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