mono/mini/inssel-x86.brg

   1 #define MONO_EMIT_NEW_X86_COMPARE_MEMBASE_REG(cfg,basereg,offset,operand) do { \
   2                 MonoInst *inst; \
   3                 inst = mono_mempool_alloc0 ((cfg)->mempool, sizeof (MonoInst)); \
   4                 inst->opcode = OP_X86_COMPARE_MEMBASE_REG; \
   5                 inst->inst_basereg = basereg; \
   6                 inst->inst_offset = offset; \
   7                 inst->sreg2 = operand; \
   8                 mono_bblock_add_inst (cfg->cbb, inst); \
   9         } while (0)
  10
  11 #define MONO_EMIT_NEW_X86_COMPARE_MEMBASE_IMM(cfg,basereg,offset,operand) do { \
  12                 MonoInst *inst; \
  13                 inst = mono_mempool_alloc0 ((cfg)->mempool, sizeof (MonoInst)); \
  14                 inst->opcode = OP_X86_COMPARE_MEMBASE_IMM; \
  15                 inst->inst_basereg = basereg; \
  16                 inst->inst_offset = offset; \
  17                 inst->inst_imm = operand; \
  18                 mono_bblock_add_inst (cfg->cbb, inst); \
  19         } while (0)
  20
  21 /* override the arch independant versions with fast x86 versions */
  22
  23 #undef MONO_EMIT_BOUNDS_CHECK
  24 #undef MONO_EMIT_BOUNDS_CHECK_IMM
  25
  26 #define MONO_EMIT_BOUNDS_CHECK(cfg, array_reg, array_type, array_length_field, index_reg) do { \
  27                 if (! (state->tree->flags & MONO_INST_NORANGECHECK)) { \
  28                         MONO_EMIT_NEW_X86_COMPARE_MEMBASE_REG (cfg, array_reg, G_STRUCT_OFFSET (array_type, array_length_field), index_reg); \
  29                         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException"); \
  30                 } \
  31         } while (0)
  32
  33 #define MONO_EMIT_BOUNDS_CHECK_IMM(cfg, array_reg, array_type, array_length_field, index_imm) do { \
  34                 if (! (state->tree->flags & MONO_INST_NORANGECHECK)) { \
  35                         MONO_EMIT_NEW_X86_COMPARE_MEMBASE_IMM (cfg, array_reg, G_STRUCT_OFFSET (array_type, array_length_field), index_imm); \
  36                         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException"); \
  37                 } \
  38         } while (0)
  39
  40
  41 %%
  42
  43 #
  44 # inssel-x86.brg: burg file for special x86 instructions
  45 #
  46 # Author:
  47 #   Dietmar Maurer (dietmar@ximian.com)
  48 #   Paolo Molaro (lupus@ximian.com)
  49 #
  50 # (C) 2002 Ximian, Inc.
  51 #
  52
  53 stmt: OP_START_HANDLER {
  54         MonoInst *spvar = mono_find_spvar_for_region (s, s->cbb->region);
  55         MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STORE_MEMBASE_REG, spvar->inst_basereg, spvar->inst_offset, X86_ESP);
  56 }
  57
  58 stmt: CEE_ENDFINALLY {
  59         MonoInst *spvar = mono_find_spvar_for_region (s, s->cbb->region);
  60         MONO_EMIT_NEW_LOAD_MEMBASE (s, X86_ESP, spvar->inst_basereg, spvar->inst_offset);
  61         tree->opcode = CEE_RET;
  62         mono_bblock_add_inst (s->cbb, tree);
  63 }
  64
  65 stmt: OP_ENDFILTER (reg) {
  66         MonoInst *spvar = mono_find_spvar_for_region (s, s->cbb->region);
  67         MONO_EMIT_NEW_UNALU (s, OP_MOVE, X86_EAX, state->left->reg1);
  68         MONO_EMIT_NEW_LOAD_MEMBASE (s, X86_ESP, spvar->inst_basereg, spvar->inst_offset);
  69         tree->opcode = CEE_RET;
  70         mono_bblock_add_inst (s->cbb, tree);
  71 }
  72
  73 stmt: CEE_STIND_I8 (OP_REGVAR, lreg) {
  74         /* this should only happen for methods returning a long */
  75         MONO_EMIT_NEW_UNALU (s, OP_MOVE, X86_EAX, state->right->reg1);
  76         MONO_EMIT_NEW_UNALU (s, OP_MOVE, X86_EDX, state->right->reg2);
  77 }
  78
  79 lreg: OP_LNEG (lreg) "3" {
  80         int tmpr = mono_regstate_next_int (s->rs);
  81         MONO_EMIT_NEW_UNALU (s, CEE_NEG, state->reg1, state->left->reg1);
  82         MONO_EMIT_BIALU_IMM (s, tree, OP_ADC_IMM, tmpr, state->left->reg2, 0);
  83         MONO_EMIT_NEW_UNALU (s, CEE_NEG, state->reg2, tmpr);
  84 }
  85
  86 freg: OP_LCONV_TO_R8 (lreg) {
  87         MONO_EMIT_NEW_UNALU (s, OP_X86_PUSH, -1, state->left->reg2);
  88         MONO_EMIT_NEW_UNALU (s, OP_X86_PUSH, -1, state->left->reg1);
  89         tree->opcode = OP_X86_FP_LOAD_I8;
  90         tree->inst_basereg = X86_ESP;
  91         tree->inst_offset = 0;
  92         mono_bblock_add_inst (s->cbb, tree);
  93         MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, X86_ESP, X86_ESP, 8);
  94 }
  95
  96 freg: OP_LCONV_TO_R4 (lreg) {
  97         MONO_EMIT_NEW_UNALU (s, OP_X86_PUSH, -1, state->left->reg2);
  98         MONO_EMIT_NEW_UNALU (s, OP_X86_PUSH, -1, state->left->reg1);
  99         tree->opcode = OP_X86_FP_LOAD_I8;
 100         tree->inst_basereg = X86_ESP;
 101         tree->inst_offset = 0;
 102         mono_bblock_add_inst (s->cbb, tree);
 103         /* change precision */
 104         MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STORER4_MEMBASE_REG, X86_ESP, 0, state->reg1);
 105         MONO_EMIT_NEW_LOAD_MEMBASE_OP (s, OP_LOADR4_MEMBASE, state->reg1, X86_ESP, 0);
 106         MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, X86_ESP, X86_ESP, 8);
 107 }
 108
 109 freg: CEE_CONV_R_UN (reg) {
 110         MONO_EMIT_NEW_BIALU_IMM (s, OP_X86_PUSH_IMM, -1, -1, 0);
 111         MONO_EMIT_NEW_UNALU (s, OP_X86_PUSH, -1, state->left->reg1);
 112         tree->opcode = OP_X86_FP_LOAD_I8;
 113         tree->inst_basereg = X86_ESP;
 114         tree->inst_offset = 0;
 115         mono_bblock_add_inst (s->cbb, tree);
 116         MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, X86_ESP, X86_ESP, 8);
 117 }
 118
 119 cflags: OP_COMPARE (CEE_LDIND_REF (base), reg),
 120 cflags: OP_COMPARE (CEE_LDIND_I (base), reg),
 121 cflags: OP_COMPARE (CEE_LDIND_I4 (base), reg),
 122 cflags: OP_COMPARE (CEE_LDIND_U4 (base), reg) {
 123         tree->opcode = OP_X86_COMPARE_MEMBASE_REG;
 124         tree->inst_basereg = state->left->left->tree->inst_basereg;
 125         tree->inst_offset = state->left->left->tree->inst_offset;
 126         tree->sreg2 = state->right->reg1;
 127         mono_bblock_add_inst (s->cbb, tree);
 128 }
 129
 130 cflags: OP_COMPARE (CEE_LDIND_REF (base), OP_ICONST),
 131 cflags: OP_COMPARE (CEE_LDIND_I (base), OP_ICONST),
 132 cflags: OP_COMPARE (CEE_LDIND_I4 (base), OP_ICONST),
 133 cflags: OP_COMPARE (CEE_LDIND_U4 (base), OP_ICONST) {
 134         tree->opcode = OP_X86_COMPARE_MEMBASE_IMM;
 135         tree->inst_basereg = state->left->left->tree->inst_basereg;
 136         tree->inst_offset = state->left->left->tree->inst_offset;
 137         tree->inst_imm = state->right->tree->inst_c0;
 138         mono_bblock_add_inst (s->cbb, tree);
 139 }
 140
 141 cflags: OP_COMPARE (reg, CEE_LDIND_REF (base)),
 142 cflags: OP_COMPARE (reg, CEE_LDIND_I (base)),
 143 cflags: OP_COMPARE (reg, CEE_LDIND_I4 (base)),
 144 cflags: OP_COMPARE (reg, CEE_LDIND_U4 (base)) {
 145         tree->opcode = OP_X86_COMPARE_REG_MEMBASE;
 146         tree->sreg2 = state->right->left->tree->inst_basereg;
 147         tree->inst_offset = state->right->left->tree->inst_offset;
 148         tree->sreg1 = state->left->reg1;
 149         mono_bblock_add_inst (s->cbb, tree);
 150 }
 151
 152 cflags : OP_CEQ (OP_COMPARE (OP_CEQ (cflags), OP_ICONST)) {
 153         tree->opcode = OP_CNE;
 154         tree->dreg = state->reg1;
 155         mono_bblock_add_inst (s->cbb, tree);
 156 } cost {
 157         MBCOND (!state->left->right->tree->inst_c0);
 158         return 1;
 159 }
 160
 161 stmt: CEE_STIND_I1 (base, OP_CEQ (OP_COMPARE (OP_CEQ (cflags), OP_ICONST))) {
 162         tree->opcode = OP_X86_SETNE_MEMBASE;
 163         tree->inst_offset = state->left->tree->inst_offset;
 164         tree->inst_basereg = state->left->tree->inst_basereg;
 165         mono_bblock_add_inst (s->cbb, tree);
 166 } cost {
 167         MBCOND (!state->right->left->right->tree->inst_c0);
 168         return 1;
 169 }
 170
 171 stmt: CEE_STIND_I1 (base, OP_CEQ (cflags)) {
 172         tree->opcode = OP_X86_SETEQ_MEMBASE;
 173         tree->inst_offset = state->left->tree->inst_offset;
 174         tree->inst_basereg = state->left->tree->inst_basereg;
 175         mono_bblock_add_inst (s->cbb, tree);
 176 }
 177
 178 reg: OP_LOCALLOC (OP_ICONST) {
 179         if (tree->flags & MONO_INST_INIT) {
 180                 /* microcoded in mini-x86.c */
 181                 tree->sreg1 = mono_regstate_next_int (s->rs);
 182                 tree->dreg = state->reg1;
 183                 MONO_EMIT_NEW_ICONST (s, tree->sreg1, state->left->tree->inst_c0);
 184                 mono_bblock_add_inst (s->cbb, tree);
 185         } else {
 186                 MONO_EMIT_NEW_BIALU_IMM (s, OP_SUB_IMM, X86_ESP, X86_ESP, state->left->tree->inst_c0);
 187                 MONO_EMIT_UNALU (s, tree, OP_MOVE, state->reg1, X86_ESP);
 188         }
 189 }
 190
 191 reg: OP_LOCALLOC (reg) {
 192         tree->sreg1 = state->left->tree->dreg;
 193         mono_bblock_add_inst (s->cbb, tree);
 194 }
 195
 196 stmt: OP_SETRET (reg) {
 197         tree->opcode = OP_MOVE;
 198         tree->sreg1 = state->left->reg1;
 199         tree->dreg = X86_EAX;
 200         mono_bblock_add_inst (s->cbb, tree);
 201 }
 202
 203 stmt: OP_SETRET (lreg) {
 204         MONO_EMIT_NEW_UNALU (s, OP_MOVE, X86_EDX, state->left->reg2);
 205         tree->opcode = OP_MOVE;
 206         tree->sreg1 = state->left->reg1;
 207         tree->dreg = X86_EAX;
 208         mono_bblock_add_inst (s->cbb, tree);
 209 }
 210
 211 stmt: OP_SETRET (CEE_LDIND_REF (OP_REGVAR)),
 212 stmt: OP_SETRET (CEE_LDIND_I (OP_REGVAR)),
 213 stmt: OP_SETRET (CEE_LDIND_I4 (OP_REGVAR)),
 214 stmt: OP_SETRET (CEE_LDIND_U4 (OP_REGVAR)) {
 215         tree->opcode = OP_MOVE;
 216         tree->sreg1 = state->left->left->tree->dreg;
 217         tree->dreg = X86_EAX;
 218         mono_bblock_add_inst (s->cbb, tree);
 219 }
 220
 221 stmt: OP_SETRET (freg) {
 222         /* nothing to do */
 223 }
 224
 225 stmt: OP_SETRET (OP_ICONST) {
 226         tree->opcode = OP_ICONST;
 227         tree->inst_c0 = state->left->tree->inst_c0;
 228         tree->dreg = X86_EAX;
 229         mono_bblock_add_inst (s->cbb, tree);
 230 }
 231
 232 stmt: OP_OUTARG (reg) {
 233         tree->opcode = OP_X86_PUSH;
 234         tree->sreg1 = state->left->reg1;
 235         mono_bblock_add_inst (s->cbb, tree);
 236 }
 237
 238 # we need to reduce this code duplication with some burg syntax extension
 239 stmt: OP_OUTARG (CEE_LDIND_REF (OP_REGVAR)) {
 240         tree->opcode = OP_X86_PUSH;
 241         tree->sreg1 = state->left->left->tree->dreg;
 242         mono_bblock_add_inst (s->cbb, tree);
 243 }
 244
 245 stmt: OP_OUTARG (CEE_LDIND_I4 (OP_REGVAR)) {
 246         tree->opcode = OP_X86_PUSH;
 247         tree->sreg1 = state->left->left->tree->dreg;
 248         mono_bblock_add_inst (s->cbb, tree);
 249 }
 250
 251 stmt: OP_OUTARG (CEE_LDIND_U4 (OP_REGVAR)) {
 252         tree->opcode = OP_X86_PUSH;
 253         tree->sreg1 = state->left->left->tree->dreg;
 254         mono_bblock_add_inst (s->cbb, tree);
 255 }
 256
 257 stmt: OP_OUTARG (CEE_LDIND_I (OP_REGVAR)) {
 258         tree->opcode = OP_X86_PUSH;
 259         tree->sreg1 = state->left->left->tree->dreg;
 260         mono_bblock_add_inst (s->cbb, tree);
 261 }
 262
 263 stmt: OP_OUTARG (lreg) {
 264         MONO_EMIT_NEW_UNALU (s, OP_X86_PUSH, -1, state->left->reg2);
 265         tree->opcode = OP_X86_PUSH;
 266         tree->sreg1 = state->left->reg1;
 267         mono_bblock_add_inst (s->cbb, tree);
 268 }
 269
 270 stmt: OP_OUTARG (CEE_LDIND_I8 (base)) {
 271         MonoInst *ins;
 272         ins = mono_mempool_alloc0 (s->mempool, sizeof (MonoInst));
 273         ins->opcode = OP_X86_PUSH_MEMBASE;
 274         ins->inst_basereg = state->left->left->tree->inst_basereg;
 275         ins->inst_offset = state->left->left->tree->inst_offset + 4;
 276         mono_bblock_add_inst (s->cbb, ins);
 277
 278         tree->opcode = OP_X86_PUSH_MEMBASE;
 279         tree->inst_basereg = state->left->left->tree->inst_basereg;
 280         tree->inst_offset = state->left->left->tree->inst_offset;
 281         mono_bblock_add_inst (s->cbb, tree);
 282 }
 283
 284 stmt: OP_OUTARG (OP_ICONST) {
 285         tree->opcode = OP_X86_PUSH_IMM;
 286         tree->inst_imm = state->left->tree->inst_c0;
 287         mono_bblock_add_inst (s->cbb, tree);
 288 }
 289
 290 stmt: OP_OUTARG (CEE_LDIND_I4 (base)) {
 291         tree->opcode = OP_X86_PUSH_MEMBASE;
 292         tree->inst_basereg = state->left->left->tree->inst_basereg;
 293         tree->inst_offset = state->left->left->tree->inst_offset;
 294         mono_bblock_add_inst (s->cbb, tree);
 295 }
 296
 297 stmt: OP_OUTARG (CEE_LDIND_U4 (base)) {
 298         tree->opcode = OP_X86_PUSH_MEMBASE;
 299         tree->inst_basereg = state->left->left->tree->inst_basereg;
 300         tree->inst_offset = state->left->left->tree->inst_offset;
 301         mono_bblock_add_inst (s->cbb, tree);
 302 }
 303
 304 stmt: OP_OUTARG (CEE_LDIND_I (base)) {
 305         tree->opcode = OP_X86_PUSH_MEMBASE;
 306         tree->inst_basereg = state->left->left->tree->inst_basereg;
 307         tree->inst_offset = state->left->left->tree->inst_offset;
 308         mono_bblock_add_inst (s->cbb, tree);
 309 }
 310
 311 stmt: OP_OUTARG (CEE_LDIND_REF (base)) {
 312         tree->opcode = OP_X86_PUSH_MEMBASE;
 313         tree->inst_basereg = state->left->left->tree->inst_basereg;
 314         tree->inst_offset = state->left->left->tree->inst_offset;
 315         mono_bblock_add_inst (s->cbb, tree);
 316 }
 317
 318 stmt: OP_OUTARG (CEE_LDIND_REF (OP_REGVAR)) {
 319         tree->opcode = OP_X86_PUSH;
 320         tree->sreg1 = state->left->left->tree->dreg;
 321         mono_bblock_add_inst (s->cbb, tree);
 322 }
 323
 324 stmt: OP_OUTARG (CEE_LDOBJ (reg)) {
 325         tree->opcode = OP_X86_PUSH;
 326         tree->sreg1 = state->left->reg1;
 327         mono_bblock_add_inst (s->cbb, tree);
 328 }
 329
 330 stmt: OP_OUTARG (freg) {
 331         MONO_EMIT_NEW_BIALU_IMM (s, OP_SUB_IMM, X86_ESP, X86_ESP, 8);
 332         tree->opcode = OP_STORER8_MEMBASE_REG;
 333         tree->sreg1 = state->left->reg1;
 334         tree->inst_destbasereg = X86_ESP;
 335         tree->inst_offset = 0;
 336         mono_bblock_add_inst (s->cbb, tree);
 337 }
 338
 339 stmt: OP_OUTARG_R4 (freg) {
 340         MONO_EMIT_NEW_BIALU_IMM (s, OP_SUB_IMM, X86_ESP, X86_ESP, 4);
 341         tree->opcode = OP_STORER4_MEMBASE_REG;
 342         tree->sreg1 = state->left->reg1;
 343         tree->inst_destbasereg = X86_ESP;
 344         tree->inst_offset = 0;
 345         mono_bblock_add_inst (s->cbb, tree);
 346 }
 347
 348 stmt: OP_OUTARG_R8 (freg) {
 349         MONO_EMIT_NEW_BIALU_IMM (s, OP_SUB_IMM, X86_ESP, X86_ESP, 8);
 350         tree->opcode = OP_STORER8_MEMBASE_REG;
 351         tree->sreg1 = state->left->reg1;
 352         tree->inst_destbasereg = X86_ESP;
 353         tree->inst_offset = 0;
 354         mono_bblock_add_inst (s->cbb, tree);
 355 }
 356
 357 stmt: OP_OUTARG_VT (CEE_LDOBJ (base)) {
 358         MonoInst *vt = state->left->left->tree;
 359         //g_print ("vt size: %d at R%d + %d\n", tree->inst_imm, vt->inst_basereg, vt->inst_offset);
 360
 361         if (!tree->inst_imm)
 362                 return;
 363
 364         if (tree->inst_imm <= 4) {
 365                 tree->opcode = OP_X86_PUSH_MEMBASE;
 366                 tree->inst_basereg = vt->inst_basereg;
 367                 tree->inst_offset = vt->inst_offset;
 368                 mono_bblock_add_inst (s->cbb, tree);
 369         } else if (tree->inst_imm <= 20) {
 370                 int sz = tree->inst_imm;
 371                 sz += 3;
 372                 sz &= ~3;
 373                 MONO_EMIT_NEW_BIALU_IMM (s, OP_SUB_IMM, X86_ESP, X86_ESP, sz);
 374                 mini_emit_memcpy (s, X86_ESP, 0, vt->inst_basereg, vt->inst_offset, tree->inst_imm, 0);
 375         } else {
 376                 tree->opcode = OP_X86_PUSH_OBJ;
 377                 tree->inst_basereg = vt->inst_basereg;
 378                 tree->inst_offset = vt->inst_offset;
 379                 mono_bblock_add_inst (s->cbb, tree);
 380         }
 381 }
 382
 383 stmt: OP_OUTARG_VT (OP_ICONST) {
 384         tree->opcode = OP_X86_PUSH_IMM;
 385         tree->inst_imm = state->left->tree->inst_c0;
 386         mono_bblock_add_inst (s->cbb, tree);
 387 }
 388
 389 stmt: OP_OUTARG_VT (reg) {
 390         tree->opcode = OP_X86_PUSH;
 391         tree->sreg1 = state->left->tree->dreg;
 392         mono_bblock_add_inst (s->cbb, tree);
 393 }
 394
 395 reg: OP_LDADDR (OP_REGOFFSET) "1" {
 396         if (state->left->tree->inst_offset) {
 397                 tree->opcode = OP_X86_LEA_MEMBASE;
 398                 tree->sreg1 = state->left->tree->inst_basereg;
 399                 tree->inst_imm = state->left->tree->inst_offset;
 400                 tree->dreg = state->reg1;
 401         } else {
 402                 tree->opcode = OP_MOVE;
 403                 tree->sreg1 = state->left->tree->inst_basereg;
 404                 tree->dreg = state->reg1;
 405         }
 406         mono_bblock_add_inst (s->cbb, tree);
 407 }
 408
 409 reg: CEE_LDOBJ (OP_REGOFFSET) "1" {
 410         if (state->left->tree->inst_offset) {
 411                 tree->opcode = OP_X86_LEA_MEMBASE;
 412                 tree->sreg1 = state->left->tree->inst_basereg;
 413                 tree->inst_imm = state->left->tree->inst_offset;
 414                 tree->dreg = state->reg1;
 415         } else {
 416                 tree->opcode = OP_MOVE;
 417                 tree->sreg1 = state->left->tree->inst_basereg;
 418                 tree->dreg = state->reg1;
 419         }
 420         mono_bblock_add_inst (s->cbb, tree);
 421 }
 422
 423 reg: CEE_LDELEMA (reg, reg) "15" {
 424         guint32 size = mono_class_array_element_size (tree->klass);
 425
 426         MONO_EMIT_BOUNDS_CHECK (s, state->left->reg1, MonoArray, max_length, state->right->reg1);
 427
 428         if (size == 1 || size == 2 || size == 4 || size == 8) {
 429                 static const int fast_log2 [] = { 1, 0, 1, -1, 2, -1, -1, -1, 3 };
 430                 tree->opcode = OP_X86_LEA;
 431                 tree->dreg = state->reg1;
 432                 tree->sreg1 = state->left->reg1;
 433                 tree->sreg2 = state->right->reg1;
 434                 tree->inst_imm = G_STRUCT_OFFSET (MonoArray, vector);
 435                 tree->unused = fast_log2 [size];
 436                 mono_bblock_add_inst (s->cbb, tree);
 437         } else {
 438                 int mult_reg = mono_regstate_next_int (s->rs);
 439                 int add_reg = mono_regstate_next_int (s->rs);
 440                 MONO_EMIT_NEW_BIALU_IMM (s, OP_MUL_IMM, mult_reg, state->right->reg1, size);
 441                 MONO_EMIT_NEW_BIALU (s, CEE_ADD, add_reg, mult_reg, state->left->reg1);
 442                 MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, state->reg1, add_reg, G_STRUCT_OFFSET (MonoArray, vector));
 443         }
 444 }
 445
 446 stmt: CEE_STIND_R8 (OP_REGVAR, freg) {
 447         /* nothing to do: the value is already on the FP stack */
 448 }
 449
 450 stmt: CEE_STIND_I4 (base, CEE_ADD (CEE_LDIND_I4 (base), OP_ICONST)) {
 451         int con = state->right->right->tree->inst_c0;
 452
 453         if (con == 1) {
 454                 tree->opcode = OP_X86_INC_MEMBASE;
 455         } else {
 456                 tree->opcode = OP_X86_ADD_MEMBASE_IMM;
 457                 tree->inst_imm = con;
 458         }
 459
 460         tree->inst_basereg = state->left->tree->inst_basereg;
 461         tree->inst_offset = state->left->tree->inst_offset;
 462         mono_bblock_add_inst (s->cbb, tree);
 463 } cost {
 464         MBTREE_TYPE *t1 = state->right->left->left->tree;
 465         MBTREE_TYPE *t2 = state->left->tree;
 466         MBCOND (t1->inst_basereg == t2->inst_basereg &&
 467                 t1->inst_offset == t2->inst_offset);
 468         return 2;
 469 }
 470
 471 stmt: CEE_STIND_I4 (base, CEE_SUB (CEE_LDIND_I4 (base), OP_ICONST)) {
 472         int con = state->right->right->tree->inst_c0;
 473
 474         if (con == 1) {
 475                 tree->opcode = OP_X86_DEC_MEMBASE;
 476         } else {
 477                 tree->opcode = OP_X86_SUB_MEMBASE_IMM;
 478                 tree->inst_imm = con;
 479         }
 480
 481         tree->inst_basereg = state->left->tree->inst_basereg;
 482         tree->inst_offset = state->left->tree->inst_offset;
 483         mono_bblock_add_inst (s->cbb, tree);
 484 } cost {
 485         MBTREE_TYPE *t1 = state->right->left->left->tree;
 486         MBTREE_TYPE *t2 = state->left->tree;
 487         MBCOND (t1->inst_basereg == t2->inst_basereg &&
 488                 t1->inst_offset == t2->inst_offset);
 489         return 2;
 490 }
 491
 492 #
 493 # this rules is incorrect, it needs to do an indirect inc (inc_membase)
 494 #stmt: CEE_STIND_I4 (reg, CEE_ADD (reg, OP_ICONST)) {
 495 #       tree->opcode = OP_X86_INC_REG;
 496 #       tree->dreg = state->left->reg1;
 497 #       mono_bblock_add_inst (s->cbb, tree);
 498 #} cost {
 499 #       MBState *s1 = state->left;
 500 #       MBState *s2 = state->right->left;
 501 #       int con = state->right->right->tree->inst_c0;
 502 #       MBCOND (con == 1 && s1->reg1 == s2->reg1);
 503 #       return 1;
 504 #}
 505
 506 stmt: CEE_STIND_I4 (OP_REGVAR, CEE_SUB (CEE_LDIND_I4 (OP_REGVAR), OP_ICONST)) {
 507         int con = state->right->right->tree->inst_c0;
 508         int dreg = state->left->tree->dreg;
 509         int sreg = state->right->left->left->tree->dreg;
 510
 511         if (con == 1) {
 512                 if (dreg != sreg)
 513                         MONO_EMIT_NEW_UNALU (s, OP_MOVE, dreg, sreg);
 514                 tree->opcode = OP_X86_DEC_REG;
 515                 tree->dreg = tree->sreg1 = dreg;
 516         } else if (con == -1) {
 517                 if (dreg != sreg)
 518                         MONO_EMIT_NEW_UNALU (s, OP_MOVE, dreg, sreg);
 519                 tree->opcode = OP_X86_INC_REG;
 520                 tree->dreg = tree->sreg1 = dreg;
 521         } else {
 522                 tree->opcode = OP_SUB_IMM;
 523                 tree->inst_imm = con;
 524                 tree->sreg1 = sreg;
 525                 tree->dreg = dreg;
 526         }
 527         mono_bblock_add_inst (s->cbb, tree);
 528 }
 529
 530 stmt: CEE_STIND_I (OP_REGVAR, CEE_ADD (CEE_LDIND_I (OP_REGVAR), OP_ICONST)),
 531 stmt: CEE_STIND_I4 (OP_REGVAR, CEE_ADD (CEE_LDIND_I4 (OP_REGVAR), OP_ICONST)) {
 532         int con = state->right->right->tree->inst_c0;
 533         int dreg = state->left->tree->dreg;
 534         int sreg = state->right->left->left->tree->dreg;
 535
 536         if (con == 1) {
 537                 if (dreg != sreg)
 538                         MONO_EMIT_NEW_UNALU (s, OP_MOVE, dreg, sreg);
 539                 tree->opcode = OP_X86_INC_REG;
 540                 tree->dreg = tree->sreg1 = dreg;
 541         } else if (con == -1) {
 542                 if (dreg != sreg)
 543                         MONO_EMIT_NEW_UNALU (s, OP_MOVE, dreg, sreg);
 544                 tree->opcode = OP_X86_DEC_REG;
 545                 tree->dreg = tree->sreg1 = dreg;
 546         } else {
 547                 tree->opcode = OP_ADD_IMM;
 548                 tree->inst_imm = con;
 549                 tree->sreg1 = sreg;
 550                 tree->dreg = dreg;
 551         }
 552         mono_bblock_add_inst (s->cbb, tree);
 553 }
 554
 555 reg: CEE_LDIND_I2 (OP_REGVAR) {
 556         MONO_EMIT_UNALU (s, tree, OP_SEXT_I2, state->reg1, state->left->tree->dreg);
 557 }
 558
 559 # The XOR rule
 560 stmt: CEE_STIND_I4 (OP_REGVAR, OP_ICONST),
 561 stmt: CEE_STIND_I2 (OP_REGVAR, OP_ICONST),
 562 stmt: CEE_STIND_I1 (OP_REGVAR, OP_ICONST),
 563 stmt: CEE_STIND_REF (OP_REGVAR, OP_ICONST),
 564 stmt: CEE_STIND_I (OP_REGVAR, OP_ICONST) {
 565         int r = state->left->tree->dreg;
 566         MONO_EMIT_BIALU (s, tree, CEE_XOR, r, r, r);
 567 } cost {
 568         MBCOND (!state->right->tree->inst_c0);
 569
 570         return 0;
 571 }
 572
 573 # on x86, fp compare overwrites EAX, so we must
 574 # either improve the local register allocator or
 575 # emit coarse opcodes which saves EAX for us.
 576
 577 reg: OP_CEQ (OP_COMPARE (freg, freg)) {
 578         MONO_EMIT_BIALU (s, tree, OP_FCEQ, state->reg1, state->left->left->reg1,
 579                          state->left->right->reg1);
 580 }
 581
 582 reg: OP_CLT (OP_COMPARE (freg, freg)) {
 583         MONO_EMIT_BIALU (s, tree, OP_FCLT, state->reg1, state->left->left->reg1,
 584                          state->left->right->reg1);
 585 }
 586
 587 reg: OP_CLT_UN (OP_COMPARE (freg, freg)) {
 588         MONO_EMIT_BIALU (s, tree, OP_FCLT_UN, state->reg1, state->left->left->reg1,
 589                          state->left->right->reg1);
 590 }
 591
 592 reg: OP_CGT (OP_COMPARE (freg, freg)) {
 593         MONO_EMIT_BIALU (s, tree, OP_FCGT, state->reg1, state->left->left->reg1,
 594                          state->left->right->reg1);
 595 }
 596
 597 reg: OP_CGT_UN (OP_COMPARE (freg, freg)) {
 598         MONO_EMIT_BIALU (s, tree, OP_FCGT_UN, state->reg1, state->left->left->reg1,
 599                          state->left->right->reg1);
 600 }
 601
 602 # fpcflags overwrites EAX, but this does not matter for statements
 603 # because we are the last operation in the tree.
 604
 605 stmt: CEE_BNE_UN (fpcflags) {
 606         tree->opcode = OP_FBNE_UN;
 607         mono_bblock_add_inst (s->cbb, tree);
 608 }
 609
 610 stmt: CEE_BEQ (fpcflags) {
 611         tree->opcode = OP_FBEQ;
 612         mono_bblock_add_inst (s->cbb, tree);
 613 }
 614
 615 stmt: CEE_BLT (fpcflags) {
 616         tree->opcode = OP_FBLT;
 617         mono_bblock_add_inst (s->cbb, tree);
 618 }
 619
 620 stmt: CEE_BLT_UN (fpcflags) {
 621         tree->opcode = OP_FBLT_UN;
 622         mono_bblock_add_inst (s->cbb, tree);
 623 }
 624
 625 stmt: CEE_BGT (fpcflags) {
 626         tree->opcode = OP_FBGT;
 627         mono_bblock_add_inst (s->cbb, tree);
 628 }
 629
 630 stmt: CEE_BGT_UN (fpcflags) {
 631         tree->opcode = OP_FBGT_UN;
 632         mono_bblock_add_inst (s->cbb, tree);
 633 }
 634
 635 stmt: CEE_BGE  (fpcflags) {
 636         tree->opcode = OP_FBGE;
 637         mono_bblock_add_inst (s->cbb, tree);
 638 }
 639
 640 stmt: CEE_BGE_UN (fpcflags) {
 641         tree->opcode = OP_FBGE_UN;
 642         mono_bblock_add_inst (s->cbb, tree);
 643 }
 644
 645 stmt: CEE_BLE  (fpcflags) {
 646         tree->opcode = OP_FBLE;
 647         mono_bblock_add_inst (s->cbb, tree);
 648 }
 649
 650 stmt: CEE_BLE_UN (fpcflags) {
 651         tree->opcode = OP_FBLE_UN;
 652         mono_bblock_add_inst (s->cbb, tree);
 653 }
 654
 655 stmt: CEE_POP (freg) "0" {
 656         /* we need to pop the value from the x86 FP stack */
 657         MONO_EMIT_UNALU (s, tree, OP_X86_FPOP, -1, state->left->reg1);
 658 }
 659
 660 # override the rules in inssel-float.brg that work for machines with FP registers
 661
 662 freg: OP_FCONV_TO_R8 (freg) "0" {
 663         /* nothing to do */
 664 }
 665
 666 freg: OP_FCONV_TO_R4 (freg) "0" {
 667         /* fixme: nothing to do ??*/
 668 }
 669
 670 reg: CEE_ADD(reg, CEE_LDIND_I4 (base)) {
 671         MonoInst *base = state->right->left->tree;
 672
 673         tree->dreg = state->reg1;
 674         tree->sreg1 = state->left->reg1;
 675         tree->sreg2 = base->inst_basereg;
 676         tree->inst_offset = base->inst_offset;
 677         tree->opcode = OP_X86_ADD_MEMBASE;
 678         mono_bblock_add_inst (s->cbb, tree);
 679 }
 680
 681 reg: CEE_SUB(reg, CEE_LDIND_I4 (base)) {
 682         MonoInst *base = state->right->left->tree;
 683
 684         tree->dreg = state->reg1;
 685         tree->sreg1 = state->left->reg1;
 686         tree->sreg2 = base->inst_basereg;
 687         tree->inst_offset = base->inst_offset;
 688         tree->opcode = OP_X86_SUB_MEMBASE;
 689         mono_bblock_add_inst (s->cbb, tree);
 690 }
 691
 692 reg: CEE_MUL(reg, CEE_LDIND_I4 (base)) {
 693         MonoInst *base = state->right->left->tree;
 694
 695         tree->dreg = state->reg1;
 696         tree->sreg1 = state->left->reg1;
 697         tree->sreg2 = base->inst_basereg;
 698         tree->inst_offset = base->inst_offset;
 699         tree->opcode = OP_X86_MUL_MEMBASE;
 700         mono_bblock_add_inst (s->cbb, tree);
 701 }
 702
 703 lreg: OP_LSHL (lreg, reg) "0" {
 704         MONO_EMIT_BIALU (s, tree, tree->opcode, state->reg1, state->left->reg1, state->right->reg1);
 705 }
 706
 707 lreg: OP_LSHL (lreg, OP_ICONST) "0" {
 708         MONO_EMIT_BIALU_IMM (s, tree, OP_LSHL_IMM, state->reg1, state->left->reg1, state->right->tree->inst_c0);
 709 }
 710
 711 lreg: OP_LSHR (lreg, reg) "0" {
 712         MONO_EMIT_BIALU (s, tree, tree->opcode, state->reg1, state->left->reg1, state->right->reg1);
 713 }
 714
 715 lreg: OP_LSHR (lreg, OP_ICONST) "0" {
 716         MONO_EMIT_BIALU_IMM (s, tree, OP_LSHR_IMM, state->reg1, state->left->reg1, state->right->tree->inst_c0);
 717 }
 718
 719 lreg: OP_LSHR_UN (lreg, reg) "0" {
 720         MONO_EMIT_BIALU (s, tree, tree->opcode, state->reg1, state->left->reg1, state->right->reg1);
 721 }
 722
 723 lreg: OP_LSHR_UN (lreg, OP_ICONST) "0" {
 724         MONO_EMIT_BIALU_IMM (s, tree, OP_LSHR_UN_IMM, state->reg1, state->left->reg1, state->right->tree->inst_c0);
 725 }
 726
 727 reg: OP_X86_TLS_GET {
 728         tree->dreg = state->reg1;
 729         mono_bblock_add_inst (s->cbb, tree);
 730 }
 731
 732 %%