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         void* *tptr;
 169         xtable *ex;
 170
 171         arguments_num = 0;
 172         new = stack;
 173         loops = 0;
 174         block[0].flags = BBREACHED;
 175         block[0].instack = 0;
 176         block[0].indepth = 0;
 177
 178         for (i = 0; i < exceptiontablelength; i++) {
 179                 bptr = &block[block_index[extable[i].handlerpc]];
 180                 bptr->flags = BBREACHED;
 181                 bptr->type = BBTYPE_EXH;
 182                 bptr->instack = new;
 183                 bptr->indepth = 1;
 184                 bptr->pre_count = 10000;
 185                 STACKRESET;
 186                 NEWXSTACK;
 187                 }
 188
 189 #ifdef CONDITIONAL_LOADCONST
 190         b_count = block_count;
 191         bptr = block;
 192         while (--b_count >= 0) {
 193                 if (bptr->icount != 0) {
 194                         iptr = bptr->iinstr + bptr->icount - 1;
 195                         switch (iptr->opc) {
 196                                 case ICMD_RET:
 197                                 case ICMD_RETURN:
 198                                 case ICMD_IRETURN:
 199                                 case ICMD_LRETURN:
 200                                 case ICMD_FRETURN:
 201                                 case ICMD_DRETURN:
 202                                 case ICMD_ARETURN:
 203                                 case ICMD_ATHROW:
 204                                         break;
 205
 206                                 case ICMD_IFEQ:
 207                                 case ICMD_IFNE:
 208                                 case ICMD_IFLT:
 209                                 case ICMD_IFGE:
 210                                 case ICMD_IFGT:
 211                                 case ICMD_IFLE:
 212
 213                                 case ICMD_IFNULL:
 214                                 case ICMD_IFNONNULL:
 215
 216                                 case ICMD_IF_ICMPEQ:
 217                                 case ICMD_IF_ICMPNE:
 218                                 case ICMD_IF_ICMPLT:
 219                                 case ICMD_IF_ICMPGE:
 220                                 case ICMD_IF_ICMPGT:
 221                                 case ICMD_IF_ICMPLE:
 222
 223                                 case ICMD_IF_ACMPEQ:
 224                                 case ICMD_IF_ACMPNE:
 225                                         bptr[1].pre_count++;
 226                                 case ICMD_GOTO:
 227                                         block[block_index[iptr->op1]].pre_count++;
 228                                         break;
 229
 230                                 case ICMD_TABLESWITCH:
 231                                         s4ptr = iptr->val.a;
 232                                         block[block_index[*s4ptr++]].pre_count++;   /* default */
 233                                         i = *s4ptr++;                               /* low     */
 234                                         i = *s4ptr++ - i + 1;                       /* high    */
 235                                         while (--i >= 0) {
 236                                                 block[block_index[*s4ptr++]].pre_count++;
 237                                                 }
 238                                         break;
 239
 240                                 case ICMD_LOOKUPSWITCH:
 241                                         s4ptr = iptr->val.a;
 242                                         block[block_index[*s4ptr++]].pre_count++;   /* default */
 243                                         i = *s4ptr++;                               /* count   */
 244                                         while (--i >= 0) {
 245                                                 block[block_index[s4ptr[1]]].pre_count++;
 246                                                 s4ptr += 2;
 247                                                 }
 248                                         break;
 249                                 default:
 250                                         bptr[1].pre_count++;
 251                                         break;
 252                                 }
 253                         }
 254                 bptr++;
 255                 }
 256 #endif
 257
 258
 259         do {
 260                 loops++;
 261                 b_count = block_count;
 262                 bptr = block;
 263                 superblockend = true;
 264                 repeat = false;
 265                 STACKRESET;
 266                 deadcode = true;
 267                 while (--b_count >= 0) {
 268                         if (bptr->flags == BBDELETED) {
 269                                 /* do nothing */
 270                                 }
 271                         else if (superblockend && (bptr->flags < BBREACHED))
 272                                 repeat = true;
 273                         else if (bptr->flags <= BBREACHED) {
 274                                 if (superblockend)
 275                                         stackdepth = bptr->indepth;
 276                                 else if (bptr->flags < BBREACHED) {
 277                                         COPYCURSTACK(copy);
 278                                         bptr->instack = copy;
 279                                         bptr->indepth = stackdepth;
 280                                         }
 281                                 else if (bptr->indepth != stackdepth) {
 282                                         show_icmd_method();
 283                                         panic("Stack depth mismatch");
 284
 285                                         }
 286                                 curstack = bptr->instack;
 287                                 deadcode = false;
 288                                 superblockend = false;
 289                                 bptr->flags = BBFINISHED;
 290                                 len = bptr->icount;
 291                                 iptr = bptr->iinstr;
 292                                 b_index = bptr - block;
 293                                 while (--len >= 0)  {
 294                                         opcode = iptr->opc;
 295                                         iptr->target = NULL;
 296                                         switch (opcode) {
 297
 298                                                 /* pop 0 push 0 */
 299
 300                                                 case ICMD_NOP:
 301                                                 case ICMD_CHECKASIZE:
 302
 303                                                 case ICMD_IFEQ_ICONST:
 304                                                 case ICMD_IFNE_ICONST:
 305                                                 case ICMD_IFLT_ICONST:
 306                                                 case ICMD_IFGE_ICONST:
 307                                                 case ICMD_IFGT_ICONST:
 308                                                 case ICMD_IFLE_ICONST:
 309                                                 case ICMD_ELSE_ICONST:
 310                                                         SETDST;
 311                                                         break;
 312
 313                                                 case ICMD_RET:
 314                                                         locals[iptr->op1][TYPE_ADR].type = TYPE_ADR;
 315                                                 case ICMD_RETURN:
 316                                                         COUNT(count_pcmd_return);
 317                                                         SETDST;
 318                                                         superblockend = true;
 319                                                         break;
 320
 321                                                 /* pop 0 push 1 const */
 322
 323                                                 case ICMD_ICONST:
 324                                                         COUNT(count_pcmd_load);
 325                                                         if (len > 0) {
 326                                                                 switch (iptr[1].opc) {
 327                                                                         case ICMD_IADD:
 328                                                                                 iptr[0].opc = ICMD_IADDCONST;
 329 icmd_iconst_tail:
 330                                                                                 iptr[1].opc = ICMD_NOP;
 331                                                                                 OP1_1(TYPE_INT,TYPE_INT);
 332                                                                                 COUNT(count_pcmd_op);
 333                                                                                 break;
 334                                                                         case ICMD_ISUB:
 335                                                                                 iptr[0].opc = ICMD_ISUBCONST;
 336                                                                                 goto icmd_iconst_tail;
 337                                                                         case ICMD_IMUL:
 338                                                                                 iptr[0].opc = ICMD_IMULCONST;
 339                                                                                 goto icmd_iconst_tail;
 340                                                                         case ICMD_IDIV:
 341                                                                                 if (iptr[0].val.i == 0x00000002)
 342                                                                                         iptr[0].val.i = 1;
 343                                                                                 else if (iptr[0].val.i == 0x00000004)
 344                                                                                         iptr[0].val.i = 2;
 345                                                                                 else if (iptr[0].val.i == 0x00000008)
 346                                                                                         iptr[0].val.i = 3;
 347                                                                                 else if (iptr[0].val.i == 0x00000010)
 348                                                                                         iptr[0].val.i = 4;
 349                                                                                 else if (iptr[0].val.i == 0x00000020)
 350                                                                                         iptr[0].val.i = 5;
 351                                                                                 else if (iptr[0].val.i == 0x00000040)
 352                                                                                         iptr[0].val.i = 6;
 353                                                                                 else if (iptr[0].val.i == 0x00000080)
 354                                                                                         iptr[0].val.i = 7;
 355                                                                                 else if (iptr[0].val.i == 0x00000100)
 356                                                                                         iptr[0].val.i = 8;
 357                                                                                 else if (iptr[0].val.i == 0x00000200)
 358                                                                                         iptr[0].val.i = 9;
 359                                                                                 else if (iptr[0].val.i == 0x00000400)
 360                                                                                         iptr[0].val.i = 10;
 361                                                                                 else if (iptr[0].val.i == 0x00000800)
 362                                                                                         iptr[0].val.i = 11;
 363                                                                                 else if (iptr[0].val.i == 0x00001000)
 364                                                                                         iptr[0].val.i = 12;
 365                                                                                 else if (iptr[0].val.i == 0x00002000)
 366                                                                                         iptr[0].val.i = 13;
 367                                                                                 else if (iptr[0].val.i == 0x00004000)
 368                                                                                         iptr[0].val.i = 14;
 369                                                                                 else if (iptr[0].val.i == 0x00008000)
 370                                                                                         iptr[0].val.i = 15;
 371                                                                                 else if (iptr[0].val.i == 0x00010000)
 372                                                                                         iptr[0].val.i = 16;
 373                                                                                 else if (iptr[0].val.i == 0x00020000)
 374                                                                                         iptr[0].val.i = 17;
 375                                                                                 else if (iptr[0].val.i == 0x00040000)
 376                                                                                         iptr[0].val.i = 18;
 377                                                                                 else if (iptr[0].val.i == 0x00080000)
 378                                                                                         iptr[0].val.i = 19;
 379                                                                                 else if (iptr[0].val.i == 0x00100000)
 380                                                                                         iptr[0].val.i = 20;
 381                                                                                 else if (iptr[0].val.i == 0x00200000)
 382                                                                                         iptr[0].val.i = 21;
 383                                                                                 else if (iptr[0].val.i == 0x00400000)
 384                                                                                         iptr[0].val.i = 22;
 385                                                                                 else if (iptr[0].val.i == 0x00800000)
 386                                                                                         iptr[0].val.i = 23;
 387                                                                                 else if (iptr[0].val.i == 0x01000000)
 388                                                                                         iptr[0].val.i = 24;
 389                                                                                 else if (iptr[0].val.i == 0x02000000)
 390                                                                                         iptr[0].val.i = 25;
 391                                                                                 else if (iptr[0].val.i == 0x04000000)
 392                                                                                         iptr[0].val.i = 26;
 393                                                                                 else if (iptr[0].val.i == 0x08000000)
 394                                                                                         iptr[0].val.i = 27;
 395                                                                                 else if (iptr[0].val.i == 0x10000000)
 396                                                                                         iptr[0].val.i = 28;
 397                                                                                 else if (iptr[0].val.i == 0x20000000)
 398                                                                                         iptr[0].val.i = 29;
 399                                                                                 else if (iptr[0].val.i == 0x40000000)
 400                                                                                         iptr[0].val.i = 30;
 401                                                                                 else if (iptr[0].val.i == 0x80000000)
 402                                                                                         iptr[0].val.i = 31;
 403                                                                                 else {
 404                                                                                         PUSHCONST(TYPE_INT);
 405                                                                                         break;
 406                                                                                         }
 407                                                                                 iptr[0].opc = ICMD_IDIVPOW2;
 408                                                                                 goto icmd_iconst_tail;
 409                                                                         case ICMD_IREM:
 410                                                                                 if (iptr[0].val.i == 0x10001) {
 411                                                                                         iptr[0].opc = ICMD_IREM0X10001;
 412                                                                                         goto icmd_iconst_tail;
 413                                                                                         }
 414                                                                                 if ((iptr[0].val.i == 0x00000002) ||
 415                                                                                     (iptr[0].val.i == 0x00000004) ||
 416                                                                                     (iptr[0].val.i == 0x00000008) ||
 417                                                                                     (iptr[0].val.i == 0x00000010) ||
 418                                                                                     (iptr[0].val.i == 0x00000020) ||
 419                                                                                     (iptr[0].val.i == 0x00000040) ||
 420                                                                                     (iptr[0].val.i == 0x00000080) ||
 421                                                                                     (iptr[0].val.i == 0x00000100) ||
 422                                                                                     (iptr[0].val.i == 0x00000200) ||
 423                                                                                     (iptr[0].val.i == 0x00000400) ||
 424                                                                                     (iptr[0].val.i == 0x00000800) ||
 425                                                                                     (iptr[0].val.i == 0x00001000) ||
 426                                                                                     (iptr[0].val.i == 0x00002000) ||
 427                                                                                     (iptr[0].val.i == 0x00004000) ||
 428                                                                                     (iptr[0].val.i == 0x00008000) ||
 429                                                                                     (iptr[0].val.i == 0x00010000) ||
 430                                                                                     (iptr[0].val.i == 0x00020000) ||
 431                                                                                     (iptr[0].val.i == 0x00040000) ||
 432                                                                                     (iptr[0].val.i == 0x00080000) ||
 433                                                                                     (iptr[0].val.i == 0x00100000) ||
 434                                                                                     (iptr[0].val.i == 0x00200000) ||
 435                                                                                     (iptr[0].val.i == 0x00400000) ||
 436                                                                                     (iptr[0].val.i == 0x00800000) ||
 437                                                                                     (iptr[0].val.i == 0x01000000) ||
 438                                                                                     (iptr[0].val.i == 0x02000000) ||
 439                                                                                     (iptr[0].val.i == 0x04000000) ||
 440                                                                                     (iptr[0].val.i == 0x08000000) ||
 441                                                                                     (iptr[0].val.i == 0x10000000) ||
 442                                                                                     (iptr[0].val.i == 0x20000000) ||
 443                                                                                     (iptr[0].val.i == 0x40000000) ||
 444                                                                                     (iptr[0].val.i == 0x80000000)) {
 445                                                                                         iptr[0].opc = ICMD_IREMPOW2;
 446                                                                                         iptr[0].val.i -= 1;
 447                                                                                         goto icmd_iconst_tail;
 448                                                                                         }
 449                                                                                 PUSHCONST(TYPE_INT);
 450                                                                                 break;
 451                                                                         case ICMD_IAND:
 452                                                                                 iptr[0].opc = ICMD_IANDCONST;
 453                                                                                 goto icmd_iconst_tail;
 454                                                                         case ICMD_IOR:
 455                                                                                 iptr[0].opc = ICMD_IORCONST;
 456                                                                                 goto icmd_iconst_tail;
 457                                                                         case ICMD_IXOR:
 458                                                                                 iptr[0].opc = ICMD_IXORCONST;
 459                                                                                 goto icmd_iconst_tail;
 460                                                                         case ICMD_ISHL:
 461                                                                                 iptr[0].opc = ICMD_ISHLCONST;
 462                                                                                 goto icmd_iconst_tail;
 463                                                                         case ICMD_ISHR:
 464                                                                                 iptr[0].opc = ICMD_ISHRCONST;
 465                                                                                 goto icmd_iconst_tail;
 466                                                                         case ICMD_IUSHR:
 467                                                                                 iptr[0].opc = ICMD_IUSHRCONST;
 468                                                                                 goto icmd_iconst_tail;
 469                                                                         case ICMD_IF_ICMPEQ:
 470                                                                                 iptr[0].opc = ICMD_IFEQ;
 471 icmd_if_icmp_tail:
 472                                                                                 iptr[0].op1 = iptr[1].op1;
 473                                                                                 bptr->icount--;
 474                                                                                 len--;
 475                                                                                 /* iptr[1].opc = ICMD_NOP; */
 476                                                                                 OP1_0(TYPE_INT);
 477                                                                                 tbptr = block + block_index[iptr->op1];
 478
 479                                                                                 iptr[0].target = (void *) tbptr;
 480
 481                                                                                 MARKREACHED(tbptr, copy);
 482                                                                                 COUNT(count_pcmd_bra);
 483                                                                                 break;
 484                                                                         case ICMD_IF_ICMPLT:
 485                                                                                 iptr[0].opc = ICMD_IFLT;
 486                                                                                 goto icmd_if_icmp_tail;
 487                                                                         case ICMD_IF_ICMPLE:
 488                                                                                 iptr[0].opc = ICMD_IFLE;
 489                                                                                 goto icmd_if_icmp_tail;
 490                                                                         case ICMD_IF_ICMPNE:
 491                                                                                 iptr[0].opc = ICMD_IFNE;
 492                                                                                 goto icmd_if_icmp_tail;
 493                                                                         case ICMD_IF_ICMPGT:
 494                                                                                 iptr[0].opc = ICMD_IFGT;
 495                                                                                 goto icmd_if_icmp_tail;
 496                                                                         case ICMD_IF_ICMPGE:
 497                                                                                 iptr[0].opc = ICMD_IFGE;
 498                                                                                 goto icmd_if_icmp_tail;
 499                                                                         default:
 500                                                                                 PUSHCONST(TYPE_INT);
 501                                                                         }
 502                                                                 }
 503                                                         else
 504                                                                 PUSHCONST(TYPE_INT);
 505                                                         break;
 506                                                 case ICMD_LCONST:
 507                                                         COUNT(count_pcmd_load);
 508                                                         if (len > 0) {
 509                                                                 switch (iptr[1].opc) {
 510                                                                         case ICMD_LADD:
 511                                                                                 iptr[0].opc = ICMD_LADDCONST;
 512 icmd_lconst_tail:
 513                                                                                 iptr[1].opc = ICMD_NOP;
 514                                                                                 OP1_1(TYPE_LNG,TYPE_LNG);
 515                                                                                 COUNT(count_pcmd_op);
 516                                                                                 break;
 517                                                                         case ICMD_LSUB:
 518                                                                                 iptr[0].opc = ICMD_LSUBCONST;
 519                                                                                 goto icmd_lconst_tail;
 520                                                                         case ICMD_LMUL:
 521                                                                                 iptr[0].opc = ICMD_LMULCONST;
 522                                                                                 goto icmd_lconst_tail;
 523                                                                         case ICMD_LDIV:
 524                                                                                 if (iptr[0].val.l == 0x00000002)
 525                                                                                         iptr[0].val.i = 1;
 526                                                                                 else if (iptr[0].val.l == 0x00000004)
 527                                                                                         iptr[0].val.i = 2;
 528                                                                                 else if (iptr[0].val.l == 0x00000008)
 529                                                                                         iptr[0].val.i = 3;
 530                                                                                 else if (iptr[0].val.l == 0x00000010)
 531                                                                                         iptr[0].val.i = 4;
 532                                                                                 else if (iptr[0].val.l == 0x00000020)
 533                                                                                         iptr[0].val.i = 5;
 534                                                                                 else if (iptr[0].val.l == 0x00000040)
 535                                                                                         iptr[0].val.i = 6;
 536                                                                                 else if (iptr[0].val.l == 0x00000080)
 537                                                                                         iptr[0].val.i = 7;
 538                                                                                 else if (iptr[0].val.l == 0x00000100)
 539                                                                                         iptr[0].val.i = 8;
 540                                                                                 else if (iptr[0].val.l == 0x00000200)
 541                                                                                         iptr[0].val.i = 9;
 542                                                                                 else if (iptr[0].val.l == 0x00000400)
 543                                                                                         iptr[0].val.i = 10;
 544                                                                                 else if (iptr[0].val.l == 0x00000800)
 545                                                                                         iptr[0].val.i = 11;
 546                                                                                 else if (iptr[0].val.l == 0x00001000)
 547                                                                                         iptr[0].val.i = 12;
 548                                                                                 else if (iptr[0].val.l == 0x00002000)
 549                                                                                         iptr[0].val.i = 13;
 550                                                                                 else if (iptr[0].val.l == 0x00004000)
 551                                                                                         iptr[0].val.i = 14;
 552                                                                                 else if (iptr[0].val.l == 0x00008000)
 553                                                                                         iptr[0].val.i = 15;
 554                                                                                 else if (iptr[0].val.l == 0x00010000)
 555                                                                                         iptr[0].val.i = 16;
 556                                                                                 else if (iptr[0].val.l == 0x00020000)
 557                                                                                         iptr[0].val.i = 17;
 558                                                                                 else if (iptr[0].val.l == 0x00040000)
 559                                                                                         iptr[0].val.i = 18;
 560                                                                                 else if (iptr[0].val.l == 0x00080000)
 561                                                                                         iptr[0].val.i = 19;
 562                                                                                 else if (iptr[0].val.l == 0x00100000)
 563                                                                                         iptr[0].val.i = 20;
 564                                                                                 else if (iptr[0].val.l == 0x00200000)
 565                                                                                         iptr[0].val.i = 21;
 566                                                                                 else if (iptr[0].val.l == 0x00400000)
 567                                                                                         iptr[0].val.i = 22;
 568                                                                                 else if (iptr[0].val.l == 0x00800000)
 569                                                                                         iptr[0].val.i = 23;
 570                                                                                 else if (iptr[0].val.l == 0x01000000)
 571                                                                                         iptr[0].val.i = 24;
 572                                                                                 else if (iptr[0].val.l == 0x02000000)
 573                                                                                         iptr[0].val.i = 25;
 574                                                                                 else if (iptr[0].val.l == 0x04000000)
 575                                                                                         iptr[0].val.i = 26;
 576                                                                                 else if (iptr[0].val.l == 0x08000000)
 577                                                                                         iptr[0].val.i = 27;
 578                                                                                 else if (iptr[0].val.l == 0x10000000)
 579                                                                                         iptr[0].val.i = 28;
 580                                                                                 else if (iptr[0].val.l == 0x20000000)
 581                                                                                         iptr[0].val.i = 29;
 582                                                                                 else if (iptr[0].val.l == 0x40000000)
 583                                                                                         iptr[0].val.i = 30;
 584                                                                                 else if (iptr[0].val.l == 0x80000000)
 585                                                                                         iptr[0].val.i = 31;
 586                                                                                 else {
 587                                                                                         PUSHCONST(TYPE_LNG);
 588                                                                                         break;
 589                                                                                         }
 590                                                                                 iptr[0].opc = ICMD_LDIVPOW2;
 591                                                                                 goto icmd_lconst_tail;
 592                                                                         case ICMD_LREM:
 593                                                                                 if (iptr[0].val.l == 0x10001) {
 594                                                                                         iptr[0].opc = ICMD_LREM0X10001;
 595                                                                                         goto icmd_lconst_tail;
 596                                                                                         }
 597                                                                                 if ((iptr[0].val.l == 0x00000002) ||
 598                                                                                     (iptr[0].val.l == 0x00000004) ||
 599                                                                                     (iptr[0].val.l == 0x00000008) ||
 600                                                                                     (iptr[0].val.l == 0x00000010) ||
 601                                                                                     (iptr[0].val.l == 0x00000020) ||
 602                                                                                     (iptr[0].val.l == 0x00000040) ||
 603                                                                                     (iptr[0].val.l == 0x00000080) ||
 604                                                                                     (iptr[0].val.l == 0x00000100) ||
 605                                                                                     (iptr[0].val.l == 0x00000200) ||
 606                                                                                     (iptr[0].val.l == 0x00000400) ||
 607                                                                                     (iptr[0].val.l == 0x00000800) ||
 608                                                                                     (iptr[0].val.l == 0x00001000) ||
 609                                                                                     (iptr[0].val.l == 0x00002000) ||
 610                                                                                     (iptr[0].val.l == 0x00004000) ||
 611                                                                                     (iptr[0].val.l == 0x00008000) ||
 612                                                                                     (iptr[0].val.l == 0x00010000) ||
 613                                                                                     (iptr[0].val.l == 0x00020000) ||
 614                                                                                     (iptr[0].val.l == 0x00040000) ||
 615                                                                                     (iptr[0].val.l == 0x00080000) ||
 616                                                                                     (iptr[0].val.l == 0x00100000) ||
 617                                                                                     (iptr[0].val.l == 0x00200000) ||
 618                                                                                     (iptr[0].val.l == 0x00400000) ||
 619                                                                                     (iptr[0].val.l == 0x00800000) ||
 620                                                                                     (iptr[0].val.l == 0x01000000) ||
 621                                                                                     (iptr[0].val.l == 0x02000000) ||
 622                                                                                     (iptr[0].val.l == 0x04000000) ||
 623                                                                                     (iptr[0].val.l == 0x08000000) ||
 624                                                                                     (iptr[0].val.l == 0x10000000) ||
 625                                                                                     (iptr[0].val.l == 0x20000000) ||
 626                                                                                     (iptr[0].val.l == 0x40000000) ||
 627                                                                                     (iptr[0].val.l == 0x80000000)) {
 628                                                                                         iptr[0].opc = ICMD_LREMPOW2;
 629                                                                                         iptr[0].val.l -= 1;
 630                                                                                         goto icmd_lconst_tail;
 631                                                                                         }
 632                                                                                 PUSHCONST(TYPE_LNG);
 633                                                                                 break;
 634                                                                         case ICMD_LAND:
 635                                                                                 iptr[0].opc = ICMD_LANDCONST;
 636                                                                                 goto icmd_lconst_tail;
 637                                                                         case ICMD_LOR:
 638                                                                                 iptr[0].opc = ICMD_LORCONST;
 639                                                                                 goto icmd_lconst_tail;
 640                                                                         case ICMD_LXOR:
 641                                                                                 iptr[0].opc = ICMD_LXORCONST;
 642                                                                                 goto icmd_lconst_tail;
 643                                                                         case ICMD_LSHL:
 644                                                                                 iptr[0].opc = ICMD_LSHLCONST;
 645                                                                                 goto icmd_lconst_tail;
 646                                                                         case ICMD_LSHR:
 647                                                                                 iptr[0].opc = ICMD_LSHRCONST;
 648                                                                                 goto icmd_lconst_tail;
 649                                                                         case ICMD_LUSHR:
 650                                                                                 iptr[0].opc = ICMD_LUSHRCONST;
 651                                                                                 goto icmd_lconst_tail;
 652                                                                         case ICMD_LCMP:
 653                                                                                 if ((len > 1) && (iptr[2].val.i == 0)) {
 654                                                                                         switch (iptr[2].opc) {
 655                                                                                         case ICMD_IFEQ:
 656                                                                                                 iptr[0].opc = ICMD_IF_LEQ;
 657 icmd_lconst_lcmp_tail:
 658                                                                                                 iptr[0].op1 = iptr[2].op1;
 659                                                                                                 bptr->icount -= 2;
 660                                                                                                 len -= 2;
 661                                                                                                 /* iptr[1].opc = ICMD_NOP;
 662                                                                                                 iptr[2].opc = ICMD_NOP; */
 663                                                                                                 OP1_0(TYPE_LNG);
 664                                                                                                 tbptr = block + block_index[iptr->op1];
 665
 666                                                                                                 iptr[0].target = (void *) tbptr;
 667
 668                                                                                                 MARKREACHED(tbptr, copy);
 669                                                                                                 COUNT(count_pcmd_bra);
 670                                                                                                 COUNT(count_pcmd_op);
 671                                                                                                 break;
 672                                                                                         case ICMD_IFNE:
 673                                                                                                 iptr[0].opc = ICMD_IF_LNE;
 674                                                                                                 goto icmd_lconst_lcmp_tail;
 675                                                                                         case ICMD_IFLT:
 676                                                                                                 iptr[0].opc = ICMD_IF_LLT;
 677                                                                                                 goto icmd_lconst_lcmp_tail;
 678                                                                                         case ICMD_IFGT:
 679                                                                                                 iptr[0].opc = ICMD_IF_LGT;
 680                                                                                                 goto icmd_lconst_lcmp_tail;
 681                                                                                         case ICMD_IFLE:
 682                                                                                                 iptr[0].opc = ICMD_IF_LLE;
 683                                                                                                 goto icmd_lconst_lcmp_tail;
 684                                                                                         case ICMD_IFGE:
 685                                                                                                 iptr[0].opc = ICMD_IF_LGE;
 686                                                                                                 goto icmd_lconst_lcmp_tail;
 687                                                                                         default:
 688                                                                                                 PUSHCONST(TYPE_LNG);
 689                                                                                         } /* switch (iptr[2].opc) */
 690                                                                                         } /* if (iptr[2].val.i == 0) */
 691                                                                                 else
 692                                                                                         PUSHCONST(TYPE_LNG);
 693                                                                                 break;
 694                                                                         default:
 695                                                                                 PUSHCONST(TYPE_LNG);
 696                                                                         }
 697                                                                 }
 698                                                         else
 699                                                                 PUSHCONST(TYPE_LNG);
 700                                                         break;
 701                                                 case ICMD_FCONST:
 702                                                         COUNT(count_pcmd_load);
 703                                                         PUSHCONST(TYPE_FLT);
 704                                                         break;
 705                                                 case ICMD_DCONST:
 706                                                         COUNT(count_pcmd_load);
 707                                                         PUSHCONST(TYPE_DBL);
 708                                                         break;
 709                                                 case ICMD_ACONST:
 710                                                         COUNT(count_pcmd_load);
 711                                                         PUSHCONST(TYPE_ADR);
 712                                                         break;
 713
 714                                                 /* pop 0 push 1 load */
 715
 716                                                 case ICMD_ILOAD:
 717                                                 case ICMD_LLOAD:
 718                                                 case ICMD_FLOAD:
 719                                                 case ICMD_DLOAD:
 720                                                 case ICMD_ALOAD:
 721                                                         COUNT(count_load_instruction);
 722                                                         i = opcode-ICMD_ILOAD;
 723                                                         locals[iptr->op1][i].type = i;
 724                                                         LOAD(i, LOCALVAR, iptr->op1);
 725                                                         break;
 726
 727                                                 /* pop 2 push 1 */
 728
 729                                                 case ICMD_IALOAD:
 730                                                 case ICMD_LALOAD:
 731                                                 case ICMD_FALOAD:
 732                                                 case ICMD_DALOAD:
 733                                                 case ICMD_AALOAD:
 734                                                         COUNT(count_check_null);
 735                                                         COUNT(count_check_bound);
 736                                                         COUNT(count_pcmd_mem);
 737                                                         OP2IAT_1(opcode-ICMD_IALOAD);
 738                                                         break;
 739
 740                                                 case ICMD_BALOAD:
 741                                                 case ICMD_CALOAD:
 742                                                 case ICMD_SALOAD:
 743                                                         COUNT(count_check_null);
 744                                                         COUNT(count_check_bound);
 745                                                         COUNT(count_pcmd_mem);
 746                                                         OP2IAT_1(TYPE_INT);
 747                                                         break;
 748
 749                                                 /* pop 0 push 0 iinc */
 750
 751                                                 case ICMD_IINC:
 752 #ifdef STATISTICS
 753                                                         i = stackdepth;
 754                                                         if (i >= 10)
 755                                                                 count_store_depth[10]++;
 756                                                         else
 757                                                                 count_store_depth[i]++;
 758 #endif
 759                                                         copy = curstack;
 760                                                         i = stackdepth - 1;
 761                                                         while (copy) {
 762                                                                 if ((copy->varkind == LOCALVAR) &&
 763                                                                     (copy->varnum == curstack->varnum)) {
 764                                                                         copy->varkind = TEMPVAR;
 765                                                                         copy->varnum = i;
 766                                                                         }
 767                                                                 i--;
 768                                                                 copy = copy->prev;
 769                                                                 }
 770                                                         SETDST;
 771                                                         break;
 772
 773                                                 /* pop 1 push 0 store */
 774
 775                                                 case ICMD_ISTORE:
 776                                                 case ICMD_LSTORE:
 777                                                 case ICMD_FSTORE:
 778                                                 case ICMD_DSTORE:
 779                                                 case ICMD_ASTORE:
 780                                                         i = opcode-ICMD_ISTORE;
 781                                                         locals[iptr->op1][i].type = i;
 782 #ifdef STATISTICS
 783                                                         count_pcmd_store++;
 784                                                         i = new - curstack;
 785                                                         if (i >= 20)
 786                                                                 count_store_length[20]++;
 787                                                         else
 788                                                                 count_store_length[i]++;
 789                                                         i = stackdepth - 1;
 790                                                         if (i >= 10)
 791                                                                 count_store_depth[10]++;
 792                                                         else
 793                                                                 count_store_depth[i]++;
 794 #endif
 795                                                         copy = curstack->prev;
 796                                                         i = stackdepth - 2;
 797                                                         while (copy) {
 798                                                                 if ((copy->varkind == LOCALVAR) &&
 799                                                                     (copy->varnum == curstack->varnum)) {
 800                                                                         copy->varkind = TEMPVAR;
 801                                                                         copy->varnum = i;
 802                                                                         }
 803                                                                 i--;
 804                                                                 copy = copy->prev;
 805                                                                 }
 806                                                         if ((new - curstack) == 1) {
 807                                                                 curstack->varkind = LOCALVAR;
 808                                                                 curstack->varnum = iptr->op1;
 809                                                                 };
 810                                                         STORE(opcode-ICMD_ISTORE);
 811                                                         break;
 812
 813                                                 /* pop 3 push 0 */
 814
 815                                                 case ICMD_IASTORE:
 816                                                 case ICMD_LASTORE:
 817                                                 case ICMD_FASTORE:
 818                                                 case ICMD_DASTORE:
 819                                                 case ICMD_AASTORE:
 820                                                         COUNT(count_check_null);
 821                                                         COUNT(count_check_bound);
 822                                                         COUNT(count_pcmd_mem);
 823                                                         OP3TIA_0(opcode-ICMD_IASTORE);
 824                                                         break;
 825                                                 case ICMD_BASTORE:
 826                                                 case ICMD_CASTORE:
 827                                                 case ICMD_SASTORE:
 828                                                         COUNT(count_check_null);
 829                                                         COUNT(count_check_bound);
 830                                                         COUNT(count_pcmd_mem);
 831                                                         OP3TIA_0(TYPE_INT);
 832                                                         break;
 833
 834                                                 /* pop 1 push 0 */
 835
 836                                                 case ICMD_POP:
 837                                                         OP1_0ANY;
 838                                                         break;
 839
 840                                                 case ICMD_IRETURN:
 841                                                 case ICMD_LRETURN:
 842                                                 case ICMD_FRETURN:
 843                                                 case ICMD_DRETURN:
 844                                                 case ICMD_ARETURN:
 845                                                         COUNT(count_pcmd_return);
 846                                                         OP1_0(opcode-ICMD_IRETURN);
 847                                                         superblockend = true;
 848                                                         break;
 849
 850                                                 case ICMD_ATHROW:
 851                                                         COUNT(count_check_null);
 852                                                         OP1_0(TYPE_ADR);
 853                                                         STACKRESET;
 854                                                         SETDST;
 855                                                         superblockend = true;
 856                                                         break;
 857
 858                                                 case ICMD_PUTSTATIC:
 859                                                         COUNT(count_pcmd_mem);
 860                                                         OP1_0(iptr->op1);
 861                                                         break;
 862
 863                                                 /* pop 1 push 0 branch */
 864
 865                                                 case ICMD_IFNULL:
 866                                                 case ICMD_IFNONNULL:
 867                                                         COUNT(count_pcmd_bra);
 868                                                         OP1_0(TYPE_ADR);
 869                                                         tbptr = block + block_index[iptr->op1];
 870
 871                                                         iptr[0].target = (void *) tbptr;
 872
 873                                                         MARKREACHED(tbptr, copy);
 874                                                         break;
 875
 876                                                 case ICMD_IFEQ:
 877                                                 case ICMD_IFNE:
 878                                                 case ICMD_IFLT:
 879                                                 case ICMD_IFGE:
 880                                                 case ICMD_IFGT:
 881                                                 case ICMD_IFLE:
 882                                                         COUNT(count_pcmd_bra);
 883 #ifdef CONDITIONAL_LOADCONST
 884                                                         {
 885                                                         tbptr = block + b_index;
 886                                                         if ((b_count >= 3) &&
 887                                                             ((b_index + 2) == block_index[iptr[0].op1]) &&
 888                                                             (tbptr[1].pre_count == 1) &&
 889                                                             (iptr[1].opc == ICMD_ICONST) &&
 890                                                             (iptr[2].opc == ICMD_GOTO)   &&
 891                                                             ((b_index + 3) == block_index[iptr[2].op1]) &&
 892                                                             (tbptr[2].pre_count == 1) &&
 893                                                             (iptr[3].opc == ICMD_ICONST)) {
 894                                                                 OP1_1(TYPE_INT, TYPE_INT);
 895                                                                 switch (iptr[0].opc) {
 896                                                                         case ICMD_IFEQ:
 897                                                                                 iptr[0].opc = ICMD_IFNE_ICONST;
 898                                                                                 break;
 899                                                                         case ICMD_IFNE:
 900                                                                                 iptr[0].opc = ICMD_IFEQ_ICONST;
 901                                                                                 break;
 902                                                                         case ICMD_IFLT:
 903                                                                                 iptr[0].opc = ICMD_IFGE_ICONST;
 904                                                                                 break;
 905                                                                         case ICMD_IFGE:
 906                                                                                 iptr[0].opc = ICMD_IFLT_ICONST;
 907                                                                                 break;
 908                                                                         case ICMD_IFGT:
 909                                                                                 iptr[0].opc = ICMD_IFLE_ICONST;
 910                                                                                 break;
 911                                                                         case ICMD_IFLE:
 912                                                                                 iptr[0].opc = ICMD_IFGT_ICONST;
 913                                                                                 break;
 914                                                                         }
 915                                                                 iptr[0].val.i = iptr[1].val.i;
 916                                                                 iptr[1].opc = ICMD_ELSE_ICONST;
 917                                                                 iptr[1].val.i = iptr[3].val.i;
 918                                                                 iptr[2].opc = ICMD_NOP;
 919                                                                 iptr[3].opc = ICMD_NOP;
 920                                                                 tbptr[1].flags = BBDELETED;
 921                                                                 tbptr[2].flags = BBDELETED;
 922                                                                 tbptr[1].icount = 0;
 923                                                                 tbptr[2].icount = 0;
 924                                                                 if (tbptr[3].pre_count == 2) {
 925                                                                         len += tbptr[3].icount + 3;
 926                                                                         bptr->icount += tbptr[3].icount + 3;
 927                                                                         tbptr[3].flags = BBDELETED;
 928                                                                         tbptr[3].icount = 0;
 929                                                                         b_index++;
 930                                                                         }
 931                                                                 else {
 932                                                                         bptr->icount++;
 933                                                                         len ++;
 934                                                                         }
 935                                                                 b_index += 2;
 936                                                                 break;
 937                                                                 }
 938                                                         }
 939 #endif
 940                                                         OP1_0(TYPE_INT);
 941                                                         tbptr = block + block_index[iptr->op1];
 942
 943                                                         iptr[0].target = (void *) tbptr;
 944
 945                                                         MARKREACHED(tbptr, copy);
 946                                                         break;
 947
 948                                                 /* pop 0 push 0 branch */
 949
 950                                                 case ICMD_GOTO:
 951                                                         COUNT(count_pcmd_bra);
 952                                                         tbptr = block + block_index[iptr->op1];
 953
 954                                                         iptr[0].target = (void *) tbptr;
 955
 956                                                         MARKREACHED(tbptr, copy);
 957                                                         SETDST;
 958                                                         superblockend = true;
 959                                                         break;
 960
 961                                                 /* pop 1 push 0 table branch */
 962
 963                                                 case ICMD_TABLESWITCH:
 964                                                         COUNT(count_pcmd_table);
 965                                                         OP1_0(TYPE_INT);
 966                                                         s4ptr = iptr->val.a;
 967                                                         tbptr = block + block_index[*s4ptr++]; /* default */
 968                                                         MARKREACHED(tbptr, copy);
 969                                                         i = *s4ptr++;                          /* low     */
 970                                                         i = *s4ptr++ - i + 1;                  /* high    */
 971
 972                                                         tptr = DMNEW(void*, i+1);
 973                                                         iptr->target = (void *) tptr;
 974
 975                                                         tptr[0] = (void *) tbptr;
 976                                                         tptr++;
 977
 978                                                         while (--i >= 0) {
 979                                                                 tbptr = block + block_index[*s4ptr++];
 980
 981                                                                 tptr[0] = (void *) tbptr;
 982                                                                 tptr++;
 983
 984                                                                 MARKREACHED(tbptr, copy);
 985                                                                 }
 986                                                         SETDST;
 987                                                         superblockend = true;
 988                                                         break;
 989
 990                                                 /* pop 1 push 0 table branch */
 991
 992                                                 case ICMD_LOOKUPSWITCH:
 993                                                         COUNT(count_pcmd_table);
 994                                                         OP1_0(TYPE_INT);
 995                                                         s4ptr = iptr->val.a;
 996                                                         tbptr = block + block_index[*s4ptr++]; /* default */
 997                                                         MARKREACHED(tbptr, copy);
 998                                                         i = *s4ptr++;                          /* count   */
 999
1000                                                         tptr = DMNEW(void*, i+1);
1001                                                         iptr->target = (void *) tptr;
1002
1003                                                         tptr[0] = (void *) tbptr;
1004                                                         tptr++;
1005
1006                                                         while (--i >= 0) {
1007                                                                 tbptr = block + block_index[s4ptr[1]];
1008
1009                                                                 tptr[0] = (void *) tbptr;
1010                                                                 tptr++;
1011
1012                                                                 MARKREACHED(tbptr, copy);
1013                                                                 s4ptr += 2;
1014                                                                 }
1015                                                         SETDST;
1016                                                         superblockend = true;
1017                                                         break;
1018
1019                                                 case ICMD_NULLCHECKPOP:
1020                                                 case ICMD_MONITORENTER:
1021                                                         COUNT(count_check_null);
1022                                                 case ICMD_MONITOREXIT:
1023                                                         OP1_0(TYPE_ADR);
1024                                                         break;
1025
1026                                                 /* pop 2 push 0 branch */
1027
1028                                                 case ICMD_IF_ICMPEQ:
1029                                                 case ICMD_IF_ICMPNE:
1030                                                 case ICMD_IF_ICMPLT:
1031                                                 case ICMD_IF_ICMPGE:
1032                                                 case ICMD_IF_ICMPGT:
1033                                                 case ICMD_IF_ICMPLE:
1034                                                         COUNT(count_pcmd_bra);
1035                                                         OP2_0(TYPE_INT);
1036                                                         tbptr = block + block_index[iptr->op1];
1037
1038                                                         iptr[0].target = (void *) tbptr;
1039
1040                                                         MARKREACHED(tbptr, copy);
1041                                                         break;
1042
1043                                                 case ICMD_IF_ACMPEQ:
1044                                                 case ICMD_IF_ACMPNE:
1045                                                         COUNT(count_pcmd_bra);
1046                                                         OP2_0(TYPE_ADR);
1047                                                         tbptr = block + block_index[iptr->op1];
1048
1049                                                         iptr[0].target = (void *) tbptr;
1050
1051                                                         MARKREACHED(tbptr, copy);
1052                                                         break;
1053
1054                                                 /* pop 2 push 0 */
1055
1056                                                 case ICMD_PUTFIELD:
1057                                                         COUNT(count_check_null);
1058                                                         COUNT(count_pcmd_mem);
1059                                                         OPTT2_0(iptr->op1,TYPE_ADR);
1060                                                         break;
1061
1062                                                 case ICMD_POP2:
1063                                                         if (! IS_2_WORD_TYPE(curstack->type)) {
1064                                                                 OP1_0ANY;                /* second pop */
1065                                                                 }
1066                                                         else
1067                                                                 iptr->opc = ICMD_POP;
1068                                                         OP1_0ANY;
1069                                                         break;
1070
1071                                                 /* pop 0 push 1 dup */
1072
1073                                                 case ICMD_DUP:
1074                                                         COUNT(count_dup_instruction);
1075                                                         DUP;
1076                                                         break;
1077
1078                                                 case ICMD_DUP2:
1079                                                         if (IS_2_WORD_TYPE(curstack->type)) {
1080                                                                 iptr->opc = ICMD_DUP;
1081                                                                 DUP;
1082                                                                 }
1083                                                         else {
1084                                                                 copy = curstack;
1085                                                                 NEWSTACK(copy->prev->type, copy->prev->varkind,
1086                                                                          copy->prev->varnum);
1087                                                                 NEWSTACK(copy->type, copy->varkind,
1088                                                                          copy->varnum);
1089                                                                 SETDST;
1090                                                                 stackdepth+=2;
1091                                                                 }
1092                                                         break;
1093
1094                                                 /* pop 2 push 3 dup */
1095
1096                                                 case ICMD_DUP_X1:
1097                                                         DUP_X1;
1098                                                         break;
1099
1100                                                 case ICMD_DUP2_X1:
1101                                                         if (IS_2_WORD_TYPE(curstack->type)) {
1102                                                                 iptr->opc = ICMD_DUP_X1;
1103                                                                 DUP_X1;
1104                                                                 }
1105                                                         else {
1106                                                                 DUP2_X1;
1107                                                                 }
1108                                                         break;
1109
1110                                                 /* pop 3 push 4 dup */
1111
1112                                                 case ICMD_DUP_X2:
1113                                                         if (IS_2_WORD_TYPE(curstack[-1].type)) {
1114                                                                 iptr->opc = ICMD_DUP_X1;
1115                                                                 DUP_X1;
1116                                                                 }
1117                                                         else {
1118                                                                 DUP_X2;
1119                                                                 }
1120                                                         break;
1121
1122                                                 case ICMD_DUP2_X2:
1123                                                         if (IS_2_WORD_TYPE(curstack->type)) {
1124                                                                 if (IS_2_WORD_TYPE(curstack[-1].type)) {
1125                                                                         iptr->opc = ICMD_DUP_X1;
1126                                                                         DUP_X1;
1127                                                                         }
1128                                                                 else {
1129                                                                         iptr->opc = ICMD_DUP_X2;
1130                                                                         DUP_X2;
1131                                                                         }
1132                                                                 }
1133                                                         else
1134                                                                 if (IS_2_WORD_TYPE(curstack[-2].type)) {
1135                                                                         iptr->opc = ICMD_DUP2_X1;
1136                                                                         DUP2_X1;
1137                                                                         }
1138                                                                 else {
1139                                                                         DUP2_X2;
1140                                                                         }
1141                                                         break;
1142
1143                                                 /* pop 2 push 2 swap */
1144
1145                                                 case ICMD_SWAP:
1146                                                         SWAP;
1147                                                         break;
1148
1149                                                 /* pop 2 push 1 */
1150
1151                                                 case ICMD_IDIV:
1152                                                         if (!(SUPPORT_DIVISION)) {
1153                                                                 iptr[0].opc = ICMD_BUILTIN2;
1154                                                                 iptr[0].op1 = TYPE_INT;
1155                                                                 iptr[0].val.a = (functionptr) asm_builtin_idiv;
1156                                                                 isleafmethod = false;
1157                                                                 goto builtin2;
1158                                                                 }
1159
1160                                                 case ICMD_LDIV:
1161                                                         if (!(SUPPORT_DIVISION && SUPPORT_LONG && SUPPORT_LONG_MULDIV)) {
1162                                                                 iptr[0].opc = ICMD_BUILTIN2;
1163                                                                 iptr[0].op1 = TYPE_LNG;
1164                                                                 iptr[0].val.a = (functionptr) asm_builtin_ldiv;
1165                                                                 isleafmethod = false;
1166                                                                 goto builtin2;
1167                                                                 }
1168
1169                                                 case ICMD_IREM:
1170                                                         if (!(SUPPORT_DIVISION)) {
1171                                                                 iptr[0].opc = ICMD_BUILTIN2;
1172                                                                 iptr[0].op1 = TYPE_INT;
1173                                                                 iptr[0].val.a = (functionptr) asm_builtin_irem;
1174                                                                 isleafmethod = false;
1175                                                                 goto builtin2;
1176                                                                 }
1177
1178                                                 case ICMD_LREM:
1179                                                         if (!(SUPPORT_DIVISION && SUPPORT_LONG && SUPPORT_LONG_MULDIV)) {
1180                                                                 iptr[0].opc = ICMD_BUILTIN2;
1181                                                                 iptr[0].op1 = TYPE_LNG;
1182                                                                 iptr[0].val.a = (functionptr) asm_builtin_lrem;
1183                                                                 isleafmethod = false;
1184                                                                 goto builtin2;
1185                                                                 }
1186
1187                                                 case ICMD_IADD:
1188                                                 case ICMD_ISUB:
1189                                                 case ICMD_IMUL:
1190
1191                                                 case ICMD_ISHL:
1192                                                 case ICMD_ISHR:
1193                                                 case ICMD_IUSHR:
1194                                                 case ICMD_IAND:
1195                                                 case ICMD_IOR:
1196                                                 case ICMD_IXOR:
1197                                                         COUNT(count_pcmd_op);
1198                                                         OP2_1(TYPE_INT);
1199                                                         break;
1200
1201                                                 case ICMD_LADD:
1202                                                 case ICMD_LSUB:
1203                                                 case ICMD_LMUL:
1204
1205                                                 case ICMD_LOR:
1206                                                 case ICMD_LAND:
1207                                                 case ICMD_LXOR:
1208                                                         COUNT(count_pcmd_op);
1209                                                         OP2_1(TYPE_LNG);
1210                                                         break;
1211
1212                                                 case ICMD_LSHL:
1213                                                 case ICMD_LSHR:
1214                                                 case ICMD_LUSHR:
1215                                                         COUNT(count_pcmd_op);
1216                                                         OP2IT_1(TYPE_LNG);
1217                                                         break;
1218
1219                                                 case ICMD_FADD:
1220                                                 case ICMD_FSUB:
1221                                                 case ICMD_FMUL:
1222                                                 case ICMD_FDIV:
1223                                                 case ICMD_FREM:
1224                                                         COUNT(count_pcmd_op);
1225                                                         OP2_1(TYPE_FLT);
1226                                                         break;
1227
1228                                                 case ICMD_DADD:
1229                                                 case ICMD_DSUB:
1230                                                 case ICMD_DMUL:
1231                                                 case ICMD_DDIV:
1232                                                 case ICMD_DREM:
1233                                                         COUNT(count_pcmd_op);
1234                                                         OP2_1(TYPE_DBL);
1235                                                         break;
1236
1237                                                 case ICMD_LCMP:
1238                                                         COUNT(count_pcmd_op);
1239                                                         if ((len > 0) && (iptr[1].val.i == 0)) {
1240                                                                 switch (iptr[1].opc) {
1241                                                                         case ICMD_IFEQ:
1242                                                                                 iptr[0].opc = ICMD_IF_LCMPEQ;
1243 icmd_lcmp_if_tail:
1244                                                                                 iptr[0].op1 = iptr[1].op1;
1245                                                                                 len--;
1246                                                                                 bptr->icount--;
1247                                                                                 /* iptr[1].opc = ICMD_NOP; */
1248                                                                                 OP2_0(TYPE_LNG);
1249                                                                                 tbptr = block + block_index[iptr->op1];
1250
1251                                                                                 iptr[0].target = (void *) tbptr;
1252
1253                                                                                 MARKREACHED(tbptr, copy);
1254                                                                                 COUNT(count_pcmd_bra);
1255                                                                                 break;
1256                                                                         case ICMD_IFNE:
1257                                                                                 iptr[0].opc = ICMD_IF_LCMPNE;
1258                                                                                 goto icmd_lcmp_if_tail;
1259                                                                         case ICMD_IFLT:
1260                                                                                 iptr[0].opc = ICMD_IF_LCMPLT;
1261                                                                                 goto icmd_lcmp_if_tail;
1262                                                                         case ICMD_IFGT:
1263                                                                                 iptr[0].opc = ICMD_IF_LCMPGT;
1264                                                                                 goto icmd_lcmp_if_tail;
1265                                                                         case ICMD_IFLE:
1266                                                                                 iptr[0].opc = ICMD_IF_LCMPLE;
1267                                                                                 goto icmd_lcmp_if_tail;
1268                                                                         case ICMD_IFGE:
1269                                                                                 iptr[0].opc = ICMD_IF_LCMPGE;
1270                                                                                 goto icmd_lcmp_if_tail;
1271                                                                         default:
1272                                                                                 OPTT2_1(TYPE_LNG, TYPE_INT);
1273                                                                         }
1274                                                                 }
1275                                                         else
1276                                                                 OPTT2_1(TYPE_LNG, TYPE_INT);
1277                                                         break;
1278                                                 case ICMD_FCMPL:
1279                                                 case ICMD_FCMPG:
1280                                                         COUNT(count_pcmd_op);
1281                                                         OPTT2_1(TYPE_FLT, TYPE_INT);
1282                                                         break;
1283                                                 case ICMD_DCMPL:
1284                                                 case ICMD_DCMPG:
1285                                                         COUNT(count_pcmd_op);
1286                                                         OPTT2_1(TYPE_DBL, TYPE_INT);
1287                                                         break;
1288
1289                                                 /* pop 1 push 1 */
1290
1291                                                 case ICMD_INEG:
1292                                                 case ICMD_INT2BYTE:
1293                                                 case ICMD_INT2CHAR:
1294                                                 case ICMD_INT2SHORT:
1295                                                         COUNT(count_pcmd_op);
1296                                                         OP1_1(TYPE_INT, TYPE_INT);
1297                                                         break;
1298                                                 case ICMD_LNEG:
1299                                                         COUNT(count_pcmd_op);
1300                                                         OP1_1(TYPE_LNG, TYPE_LNG);
1301                                                         break;
1302                                                 case ICMD_FNEG:
1303                                                         COUNT(count_pcmd_op);
1304                                                         OP1_1(TYPE_FLT, TYPE_FLT);
1305                                                         break;
1306                                                 case ICMD_DNEG:
1307                                                         COUNT(count_pcmd_op);
1308                                                         OP1_1(TYPE_DBL, TYPE_DBL);
1309                                                         break;
1310
1311                                                 case ICMD_I2L:
1312                                                         COUNT(count_pcmd_op);
1313                                                         OP1_1(TYPE_INT, TYPE_LNG);
1314                                                         break;
1315                                                 case ICMD_I2F:
1316                                                         COUNT(count_pcmd_op);
1317                                                         OP1_1(TYPE_INT, TYPE_FLT);
1318                                                         break;
1319                                                 case ICMD_I2D:
1320                                                         COUNT(count_pcmd_op);
1321                                                         OP1_1(TYPE_INT, TYPE_DBL);
1322                                                         break;
1323                                                 case ICMD_L2I:
1324                                                         COUNT(count_pcmd_op);
1325                                                         OP1_1(TYPE_LNG, TYPE_INT);
1326                                                         break;
1327                                                 case ICMD_L2F:
1328                                                         COUNT(count_pcmd_op);
1329                                                         OP1_1(TYPE_LNG, TYPE_FLT);
1330                                                         break;
1331                                                 case ICMD_L2D:
1332                                                         COUNT(count_pcmd_op);
1333                                                         OP1_1(TYPE_LNG, TYPE_DBL);
1334                                                         break;
1335                                                 case ICMD_F2I:
1336                                                         COUNT(count_pcmd_op);
1337                                                         OP1_1(TYPE_FLT, TYPE_INT);
1338                                                         break;
1339                                                 case ICMD_F2L:
1340                                                         COUNT(count_pcmd_op);
1341                                                         OP1_1(TYPE_FLT, TYPE_LNG);
1342                                                         break;
1343                                                 case ICMD_F2D:
1344                                                         COUNT(count_pcmd_op);
1345                                                         OP1_1(TYPE_FLT, TYPE_DBL);
1346                                                         break;
1347                                                 case ICMD_D2I:
1348                                                         COUNT(count_pcmd_op);
1349                                                         OP1_1(TYPE_DBL, TYPE_INT);
1350                                                         break;
1351                                                 case ICMD_D2L:
1352                                                         COUNT(count_pcmd_op);
1353                                                         OP1_1(TYPE_DBL, TYPE_LNG);
1354                                                         break;
1355                                                 case ICMD_D2F:
1356                                                         COUNT(count_pcmd_op);
1357                                                         OP1_1(TYPE_DBL, TYPE_FLT);
1358                                                         break;
1359
1360                                                 case ICMD_CHECKCAST:
1361                                                         OP1_1(TYPE_ADR, TYPE_ADR);
1362                                                         break;
1363
1364                                                 case ICMD_ARRAYLENGTH:
1365                                                 case ICMD_INSTANCEOF:
1366                                                         OP1_1(TYPE_ADR, TYPE_INT);
1367                                                         break;
1368
1369                                                 case ICMD_NEWARRAY:
1370                                                 case ICMD_ANEWARRAY:
1371                                                         OP1_1(TYPE_INT, TYPE_ADR);
1372                                                         break;
1373
1374                                                 case ICMD_GETFIELD:
1375                                                         COUNT(count_check_null);
1376                                                         COUNT(count_pcmd_mem);
1377                                                         OP1_1(TYPE_ADR, iptr->op1);
1378                                                         break;
1379
1380                                                 /* pop 0 push 1 */
1381
1382                                                 case ICMD_GETSTATIC:
1383                                                         COUNT(count_pcmd_mem);
1384                                                         OP0_1(iptr->op1);
1385                                                         break;
1386
1387                                                 case ICMD_NEW:
1388                                                         OP0_1(TYPE_ADR);
1389                                                         break;
1390
1391                                                 case ICMD_JSR:
1392                                                         OP0_1(TYPE_ADR);
1393                                                         tbptr = block + block_index[iptr->op1];
1394
1395                                                         iptr[0].target = (void *) tbptr;
1396
1397                                                         tbptr->type=BBTYPE_SBR;
1398                                                         MARKREACHED(tbptr, copy);
1399                                                         OP1_0ANY;
1400                                                         break;
1401
1402                                                 /* pop many push any */
1403
1404                                                 case ICMD_INVOKEVIRTUAL:
1405                                                 case ICMD_INVOKESPECIAL:
1406                                                 case ICMD_INVOKEINTERFACE:
1407                                                 case ICMD_INVOKESTATIC:
1408                                                         COUNT(count_pcmd_met);
1409                                                         {
1410                                                         methodinfo *m = iptr->val.a;
1411                                                         if (m->flags & ACC_STATIC)
1412                                                                 {COUNT(count_check_null);}
1413                                                         i = iptr->op1;
1414                                                         if (i > arguments_num)
1415                                                                 arguments_num = i;
1416                                                         copy = curstack;
1417                                                         while (--i >= 0) {
1418                                                                 if (! (copy->flags & SAVEDVAR)) {
1419                                                                         copy->varkind = ARGVAR;
1420                                                                         copy->varnum = i;
1421                                                                         }
1422                                                                 copy = copy->prev;
1423                                                                 }
1424                                                         while (copy) {
1425                                                                 copy->flags |= SAVEDVAR;
1426                                                                 copy = copy->prev;
1427                                                                 }
1428                                                         i = iptr->op1;
1429                                                         POPMANY(i);
1430                                                         if (m->returntype != TYPE_VOID) {
1431                                                                 OP0_1(m->returntype);
1432                                                                 }
1433                                                         break;
1434                                                         }
1435
1436                                                 case ICMD_BUILTIN3:
1437                                                         if (! (curstack->flags & SAVEDVAR)) {
1438                                                                 curstack->varkind = ARGVAR;
1439                                                                 curstack->varnum = 2;
1440                                                                 }
1441                                                         OP1_0ANY;
1442                                                 case ICMD_BUILTIN2:
1443 builtin2:
1444                                                         if (! (curstack->flags & SAVEDVAR)) {
1445                                                                 curstack->varkind = ARGVAR;
1446                                                                 curstack->varnum = 1;
1447                                                                 }
1448                                                         OP1_0ANY;
1449                                                 case ICMD_BUILTIN1:
1450                                                         if (! (curstack->flags & SAVEDVAR)) {
1451                                                                 curstack->varkind = ARGVAR;
1452                                                                 curstack->varnum = 0;
1453                                                                 }
1454                                                         OP1_0ANY;
1455                                                         copy = curstack;
1456                                                         while (copy) {
1457                                                                 copy->flags |= SAVEDVAR;
1458                                                                 copy = copy->prev;
1459                                                                 }
1460                                                         if (iptr->op1 != TYPE_VOID)
1461                                                                 OP0_1(iptr->op1);
1462                                                         break;
1463
1464                                                 case ICMD_MULTIANEWARRAY:
1465                                                         i = iptr->op1;
1466                                                         if ((i + intreg_argnum) > arguments_num)
1467                                                                 arguments_num = i + intreg_argnum;
1468                                                         copy = curstack;
1469                                                         while (--i >= 0) {
1470                                                                 if (! (copy->flags & SAVEDVAR)) {
1471                                                                         copy->varkind = ARGVAR;
1472                                                                         copy->varnum = i + intreg_argnum;
1473                                                                         }
1474                                                                 copy = copy->prev;
1475                                                                 }
1476                                                         while (copy) {
1477                                                                 copy->flags |= SAVEDVAR;
1478                                                                 copy = copy->prev;
1479                                                                 }
1480                                                         i = iptr->op1;
1481                                                         POPMANY(i);
1482                                                         OP0_1(TYPE_ADR);
1483                                                         break;
1484
1485                                                 default:
1486                                                         printf("ICMD %d at %d\n", iptr->opc, (int)(iptr-instr));
1487                                                         panic("Missing ICMD code during stack analysis");
1488                                                 } /* switch */
1489                                         iptr++;
1490                                         } /* while instructions */
1491                                 bptr->outstack = curstack;
1492                                 bptr->outdepth = stackdepth;
1493                                 BBEND(curstack, i);
1494                                 } /* if */
1495                         else
1496                                 superblockend = true;
1497                         bptr++;
1498                 } /* while blocks */
1499         } while (repeat && ! deadcode);
1500
1501 #ifdef STATISTICS
1502         if (block_count > count_max_basic_blocks)
1503                 count_max_basic_blocks = block_count;
1504         count_basic_blocks += block_count;
1505         if (instr_count > count_max_javainstr)
1506                 count_max_javainstr = instr_count;
1507         count_javainstr += instr_count;
1508         if (stack_count > count_upper_bound_new_stack)
1509                 count_upper_bound_new_stack = stack_count;
1510         if ((new - stack) > count_max_new_stack)
1511                 count_max_new_stack = (new - stack);
1512
1513         b_count = block_count;
1514         bptr = block;
1515         while (--b_count >= 0) {
1516                 if (bptr->flags > BBREACHED) {
1517                         if (bptr->indepth >= 10)
1518                                 count_block_stack[10]++;
1519                         else
1520                                 count_block_stack[bptr->indepth]++;
1521                         len = bptr->icount;
1522                         if (len < 10)
1523                                 count_block_size_distribution[len]++;
1524                         else if (len <= 12)
1525                                 count_block_size_distribution[10]++;
1526                         else if (len <= 14)
1527                                 count_block_size_distribution[11]++;
1528                         else if (len <= 16)
1529                                 count_block_size_distribution[12]++;
1530                         else if (len <= 18)
1531                                 count_block_size_distribution[13]++;
1532                         else if (len <= 20)
1533                                 count_block_size_distribution[14]++;
1534                         else if (len <= 25)
1535                                 count_block_size_distribution[15]++;
1536                         else if (len <= 30)
1537                                 count_block_size_distribution[16]++;
1538                         else
1539                                 count_block_size_distribution[17]++;
1540                         }
1541                 bptr++;
1542                 }
1543
1544         if (loops == 1)
1545                 count_analyse_iterations[0]++;
1546         else if (loops == 2)
1547                 count_analyse_iterations[1]++;
1548         else if (loops == 3)
1549                 count_analyse_iterations[2]++;
1550         else if (loops == 4)
1551                 count_analyse_iterations[3]++;
1552         else
1553                 count_analyse_iterations[4]++;
1554
1555         if (block_count <= 5)
1556                 count_method_bb_distribution[0]++;
1557         else if (block_count <= 10)
1558                 count_method_bb_distribution[1]++;
1559         else if (block_count <= 15)
1560                 count_method_bb_distribution[2]++;
1561         else if (block_count <= 20)
1562                 count_method_bb_distribution[3]++;
1563         else if (block_count <= 30)
1564                 count_method_bb_distribution[4]++;
1565         else if (block_count <= 40)
1566                 count_method_bb_distribution[5]++;
1567         else if (block_count <= 50)
1568                 count_method_bb_distribution[6]++;
1569         else if (block_count <= 75)
1570                 count_method_bb_distribution[7]++;
1571         else
1572                 count_method_bb_distribution[8]++;
1573 #endif
1574 }
1575
1576
1577 static void print_stack(stackptr s) {
1578         int i, j;
1579         stackptr t;
1580
1581         i = maxstack;
1582         t = s;
1583
1584         while (t) {
1585                 i--;
1586                 t = t->prev;
1587                 }
1588         j = maxstack - i;
1589         while (--i >= 0)
1590                 printf("    ");
1591         while (s) {
1592                 j--;
1593                 if (s->flags & SAVEDVAR)
1594                         switch (s->varkind) {
1595                                 case TEMPVAR:
1596                                         if (s->flags & INMEMORY)
1597                                                 printf(" M%02d", s->regoff);
1598                                         else if ((s->type == TYPE_FLT) || (s->type == TYPE_DBL))
1599                                                 printf(" F%02d", s->regoff);
1600                                         else
1601                                                 printf(" %3s", regs[s->regoff]);
1602                                         break;
1603                                 case STACKVAR:
1604                                         printf(" I%02d", s->varnum);
1605                                         break;
1606                                 case LOCALVAR:
1607                                         printf(" L%02d", s->varnum);
1608                                         break;
1609                                 case ARGVAR:
1610                                         printf(" A%02d", s->varnum);
1611                                         break;
1612                                 default:
1613                                         printf(" !%02d", j);
1614                                 }
1615                 else
1616                         switch (s->varkind) {
1617                                 case TEMPVAR:
1618                                         if (s->flags & INMEMORY)
1619                                                 printf(" m%02d", s->regoff);
1620                                         else if ((s->type == TYPE_FLT) || (s->type == TYPE_DBL))
1621                                                 printf(" f%02d", s->regoff);
1622                                         else
1623                                                 printf(" %3s", regs[s->regoff]);
1624                                         break;
1625                                 case STACKVAR:
1626                                         printf(" i%02d", s->varnum);
1627                                         break;
1628                                 case LOCALVAR:
1629                                         printf(" l%02d", s->varnum);
1630                                         break;
1631                                 case ARGVAR:
1632                                         printf(" a%02d", s->varnum);
1633                                         break;
1634                                 default:
1635                                         printf(" ?%02d", j);
1636                                 }
1637                 s = s->prev;
1638                 }
1639 }
1640
1641
1642 #if 0
1643 static void print_reg(stackptr s) {
1644         if (s) {
1645                 if (s->flags & SAVEDVAR)
1646                         switch (s->varkind) {
1647                                 case TEMPVAR:
1648                                         if (s->flags & INMEMORY)
1649                                                 printf(" tm%02d", s->regoff);
1650                                         else
1651                                                 printf(" tr%02d", s->regoff);
1652                                         break;
1653                                 case STACKVAR:
1654                                         printf(" s %02d", s->varnum);
1655                                         break;
1656                                 case LOCALVAR:
1657                                         printf(" l %02d", s->varnum);
1658                                         break;
1659                                 case ARGVAR:
1660                                         printf(" a %02d", s->varnum);
1661                                         break;
1662                                 default:
1663                                         printf(" ! %02d", s->varnum);
1664                                 }
1665                 else
1666                         switch (s->varkind) {
1667                                 case TEMPVAR:
1668                                         if (s->flags & INMEMORY)
1669                                                 printf(" Tm%02d", s->regoff);
1670                                         else
1671                                                 printf(" Tr%02d", s->regoff);
1672                                         break;
1673                                 case STACKVAR:
1674                                         printf(" S %02d", s->varnum);
1675                                         break;
1676                                 case LOCALVAR:
1677                                         printf(" L %02d", s->varnum);
1678                                         break;
1679                                 case ARGVAR:
1680                                         printf(" A %02d", s->varnum);
1681                                         break;
1682                                 default:
1683                                         printf(" ? %02d", s->varnum);
1684                                 }
1685                 }
1686         else
1687                 printf("     ");
1688
1689 }
1690 #endif
1691
1692
1693 static char *builtin_name(functionptr bptr)
1694 {
1695         builtin_descriptor *bdesc = builtin_desc;
1696         while ((bdesc->bptr != NULL) && (bdesc->bptr != bptr))
1697                 bdesc++;
1698         return bdesc->name;
1699 }
1700
1701
1702 static char *jit_type[] = {
1703         "int",
1704         "lng",
1705         "flt",
1706         "dbl",
1707         "adr"
1708 };
1709
1710
1711 static void show_icmd_method()
1712 {
1713         int i, j, last;
1714         int deadcode;
1715         s4  *s4ptr;
1716         instruction *iptr;
1717         basicblock *bptr;
1718         void **tptr;
1719         xtable *ex;
1720
1721         printf("\n");
1722         unicode_fprint(stdout, class->name);
1723         printf(".");
1724         unicode_fprint(stdout, method->name);
1725         printf(" ");
1726         unicode_fprint(stdout, method->descriptor);
1727         printf ("\n\nMax locals: %d\n", (int) maxlocals);
1728         printf ("Max stack:  %d\n", (int) maxstack);
1729
1730         printf ("Exceptions (Number: %d):\n", exceptiontablelength);
1731         for (ex = extable; ex != NULL; ex = ex->down) {
1732                 printf("    L%03d ... ", ex->start->debug_nr );
1733                 printf("L%03d  = ", ex->end->debug_nr);
1734                 printf("L%03d\n", ex->handler->debug_nr);
1735                 }
1736
1737         printf ("Local Table:\n");
1738         for (i = 0; i < maxlocals; i++) {
1739                 printf("   %3d: ", i);
1740                 for (j = TYPE_INT; j <= TYPE_ADR; j++)
1741                         if (locals[i][j].type >= 0) {
1742                                 printf("   (%s) ", jit_type[j]);
1743                                 if (locals[i][j].flags & INMEMORY)
1744                                         printf("m%2d", locals[i][j].regoff);
1745                                 else if ((j == TYPE_FLT) || (j == TYPE_DBL))
1746                                         printf("f%02d", locals[i][j].regoff);
1747                                 else
1748                                         printf("%3s", regs[locals[i][j].regoff]);
1749                                 }
1750                 printf("\n");
1751                 }
1752         printf("\n");
1753
1754         printf ("Interface Table:\n");
1755         for (i = 0; i < maxstack; i++) {
1756                 if ((interfaces[i][0].type >= 0) || (interfaces[i][1].type >= 0) ||
1757                     (interfaces[i][2].type >= 0) || (interfaces[i][3].type >= 0) ||
1758                     (interfaces[i][4].type >= 0)) {
1759                         printf("   %3d: ", i);
1760                         for (j = TYPE_INT; j <= TYPE_ADR; j++)
1761                                 if (interfaces[i][j].type >= 0) {
1762                                         printf("   (%s) ", jit_type[j]);
1763                                         if (interfaces[i][j].flags & SAVEDVAR) {
1764                                                 if (interfaces[i][j].flags & INMEMORY)
1765                                                         printf("M%2d", interfaces[i][j].regoff);
1766                                                 else if ((j == TYPE_FLT) || (j == TYPE_DBL))
1767                                                         printf("F%02d", interfaces[i][j].regoff);
1768                                                 else
1769                                                         printf("%3s", regs[interfaces[i][j].regoff]);
1770                                                 }
1771                                         else {
1772                                                 if (interfaces[i][j].flags & INMEMORY)
1773                                                         printf("m%2d", interfaces[i][j].regoff);
1774                                                 else if ((j == TYPE_FLT) || (j == TYPE_DBL))
1775                                                         printf("f%02d", interfaces[i][j].regoff);
1776                                                 else
1777                                                         printf("%3s", regs[interfaces[i][j].regoff]);
1778                                                 }
1779                                         }
1780                         printf("\n");
1781                         }
1782                 }
1783         printf("\n");
1784
1785         if (showdisassemble) {
1786                 s4ptr = (s4 *) (method->mcode + dseglen);
1787                 for (i = 0; i < block[0].mpc; i += 4, s4ptr++) {
1788                         disassinstr(*s4ptr, i);
1789                         }
1790                 printf("\n");
1791                 }
1792
1793
1794         for (bptr = block; bptr != NULL; bptr = bptr->next)
1795                 if (bptr->flags != BBDELETED) {
1796                 deadcode = bptr->flags <= BBREACHED;
1797                 printf("[");
1798                 if (deadcode)
1799                         for (j = maxstack; j > 0; j--)
1800                                 printf(" ?  ");
1801                 else
1802                         print_stack(bptr->instack);
1803                 printf("] L%03d(%d - %d):\n", bptr->debug_nr, bptr->icount, bptr->pre_count);
1804                 iptr = bptr->iinstr;
1805
1806                 for (i=0; i < bptr->icount; i++, iptr++) {
1807                         printf("[");
1808                         if (deadcode) {
1809                                 for (j = maxstack; j > 0; j--)
1810                                         printf(" ?  ");
1811                                 }
1812                         else
1813                                 print_stack(iptr->dst);
1814                         printf("]     %4d  %s", i, icmd_names[iptr->opc]);
1815                         switch ((int) iptr->opc) {
1816                                 case ICMD_IADDCONST:
1817                                 case ICMD_ISUBCONST:
1818                                 case ICMD_IMULCONST:
1819                                 case ICMD_IDIVPOW2:
1820                                 case ICMD_IREMPOW2:
1821                                 case ICMD_IREM0X10001:
1822                                 case ICMD_IANDCONST:
1823                                 case ICMD_IORCONST:
1824                                 case ICMD_IXORCONST:
1825                                 case ICMD_ISHLCONST:
1826                                 case ICMD_ISHRCONST:
1827                                 case ICMD_IUSHRCONST:
1828                                 case ICMD_ICONST:
1829                                 case ICMD_ELSE_ICONST:
1830                                 case ICMD_IFEQ_ICONST:
1831                                 case ICMD_IFNE_ICONST:
1832                                 case ICMD_IFLT_ICONST:
1833                                 case ICMD_IFGE_ICONST:
1834                                 case ICMD_IFGT_ICONST:
1835                                 case ICMD_IFLE_ICONST:
1836                                         printf(" %d", iptr->val.i);
1837                                         break;
1838                                 case ICMD_LADDCONST:
1839                                 case ICMD_LSUBCONST:
1840                                 case ICMD_LMULCONST:
1841                                 case ICMD_LDIVPOW2:
1842                                 case ICMD_LREMPOW2:
1843                                 case ICMD_LANDCONST:
1844                                 case ICMD_LORCONST:
1845                                 case ICMD_LXORCONST:
1846                                 case ICMD_LSHLCONST:
1847                                 case ICMD_LSHRCONST:
1848                                 case ICMD_LUSHRCONST:
1849                                 case ICMD_LCONST:
1850                                         printf(" %ld", iptr->val.l);
1851                                         break;
1852                                 case ICMD_FCONST:
1853                                         printf(" %f", iptr->val.f);
1854                                         break;
1855                                 case ICMD_DCONST:
1856                                         printf(" %f", iptr->val.d);
1857                                         break;
1858                                 case ICMD_ACONST:
1859                                         printf(" %p", iptr->val.a);
1860                                         break;
1861                                 case ICMD_GETFIELD:
1862                                 case ICMD_PUTFIELD:
1863                                         printf(" %d,", ((fieldinfo *) iptr->val.a)->offset);
1864                                 case ICMD_PUTSTATIC:
1865                                 case ICMD_GETSTATIC:
1866                                         printf(" ");
1867                                         unicode_fprint(stdout,
1868                                                         ((fieldinfo *) iptr->val.a)->name);
1869                                         break;
1870                                 case ICMD_IINC:
1871                                         printf(" %d + %d", iptr->op1, iptr->val.i);
1872                                         break;
1873
1874                             case ICMD_IASTORE:
1875                             case ICMD_SASTORE:
1876                             case ICMD_BASTORE:
1877                             case ICMD_CASTORE:
1878                             case ICMD_LASTORE:
1879                             case ICMD_DASTORE:
1880                             case ICMD_FASTORE:
1881                             case ICMD_AASTORE:
1882
1883                             case ICMD_IALOAD:
1884                             case ICMD_SALOAD:
1885                             case ICMD_BALOAD:
1886                             case ICMD_CALOAD:
1887                             case ICMD_LALOAD:
1888                             case ICMD_DALOAD:
1889                             case ICMD_FALOAD:
1890                             case ICMD_AALOAD:
1891                                         if (iptr->op1 != 0)
1892                                                 printf("(opt.)");
1893                                         break;
1894
1895                                 case ICMD_RET:
1896                                 case ICMD_ILOAD:
1897                                 case ICMD_LLOAD:
1898                                 case ICMD_FLOAD:
1899                                 case ICMD_DLOAD:
1900                                 case ICMD_ALOAD:
1901                                 case ICMD_ISTORE:
1902                                 case ICMD_LSTORE:
1903                                 case ICMD_FSTORE:
1904                                 case ICMD_DSTORE:
1905                                 case ICMD_ASTORE:
1906                                         printf(" %d", iptr->op1);
1907                                         break;
1908                                 case ICMD_NEW:
1909                                         printf(" ");
1910                                         unicode_fprint(stdout,
1911                                                        ((classinfo *) iptr->val.a)->name);
1912                                         break;
1913                                 case ICMD_NEWARRAY:
1914                                         switch (iptr->op1) {
1915                                                 case 4:
1916                                                         printf(" boolean");
1917                                                         break;
1918                                                 case 5:
1919                                                         printf(" char");
1920                                                         break;
1921                                                 case 6:
1922                                                         printf(" float");
1923                                                         break;
1924                                                 case 7:
1925                                                         printf(" double");
1926                                                         break;
1927                                                 case 8:
1928                                                         printf(" byte");
1929                                                         break;
1930                                                 case 9:
1931                                                         printf(" short");
1932                                                         break;
1933                                                 case 10:
1934                                                         printf(" int");
1935                                                         break;
1936                                                 case 11:
1937                                                         printf(" long");
1938                                                         break;
1939                                                 }
1940                                         break;
1941                                 case ICMD_ANEWARRAY:
1942                                         if (iptr->op1) {
1943                                                 printf(" ");
1944                                                 unicode_fprint(stdout,
1945                                                                ((classinfo *) iptr->val.a)->name);
1946                                                 }
1947                                         break;
1948                                 case ICMD_CHECKCAST:
1949                                 case ICMD_INSTANCEOF:
1950                                         if (iptr->op1) {
1951                                                 classinfo *c = iptr->val.a;
1952                                                 if (c->flags & ACC_INTERFACE)
1953                                                         printf(" (INTERFACE) ");
1954                                                 else
1955                                                         printf(" (CLASS,%3d) ", c->vftbl->diffval);
1956                                                 unicode_fprint(stdout, c->name);
1957                                                 }
1958                                         break;
1959                                 case ICMD_BUILTIN3:
1960                                 case ICMD_BUILTIN2:
1961                                 case ICMD_BUILTIN1:
1962                                         printf(" %s", builtin_name((functionptr) iptr->val.a));
1963                                         break;
1964                                 case ICMD_INVOKEVIRTUAL:
1965                                 case ICMD_INVOKESPECIAL:
1966                                 case ICMD_INVOKESTATIC:
1967                                 case ICMD_INVOKEINTERFACE:
1968                                         printf(" ");
1969                                         unicode_fprint(stdout,
1970                                                        ((methodinfo *) iptr->val.a)->class->name);
1971                                         printf(".");
1972                                         unicode_fprint(stdout,
1973                                                        ((methodinfo *) iptr->val.a)->name);
1974                                         break;
1975                                 case ICMD_IFEQ:
1976                                 case ICMD_IFNE:
1977                                 case ICMD_IFLT:
1978                                 case ICMD_IFGE:
1979                                 case ICMD_IFGT:
1980                                 case ICMD_IFLE:
1981                                 case ICMD_IF_LEQ:
1982                                 case ICMD_IF_LNE:
1983                                 case ICMD_IF_LLT:
1984                                 case ICMD_IF_LGE:
1985                                 case ICMD_IF_LGT:
1986                                 case ICMD_IF_LLE:
1987                                         printf("(%d) L%03d", iptr->val.i, ((basicblock *) iptr->target)->debug_nr);
1988                                         break;
1989                                 case ICMD_JSR:
1990                                 case ICMD_GOTO:
1991                                 case ICMD_IFNULL:
1992                                 case ICMD_IFNONNULL:
1993                                 case ICMD_IF_ICMPEQ:
1994                                 case ICMD_IF_ICMPNE:
1995                                 case ICMD_IF_ICMPLT:
1996                                 case ICMD_IF_ICMPGE:
1997                                 case ICMD_IF_ICMPGT:
1998                                 case ICMD_IF_ICMPLE:
1999                                 case ICMD_IF_LCMPEQ:
2000                                 case ICMD_IF_LCMPNE:
2001                                 case ICMD_IF_LCMPLT:
2002                                 case ICMD_IF_LCMPGE:
2003                                 case ICMD_IF_LCMPGT:
2004                                 case ICMD_IF_LCMPLE:
2005                                 case ICMD_IF_ACMPEQ:
2006                                 case ICMD_IF_ACMPNE:
2007                                         printf(" L%03d", ((basicblock *) iptr->target)->debug_nr);
2008                                         break;
2009                                 case ICMD_TABLESWITCH:
2010
2011                                         s4ptr = iptr->val.a;
2012                                         tptr = (void **) iptr->target;
2013
2014                                         printf(" L%03d;", ((basicblock *) *tptr)->debug_nr);
2015                                                                                     /* default */
2016
2017                                         s4ptr++;
2018                                         tptr++;
2019
2020                                         j = *s4ptr++;                               /* low     */
2021                                         j = *s4ptr++ - j;                           /* high    */
2022                                         while (j >= 0) {
2023                                                 printf(" L%03d", ((basicblock *) *tptr)->debug_nr);
2024                                                 tptr++;
2025                                                 j--;
2026                                                 }
2027                                         break;
2028                                 case ICMD_LOOKUPSWITCH:
2029                                         s4ptr = iptr->val.a;
2030                                         tptr = (void **) iptr->target;
2031
2032                                         printf(" L%03d", ((basicblock *) *tptr)->debug_nr);
2033                                         s4ptr++;                                         /* default */
2034                                         j = *s4ptr;                                      /* count   */
2035                                         tptr++;
2036
2037                                         while (--j >= 0) {
2038                                                 printf(" L%03d", ((basicblock *) *tptr)->debug_nr);
2039                                                 tptr++;
2040                                                 }
2041                                         break;
2042                                 }
2043                         printf("\n");
2044                         }
2045
2046                 if (showdisassemble && (!deadcode)) {
2047                         printf("\n");
2048                         i = bptr->mpc;
2049                         s4ptr = (s4 *) (method->mcode + dseglen + i);
2050
2051                         if (bptr->next != NULL) {
2052                                 for (; i < bptr->next->mpc; i += 4, s4ptr++) {
2053                                         disassinstr(*s4ptr, i);
2054                                     }
2055                                 printf("\n");
2056                             }
2057                         else {
2058                                 for (; s4ptr < (s4 *) (method->mcode + method->mcodelength); i += 4, s4ptr++) {
2059                                         disassinstr(*s4ptr, i);
2060                                     }
2061                                 printf("\n");
2062                             }
2063                     }
2064         }
2065
2066         /*
2067         i = bptr->mpc;
2068         s4ptr = (s4 *) (method->mcode + dseglen + i);
2069         if (showdisassemble && (s4ptr < (s4 *) (method->mcode + method->mcodelength))) {
2070                 printf("\n");
2071                 for (; s4ptr < (s4 *) (method->mcode + method->mcodelength); i += 4, s4ptr++) {
2072                         disassinstr(*s4ptr, i);
2073                         }
2074                 printf("\n");
2075                 }
2076         */
2077 }
2078
2079
2080 /*
2081  * These are local overrides for various environment variables in Emacs.
2082  * Please do not remove this and leave it at the end of the file, where
2083  * Emacs will automagically detect them.
2084  * ---------------------------------------------------------------------
2085  * Local variables:
2086  * mode: c
2087  * indent-tabs-mode: t
2088  * c-basic-offset: 4
2089  * tab-width: 4
2090  * End:
2091  */