata *rd;
1008         varinfo *v;
1009
1010         rd = jd->rd;
1011         v = VAR(index);
1012
1013         /* if this is a copy of another variable, just decrement the copy counter */
1014
1015         /* XXX split reg/mem variables on arm may need special handling here */
1016
1017         if (v->flags & INMEMORY) {
1018                 if (v->vv.regoff < rd->memcopycountsize && rd->memcopycount[v->vv.regoff]) {
1019                         rd->memcopycount[v->vv.regoff]--;
1020                         return;
1021                 }
1022         }
1023         else {
1024 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
1025                 if (rd->regcopycount[GET_LOW_REG(v->vv.regoff)]) {
1026                         rd->regcopycount[GET_LOW_REG(v->vv.regoff)]--;
1027                         return;
1028                 }
1029 #else
1030                 if (rd->regcopycount[v->vv.regoff]) {
1031                         rd->regcopycount[v->vv.regoff]--;
1032                         return;
1033                 }
1034 #endif
1035         }
1036
1037 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
1038         intregsneeded = (IS_2_WORD_TYPE(v->type)) ? 1 : 0;
1039 #else
1040         intregsneeded = 0;
1041 #endif
1042
1043 #if defined(HAS_4BYTE_STACKSLOT)
1044         memneeded = (IS_2_WORD_TYPE(v->type)) ? 1 : 0;
1045 #else
1046         memneeded = 0;
1047 #endif
1048
1049         if (v->flags & INMEMORY) {
1050 #if defined(HAS_4BYTE_STACKSLOT)
1051                 if (memneeded > 0) {
1052                         rd->freemem_2[rd->freememtop_2] = v->vv.regoff;
1053                         rd->freememtop_2++;
1054                 } else
1055 #endif
1056                 {
1057                         rd->freemem[rd->freememtop] = v->vv.regoff;
1058                         rd->freememtop++;
1059                 }
1060
1061 #ifdef HAS_ADDRESS_REGISTER_FILE
1062         } else if (IS_ADR_TYPE(v->type)) {
1063                 if (v->flags & (SAVEDVAR | SAVEDTMP)) {
1064 /*                      v->flags &= ~SAVEDTMP; */
1065                         rd->freesavadrregs[rd->freesavadrtop++] = v->vv.regoff;
1066                 } else
1067                         rd->freetmpadrregs[rd->freetmpadrtop++] = v->vv.regoff;
1068 #endif
1069         } else if (IS_FLT_DBL_TYPE(v->type)) {
1070                 if (v->flags & (SAVEDVAR | SAVEDTMP)) {
1071 /*                      v->flags &= ~SAVEDTMP; */
1072                         rd->freesavfltregs[rd->freesavflttop++] = v->vv.regoff;
1073                 } else if (v->flags & TMPARG) {
1074 /*                      v->flags &= ~TMPARG; */
1075                         rd->freeargfltregs[rd->freeargflttop++] = v->vv.regoff;
1076                 } else
1077                         rd->freetmpfltregs[rd->freetmpflttop++] = v->vv.regoff;
1078         } else { /* IS_INT_LNG_TYPE */
1079                 if (v->flags & (SAVEDVAR | SAVEDTMP)) {
1080 /*                      v->flags &= ~SAVEDTMP; */
1081 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
1082                         if (intregsneeded) {
1083                                 rd->freesavintregs[rd->freesavinttop] =
1084                                         GET_LOW_REG(v->vv.regoff);
1085                                 rd->freesavintregs[rd->freesavinttop + 1] =
1086                                         GET_HIGH_REG(v->vv.regoff);
1087                         } else
1088 #endif
1089                         rd->freesavintregs[rd->freesavinttop] = v->vv.regoff;
1090                         rd->freesavinttop += intregsneeded + 1;
1091
1092                 } else if (v->flags & TMPARG) {
1093 /*                      s->flags &= ~TMPARG; */
1094 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
1095                         if (intregsneeded) {
1096                                 rd->freeargintregs[rd->freearginttop] =
1097                                         GET_LOW_REG(v->vv.regoff);
1098                                 rd->freeargintregs[rd->freearginttop + 1] =
1099                                         GET_HIGH_REG(v->vv.regoff);
1100                         } else
1101 #endif
1102                         rd->freeargintregs[rd->freearginttop] = v->vv.regoff;
1103                         rd->freearginttop += intregsneeded + 1;
1104                 } else {
1105 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
1106                         if (intregsneeded) {
1107                                 rd->freetmpintregs[rd->freetmpinttop] =
1108                                         GET_LOW_REG(v->vv.regoff);
1109                                 rd->freetmpintregs[rd->freetmpinttop + 1] =
1110                                         GET_HIGH_REG(v->vv.regoff);
1111                         } else
1112 #endif
1113                     rd->freetmpintregs[rd->freetmpinttop] = v->vv.regoff;
1114                         rd->freetmpinttop += intregsneeded + 1;
1115                 }
1116         }
1117 }
1118
1119
1120 static bool reg_alloc_dup(jitdata *jd, s4 srcindex, s4 dstindex)
1121 {
1122         varinfo *sv;
1123         varinfo *dv;
1124
1125         /* do not coalesce local variables here */
1126
1127         if (srcindex <= jd->localcount || dstindex <= jd->localcount)
1128                 return false;
1129
1130         sv = VAR(srcindex);
1131         dv = VAR(dstindex);
1132
1133         /* do not coalesce in/out vars or preallocated variables here */
1134
1135         if ((sv->flags | dv->flags) & (INOUT | PREALLOC))
1136                 return false;
1137
1138         /* if the source is in memory, we can coalesce in any case */
1139
1140         if (sv->flags & INMEMORY) {
1141                 dv->flags |= INMEMORY;
1142                 dv->vv.regoff = sv->vv.regoff;
1143                 return true;
1144         }
1145
1146         /* we do not allocate a REG_TMP to a REG_SAV variable */
1147
1148         if ((sv->flags & SAVEDVAR) != (dv->flags & SAVEDVAR))
1149                 return false;
1150
1151         /* coalesce */
1152         dv->vv.regoff = sv->vv.regoff;
1153         dv->flags |= sv->flags & (SAVEDTMP | TMPARG);
1154
1155         return true;
1156 }
1157
1158
1159 /* allocate_scratch_registers **************************************************
1160
1161    Allocate temporary (non-interface, non-local) registers.
1162
1163 *******************************************************************************/
1164
1165 static void new_allocate_scratch_registers(jitdata *jd)
1166 {
1167         methodinfo         *m;
1168         registerdata       *rd;
1169         s4                  i;
1170         s4                  len;
1171         instruction        *iptr;
1172         basicblock         *bptr;
1173         builtintable_entry *bte;
1174         methoddesc         *md;
1175         s4                 *argp;
1176         varinfo            *v;
1177
1178         /* get required compiler data */
1179
1180         m  = jd->m;
1181         rd = jd->rd;
1182
1183         /* initialize temp registers */
1184
1185         reg_init_temp(jd, rd);
1186
1187         bptr = jd->new_basicblocks;
1188
1189         while (bptr != NULL) {
1190                 if (bptr->flags >= BBREACHED) {
1191
1192                         /* set allocation of invars */
1193
1194                         for (i=0; i<bptr->indepth; ++i)
1195                         {
1196                                 v = VAR(bptr->invars[i]);
1197
1198                                 v->vv.regoff = jd->interface_map[5*i + v->type].regoff;
1199                                 v->flags  = jd->interface_map[5*i + v->type].flags;
1200                         }
1201
1202                         /* set allocation of outvars */
1203
1204                         for (i=0; i<bptr->outdepth; ++i)
1205                         {
1206                                 v = VAR(bptr->outvars[i]);
1207
1208                                 v->vv.regoff = jd->interface_map[5*i + v->type].regoff;
1209                                 v->flags  = jd->interface_map[5*i + v->type].flags;
1210                         }
1211
1212                         /* iterate over ICMDS to allocate temporary variables */
1213
1214                         iptr = bptr->iinstr;
1215                         len = bptr->icount;
1216
1217                         while (--len >= 0)  {
1218                                 switch (iptr->opc) {
1219
1220                                         /* pop 0 push 0 */
1221
1222                                 case ICMD_JSR:
1223 #if !defined(NDEBUG)
1224                                         /* avoid problems with show_allocation */
1225                                         VAROP(iptr->dst)->vv.regoff = 0;
1226 #endif
1227                                 case ICMD_NOP:
1228                                 case ICMD_CHECKNULL:
1229                                 case ICMD_IINC:
1230                                 case ICMD_RET:
1231                                 case ICMD_RETURN:
1232                                 case ICMD_GOTO:
1233                                 case ICMD_PUTSTATICCONST:
1234                                 case ICMD_INLINE_START:
1235                                 case ICMD_INLINE_END:
1236                                 case ICMD_INLINE_GOTO:
1237                                         break;
1238
1239                                         /* pop 0 push 1 const */
1240
1241                                 case ICMD_ICONST:
1242                                 case ICMD_LCONST:
1243                                 case ICMD_FCONST:
1244                                 case ICMD_DCONST:
1245                                 case ICMD_ACONST:
1246
1247                                         /* pop 0 push 1 load */
1248
1249                                 case ICMD_ILOAD:
1250                                 case ICMD_LLOAD:
1251                                 case ICMD_FLOAD:
1252                                 case ICMD_DLOAD:
1253                                 case ICMD_ALOAD:
1254                                         reg_new_temp(jd, iptr->dst.varindex);
1255                                         break;
1256
1257                                         /* pop 2 push 1 */
1258
1259                                 case ICMD_IALOAD:
1260                                 case ICMD_LALOAD:
1261                                 case ICMD_FALOAD:
1262                                 case ICMD_DALOAD:
1263                                 case ICMD_AALOAD:
1264
1265                                 case ICMD_BALOAD:
1266                                 case ICMD_CALOAD:
1267                                 case ICMD_SALOAD:
1268                                         reg_free_temp(jd, iptr->sx.s23.s2.varindex);
1269                                         reg_free_temp(jd, iptr->s1.varindex);
1270                                         reg_new_temp(jd, iptr->dst.varindex);
1271                                         break;
1272
1273                                         /* pop 3 push 0 */
1274
1275                                 case ICMD_IASTORE:
1276                                 case ICMD_LASTORE:
1277                                 case ICMD_FASTORE:
1278                                 case ICMD_DASTORE:
1279                                 case ICMD_AASTORE:
1280
1281                                 case ICMD_BASTORE:
1282                                 case ICMD_CASTORE:
1283                                 case ICMD_SASTORE:
1284                                         reg_free_temp(jd, iptr->sx.s23.s3.varindex);
1285                                         reg_free_temp(jd, iptr->sx.s23.s2.varindex);
1286                                         reg_free_temp(jd, iptr->s1.varindex);
1287                                         break;
1288
1289                                         /* pop 1 push 0 store */
1290
1291                                 case ICMD_ISTORE:
1292                                 case ICMD_LSTORE:
1293                                 case ICMD_FSTORE:
1294                                 case ICMD_DSTORE:
1295                                 case ICMD_ASTORE:
1296
1297                                         /* pop 1 push 0 */
1298
1299                                 case ICMD_POP:
1300
1301                                 case ICMD_IRETURN:
1302                                 case ICMD_LRETURN:
1303                                 case ICMD_FRETURN:
1304                                 case ICMD_DRETURN:
1305                                 case ICMD_ARETURN:
1306
1307                                 case ICMD_ATHROW:
1308
1309                                 case ICMD_PUTSTATIC:
1310                                 case ICMD_PUTFIELDCONST:
1311
1312                                         /* pop 1 push 0 branch */
1313
1314                                 case ICMD_IFNULL:
1315                                 case ICMD_IFNONNULL:
1316
1317                                 case ICMD_IFEQ:
1318                                 case ICMD_IFNE:
1319                                 case ICMD_IFLT:
1320                                 case ICMD_IFGE:
1321                                 case ICMD_IFGT:
1322                                 case ICMD_IFLE:
1323
1324                                 case ICMD_IF_LEQ:
1325                                 case ICMD_IF_LNE:
1326                                 case ICMD_IF_LLT:
1327                                 case ICMD_IF_LGE:
1328                                 case ICMD_IF_LGT:
1329                                 case ICMD_IF_LLE:
1330
1331                                         /* pop 1 push 0 table branch */
1332
1333                                 case ICMD_TABLESWITCH:
1334                                 case ICMD_LOOKUPSWITCH:
1335
1336                                 case ICMD_MONITORENTER:
1337                                 case ICMD_MONITOREXIT:
1338                                         reg_free_temp(jd, iptr->s1.varindex);
1339                                         break;
1340
1341                                         /* pop 2 push 0 branch */
1342
1343                                 case ICMD_IF_ICMPEQ:
1344                                 case ICMD_IF_ICMPNE:
1345                                 case ICMD_IF_ICMPLT:
1346                                 case ICMD_IF_ICMPGE:
1347                                 case ICMD_IF_ICMPGT:
1348                                 case ICMD_IF_ICMPLE:
1349
1350                                 case ICMD_IF_LCMPEQ:
1351                                 case ICMD_IF_LCMPNE:
1352                                 case ICMD_IF_LCMPLT:
1353                                 case ICMD_IF_LCMPGE:
1354                                 case ICMD_IF_LCMPGT:
1355                                 case ICMD_IF_LCMPLE:
1356
1357                                 case ICMD_IF_FCMPEQ:
1358                                 case ICMD_IF_FCMPNE:
1359
1360                                 case ICMD_IF_FCMPL_LT:
1361                                 case ICMD_IF_FCMPL_GE:
1362                                 case ICMD_IF_FCMPL_GT:
1363                                 case ICMD_IF_FCMPL_LE:
1364
1365                                 case ICMD_IF_FCMPG_LT:
1366                                 case ICMD_IF_FCMPG_GE:
1367                                 case ICMD_IF_FCMPG_GT:
1368                                 case ICMD_IF_FCMPG_LE:
1369
1370                                 case ICMD_IF_DCMPEQ:
1371                                 case ICMD_IF_DCMPNE:
1372
1373                                 case ICMD_IF_DCMPL_LT:
1374                                 case ICMD_IF_DCMPL_GE:
1375                                 case ICMD_IF_DCMPL_GT:
1376                                 case ICMD_IF_DCMPL_LE:
1377
1378                                 case ICMD_IF_DCMPG_LT:
1379                                 case ICMD_IF_DCMPG_GE:
1380                                 case ICMD_IF_DCMPG_GT:
1381                                 case ICMD_IF_DCMPG_LE:
1382
1383                                 case ICMD_IF_ACMPEQ:
1384                                 case ICMD_IF_ACMPNE:
1385
1386                                         /* pop 2 push 0 */
1387
1388                                 case ICMD_POP2:
1389
1390                                 case ICMD_PUTFIELD:
1391
1392                                 case ICMD_IASTORECONST:
1393                                 case ICMD_LASTORECONST:
1394                                 case ICMD_AASTORECONST:
1395                                 case ICMD_BASTORECONST:
1396                                 case ICMD_CASTORECONST:
1397                                 case ICMD_SASTORECONST:
1398                                         reg_free_temp(jd, iptr->sx.s23.s2.varindex);
1399                                         reg_free_temp(jd, iptr->s1.varindex);
1400                                         break;
1401
1402                                         /* pop 0 push 1 copy */
1403
1404                                 case ICMD_COPY:
1405                                         /* src === dst->prev (identical Stackslot Element)     */
1406                                         /* src --> dst       (copied value, take same reg/mem) */
1407
1408                                         if (!reg_alloc_dup(jd, iptr->s1.varindex, iptr->dst.varindex)) {
1409                                                 reg_new_temp(jd, iptr->dst.varindex);
1410                                         } else {
1411                                                 v = VAROP(iptr->dst);
1412
1413                                                 if (v->flags & INMEMORY) {
1414                                                         if (v->vv.regoff >= rd->memcopycountsize) {
1415                                                                 int newsize = (v->vv.regoff + 1) * 2;
1416                                                                 i = rd->memcopycountsize;
1417                                                                 rd->memcopycount = DMREALLOC(rd->memcopycount, int, i, newsize);
1418                                                                 MZERO(rd->memcopycount + i, int, newsize - i);
1419                                                                 rd->memcopycountsize = newsize;
1420                                                         }
1421                                                         rd->memcopycount[v->vv.regoff]++;
1422                                                 }
1423                                                 else {
1424                                                         /* XXX split reg/mem variables on arm may need special handling here */
1425
1426 #if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
1427                                                         rd->regcopycount[GET_LOW_REG(v->vv.regoff)]++;
1428 #else
1429                                                         rd->regcopycount[v->vv.regoff]++;
1430 #endif
1431                                                 }
1432                                         }
1433                                         break;
1434
1435                                         /* pop 1 push 1 move */
1436
1437                                 case ICMD_MOVE:
1438                                         if (!reg_alloc_dup(jd, iptr->s1.varindex, iptr->dst.varindex)) {
1439                                                 reg_new_temp(jd, iptr->dst.varindex);
1440                                                 reg_free_temp(jd, iptr->s1.varindex);
1441                                         }
1442                                         break;
1443
1444                                         /* pop 2 push 1 */
1445
1446                                 case ICMD_IADD:
1447                                 case ICMD_ISUB:
1448                                 case ICMD_IMUL:
1449                                 case ICMD_IDIV:
1450                                 case ICMD_IREM:
1451
1452                                 case ICMD_ISHL:
1453                                 case ICMD_ISHR:
1454                                 case ICMD_IUSHR:
1455                                 case ICMD_IAND:
1456                                 case ICMD_IOR:
1457                                 case ICMD_IXOR:
1458
1459                                 case ICMD_LADD:
1460                                 case ICMD_LSUB:
1461                                 case ICMD_LMUL:
1462                                 case ICMD_LDIV:
1463                                 case ICMD_LREM:
1464
1465                                 case ICMD_LOR:
1466                                 case ICMD_LAND:
1467                                 case ICMD_LXOR:
1468
1469                                 case ICMD_LSHL:
1470                                 case ICMD_LSHR:
1471                                 case ICMD_LUSHR:
1472
1473                                 case ICMD_FADD:
1474                                 case ICMD_FSUB:
1475                                 case ICMD_FMUL:
1476                                 case ICMD_FDIV:
1477                                 case ICMD_FREM:
1478
1479                                 case ICMD_DADD:
1480                                 case ICMD_DSUB:
1481                                 case ICMD_DMUL:
1482                                 case ICMD_DDIV:
1483                                 case ICMD_DREM:
1484
1485                                 case ICMD_LCMP:
1486                                 case ICMD_FCMPL:
1487                                 case ICMD_FCMPG:
1488                                 case ICMD_DCMPL:
1489                                 case ICMD_DCMPG:
1490                                         reg_free_temp(jd, iptr->sx.s23.s2.varindex);
1491                                         reg_free_temp(jd, iptr->s1.varindex);
1492                                         reg_new_temp(jd, iptr->dst.varindex);
1493                                         break;
1494
1495                                         /* pop 1 push 1 */
1496
1497                                 case ICMD_IADDCONST:
1498                                 case ICMD_ISUBCONST:
1499                                 case ICMD_IMULCONST:
1500                                 case ICMD_IMULPOW2:
1501                                 case ICMD_IDIVPOW2:
1502                                 case ICMD_IREMPOW2:
1503                                 case ICMD_IANDCONST:
1504                                 case ICMD_IORCONST:
1505                                 case ICMD_IXORCONST:
1506                                 case ICMD_ISHLCONST:
1507                                 case ICMD_ISHRCONST:
1508                                 case ICMD_IUSHRCONST:
1509
1510                                 case ICMD_LADDCONST:
1511                                 case ICMD_LSUBCONST:
1512                                 case ICMD_LMULCONST:
1513                                 case ICMD_LMULPOW2:
1514                                 case ICMD_LDIVPOW2:
1515                                 case ICMD_LREMPOW2:
1516                                 case ICMD_LANDCONST:
1517                                 case ICMD_LORCONST:
1518                                 case ICMD_LXORCONST:
1519                                 case ICMD_LSHLCONST:
1520                                 case ICMD_LSHRCONST:
1521                                 case ICMD_LUSHRCONST:
1522
1523                                 case ICMD_INEG:
1524                                 case ICMD_INT2BYTE:
1525                                 case ICMD_INT2CHAR:
1526                                 case ICMD_INT2SHORT:
1527                                 case ICMD_LNEG:
1528                                 case ICMD_FNEG:
1529                                 case ICMD_DNEG:
1530
1531                                 case ICMD_I2L:
1532                                 case ICMD_I2F:
1533                                 case ICMD_I2D:
1534                                 case ICMD_L2I:
1535                                 case ICMD_L2F:
1536                                 case ICMD_L2D:
1537                                 case ICMD_F2I:
1538                                 case ICMD_F2L:
1539                                 case ICMD_F2D:
1540                                 case ICMD_D2I:
1541                                 case ICMD_D2L:
1542                                 case ICMD_D2F:
1543
1544                                 case ICMD_CHECKCAST:
1545
1546                                 case ICMD_ARRAYLENGTH:
1547                                 case ICMD_INSTANCEOF:
1548
1549                                 case ICMD_NEWARRAY:
1550                                 case ICMD_ANEWARRAY:
1551
1552                                 case ICMD_GETFIELD:
1553                                         reg_free_temp(jd, iptr->s1.varindex);
1554                                         reg_new_temp(jd, iptr->dst.varindex);
1555                                         break;
1556
1557                                         /* pop 0 push 1 */
1558
1559                                 case ICMD_GETSTATIC:
1560
1561                                 case ICMD_NEW:
1562                                         reg_new_temp(jd, iptr->dst.varindex);
1563                                         break;
1564
1565                                         /* pop many push any */
1566
1567                                 case ICMD_INVOKESTATIC:
1568                                 case ICMD_INVOKESPECIAL:
1569                                 case ICMD_INVOKEVIRTUAL:
1570                                 case ICMD_INVOKEINTERFACE:
1571                                         INSTRUCTION_GET_METHODDESC(iptr,md);
1572                                         i = md->paramcount;
1573                                         argp = iptr->sx.s23.s2.args;
1574                                         while (--i >= 0) {
1575                                                 reg_free_temp(jd, *argp);
1576                                                 argp++;
1577                                         }
1578                                         if (md->returntype.type != TYPE_VOID)
1579                                                 reg_new_temp(jd, iptr->dst.varindex);
1580                                         break;
1581
1582                                 case ICMD_BUILTIN:
1583                                         bte = iptr->sx.s23.s3.bte;
1584                                         md = bte->md;
1585                                         i = md->paramcount;
1586                                         argp = iptr->sx.s23.s2.args;
1587                                         while (--i >= 0) {
1588                                                 reg_free_temp(jd, *argp);
1589                                                 argp++;
1590                                         }
1591                                         if (md->returntype.type != TYPE_VOID)
1592                                                 reg_new_temp(jd, iptr->dst.varindex);
1593                                         break;
1594
1595                                 case ICMD_MULTIANEWARRAY:
1596                                         i = iptr->s1.argcount;
1597                                         argp = iptr->sx.s23.s2.args;
1598                                         while (--i >= 0) {
1599                                                 reg_free_temp(jd, *argp);
1600                                                 argp++;
1601                                         }
1602                                         reg_new_temp(jd, iptr->dst.varindex);
1603                                         break;
1604
1605                                 default:
1606                                         *exceptionptr =
1607                                                 new_internalerror("Unknown ICMD %d during register allocation",
1608                                                                                   iptr->opc);
1609                                         return;
1610                                 } /* switch */
1611                                 iptr++;
1612                         } /* while instructions */
1613                 } /* if */
1614                 bptr = bptr->next;
1615         } /* while blocks */
1616 }
1617
1618
1619 #if defined(ENABLE_STATISTICS)
1620 void reg_make_statistics(jitdata *jd)
1621 {
1622         methodinfo   *m;
1623         codegendata  *cd;
1624         registerdata *rd;
1625         int i,type;
1626         s4 len;
1627         stackptr    src, src_old;
1628         stackptr    dst;
1629         instruction *iptr;
1630         basicblock  *bptr;
1631         int size_interface; /* == maximum size of in/out stack at basic block boundaries */
1632         bool in_register;
1633
1634         /* get required compiler data */
1635
1636         m  = jd->m;
1637         cd = jd->cd;
1638         rd = jd->rd;
1639
1640         in_register = true;
1641
1642         size_interface = 0;
1643
1644                 /* count how many local variables are held in memory or register */
1645                 for(i=0; i < cd->maxlocals; i++)
1646                         for (type=0; type <=4; type++)
1647                                 if (rd->locals[i][type].type != -1) { /* valid local */
1648                                         if (rd->locals[i][type].flags & INMEMORY) {
1649                                                 count_locals_spilled++;
1650                                                 in_register=false;
1651                                         }
1652                                         else
1653                                                 count_locals_register++;
1654                                 }
1655
1656                 /* count how many stack slots are held in memory or register */
1657
1658                 bptr = jd->new_basicblocks;
1659
1660                 while (bptr != NULL) {
1661                         if (bptr->flags >= BBREACHED) {
1662
1663 #if defined(ENABLE_LSRA) || defined(ENABLE_SSA)
1664                         if (!opt_lsra) {
1665 #endif
1666                                 /* check for memory moves from interface to BB instack */
1667                                 dst = bptr->instack;
1668                                 len = bptr->indepth;
1669
1670                                 if (len > size_interface) size_interface = len;
1671
1672                                 while (dst != NULL) {
1673                                         len--;
1674                                         if (dst->varkind != STACKVAR) {
1675                                                 if ( (dst->flags & INMEMORY) ||
1676                                                          (rd->interfaces[len][dst->type].flags & INMEMORY) ||
1677                                                          ( (dst->flags & INMEMORY) &&
1678                                                            (rd->interfaces[len][dst->type].flags & INMEMORY) &&
1679                                                            (dst->vv.regoff != rd->interfaces[len][dst->type].regoff) ))
1680                                                 {
1681                                                         /* one in memory or both inmemory at different offsets */
1682                                                         count_mem_move_bb++;
1683                                                         in_register=false;
1684                                                 }
1685                                         }
1686
1687                                         dst = dst->prev;
1688                                 }
1689
1690                                 /* check for memory moves from BB outstack to interface */
1691                                 dst = bptr->outstack;
1692                                 len = bptr->outdepth;
1693                                 if (len > size_interface) size_interface = len;
1694
1695                                 while (dst) {
1696                                         len--;
1697                                         if (dst->varkind != STACKVAR) {
1698                                                 if ( (dst->flags & INMEMORY) || \
1699                                                          (rd->interfaces[len][dst->type].flags & INMEMORY) || \
1700                                                          ( (dst->flags & INMEMORY) && \
1701                                                            (rd->interfaces[len][dst->type].flags & INMEMORY) && \
1702                                                            (dst->vv.regoff != rd->interfaces[len][dst->type].regoff) ))
1703                                                 {
1704                                                         /* one in memory or both inmemory at different offsets */
1705                                                         count_mem_move_bb++;
1706                                                         in_register=false;
1707                                                 }
1708                                         }
1709
1710                                         dst = dst->prev;
1711                                 }
1712 #if defined(ENABLE_LSRA) || defined(ENABLE_SSA)
1713                         }
1714 #endif
1715
1716
1717                                 dst = bptr->instack;
1718                                 iptr = bptr->iinstr;
1719                                 len = bptr->icount;
1720                                 src_old = NULL;
1721
1722                                 while (--len >= 0)  {
1723                                         src = dst;
1724                                         dst = iptr->dst.var;
1725
1726                                         if ((src!= NULL) && (src != src_old)) { /* new stackslot */
1727                                                 switch (src->varkind) {
1728                                                 case TEMPVAR:
1729                                                 case STACKVAR:
1730                                                         if (!(src->flags & INMEMORY))
1731                                                                 count_ss_register++;
1732                                                         else {
1733                                                                 count_ss_spilled++;
1734                                                                 in_register=false;
1735                                                         }
1736                                                         break;
1737                                                         /*                                      case LOCALVAR: */
1738                                                         /*                                              if (!(rd->locals[src->varnum][src->type].flags & INMEMORY)) */
1739                                                         /*                                                      count_ss_register++; */
1740                                                         /*                                              else */
1741                                                         /*                                                      count_ss_spilled++; */
1742                                                         /*                                              break; */
1743                                                 case ARGVAR:
1744                                                         if (!(src->flags & INMEMORY))
1745                                                                 count_argument_mem_ss++;
1746                                                         else
1747                                                                 count_argument_reg_ss++;
1748                                                         break;
1749
1750
1751                                                         /*                                              if (IS_FLT_DBL_TYPE(src->type)) { */
1752                                                         /*                                                      if (src->varnum < FLT_ARG_CNT) { */
1753                                                         /*                                                              count_ss_register++; */
1754                                                         /*                                                              break; */
1755                                                         /*                                                      } */
1756                                                         /*                                              } else { */
1757                                                         /* #if defined(__POWERPC__) */
1758                                                         /*                                                      if (src->varnum < INT_ARG_CNT - (IS_2_WORD_TYPE(src->type) != 0)) { */
1759                                                         /* #else */
1760                                                         /*                                                      if (src->varnum < INT_ARG_CNT) { */
1761                                                         /* #endif */
1762                                                         /*                                                              count_ss_register++; */
1763                                                         /*                                                              break; */
1764                                                         /*                                                      } */
1765                                                         /*                                              } */
1766                                                         /*                                              count_ss_spilled++; */
1767                                                         /*                                              break; */
1768                                                 }
1769                                         }
1770                                         src_old = src;
1771
1772                                         iptr++;
1773                                 } /* while instructions */
1774                         } /* if */
1775
1776                         bptr = bptr->next;
1777                 } /* while blocks */
1778                 count_interface_size += size_interface; /* accummulate the size of the interface (between bb boundaries) */
1779                 if (in_register) count_method_in_register++;
1780                 if (in_register) {
1781                         printf("INREGISTER: %s%s%s\n",m->class->name->text, m->name->text, m->descriptor->text);
1782                 }
1783 }
1784 #endif /* defined(ENABLE_STATISTICS) */
1785
1786
1787 /*
1788  * These are local overrides for various environment variables in Emacs.
1789  * Please do not remove this and leave it at the end of the file, where
1790  * Emacs will automagically detect them.
1791  * ---------------------------------------------------------------------
1792  * Local variables:
1793  * mode: c
1794  * indent-tabs-mode: t
1795  * c-basic-offset: 4
1796  * tab-width: 4
1797  * End:
1798  * vim:noexpandtab:sw=4:ts=4:
1799  */