jit/stack.c

   1 /* jit/stack.c *****************************************************************
   2
   3         Copyright (c) 1997 A. Krall, R. Grafl, M. Gschwind, M. Probst
   4
   5         See file COPYRIGHT for information on usage and disclaimer of warranties
   6
   7         Parser for JavaVM to intermediate code translation
   8
   9         Authors: Andreas  Krall      EMAIL: cacao@complang.tuwien.ac.at
  10
  11         Last Change: 1997/11/18
  12
  13 *******************************************************************************/
  14
  15 #ifdef STATISTICS
  16 #define COUNT(cnt) cnt++
  17 #else
  18 #define COUNT(cnt)
  19 #endif
  20
  21 #define STACKRESET {curstack=0;stackdepth=0;}
  22
  23 #define TYPEPANIC  {show_icmd_method();panic("Stack type mismatch");}
  24 #define CURKIND    curstack->varkind
  25 #define CURTYPE    curstack->type
  26
  27 #define NEWSTACK(s,v,n) {new->prev=curstack;new->type=s;new->flags=0;\
  28                         new->varkind=v;new->varnum=n;curstack=new;new++;}
  29 #define NEWSTACKn(s,n)  NEWSTACK(s,UNDEFVAR,n)
  30 #define NEWSTACK0(s)    NEWSTACK(s,UNDEFVAR,0)
  31 #define NEWXSTACK   {NEWSTACK(TYPE_ADR,STACKVAR,0);curstack=0;}
  32
  33 #define SETDST      {iptr->dst=curstack;}
  34 #define POP(s)      {if(s!=curstack->type){TYPEPANIC;}\
  35                      if(curstack->varkind==UNDEFVAR)curstack->varkind=TEMPVAR;\
  36                      curstack=curstack->prev;}
  37 #define POPANY      {if(curstack->varkind==UNDEFVAR)curstack->varkind=TEMPVAR;\
  38                      curstack=curstack->prev;}
  39 #define COPY(s,d)   {(d)->flags=0;(d)->type=(s)->type;\
  40                      (d)->varkind=(s)->varkind;(d)->varnum=(s)->varnum;}
  41
  42 #define PUSHCONST(s){NEWSTACKn(s,stackdepth);SETDST;stackdepth++;}
  43 #define LOAD(s,v,n) {NEWSTACK(s,v,n);SETDST;stackdepth++;}
  44 #define STORE(s)    {POP(s);SETDST;stackdepth--;}
  45 #define OP1_0(s)    {POP(s);SETDST;stackdepth--;}
  46 #define OP1_0ANY    {POPANY;SETDST;stackdepth--;}
  47 #define OP0_1(s)    {NEWSTACKn(s,stackdepth);SETDST;stackdepth++;}
  48 #define OP1_1(s,d)  {POP(s);NEWSTACKn(d,stackdepth-1);SETDST;}
  49 #define OP2_0(s)    {POP(s);POP(s);SETDST;stackdepth-=2;}
  50 #define OPTT2_0(t,b){POP(t);POP(b);SETDST;stackdepth-=2;}
  51 #define OP2_1(s)    {POP(s);POP(s);NEWSTACKn(s,stackdepth-2);SETDST;stackdepth--;}
  52 #define OP2IAT_1(s) {POP(TYPE_INT);POP(TYPE_ADR);NEWSTACKn(s,stackdepth-2);\
  53                      SETDST;stackdepth--;}
  54 #define OP2IT_1(s)  {POP(TYPE_INT);POP(s);NEWSTACKn(s,stackdepth-2);\
  55                      SETDST;stackdepth--;}
  56 #define OPTT2_1(s,d){POP(s);POP(s);NEWSTACKn(d,stackdepth-2);SETDST;stackdepth--;}
  57 #define OP2_2(s)    {POP(s);POP(s);NEWSTACKn(s,stackdepth-2);\
  58                      NEWSTACKn(s,stackdepth-1);SETDST;}
  59 #define OP3TIA_0(s) {POP(s);POP(TYPE_INT);POP(TYPE_ADR);SETDST;stackdepth-=3;}
  60 #define OP3_0(s)    {POP(s);POP(s);POP(s);SETDST;stackdepth-=3;}
  61 #define POPMANY(i)  {stackdepth-=i;while(--i>=0){POPANY;}SETDST;}
  62 #define DUP         {NEWSTACK(CURTYPE,CURKIND,curstack->varnum);SETDST;\
  63                     stackdepth++;}
  64 #define SWAP        {COPY(curstack,new);POPANY;COPY(curstack,new+1);POPANY;\
  65                     new[0].prev=curstack;new[1].prev=new;\
  66                     curstack=new+1;new+=2;SETDST;}
  67 #define DUP_X1      {COPY(curstack,new);COPY(curstack,new+2);POPANY;\
  68                     COPY(curstack,new+1);POPANY;new[0].prev=curstack;\
  69                     new[1].prev=new;new[2].prev=new+1;\
  70                     curstack=new+2;new+=3;SETDST;stackdepth++;}
  71 #define DUP2_X1     {COPY(curstack,new+1);COPY(curstack,new+4);POPANY;\
  72                     COPY(curstack,new);COPY(curstack,new+3);POPANY;\
  73                     COPY(curstack,new+2);POPANY;new[0].prev=curstack;\
  74                     new[1].prev=new;new[2].prev=new+1;\
  75                     new[3].prev=new+2;new[4].prev=new+3;\
  76                     curstack=new+4;new+=5;SETDST;stackdepth+=2;}
  77 #define DUP_X2      {COPY(curstack,new);COPY(curstack,new+3);POPANY;\
  78                     COPY(curstack,new+2);POPANY;COPY(curstack,new+1);POPANY;\
  79                     new[0].prev=curstack;new[1].prev=new;\
  80                     new[2].prev=new+1;new[3].prev=new+2;\
  81                     curstack=new+3;new+=4;SETDST;stackdepth++;}
  82 #define DUP2_X2     {COPY(curstack,new+1);COPY(curstack,new+5);POPANY;\
  83                     COPY(curstack,new);COPY(curstack,new+4);POPANY;\
  84                     COPY(curstack,new+3);POPANY;COPY(curstack,new+2);POPANY;\
  85                     new[0].prev=curstack;new[1].prev=new;\
  86                     new[2].prev=new+1;new[3].prev=new+2;\
  87                     new[4].prev=new+3;new[5].prev=new+4;\
  88                     curstack=new+5;new+=6;SETDST;stackdepth+=2;}
  89
  90 #define COPYCURSTACK(copy) {\
  91         int d;\
  92         stackptr s;\
  93         if(curstack){\
  94                 s=curstack;\
  95                 new+=stackdepth;\
  96                 d=stackdepth;\
  97                 copy=new;\
  98                 while(s){\
  99                         copy--;d--;\
 100                         copy->prev=copy-1;\
 101                         copy->type=s->type;\
 102                         copy->flags=0;\
 103                         copy->varkind=STACKVAR;\
 104                         copy->varnum=d;\
 105                         s=s->prev;\
 106                         }\
 107                 copy->prev=NULL;\
 108                 copy=new-1;\
 109                 }\
 110         else\
 111                 copy=NULL;\
 112 }
 113
 114
 115 #define BBEND(s,i){\
 116         i=stackdepth-1;\
 117         copy=s;\
 118         while(copy){\
 119                 if((copy->varkind==STACKVAR)&&(copy->varnum>i))\
 120                         copy->varkind=TEMPVAR;\
 121                 else {\
 122                         copy->varkind=STACKVAR;\
 123                         copy->varnum=i;\
 124                         }\
 125                 interfaces[i][copy->type].type = copy->type;\
 126                 interfaces[i][copy->type].flags |= copy->flags;\
 127                 i--;copy=copy->prev;\
 128                 }\
 129         i=bptr->indepth-1;\
 130         copy=bptr->instack;\
 131         while(copy){\
 132                 interfaces[i][copy->type].type = copy->type;\
 133                 if(copy->varkind==STACKVAR){\
 134                         if (copy->flags & SAVEDVAR)\
 135                                 interfaces[i][copy->type].flags |= SAVEDVAR;\
 136                         }\
 137                 i--;copy=copy->prev;\
 138                 }\
 139 }
 140
 141
 142 #define MARKREACHED(b,c) {\
 143         if(b->flags<0)\
 144                 {COPYCURSTACK(c);b->flags=0;b->instack=c;b->indepth=stackdepth;}\
 145         else {stackptr s=curstack;stackptr t=b->instack;\
 146                 if(b->indepth!=stackdepth)\
 147                         {show_icmd_method();panic("Stack depth mismatch");}\
 148                 while(s){if (s->type!=t->type)\
 149                                 TYPEPANIC\
 150                         s=s->prev;t=t->prev;\
 151                         }\
 152                 }\
 153 }
 154
 155
 156 static void show_icmd_method();
 157
 158 static void analyse_stack()
 159 {
 160         int b_count, b_index;
 161         int stackdepth;
 162         stackptr curstack, new, copy;
 163         int opcode, i, len, loops;
 164         int superblockend, repeat, deadcode;
 165         instruction *iptr = instr;
 166         basicblock *bptr, *tbptr;
 167         s4  *s4ptr;
 168
 169         arguments_num = 0;
 170         new = stack;
 171         loops = 0;
 172         block[0].flags = BBREACHED;
 173         block[0].instack = 0;
 174         block[0].indepth = 0;
 175
 176         for (i = 0; i < exceptiontablelength; i++) {
 177                 bptr = &block[block_index[extable[i].handlerpc]];
 178                 bptr->flags = BBREACHED;
 179                 bptr->type = BBTYPE_EXH;
 180                 bptr->instack = new;
 181                 bptr->indepth = 1;
 182                 bptr->pre_count = 10000;
 183                 STACKRESET;
 184                 NEWXSTACK;
 185                 }
 186
 187 #ifdef CONDITIONAL_LOADCONST
 188         b_count = block_count;
 189         bptr = block;
 190         while (--b_count >= 0) {
 191                 if (bptr->icount != 0) {
 192                         iptr = bptr->iinstr + bptr->icount - 1;
 193                         switch (iptr->opc) {
 194                                 case ICMD_RET:
 195                                 case ICMD_RETURN:
 196                                 case ICMD_IRETURN:
 197                                 case ICMD_LRETURN:
 198                                 case ICMD_FRETURN:
 199                                 case ICMD_DRETURN:
 200                                 case ICMD_ARETURN:
 201                                 case ICMD_ATHROW:
 202                                         break;
 203
 204                                 case ICMD_IFEQ:
 205                                 case ICMD_IFNE:
 206                                 case ICMD_IFLT:
 207                                 case ICMD_IFGE:
 208                                 case ICMD_IFGT:
 209                                 case ICMD_IFLE:
 210
 211                                 case ICMD_IFNULL:
 212                                 case ICMD_IFNONNULL:
 213
 214                                 case ICMD_IF_ICMPEQ:
 215                                 case ICMD_IF_ICMPNE:
 216                                 case ICMD_IF_ICMPLT:
 217                                 case ICMD_IF_ICMPGE:
 218                                 case ICMD_IF_ICMPGT:
 219                                 case ICMD_IF_ICMPLE:
 220
 221                                 case ICMD_IF_ACMPEQ:
 222                                 case ICMD_IF_ACMPNE:
 223                                         bptr[1].pre_count++;
 224                                 case ICMD_GOTO:
 225                                         block[block_index[iptr->op1]].pre_count++;
 226                                         break;
 227
 228                                 case ICMD_TABLESWITCH:
 229                                         s4ptr = iptr->val.a;
 230                                         block[block_index[*s4ptr++]].pre_count++;   /* default */
 231                                         i = *s4ptr++;                               /* low     */
 232                                         i = *s4ptr++ - i + 1;                       /* high    */
 233                                         while (--i >= 0) {
 234                                                 block[block_index[*s4ptr++]].pre_count++;
 235                                                 }
 236                                         break;
 237
 238                                 case ICMD_LOOKUPSWITCH:
 239                                         s4ptr = iptr->val.a;
 240                                         block[block_index[*s4ptr++]].pre_count++;   /* default */
 241                                         i = *s4ptr++;                               /* count   */
 242                                         while (--i >= 0) {
 243                                                 block[block_index[s4ptr[1]]].pre_count++;
 244                                                 s4ptr += 2;
 245                                                 }
 246                                         break;
 247                                 default:
 248                                         bptr[1].pre_count++;
 249                                         break;
 250                                 }
 251                         }
 252                 bptr++;
 253                 }
 254 #endif
 255
 256
 257         do {
 258                 loops++;
 259                 b_count = block_count;
 260                 bptr = block;
 261                 superblockend = true;
 262                 repeat = false;
 263                 STACKRESET;
 264                 deadcode = true;
 265                 while (--b_count >= 0) {
 266                         if (bptr->flags == BBDELETED) {
 267                                 /* do nothing */
 268                                 }
 269                         else if (superblockend && (bptr->flags < BBREACHED))
 270                                 repeat = true;
 271                         else if (bptr->flags <= BBREACHED) {
 272                                 if (superblockend)
 273                                         stackdepth = bptr->indepth;
 274                                 else if (bptr->flags < BBREACHED) {
 275                                         COPYCURSTACK(copy);
 276                                         bptr->instack = copy;
 277                                         bptr->indepth = stackdepth;
 278                                         }
 279                                 else if (bptr->indepth != stackdepth) {
 280                                         show_icmd_method();
 281                                         panic("Stack depth mismatch");
 282
 283                                         }
 284                                 curstack = bptr->instack;
 285                                 deadcode = false;
 286                                 superblockend = false;
 287                                 bptr->flags = BBFINISHED;
 288                                 len = bptr->icount;
 289                                 iptr = bptr->iinstr;
 290                                 b_index = bptr - block;
 291                                 while (--len >= 0)  {
 292                                         opcode = iptr->opc;
 293                                         switch (opcode) {
 294
 295                                                 /* pop 0 push 0 */
 296
 297                                                 case ICMD_NOP:
 298                                                 case ICMD_CHECKASIZE:
 299
 300                                                 case ICMD_IFEQ_ICONST:
 301                                                 case ICMD_IFNE_ICONST:
 302                                                 case ICMD_IFLT_ICONST:
 303                                                 case ICMD_IFGE_ICONST:
 304                                                 case ICMD_IFGT_ICONST:
 305                                                 case ICMD_IFLE_ICONST:
 306                                                 case ICMD_ELSE_ICONST:
 307                                                         SETDST;
 308                                                         break;
 309
 310                                                 case ICMD_RET:
 311                                                         locals[iptr->op1][TYPE_ADR].type = TYPE_ADR;
 312                                                 case ICMD_RETURN:
 313                                                         COUNT(count_pcmd_return);
 314                                                         SETDST;
 315                                                         superblockend = true;
 316                                                         break;
 317
 318                                                 /* pop 0 push 1 const */
 319
 320                                                 case ICMD_ICONST:
 321                                                         COUNT(count_pcmd_load);
 322                                                         if (len > 0) {
 323                                                                 switch (iptr[1].opc) {
 324                                                                         case ICMD_IADD:
 325                                                                                 iptr[0].opc = ICMD_IADDCONST;
 326 icmd_iconst_tail:
 327                                                                                 iptr[1].opc = ICMD_NOP;
 328                                                                                 OP1_1(TYPE_INT,TYPE_INT);
 329                                                                                 COUNT(count_pcmd_op);
 330                                                                                 break;
 331                                                                         case ICMD_ISUB:
 332                                                                                 iptr[0].opc = ICMD_ISUBCONST;
 333                                                                                 goto icmd_iconst_tail;
 334                                                                         case ICMD_IMUL:
 335                                                                                 iptr[0].opc = ICMD_IMULCONST;
 336                                                                                 goto icmd_iconst_tail;
 337                                                                         case ICMD_IDIV:
 338                                                                                 if (iptr[0].val.i == 0x00000002)
 339                                                                                         iptr[0].val.i = 1;
 340                                                                                 else if (iptr[0].val.i == 0x00000004)
 341                                                                                         iptr[0].val.i = 2;
 342                                                                                 else if (iptr[0].val.i == 0x00000008)
 343                                                                                         iptr[0].val.i = 3;
 344                                                                                 else if (iptr[0].val.i == 0x00000010)
 345                                                                                         iptr[0].val.i = 4;
 346                                                                                 else if (iptr[0].val.i == 0x00000020)
 347                                                                                         iptr[0].val.i = 5;
 348                                                                                 else if (iptr[0].val.i == 0x00000040)
 349                                                                                         iptr[0].val.i = 6;
 350                                                                                 else if (iptr[0].val.i == 0x00000080)
 351                                                                                         iptr[0].val.i = 7;
 352                                                                                 else if (iptr[0].val.i == 0x00000100)
 353                                                                                         iptr[0].val.i = 8;
 354                                                                                 else if (iptr[0].val.i == 0x00000200)
 355                                                                                         iptr[0].val.i = 9;
 356                                                                                 else if (iptr[0].val.i == 0x00000400)
 357                                                                                         iptr[0].val.i = 10;
 358                                                                                 else if (iptr[0].val.i == 0x00000800)
 359                                                                                         iptr[0].val.i = 11;
 360                                                                                 else if (iptr[0].val.i == 0x00001000)
 361                                                                                         iptr[0].val.i = 12;
 362                                                                                 else if (iptr[0].val.i == 0x00002000)
 363                                                                                         iptr[0].val.i = 13;
 364                                                                                 else if (iptr[0].val.i == 0x00004000)
 365                                                                                         iptr[0].val.i = 14;
 366                                                                                 else if (iptr[0].val.i == 0x00008000)
 367                                                                                         iptr[0].val.i = 15;
 368                                                                                 else if (iptr[0].val.i == 0x00010000)
 369                                                                                         iptr[0].val.i = 16;
 370                                                                                 else if (iptr[0].val.i == 0x00020000)
 371                                                                                         iptr[0].val.i = 17;
 372                                                                                 else if (iptr[0].val.i == 0x00040000)
 373                                                                                         iptr[0].val.i = 18;
 374                                                                                 else if (iptr[0].val.i == 0x00080000)
 375                                                                                         iptr[0].val.i = 19;
 376                                                                                 else if (iptr[0].val.i == 0x00100000)
 377                                                                                         iptr[0].val.i = 20;
 378                                                                                 else if (iptr[0].val.i == 0x00200000)
 379                                                                                         iptr[0].val.i = 21;
 380                                                                                 else if (iptr[0].val.i == 0x00400000)
 381                                                                                         iptr[0].val.i = 22;
 382                                                                                 else if (iptr[0].val.i == 0x00800000)
 383                                                                                         iptr[0].val.i = 23;
 384                                                                                 else if (iptr[0].val.i == 0x01000000)
 385                                                                                         iptr[0].val.i = 24;
 386                                                                                 else if (iptr[0].val.i == 0x02000000)
 387                                                                                         iptr[0].val.i = 25;
 388                                                                                 else if (iptr[0].val.i == 0x04000000)
 389                                                                                         iptr[0].val.i = 26;
 390                                                                                 else if (iptr[0].val.i == 0x08000000)
 391                                                                                         iptr[0].val.i = 27;
 392                                                                                 else if (iptr[0].val.i == 0x10000000)
 393                                                                                         iptr[0].val.i = 28;
 394                                                                                 else if (iptr[0].val.i == 0x20000000)
 395                                                                                         iptr[0].val.i = 29;
 396                                                                                 else if (iptr[0].val.i == 0x40000000)
 397                                                                                         iptr[0].val.i = 30;
 398                                                                                 else if (iptr[0].val.i == 0x80000000)
 399                                                                                         iptr[0].val.i = 31;
 400                                                                                 else {
 401                                                                                         PUSHCONST(TYPE_INT);
 402                                                                                         break;
 403                                                                                         }
 404                                                                                 iptr[0].opc = ICMD_IDIVPOW2;
 405                                                                                 goto icmd_iconst_tail;
 406                                                                         case ICMD_IREM:
 407                                                                                 if (iptr[0].val.i == 0x10001) {
 408                                                                                         iptr[0].opc = ICMD_IREM0X10001;
 409                                                                                         goto icmd_iconst_tail;
 410                                                                                         }
 411                                                                                 if ((iptr[0].val.i == 0x00000002) ||
 412                                                                                     (iptr[0].val.i == 0x00000004) ||
 413                                                                                     (iptr[0].val.i == 0x00000008) ||
 414                                                                                     (iptr[0].val.i == 0x00000010) ||
 415                                                                                     (iptr[0].val.i == 0x00000020) ||
 416                                                                                     (iptr[0].val.i == 0x00000040) ||
 417                                                                                     (iptr[0].val.i == 0x00000080) ||
 418                                                                                     (iptr[0].val.i == 0x00000100) ||
 419                                                                                     (iptr[0].val.i == 0x00000200) ||
 420                                                                                     (iptr[0].val.i == 0x00000400) ||
 421                                                                                     (iptr[0].val.i == 0x00000800) ||
 422                                                                                     (iptr[0].val.i == 0x00001000) ||
 423                                                                                     (iptr[0].val.i == 0x00002000) ||
 424                                                                                     (iptr[0].val.i == 0x00004000) ||
 425                                                                                     (iptr[0].val.i == 0x00008000) ||
 426                                                                                     (iptr[0].val.i == 0x00010000) ||
 427                                                                                     (iptr[0].val.i == 0x00020000) ||
 428                                                                                     (iptr[0].val.i == 0x00040000) ||
 429                                                                                     (iptr[0].val.i == 0x00080000) ||
 430                                                                                     (iptr[0].val.i == 0x00100000) ||
 431                                                                                     (iptr[0].val.i == 0x00200000) ||
 432                                                                                     (iptr[0].val.i == 0x00400000) ||
 433                                                                                     (iptr[0].val.i == 0x00800000) ||
 434                                                                                     (iptr[0].val.i == 0x01000000) ||
 435                                                                                     (iptr[0].val.i == 0x02000000) ||
 436                                                                                     (iptr[0].val.i == 0x04000000) ||
 437                                                                                     (iptr[0].val.i == 0x08000000) ||
 438                                                                                     (iptr[0].val.i == 0x10000000) ||
 439                                                                                     (iptr[0].val.i == 0x20000000) ||
 440                                                                                     (iptr[0].val.i == 0x40000000) ||
 441                                                                                     (iptr[0].val.i == 0x80000000)) {
 442                                                                                         iptr[0].opc = ICMD_IREMPOW2;
 443                                                                                         iptr[0].val.i -= 1;
 444                                                                                         goto icmd_iconst_tail;
 445                                                                                         }
 446                                                                                 PUSHCONST(TYPE_INT);
 447                                                                                 break;
 448                                                                         case ICMD_IAND:
 449                                                                                 iptr[0].opc = ICMD_IANDCONST;
 450                                                                                 goto icmd_iconst_tail;
 451                                                                         case ICMD_IOR:
 452                                                                                 iptr[0].opc = ICMD_IORCONST;
 453                                                                                 goto icmd_iconst_tail;
 454                                                                         case ICMD_IXOR:
 455                                                                                 iptr[0].opc = ICMD_IXORCONST;
 456                                                                                 goto icmd_iconst_tail;
 457                                                                         case ICMD_ISHL:
 458                                                                                 iptr[0].opc = ICMD_ISHLCONST;
 459                                                                                 goto icmd_iconst_tail;
 460                                                                         case ICMD_ISHR:
 461                                                                                 iptr[0].opc = ICMD_ISHRCONST;
 462                                                                                 goto icmd_iconst_tail;
 463                                                                         case ICMD_IUSHR:
 464                                                                                 iptr[0].opc = ICMD_IUSHRCONST;
 465                                                                                 goto icmd_iconst_tail;
 466                                                                         case ICMD_IF_ICMPEQ:
 467                                                                                 iptr[0].opc = ICMD_IFEQ;
 468 icmd_if_icmp_tail:
 469                                                                                 iptr[0].op1 = iptr[1].op1;
 470                                                                                 bptr->icount--;
 471                                                                                 len--;
 472                                                                                 /* iptr[1].opc = ICMD_NOP; */
 473                                                                                 OP1_0(TYPE_INT);
 474                                                                                 tbptr = block + block_index[iptr->op1];
 475                                                                                 MARKREACHED(tbptr, copy);
 476                                                                                 COUNT(count_pcmd_bra);
 477                                                                                 break;
 478                                                                         case ICMD_IF_ICMPLT:
 479                                                                                 iptr[0].opc = ICMD_IFLT;
 480                                                                                 goto icmd_if_icmp_tail;
 481                                                                         case ICMD_IF_ICMPLE:
 482                                                                                 iptr[0].opc = ICMD_IFLE;
 483                                                                                 goto icmd_if_icmp_tail;
 484                                                                         case ICMD_IF_ICMPNE:
 485                                                                                 iptr[0].opc = ICMD_IFNE;
 486                                                                                 goto icmd_if_icmp_tail;
 487                                                                         case ICMD_IF_ICMPGT:
 488                                                                                 iptr[0].opc = ICMD_IFGT;
 489                                                                                 goto icmd_if_icmp_tail;
 490                                                                         case ICMD_IF_ICMPGE:
 491                                                                                 iptr[0].opc = ICMD_IFGE;
 492                                                                                 goto icmd_if_icmp_tail;
 493                                                                         default:
 494                                                                                 PUSHCONST(TYPE_INT);
 495                                                                         }
 496                                                                 }
 497                                                         else
 498                                                                 PUSHCONST(TYPE_INT);
 499                                                         break;
 500                                                 case ICMD_LCONST:
 501                                                         COUNT(count_pcmd_load);
 502                                                         if (len > 0) {
 503                                                                 switch (iptr[1].opc) {
 504                                                                         case ICMD_LADD:
 505                                                                                 iptr[0].opc = ICMD_LADDCONST;
 506 icmd_lconst_tail:
 507                                                                                 iptr[1].opc = ICMD_NOP;
 508                                                                                 OP1_1(TYPE_LNG,TYPE_LNG);
 509                                                                                 COUNT(count_pcmd_op);
 510                                                                                 break;
 511                                                                         case ICMD_LSUB:
 512                                                                                 iptr[0].opc = ICMD_LSUBCONST;
 513                                                                                 goto icmd_lconst_tail;
 514                                                                         case ICMD_LMUL:
 515                                                                                 iptr[0].opc = ICMD_LMULCONST;
 516                                                                                 goto icmd_lconst_tail;
 517                                                                         case ICMD_LDIV:
 518                                                                                 if (iptr[0].val.l == 0x00000002)
 519                                                                                         iptr[0].val.l = 1;
 520                                                                                 else if (iptr[0].val.l == 0x00000004)
 521                                                                                         iptr[0].val.l = 2;
 522                                                                                 else if (iptr[0].val.l == 0x00000008)
 523                                                                                         iptr[0].val.l = 3;
 524                                                                                 else if (iptr[0].val.l == 0x00000010)
 525                                                                                         iptr[0].val.l = 4;
 526                                                                                 else if (iptr[0].val.l == 0x00000020)
 527                                                                                         iptr[0].val.l = 5;
 528                                                                                 else if (iptr[0].val.l == 0x00000040)
 529                                                                                         iptr[0].val.l = 6;
 530                                                                                 else if (iptr[0].val.l == 0x00000080)
 531                                                                                         iptr[0].val.l = 7;
 532                                                                                 else if (iptr[0].val.l == 0x00000100)
 533                                                                                         iptr[0].val.l = 8;
 534                                                                                 else if (iptr[0].val.l == 0x00000200)
 535                                                                                         iptr[0].val.l = 9;
 536                                                                                 else if (iptr[0].val.l == 0x00000400)
 537                                                                                         iptr[0].val.l = 10;
 538                                                                                 else if (iptr[0].val.l == 0x00000800)
 539                                                                                         iptr[0].val.l = 11;
 540                                                                                 else if (iptr[0].val.l == 0x00001000)
 541                                                                                         iptr[0].val.l = 12;
 542                                                                                 else if (iptr[0].val.l == 0x00002000)
 543                                                                                         iptr[0].val.l = 13;
 544                                                                                 else if (iptr[0].val.l == 0x00004000)
 545                                                                                         iptr[0].val.l = 14;
 546                                                                                 else if (iptr[0].val.l == 0x00008000)
 547                                                                                         iptr[0].val.l = 15;
 548                                                                                 else if (iptr[0].val.l == 0x00010000)
 549                                                                                         iptr[0].val.l = 16;
 550                                                                                 else if (iptr[0].val.l == 0x00020000)
 551                                                                                         iptr[0].val.l = 17;
 552                                                                                 else if (iptr[0].val.l == 0x00040000)
 553                                                                                         iptr[0].val.l = 18;
 554                                                                                 else if (iptr[0].val.l == 0x00080000)
 555                                                                                         iptr[0].val.l = 19;
 556                                                                                 else if (iptr[0].val.l == 0x00100000)
 557                                                                                         iptr[0].val.l = 20;
 558                                                                                 else if (iptr[0].val.l == 0x00200000)
 559                                                                                         iptr[0].val.l = 21;
 560                                                                                 else if (iptr[0].val.l == 0x00400000)
 561                                                                                         iptr[0].val.l = 22;
 562                                                                                 else if (iptr[0].val.l == 0x00800000)
 563                                                                                         iptr[0].val.l = 23;
 564                                                                                 else if (iptr[0].val.l == 0x01000000)
 565                                                                                         iptr[0].val.l = 24;
 566                                                                                 else if (iptr[0].val.l == 0x02000000)
 567                                                                                         iptr[0].val.l = 25;
 568                                                                                 else if (iptr[0].val.l == 0x04000000)
 569                                                                                         iptr[0].val.l = 26;
 570                                                                                 else if (iptr[0].val.l == 0x08000000)
 571                                                                                         iptr[0].val.l = 27;
 572                                                                                 else if (iptr[0].val.l == 0x10000000)
 573                                                                                         iptr[0].val.l = 28;
 574                                                                                 else if (iptr[0].val.l == 0x20000000)
 575                                                                                         iptr[0].val.l = 29;
 576                                                                                 else if (iptr[0].val.l == 0x40000000)
 577                                                                                         iptr[0].val.l = 30;
 578                                                                                 else if (iptr[0].val.l == 0x80000000)
 579                                                                                         iptr[0].val.l = 31;
 580                                                                                 else {
 581                                                                                         PUSHCONST(TYPE_LNG);
 582                                                                                         break;
 583                                                                                         }
 584                                                                                 iptr[0].opc = ICMD_LDIVPOW2;
 585                                                                                 goto icmd_lconst_tail;
 586                                                                         case ICMD_LREM:
 587                                                                                 if (iptr[0].val.l == 0x10001) {
 588                                                                                         iptr[0].opc = ICMD_LREM0X10001;
 589                                                                                         goto icmd_lconst_tail;
 590                                                                                         }
 591                                                                                 if ((iptr[0].val.l == 0x00000002) ||
 592                                                                                     (iptr[0].val.l == 0x00000004) ||
 593                                                                                     (iptr[0].val.l == 0x00000008) ||
 594                                                                                     (iptr[0].val.l == 0x00000010) ||
 595                                                                                     (iptr[0].val.l == 0x00000020) ||
 596                                                                                     (iptr[0].val.l == 0x00000040) ||
 597                                                                                     (iptr[0].val.l == 0x00000080) ||
 598                                                                                     (iptr[0].val.l == 0x00000100) ||
 599                                                                                     (iptr[0].val.l == 0x00000200) ||
 600                                                                                     (iptr[0].val.l == 0x00000400) ||
 601                                                                                     (iptr[0].val.l == 0x00000800) ||
 602                                                                                     (iptr[0].val.l == 0x00001000) ||
 603                                                                                     (iptr[0].val.l == 0x00002000) ||
 604                                                                                     (iptr[0].val.l == 0x00004000) ||
 605                                                                                     (iptr[0].val.l == 0x00008000) ||
 606                                                                                     (iptr[0].val.l == 0x00010000) ||
 607                                                                                     (iptr[0].val.l == 0x00020000) ||
 608                                                                                     (iptr[0].val.l == 0x00040000) ||
 609                                                                                     (iptr[0].val.l == 0x00080000) ||
 610                                                                                     (iptr[0].val.l == 0x00100000) ||
 611                                                                                     (iptr[0].val.l == 0x00200000) ||
 612                                                                                     (iptr[0].val.l == 0x00400000) ||
 613                                                                                     (iptr[0].val.l == 0x00800000) ||
 614                                                                                     (iptr[0].val.l == 0x01000000) ||
 615                                                                                     (iptr[0].val.l == 0x02000000) ||
 616                                                                                     (iptr[0].val.l == 0x04000000) ||
 617                                                                                     (iptr[0].val.l == 0x08000000) ||
 618                                                                                     (iptr[0].val.l == 0x10000000) ||
 619                                                                                     (iptr[0].val.l == 0x20000000) ||
 620                                                                                     (iptr[0].val.l == 0x40000000) ||
 621                                                                                     (iptr[0].val.l == 0x80000000)) {
 622                                                                                         iptr[0].opc = ICMD_LREMPOW2;
 623                                                                                         iptr[0].val.l -= 1;
 624                                                                                         goto icmd_lconst_tail;
 625                                                                                         }
 626                                                                                 PUSHCONST(TYPE_LNG);
 627                                                                                 break;
 628                                                                         case ICMD_LAND:
 629                                                                                 iptr[0].opc = ICMD_LANDCONST;
 630                                                                                 goto icmd_lconst_tail;
 631                                                                         case ICMD_LOR:
 632                                                                                 iptr[0].opc = ICMD_LORCONST;
 633                                                                                 goto icmd_lconst_tail;
 634                                                                         case ICMD_LXOR:
 635                                                                                 iptr[0].opc = ICMD_LXORCONST;
 636                                                                                 goto icmd_lconst_tail;
 637                                                                         case ICMD_LSHL:
 638                                                                                 iptr[0].opc = ICMD_LSHLCONST;
 639                                                                                 goto icmd_lconst_tail;
 640                                                                         case ICMD_LSHR:
 641                                                                                 iptr[0].opc = ICMD_LSHRCONST;
 642                                                                                 goto icmd_lconst_tail;
 643                                                                         case ICMD_LUSHR:
 644                                                                                 iptr[0].opc = ICMD_LUSHRCONST;
 645                                                                                 goto icmd_lconst_tail;
 646                                                                         case ICMD_LCMP:
 647                                                                                 if ((len > 1) && (iptr[2].val.i == 0)) {
 648                                                                                         switch (iptr[2].opc) {
 649                                                                                         case ICMD_IFEQ:
 650                                                                                                 iptr[0].opc = ICMD_IF_LEQ;
 651 icmd_lconst_lcmp_tail:
 652                                                                                                 iptr[0].op1 = iptr[2].op1;
 653                                                                                                 bptr->icount -= 2;
 654                                                                                                 len -= 2;
 655                                                                                                 /* iptr[1].opc = ICMD_NOP;
 656                                                                                                 iptr[2].opc = ICMD_NOP; */
 657                                                                                                 OP1_0(TYPE_LNG);
 658                                                                                                 tbptr = block + block_index[iptr->op1];
 659                                                                                                 MARKREACHED(tbptr, copy);
 660                                                                                                 COUNT(count_pcmd_bra);
 661                                                                                                 COUNT(count_pcmd_op);
 662                                                                                                 break;
 663                                                                                         case ICMD_IFNE:
 664                                                                                                 iptr[0].opc = ICMD_IF_LNE;
 665                                                                                                 goto icmd_lconst_lcmp_tail;
 666                                                                                         case ICMD_IFLT:
 667                                                                                                 iptr[0].opc = ICMD_IF_LLT;
 668                                                                                                 goto icmd_lconst_lcmp_tail;
 669                                                                                         case ICMD_IFGT:
 670                                                                                                 iptr[0].opc = ICMD_IF_LGT;
 671                                                                                                 goto icmd_lconst_lcmp_tail;
 672                                                                                         case ICMD_IFLE:
 673                                                                                                 iptr[0].opc = ICMD_IF_LLE;
 674                                                                                                 goto icmd_lconst_lcmp_tail;
 675                                                                                         case ICMD_IFGE:
 676                                                                                                 iptr[0].opc = ICMD_IF_LGE;
 677                                                                                                 goto icmd_lconst_lcmp_tail;
 678                                                                                         default:
 679                                                                                                 PUSHCONST(TYPE_LNG);
 680                                                                                         } /* switch (iptr[2].opc) */
 681                                                                                         } /* if (iptr[2].val.i == 0) */
 682                                                                                 else
 683                                                                                         PUSHCONST(TYPE_LNG);
 684                                                                                 break;
 685                                                                         default:
 686                                                                                 PUSHCONST(TYPE_LNG);
 687                                                                         }
 688                                                                 }
 689                                                         else
 690                                                                 PUSHCONST(TYPE_LNG);
 691                                                         break;
 692                                                 case ICMD_FCONST:
 693                                                         COUNT(count_pcmd_load);
 694                                                         PUSHCONST(TYPE_FLT);
 695                                                         break;
 696                                                 case ICMD_DCONST:
 697                                                         COUNT(count_pcmd_load);
 698                                                         PUSHCONST(TYPE_DBL);
 699                                                         break;
 700                                                 case ICMD_ACONST:
 701                                                         COUNT(count_pcmd_load);
 702                                                         PUSHCONST(TYPE_ADR);
 703                                                         break;
 704
 705                                                 /* pop 0 push 1 load */
 706
 707                                                 case ICMD_ILOAD:
 708                                                 case ICMD_LLOAD:
 709                                                 case ICMD_FLOAD:
 710                                                 case ICMD_DLOAD:
 711                                                 case ICMD_ALOAD:
 712                                                         COUNT(count_load_instruction);
 713                                                         i = opcode-ICMD_ILOAD;
 714                                                         locals[iptr->op1][i].type = i;
 715                                                         LOAD(i, LOCALVAR, iptr->op1);
 716                                                         break;
 717
 718                                                 /* pop 2 push 1 */
 719
 720                                                 case ICMD_IALOAD:
 721                                                 case ICMD_LALOAD:
 722                                                 case ICMD_FALOAD:
 723                                                 case ICMD_DALOAD:
 724                                                 case ICMD_AALOAD:
 725                                                         COUNT(count_check_null);
 726                                                         COUNT(count_check_bound);
 727                                                 case ICMD_OPT_IALOAD:
 728                                                 case ICMD_OPT_LALOAD:
 729                                                 case ICMD_OPT_FALOAD:
 730                                                 case ICMD_OPT_DALOAD:
 731                                                 case ICMD_OPT_AALOAD:
 732                                                         COUNT(count_pcmd_mem);
 733                                                         OP2IAT_1(opcode-ICMD_IALOAD);
 734                                                         break;
 735
 736                                                 case ICMD_BALOAD:
 737                                                 case ICMD_CALOAD:
 738                                                 case ICMD_SALOAD:
 739                                                         COUNT(count_check_null);
 740                                                         COUNT(count_check_bound);
 741                                                 case ICMD_OPT_BALOAD:
 742                                                 case ICMD_OPT_CALOAD:
 743                                                 case ICMD_OPT_SALOAD:
 744                                                         COUNT(count_pcmd_mem);
 745                                                         OP2IAT_1(TYPE_INT);
 746                                                         break;
 747
 748                                                 /* pop 0 push 0 iinc */
 749
 750                                                 case ICMD_IINC:
 751 #ifdef STATISTICS
 752                                                         i = stackdepth;
 753                                                         if (i >= 10)
 754                                                                 count_store_depth[10]++;
 755                                                         else
 756                                                                 count_store_depth[i]++;
 757 #endif
 758                                                         copy = curstack;
 759                                                         i = stackdepth - 1;
 760                                                         while (copy) {
 761                                                                 if ((copy->varkind == LOCALVAR) &&
 762                                                                     (copy->varnum == curstack->varnum)) {
 763                                                                         copy->varkind = TEMPVAR;
 764                                                                         copy->varnum = i;
 765                                                                         }
 766                                                                 i--;
 767                                                                 copy = copy->prev;
 768                                                                 }
 769                                                         SETDST;
 770                                                         break;
 771
 772                                                 /* pop 1 push 0 store */
 773
 774                                                 case ICMD_ISTORE:
 775                                                 case ICMD_LSTORE:
 776                                                 case ICMD_FSTORE:
 777                                                 case ICMD_DSTORE:
 778                                                 case ICMD_ASTORE:
 779                                                         i = opcode-ICMD_ISTORE;
 780                                                         locals[iptr->op1][i].type = i;
 781 #ifdef STATISTICS
 782                                                         count_pcmd_store++;
 783                                                         i = new - curstack;
 784                                                         if (i >= 20)
 785                                                                 count_store_length[20]++;
 786                                                         else
 787                                                                 count_store_length[i]++;
 788                                                         i = stackdepth - 1;
 789                                                         if (i >= 10)
 790                                                                 count_store_depth[10]++;
 791                                                         else
 792                                                                 count_store_depth[i]++;
 793 #endif
 794                                                         copy = curstack->prev;
 795                                                         i = stackdepth - 2;
 796                                                         while (copy) {
 797                                                                 if ((copy->varkind == LOCALVAR) &&
 798                                                                     (copy->varnum == curstack->varnum)) {
 799                                                                         copy->varkind = TEMPVAR;
 800                                                                         copy->varnum = i;
 801                                                                         }
 802                                                                 i--;
 803                                                                 copy = copy->prev;
 804                                                                 }
 805                                                         if ((new - curstack) == 1) {
 806                                                                 curstack->varkind = LOCALVAR;
 807                                                                 curstack->varnum = iptr->op1;
 808                                                                 };
 809                                                         STORE(opcode-ICMD_ISTORE);
 810                                                         break;
 811
 812                                                 /* pop 3 push 0 */
 813
 814                                                 case ICMD_IASTORE:
 815                                                 case ICMD_LASTORE:
 816                                                 case ICMD_FASTORE:
 817                                                 case ICMD_DASTORE:
 818                                                 case ICMD_AASTORE:
 819                                                         COUNT(count_check_null);
 820                                                         COUNT(count_check_bound);
 821                                                 case ICMD_OPT_IASTORE:
 822                                                 case ICMD_OPT_LASTORE:
 823                                                 case ICMD_OPT_FASTORE:
 824                                                 case ICMD_OPT_DASTORE:
 825                                                 case ICMD_OPT_AASTORE:
 826                                                         COUNT(count_pcmd_mem);
 827                                                         OP3TIA_0(opcode-ICMD_IASTORE);
 828                                                         break;
 829                                                 case ICMD_BASTORE:
 830                                                 case ICMD_CASTORE:
 831                                                 case ICMD_SASTORE:
 832                                                         COUNT(count_check_null);
 833                                                         COUNT(count_check_bound);
 834                                                         COUNT(count_pcmd_mem);
 835                                                 case ICMD_OPT_BASTORE:
 836                                                 case ICMD_OPT_CASTORE:
 837                                                 case ICMD_OPT_SASTORE:
 838                                                         OP3TIA_0(TYPE_INT);
 839                                                         break;
 840
 841                                                 /* pop 1 push 0 */
 842
 843                                                 case ICMD_POP:
 844                                                         OP1_0ANY;
 845                                                         break;
 846
 847                                                 case ICMD_IRETURN:
 848                                                 case ICMD_LRETURN:
 849                                                 case ICMD_FRETURN:
 850                                                 case ICMD_DRETURN:
 851                                                 case ICMD_ARETURN:
 852                                                         COUNT(count_pcmd_return);
 853                                                         OP1_0(opcode-ICMD_IRETURN);
 854                                                         superblockend = true;
 855                                                         break;
 856
 857                                                 case ICMD_ATHROW:
 858                                                         COUNT(count_check_null);
 859                                                         OP1_0(TYPE_ADR);
 860                                                         STACKRESET;
 861                                                         SETDST;
 862                                                         superblockend = true;
 863                                                         break;
 864
 865                                                 case ICMD_PUTSTATIC:
 866                                                         COUNT(count_pcmd_mem);
 867                                                         OP1_0(iptr->op1);
 868                                                         break;
 869
 870                                                 /* pop 1 push 0 branch */
 871
 872                                                 case ICMD_IFNULL:
 873                                                 case ICMD_IFNONNULL:
 874                                                         COUNT(count_pcmd_bra);
 875                                                         OP1_0(TYPE_ADR);
 876                                                         tbptr = block + block_index[iptr->op1];
 877                                                         MARKREACHED(tbptr, copy);
 878                                                         break;
 879
 880                                                 case ICMD_IFEQ:
 881                                                 case ICMD_IFNE:
 882                                                 case ICMD_IFLT:
 883                                                 case ICMD_IFGE:
 884                                                 case ICMD_IFGT:
 885                                                 case ICMD_IFLE:
 886                                                         COUNT(count_pcmd_bra);
 887 #ifdef CONDITIONAL_LOADCONST
 888                                                         {
 889                                                         tbptr = block + b_index;
 890                                                         if ((b_count >= 3) &&
 891                                                             ((b_index + 2) == block_index[iptr[0].op1]) &&
 892                                                             (tbptr[1].pre_count == 1) &&
 893                                                             (iptr[1].opc == ICMD_ICONST) &&
 894                                                             (iptr[2].opc == ICMD_GOTO)   &&
 895                                                             ((b_index + 3) == block_index[iptr[2].op1]) &&
 896                                                             (tbptr[2].pre_count == 1) &&
 897                                                             (iptr[3].opc == ICMD_ICONST)) {
 898                                                                 OP1_1(TYPE_INT, TYPE_INT);
 899                                                                 switch (iptr[0].opc) {
 900                                                                         case ICMD_IFEQ:
 901                                                                                 iptr[0].opc = ICMD_IFNE_ICONST;
 902                                                                                 break;
 903                                                                         case ICMD_IFNE:
 904                                                                                 iptr[0].opc = ICMD_IFEQ_ICONST;
 905                                                                                 break;
 906                                                                         case ICMD_IFLT:
 907                                                                                 iptr[0].opc = ICMD_IFGE_ICONST;
 908                                                                                 break;
 909                                                                         case ICMD_IFGE:
 910                                                                                 iptr[0].opc = ICMD_IFLT_ICONST;
 911                                                                                 break;
 912                                                                         case ICMD_IFGT:
 913                                                                                 iptr[0].opc = ICMD_IFLE_ICONST;
 914                                                                                 break;
 915                                                                         case ICMD_IFLE:
 916                                                                                 iptr[0].opc = ICMD_IFGT_ICONST;
 917                                                                                 break;
 918                                                                         }
 919                                                                 iptr[0].val.i = iptr[1].val.i;
 920                                                                 iptr[1].opc = ICMD_ELSE_ICONST;
 921                                                                 iptr[1].val.i = iptr[3].val.i;
 922                                                                 iptr[2].opc = ICMD_NOP;
 923                                                                 iptr[3].opc = ICMD_NOP;
 924                                                                 tbptr[1].flags = BBDELETED;
 925                                                                 tbptr[2].flags = BBDELETED;
 926                                                                 tbptr[1].icount = 0;
 927                                                                 tbptr[2].icount = 0;
 928                                                                 if (tbptr[3].pre_count == 2) {
 929                                                                         len += tbptr[3].icount + 3;
 930                                                                         bptr->icount += tbptr[3].icount + 3;
 931                                                                         tbptr[3].flags = BBDELETED;
 932                                                                         tbptr[3].icount = 0;
 933                                                                         b_index++;
 934                                                                         }
 935                                                                 else {
 936                                                                         bptr->icount++;
 937                                                                         len ++;
 938                                                                         }
 939                                                                 b_index += 2;
 940                                                                 break;
 941                                                                 }
 942                                                         }
 943 #endif
 944                                                         OP1_0(TYPE_INT);
 945                                                         tbptr = block + block_index[iptr->op1];
 946                                                         MARKREACHED(tbptr, copy);
 947                                                         break;
 948
 949                                                 /* pop 0 push 0 branch */
 950
 951                                                 case ICMD_GOTO:
 952                                                         COUNT(count_pcmd_bra);
 953                                                         tbptr = block + block_index[iptr->op1];
 954                                                         MARKREACHED(tbptr, copy);
 955                                                         SETDST;
 956                                                         superblockend = true;
 957                                                         break;
 958
 959                                                 /* pop 1 push 0 table branch */
 960
 961                                                 case ICMD_TABLESWITCH:
 962                                                         COUNT(count_pcmd_table);
 963                                                         OP1_0(TYPE_INT);
 964                                                         s4ptr = iptr->val.a;
 965                                                         tbptr = block + block_index[*s4ptr++]; /* default */
 966                                                         MARKREACHED(tbptr, copy);
 967                                                         i = *s4ptr++;                          /* low     */
 968                                                         i = *s4ptr++ - i + 1;                  /* high    */
 969                                                         while (--i >= 0) {
 970                                                                 tbptr = block + block_index[*s4ptr++];
 971                                                                 MARKREACHED(tbptr, copy);
 972                                                                 }
 973                                                         SETDST;
 974                                                         superblockend = true;
 975                                                         break;
 976
 977                                                 /* pop 1 push 0 table branch */
 978
 979                                                 case ICMD_LOOKUPSWITCH:
 980                                                         COUNT(count_pcmd_table);
 981                                                         OP1_0(TYPE_INT);
 982                                                         s4ptr = iptr->val.a;
 983                                                         tbptr = block + block_index[*s4ptr++]; /* default */
 984                                                         MARKREACHED(tbptr, copy);
 985                                                         i = *s4ptr++;                          /* count   */
 986                                                         while (--i >= 0) {
 987                                                                 tbptr = block + block_index[s4ptr[1]];
 988                                                                 MARKREACHED(tbptr, copy);
 989                                                                 s4ptr += 2;
 990                                                                 }
 991                                                         SETDST;
 992                                                         superblockend = true;
 993                                                         break;
 994
 995                                                 case ICMD_NULLCHECKPOP:
 996                                                 case ICMD_MONITORENTER:
 997                                                         COUNT(count_check_null);
 998                                                 case ICMD_MONITOREXIT:
 999                                                         OP1_0(TYPE_ADR);
1000                                                         break;
1001
1002                                                 /* pop 2 push 0 branch */
1003
1004                                                 case ICMD_IF_ICMPEQ:
1005                                                 case ICMD_IF_ICMPNE:
1006                                                 case ICMD_IF_ICMPLT:
1007                                                 case ICMD_IF_ICMPGE:
1008                                                 case ICMD_IF_ICMPGT:
1009                                                 case ICMD_IF_ICMPLE:
1010                                                         COUNT(count_pcmd_bra);
1011                                                         OP2_0(TYPE_INT);
1012                                                         tbptr = block + block_index[iptr->op1];
1013                                                         MARKREACHED(tbptr, copy);
1014                                                         break;
1015
1016                                                 case ICMD_IF_ACMPEQ:
1017                                                 case ICMD_IF_ACMPNE:
1018                                                         COUNT(count_pcmd_bra);
1019                                                         OP2_0(TYPE_ADR);
1020                                                         tbptr = block + block_index[iptr->op1];
1021                                                         MARKREACHED(tbptr, copy);
1022                                                         break;
1023
1024                                                 /* pop 2 push 0 */
1025
1026                                                 case ICMD_PUTFIELD:
1027                                                         COUNT(count_check_null);
1028                                                         COUNT(count_pcmd_mem);
1029                                                         OPTT2_0(iptr->op1,TYPE_ADR);
1030                                                         break;
1031
1032                                                 case ICMD_POP2:
1033                                                         if (! IS_2_WORD_TYPE(curstack->type)) {
1034                                                                 OP1_0ANY;                /* second pop */
1035                                                                 }
1036                                                         else
1037                                                                 iptr->opc = ICMD_POP;
1038                                                         OP1_0ANY;
1039                                                         break;
1040
1041                                                 /* pop 0 push 1 dup */
1042
1043                                                 case ICMD_DUP:
1044                                                         COUNT(count_dup_instruction);
1045                                                         DUP;
1046                                                         break;
1047
1048                                                 case ICMD_DUP2:
1049                                                         if (IS_2_WORD_TYPE(curstack->type)) {
1050                                                                 iptr->opc = ICMD_DUP;
1051                                                                 DUP;
1052                                                                 }
1053                                                         else {
1054                                                                 copy = curstack;
1055                                                                 NEWSTACK(copy[-1].type, copy[-1].varkind,
1056                                                                          copy[-1].varnum);
1057                                                                 NEWSTACK(copy[ 0].type, copy[ 0].varkind,
1058                                                                          copy[ 0].varnum);
1059                                                                 SETDST;
1060                                                                 stackdepth+=2;
1061                                                                 }
1062                                                         break;
1063
1064                                                 /* pop 2 push 3 dup */
1065
1066                                                 case ICMD_DUP_X1:
1067                                                         DUP_X1;
1068                                                         break;
1069
1070                                                 case ICMD_DUP2_X1:
1071                                                         if (IS_2_WORD_TYPE(curstack->type)) {
1072                                                                 iptr->opc = ICMD_DUP_X1;
1073                                                                 DUP_X1;
1074                                                                 }
1075                                                         else {
1076                                                                 DUP2_X1;
1077                                                                 }
1078                                                         break;
1079
1080                                                 /* pop 3 push 4 dup */
1081
1082                                                 case ICMD_DUP_X2:
1083                                                         if (IS_2_WORD_TYPE(curstack[-1].type)) {
1084                                                                 iptr->opc = ICMD_DUP_X1;
1085                                                                 DUP_X1;
1086                                                                 }
1087                                                         else {
1088                                                                 DUP_X2;
1089                                                                 }
1090                                                         break;
1091
1092                                                 case ICMD_DUP2_X2:
1093                                                         if (IS_2_WORD_TYPE(curstack->type)) {
1094                                                                 if (IS_2_WORD_TYPE(curstack[-1].type)) {
1095                                                                         iptr->opc = ICMD_DUP_X1;
1096                                                                         DUP_X1;
1097                                                                         }
1098                                                                 else {
1099                                                                         iptr->opc = ICMD_DUP_X2;
1100                                                                         DUP_X2;
1101                                                                         }
1102                                                                 }
1103                                                         else
1104                                                                 if (IS_2_WORD_TYPE(curstack[-2].type)) {
1105                                                                         iptr->opc = ICMD_DUP2_X1;
1106                                                                         DUP2_X1;
1107                                                                         }
1108                                                                 else {
1109                                                                         DUP2_X2;
1110                                                                         }
1111                                                         break;
1112
1113                                                 /* pop 2 push 2 swap */
1114
1115                                                 case ICMD_SWAP:
1116                                                         SWAP;
1117                                                         break;
1118
1119                                                 /* pop 2 push 1 */
1120
1121                                                 case ICMD_IDIV:
1122                                                         if (!(SUPPORT_DIVISION)) {
1123                                                                 iptr[0].opc = ICMD_BUILTIN2;
1124                                                                 iptr[0].op1 = TYPE_INT;
1125                                                                 iptr[0].val.a = (functionptr) asm_builtin_idiv;
1126                                                                 isleafmethod = false;
1127                                                                 goto builtin2;
1128                                                                 }
1129
1130                                                 case ICMD_LDIV:
1131                                                         if (!(SUPPORT_DIVISION && SUPPORT_LONG && SUPPORT_LONG_MULDIV)) {
1132                                                                 iptr[0].opc = ICMD_BUILTIN2;
1133                                                                 iptr[0].op1 = TYPE_LNG;
1134                                                                 iptr[0].val.a = (functionptr) asm_builtin_ldiv;
1135                                                                 isleafmethod = false;
1136                                                                 goto builtin2;
1137                                                                 }
1138
1139                                                 case ICMD_IREM:
1140                                                         if (!(SUPPORT_DIVISION)) {
1141                                                                 iptr[0].opc = ICMD_BUILTIN2;
1142                                                                 iptr[0].op1 = TYPE_INT;
1143                                                                 iptr[0].val.a = (functionptr) asm_builtin_irem;
1144                                                                 isleafmethod = false;
1145                                                                 goto builtin2;
1146                                                                 }
1147
1148                                                 case ICMD_LREM:
1149                                                         if (!(SUPPORT_DIVISION && SUPPORT_LONG && SUPPORT_LONG_MULDIV)) {
1150                                                                 iptr[0].opc = ICMD_BUILTIN2;
1151                                                                 iptr[0].op1 = TYPE_LNG;
1152                                                                 iptr[0].val.a = (functionptr) asm_builtin_lrem;
1153                                                                 isleafmethod = false;
1154                                                                 goto builtin2;
1155                                                                 }
1156
1157                                                 case ICMD_IADD:
1158                                                 case ICMD_ISUB:
1159                                                 case ICMD_IMUL:
1160
1161                                                 case ICMD_ISHL:
1162                                                 case ICMD_ISHR:
1163                                                 case ICMD_IUSHR:
1164                                                 case ICMD_IAND:
1165                                                 case ICMD_IOR:
1166                                                 case ICMD_IXOR:
1167                                                         COUNT(count_pcmd_op);
1168                                                         OP2_1(TYPE_INT);
1169                                                         break;
1170
1171                                                 case ICMD_LADD:
1172                                                 case ICMD_LSUB:
1173                                                 case ICMD_LMUL:
1174
1175                                                 case ICMD_LOR:
1176                                                 case ICMD_LAND:
1177                                                 case ICMD_LXOR:
1178                                                         COUNT(count_pcmd_op);
1179                                                         OP2_1(TYPE_LNG);
1180                                                         break;
1181
1182                                                 case ICMD_LSHL:
1183                                                 case ICMD_LSHR:
1184                                                 case ICMD_LUSHR:
1185                                                         COUNT(count_pcmd_op);
1186                                                         OP2IT_1(TYPE_LNG);
1187                                                         break;
1188
1189                                                 case ICMD_FADD:
1190                                                 case ICMD_FSUB:
1191                                                 case ICMD_FMUL:
1192                                                 case ICMD_FDIV:
1193                                                 case ICMD_FREM:
1194                                                         COUNT(count_pcmd_op);
1195                                                         OP2_1(TYPE_FLT);
1196                                                         break;
1197
1198                                                 case ICMD_DADD:
1199                                                 case ICMD_DSUB:
1200                                                 case ICMD_DMUL:
1201                                                 case ICMD_DDIV:
1202                                                 case ICMD_DREM:
1203                                                         COUNT(count_pcmd_op);
1204                                                         OP2_1(TYPE_DBL);
1205                                                         break;
1206
1207                                                 case ICMD_LCMP:
1208                                                         COUNT(count_pcmd_op);
1209                                                         if ((len > 0) && (iptr[1].val.i == 0)) {
1210                                                                 switch (iptr[1].opc) {
1211                                                                         case ICMD_IFEQ:
1212                                                                                 iptr[0].opc = ICMD_IF_LCMPEQ;
1213 icmd_lcmp_if_tail:
1214                                                                                 iptr[0].op1 = iptr[1].op1;
1215                                                                                 len--;
1216                                                                                 bptr->icount--;
1217                                                                                 /* iptr[1].opc = ICMD_NOP; */
1218                                                                                 OP2_0(TYPE_LNG);
1219                                                                                 tbptr = block + block_index[iptr->op1];
1220                                                                                 MARKREACHED(tbptr, copy);
1221                                                                                 COUNT(count_pcmd_bra);
1222                                                                                 break;
1223                                                                         case ICMD_IFNE:
1224                                                                                 iptr[0].opc = ICMD_IF_LCMPNE;
1225                                                                                 goto icmd_lcmp_if_tail;
1226                                                                         case ICMD_IFLT:
1227                                                                                 iptr[0].opc = ICMD_IF_LCMPLT;
1228                                                                                 goto icmd_lcmp_if_tail;
1229                                                                         case ICMD_IFGT:
1230                                                                                 iptr[0].opc = ICMD_IF_LCMPGT;
1231                                                                                 goto icmd_lcmp_if_tail;
1232                                                                         case ICMD_IFLE:
1233                                                                                 iptr[0].opc = ICMD_IF_LCMPLE;
1234                                                                                 goto icmd_lcmp_if_tail;
1235                                                                         case ICMD_IFGE:
1236                                                                                 iptr[0].opc = ICMD_IF_LCMPGE;
1237                                                                                 goto icmd_lcmp_if_tail;
1238                                                                         default:
1239                                                                                 OPTT2_1(TYPE_LNG, TYPE_INT);
1240                                                                         }
1241                                                                 }
1242                                                         else
1243                                                                 OPTT2_1(TYPE_LNG, TYPE_INT);
1244                                                         break;
1245                                                 case ICMD_FCMPL:
1246                                                 case ICMD_FCMPG:
1247                                                         COUNT(count_pcmd_op);
1248                                                         OPTT2_1(TYPE_FLT, TYPE_INT);
1249                                                         break;
1250                                                 case ICMD_DCMPL:
1251                                                 case ICMD_DCMPG:
1252                                                         COUNT(count_pcmd_op);
1253                                                         OPTT2_1(TYPE_DBL, TYPE_INT);
1254                                                         break;
1255
1256                                                 /* pop 1 push 1 */
1257
1258                                                 case ICMD_INEG:
1259                                                 case ICMD_INT2BYTE:
1260                                                 case ICMD_INT2CHAR:
1261                                                 case ICMD_INT2SHORT:
1262                                                         COUNT(count_pcmd_op);
1263                                                         OP1_1(TYPE_INT, TYPE_INT);
1264                                                         break;
1265                                                 case ICMD_LNEG:
1266                                                         COUNT(count_pcmd_op);
1267                                                         OP1_1(TYPE_LNG, TYPE_LNG);
1268                                                         break;
1269                                                 case ICMD_FNEG:
1270                                                         COUNT(count_pcmd_op);
1271                                                         OP1_1(TYPE_FLT, TYPE_FLT);
1272                                                         break;
1273                                                 case ICMD_DNEG:
1274                                                         COUNT(count_pcmd_op);
1275                                                         OP1_1(TYPE_DBL, TYPE_DBL);
1276                                                         break;
1277
1278                                                 case ICMD_I2L:
1279                                                         COUNT(count_pcmd_op);
1280                                                         OP1_1(TYPE_INT, TYPE_LNG);
1281                                                         break;
1282                                                 case ICMD_I2F:
1283                                                         COUNT(count_pcmd_op);
1284                                                         OP1_1(TYPE_INT, TYPE_FLT);
1285                                                         break;
1286                                                 case ICMD_I2D:
1287                                                         COUNT(count_pcmd_op);
1288                                                         OP1_1(TYPE_INT, TYPE_DBL);
1289                                                         break;
1290                                                 case ICMD_L2I:
1291                                                         COUNT(count_pcmd_op);
1292                                                         OP1_1(TYPE_LNG, TYPE_INT);
1293                                                         break;
1294                                                 case ICMD_L2F:
1295                                                         COUNT(count_pcmd_op);
1296                                                         OP1_1(TYPE_LNG, TYPE_FLT);
1297                                                         break;
1298                                                 case ICMD_L2D:
1299                                                         COUNT(count_pcmd_op);
1300                                                         OP1_1(TYPE_LNG, TYPE_DBL);
1301                                                         break;
1302                                                 case ICMD_F2I:
1303                                                         COUNT(count_pcmd_op);
1304                                                         OP1_1(TYPE_FLT, TYPE_INT);
1305                                                         break;
1306                                                 case ICMD_F2L:
1307                                                         COUNT(count_pcmd_op);
1308                                                         OP1_1(TYPE_FLT, TYPE_LNG);
1309                                                         break;
1310                                                 case ICMD_F2D:
1311                                                         COUNT(count_pcmd_op);
1312                                                         OP1_1(TYPE_FLT, TYPE_DBL);
1313                                                         break;
1314                                                 case ICMD_D2I:
1315                                                         COUNT(count_pcmd_op);
1316                                                         OP1_1(TYPE_DBL, TYPE_INT);
1317                                                         break;
1318                                                 case ICMD_D2L:
1319                                                         COUNT(count_pcmd_op);
1320                                                         OP1_1(TYPE_DBL, TYPE_LNG);
1321                                                         break;
1322                                                 case ICMD_D2F:
1323                                                         COUNT(count_pcmd_op);
1324                                                         OP1_1(TYPE_DBL, TYPE_FLT);
1325                                                         break;
1326
1327                                                 case ICMD_CHECKCAST:
1328                                                         OP1_1(TYPE_ADR, TYPE_ADR);
1329                                                         break;
1330
1331                                                 case ICMD_ARRAYLENGTH:
1332                                                 case ICMD_INSTANCEOF:
1333                                                         OP1_1(TYPE_ADR, TYPE_INT);
1334                                                         break;
1335
1336                                                 case ICMD_NEWARRAY:
1337                                                 case ICMD_ANEWARRAY:
1338                                                         OP1_1(TYPE_INT, TYPE_ADR);
1339                                                         break;
1340
1341                                                 case ICMD_GETFIELD:
1342                                                         COUNT(count_check_null);
1343                                                         COUNT(count_pcmd_mem);
1344                                                         OP1_1(TYPE_ADR, iptr->op1);
1345                                                         break;
1346
1347                                                 /* pop 0 push 1 */
1348
1349                                                 case ICMD_GETSTATIC:
1350                                                         COUNT(count_pcmd_mem);
1351                                                         OP0_1(iptr->op1);
1352                                                         break;
1353
1354                                                 case ICMD_NEW:
1355                                                         OP0_1(TYPE_ADR);
1356                                                         break;
1357
1358                                                 case ICMD_JSR:
1359                                                         OP0_1(TYPE_ADR);
1360                                                         tbptr = block + block_index[iptr->op1];
1361                                                         tbptr->type=BBTYPE_SBR;
1362                                                         MARKREACHED(tbptr, copy);
1363                                                         OP1_0ANY;
1364                                                         break;
1365
1366                                                 /* pop many push any */
1367
1368                                                 case ICMD_INVOKEVIRTUAL:
1369                                                 case ICMD_INVOKESPECIAL:
1370                                                 case ICMD_INVOKEINTERFACE:
1371                                                 case ICMD_INVOKESTATIC:
1372                                                         COUNT(count_pcmd_met);
1373                                                         {
1374                                                         methodinfo *m = iptr->val.a;
1375                                                         if (m->flags & ACC_STATIC)
1376                                                                 {COUNT(count_check_null);}
1377                                                         i = iptr->op1;
1378                                                         if (i > arguments_num)
1379                                                                 arguments_num = i;
1380                                                         copy = curstack;
1381                                                         while (--i >= 0) {
1382                                                                 if (! (copy->flags & SAVEDVAR)) {
1383                                                                         copy->varkind = ARGVAR;
1384                                                                         copy->varnum = i;
1385                                                                         }
1386                                                                 copy = copy->prev;
1387                                                                 }
1388                                                         while (copy) {
1389                                                                 copy->flags |= SAVEDVAR;
1390                                                                 copy = copy->prev;
1391                                                                 }
1392                                                         i = iptr->op1;
1393                                                         POPMANY(i);
1394                                                         if (m->returntype != TYPE_VOID) {
1395                                                                 OP0_1(m->returntype);
1396                                                                 }
1397                                                         break;
1398                                                         }
1399
1400                                                 case ICMD_BUILTIN3:
1401                                                         if (! (curstack->flags & SAVEDVAR)) {
1402                                                                 curstack->varkind = ARGVAR;
1403                                                                 curstack->varnum = 2;
1404                                                                 }
1405                                                         OP1_0ANY;
1406                                                 case ICMD_BUILTIN2:
1407 builtin2:
1408                                                         if (! (curstack->flags & SAVEDVAR)) {
1409                                                                 curstack->varkind = ARGVAR;
1410                                                                 curstack->varnum = 1;
1411                                                                 }
1412                                                         OP1_0ANY;
1413                                                 case ICMD_BUILTIN1:
1414                                                         if (! (curstack->flags & SAVEDVAR)) {
1415                                                                 curstack->varkind = ARGVAR;
1416                                                                 curstack->varnum = 0;
1417                                                                 }
1418                                                         OP1_0ANY;
1419                                                         copy = curstack;
1420                                                         while (copy) {
1421                                                                 copy->flags |= SAVEDVAR;
1422                                                                 copy = copy->prev;
1423                                                                 }
1424                                                         if (iptr->op1 != TYPE_VOID)
1425                                                                 OP0_1(iptr->op1);
1426                                                         break;
1427
1428                                                 case ICMD_MULTIANEWARRAY:
1429                                                         i = iptr->op1;
1430                                                         if ((i + intreg_argnum) > arguments_num)
1431                                                                 arguments_num = i + intreg_argnum;
1432                                                         copy = curstack;
1433                                                         while (--i >= 0) {
1434                                                                 if (! (copy->flags & SAVEDVAR)) {
1435                                                                         copy->varkind = ARGVAR;
1436                                                                         copy->varnum = i + intreg_argnum;
1437                                                                         }
1438                                                                 copy = copy->prev;
1439                                                                 }
1440                                                         while (copy) {
1441                                                                 copy->flags |= SAVEDVAR;
1442                                                                 copy = copy->prev;
1443                                                                 }
1444                                                         i = iptr->op1;
1445                                                         POPMANY(i);
1446                                                         OP0_1(TYPE_ADR);
1447                                                         break;
1448
1449                                                 default:
1450                                                         printf("ICMD %d at %d\n", iptr->opc, (int)(iptr-instr));
1451                                                         panic("Missing ICMD code during stack analysis");
1452                                                 } /* switch */
1453                                         iptr++;
1454                                         } /* while instructions */
1455                                 bptr->outstack = curstack;
1456                                 bptr->outdepth = stackdepth;
1457                                 BBEND(curstack, i);
1458                                 } /* if */
1459                         else
1460                                 superblockend = true;
1461                         bptr++;
1462                 } /* while blocks */
1463         } while (repeat && ! deadcode);
1464
1465 #ifdef STATISTICS
1466         if (block_count > count_max_basic_blocks)
1467                 count_max_basic_blocks = block_count;
1468         count_basic_blocks += block_count;
1469         if (instr_count > count_max_javainstr)
1470                 count_max_javainstr = instr_count;
1471         count_javainstr += instr_count;
1472         if (stack_count > count_upper_bound_new_stack)
1473                 count_upper_bound_new_stack = stack_count;
1474         if ((new - stack) > count_max_new_stack)
1475                 count_max_new_stack = (new - stack);
1476
1477         b_count = block_count;
1478         bptr = block;
1479         while (--b_count >= 0) {
1480                 if (bptr->flags > BBREACHED) {
1481                         if (bptr->indepth >= 10)
1482                                 count_block_stack[10]++;
1483                         else
1484                                 count_block_stack[bptr->indepth]++;
1485                         len = bptr->icount;
1486                         if (len <= 10)
1487                                 count_block_size_distribution[len - 1]++;
1488                         else if (len <= 12)
1489                                 count_block_size_distribution[10]++;
1490                         else if (len <= 14)
1491                                 count_block_size_distribution[11]++;
1492                         else if (len <= 16)
1493                                 count_block_size_distribution[12]++;
1494                         else if (len <= 18)
1495                                 count_block_size_distribution[13]++;
1496                         else if (len <= 20)
1497                                 count_block_size_distribution[14]++;
1498                         else if (len <= 25)
1499                                 count_block_size_distribution[15]++;
1500                         else if (len <= 30)
1501                                 count_block_size_distribution[16]++;
1502                         else
1503                                 count_block_size_distribution[17]++;
1504                         }
1505                 bptr++;
1506                 }
1507
1508         if (loops == 1)
1509                 count_analyse_iterations[0]++;
1510         else if (loops == 2)
1511                 count_analyse_iterations[1]++;
1512         else if (loops == 3)
1513                 count_analyse_iterations[2]++;
1514         else if (loops == 4)
1515                 count_analyse_iterations[3]++;
1516         else
1517                 count_analyse_iterations[4]++;
1518
1519         if (block_count <= 5)
1520                 count_method_bb_distribution[0]++;
1521         else if (block_count <= 10)
1522                 count_method_bb_distribution[1]++;
1523         else if (block_count <= 15)
1524                 count_method_bb_distribution[2]++;
1525         else if (block_count <= 20)
1526                 count_method_bb_distribution[3]++;
1527         else if (block_count <= 30)
1528                 count_method_bb_distribution[4]++;
1529         else if (block_count <= 40)
1530                 count_method_bb_distribution[5]++;
1531         else if (block_count <= 50)
1532                 count_method_bb_distribution[6]++;
1533         else if (block_count <= 75)
1534                 count_method_bb_distribution[7]++;
1535         else
1536                 count_method_bb_distribution[8]++;
1537 #endif
1538 }
1539
1540
1541 static void print_stack(stackptr s) {
1542         int i, j;
1543         stackptr t;
1544
1545         i = maxstack;
1546         t = s;
1547
1548         while (t) {
1549                 i--;
1550                 t = t->prev;
1551                 }
1552         j = maxstack - i;
1553         while (--i >= 0)
1554                 printf("    ");
1555         while (s) {
1556                 j--;
1557                 if (s->flags & SAVEDVAR)
1558                         switch (s->varkind) {
1559                                 case TEMPVAR:
1560                                         if (s->flags & INMEMORY)
1561                                                 printf(" M%02d", s->regoff);
1562                                         else if ((s->type == TYPE_FLT) || (s->type == TYPE_DBL))
1563                                                 printf(" F%02d", s->regoff);
1564                                         else
1565                                                 printf(" %3s", regs[s->regoff]);
1566                                         break;
1567                                 case STACKVAR:
1568                                         printf(" I%02d", s->varnum);
1569                                         break;
1570                                 case LOCALVAR:
1571                                         printf(" L%02d", s->varnum);
1572                                         break;
1573                                 case ARGVAR:
1574                                         printf(" A%02d", s->varnum);
1575                                         break;
1576                                 default:
1577                                         printf(" !%02d", j);
1578                                 }
1579                 else
1580                         switch (s->varkind) {
1581                                 case TEMPVAR:
1582                                         if (s->flags & INMEMORY)
1583                                                 printf(" m%02d", s->regoff);
1584                                         else if ((s->type == TYPE_FLT) || (s->type == TYPE_DBL))
1585                                                 printf(" f%02d", s->regoff);
1586                                         else
1587                                                 printf(" %3s", regs[s->regoff]);
1588                                         break;
1589                                 case STACKVAR:
1590                                         printf(" i%02d", s->varnum);
1591                                         break;
1592                                 case LOCALVAR:
1593                                         printf(" l%02d", s->varnum);
1594                                         break;
1595                                 case ARGVAR:
1596                                         printf(" a%02d", s->varnum);
1597                                         break;
1598                                 default:
1599                                         printf(" ?%02d", j);
1600                                 }
1601                 s = s->prev;
1602                 }
1603 }
1604
1605
1606 #if 0
1607 static void print_reg(stackptr s) {
1608         if (s) {
1609                 if (s->flags & SAVEDVAR)
1610                         switch (s->varkind) {
1611                                 case TEMPVAR:
1612                                         if (s->flags & INMEMORY)
1613                                                 printf(" tm%02d", s->regoff);
1614                                         else
1615                                                 printf(" tr%02d", s->regoff);
1616                                         break;
1617                                 case STACKVAR:
1618                                         printf(" s %02d", s->varnum);
1619                                         break;
1620                                 case LOCALVAR:
1621                                         printf(" l %02d", s->varnum);
1622                                         break;
1623                                 case ARGVAR:
1624                                         printf(" a %02d", s->varnum);
1625                                         break;
1626                                 default:
1627                                         printf(" ! %02d", s->varnum);
1628                                 }
1629                 else
1630                         switch (s->varkind) {
1631                                 case TEMPVAR:
1632                                         if (s->flags & INMEMORY)
1633                                                 printf(" Tm%02d", s->regoff);
1634                                         else
1635                                                 printf(" Tr%02d", s->regoff);
1636                                         break;
1637                                 case STACKVAR:
1638                                         printf(" S %02d", s->varnum);
1639                                         break;
1640                                 case LOCALVAR:
1641                                         printf(" L %02d", s->varnum);
1642                                         break;
1643                                 case ARGVAR:
1644                                         printf(" A %02d", s->varnum);
1645                                         break;
1646                                 default:
1647                                         printf(" ? %02d", s->varnum);
1648                                 }
1649                 }
1650         else
1651                 printf("     ");
1652
1653 }
1654 #endif
1655
1656
1657 static char *builtin_name(functionptr bptr)
1658 {
1659         builtin_descriptor *bdesc = builtin_desc;
1660         while ((bdesc->bptr != NULL) && (bdesc->bptr != bptr))
1661                 bdesc++;
1662         return bdesc->name;
1663 }
1664
1665
1666 static char *jit_type[] = {
1667         "int",
1668         "lng",
1669         "flt",
1670         "dbl",
1671         "adr"
1672 };
1673
1674
1675 static void show_icmd_method()
1676 {
1677         int b, i, j, last;
1678         int deadcode;
1679         s4  *s4ptr;
1680         instruction *iptr;
1681
1682         printf("\n");
1683         unicode_fprint(stdout, class->name);
1684         printf(".");
1685         unicode_fprint(stdout, method->name);
1686         printf(" ");
1687         unicode_fprint(stdout, method->descriptor);
1688         printf ("\n\nMax locals: %d\n", (int) maxlocals);
1689         printf ("Max stack:  %d\n", (int) maxstack);
1690
1691         printf ("Exceptions:\n");
1692         for (i = 0; i < exceptiontablelength; i++) {
1693                 printf("    L%03d ... ", block_index[extable[i].startpc]);
1694                 printf("L%03d = ", block_index[extable[i].endpc]);
1695                 printf("L%03d\n", block_index[extable[i].handlerpc]);
1696                 }
1697
1698         printf ("Local Table:\n");
1699         for (i = 0; i < maxlocals; i++) {
1700                 printf("   %3d: ", i);
1701                 for (j = TYPE_INT; j <= TYPE_ADR; j++)
1702                         if (locals[i][j].type >= 0) {
1703                                 printf("   (%s) ", jit_type[j]);
1704                                 if (locals[i][j].flags & INMEMORY)
1705                                         printf("m%2d", locals[i][j].regoff);
1706                                 else if ((j == TYPE_FLT) || (j == TYPE_DBL))
1707                                         printf("f%02d", locals[i][j].regoff);
1708                                 else
1709                                         printf("%3s", regs[locals[i][j].regoff]);
1710                                 }
1711                 printf("\n");
1712                 }
1713         printf("\n");
1714
1715         printf ("Interface Table:\n");
1716         for (i = 0; i < maxstack; i++) {
1717                 if ((interfaces[i][0].type >= 0) || (interfaces[i][1].type >= 0) ||
1718                     (interfaces[i][2].type >= 0) || (interfaces[i][3].type >= 0) ||
1719                     (interfaces[i][4].type >= 0)) {
1720                         printf("   %3d: ", i);
1721                         for (j = TYPE_INT; j <= TYPE_ADR; j++)
1722                                 if (interfaces[i][j].type >= 0) {
1723                                         printf("   (%s) ", jit_type[j]);
1724                                         if (interfaces[i][j].flags & SAVEDVAR) {
1725                                                 if (interfaces[i][j].flags & INMEMORY)
1726                                                         printf("M%2d", interfaces[i][j].regoff);
1727                                                 else if ((j == TYPE_FLT) || (j == TYPE_DBL))
1728                                                         printf("F%02d", interfaces[i][j].regoff);
1729                                                 else
1730                                                         printf("%3s", regs[interfaces[i][j].regoff]);
1731                                                 }
1732                                         else {
1733                                                 if (interfaces[i][j].flags & INMEMORY)
1734                                                         printf("m%2d", interfaces[i][j].regoff);
1735                                                 else if ((j == TYPE_FLT) || (j == TYPE_DBL))
1736                                                         printf("f%02d", interfaces[i][j].regoff);
1737                                                 else
1738                                                         printf("%3s", regs[interfaces[i][j].regoff]);
1739                                                 }
1740                                         }
1741                         printf("\n");
1742                         }
1743                 }
1744         printf("\n");
1745
1746         if (showdisassemble) {
1747                 s4ptr = (s4 *) (method->mcode + dseglen);
1748                 for (i = 0; i < block[0].mpc; i += 4, s4ptr++) {
1749                         disassinstr(*s4ptr, i);
1750                         }
1751                 printf("\n");
1752                 }
1753
1754         for (b = 0; b < block_count; b++)
1755                 if (block[b].flags != BBDELETED) {
1756                 deadcode = block[b].flags <= BBREACHED;
1757                 printf("[");
1758                 if (deadcode)
1759                         for (j = maxstack; j > 0; j--)
1760                                 printf(" ?  ");
1761                 else
1762                         print_stack(block[b].instack);
1763                 printf("] L%03d(%d):\n", b, block[b].pre_count);
1764                 iptr = block[b].iinstr;
1765                 i = iptr - instr;
1766                 for (last = i + block[b].icount; i < last; i++, iptr++) {
1767                         printf("[");
1768                         if (deadcode) {
1769                                 for (j = maxstack; j > 0; j--)
1770                                         printf(" ?  ");
1771                                 }
1772                         else
1773                                 print_stack(iptr->dst);
1774                         printf("]     %4d  %s", i, icmd_names[iptr->opc]);
1775                         switch ((int) iptr->opc) {
1776                                 case ICMD_IADDCONST:
1777                                 case ICMD_ISUBCONST:
1778                                 case ICMD_IMULCONST:
1779                                 case ICMD_IDIVPOW2:
1780                                 case ICMD_IREMPOW2:
1781                                 case ICMD_IREM0X10001:
1782                                 case ICMD_IANDCONST:
1783                                 case ICMD_IORCONST:
1784                                 case ICMD_IXORCONST:
1785                                 case ICMD_ISHLCONST:
1786                                 case ICMD_ISHRCONST:
1787                                 case ICMD_IUSHRCONST:
1788                                 case ICMD_ICONST:
1789                                 case ICMD_ELSE_ICONST:
1790                                 case ICMD_IFEQ_ICONST:
1791                                 case ICMD_IFNE_ICONST:
1792                                 case ICMD_IFLT_ICONST:
1793                                 case ICMD_IFGE_ICONST:
1794                                 case ICMD_IFGT_ICONST:
1795                                 case ICMD_IFLE_ICONST:
1796                                         printf(" %d", iptr->val.i);
1797                                         break;
1798                                 case ICMD_LADDCONST:
1799                                 case ICMD_LSUBCONST:
1800                                 case ICMD_LMULCONST:
1801                                 case ICMD_LDIVPOW2:
1802                                 case ICMD_LREMPOW2:
1803                                 case ICMD_LANDCONST:
1804                                 case ICMD_LORCONST:
1805                                 case ICMD_LXORCONST:
1806                                 case ICMD_LSHLCONST:
1807                                 case ICMD_LSHRCONST:
1808                                 case ICMD_LUSHRCONST:
1809                                 case ICMD_LCONST:
1810                                         printf(" %ld", iptr->val.l);
1811                                         break;
1812                                 case ICMD_FCONST:
1813                                         printf(" %f", iptr->val.f);
1814                                         break;
1815                                 case ICMD_DCONST:
1816                                         printf(" %f", iptr->val.d);
1817                                         break;
1818                                 case ICMD_ACONST:
1819                                         printf(" %p", iptr->val.a);
1820                                         break;
1821                                 case ICMD_GETFIELD:
1822                                 case ICMD_PUTFIELD:
1823                                         printf(" %d,", ((fieldinfo *) iptr->val.a)->offset);
1824                                 case ICMD_PUTSTATIC:
1825                                 case ICMD_GETSTATIC:
1826                                         printf(" ");
1827                                         unicode_fprint(stdout,
1828                                                         ((fieldinfo *) iptr->val.a)->name);
1829                                         break;
1830                                 case ICMD_IINC:
1831                                         printf(" %d + %d", iptr->op1, iptr->val.i);
1832                                         break;
1833                                 case ICMD_RET:
1834                                 case ICMD_ILOAD:
1835                                 case ICMD_LLOAD:
1836                                 case ICMD_FLOAD:
1837                                 case ICMD_DLOAD:
1838                                 case ICMD_ALOAD:
1839                                 case ICMD_ISTORE:
1840                                 case ICMD_LSTORE:
1841                                 case ICMD_FSTORE:
1842                                 case ICMD_DSTORE:
1843                                 case ICMD_ASTORE:
1844                                         printf(" %d", iptr->op1);
1845                                         break;
1846                                 case ICMD_NEW:
1847                                         printf(" ");
1848                                         unicode_fprint(stdout,
1849                                                        ((classinfo *) iptr->val.a)->name);
1850                                         break;
1851                                 case ICMD_NEWARRAY:
1852                                         switch (iptr->op1) {
1853                                                 case 4:
1854                                                         printf(" boolean");
1855                                                         break;
1856                                                 case 5:
1857                                                         printf(" char");
1858                                                         break;
1859                                                 case 6:
1860                                                         printf(" float");
1861                                                         break;
1862                                                 case 7:
1863                                                         printf(" double");
1864                                                         break;
1865                                                 case 8:
1866                                                         printf(" byte");
1867                                                         break;
1868                                                 case 9:
1869                                                         printf(" short");
1870                                                         break;
1871                                                 case 10:
1872                                                         printf(" int");
1873                                                         break;
1874                                                 case 11:
1875                                                         printf(" long");
1876                                                         break;
1877                                                 }
1878                                         break;
1879                                 case ICMD_ANEWARRAY:
1880                                         if (iptr->op1) {
1881                                                 printf(" ");
1882                                                 unicode_fprint(stdout,
1883                                                                ((classinfo *) iptr->val.a)->name);
1884                                                 }
1885                                         break;
1886                                 case ICMD_CHECKCAST:
1887                                 case ICMD_INSTANCEOF:
1888                                         if (iptr->op1) {
1889                                                 classinfo *c = iptr->val.a;
1890                                                 if (c->flags & ACC_INTERFACE)
1891                                                         printf(" (INTERFACE) ");
1892                                                 else
1893                                                         printf(" (CLASS,%3d) ", c->vftbl->diffval);
1894                                                 unicode_fprint(stdout, c->name);
1895                                                 }
1896                                         break;
1897                                 case ICMD_BUILTIN3:
1898                                 case ICMD_BUILTIN2:
1899                                 case ICMD_BUILTIN1:
1900                                         printf(" %s", builtin_name((functionptr) iptr->val.a));
1901                                         break;
1902                                 case ICMD_INVOKEVIRTUAL:
1903                                 case ICMD_INVOKESPECIAL:
1904                                 case ICMD_INVOKESTATIC:
1905                                 case ICMD_INVOKEINTERFACE:
1906                                         printf(" ");
1907                                         unicode_fprint(stdout,
1908                                                        ((methodinfo *) iptr->val.a)->class->name);
1909                                         printf(".");
1910                                         unicode_fprint(stdout,
1911                                                        ((methodinfo *) iptr->val.a)->name);
1912                                         break;
1913                                 case ICMD_IFEQ:
1914                                 case ICMD_IFNE:
1915                                 case ICMD_IFLT:
1916                                 case ICMD_IFGE:
1917                                 case ICMD_IFGT:
1918                                 case ICMD_IFLE:
1919                                 case ICMD_IF_LEQ:
1920                                 case ICMD_IF_LNE:
1921                                 case ICMD_IF_LLT:
1922                                 case ICMD_IF_LGE:
1923                                 case ICMD_IF_LGT:
1924                                 case ICMD_IF_LLE:
1925                                         printf("(%d) L%03d", iptr->val.i, block_index[iptr->op1]);
1926                                         break;
1927                                 case ICMD_JSR:
1928                                 case ICMD_GOTO:
1929                                 case ICMD_IFNULL:
1930                                 case ICMD_IFNONNULL:
1931                                 case ICMD_IF_ICMPEQ:
1932                                 case ICMD_IF_ICMPNE:
1933                                 case ICMD_IF_ICMPLT:
1934                                 case ICMD_IF_ICMPGE:
1935                                 case ICMD_IF_ICMPGT:
1936                                 case ICMD_IF_ICMPLE:
1937                                 case ICMD_IF_LCMPEQ:
1938                                 case ICMD_IF_LCMPNE:
1939                                 case ICMD_IF_LCMPLT:
1940                                 case ICMD_IF_LCMPGE:
1941                                 case ICMD_IF_LCMPGT:
1942                                 case ICMD_IF_LCMPLE:
1943                                 case ICMD_IF_ACMPEQ:
1944                                 case ICMD_IF_ACMPNE:
1945                                         printf(" L%03d", block_index[iptr->op1]);
1946                                         break;
1947                                 case ICMD_TABLESWITCH:
1948                                         s4ptr = iptr->val.a;
1949                                         printf(" L%03d;", block_index[*s4ptr++]); /* default */
1950                                         j = *s4ptr++;                               /* low     */
1951                                         j = *s4ptr++ - j;                           /* high    */
1952                                         while (j >= 0) {
1953                                                 printf(" L%03d", block_index[*s4ptr++]);
1954                                                 j--;
1955                                                 }
1956                                         break;
1957                                 case ICMD_LOOKUPSWITCH:
1958                                         s4ptr = iptr->val.a;
1959                                         printf(" L%d", block_index[*s4ptr++]);   /* default */
1960                                         j = *s4ptr++;                               /* count   */
1961                                         while (--j >= 0) {
1962                                                 printf(" L%03d", block_index[s4ptr[1]]);
1963                                                 s4ptr += 2;
1964                                                 }
1965                                         break;
1966                                 }
1967                         printf("\n");
1968                         }
1969
1970                 if (showdisassemble && (!deadcode)) {
1971                         printf("\n");
1972                         i = block[b].mpc;
1973                         s4ptr = (s4 *) (method->mcode + dseglen + i);
1974                         for (; i < block[b + 1].mpc; i += 4, s4ptr++) {
1975                                 disassinstr(*s4ptr, i);
1976                                 }
1977                         printf("\n");
1978                         }
1979         }
1980         i = block[b].mpc;
1981         s4ptr = (s4 *) (method->mcode + dseglen + i);
1982         if (showdisassemble && (s4ptr < (s4 *) (method->mcode + method->mcodelength))) {
1983                 printf("\n");
1984                 for (; s4ptr < (s4 *) (method->mcode + method->mcodelength); i += 4, s4ptr++) {
1985                         disassinstr(*s4ptr, i);
1986                         }
1987                 printf("\n");
1988                 }
1989 }
1990
1991
1992 /*
1993  * These are local overrides for various environment variables in Emacs.
1994  * Please do not remove this and leave it at the end of the file, where
1995  * Emacs will automagically detect them.
1996  * ---------------------------------------------------------------------
1997  * Local variables:
1998  * mode: c
1999  * indent-tabs-mode: t
2000  * c-basic-offset: 4
2001  * tab-width: 4
2002  * End:
2003  */