mono/mini/inssel-x86.brg

   1 %%
   2
   3 #
   4 # inssel-x86.brg: burg file for special x86 instructions
   5 #
   6 # Author:
   7 #   Dietmar Maurer (dietmar@ximian.com)
   8 #   Paolo Molaro (lupus@ximian.com)
   9 #
  10 # (C) 2002 Ximian, Inc.
  11 #
  12
  13 stmt: OP_START_HANDLER {
  14         MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STORE_MEMBASE_REG, s->spvar->inst_basereg, s->spvar->inst_offset, X86_ESP);
  15 }
  16
  17 stmt: CEE_ENDFINALLY {
  18         MONO_EMIT_NEW_LOAD_MEMBASE (s, X86_ESP, s->spvar->inst_basereg, s->spvar->inst_offset);
  19         tree->opcode = CEE_RET;
  20         mono_bblock_add_inst (s->cbb, tree);
  21 }
  22
  23 stmt: OP_ENDFILTER (reg) {
  24         MONO_EMIT_NEW_UNALU (s, OP_MOVE, X86_EAX, state->left->reg1);
  25         MONO_EMIT_NEW_LOAD_MEMBASE (s, X86_ESP, s->spvar->inst_basereg, s->spvar->inst_offset);
  26         tree->opcode = CEE_RET;
  27         mono_bblock_add_inst (s->cbb, tree);
  28 }
  29
  30 stmt: CEE_STIND_I8 (OP_REGVAR, lreg) {
  31         /* this should only happen for methods returning a long */
  32         MONO_EMIT_NEW_UNALU (s, OP_MOVE, X86_EAX, state->right->reg1);
  33         MONO_EMIT_NEW_UNALU (s, OP_MOVE, X86_EDX, state->right->reg2);
  34 }
  35
  36 lreg: OP_LNEG (lreg) "3" {
  37         int tmpr = mono_regstate_next_int (s->rs);
  38         MONO_EMIT_NEW_UNALU (s, CEE_NEG, state->reg1, state->left->reg1);
  39         MONO_EMIT_BIALU_IMM (s, tree, OP_ADC_IMM, tmpr, state->left->reg2, 0);
  40         MONO_EMIT_NEW_UNALU (s, CEE_NEG, state->reg2, tmpr);
  41 }
  42
  43 freg: OP_LCONV_TO_R8 (lreg) {
  44         MONO_EMIT_NEW_UNALU (s, OP_X86_PUSH, -1, state->left->reg2);
  45         MONO_EMIT_NEW_UNALU (s, OP_X86_PUSH, -1, state->left->reg1);
  46         tree->opcode = OP_X86_FP_LOAD_I8;
  47         tree->inst_basereg = X86_ESP;
  48         tree->inst_offset = 0;
  49         mono_bblock_add_inst (s->cbb, tree);
  50         MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, X86_ESP, X86_ESP, 8);
  51 }
  52
  53 freg: OP_LCONV_TO_R4 (lreg) {
  54         MONO_EMIT_NEW_UNALU (s, OP_X86_PUSH, -1, state->left->reg2);
  55         MONO_EMIT_NEW_UNALU (s, OP_X86_PUSH, -1, state->left->reg1);
  56         tree->opcode = OP_X86_FP_LOAD_I8;
  57         tree->inst_basereg = X86_ESP;
  58         tree->inst_offset = 0;
  59         mono_bblock_add_inst (s->cbb, tree);
  60         /* change precision */
  61         MONO_EMIT_NEW_STORE_MEMBASE (s, OP_STORER4_MEMBASE_REG, X86_ESP, 0, state->reg1);
  62         MONO_EMIT_NEW_LOAD_MEMBASE_OP (s, OP_LOADR4_MEMBASE, state->reg1, X86_ESP, 0);
  63         MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, X86_ESP, X86_ESP, 8);
  64 }
  65
  66 freg: CEE_CONV_R_UN (reg) {
  67         MONO_EMIT_NEW_BIALU_IMM (s, OP_X86_PUSH_IMM, -1, -1, 0);
  68         MONO_EMIT_NEW_UNALU (s, OP_X86_PUSH, -1, state->left->reg1);
  69         tree->opcode = OP_X86_FP_LOAD_I8;
  70         tree->inst_basereg = X86_ESP;
  71         tree->inst_offset = 0;
  72         mono_bblock_add_inst (s->cbb, tree);
  73         MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, X86_ESP, X86_ESP, 8);
  74 }
  75
  76 cflags: OP_COMPARE (CEE_LDIND_I4 (base), reg) {
  77         tree->opcode = OP_X86_COMPARE_MEMBASE_REG;
  78         tree->inst_basereg = state->left->left->tree->inst_basereg;
  79         tree->inst_offset = state->left->left->tree->inst_offset;
  80         tree->sreg2 = state->right->reg1;
  81         mono_bblock_add_inst (s->cbb, tree);
  82 }
  83
  84 cflags: OP_COMPARE (CEE_LDIND_I4 (base), OP_ICONST) {
  85         tree->opcode = OP_X86_COMPARE_MEMBASE_IMM;
  86         tree->inst_basereg = state->left->left->tree->inst_basereg;
  87         tree->inst_offset = state->left->left->tree->inst_offset;
  88         tree->inst_imm = state->right->tree->inst_c0;
  89         mono_bblock_add_inst (s->cbb, tree);
  90 }
  91
  92 cflags: OP_COMPARE (reg, CEE_LDIND_I4 (base)) {
  93         tree->opcode = OP_X86_COMPARE_REG_MEMBASE;
  94         tree->sreg2 = state->right->left->tree->inst_basereg;
  95         tree->inst_offset = state->right->left->tree->inst_offset;
  96         tree->sreg1 = state->left->reg1;
  97         mono_bblock_add_inst (s->cbb, tree);
  98 }
  99
 100 stmt: CEE_STIND_I1 (base, OP_CEQ (cflags)) {
 101         tree->opcode = OP_X86_SETEQ_MEMBASE;
 102         tree->inst_offset = state->left->tree->inst_offset;
 103         tree->inst_basereg = state->left->tree->inst_basereg;
 104         mono_bblock_add_inst (s->cbb, tree);
 105 }
 106
 107 reg: OP_LOCALLOC (OP_ICONST) {
 108         if (tree->flags & MONO_INST_INIT) {
 109                 /* microcoded in mini-x86.c */
 110                 tree->sreg1 = mono_regstate_next_int (s->rs);
 111                 MONO_EMIT_NEW_ICONST (s, tree->sreg1, state->left->tree->inst_c0);
 112                 mono_bblock_add_inst (s->cbb, tree);
 113         } else {
 114                 MONO_EMIT_NEW_BIALU_IMM (s, OP_SUB_IMM, X86_ESP, X86_ESP, state->left->tree->inst_c0);
 115                 MONO_EMIT_UNALU (s, tree, OP_MOVE, state->reg1, X86_ESP);
 116         }
 117 }
 118
 119 reg: OP_LOCALLOC (reg) {
 120         mono_bblock_add_inst (s->cbb, tree);
 121 }
 122
 123 stmt: OP_SETRET (reg) {
 124         tree->opcode = OP_MOVE;
 125         tree->sreg1 = state->left->reg1;
 126         tree->dreg = X86_EAX;
 127         mono_bblock_add_inst (s->cbb, tree);
 128 }
 129
 130 stmt: OP_SETRET (lreg) {
 131         MONO_EMIT_NEW_UNALU (s, OP_MOVE, X86_EDX, state->left->reg2);
 132         tree->opcode = OP_MOVE;
 133         tree->sreg1 = state->left->reg1;
 134         tree->dreg = X86_EAX;
 135         mono_bblock_add_inst (s->cbb, tree);
 136 }
 137
 138 stmt: OP_SETRET (CEE_LDIND_REF (OP_REGVAR)) {
 139         tree->opcode = OP_MOVE;
 140         tree->sreg1 = state->left->left->tree->dreg;
 141         tree->dreg = X86_EAX;
 142         mono_bblock_add_inst (s->cbb, tree);
 143 }
 144
 145 stmt: OP_SETRET (freg) {
 146         /* nothing to do */
 147 }
 148
 149 stmt: OP_SETRET (OP_ICONST) {
 150         tree->opcode = OP_ICONST;
 151         tree->inst_c0 = state->left->tree->inst_c0;
 152         tree->dreg = X86_EAX;
 153         mono_bblock_add_inst (s->cbb, tree);
 154 }
 155
 156 stmt: OP_OUTARG (reg) {
 157         tree->opcode = OP_X86_PUSH;
 158         tree->sreg1 = state->left->reg1;
 159         mono_bblock_add_inst (s->cbb, tree);
 160 }
 161
 162 # we need to reduce this code duplication with some burg syntax extension
 163 stmt: OP_OUTARG (CEE_LDIND_REF (OP_REGVAR)) {
 164         tree->opcode = OP_X86_PUSH;
 165         tree->sreg1 = state->left->left->tree->dreg;
 166         mono_bblock_add_inst (s->cbb, tree);
 167 }
 168
 169 stmt: OP_OUTARG (CEE_LDIND_I4 (OP_REGVAR)) {
 170         tree->opcode = OP_X86_PUSH;
 171         tree->sreg1 = state->left->left->tree->dreg;
 172         mono_bblock_add_inst (s->cbb, tree);
 173 }
 174
 175 stmt: OP_OUTARG (CEE_LDIND_U4 (OP_REGVAR)) {
 176         tree->opcode = OP_X86_PUSH;
 177         tree->sreg1 = state->left->left->tree->dreg;
 178         mono_bblock_add_inst (s->cbb, tree);
 179 }
 180
 181 stmt: OP_OUTARG (CEE_LDIND_I (OP_REGVAR)) {
 182         tree->opcode = OP_X86_PUSH;
 183         tree->sreg1 = state->left->left->tree->dreg;
 184         mono_bblock_add_inst (s->cbb, tree);
 185 }
 186
 187 stmt: OP_OUTARG (lreg) {
 188         MONO_EMIT_NEW_UNALU (s, OP_X86_PUSH, -1, state->left->reg2);
 189         tree->opcode = OP_X86_PUSH;
 190         tree->sreg1 = state->left->reg1;
 191         mono_bblock_add_inst (s->cbb, tree);
 192 }
 193
 194 stmt: OP_OUTARG (CEE_LDIND_I8 (base)) {
 195         MonoInst *ins;
 196         ins = mono_mempool_alloc0 (s->mempool, sizeof (MonoInst));
 197         ins->opcode = OP_X86_PUSH_MEMBASE;
 198         ins->inst_basereg = state->left->left->tree->inst_basereg;
 199         ins->inst_offset = state->left->left->tree->inst_offset + 4;
 200         mono_bblock_add_inst (s->cbb, ins);
 201
 202         tree->opcode = OP_X86_PUSH_MEMBASE;
 203         tree->inst_basereg = state->left->left->tree->inst_basereg;
 204         tree->inst_offset = state->left->left->tree->inst_offset;
 205         mono_bblock_add_inst (s->cbb, tree);
 206 }
 207
 208 stmt: OP_OUTARG (OP_ICONST) {
 209         tree->opcode = OP_X86_PUSH_IMM;
 210         tree->inst_imm = state->left->tree->inst_c0;
 211         mono_bblock_add_inst (s->cbb, tree);
 212 }
 213
 214 stmt: OP_OUTARG (CEE_LDIND_I4 (base)) {
 215         tree->opcode = OP_X86_PUSH_MEMBASE;
 216         tree->inst_basereg = state->left->left->tree->inst_basereg;
 217         tree->inst_offset = state->left->left->tree->inst_offset;
 218         mono_bblock_add_inst (s->cbb, tree);
 219 }
 220
 221 stmt: OP_OUTARG (CEE_LDIND_U4 (base)) {
 222         tree->opcode = OP_X86_PUSH_MEMBASE;
 223         tree->inst_basereg = state->left->left->tree->inst_basereg;
 224         tree->inst_offset = state->left->left->tree->inst_offset;
 225         mono_bblock_add_inst (s->cbb, tree);
 226 }
 227
 228 stmt: OP_OUTARG (CEE_LDIND_I (base)) {
 229         tree->opcode = OP_X86_PUSH_MEMBASE;
 230         tree->inst_basereg = state->left->left->tree->inst_basereg;
 231         tree->inst_offset = state->left->left->tree->inst_offset;
 232         mono_bblock_add_inst (s->cbb, tree);
 233 }
 234
 235 stmt: OP_OUTARG (CEE_LDIND_REF (base)) {
 236         tree->opcode = OP_X86_PUSH_MEMBASE;
 237         tree->inst_basereg = state->left->left->tree->inst_basereg;
 238         tree->inst_offset = state->left->left->tree->inst_offset;
 239         mono_bblock_add_inst (s->cbb, tree);
 240 }
 241
 242 stmt: OP_OUTARG (CEE_LDIND_REF (OP_REGVAR)) {
 243         tree->opcode = OP_X86_PUSH;
 244         tree->sreg1 = state->left->left->tree->dreg;
 245         mono_bblock_add_inst (s->cbb, tree);
 246 }
 247
 248 stmt: OP_OUTARG (CEE_LDOBJ (reg)) {
 249         tree->opcode = OP_X86_PUSH;
 250         tree->sreg1 = state->left->reg1;
 251         mono_bblock_add_inst (s->cbb, tree);
 252 }
 253
 254 stmt: OP_OUTARG (freg) {
 255         MONO_EMIT_NEW_BIALU_IMM (s, OP_SUB_IMM, X86_ESP, X86_ESP, 8);
 256         tree->opcode = OP_STORER8_MEMBASE_REG;
 257         tree->sreg1 = state->left->reg1;
 258         tree->inst_destbasereg = X86_ESP;
 259         tree->inst_offset = 0;
 260         mono_bblock_add_inst (s->cbb, tree);
 261 }
 262
 263 stmt: OP_OUTARG_R4 (freg) {
 264         MONO_EMIT_NEW_BIALU_IMM (s, OP_SUB_IMM, X86_ESP, X86_ESP, 4);
 265         tree->opcode = OP_STORER4_MEMBASE_REG;
 266         tree->sreg1 = state->left->reg1;
 267         tree->inst_destbasereg = X86_ESP;
 268         tree->inst_offset = 0;
 269         mono_bblock_add_inst (s->cbb, tree);
 270 }
 271
 272 stmt: OP_OUTARG_R8 (freg) {
 273         MONO_EMIT_NEW_BIALU_IMM (s, OP_SUB_IMM, X86_ESP, X86_ESP, 8);
 274         tree->opcode = OP_STORER8_MEMBASE_REG;
 275         tree->sreg1 = state->left->reg1;
 276         tree->inst_destbasereg = X86_ESP;
 277         tree->inst_offset = 0;
 278         mono_bblock_add_inst (s->cbb, tree);
 279 }
 280
 281 stmt: OP_OUTARG_VT (CEE_LDOBJ (base)) {
 282         MonoInst *vt = state->left->left->tree;
 283         //g_print ("vt size: %d at R%d + %d\n", tree->inst_imm, vt->inst_basereg, vt->inst_offset);
 284
 285         if (!tree->inst_imm)
 286                 return;
 287
 288         if (tree->inst_imm <= 4) {
 289                 tree->opcode = OP_X86_PUSH_MEMBASE;
 290                 tree->inst_basereg = vt->inst_basereg;
 291                 tree->inst_offset = vt->inst_offset;
 292                 mono_bblock_add_inst (s->cbb, tree);
 293         } else if (tree->inst_imm <= 20) {
 294                 int sz = tree->inst_imm;
 295                 sz += 3;
 296                 sz &= ~3;
 297                 MONO_EMIT_NEW_BIALU_IMM (s, OP_SUB_IMM, X86_ESP, X86_ESP, sz);
 298                 mini_emit_memcpy (s, X86_ESP, 0, vt->inst_basereg, vt->inst_offset, tree->inst_imm, 0);
 299         } else {
 300                 tree->opcode = OP_X86_PUSH_OBJ;
 301                 tree->inst_basereg = vt->inst_basereg;
 302                 tree->inst_offset = vt->inst_offset;
 303                 mono_bblock_add_inst (s->cbb, tree);
 304         }
 305 }
 306
 307 stmt: OP_OUTARG_VT (OP_ICONST) {
 308         tree->opcode = OP_X86_PUSH_IMM;
 309         tree->inst_imm = state->left->tree->inst_c0;
 310         mono_bblock_add_inst (s->cbb, tree);
 311 }
 312
 313 reg: OP_LDADDR (OP_REGOFFSET) "1" {
 314         if (state->left->tree->inst_offset) {
 315                 tree->opcode = OP_X86_LEA_MEMBASE;
 316                 tree->sreg1 = state->left->tree->inst_basereg;
 317                 tree->inst_imm = state->left->tree->inst_offset;
 318                 tree->dreg = state->reg1;
 319         } else {
 320                 tree->opcode = OP_MOVE;
 321                 tree->sreg1 = state->left->tree->inst_basereg;
 322                 tree->dreg = state->reg1;
 323         }
 324         mono_bblock_add_inst (s->cbb, tree);
 325 }
 326
 327 reg: CEE_LDOBJ (OP_REGOFFSET) "1" {
 328         if (state->left->tree->inst_offset) {
 329                 tree->opcode = OP_X86_LEA_MEMBASE;
 330                 tree->sreg1 = state->left->tree->inst_basereg;
 331                 tree->inst_imm = state->left->tree->inst_offset;
 332                 tree->dreg = state->reg1;
 333         } else {
 334                 tree->opcode = OP_MOVE;
 335                 tree->sreg1 = state->left->tree->inst_basereg;
 336                 tree->dreg = state->reg1;
 337         }
 338         mono_bblock_add_inst (s->cbb, tree);
 339 }
 340
 341 reg: CEE_LDELEMA (reg, reg) "15" {
 342         int length_reg = mono_regstate_next_int (s->rs);
 343         guint32 size = mono_class_array_element_size (tree->klass);
 344
 345         MONO_EMIT_NEW_LOAD_MEMBASE_OP (s, OP_LOADI4_MEMBASE, length_reg,
 346                                        state->left->reg1, G_STRUCT_OFFSET (MonoArray, max_length));
 347         MONO_EMIT_NEW_BIALU (s, OP_COMPARE, -1, length_reg, state->right->reg1);
 348         MONO_EMIT_NEW_COND_EXC (s, LE_UN, "IndexOutOfRangeException");
 349
 350         if (size == 1 || size == 2 || size == 4 || size == 8) {
 351                 static const int fast_log2 [] = { 1, 0, 1, -1, 2, -1, -1, -1, 3 };
 352                 tree->opcode = OP_X86_LEA;
 353                 tree->dreg = state->reg1;
 354                 tree->sreg1 = state->left->reg1;
 355                 tree->sreg2 = state->right->reg1;
 356                 tree->inst_imm = G_STRUCT_OFFSET (MonoArray, vector);
 357                 tree->unused = fast_log2 [size];
 358                 mono_bblock_add_inst (s->cbb, tree);
 359         } else {
 360                 int mult_reg = mono_regstate_next_int (s->rs);
 361                 int add_reg = mono_regstate_next_int (s->rs);
 362                 MONO_EMIT_NEW_BIALU_IMM (s, OP_MUL_IMM, mult_reg, state->right->reg1, size);
 363                 MONO_EMIT_NEW_BIALU (s, CEE_ADD, add_reg, mult_reg, state->left->reg1);
 364                 MONO_EMIT_NEW_BIALU_IMM (s, OP_ADD_IMM, state->reg1, add_reg, G_STRUCT_OFFSET (MonoArray, vector));
 365         }
 366 }
 367
 368 stmt: CEE_STIND_R8 (OP_REGVAR, freg) {
 369         /* nothing to do: the value is already on the FP stack */
 370 }
 371
 372 stmt: CEE_STIND_I4 (base, CEE_ADD (CEE_LDIND_I4 (base), OP_ICONST)) {
 373         int con = state->right->right->tree->inst_c0;
 374
 375         if (con == 1) {
 376                 tree->opcode = OP_X86_INC_MEMBASE;
 377         } else {
 378                 tree->opcode = OP_X86_ADD_MEMBASE_IMM;
 379                 tree->inst_imm = con;
 380         }
 381
 382         tree->inst_basereg = state->left->tree->inst_basereg;
 383         tree->inst_offset = state->left->tree->inst_offset;
 384         mono_bblock_add_inst (s->cbb, tree);
 385 } cost {
 386         MBTREE_TYPE *t1 = state->right->left->left->tree;
 387         MBTREE_TYPE *t2 = state->left->tree;
 388         MBCOND (t1->inst_basereg == t2->inst_basereg &&
 389                 t1->inst_offset == t2->inst_offset);
 390         return 2;
 391 }
 392
 393 stmt: CEE_STIND_I4 (base, CEE_SUB (CEE_LDIND_I4 (base), OP_ICONST)) {
 394         int con = state->right->right->tree->inst_c0;
 395
 396         if (con == 1) {
 397                 tree->opcode = OP_X86_DEC_MEMBASE;
 398         } else {
 399                 tree->opcode = OP_X86_SUB_MEMBASE_IMM;
 400                 tree->inst_imm = con;
 401         }
 402
 403         tree->inst_basereg = state->left->tree->inst_basereg;
 404         tree->inst_offset = state->left->tree->inst_offset;
 405         mono_bblock_add_inst (s->cbb, tree);
 406 } cost {
 407         MBTREE_TYPE *t1 = state->right->left->left->tree;
 408         MBTREE_TYPE *t2 = state->left->tree;
 409         MBCOND (t1->inst_basereg == t2->inst_basereg &&
 410                 t1->inst_offset == t2->inst_offset);
 411         return 2;
 412 }
 413
 414 #
 415 # this rules is incorrect, it needs to do an indirect inc (inc_membase)
 416 #stmt: CEE_STIND_I4 (reg, CEE_ADD (reg, OP_ICONST)) {
 417 #       tree->opcode = OP_X86_INC_REG;
 418 #       tree->dreg = state->left->reg1;
 419 #       mono_bblock_add_inst (s->cbb, tree);
 420 #} cost {
 421 #       MBState *s1 = state->left;
 422 #       MBState *s2 = state->right->left;
 423 #       int con = state->right->right->tree->inst_c0;
 424 #       MBCOND (con == 1 && s1->reg1 == s2->reg1);
 425 #       return 1;
 426 #}
 427
 428 stmt: CEE_STIND_I4 (OP_REGVAR, CEE_SUB (CEE_LDIND_I4 (OP_REGVAR), OP_ICONST)) {
 429         int con = state->right->right->tree->inst_c0;
 430         int dreg = state->left->tree->dreg;
 431         int sreg = state->right->left->left->tree->dreg;
 432
 433         if (con == 1) {
 434                 if (dreg != sreg)
 435                         MONO_EMIT_NEW_UNALU (s, OP_MOVE, dreg, sreg);
 436                 tree->opcode = OP_X86_DEC_REG;
 437                 tree->dreg = tree->sreg1 = dreg;
 438         } else if (con == -1) {
 439                 if (dreg != sreg)
 440                         MONO_EMIT_NEW_UNALU (s, OP_MOVE, dreg, sreg);
 441                 tree->opcode = OP_X86_INC_REG;
 442                 tree->dreg = tree->sreg1 = dreg;
 443         } else {
 444                 tree->opcode = OP_SUB_IMM;
 445                 tree->inst_imm = con;
 446                 tree->sreg1 = sreg;
 447                 tree->dreg = dreg;
 448         }
 449         mono_bblock_add_inst (s->cbb, tree);
 450 }
 451
 452 stmt: CEE_STIND_I4 (OP_REGVAR, CEE_ADD (CEE_LDIND_I4 (OP_REGVAR), OP_ICONST)) {
 453         int con = state->right->right->tree->inst_c0;
 454         int dreg = state->left->tree->dreg;
 455         int sreg = state->right->left->left->tree->dreg;
 456
 457         if (con == 1) {
 458                 if (dreg != sreg)
 459                         MONO_EMIT_NEW_UNALU (s, OP_MOVE, dreg, sreg);
 460                 tree->opcode = OP_X86_INC_REG;
 461                 tree->dreg = tree->sreg1 = dreg;
 462         } else if (con == -1) {
 463                 if (dreg != sreg)
 464                         MONO_EMIT_NEW_UNALU (s, OP_MOVE, dreg, sreg);
 465                 tree->opcode = OP_X86_DEC_REG;
 466                 tree->dreg = tree->sreg1 = dreg;
 467         } else {
 468                 tree->opcode = OP_ADD_IMM;
 469                 tree->inst_imm = con;
 470                 tree->sreg1 = sreg;
 471                 tree->dreg = dreg;
 472         }
 473         mono_bblock_add_inst (s->cbb, tree);
 474 }
 475
 476 reg: CEE_LDIND_I2 (OP_REGVAR) {
 477         MONO_EMIT_UNALU (s, tree, OP_SEXT_I2, state->reg1, state->left->tree->dreg);
 478 }
 479
 480 # on x86, fp compare overwrites EAX, so we must
 481 # either improve the local register allocator or
 482 # emit coarse opcodes which saves EAX for us.
 483
 484 reg: OP_CEQ (OP_COMPARE (freg, freg)) {
 485         MONO_EMIT_BIALU (s, tree, OP_FCEQ, state->reg1, state->left->left->reg1,
 486                          state->left->right->reg1);
 487 }
 488
 489 reg: OP_CLT (OP_COMPARE (freg, freg)) {
 490         MONO_EMIT_BIALU (s, tree, OP_FCLT, state->reg1, state->left->left->reg1,
 491                          state->left->right->reg1);
 492 }
 493
 494 reg: OP_CLT_UN (OP_COMPARE (freg, freg)) {
 495         MONO_EMIT_BIALU (s, tree, OP_FCLT_UN, state->reg1, state->left->left->reg1,
 496                          state->left->right->reg1);
 497 }
 498
 499 reg: OP_CGT (OP_COMPARE (freg, freg)) {
 500         MONO_EMIT_BIALU (s, tree, OP_FCGT, state->reg1, state->left->left->reg1,
 501                          state->left->right->reg1);
 502 }
 503
 504 reg: OP_CGT_UN (OP_COMPARE (freg, freg)) {
 505         MONO_EMIT_BIALU (s, tree, OP_FCGT_UN, state->reg1, state->left->left->reg1,
 506                          state->left->right->reg1);
 507 }
 508
 509 # fpcflags overwrites EAX, but this does not matter for statements
 510 # because we are the last operation in the tree.
 511
 512 stmt: CEE_BNE_UN (fpcflags) {
 513         tree->opcode = OP_FBNE_UN;
 514         mono_bblock_add_inst (s->cbb, tree);
 515 }
 516
 517 stmt: CEE_BEQ (fpcflags) {
 518         tree->opcode = OP_FBEQ;
 519         mono_bblock_add_inst (s->cbb, tree);
 520 }
 521
 522 stmt: CEE_BLT (fpcflags) {
 523         tree->opcode = OP_FBLT;
 524         mono_bblock_add_inst (s->cbb, tree);
 525 }
 526
 527 stmt: CEE_BLT_UN (fpcflags) {
 528         tree->opcode = OP_FBLT_UN;
 529         mono_bblock_add_inst (s->cbb, tree);
 530 }
 531
 532 stmt: CEE_BGT (fpcflags) {
 533         tree->opcode = OP_FBGT;
 534         mono_bblock_add_inst (s->cbb, tree);
 535 }
 536
 537 stmt: CEE_BGT_UN (fpcflags) {
 538         tree->opcode = OP_FBGT_UN;
 539         mono_bblock_add_inst (s->cbb, tree);
 540 }
 541
 542 stmt: CEE_BGE  (fpcflags) {
 543         tree->opcode = OP_FBGE;
 544         mono_bblock_add_inst (s->cbb, tree);
 545 }
 546
 547 stmt: CEE_BGE_UN (fpcflags) {
 548         tree->opcode = OP_FBGE_UN;
 549         mono_bblock_add_inst (s->cbb, tree);
 550 }
 551
 552 stmt: CEE_BLE  (fpcflags) {
 553         tree->opcode = OP_FBLE;
 554         mono_bblock_add_inst (s->cbb, tree);
 555 }
 556
 557 stmt: CEE_BLE_UN (fpcflags) {
 558         tree->opcode = OP_FBLE_UN;
 559         mono_bblock_add_inst (s->cbb, tree);
 560 }
 561
 562 stmt: CEE_POP (freg) "0" {
 563         /* we need to pop the value from the x86 FP stack */
 564         MONO_EMIT_UNALU (s, tree, OP_X86_FPOP, -1, state->left->reg1);
 565 }
 566
 567 %%