jit/stack.c

   1 /* jit/stack.c *****************************************************************
   2
   3         Copyright (c) 1997 A. Krall, R. Grafl, M. Gschwind, M. Probst
   4
   5         See file COPYRIGHT for information on usage and disclaimer of warranties
   6
   7         Parser for JavaVM to intermediate code translation
   8
   9         Authors: Andreas  Krall      EMAIL: cacao@complang.tuwien.ac.at
  10
  11         Last Change: 1997/11/18
  12
  13 *******************************************************************************/
  14
  15 #ifdef STATISTICS
  16 #define COUNT(cnt) cnt++
  17 #else
  18 #define COUNT(cnt)
  19 #endif
  20
  21 #define STACKRESET {curstack=0;stackdepth=0;}
  22
  23 #define TYPEPANIC  {show_icmd_method();panic("Stack type mismatch");}
  24 #define CURKIND    curstack->varkind
  25 #define CURTYPE    curstack->type
  26
  27 #define NEWSTACK(s,v,n) {new->prev=curstack;new->type=s;new->flags=0;\
  28                         new->varkind=v;new->varnum=n;curstack=new;new++;}
  29 #define NEWSTACKn(s,n)  NEWSTACK(s,UNDEFVAR,n)
  30 #define NEWSTACK0(s)    NEWSTACK(s,UNDEFVAR,0)
  31 #define NEWXSTACK   {NEWSTACK(TYPE_ADR,STACKVAR,0);curstack=0;}
  32
  33 #define SETDST      {iptr->dst=curstack;}
  34 #define POP(s)      {if(s!=curstack->type){TYPEPANIC;}\
  35                      if(curstack->varkind==UNDEFVAR)curstack->varkind=TEMPVAR;\
  36                      curstack=curstack->prev;}
  37 #define POPANY      {if(curstack->varkind==UNDEFVAR)curstack->varkind=TEMPVAR;\
  38                      curstack=curstack->prev;}
  39 #define COPY(s,d)   {(d)->flags=0;(d)->type=(s)->type;\
  40                      (d)->varkind=(s)->varkind;(d)->varnum=(s)->varnum;}
  41
  42 #define PUSHCONST(s){NEWSTACKn(s,stackdepth);SETDST;stackdepth++;}
  43 #define LOAD(s,v,n) {NEWSTACK(s,v,n);SETDST;stackdepth++;}
  44 #define STORE(s)    {POP(s);SETDST;stackdepth--;}
  45 #define OP1_0(s)    {POP(s);SETDST;stackdepth--;}
  46 #define OP1_0ANY    {POPANY;SETDST;stackdepth--;}
  47 #define OP0_1(s)    {NEWSTACKn(s,stackdepth);SETDST;stackdepth++;}
  48 #define OP1_1(s,d)  {POP(s);NEWSTACKn(d,stackdepth-1);SETDST;}
  49 #define OP2_0(s)    {POP(s);POP(s);SETDST;stackdepth-=2;}
  50 #define OPTT2_0(t,b){POP(t);POP(b);SETDST;stackdepth-=2;}
  51 #define OP2_1(s)    {POP(s);POP(s);NEWSTACKn(s,stackdepth-2);SETDST;stackdepth--;}
  52 #define OP2IAT_1(s) {POP(TYPE_INT);POP(TYPE_ADR);NEWSTACKn(s,stackdepth-2);\
  53                      SETDST;stackdepth--;}
  54 #define OP2IT_1(s)  {POP(TYPE_INT);POP(s);NEWSTACKn(s,stackdepth-2);\
  55                      SETDST;stackdepth--;}
  56 #define OPTT2_1(s,d){POP(s);POP(s);NEWSTACKn(d,stackdepth-2);SETDST;stackdepth--;}
  57 #define OP2_2(s)    {POP(s);POP(s);NEWSTACKn(s,stackdepth-2);\
  58                      NEWSTACKn(s,stackdepth-1);SETDST;}
  59 #define OP3TIA_0(s) {POP(s);POP(TYPE_INT);POP(TYPE_ADR);SETDST;stackdepth-=3;}
  60 #define OP3_0(s)    {POP(s);POP(s);POP(s);SETDST;stackdepth-=3;}
  61 #define POPMANY(i)  {stackdepth-=i;while(--i>=0){POPANY;}SETDST;}
  62 #define DUP         {NEWSTACK(CURTYPE,CURKIND,curstack->varnum);SETDST;\
  63                     stackdepth++;}
  64 #define SWAP        {COPY(curstack,new);POPANY;COPY(curstack,new+1);POPANY;\
  65                     new[0].prev=curstack;new[1].prev=new;\
  66                     curstack=new+1;new+=2;SETDST;}
  67 #define DUP_X1      {COPY(curstack,new);COPY(curstack,new+2);POPANY;\
  68                     COPY(curstack,new+1);POPANY;new[0].prev=curstack;\
  69                     new[1].prev=new;new[2].prev=new+1;\
  70                     curstack=new+2;new+=3;SETDST;stackdepth++;}
  71 #define DUP2_X1     {COPY(curstack,new+1);COPY(curstack,new+4);POPANY;\
  72                     COPY(curstack,new);COPY(curstack,new+3);POPANY;\
  73                     COPY(curstack,new+2);POPANY;new[0].prev=curstack;\
  74                     new[1].prev=new;new[2].prev=new+1;\
  75                     new[3].prev=new+2;new[4].prev=new+3;\
  76                     curstack=new+4;new+=5;SETDST;stackdepth+=2;}
  77 #define DUP_X2      {COPY(curstack,new);COPY(curstack,new+3);POPANY;\
  78                     COPY(curstack,new+2);POPANY;COPY(curstack,new+1);POPANY;\
  79                     new[0].prev=curstack;new[1].prev=new;\
  80                     new[2].prev=new+1;new[3].prev=new+2;\
  81                     curstack=new+3;new+=4;SETDST;stackdepth++;}
  82 #define DUP2_X2     {COPY(curstack,new+1);COPY(curstack,new+5);POPANY;\
  83                     COPY(curstack,new);COPY(curstack,new+4);POPANY;\
  84                     COPY(curstack,new+3);POPANY;COPY(curstack,new+2);POPANY;\
  85                     new[0].prev=curstack;new[1].prev=new;\
  86                     new[2].prev=new+1;new[3].prev=new+2;\
  87                     new[4].prev=new+3;new[5].prev=new+4;\
  88                     curstack=new+5;new+=6;SETDST;stackdepth+=2;}
  89
  90 #define COPYCURSTACK(copy) {\
  91         int d;\
  92         stackptr s;\
  93         if(curstack){\
  94                 s=curstack;\
  95                 new+=stackdepth;\
  96                 d=stackdepth;\
  97                 copy=new;\
  98                 while(s){\
  99                         copy--;d--;\
 100                         copy->prev=copy-1;\
 101                         copy->type=s->type;\
 102                         copy->flags=0;\
 103                         copy->varkind=STACKVAR;\
 104                         copy->varnum=d;\
 105                         s=s->prev;\
 106                         }\
 107                 copy->prev=NULL;\
 108                 copy=new-1;\
 109                 }\
 110         else\
 111                 copy=NULL;\
 112 }
 113
 114
 115 #define BBEND(s,i){\
 116         i=stackdepth-1;\
 117         copy=s;\
 118         while(copy){\
 119                 if((copy->varkind==STACKVAR)&&(copy->varnum>i))\
 120                         copy->varkind=TEMPVAR;\
 121                 else {\
 122                         copy->varkind=STACKVAR;\
 123                         copy->varnum=i;\
 124                         }\
 125                 interfaces[i][copy->type].type = copy->type;\
 126                 interfaces[i][copy->type].flags |= copy->flags;\
 127                 i--;copy=copy->prev;\
 128                 }\
 129         i=bptr->indepth-1;\
 130         copy=bptr->instack;\
 131         while(copy){\
 132                 interfaces[i][copy->type].type = copy->type;\
 133                 if(copy->varkind==STACKVAR){\
 134                         if (copy->flags & SAVEDVAR)\
 135                                 interfaces[i][copy->type].flags |= SAVEDVAR;\
 136                         }\
 137                 i--;copy=copy->prev;\
 138                 }\
 139 }
 140
 141
 142 #define MARKREACHED(b,c) {\
 143         if(b->flags<0)\
 144                 {COPYCURSTACK(c);b->flags=0;b->instack=c;b->indepth=stackdepth;}\
 145         else {stackptr s=curstack;stackptr t=b->instack;\
 146                 if(b->indepth!=stackdepth)\
 147                         {show_icmd_method();panic("Stack depth mismatch");}\
 148                 while(s){if (s->type!=t->type)\
 149                                 TYPEPANIC\
 150                         s=s->prev;t=t->prev;\
 151                         }\
 152                 }\
 153 }
 154
 155
 156 static void show_icmd_method();
 157
 158 static void analyse_stack()
 159 {
 160         int b_count, b_index;
 161         int stackdepth;
 162         stackptr curstack, new, copy;
 163         int opcode, i, len, loops;
 164         int superblockend, repeat, deadcode;
 165         instruction *iptr = instr;
 166         basicblock *bptr, *tbptr;
 167         s4  *s4ptr;
 168
 169         arguments_num = 0;
 170         new = stack;
 171         loops = 0;
 172         block[0].flags = BBREACHED;
 173         block[0].instack = 0;
 174         block[0].indepth = 0;
 175
 176         for (i = 0; i < exceptiontablelength; i++) {
 177                 bptr = &block[block_index[extable[i].handlerpc]];
 178                 bptr->flags = BBREACHED;
 179                 bptr->type = BBTYPE_EXH;
 180                 bptr->instack = new;
 181                 bptr->indepth = 1;
 182                 bptr->pre_count = 10000;
 183                 STACKRESET;
 184                 NEWXSTACK;
 185                 }
 186
 187 #ifdef CONDITIONAL_LOADCONST
 188         b_count = block_count;
 189         bptr = block;
 190         while (--b_count >= 0) {
 191                 if (bptr->icount != 0) {
 192                         iptr = bptr->iinstr + bptr->icount - 1;
 193                         switch (iptr->opc) {
 194                                 case ICMD_RET:
 195                                 case ICMD_RETURN:
 196                                 case ICMD_IRETURN:
 197                                 case ICMD_LRETURN:
 198                                 case ICMD_FRETURN:
 199                                 case ICMD_DRETURN:
 200                                 case ICMD_ARETURN:
 201                                 case ICMD_ATHROW:
 202                                         break;
 203
 204                                 case ICMD_IFEQ:
 205                                 case ICMD_IFNE:
 206                                 case ICMD_IFLT:
 207                                 case ICMD_IFGE:
 208                                 case ICMD_IFGT:
 209                                 case ICMD_IFLE:
 210
 211                                 case ICMD_IFNULL:
 212                                 case ICMD_IFNONNULL:
 213
 214                                 case ICMD_IF_ICMPEQ:
 215                                 case ICMD_IF_ICMPNE:
 216                                 case ICMD_IF_ICMPLT:
 217                                 case ICMD_IF_ICMPGE:
 218                                 case ICMD_IF_ICMPGT:
 219                                 case ICMD_IF_ICMPLE:
 220
 221                                 case ICMD_IF_ACMPEQ:
 222                                 case ICMD_IF_ACMPNE:
 223                                         bptr[1].pre_count++;
 224                                 case ICMD_GOTO:
 225                                         block[block_index[iptr->op1]].pre_count++;
 226                                         break;
 227
 228                                 case ICMD_TABLESWITCH:
 229                                         s4ptr = iptr->val.a;
 230                                         block[block_index[*s4ptr++]].pre_count++;   /* default */
 231                                         i = *s4ptr++;                               /* low     */
 232                                         i = *s4ptr++ - i + 1;                       /* high    */
 233                                         while (--i >= 0) {
 234                                                 block[block_index[*s4ptr++]].pre_count++;
 235                                                 }
 236                                         break;
 237
 238                                 case ICMD_LOOKUPSWITCH:
 239                                         s4ptr = iptr->val.a;
 240                                         block[block_index[*s4ptr++]].pre_count++;   /* default */
 241                                         i = *s4ptr++;                               /* count   */
 242                                         while (--i >= 0) {
 243                                                 block[block_index[s4ptr[1]]].pre_count++;
 244                                                 s4ptr += 2;
 245                                                 }
 246                                         break;
 247                                 default:
 248                                         bptr[1].pre_count++;
 249                                         break;
 250                                 }
 251                         }
 252                 bptr++;
 253                 }
 254 #endif
 255
 256
 257         do {
 258                 loops++;
 259                 b_count = block_count;
 260                 bptr = block;
 261                 superblockend = true;
 262                 repeat = false;
 263                 STACKRESET;
 264                 deadcode = true;
 265                 while (--b_count >= 0) {
 266                         if (bptr->flags == BBDELETED) {
 267                                 /* do nothing */
 268                                 }
 269                         else if (superblockend && (bptr->flags < BBREACHED))
 270                                 repeat = true;
 271                         else if (bptr->flags <= BBREACHED) {
 272                                 if (superblockend)
 273                                         stackdepth = bptr->indepth;
 274                                 else if (bptr->flags < BBREACHED) {
 275                                         COPYCURSTACK(copy);
 276                                         bptr->instack = copy;
 277                                         bptr->indepth = stackdepth;
 278                                         }
 279                                 else if (bptr->indepth != stackdepth) {
 280                                         show_icmd_method();
 281                                         panic("Stack depth mismatch");
 282
 283                                         }
 284                                 curstack = bptr->instack;
 285                                 deadcode = false;
 286                                 superblockend = false;
 287                                 bptr->flags = BBFINISHED;
 288                                 len = bptr->icount;
 289                                 iptr = bptr->iinstr;
 290                                 b_index = bptr - block;
 291                                 while (--len >= 0)  {
 292                                         opcode = iptr->opc;
 293                                         switch (opcode) {
 294
 295                                                 /* pop 0 push 0 */
 296
 297                                                 case ICMD_NOP:
 298                                                 case ICMD_CHECKASIZE:
 299
 300                                                 case ICMD_IFEQ_ICONST:
 301                                                 case ICMD_IFNE_ICONST:
 302                                                 case ICMD_IFLT_ICONST:
 303                                                 case ICMD_IFGE_ICONST:
 304                                                 case ICMD_IFGT_ICONST:
 305                                                 case ICMD_IFLE_ICONST:
 306                                                 case ICMD_ELSE_ICONST:
 307                                                         SETDST;
 308                                                         break;
 309
 310                                                 case ICMD_RET:
 311                                                         locals[iptr->op1][TYPE_ADR].type = TYPE_ADR;
 312                                                 case ICMD_RETURN:
 313                                                         COUNT(count_pcmd_return);
 314                                                         SETDST;
 315                                                         superblockend = true;
 316                                                         break;
 317
 318                                                 /* pop 0 push 1 const */
 319
 320                                                 case ICMD_ICONST:
 321                                                         COUNT(count_pcmd_load);
 322                                                         if (len > 0) {
 323                                                                 switch (iptr[1].opc) {
 324                                                                         case ICMD_IADD:
 325                                                                                 iptr[0].opc = ICMD_IADDCONST;
 326 icmd_iconst_tail:
 327                                                                                 iptr[1].opc = ICMD_NOP;
 328                                                                                 OP1_1(TYPE_INT,TYPE_INT);
 329                                                                                 COUNT(count_pcmd_op);
 330                                                                                 break;
 331                                                                         case ICMD_ISUB:
 332                                                                                 iptr[0].opc = ICMD_ISUBCONST;
 333                                                                                 goto icmd_iconst_tail;
 334                                                                         case ICMD_IMUL:
 335                                                                                 iptr[0].opc = ICMD_IMULCONST;
 336                                                                                 goto icmd_iconst_tail;
 337                                                                         case ICMD_IDIV:
 338                                                                                 if (iptr[0].val.i == 0x00000002)
 339                                                                                         iptr[0].val.i = 1;
 340                                                                                 else if (iptr[0].val.i == 0x00000004)
 341                                                                                         iptr[0].val.i = 2;
 342                                                                                 else if (iptr[0].val.i == 0x00000008)
 343                                                                                         iptr[0].val.i = 3;
 344                                                                                 else if (iptr[0].val.i == 0x00000010)
 345                                                                                         iptr[0].val.i = 4;
 346                                                                                 else if (iptr[0].val.i == 0x00000020)
 347                                                                                         iptr[0].val.i = 5;
 348                                                                                 else if (iptr[0].val.i == 0x00000040)
 349                                                                                         iptr[0].val.i = 6;
 350                                                                                 else if (iptr[0].val.i == 0x00000080)
 351                                                                                         iptr[0].val.i = 7;
 352                                                                                 else if (iptr[0].val.i == 0x00000100)
 353                                                                                         iptr[0].val.i = 8;
 354                                                                                 else if (iptr[0].val.i == 0x00000200)
 355                                                                                         iptr[0].val.i = 9;
 356                                                                                 else if (iptr[0].val.i == 0x00000400)
 357                                                                                         iptr[0].val.i = 10;
 358                                                                                 else if (iptr[0].val.i == 0x00000800)
 359                                                                                         iptr[0].val.i = 11;
 360                                                                                 else if (iptr[0].val.i == 0x00001000)
 361                                                                                         iptr[0].val.i = 12;
 362                                                                                 else if (iptr[0].val.i == 0x00002000)
 363                                                                                         iptr[0].val.i = 13;
 364                                                                                 else if (iptr[0].val.i == 0x00004000)
 365                                                                                         iptr[0].val.i = 14;
 366                                                                                 else if (iptr[0].val.i == 0x00008000)
 367                                                                                         iptr[0].val.i = 15;
 368                                                                                 else if (iptr[0].val.i == 0x00010000)
 369                                                                                         iptr[0].val.i = 16;
 370                                                                                 else if (iptr[0].val.i == 0x00020000)
 371                                                                                         iptr[0].val.i = 17;
 372                                                                                 else if (iptr[0].val.i == 0x00040000)
 373                                                                                         iptr[0].val.i = 18;
 374                                                                                 else if (iptr[0].val.i == 0x00080000)
 375                                                                                         iptr[0].val.i = 19;
 376                                                                                 else if (iptr[0].val.i == 0x00100000)
 377                                                                                         iptr[0].val.i = 20;
 378                                                                                 else if (iptr[0].val.i == 0x00200000)
 379                                                                                         iptr[0].val.i = 21;
 380                                                                                 else if (iptr[0].val.i == 0x00400000)
 381                                                                                         iptr[0].val.i = 22;
 382                                                                                 else if (iptr[0].val.i == 0x00800000)
 383                                                                                         iptr[0].val.i = 23;
 384                                                                                 else if (iptr[0].val.i == 0x01000000)
 385                                                                                         iptr[0].val.i = 24;
 386                                                                                 else if (iptr[0].val.i == 0x02000000)
 387                                                                                         iptr[0].val.i = 25;
 388                                                                                 else if (iptr[0].val.i == 0x04000000)
 389                                                                                         iptr[0].val.i = 26;
 390                                                                                 else if (iptr[0].val.i == 0x08000000)
 391                                                                                         iptr[0].val.i = 27;
 392                                                                                 else if (iptr[0].val.i == 0x10000000)
 393                                                                                         iptr[0].val.i = 28;
 394                                                                                 else if (iptr[0].val.i == 0x20000000)
 395                                                                                         iptr[0].val.i = 29;
 396                                                                                 else if (iptr[0].val.i == 0x40000000)
 397                                                                                         iptr[0].val.i = 30;
 398                                                                                 else if (iptr[0].val.i == 0x80000000)
 399                                                                                         iptr[0].val.i = 31;
 400                                                                                 else {
 401                                                                                         PUSHCONST(TYPE_INT);
 402                                                                                         break;
 403                                                                                         }
 404                                                                                 iptr[0].opc = ICMD_IDIVPOW2;
 405                                                                                 goto icmd_iconst_tail;
 406                                                                         case ICMD_IREM:
 407                                                                                 if (iptr[0].val.i == 0x10001) {
 408                                                                                         iptr[0].opc = ICMD_IREM0X10001;
 409                                                                                         goto icmd_iconst_tail;
 410                                                                                         }
 411                                                                                 if ((iptr[0].val.i == 0x00000002) ||
 412                                                                                     (iptr[0].val.i == 0x00000004) ||
 413                                                                                     (iptr[0].val.i == 0x00000008) ||
 414                                                                                     (iptr[0].val.i == 0x00000010) ||
 415                                                                                     (iptr[0].val.i == 0x00000020) ||
 416                                                                                     (iptr[0].val.i == 0x00000040) ||
 417                                                                                     (iptr[0].val.i == 0x00000080) ||
 418                                                                                     (iptr[0].val.i == 0x00000100) ||
 419                                                                                     (iptr[0].val.i == 0x00000200) ||
 420                                                                                     (iptr[0].val.i == 0x00000400) ||
 421                                                                                     (iptr[0].val.i == 0x00000800) ||
 422                                                                                     (iptr[0].val.i == 0x00001000) ||
 423                                                                                     (iptr[0].val.i == 0x00002000) ||
 424                                                                                     (iptr[0].val.i == 0x00004000) ||
 425                                                                                     (iptr[0].val.i == 0x00008000) ||
 426                                                                                     (iptr[0].val.i == 0x00010000) ||
 427                                                                                     (iptr[0].val.i == 0x00020000) ||
 428                                                                                     (iptr[0].val.i == 0x00040000) ||
 429                                                                                     (iptr[0].val.i == 0x00080000) ||
 430                                                                                     (iptr[0].val.i == 0x00100000) ||
 431                                                                                     (iptr[0].val.i == 0x00200000) ||
 432                                                                                     (iptr[0].val.i == 0x00400000) ||
 433                                                                                     (iptr[0].val.i == 0x00800000) ||
 434                                                                                     (iptr[0].val.i == 0x01000000) ||
 435                                                                                     (iptr[0].val.i == 0x02000000) ||
 436                                                                                     (iptr[0].val.i == 0x04000000) ||
 437                                                                                     (iptr[0].val.i == 0x08000000) ||
 438                                                                                     (iptr[0].val.i == 0x10000000) ||
 439                                                                                     (iptr[0].val.i == 0x20000000) ||
 440                                                                                     (iptr[0].val.i == 0x40000000) ||
 441                                                                                     (iptr[0].val.i == 0x80000000)) {
 442                                                                                         iptr[0].opc = ICMD_IREMPOW2;
 443                                                                                         iptr[0].val.i -= 1;
 444                                                                                         goto icmd_iconst_tail;
 445                                                                                         }
 446                                                                                 PUSHCONST(TYPE_INT);
 447                                                                                 break;
 448                                                                         case ICMD_IAND:
 449                                                                                 iptr[0].opc = ICMD_IANDCONST;
 450                                                                                 goto icmd_iconst_tail;
 451                                                                         case ICMD_IOR:
 452                                                                                 iptr[0].opc = ICMD_IORCONST;
 453                                                                                 goto icmd_iconst_tail;
 454                                                                         case ICMD_IXOR:
 455                                                                                 iptr[0].opc = ICMD_IXORCONST;
 456                                                                                 goto icmd_iconst_tail;
 457                                                                         case ICMD_ISHL:
 458                                                                                 iptr[0].opc = ICMD_ISHLCONST;
 459                                                                                 goto icmd_iconst_tail;
 460                                                                         case ICMD_ISHR:
 461                                                                                 iptr[0].opc = ICMD_ISHRCONST;
 462                                                                                 goto icmd_iconst_tail;
 463                                                                         case ICMD_IUSHR:
 464                                                                                 iptr[0].opc = ICMD_IUSHRCONST;
 465                                                                                 goto icmd_iconst_tail;
 466                                                                         case ICMD_IF_ICMPEQ:
 467                                                                                 iptr[0].opc = ICMD_IFEQ;
 468 icmd_if_icmp_tail:
 469                                                                                 iptr[0].op1 = iptr[1].op1;
 470                                                                                 bptr->icount--;
 471                                                                                 len--;
 472                                                                                 /* iptr[1].opc = ICMD_NOP; */
 473                                                                                 OP1_0(TYPE_INT);
 474                                                                                 tbptr = block + block_index[iptr->op1];
 475                                                                                 MARKREACHED(tbptr, copy);
 476                                                                                 COUNT(count_pcmd_bra);
 477                                                                                 break;
 478                                                                         case ICMD_IF_ICMPLT:
 479                                                                                 iptr[0].opc = ICMD_IFLT;
 480                                                                                 goto icmd_if_icmp_tail;
 481                                                                         case ICMD_IF_ICMPLE:
 482                                                                                 iptr[0].opc = ICMD_IFLE;
 483                                                                                 goto icmd_if_icmp_tail;
 484                                                                         case ICMD_IF_ICMPNE:
 485                                                                                 iptr[0].opc = ICMD_IFNE;
 486                                                                                 goto icmd_if_icmp_tail;
 487                                                                         case ICMD_IF_ICMPGT:
 488                                                                                 iptr[0].opc = ICMD_IFGT;
 489                                                                                 goto icmd_if_icmp_tail;
 490                                                                         case ICMD_IF_ICMPGE:
 491                                                                                 iptr[0].opc = ICMD_IFGE;
 492                                                                                 goto icmd_if_icmp_tail;
 493                                                                         default:
 494                                                                                 PUSHCONST(TYPE_INT);
 495                                                                         }
 496                                                                 }
 497                                                         else
 498                                                                 PUSHCONST(TYPE_INT);
 499                                                         break;
 500                                                 case ICMD_LCONST:
 501                                                         COUNT(count_pcmd_load);
 502                                                         if (len > 0) {
 503                                                                 switch (iptr[1].opc) {
 504                                                                         case ICMD_LADD:
 505                                                                                 iptr[0].opc = ICMD_LADDCONST;
 506 icmd_lconst_tail:
 507                                                                                 iptr[1].opc = ICMD_NOP;
 508                                                                                 OP1_1(TYPE_LNG,TYPE_LNG);
 509                                                                                 COUNT(count_pcmd_op);
 510                                                                                 break;
 511                                                                         case ICMD_LSUB:
 512                                                                                 iptr[0].opc = ICMD_LSUBCONST;
 513                                                                                 goto icmd_lconst_tail;
 514                                                                         case ICMD_LMUL:
 515                                                                                 iptr[0].opc = ICMD_LMULCONST;
 516                                                                                 goto icmd_lconst_tail;
 517                                                                         case ICMD_LDIV:
 518                                                                                 if (iptr[0].val.l == 0x00000002)
 519                                                                                         iptr[0].val.i = 1;
 520                                                                                 else if (iptr[0].val.l == 0x00000004)
 521                                                                                         iptr[0].val.i = 2;
 522                                                                                 else if (iptr[0].val.l == 0x00000008)
 523                                                                                         iptr[0].val.i = 3;
 524                                                                                 else if (iptr[0].val.l == 0x00000010)
 525                                                                                         iptr[0].val.i = 4;
 526                                                                                 else if (iptr[0].val.l == 0x00000020)
 527                                                                                         iptr[0].val.i = 5;
 528                                                                                 else if (iptr[0].val.l == 0x00000040)
 529                                                                                         iptr[0].val.i = 6;
 530                                                                                 else if (iptr[0].val.l == 0x00000080)
 531                                                                                         iptr[0].val.i = 7;
 532                                                                                 else if (iptr[0].val.l == 0x00000100)
 533                                                                                         iptr[0].val.i = 8;
 534                                                                                 else if (iptr[0].val.l == 0x00000200)
 535                                                                                         iptr[0].val.i = 9;
 536                                                                                 else if (iptr[0].val.l == 0x00000400)
 537                                                                                         iptr[0].val.i = 10;
 538                                                                                 else if (iptr[0].val.l == 0x00000800)
 539                                                                                         iptr[0].val.i = 11;
 540                                                                                 else if (iptr[0].val.l == 0x00001000)
 541                                                                                         iptr[0].val.i = 12;
 542                                                                                 else if (iptr[0].val.l == 0x00002000)
 543                                                                                         iptr[0].val.i = 13;
 544                                                                                 else if (iptr[0].val.l == 0x00004000)
 545                                                                                         iptr[0].val.i = 14;
 546                                                                                 else if (iptr[0].val.l == 0x00008000)
 547                                                                                         iptr[0].val.i = 15;
 548                                                                                 else if (iptr[0].val.l == 0x00010000)
 549                                                                                         iptr[0].val.i = 16;
 550                                                                                 else if (iptr[0].val.l == 0x00020000)
 551                                                                                         iptr[0].val.i = 17;
 552                                                                                 else if (iptr[0].val.l == 0x00040000)
 553                                                                                         iptr[0].val.i = 18;
 554                                                                                 else if (iptr[0].val.l == 0x00080000)
 555                                                                                         iptr[0].val.i = 19;
 556                                                                                 else if (iptr[0].val.l == 0x00100000)
 557                                                                                         iptr[0].val.i = 20;
 558                                                                                 else if (iptr[0].val.l == 0x00200000)
 559                                                                                         iptr[0].val.i = 21;
 560                                                                                 else if (iptr[0].val.l == 0x00400000)
 561                                                                                         iptr[0].val.i = 22;
 562                                                                                 else if (iptr[0].val.l == 0x00800000)
 563                                                                                         iptr[0].val.i = 23;
 564                                                                                 else if (iptr[0].val.l == 0x01000000)
 565                                                                                         iptr[0].val.i = 24;
 566                                                                                 else if (iptr[0].val.l == 0x02000000)
 567                                                                                         iptr[0].val.i = 25;
 568                                                                                 else if (iptr[0].val.l == 0x04000000)
 569                                                                                         iptr[0].val.i = 26;
 570                                                                                 else if (iptr[0].val.l == 0x08000000)
 571                                                                                         iptr[0].val.i = 27;
 572                                                                                 else if (iptr[0].val.l == 0x10000000)
 573                                                                                         iptr[0].val.i = 28;
 574                                                                                 else if (iptr[0].val.l == 0x20000000)
 575                                                                                         iptr[0].val.i = 29;
 576                                                                                 else if (iptr[0].val.l == 0x40000000)
 577                                                                                         iptr[0].val.i = 30;
 578                                                                                 else if (iptr[0].val.l == 0x80000000)
 579                                                                                         iptr[0].val.i = 31;
 580                                                                                 else {
 581                                                                                         PUSHCONST(TYPE_LNG);
 582                                                                                         break;
 583                                                                                         }
 584                                                                                 iptr[0].opc = ICMD_LDIVPOW2;
 585                                                                                 goto icmd_lconst_tail;
 586                                                                         case ICMD_LREM:
 587                                                                                 if (iptr[0].val.l == 0x10001) {
 588                                                                                         iptr[0].opc = ICMD_LREM0X10001;
 589                                                                                         goto icmd_lconst_tail;
 590                                                                                         }
 591                                                                                 if ((iptr[0].val.l == 0x00000002) ||
 592                                                                                     (iptr[0].val.l == 0x00000004) ||
 593                                                                                     (iptr[0].val.l == 0x00000008) ||
 594                                                                                     (iptr[0].val.l == 0x00000010) ||
 595                                                                                     (iptr[0].val.l == 0x00000020) ||
 596                                                                                     (iptr[0].val.l == 0x00000040) ||
 597                                                                                     (iptr[0].val.l == 0x00000080) ||
 598                                                                                     (iptr[0].val.l == 0x00000100) ||
 599                                                                                     (iptr[0].val.l == 0x00000200) ||
 600                                                                                     (iptr[0].val.l == 0x00000400) ||
 601                                                                                     (iptr[0].val.l == 0x00000800) ||
 602                                                                                     (iptr[0].val.l == 0x00001000) ||
 603                                                                                     (iptr[0].val.l == 0x00002000) ||
 604                                                                                     (iptr[0].val.l == 0x00004000) ||
 605                                                                                     (iptr[0].val.l == 0x00008000) ||
 606                                                                                     (iptr[0].val.l == 0x00010000) ||
 607                                                                                     (iptr[0].val.l == 0x00020000) ||
 608                                                                                     (iptr[0].val.l == 0x00040000) ||
 609                                                                                     (iptr[0].val.l == 0x00080000) ||
 610                                                                                     (iptr[0].val.l == 0x00100000) ||
 611                                                                                     (iptr[0].val.l == 0x00200000) ||
 612                                                                                     (iptr[0].val.l == 0x00400000) ||
 613                                                                                     (iptr[0].val.l == 0x00800000) ||
 614                                                                                     (iptr[0].val.l == 0x01000000) ||
 615                                                                                     (iptr[0].val.l == 0x02000000) ||
 616                                                                                     (iptr[0].val.l == 0x04000000) ||
 617                                                                                     (iptr[0].val.l == 0x08000000) ||
 618                                                                                     (iptr[0].val.l == 0x10000000) ||
 619                                                                                     (iptr[0].val.l == 0x20000000) ||
 620                                                                                     (iptr[0].val.l == 0x40000000) ||
 621                                                                                     (iptr[0].val.l == 0x80000000)) {
 622                                                                                         iptr[0].opc = ICMD_LREMPOW2;
 623                                                                                         iptr[0].val.l -= 1;
 624                                                                                         goto icmd_lconst_tail;
 625                                                                                         }
 626                                                                                 PUSHCONST(TYPE_LNG);
 627                                                                                 break;
 628                                                                         case ICMD_LAND:
 629                                                                                 iptr[0].opc = ICMD_LANDCONST;
 630                                                                                 goto icmd_lconst_tail;
 631                                                                         case ICMD_LOR:
 632                                                                                 iptr[0].opc = ICMD_LORCONST;
 633                                                                                 goto icmd_lconst_tail;
 634                                                                         case ICMD_LXOR:
 635                                                                                 iptr[0].opc = ICMD_LXORCONST;
 636                                                                                 goto icmd_lconst_tail;
 637                                                                         case ICMD_LSHL:
 638                                                                                 iptr[0].opc = ICMD_LSHLCONST;
 639                                                                                 goto icmd_lconst_tail;
 640                                                                         case ICMD_LSHR:
 641                                                                                 iptr[0].opc = ICMD_LSHRCONST;
 642                                                                                 goto icmd_lconst_tail;
 643                                                                         case ICMD_LUSHR:
 644                                                                                 iptr[0].opc = ICMD_LUSHRCONST;
 645                                                                                 goto icmd_lconst_tail;
 646                                                                         case ICMD_LCMP:
 647                                                                                 if ((len > 1) && (iptr[2].val.i == 0)) {
 648                                                                                         switch (iptr[2].opc) {
 649                                                                                         case ICMD_IFEQ:
 650                                                                                                 iptr[0].opc = ICMD_IF_LEQ;
 651 icmd_lconst_lcmp_tail:
 652                                                                                                 iptr[0].op1 = iptr[2].op1;
 653                                                                                                 bptr->icount -= 2;
 654                                                                                                 len -= 2;
 655                                                                                                 /* iptr[1].opc = ICMD_NOP;
 656                                                                                                 iptr[2].opc = ICMD_NOP; */
 657                                                                                                 OP1_0(TYPE_LNG);
 658                                                                                                 tbptr = block + block_index[iptr->op1];
 659                                                                                                 MARKREACHED(tbptr, copy);
 660                                                                                                 COUNT(count_pcmd_bra);
 661                                                                                                 COUNT(count_pcmd_op);
 662                                                                                                 break;
 663                                                                                         case ICMD_IFNE:
 664                                                                                                 iptr[0].opc = ICMD_IF_LNE;
 665                                                                                                 goto icmd_lconst_lcmp_tail;
 666                                                                                         case ICMD_IFLT:
 667                                                                                                 iptr[0].opc = ICMD_IF_LLT;
 668                                                                                                 goto icmd_lconst_lcmp_tail;
 669                                                                                         case ICMD_IFGT:
 670                                                                                                 iptr[0].opc = ICMD_IF_LGT;
 671                                                                                                 goto icmd_lconst_lcmp_tail;
 672                                                                                         case ICMD_IFLE:
 673                                                                                                 iptr[0].opc = ICMD_IF_LLE;
 674                                                                                                 goto icmd_lconst_lcmp_tail;
 675                                                                                         case ICMD_IFGE:
 676                                                                                                 iptr[0].opc = ICMD_IF_LGE;
 677                                                                                                 goto icmd_lconst_lcmp_tail;
 678                                                                                         default:
 679                                                                                                 PUSHCONST(TYPE_LNG);
 680                                                                                         } /* switch (iptr[2].opc) */
 681                                                                                         } /* if (iptr[2].val.i == 0) */
 682                                                                                 else
 683                                                                                         PUSHCONST(TYPE_LNG);
 684                                                                                 break;
 685                                                                         default:
 686                                                                                 PUSHCONST(TYPE_LNG);
 687                                                                         }
 688                                                                 }
 689                                                         else
 690                                                                 PUSHCONST(TYPE_LNG);
 691                                                         break;
 692                                                 case ICMD_FCONST:
 693                                                         COUNT(count_pcmd_load);
 694                                                         PUSHCONST(TYPE_FLT);
 695                                                         break;
 696                                                 case ICMD_DCONST:
 697                                                         COUNT(count_pcmd_load);
 698                                                         PUSHCONST(TYPE_DBL);
 699                                                         break;
 700                                                 case ICMD_ACONST:
 701                                                         COUNT(count_pcmd_load);
 702                                                         PUSHCONST(TYPE_ADR);
 703                                                         break;
 704
 705                                                 /* pop 0 push 1 load */
 706
 707                                                 case ICMD_ILOAD:
 708                                                 case ICMD_LLOAD:
 709                                                 case ICMD_FLOAD:
 710                                                 case ICMD_DLOAD:
 711                                                 case ICMD_ALOAD:
 712                                                         COUNT(count_load_instruction);
 713                                                         i = opcode-ICMD_ILOAD;
 714                                                         locals[iptr->op1][i].type = i;
 715                                                         LOAD(i, LOCALVAR, iptr->op1);
 716                                                         break;
 717
 718                                                 /* pop 2 push 1 */
 719
 720                                                 case ICMD_IALOAD:
 721                                                 case ICMD_LALOAD:
 722                                                 case ICMD_FALOAD:
 723                                                 case ICMD_DALOAD:
 724                                                 case ICMD_AALOAD:
 725                                                         COUNT(count_check_null);
 726                                                         COUNT(count_check_bound);
 727                                                         COUNT(count_pcmd_mem);
 728                                                         OP2IAT_1(opcode-ICMD_IALOAD);
 729                                                         break;
 730
 731                                                 case ICMD_BALOAD:
 732                                                 case ICMD_CALOAD:
 733                                                 case ICMD_SALOAD:
 734                                                         COUNT(count_check_null);
 735                                                         COUNT(count_check_bound);
 736                                                         COUNT(count_pcmd_mem);
 737                                                         OP2IAT_1(TYPE_INT);
 738                                                         break;
 739
 740                                                 /* pop 0 push 0 iinc */
 741
 742                                                 case ICMD_IINC:
 743 #ifdef STATISTICS
 744                                                         i = stackdepth;
 745                                                         if (i >= 10)
 746                                                                 count_store_depth[10]++;
 747                                                         else
 748                                                                 count_store_depth[i]++;
 749 #endif
 750                                                         copy = curstack;
 751                                                         i = stackdepth - 1;
 752                                                         while (copy) {
 753                                                                 if ((copy->varkind == LOCALVAR) &&
 754                                                                     (copy->varnum == curstack->varnum)) {
 755                                                                         copy->varkind = TEMPVAR;
 756                                                                         copy->varnum = i;
 757                                                                         }
 758                                                                 i--;
 759                                                                 copy = copy->prev;
 760                                                                 }
 761                                                         SETDST;
 762                                                         break;
 763
 764                                                 /* pop 1 push 0 store */
 765
 766                                                 case ICMD_ISTORE:
 767                                                 case ICMD_LSTORE:
 768                                                 case ICMD_FSTORE:
 769                                                 case ICMD_DSTORE:
 770                                                 case ICMD_ASTORE:
 771                                                         i = opcode-ICMD_ISTORE;
 772                                                         locals[iptr->op1][i].type = i;
 773 #ifdef STATISTICS
 774                                                         count_pcmd_store++;
 775                                                         i = new - curstack;
 776                                                         if (i >= 20)
 777                                                                 count_store_length[20]++;
 778                                                         else
 779                                                                 count_store_length[i]++;
 780                                                         i = stackdepth - 1;
 781                                                         if (i >= 10)
 782                                                                 count_store_depth[10]++;
 783                                                         else
 784                                                                 count_store_depth[i]++;
 785 #endif
 786                                                         copy = curstack->prev;
 787                                                         i = stackdepth - 2;
 788                                                         while (copy) {
 789                                                                 if ((copy->varkind == LOCALVAR) &&
 790                                                                     (copy->varnum == curstack->varnum)) {
 791                                                                         copy->varkind = TEMPVAR;
 792                                                                         copy->varnum = i;
 793                                                                         }
 794                                                                 i--;
 795                                                                 copy = copy->prev;
 796                                                                 }
 797                                                         if ((new - curstack) == 1) {
 798                                                                 curstack->varkind = LOCALVAR;
 799                                                                 curstack->varnum = iptr->op1;
 800                                                                 };
 801                                                         STORE(opcode-ICMD_ISTORE);
 802                                                         break;
 803
 804                                                 /* pop 3 push 0 */
 805
 806                                                 case ICMD_IASTORE:
 807                                                 case ICMD_LASTORE:
 808                                                 case ICMD_FASTORE:
 809                                                 case ICMD_DASTORE:
 810                                                 case ICMD_AASTORE:
 811                                                         COUNT(count_check_null);
 812                                                         COUNT(count_check_bound);
 813                                                         COUNT(count_pcmd_mem);
 814                                                         OP3TIA_0(opcode-ICMD_IASTORE);
 815                                                         break;
 816                                                 case ICMD_BASTORE:
 817                                                 case ICMD_CASTORE:
 818                                                 case ICMD_SASTORE:
 819                                                         COUNT(count_check_null);
 820                                                         COUNT(count_check_bound);
 821                                                         COUNT(count_pcmd_mem);
 822                                                         OP3TIA_0(TYPE_INT);
 823                                                         break;
 824
 825                                                 /* pop 1 push 0 */
 826
 827                                                 case ICMD_POP:
 828                                                         OP1_0ANY;
 829                                                         break;
 830
 831                                                 case ICMD_IRETURN:
 832                                                 case ICMD_LRETURN:
 833                                                 case ICMD_FRETURN:
 834                                                 case ICMD_DRETURN:
 835                                                 case ICMD_ARETURN:
 836                                                         COUNT(count_pcmd_return);
 837                                                         OP1_0(opcode-ICMD_IRETURN);
 838                                                         superblockend = true;
 839                                                         break;
 840
 841                                                 case ICMD_ATHROW:
 842                                                         COUNT(count_check_null);
 843                                                         OP1_0(TYPE_ADR);
 844                                                         STACKRESET;
 845                                                         SETDST;
 846                                                         superblockend = true;
 847                                                         break;
 848
 849                                                 case ICMD_PUTSTATIC:
 850                                                         COUNT(count_pcmd_mem);
 851                                                         OP1_0(iptr->op1);
 852                                                         break;
 853
 854                                                 /* pop 1 push 0 branch */
 855
 856                                                 case ICMD_IFNULL:
 857                                                 case ICMD_IFNONNULL:
 858                                                         COUNT(count_pcmd_bra);
 859                                                         OP1_0(TYPE_ADR);
 860                                                         tbptr = block + block_index[iptr->op1];
 861                                                         MARKREACHED(tbptr, copy);
 862                                                         break;
 863
 864                                                 case ICMD_IFEQ:
 865                                                 case ICMD_IFNE:
 866                                                 case ICMD_IFLT:
 867                                                 case ICMD_IFGE:
 868                                                 case ICMD_IFGT:
 869                                                 case ICMD_IFLE:
 870                                                         COUNT(count_pcmd_bra);
 871 #ifdef CONDITIONAL_LOADCONST
 872                                                         {
 873                                                         tbptr = block + b_index;
 874                                                         if ((b_count >= 3) &&
 875                                                             ((b_index + 2) == block_index[iptr[0].op1]) &&
 876                                                             (tbptr[1].pre_count == 1) &&
 877                                                             (iptr[1].opc == ICMD_ICONST) &&
 878                                                             (iptr[2].opc == ICMD_GOTO)   &&
 879                                                             ((b_index + 3) == block_index[iptr[2].op1]) &&
 880                                                             (tbptr[2].pre_count == 1) &&
 881                                                             (iptr[3].opc == ICMD_ICONST)) {
 882                                                                 OP1_1(TYPE_INT, TYPE_INT);
 883                                                                 switch (iptr[0].opc) {
 884                                                                         case ICMD_IFEQ:
 885                                                                                 iptr[0].opc = ICMD_IFNE_ICONST;
 886                                                                                 break;
 887                                                                         case ICMD_IFNE:
 888                                                                                 iptr[0].opc = ICMD_IFEQ_ICONST;
 889                                                                                 break;
 890                                                                         case ICMD_IFLT:
 891                                                                                 iptr[0].opc = ICMD_IFGE_ICONST;
 892                                                                                 break;
 893                                                                         case ICMD_IFGE:
 894                                                                                 iptr[0].opc = ICMD_IFLT_ICONST;
 895                                                                                 break;
 896                                                                         case ICMD_IFGT:
 897                                                                                 iptr[0].opc = ICMD_IFLE_ICONST;
 898                                                                                 break;
 899                                                                         case ICMD_IFLE:
 900                                                                                 iptr[0].opc = ICMD_IFGT_ICONST;
 901                                                                                 break;
 902                                                                         }
 903                                                                 iptr[0].val.i = iptr[1].val.i;
 904                                                                 iptr[1].opc = ICMD_ELSE_ICONST;
 905                                                                 iptr[1].val.i = iptr[3].val.i;
 906                                                                 iptr[2].opc = ICMD_NOP;
 907                                                                 iptr[3].opc = ICMD_NOP;
 908                                                                 tbptr[1].flags = BBDELETED;
 909                                                                 tbptr[2].flags = BBDELETED;
 910                                                                 tbptr[1].icount = 0;
 911                                                                 tbptr[2].icount = 0;
 912                                                                 if (tbptr[3].pre_count == 2) {
 913                                                                         len += tbptr[3].icount + 3;
 914                                                                         bptr->icount += tbptr[3].icount + 3;
 915                                                                         tbptr[3].flags = BBDELETED;
 916                                                                         tbptr[3].icount = 0;
 917                                                                         b_index++;
 918                                                                         }
 919                                                                 else {
 920                                                                         bptr->icount++;
 921                                                                         len ++;
 922                                                                         }
 923                                                                 b_index += 2;
 924                                                                 break;
 925                                                                 }
 926                                                         }
 927 #endif
 928                                                         OP1_0(TYPE_INT);
 929                                                         tbptr = block + block_index[iptr->op1];
 930                                                         MARKREACHED(tbptr, copy);
 931                                                         break;
 932
 933                                                 /* pop 0 push 0 branch */
 934
 935                                                 case ICMD_GOTO:
 936                                                         COUNT(count_pcmd_bra);
 937                                                         tbptr = block + block_index[iptr->op1];
 938                                                         MARKREACHED(tbptr, copy);
 939                                                         SETDST;
 940                                                         superblockend = true;
 941                                                         break;
 942
 943                                                 /* pop 1 push 0 table branch */
 944
 945                                                 case ICMD_TABLESWITCH:
 946                                                         COUNT(count_pcmd_table);
 947                                                         OP1_0(TYPE_INT);
 948                                                         s4ptr = iptr->val.a;
 949                                                         tbptr = block + block_index[*s4ptr++]; /* default */
 950                                                         MARKREACHED(tbptr, copy);
 951                                                         i = *s4ptr++;                          /* low     */
 952                                                         i = *s4ptr++ - i + 1;                  /* high    */
 953                                                         while (--i >= 0) {
 954                                                                 tbptr = block + block_index[*s4ptr++];
 955                                                                 MARKREACHED(tbptr, copy);
 956                                                                 }
 957                                                         SETDST;
 958                                                         superblockend = true;
 959                                                         break;
 960
 961                                                 /* pop 1 push 0 table branch */
 962
 963                                                 case ICMD_LOOKUPSWITCH:
 964                                                         COUNT(count_pcmd_table);
 965                                                         OP1_0(TYPE_INT);
 966                                                         s4ptr = iptr->val.a;
 967                                                         tbptr = block + block_index[*s4ptr++]; /* default */
 968                                                         MARKREACHED(tbptr, copy);
 969                                                         i = *s4ptr++;                          /* count   */
 970                                                         while (--i >= 0) {
 971                                                                 tbptr = block + block_index[s4ptr[1]];
 972                                                                 MARKREACHED(tbptr, copy);
 973                                                                 s4ptr += 2;
 974                                                                 }
 975                                                         SETDST;
 976                                                         superblockend = true;
 977                                                         break;
 978
 979                                                 case ICMD_NULLCHECKPOP:
 980                                                 case ICMD_MONITORENTER:
 981                                                         COUNT(count_check_null);
 982                                                 case ICMD_MONITOREXIT:
 983                                                         OP1_0(TYPE_ADR);
 984                                                         break;
 985
 986                                                 /* pop 2 push 0 branch */
 987
 988                                                 case ICMD_IF_ICMPEQ:
 989                                                 case ICMD_IF_ICMPNE:
 990                                                 case ICMD_IF_ICMPLT:
 991                                                 case ICMD_IF_ICMPGE:
 992                                                 case ICMD_IF_ICMPGT:
 993                                                 case ICMD_IF_ICMPLE:
 994                                                         COUNT(count_pcmd_bra);
 995                                                         OP2_0(TYPE_INT);
 996                                                         tbptr = block + block_index[iptr->op1];
 997                                                         MARKREACHED(tbptr, copy);
 998                                                         break;
 999
1000                                                 case ICMD_IF_ACMPEQ:
1001                                                 case ICMD_IF_ACMPNE:
1002                                                         COUNT(count_pcmd_bra);
1003                                                         OP2_0(TYPE_ADR);
1004                                                         tbptr = block + block_index[iptr->op1];
1005                                                         MARKREACHED(tbptr, copy);
1006                                                         break;
1007
1008                                                 /* pop 2 push 0 */
1009
1010                                                 case ICMD_PUTFIELD:
1011                                                         COUNT(count_check_null);
1012                                                         COUNT(count_pcmd_mem);
1013                                                         OPTT2_0(iptr->op1,TYPE_ADR);
1014                                                         break;
1015
1016                                                 case ICMD_POP2:
1017                                                         if (! IS_2_WORD_TYPE(curstack->type)) {
1018                                                                 OP1_0ANY;                /* second pop */
1019                                                                 }
1020                                                         else
1021                                                                 iptr->opc = ICMD_POP;
1022                                                         OP1_0ANY;
1023                                                         break;
1024
1025                                                 /* pop 0 push 1 dup */
1026
1027                                                 case ICMD_DUP:
1028                                                         COUNT(count_dup_instruction);
1029                                                         DUP;
1030                                                         break;
1031
1032                                                 case ICMD_DUP2:
1033                                                         if (IS_2_WORD_TYPE(curstack->type)) {
1034                                                                 iptr->opc = ICMD_DUP;
1035                                                                 DUP;
1036                                                                 }
1037                                                         else {
1038                                                                 copy = curstack;
1039                                                                 NEWSTACK(copy->prev->type, copy->prev->varkind,
1040                                                                          copy->prev->varnum);
1041                                                                 NEWSTACK(copy->type, copy->varkind,
1042                                                                          copy->varnum);
1043                                                                 SETDST;
1044                                                                 stackdepth+=2;
1045                                                                 }
1046                                                         break;
1047
1048                                                 /* pop 2 push 3 dup */
1049
1050                                                 case ICMD_DUP_X1:
1051                                                         DUP_X1;
1052                                                         break;
1053
1054                                                 case ICMD_DUP2_X1:
1055                                                         if (IS_2_WORD_TYPE(curstack->type)) {
1056                                                                 iptr->opc = ICMD_DUP_X1;
1057                                                                 DUP_X1;
1058                                                                 }
1059                                                         else {
1060                                                                 DUP2_X1;
1061                                                                 }
1062                                                         break;
1063
1064                                                 /* pop 3 push 4 dup */
1065
1066                                                 case ICMD_DUP_X2:
1067                                                         if (IS_2_WORD_TYPE(curstack[-1].type)) {
1068                                                                 iptr->opc = ICMD_DUP_X1;
1069                                                                 DUP_X1;
1070                                                                 }
1071                                                         else {
1072                                                                 DUP_X2;
1073                                                                 }
1074                                                         break;
1075
1076                                                 case ICMD_DUP2_X2:
1077                                                         if (IS_2_WORD_TYPE(curstack->type)) {
1078                                                                 if (IS_2_WORD_TYPE(curstack[-1].type)) {
1079                                                                         iptr->opc = ICMD_DUP_X1;
1080                                                                         DUP_X1;
1081                                                                         }
1082                                                                 else {
1083                                                                         iptr->opc = ICMD_DUP_X2;
1084                                                                         DUP_X2;
1085                                                                         }
1086                                                                 }
1087                                                         else
1088                                                                 if (IS_2_WORD_TYPE(curstack[-2].type)) {
1089                                                                         iptr->opc = ICMD_DUP2_X1;
1090                                                                         DUP2_X1;
1091                                                                         }
1092                                                                 else {
1093                                                                         DUP2_X2;
1094                                                                         }
1095                                                         break;
1096
1097                                                 /* pop 2 push 2 swap */
1098
1099                                                 case ICMD_SWAP:
1100                                                         SWAP;
1101                                                         break;
1102
1103                                                 /* pop 2 push 1 */
1104
1105                                                 case ICMD_IDIV:
1106                                                         if (!(SUPPORT_DIVISION)) {
1107                                                                 iptr[0].opc = ICMD_BUILTIN2;
1108                                                                 iptr[0].op1 = TYPE_INT;
1109                                                                 iptr[0].val.a = (functionptr) asm_builtin_idiv;
1110                                                                 isleafmethod = false;
1111                                                                 goto builtin2;
1112                                                                 }
1113
1114                                                 case ICMD_LDIV:
1115                                                         if (!(SUPPORT_DIVISION && SUPPORT_LONG && SUPPORT_LONG_MULDIV)) {
1116                                                                 iptr[0].opc = ICMD_BUILTIN2;
1117                                                                 iptr[0].op1 = TYPE_LNG;
1118                                                                 iptr[0].val.a = (functionptr) asm_builtin_ldiv;
1119                                                                 isleafmethod = false;
1120                                                                 goto builtin2;
1121                                                                 }
1122
1123                                                 case ICMD_IREM:
1124                                                         if (!(SUPPORT_DIVISION)) {
1125                                                                 iptr[0].opc = ICMD_BUILTIN2;
1126                                                                 iptr[0].op1 = TYPE_INT;
1127                                                                 iptr[0].val.a = (functionptr) asm_builtin_irem;
1128                                                                 isleafmethod = false;
1129                                                                 goto builtin2;
1130                                                                 }
1131
1132                                                 case ICMD_LREM:
1133                                                         if (!(SUPPORT_DIVISION && SUPPORT_LONG && SUPPORT_LONG_MULDIV)) {
1134                                                                 iptr[0].opc = ICMD_BUILTIN2;
1135                                                                 iptr[0].op1 = TYPE_LNG;
1136                                                                 iptr[0].val.a = (functionptr) asm_builtin_lrem;
1137                                                                 isleafmethod = false;
1138                                                                 goto builtin2;
1139                                                                 }
1140
1141                                                 case ICMD_IADD:
1142                                                 case ICMD_ISUB:
1143                                                 case ICMD_IMUL:
1144
1145                                                 case ICMD_ISHL:
1146                                                 case ICMD_ISHR:
1147                                                 case ICMD_IUSHR:
1148                                                 case ICMD_IAND:
1149                                                 case ICMD_IOR:
1150                                                 case ICMD_IXOR:
1151                                                         COUNT(count_pcmd_op);
1152                                                         OP2_1(TYPE_INT);
1153                                                         break;
1154
1155                                                 case ICMD_LADD:
1156                                                 case ICMD_LSUB:
1157                                                 case ICMD_LMUL:
1158
1159                                                 case ICMD_LOR:
1160                                                 case ICMD_LAND:
1161                                                 case ICMD_LXOR:
1162                                                         COUNT(count_pcmd_op);
1163                                                         OP2_1(TYPE_LNG);
1164                                                         break;
1165
1166                                                 case ICMD_LSHL:
1167                                                 case ICMD_LSHR:
1168                                                 case ICMD_LUSHR:
1169                                                         COUNT(count_pcmd_op);
1170                                                         OP2IT_1(TYPE_LNG);
1171                                                         break;
1172
1173                                                 case ICMD_FADD:
1174                                                 case ICMD_FSUB:
1175                                                 case ICMD_FMUL:
1176                                                 case ICMD_FDIV:
1177                                                 case ICMD_FREM:
1178                                                         COUNT(count_pcmd_op);
1179                                                         OP2_1(TYPE_FLT);
1180                                                         break;
1181
1182                                                 case ICMD_DADD:
1183                                                 case ICMD_DSUB:
1184                                                 case ICMD_DMUL:
1185                                                 case ICMD_DDIV:
1186                                                 case ICMD_DREM:
1187                                                         COUNT(count_pcmd_op);
1188                                                         OP2_1(TYPE_DBL);
1189                                                         break;
1190
1191                                                 case ICMD_LCMP:
1192                                                         COUNT(count_pcmd_op);
1193                                                         if ((len > 0) && (iptr[1].val.i == 0)) {
1194                                                                 switch (iptr[1].opc) {
1195                                                                         case ICMD_IFEQ:
1196                                                                                 iptr[0].opc = ICMD_IF_LCMPEQ;
1197 icmd_lcmp_if_tail:
1198                                                                                 iptr[0].op1 = iptr[1].op1;
1199                                                                                 len--;
1200                                                                                 bptr->icount--;
1201                                                                                 /* iptr[1].opc = ICMD_NOP; */
1202                                                                                 OP2_0(TYPE_LNG);
1203                                                                                 tbptr = block + block_index[iptr->op1];
1204                                                                                 MARKREACHED(tbptr, copy);
1205                                                                                 COUNT(count_pcmd_bra);
1206                                                                                 break;
1207                                                                         case ICMD_IFNE:
1208                                                                                 iptr[0].opc = ICMD_IF_LCMPNE;
1209                                                                                 goto icmd_lcmp_if_tail;
1210                                                                         case ICMD_IFLT:
1211                                                                                 iptr[0].opc = ICMD_IF_LCMPLT;
1212                                                                                 goto icmd_lcmp_if_tail;
1213                                                                         case ICMD_IFGT:
1214                                                                                 iptr[0].opc = ICMD_IF_LCMPGT;
1215                                                                                 goto icmd_lcmp_if_tail;
1216                                                                         case ICMD_IFLE:
1217                                                                                 iptr[0].opc = ICMD_IF_LCMPLE;
1218                                                                                 goto icmd_lcmp_if_tail;
1219                                                                         case ICMD_IFGE:
1220                                                                                 iptr[0].opc = ICMD_IF_LCMPGE;
1221                                                                                 goto icmd_lcmp_if_tail;
1222                                                                         default:
1223                                                                                 OPTT2_1(TYPE_LNG, TYPE_INT);
1224                                                                         }
1225                                                                 }
1226                                                         else
1227                                                                 OPTT2_1(TYPE_LNG, TYPE_INT);
1228                                                         break;
1229                                                 case ICMD_FCMPL:
1230                                                 case ICMD_FCMPG:
1231                                                         COUNT(count_pcmd_op);
1232                                                         OPTT2_1(TYPE_FLT, TYPE_INT);
1233                                                         break;
1234                                                 case ICMD_DCMPL:
1235                                                 case ICMD_DCMPG:
1236                                                         COUNT(count_pcmd_op);
1237                                                         OPTT2_1(TYPE_DBL, TYPE_INT);
1238                                                         break;
1239
1240                                                 /* pop 1 push 1 */
1241
1242                                                 case ICMD_INEG:
1243                                                 case ICMD_INT2BYTE:
1244                                                 case ICMD_INT2CHAR:
1245                                                 case ICMD_INT2SHORT:
1246                                                         COUNT(count_pcmd_op);
1247                                                         OP1_1(TYPE_INT, TYPE_INT);
1248                                                         break;
1249                                                 case ICMD_LNEG:
1250                                                         COUNT(count_pcmd_op);
1251                                                         OP1_1(TYPE_LNG, TYPE_LNG);
1252                                                         break;
1253                                                 case ICMD_FNEG:
1254                                                         COUNT(count_pcmd_op);
1255                                                         OP1_1(TYPE_FLT, TYPE_FLT);
1256                                                         break;
1257                                                 case ICMD_DNEG:
1258                                                         COUNT(count_pcmd_op);
1259                                                         OP1_1(TYPE_DBL, TYPE_DBL);
1260                                                         break;
1261
1262                                                 case ICMD_I2L:
1263                                                         COUNT(count_pcmd_op);
1264                                                         OP1_1(TYPE_INT, TYPE_LNG);
1265                                                         break;
1266                                                 case ICMD_I2F:
1267                                                         COUNT(count_pcmd_op);
1268                                                         OP1_1(TYPE_INT, TYPE_FLT);
1269                                                         break;
1270                                                 case ICMD_I2D:
1271                                                         COUNT(count_pcmd_op);
1272                                                         OP1_1(TYPE_INT, TYPE_DBL);
1273                                                         break;
1274                                                 case ICMD_L2I:
1275                                                         COUNT(count_pcmd_op);
1276                                                         OP1_1(TYPE_LNG, TYPE_INT);
1277                                                         break;
1278                                                 case ICMD_L2F:
1279                                                         COUNT(count_pcmd_op);
1280                                                         OP1_1(TYPE_LNG, TYPE_FLT);
1281                                                         break;
1282                                                 case ICMD_L2D:
1283                                                         COUNT(count_pcmd_op);
1284                                                         OP1_1(TYPE_LNG, TYPE_DBL);
1285                                                         break;
1286                                                 case ICMD_F2I:
1287                                                         COUNT(count_pcmd_op);
1288                                                         OP1_1(TYPE_FLT, TYPE_INT);
1289                                                         break;
1290                                                 case ICMD_F2L:
1291                                                         COUNT(count_pcmd_op);
1292                                                         OP1_1(TYPE_FLT, TYPE_LNG);
1293                                                         break;
1294                                                 case ICMD_F2D:
1295                                                         COUNT(count_pcmd_op);
1296                                                         OP1_1(TYPE_FLT, TYPE_DBL);
1297                                                         break;
1298                                                 case ICMD_D2I:
1299                                                         COUNT(count_pcmd_op);
1300                                                         OP1_1(TYPE_DBL, TYPE_INT);
1301                                                         break;
1302                                                 case ICMD_D2L:
1303                                                         COUNT(count_pcmd_op);
1304                                                         OP1_1(TYPE_DBL, TYPE_LNG);
1305                                                         break;
1306                                                 case ICMD_D2F:
1307                                                         COUNT(count_pcmd_op);
1308                                                         OP1_1(TYPE_DBL, TYPE_FLT);
1309                                                         break;
1310
1311                                                 case ICMD_CHECKCAST:
1312                                                         OP1_1(TYPE_ADR, TYPE_ADR);
1313                                                         break;
1314
1315                                                 case ICMD_ARRAYLENGTH:
1316                                                 case ICMD_INSTANCEOF:
1317                                                         OP1_1(TYPE_ADR, TYPE_INT);
1318                                                         break;
1319
1320                                                 case ICMD_NEWARRAY:
1321                                                 case ICMD_ANEWARRAY:
1322                                                         OP1_1(TYPE_INT, TYPE_ADR);
1323                                                         break;
1324
1325                                                 case ICMD_GETFIELD:
1326                                                         COUNT(count_check_null);
1327                                                         COUNT(count_pcmd_mem);
1328                                                         OP1_1(TYPE_ADR, iptr->op1);
1329                                                         break;
1330
1331                                                 /* pop 0 push 1 */
1332
1333                                                 case ICMD_GETSTATIC:
1334                                                         COUNT(count_pcmd_mem);
1335                                                         OP0_1(iptr->op1);
1336                                                         break;
1337
1338                                                 case ICMD_NEW:
1339                                                         OP0_1(TYPE_ADR);
1340                                                         break;
1341
1342                                                 case ICMD_JSR:
1343                                                         OP0_1(TYPE_ADR);
1344                                                         tbptr = block + block_index[iptr->op1];
1345                                                         tbptr->type=BBTYPE_SBR;
1346                                                         MARKREACHED(tbptr, copy);
1347                                                         OP1_0ANY;
1348                                                         break;
1349
1350                                                 /* pop many push any */
1351
1352                                                 case ICMD_INVOKEVIRTUAL:
1353                                                 case ICMD_INVOKESPECIAL:
1354                                                 case ICMD_INVOKEINTERFACE:
1355                                                 case ICMD_INVOKESTATIC:
1356                                                         COUNT(count_pcmd_met);
1357                                                         {
1358                                                         methodinfo *m = iptr->val.a;
1359                                                         if (m->flags & ACC_STATIC)
1360                                                                 {COUNT(count_check_null);}
1361                                                         i = iptr->op1;
1362                                                         if (i > arguments_num)
1363                                                                 arguments_num = i;
1364                                                         copy = curstack;
1365                                                         while (--i >= 0) {
1366                                                                 if (! (copy->flags & SAVEDVAR)) {
1367                                                                         copy->varkind = ARGVAR;
1368                                                                         copy->varnum = i;
1369                                                                         }
1370                                                                 copy = copy->prev;
1371                                                                 }
1372                                                         while (copy) {
1373                                                                 copy->flags |= SAVEDVAR;
1374                                                                 copy = copy->prev;
1375                                                                 }
1376                                                         i = iptr->op1;
1377                                                         POPMANY(i);
1378                                                         if (m->returntype != TYPE_VOID) {
1379                                                                 OP0_1(m->returntype);
1380                                                                 }
1381                                                         break;
1382                                                         }
1383
1384                                                 case ICMD_BUILTIN3:
1385                                                         if (! (curstack->flags & SAVEDVAR)) {
1386                                                                 curstack->varkind = ARGVAR;
1387                                                                 curstack->varnum = 2;
1388                                                                 }
1389                                                         OP1_0ANY;
1390                                                 case ICMD_BUILTIN2:
1391 builtin2:
1392                                                         if (! (curstack->flags & SAVEDVAR)) {
1393                                                                 curstack->varkind = ARGVAR;
1394                                                                 curstack->varnum = 1;
1395                                                                 }
1396                                                         OP1_0ANY;
1397                                                 case ICMD_BUILTIN1:
1398                                                         if (! (curstack->flags & SAVEDVAR)) {
1399                                                                 curstack->varkind = ARGVAR;
1400                                                                 curstack->varnum = 0;
1401                                                                 }
1402                                                         OP1_0ANY;
1403                                                         copy = curstack;
1404                                                         while (copy) {
1405                                                                 copy->flags |= SAVEDVAR;
1406                                                                 copy = copy->prev;
1407                                                                 }
1408                                                         if (iptr->op1 != TYPE_VOID)
1409                                                                 OP0_1(iptr->op1);
1410                                                         break;
1411
1412                                                 case ICMD_MULTIANEWARRAY:
1413                                                         i = iptr->op1;
1414                                                         if ((i + intreg_argnum) > arguments_num)
1415                                                                 arguments_num = i + intreg_argnum;
1416                                                         copy = curstack;
1417                                                         while (--i >= 0) {
1418                                                                 if (! (copy->flags & SAVEDVAR)) {
1419                                                                         copy->varkind = ARGVAR;
1420                                                                         copy->varnum = i + intreg_argnum;
1421                                                                         }
1422                                                                 copy = copy->prev;
1423                                                                 }
1424                                                         while (copy) {
1425                                                                 copy->flags |= SAVEDVAR;
1426                                                                 copy = copy->prev;
1427                                                                 }
1428                                                         i = iptr->op1;
1429                                                         POPMANY(i);
1430                                                         OP0_1(TYPE_ADR);
1431                                                         break;
1432
1433                                                 default:
1434                                                         printf("ICMD %d at %d\n", iptr->opc, (int)(iptr-instr));
1435                                                         panic("Missing ICMD code during stack analysis");
1436                                                 } /* switch */
1437                                         iptr++;
1438                                         } /* while instructions */
1439                                 bptr->outstack = curstack;
1440                                 bptr->outdepth = stackdepth;
1441                                 BBEND(curstack, i);
1442                                 } /* if */
1443                         else
1444                                 superblockend = true;
1445                         bptr++;
1446                 } /* while blocks */
1447         } while (repeat && ! deadcode);
1448
1449 #ifdef STATISTICS
1450         if (block_count > count_max_basic_blocks)
1451                 count_max_basic_blocks = block_count;
1452         count_basic_blocks += block_count;
1453         if (instr_count > count_max_javainstr)
1454                 count_max_javainstr = instr_count;
1455         count_javainstr += instr_count;
1456         if (stack_count > count_upper_bound_new_stack)
1457                 count_upper_bound_new_stack = stack_count;
1458         if ((new - stack) > count_max_new_stack)
1459                 count_max_new_stack = (new - stack);
1460
1461         b_count = block_count;
1462         bptr = block;
1463         while (--b_count >= 0) {
1464                 if (bptr->flags > BBREACHED) {
1465                         if (bptr->indepth >= 10)
1466                                 count_block_stack[10]++;
1467                         else
1468                                 count_block_stack[bptr->indepth]++;
1469                         len = bptr->icount;
1470                         if (len <= 10)
1471                                 count_block_size_distribution[len - 1]++;
1472                         else if (len <= 12)
1473                                 count_block_size_distribution[10]++;
1474                         else if (len <= 14)
1475                                 count_block_size_distribution[11]++;
1476                         else if (len <= 16)
1477                                 count_block_size_distribution[12]++;
1478                         else if (len <= 18)
1479                                 count_block_size_distribution[13]++;
1480                         else if (len <= 20)
1481                                 count_block_size_distribution[14]++;
1482                         else if (len <= 25)
1483                                 count_block_size_distribution[15]++;
1484                         else if (len <= 30)
1485                                 count_block_size_distribution[16]++;
1486                         else
1487                                 count_block_size_distribution[17]++;
1488                         }
1489                 bptr++;
1490                 }
1491
1492         if (loops == 1)
1493                 count_analyse_iterations[0]++;
1494         else if (loops == 2)
1495                 count_analyse_iterations[1]++;
1496         else if (loops == 3)
1497                 count_analyse_iterations[2]++;
1498         else if (loops == 4)
1499                 count_analyse_iterations[3]++;
1500         else
1501                 count_analyse_iterations[4]++;
1502
1503         if (block_count <= 5)
1504                 count_method_bb_distribution[0]++;
1505         else if (block_count <= 10)
1506                 count_method_bb_distribution[1]++;
1507         else if (block_count <= 15)
1508                 count_method_bb_distribution[2]++;
1509         else if (block_count <= 20)
1510                 count_method_bb_distribution[3]++;
1511         else if (block_count <= 30)
1512                 count_method_bb_distribution[4]++;
1513         else if (block_count <= 40)
1514                 count_method_bb_distribution[5]++;
1515         else if (block_count <= 50)
1516                 count_method_bb_distribution[6]++;
1517         else if (block_count <= 75)
1518                 count_method_bb_distribution[7]++;
1519         else
1520                 count_method_bb_distribution[8]++;
1521 #endif
1522 }
1523
1524
1525 static void print_stack(stackptr s) {
1526         int i, j;
1527         stackptr t;
1528
1529         i = maxstack;
1530         t = s;
1531
1532         while (t) {
1533                 i--;
1534                 t = t->prev;
1535                 }
1536         j = maxstack - i;
1537         while (--i >= 0)
1538                 printf("    ");
1539         while (s) {
1540                 j--;
1541                 if (s->flags & SAVEDVAR)
1542                         switch (s->varkind) {
1543                                 case TEMPVAR:
1544                                         if (s->flags & INMEMORY)
1545                                                 printf(" M%02d", s->regoff);
1546                                         else if ((s->type == TYPE_FLT) || (s->type == TYPE_DBL))
1547                                                 printf(" F%02d", s->regoff);
1548                                         else
1549                                                 printf(" %3s", regs[s->regoff]);
1550                                         break;
1551                                 case STACKVAR:
1552                                         printf(" I%02d", s->varnum);
1553                                         break;
1554                                 case LOCALVAR:
1555                                         printf(" L%02d", s->varnum);
1556                                         break;
1557                                 case ARGVAR:
1558                                         printf(" A%02d", s->varnum);
1559                                         break;
1560                                 default:
1561                                         printf(" !%02d", j);
1562                                 }
1563                 else
1564                         switch (s->varkind) {
1565                                 case TEMPVAR:
1566                                         if (s->flags & INMEMORY)
1567                                                 printf(" m%02d", s->regoff);
1568                                         else if ((s->type == TYPE_FLT) || (s->type == TYPE_DBL))
1569                                                 printf(" f%02d", s->regoff);
1570                                         else
1571                                                 printf(" %3s", regs[s->regoff]);
1572                                         break;
1573                                 case STACKVAR:
1574                                         printf(" i%02d", s->varnum);
1575                                         break;
1576                                 case LOCALVAR:
1577                                         printf(" l%02d", s->varnum);
1578                                         break;
1579                                 case ARGVAR:
1580                                         printf(" a%02d", s->varnum);
1581                                         break;
1582                                 default:
1583                                         printf(" ?%02d", j);
1584                                 }
1585                 s = s->prev;
1586                 }
1587 }
1588
1589
1590 #if 0
1591 static void print_reg(stackptr s) {
1592         if (s) {
1593                 if (s->flags & SAVEDVAR)
1594                         switch (s->varkind) {
1595                                 case TEMPVAR:
1596                                         if (s->flags & INMEMORY)
1597                                                 printf(" tm%02d", s->regoff);
1598                                         else
1599                                                 printf(" tr%02d", s->regoff);
1600                                         break;
1601                                 case STACKVAR:
1602                                         printf(" s %02d", s->varnum);
1603                                         break;
1604                                 case LOCALVAR:
1605                                         printf(" l %02d", s->varnum);
1606                                         break;
1607                                 case ARGVAR:
1608                                         printf(" a %02d", s->varnum);
1609                                         break;
1610                                 default:
1611                                         printf(" ! %02d", s->varnum);
1612                                 }
1613                 else
1614                         switch (s->varkind) {
1615                                 case TEMPVAR:
1616                                         if (s->flags & INMEMORY)
1617                                                 printf(" Tm%02d", s->regoff);
1618                                         else
1619                                                 printf(" Tr%02d", s->regoff);
1620                                         break;
1621                                 case STACKVAR:
1622                                         printf(" S %02d", s->varnum);
1623                                         break;
1624                                 case LOCALVAR:
1625                                         printf(" L %02d", s->varnum);
1626                                         break;
1627                                 case ARGVAR:
1628                                         printf(" A %02d", s->varnum);
1629                                         break;
1630                                 default:
1631                                         printf(" ? %02d", s->varnum);
1632                                 }
1633                 }
1634         else
1635                 printf("     ");
1636
1637 }
1638 #endif
1639
1640
1641 static char *builtin_name(functionptr bptr)
1642 {
1643         builtin_descriptor *bdesc = builtin_desc;
1644         while ((bdesc->bptr != NULL) && (bdesc->bptr != bptr))
1645                 bdesc++;
1646         return bdesc->name;
1647 }
1648
1649
1650 static char *jit_type[] = {
1651         "int",
1652         "lng",
1653         "flt",
1654         "dbl",
1655         "adr"
1656 };
1657
1658
1659 static void show_icmd_method()
1660 {
1661         int b, i, j, last;
1662         int deadcode;
1663         s4  *s4ptr;
1664         instruction *iptr;
1665
1666         printf("\n");
1667         unicode_fprint(stdout, class->name);
1668         printf(".");
1669         unicode_fprint(stdout, method->name);
1670         printf(" ");
1671         unicode_fprint(stdout, method->descriptor);
1672         printf ("\n\nMax locals: %d\n", (int) maxlocals);
1673         printf ("Max stack:  %d\n", (int) maxstack);
1674
1675         printf ("Exceptions:\n");
1676         for (i = 0; i < exceptiontablelength; i++) {
1677                 printf("    L%03d ... ", block_index[extable[i].startpc]);
1678                 printf("L%03d = ", block_index[extable[i].endpc]);
1679                 printf("L%03d\n", block_index[extable[i].handlerpc]);
1680                 }
1681
1682         printf ("Local Table:\n");
1683         for (i = 0; i < maxlocals; i++) {
1684                 printf("   %3d: ", i);
1685                 for (j = TYPE_INT; j <= TYPE_ADR; j++)
1686                         if (locals[i][j].type >= 0) {
1687                                 printf("   (%s) ", jit_type[j]);
1688                                 if (locals[i][j].flags & INMEMORY)
1689                                         printf("m%2d", locals[i][j].regoff);
1690                                 else if ((j == TYPE_FLT) || (j == TYPE_DBL))
1691                                         printf("f%02d", locals[i][j].regoff);
1692                                 else
1693                                         printf("%3s", regs[locals[i][j].regoff]);
1694                                 }
1695                 printf("\n");
1696                 }
1697         printf("\n");
1698
1699         printf ("Interface Table:\n");
1700         for (i = 0; i < maxstack; i++) {
1701                 if ((interfaces[i][0].type >= 0) || (interfaces[i][1].type >= 0) ||
1702                     (interfaces[i][2].type >= 0) || (interfaces[i][3].type >= 0) ||
1703                     (interfaces[i][4].type >= 0)) {
1704                         printf("   %3d: ", i);
1705                         for (j = TYPE_INT; j <= TYPE_ADR; j++)
1706                                 if (interfaces[i][j].type >= 0) {
1707                                         printf("   (%s) ", jit_type[j]);
1708                                         if (interfaces[i][j].flags & SAVEDVAR) {
1709                                                 if (interfaces[i][j].flags & INMEMORY)
1710                                                         printf("M%2d", interfaces[i][j].regoff);
1711                                                 else if ((j == TYPE_FLT) || (j == TYPE_DBL))
1712                                                         printf("F%02d", interfaces[i][j].regoff);
1713                                                 else
1714                                                         printf("%3s", regs[interfaces[i][j].regoff]);
1715                                                 }
1716                                         else {
1717                                                 if (interfaces[i][j].flags & INMEMORY)
1718                                                         printf("m%2d", interfaces[i][j].regoff);
1719                                                 else if ((j == TYPE_FLT) || (j == TYPE_DBL))
1720                                                         printf("f%02d", interfaces[i][j].regoff);
1721                                                 else
1722                                                         printf("%3s", regs[interfaces[i][j].regoff]);
1723                                                 }
1724                                         }
1725                         printf("\n");
1726                         }
1727                 }
1728         printf("\n");
1729
1730         if (showdisassemble) {
1731                 s4ptr = (s4 *) (method->mcode + dseglen);
1732                 for (i = 0; i < block[0].mpc; i += 4, s4ptr++) {
1733                         disassinstr(*s4ptr, i);
1734                         }
1735                 printf("\n");
1736                 }
1737
1738         for (b = 0; b < block_count; b++)
1739                 if (block[b].flags != BBDELETED) {
1740                 deadcode = block[b].flags <= BBREACHED;
1741                 printf("[");
1742                 if (deadcode)
1743                         for (j = maxstack; j > 0; j--)
1744                                 printf(" ?  ");
1745                 else
1746                         print_stack(block[b].instack);
1747                 printf("] L%03d(%d):\n", b, block[b].pre_count);
1748                 iptr = block[b].iinstr;
1749                 i = iptr - instr;
1750                 for (last = i + block[b].icount; i < last; i++, iptr++) {
1751                         printf("[");
1752                         if (deadcode) {
1753                                 for (j = maxstack; j > 0; j--)
1754                                         printf(" ?  ");
1755                                 }
1756                         else
1757                                 print_stack(iptr->dst);
1758                         printf("]     %4d  %s", i, icmd_names[iptr->opc]);
1759                         switch ((int) iptr->opc) {
1760                                 case ICMD_IADDCONST:
1761                                 case ICMD_ISUBCONST:
1762                                 case ICMD_IMULCONST:
1763                                 case ICMD_IDIVPOW2:
1764                                 case ICMD_IREMPOW2:
1765                                 case ICMD_IREM0X10001:
1766                                 case ICMD_IANDCONST:
1767                                 case ICMD_IORCONST:
1768                                 case ICMD_IXORCONST:
1769                                 case ICMD_ISHLCONST:
1770                                 case ICMD_ISHRCONST:
1771                                 case ICMD_IUSHRCONST:
1772                                 case ICMD_ICONST:
1773                                 case ICMD_ELSE_ICONST:
1774                                 case ICMD_IFEQ_ICONST:
1775                                 case ICMD_IFNE_ICONST:
1776                                 case ICMD_IFLT_ICONST:
1777                                 case ICMD_IFGE_ICONST:
1778                                 case ICMD_IFGT_ICONST:
1779                                 case ICMD_IFLE_ICONST:
1780                                         printf(" %d", iptr->val.i);
1781                                         break;
1782                                 case ICMD_LADDCONST:
1783                                 case ICMD_LSUBCONST:
1784                                 case ICMD_LMULCONST:
1785                                 case ICMD_LDIVPOW2:
1786                                 case ICMD_LREMPOW2:
1787                                 case ICMD_LANDCONST:
1788                                 case ICMD_LORCONST:
1789                                 case ICMD_LXORCONST:
1790                                 case ICMD_LSHLCONST:
1791                                 case ICMD_LSHRCONST:
1792                                 case ICMD_LUSHRCONST:
1793                                 case ICMD_LCONST:
1794                                         printf(" %ld", iptr->val.l);
1795                                         break;
1796                                 case ICMD_FCONST:
1797                                         printf(" %f", iptr->val.f);
1798                                         break;
1799                                 case ICMD_DCONST:
1800                                         printf(" %f", iptr->val.d);
1801                                         break;
1802                                 case ICMD_ACONST:
1803                                         printf(" %p", iptr->val.a);
1804                                         break;
1805                                 case ICMD_GETFIELD:
1806                                 case ICMD_PUTFIELD:
1807                                         printf(" %d,", ((fieldinfo *) iptr->val.a)->offset);
1808                                 case ICMD_PUTSTATIC:
1809                                 case ICMD_GETSTATIC:
1810                                         printf(" ");
1811                                         unicode_fprint(stdout,
1812                                                         ((fieldinfo *) iptr->val.a)->name);
1813                                         break;
1814                                 case ICMD_IINC:
1815                                         printf(" %d + %d", iptr->op1, iptr->val.i);
1816                                         break;
1817                                 case ICMD_RET:
1818                                 case ICMD_ILOAD:
1819                                 case ICMD_LLOAD:
1820                                 case ICMD_FLOAD:
1821                                 case ICMD_DLOAD:
1822                                 case ICMD_ALOAD:
1823                                 case ICMD_ISTORE:
1824                                 case ICMD_LSTORE:
1825                                 case ICMD_FSTORE:
1826                                 case ICMD_DSTORE:
1827                                 case ICMD_ASTORE:
1828                                         printf(" %d", iptr->op1);
1829                                         break;
1830                                 case ICMD_NEW:
1831                                         printf(" ");
1832                                         unicode_fprint(stdout,
1833                                                        ((classinfo *) iptr->val.a)->name);
1834                                         break;
1835                                 case ICMD_NEWARRAY:
1836                                         switch (iptr->op1) {
1837                                                 case 4:
1838                                                         printf(" boolean");
1839                                                         break;
1840                                                 case 5:
1841                                                         printf(" char");
1842                                                         break;
1843                                                 case 6:
1844                                                         printf(" float");
1845                                                         break;
1846                                                 case 7:
1847                                                         printf(" double");
1848                                                         break;
1849                                                 case 8:
1850                                                         printf(" byte");
1851                                                         break;
1852                                                 case 9:
1853                                                         printf(" short");
1854                                                         break;
1855                                                 case 10:
1856                                                         printf(" int");
1857                                                         break;
1858                                                 case 11:
1859                                                         printf(" long");
1860                                                         break;
1861                                                 }
1862                                         break;
1863                                 case ICMD_ANEWARRAY:
1864                                         if (iptr->op1) {
1865                                                 printf(" ");
1866                                                 unicode_fprint(stdout,
1867                                                                ((classinfo *) iptr->val.a)->name);
1868                                                 }
1869                                         break;
1870                                 case ICMD_CHECKCAST:
1871                                 case ICMD_INSTANCEOF:
1872                                         if (iptr->op1) {
1873                                                 classinfo *c = iptr->val.a;
1874                                                 if (c->flags & ACC_INTERFACE)
1875                                                         printf(" (INTERFACE) ");
1876                                                 else
1877                                                         printf(" (CLASS,%3d) ", c->vftbl->diffval);
1878                                                 unicode_fprint(stdout, c->name);
1879                                                 }
1880                                         break;
1881                                 case ICMD_BUILTIN3:
1882                                 case ICMD_BUILTIN2:
1883                                 case ICMD_BUILTIN1:
1884                                         printf(" %s", builtin_name((functionptr) iptr->val.a));
1885                                         break;
1886                                 case ICMD_INVOKEVIRTUAL:
1887                                 case ICMD_INVOKESPECIAL:
1888                                 case ICMD_INVOKESTATIC:
1889                                 case ICMD_INVOKEINTERFACE:
1890                                         printf(" ");
1891                                         unicode_fprint(stdout,
1892                                                        ((methodinfo *) iptr->val.a)->class->name);
1893                                         printf(".");
1894                                         unicode_fprint(stdout,
1895                                                        ((methodinfo *) iptr->val.a)->name);
1896                                         break;
1897                                 case ICMD_IFEQ:
1898                                 case ICMD_IFNE:
1899                                 case ICMD_IFLT:
1900                                 case ICMD_IFGE:
1901                                 case ICMD_IFGT:
1902                                 case ICMD_IFLE:
1903                                 case ICMD_IF_LEQ:
1904                                 case ICMD_IF_LNE:
1905                                 case ICMD_IF_LLT:
1906                                 case ICMD_IF_LGE:
1907                                 case ICMD_IF_LGT:
1908                                 case ICMD_IF_LLE:
1909                                         printf("(%d) L%03d", iptr->val.i, block_index[iptr->op1]);
1910                                         break;
1911                                 case ICMD_JSR:
1912                                 case ICMD_GOTO:
1913                                 case ICMD_IFNULL:
1914                                 case ICMD_IFNONNULL:
1915                                 case ICMD_IF_ICMPEQ:
1916                                 case ICMD_IF_ICMPNE:
1917                                 case ICMD_IF_ICMPLT:
1918                                 case ICMD_IF_ICMPGE:
1919                                 case ICMD_IF_ICMPGT:
1920                                 case ICMD_IF_ICMPLE:
1921                                 case ICMD_IF_LCMPEQ:
1922                                 case ICMD_IF_LCMPNE:
1923                                 case ICMD_IF_LCMPLT:
1924                                 case ICMD_IF_LCMPGE:
1925                                 case ICMD_IF_LCMPGT:
1926                                 case ICMD_IF_LCMPLE:
1927                                 case ICMD_IF_ACMPEQ:
1928                                 case ICMD_IF_ACMPNE:
1929                                         printf(" L%03d", block_index[iptr->op1]);
1930                                         break;
1931                                 case ICMD_TABLESWITCH:
1932                                         s4ptr = iptr->val.a;
1933                                         printf(" L%03d;", block_index[*s4ptr++]); /* default */
1934                                         j = *s4ptr++;                               /* low     */
1935                                         j = *s4ptr++ - j;                           /* high    */
1936                                         while (j >= 0) {
1937                                                 printf(" L%03d", block_index[*s4ptr++]);
1938                                                 j--;
1939                                                 }
1940                                         break;
1941                                 case ICMD_LOOKUPSWITCH:
1942                                         s4ptr = iptr->val.a;
1943                                         printf(" L%d", block_index[*s4ptr++]);   /* default */
1944                                         j = *s4ptr++;                               /* count   */
1945                                         while (--j >= 0) {
1946                                                 printf(" L%03d", block_index[s4ptr[1]]);
1947                                                 s4ptr += 2;
1948                                                 }
1949                                         break;
1950                                 }
1951                         printf("\n");
1952                         }
1953
1954                 if (showdisassemble && (!deadcode)) {
1955                         printf("\n");
1956                         i = block[b].mpc;
1957                         s4ptr = (s4 *) (method->mcode + dseglen + i);
1958                         for (; i < block[b + 1].mpc; i += 4, s4ptr++) {
1959                                 disassinstr(*s4ptr, i);
1960                                 }
1961                         printf("\n");
1962                         }
1963         }
1964         i = block[b].mpc;
1965         s4ptr = (s4 *) (method->mcode + dseglen + i);
1966         if (showdisassemble && (s4ptr < (s4 *) (method->mcode + method->mcodelength))) {
1967                 printf("\n");
1968                 for (; s4ptr < (s4 *) (method->mcode + method->mcodelength); i += 4, s4ptr++) {
1969                         disassinstr(*s4ptr, i);
1970                         }
1971                 printf("\n");
1972                 }
1973 }
1974
1975
1976 /*
1977  * These are local overrides for various environment variables in Emacs.
1978  * Please do not remove this and leave it at the end of the file, where
1979  * Emacs will automagically detect them.
1980  * ---------------------------------------------------------------------
1981  * Local variables:
1982  * mode: c
1983  * indent-tabs-mode: t
1984  * c-basic-offset: 4
1985  * tab-width: 4
1986  * End:
1987  */