1 /* 2 * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 class BlockBegin; 26 class BlockList; 27 class LIR_Assembler; 28 class CodeEmitInfo; 29 class CodeStub; 30 class CodeStubList; 31 class ArrayCopyStub; 32 class LIR_Op; 33 class ciType; 34 class ValueType; 35 class LIR_OpVisitState; 36 class FpuStackSim; 37 38 //--------------------------------------------------------------------- 39 // LIR Operands 40 // LIR_OprDesc 41 // LIR_OprPtr 42 // LIR_Const 43 // LIR_Address 44 //--------------------------------------------------------------------- 45 class LIR_OprDesc; 46 class LIR_OprPtr; 47 class LIR_Const; 48 class LIR_Address; 49 class LIR_OprVisitor; 50 51 52 typedef LIR_OprDesc* LIR_Opr; 53 typedef int RegNr; 54 55 define_array(LIR_OprArray, LIR_Opr) 56 define_stack(LIR_OprList, LIR_OprArray) 57 58 define_array(LIR_OprRefArray, LIR_Opr*) 59 define_stack(LIR_OprRefList, LIR_OprRefArray) 60 61 define_array(CodeEmitInfoArray, CodeEmitInfo*) 62 define_stack(CodeEmitInfoList, CodeEmitInfoArray) 63 64 define_array(LIR_OpArray, LIR_Op*) 65 define_stack(LIR_OpList, LIR_OpArray) 66 67 // define LIR_OprPtr early so LIR_OprDesc can refer to it 68 class LIR_OprPtr: public CompilationResourceObj { 69 public: 70 bool is_oop_pointer() const { return (type() == T_OBJECT); } 71 bool is_float_kind() const { BasicType t = type(); return (t == T_FLOAT) || (t == T_DOUBLE); } 72 73 virtual LIR_Const* as_constant() { return NULL; } 74 virtual LIR_Address* as_address() { return NULL; } 75 virtual BasicType type() const = 0; 76 virtual void print_value_on(outputStream* out) const = 0; 77 }; 78 79 80 81 // LIR constants 82 class LIR_Const: public LIR_OprPtr { 83 private: 84 JavaValue _value; 85 86 void type_check(BasicType t) const { assert(type() == t, "type check"); } 87 void type_check(BasicType t1, BasicType t2) const { assert(type() == t1 || type() == t2, "type check"); } 88 void type_check(BasicType t1, BasicType t2, BasicType t3) const { assert(type() == t1 || type() == t2 || type() == t3, "type check"); } 89 90 public: 91 LIR_Const(jint i, bool is_address=false) { _value.set_type(is_address?T_ADDRESS:T_INT); _value.set_jint(i); } 92 LIR_Const(jlong l) { _value.set_type(T_LONG); _value.set_jlong(l); } 93 LIR_Const(jfloat f) { _value.set_type(T_FLOAT); _value.set_jfloat(f); } 94 LIR_Const(jdouble d) { _value.set_type(T_DOUBLE); _value.set_jdouble(d); } 95 LIR_Const(jobject o) { _value.set_type(T_OBJECT); _value.set_jobject(o); } 96 LIR_Const(void* p) { 97 #ifdef _LP64 98 assert(sizeof(jlong) >= sizeof(p), "too small");; 99 _value.set_type(T_LONG); _value.set_jlong((jlong)p); 100 #else 101 assert(sizeof(jint) >= sizeof(p), "too small");; 102 _value.set_type(T_INT); _value.set_jint((jint)p); 103 #endif 104 } 105 106 virtual BasicType type() const { return _value.get_type(); } 107 virtual LIR_Const* as_constant() { return this; } 108 109 jint as_jint() const { type_check(T_INT, T_ADDRESS); return _value.get_jint(); } 110 jlong as_jlong() const { type_check(T_LONG ); return _value.get_jlong(); } 111 jfloat as_jfloat() const { type_check(T_FLOAT ); return _value.get_jfloat(); } 112 jdouble as_jdouble() const { type_check(T_DOUBLE); return _value.get_jdouble(); } 113 jobject as_jobject() const { type_check(T_OBJECT); return _value.get_jobject(); } 114 jint as_jint_lo() const { type_check(T_LONG ); return low(_value.get_jlong()); } 115 jint as_jint_hi() const { type_check(T_LONG ); return high(_value.get_jlong()); } 116 117 #ifdef _LP64 118 address as_pointer() const { type_check(T_LONG ); return (address)_value.get_jlong(); } 119 #else 120 address as_pointer() const { type_check(T_INT ); return (address)_value.get_jint(); } 121 #endif 122 123 124 jint as_jint_bits() const { type_check(T_FLOAT, T_INT, T_ADDRESS); return _value.get_jint(); } 125 jint as_jint_lo_bits() const { 126 if (type() == T_DOUBLE) { 127 return low(jlong_cast(_value.get_jdouble())); 128 } else { 129 return as_jint_lo(); 130 } 131 } 132 jint as_jint_hi_bits() const { 133 if (type() == T_DOUBLE) { 134 return high(jlong_cast(_value.get_jdouble())); 135 } else { 136 return as_jint_hi(); 137 } 138 } 139 jlong as_jlong_bits() const { 140 if (type() == T_DOUBLE) { 141 return jlong_cast(_value.get_jdouble()); 142 } else { 143 return as_jlong(); 144 } 145 } 146 147 virtual void print_value_on(outputStream* out) const PRODUCT_RETURN; 148 149 150 bool is_zero_float() { 151 jfloat f = as_jfloat(); 152 jfloat ok = 0.0f; 153 return jint_cast(f) == jint_cast(ok); 154 } 155 156 bool is_one_float() { 157 jfloat f = as_jfloat(); 158 return !g_isnan(f) && g_isfinite(f) && f == 1.0; 159 } 160 161 bool is_zero_double() { 162 jdouble d = as_jdouble(); 163 jdouble ok = 0.0; 164 return jlong_cast(d) == jlong_cast(ok); 165 } 166 167 bool is_one_double() { 168 jdouble d = as_jdouble(); 169 return !g_isnan(d) && g_isfinite(d) && d == 1.0; 170 } 171 }; 172 173 174 //---------------------LIR Operand descriptor------------------------------------ 175 // 176 // The class LIR_OprDesc represents a LIR instruction operand; 177 // it can be a register (ALU/FPU), stack location or a constant; 178 // Constants and addresses are represented as resource area allocated 179 // structures (see above). 180 // Registers and stack locations are inlined into the this pointer 181 // (see value function). 182 183 class LIR_OprDesc: public CompilationResourceObj { 184 public: 185 // value structure: 186 // data opr-type opr-kind 187 // +--------------+-------+-------+ 188 // [max...........|7 6 5 4|3 2 1 0] 189 // ^ 190 // is_pointer bit 191 // 192 // lowest bit cleared, means it is a structure pointer 193 // we need 4 bits to represent types 194 195 private: 196 friend class LIR_OprFact; 197 198 // Conversion 199 intptr_t value() const { return (intptr_t) this; } 200 201 bool check_value_mask(intptr_t mask, intptr_t masked_value) const { 202 return (value() & mask) == masked_value; 203 } 204 205 enum OprKind { 206 pointer_value = 0 207 , stack_value = 1 208 , cpu_register = 3 209 , fpu_register = 5 210 , illegal_value = 7 211 }; 212 213 enum OprBits { 214 pointer_bits = 1 215 , kind_bits = 3 216 , type_bits = 4 217 , size_bits = 2 218 , destroys_bits = 1 219 , virtual_bits = 1 220 , is_xmm_bits = 1 221 , last_use_bits = 1 222 , is_fpu_stack_offset_bits = 1 // used in assertion checking on x86 for FPU stack slot allocation 223 , non_data_bits = kind_bits + type_bits + size_bits + destroys_bits + last_use_bits + 224 is_fpu_stack_offset_bits + virtual_bits + is_xmm_bits 225 , data_bits = BitsPerInt - non_data_bits 226 , reg_bits = data_bits / 2 // for two registers in one value encoding 227 }; 228 229 enum OprShift { 230 kind_shift = 0 231 , type_shift = kind_shift + kind_bits 232 , size_shift = type_shift + type_bits 233 , destroys_shift = size_shift + size_bits 234 , last_use_shift = destroys_shift + destroys_bits 235 , is_fpu_stack_offset_shift = last_use_shift + last_use_bits 236 , virtual_shift = is_fpu_stack_offset_shift + is_fpu_stack_offset_bits 237 , is_xmm_shift = virtual_shift + virtual_bits 238 , data_shift = is_xmm_shift + is_xmm_bits 239 , reg1_shift = data_shift 240 , reg2_shift = data_shift + reg_bits 241 242 }; 243 244 enum OprSize { 245 single_size = 0 << size_shift 246 , double_size = 1 << size_shift 247 }; 248 249 enum OprMask { 250 kind_mask = right_n_bits(kind_bits) 251 , type_mask = right_n_bits(type_bits) << type_shift 252 , size_mask = right_n_bits(size_bits) << size_shift 253 , last_use_mask = right_n_bits(last_use_bits) << last_use_shift 254 , is_fpu_stack_offset_mask = right_n_bits(is_fpu_stack_offset_bits) << is_fpu_stack_offset_shift 255 , virtual_mask = right_n_bits(virtual_bits) << virtual_shift 256 , is_xmm_mask = right_n_bits(is_xmm_bits) << is_xmm_shift 257 , pointer_mask = right_n_bits(pointer_bits) 258 , lower_reg_mask = right_n_bits(reg_bits) 259 , no_type_mask = (int)(~(type_mask | last_use_mask | is_fpu_stack_offset_mask)) 260 }; 261 262 uintptr_t data() const { return value() >> data_shift; } 263 int lo_reg_half() const { return data() & lower_reg_mask; } 264 int hi_reg_half() const { return (data() >> reg_bits) & lower_reg_mask; } 265 OprKind kind_field() const { return (OprKind)(value() & kind_mask); } 266 OprSize size_field() const { return (OprSize)(value() & size_mask); } 267 268 static char type_char(BasicType t); 269 270 public: 271 enum { 272 vreg_base = ConcreteRegisterImpl::number_of_registers, 273 vreg_max = (1 << data_bits) - 1 274 }; 275 276 static inline LIR_Opr illegalOpr(); 277 278 enum OprType { 279 unknown_type = 0 << type_shift // means: not set (catch uninitialized types) 280 , int_type = 1 << type_shift 281 , long_type = 2 << type_shift 282 , object_type = 3 << type_shift 283 , address_type = 4 << type_shift 284 , float_type = 5 << type_shift 285 , double_type = 6 << type_shift 286 }; 287 friend OprType as_OprType(BasicType t); 288 friend BasicType as_BasicType(OprType t); 289 290 OprType type_field_valid() const { assert(is_register() || is_stack(), "should not be called otherwise"); return (OprType)(value() & type_mask); } 291 OprType type_field() const { return is_illegal() ? unknown_type : (OprType)(value() & type_mask); } 292 293 static OprSize size_for(BasicType t) { 294 switch (t) { 295 case T_LONG: 296 case T_DOUBLE: 297 return double_size; 298 break; 299 300 case T_FLOAT: 301 case T_BOOLEAN: 302 case T_CHAR: 303 case T_BYTE: 304 case T_SHORT: 305 case T_INT: 306 case T_ADDRESS: 307 case T_OBJECT: 308 case T_ARRAY: 309 return single_size; 310 break; 311 312 default: 313 ShouldNotReachHere(); 314 return single_size; 315 } 316 } 317 318 319 void validate_type() const PRODUCT_RETURN; 320 321 BasicType type() const { 322 if (is_pointer()) { 323 return pointer()->type(); 324 } 325 return as_BasicType(type_field()); 326 } 327 328 329 ValueType* value_type() const { return as_ValueType(type()); } 330 331 char type_char() const { return type_char((is_pointer()) ? pointer()->type() : type()); } 332 333 bool is_equal(LIR_Opr opr) const { return this == opr; } 334 // checks whether types are same 335 bool is_same_type(LIR_Opr opr) const { 336 assert(type_field() != unknown_type && 337 opr->type_field() != unknown_type, "shouldn't see unknown_type"); 338 return type_field() == opr->type_field(); 339 } 340 bool is_same_register(LIR_Opr opr) { 341 return (is_register() && opr->is_register() && 342 kind_field() == opr->kind_field() && 343 (value() & no_type_mask) == (opr->value() & no_type_mask)); 344 } 345 346 bool is_pointer() const { return check_value_mask(pointer_mask, pointer_value); } 347 bool is_illegal() const { return kind_field() == illegal_value; } 348 bool is_valid() const { return kind_field() != illegal_value; } 349 350 bool is_register() const { return is_cpu_register() || is_fpu_register(); } 351 bool is_virtual() const { return is_virtual_cpu() || is_virtual_fpu(); } 352 353 bool is_constant() const { return is_pointer() && pointer()->as_constant() != NULL; } 354 bool is_address() const { return is_pointer() && pointer()->as_address() != NULL; } 355 356 bool is_float_kind() const { return is_pointer() ? pointer()->is_float_kind() : (kind_field() == fpu_register); } 357 bool is_oop() const; 358 359 // semantic for fpu- and xmm-registers: 360 // * is_float and is_double return true for xmm_registers 361 // (so is_single_fpu and is_single_xmm are true) 362 // * So you must always check for is_???_xmm prior to is_???_fpu to 363 // distinguish between fpu- and xmm-registers 364 365 bool is_stack() const { validate_type(); return check_value_mask(kind_mask, stack_value); } 366 bool is_single_stack() const { validate_type(); return check_value_mask(kind_mask | size_mask, stack_value | single_size); } 367 bool is_double_stack() const { validate_type(); return check_value_mask(kind_mask | size_mask, stack_value | double_size); } 368 369 bool is_cpu_register() const { validate_type(); return check_value_mask(kind_mask, cpu_register); } 370 bool is_virtual_cpu() const { validate_type(); return check_value_mask(kind_mask | virtual_mask, cpu_register | virtual_mask); } 371 bool is_fixed_cpu() const { validate_type(); return check_value_mask(kind_mask | virtual_mask, cpu_register); } 372 bool is_single_cpu() const { validate_type(); return check_value_mask(kind_mask | size_mask, cpu_register | single_size); } 373 bool is_double_cpu() const { validate_type(); return check_value_mask(kind_mask | size_mask, cpu_register | double_size); } 374 375 bool is_fpu_register() const { validate_type(); return check_value_mask(kind_mask, fpu_register); } 376 bool is_virtual_fpu() const { validate_type(); return check_value_mask(kind_mask | virtual_mask, fpu_register | virtual_mask); } 377 bool is_fixed_fpu() const { validate_type(); return check_value_mask(kind_mask | virtual_mask, fpu_register); } 378 bool is_single_fpu() const { validate_type(); return check_value_mask(kind_mask | size_mask, fpu_register | single_size); } 379 bool is_double_fpu() const { validate_type(); return check_value_mask(kind_mask | size_mask, fpu_register | double_size); } 380 381 bool is_xmm_register() const { validate_type(); return check_value_mask(kind_mask | is_xmm_mask, fpu_register | is_xmm_mask); } 382 bool is_single_xmm() const { validate_type(); return check_value_mask(kind_mask | size_mask | is_xmm_mask, fpu_register | single_size | is_xmm_mask); } 383 bool is_double_xmm() const { validate_type(); return check_value_mask(kind_mask | size_mask | is_xmm_mask, fpu_register | double_size | is_xmm_mask); } 384 385 // fast accessor functions for special bits that do not work for pointers 386 // (in this functions, the check for is_pointer() is omitted) 387 bool is_single_word() const { assert(is_register() || is_stack(), "type check"); return check_value_mask(size_mask, single_size); } 388 bool is_double_word() const { assert(is_register() || is_stack(), "type check"); return check_value_mask(size_mask, double_size); } 389 bool is_virtual_register() const { assert(is_register(), "type check"); return check_value_mask(virtual_mask, virtual_mask); } 390 bool is_oop_register() const { assert(is_register() || is_stack(), "type check"); return type_field_valid() == object_type; } 391 BasicType type_register() const { assert(is_register() || is_stack(), "type check"); return as_BasicType(type_field_valid()); } 392 393 bool is_last_use() const { assert(is_register(), "only works for registers"); return (value() & last_use_mask) != 0; } 394 bool is_fpu_stack_offset() const { assert(is_register(), "only works for registers"); return (value() & is_fpu_stack_offset_mask) != 0; } 395 LIR_Opr make_last_use() { assert(is_register(), "only works for registers"); return (LIR_Opr)(value() | last_use_mask); } 396 LIR_Opr make_fpu_stack_offset() { assert(is_register(), "only works for registers"); return (LIR_Opr)(value() | is_fpu_stack_offset_mask); } 397 398 399 int single_stack_ix() const { assert(is_single_stack() && !is_virtual(), "type check"); return (int)data(); } 400 int double_stack_ix() const { assert(is_double_stack() && !is_virtual(), "type check"); return (int)data(); } 401 RegNr cpu_regnr() const { assert(is_single_cpu() && !is_virtual(), "type check"); return (RegNr)data(); } 402 RegNr cpu_regnrLo() const { assert(is_double_cpu() && !is_virtual(), "type check"); return (RegNr)lo_reg_half(); } 403 RegNr cpu_regnrHi() const { assert(is_double_cpu() && !is_virtual(), "type check"); return (RegNr)hi_reg_half(); } 404 RegNr fpu_regnr() const { assert(is_single_fpu() && !is_virtual(), "type check"); return (RegNr)data(); } 405 RegNr fpu_regnrLo() const { assert(is_double_fpu() && !is_virtual(), "type check"); return (RegNr)lo_reg_half(); } 406 RegNr fpu_regnrHi() const { assert(is_double_fpu() && !is_virtual(), "type check"); return (RegNr)hi_reg_half(); } 407 RegNr xmm_regnr() const { assert(is_single_xmm() && !is_virtual(), "type check"); return (RegNr)data(); } 408 RegNr xmm_regnrLo() const { assert(is_double_xmm() && !is_virtual(), "type check"); return (RegNr)lo_reg_half(); } 409 RegNr xmm_regnrHi() const { assert(is_double_xmm() && !is_virtual(), "type check"); return (RegNr)hi_reg_half(); } 410 int vreg_number() const { assert(is_virtual(), "type check"); return (RegNr)data(); } 411 412 LIR_OprPtr* pointer() const { assert(is_pointer(), "type check"); return (LIR_OprPtr*)this; } 413 LIR_Const* as_constant_ptr() const { return pointer()->as_constant(); } 414 LIR_Address* as_address_ptr() const { return pointer()->as_address(); } 415 416 Register as_register() const; 417 Register as_register_lo() const; 418 Register as_register_hi() const; 419 420 Register as_pointer_register() { 421 #ifdef _LP64 422 if (is_double_cpu()) { 423 assert(as_register_lo() == as_register_hi(), "should be a single register"); 424 return as_register_lo(); 425 } 426 #endif 427 return as_register(); 428 } 429 430 #ifdef X86 431 XMMRegister as_xmm_float_reg() const; 432 XMMRegister as_xmm_double_reg() const; 433 // for compatibility with RInfo 434 int fpu () const { return lo_reg_half(); } 435 #endif // X86 436 #if defined(SPARC) || defined(ARM) || defined(PPC) 437 FloatRegister as_float_reg () const; 438 FloatRegister as_double_reg () const; 439 #endif 440 441 jint as_jint() const { return as_constant_ptr()->as_jint(); } 442 jlong as_jlong() const { return as_constant_ptr()->as_jlong(); } 443 jfloat as_jfloat() const { return as_constant_ptr()->as_jfloat(); } 444 jdouble as_jdouble() const { return as_constant_ptr()->as_jdouble(); } 445 jobject as_jobject() const { return as_constant_ptr()->as_jobject(); } 446 447 void print() const PRODUCT_RETURN; 448 void print(outputStream* out) const PRODUCT_RETURN; 449 }; 450 451 452 inline LIR_OprDesc::OprType as_OprType(BasicType type) { 453 switch (type) { 454 case T_INT: return LIR_OprDesc::int_type; 455 case T_LONG: return LIR_OprDesc::long_type; 456 case T_FLOAT: return LIR_OprDesc::float_type; 457 case T_DOUBLE: return LIR_OprDesc::double_type; 458 case T_OBJECT: 459 case T_ARRAY: return LIR_OprDesc::object_type; 460 case T_ADDRESS: return LIR_OprDesc::address_type; 461 case T_ILLEGAL: // fall through 462 default: ShouldNotReachHere(); return LIR_OprDesc::unknown_type; 463 } 464 } 465 466 inline BasicType as_BasicType(LIR_OprDesc::OprType t) { 467 switch (t) { 468 case LIR_OprDesc::int_type: return T_INT; 469 case LIR_OprDesc::long_type: return T_LONG; 470 case LIR_OprDesc::float_type: return T_FLOAT; 471 case LIR_OprDesc::double_type: return T_DOUBLE; 472 case LIR_OprDesc::object_type: return T_OBJECT; 473 case LIR_OprDesc::address_type: return T_ADDRESS; 474 case LIR_OprDesc::unknown_type: // fall through 475 default: ShouldNotReachHere(); return T_ILLEGAL; 476 } 477 } 478 479 480 // LIR_Address 481 class LIR_Address: public LIR_OprPtr { 482 friend class LIR_OpVisitState; 483 484 public: 485 // NOTE: currently these must be the log2 of the scale factor (and 486 // must also be equivalent to the ScaleFactor enum in 487 // assembler_i486.hpp) 488 enum Scale { 489 times_1 = 0, 490 times_2 = 1, 491 times_4 = 2, 492 times_8 = 3 493 }; 494 495 private: 496 LIR_Opr _base; 497 LIR_Opr _index; 498 Scale _scale; 499 intx _disp; 500 BasicType _type; 501 502 public: 503 LIR_Address(LIR_Opr base, LIR_Opr index, BasicType type): 504 _base(base) 505 , _index(index) 506 , _scale(times_1) 507 , _type(type) 508 , _disp(0) { verify(); } 509 510 LIR_Address(LIR_Opr base, intx disp, BasicType type): 511 _base(base) 512 , _index(LIR_OprDesc::illegalOpr()) 513 , _scale(times_1) 514 , _type(type) 515 , _disp(disp) { verify(); } 516 517 LIR_Address(LIR_Opr base, BasicType type): 518 _base(base) 519 , _index(LIR_OprDesc::illegalOpr()) 520 , _scale(times_1) 521 , _type(type) 522 , _disp(0) { verify(); } 523 524 #if defined(X86) || defined(ARM) 525 LIR_Address(LIR_Opr base, LIR_Opr index, Scale scale, intx disp, BasicType type): 526 _base(base) 527 , _index(index) 528 , _scale(scale) 529 , _type(type) 530 , _disp(disp) { verify(); } 531 #endif // X86 || ARM 532 533 LIR_Opr base() const { return _base; } 534 LIR_Opr index() const { return _index; } 535 Scale scale() const { return _scale; } 536 intx disp() const { return _disp; } 537 538 bool equals(LIR_Address* other) const { return base() == other->base() && index() == other->index() && disp() == other->disp() && scale() == other->scale(); } 539 540 virtual LIR_Address* as_address() { return this; } 541 virtual BasicType type() const { return _type; } 542 virtual void print_value_on(outputStream* out) const PRODUCT_RETURN; 543 544 void verify() const PRODUCT_RETURN; 545 546 static Scale scale(BasicType type); 547 }; 548 549 550 // operand factory 551 class LIR_OprFact: public AllStatic { 552 public: 553 554 static LIR_Opr illegalOpr; 555 556 static LIR_Opr single_cpu(int reg) { 557 return (LIR_Opr)(intptr_t)((reg << LIR_OprDesc::reg1_shift) | 558 LIR_OprDesc::int_type | 559 LIR_OprDesc::cpu_register | 560 LIR_OprDesc::single_size); 561 } 562 static LIR_Opr single_cpu_oop(int reg) { 563 return (LIR_Opr)(intptr_t)((reg << LIR_OprDesc::reg1_shift) | 564 LIR_OprDesc::object_type | 565 LIR_OprDesc::cpu_register | 566 LIR_OprDesc::single_size); 567 } 568 static LIR_Opr single_cpu_address(int reg) { 569 return (LIR_Opr)(intptr_t)((reg << LIR_OprDesc::reg1_shift) | 570 LIR_OprDesc::address_type | 571 LIR_OprDesc::cpu_register | 572 LIR_OprDesc::single_size); 573 } 574 static LIR_Opr double_cpu(int reg1, int reg2) { 575 LP64_ONLY(assert(reg1 == reg2, "must be identical")); 576 return (LIR_Opr)(intptr_t)((reg1 << LIR_OprDesc::reg1_shift) | 577 (reg2 << LIR_OprDesc::reg2_shift) | 578 LIR_OprDesc::long_type | 579 LIR_OprDesc::cpu_register | 580 LIR_OprDesc::double_size); 581 } 582 583 static LIR_Opr single_fpu(int reg) { return (LIR_Opr)(intptr_t)((reg << LIR_OprDesc::reg1_shift) | 584 LIR_OprDesc::float_type | 585 LIR_OprDesc::fpu_register | 586 LIR_OprDesc::single_size); } 587 #if defined(ARM) 588 static LIR_Opr double_fpu(int reg1, int reg2) { return (LIR_Opr)((reg1 << LIR_OprDesc::reg1_shift) | (reg2 << LIR_OprDesc::reg2_shift) | LIR_OprDesc::double_type | LIR_OprDesc::fpu_register | LIR_OprDesc::double_size); } 589 static LIR_Opr single_softfp(int reg) { return (LIR_Opr)((reg << LIR_OprDesc::reg1_shift) | LIR_OprDesc::float_type | LIR_OprDesc::cpu_register | LIR_OprDesc::single_size); } 590 static LIR_Opr double_softfp(int reg1, int reg2) { return (LIR_Opr)((reg1 << LIR_OprDesc::reg1_shift) | (reg2 << LIR_OprDesc::reg2_shift) | LIR_OprDesc::double_type | LIR_OprDesc::cpu_register | LIR_OprDesc::double_size); } 591 #endif 592 #ifdef SPARC 593 static LIR_Opr double_fpu(int reg1, int reg2) { return (LIR_Opr)(intptr_t)((reg1 << LIR_OprDesc::reg1_shift) | 594 (reg2 << LIR_OprDesc::reg2_shift) | 595 LIR_OprDesc::double_type | 596 LIR_OprDesc::fpu_register | 597 LIR_OprDesc::double_size); } 598 #endif 599 #ifdef X86 600 static LIR_Opr double_fpu(int reg) { return (LIR_Opr)(intptr_t)((reg << LIR_OprDesc::reg1_shift) | 601 (reg << LIR_OprDesc::reg2_shift) | 602 LIR_OprDesc::double_type | 603 LIR_OprDesc::fpu_register | 604 LIR_OprDesc::double_size); } 605 606 static LIR_Opr single_xmm(int reg) { return (LIR_Opr)(intptr_t)((reg << LIR_OprDesc::reg1_shift) | 607 LIR_OprDesc::float_type | 608 LIR_OprDesc::fpu_register | 609 LIR_OprDesc::single_size | 610 LIR_OprDesc::is_xmm_mask); } 611 static LIR_Opr double_xmm(int reg) { return (LIR_Opr)(intptr_t)((reg << LIR_OprDesc::reg1_shift) | 612 (reg << LIR_OprDesc::reg2_shift) | 613 LIR_OprDesc::double_type | 614 LIR_OprDesc::fpu_register | 615 LIR_OprDesc::double_size | 616 LIR_OprDesc::is_xmm_mask); } 617 #endif // X86 618 #ifdef PPC 619 static LIR_Opr double_fpu(int reg) { return (LIR_Opr)(intptr_t)((reg << LIR_OprDesc::reg1_shift) | 620 (reg << LIR_OprDesc::reg2_shift) | 621 LIR_OprDesc::double_type | 622 LIR_OprDesc::fpu_register | 623 LIR_OprDesc::double_size); } 624 static LIR_Opr single_softfp(int reg) { return (LIR_Opr)((reg << LIR_OprDesc::reg1_shift) | 625 LIR_OprDesc::float_type | 626 LIR_OprDesc::cpu_register | 627 LIR_OprDesc::single_size); } 628 static LIR_Opr double_softfp(int reg1, int reg2) { return (LIR_Opr)((reg2 << LIR_OprDesc::reg1_shift) | 629 (reg1 << LIR_OprDesc::reg2_shift) | 630 LIR_OprDesc::double_type | 631 LIR_OprDesc::cpu_register | 632 LIR_OprDesc::double_size); } 633 #endif // PPC 634 635 static LIR_Opr virtual_register(int index, BasicType type) { 636 LIR_Opr res; 637 switch (type) { 638 case T_OBJECT: // fall through 639 case T_ARRAY: 640 res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) | 641 LIR_OprDesc::object_type | 642 LIR_OprDesc::cpu_register | 643 LIR_OprDesc::single_size | 644 LIR_OprDesc::virtual_mask); 645 break; 646 647 case T_INT: 648 res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) | 649 LIR_OprDesc::int_type | 650 LIR_OprDesc::cpu_register | 651 LIR_OprDesc::single_size | 652 LIR_OprDesc::virtual_mask); 653 break; 654 655 case T_ADDRESS: 656 res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) | 657 LIR_OprDesc::address_type | 658 LIR_OprDesc::cpu_register | 659 LIR_OprDesc::single_size | 660 LIR_OprDesc::virtual_mask); 661 break; 662 663 case T_LONG: 664 res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) | 665 LIR_OprDesc::long_type | 666 LIR_OprDesc::cpu_register | 667 LIR_OprDesc::double_size | 668 LIR_OprDesc::virtual_mask); 669 break; 670 671 #ifdef __SOFTFP__ 672 case T_FLOAT: 673 res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) | 674 LIR_OprDesc::float_type | 675 LIR_OprDesc::cpu_register | 676 LIR_OprDesc::single_size | 677 LIR_OprDesc::virtual_mask); 678 break; 679 case T_DOUBLE: 680 res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) | 681 LIR_OprDesc::double_type | 682 LIR_OprDesc::cpu_register | 683 LIR_OprDesc::double_size | 684 LIR_OprDesc::virtual_mask); 685 break; 686 #else // __SOFTFP__ 687 case T_FLOAT: 688 res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) | 689 LIR_OprDesc::float_type | 690 LIR_OprDesc::fpu_register | 691 LIR_OprDesc::single_size | 692 LIR_OprDesc::virtual_mask); 693 break; 694 695 case 696 T_DOUBLE: res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) | 697 LIR_OprDesc::double_type | 698 LIR_OprDesc::fpu_register | 699 LIR_OprDesc::double_size | 700 LIR_OprDesc::virtual_mask); 701 break; 702 #endif // __SOFTFP__ 703 default: ShouldNotReachHere(); res = illegalOpr; 704 } 705 706 #ifdef ASSERT 707 res->validate_type(); 708 assert(res->vreg_number() == index, "conversion check"); 709 assert(index >= LIR_OprDesc::vreg_base, "must start at vreg_base"); 710 assert(index <= (max_jint >> LIR_OprDesc::data_shift), "index is too big"); 711 712 // old-style calculation; check if old and new method are equal 713 LIR_OprDesc::OprType t = as_OprType(type); 714 #ifdef __SOFTFP__ 715 LIR_Opr old_res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) | 716 t | 717 LIR_OprDesc::cpu_register | 718 LIR_OprDesc::size_for(type) | LIR_OprDesc::virtual_mask); 719 #else // __SOFTFP__ 720 LIR_Opr old_res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) | t | 721 ((type == T_FLOAT || type == T_DOUBLE) ? LIR_OprDesc::fpu_register : LIR_OprDesc::cpu_register) | 722 LIR_OprDesc::size_for(type) | LIR_OprDesc::virtual_mask); 723 assert(res == old_res, "old and new method not equal"); 724 #endif // __SOFTFP__ 725 #endif // ASSERT 726 727 return res; 728 } 729 730 // 'index' is computed by FrameMap::local_stack_pos(index); do not use other parameters as 731 // the index is platform independent; a double stack useing indeces 2 and 3 has always 732 // index 2. 733 static LIR_Opr stack(int index, BasicType type) { 734 LIR_Opr res; 735 switch (type) { 736 case T_OBJECT: // fall through 737 case T_ARRAY: 738 res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) | 739 LIR_OprDesc::object_type | 740 LIR_OprDesc::stack_value | 741 LIR_OprDesc::single_size); 742 break; 743 744 case T_INT: 745 res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) | 746 LIR_OprDesc::int_type | 747 LIR_OprDesc::stack_value | 748 LIR_OprDesc::single_size); 749 break; 750 751 case T_ADDRESS: 752 res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) | 753 LIR_OprDesc::address_type | 754 LIR_OprDesc::stack_value | 755 LIR_OprDesc::single_size); 756 break; 757 758 case T_LONG: 759 res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) | 760 LIR_OprDesc::long_type | 761 LIR_OprDesc::stack_value | 762 LIR_OprDesc::double_size); 763 break; 764 765 case T_FLOAT: 766 res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) | 767 LIR_OprDesc::float_type | 768 LIR_OprDesc::stack_value | 769 LIR_OprDesc::single_size); 770 break; 771 case T_DOUBLE: 772 res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) | 773 LIR_OprDesc::double_type | 774 LIR_OprDesc::stack_value | 775 LIR_OprDesc::double_size); 776 break; 777 778 default: ShouldNotReachHere(); res = illegalOpr; 779 } 780 781 #ifdef ASSERT 782 assert(index >= 0, "index must be positive"); 783 assert(index <= (max_jint >> LIR_OprDesc::data_shift), "index is too big"); 784 785 LIR_Opr old_res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) | 786 LIR_OprDesc::stack_value | 787 as_OprType(type) | 788 LIR_OprDesc::size_for(type)); 789 assert(res == old_res, "old and new method not equal"); 790 #endif 791 792 return res; 793 } 794 795 static LIR_Opr intConst(jint i) { return (LIR_Opr)(new LIR_Const(i)); } 796 static LIR_Opr longConst(jlong l) { return (LIR_Opr)(new LIR_Const(l)); } 797 static LIR_Opr floatConst(jfloat f) { return (LIR_Opr)(new LIR_Const(f)); } 798 static LIR_Opr doubleConst(jdouble d) { return (LIR_Opr)(new LIR_Const(d)); } 799 static LIR_Opr oopConst(jobject o) { return (LIR_Opr)(new LIR_Const(o)); } 800 static LIR_Opr address(LIR_Address* a) { return (LIR_Opr)a; } 801 static LIR_Opr intptrConst(void* p) { return (LIR_Opr)(new LIR_Const(p)); } 802 static LIR_Opr intptrConst(intptr_t v) { return (LIR_Opr)(new LIR_Const((void*)v)); } 803 static LIR_Opr illegal() { return (LIR_Opr)-1; } 804 static LIR_Opr addressConst(jint i) { return (LIR_Opr)(new LIR_Const(i, true)); } 805 806 static LIR_Opr value_type(ValueType* type); 807 static LIR_Opr dummy_value_type(ValueType* type); 808 }; 809 810 811 //------------------------------------------------------------------------------- 812 // LIR Instructions 813 //------------------------------------------------------------------------------- 814 // 815 // Note: 816 // - every instruction has a result operand 817 // - every instruction has an CodeEmitInfo operand (can be revisited later) 818 // - every instruction has a LIR_OpCode operand 819 // - LIR_OpN, means an instruction that has N input operands 820 // 821 // class hierarchy: 822 // 823 class LIR_Op; 824 class LIR_Op0; 825 class LIR_OpLabel; 826 class LIR_Op1; 827 class LIR_OpBranch; 828 class LIR_OpConvert; 829 class LIR_OpAllocObj; 830 class LIR_OpRoundFP; 831 class LIR_Op2; 832 class LIR_OpDelay; 833 class LIR_Op3; 834 class LIR_OpAllocArray; 835 class LIR_OpCall; 836 class LIR_OpJavaCall; 837 class LIR_OpRTCall; 838 class LIR_OpArrayCopy; 839 class LIR_OpLock; 840 class LIR_OpTypeCheck; 841 class LIR_OpCompareAndSwap; 842 class LIR_OpProfileCall; 843 844 845 // LIR operation codes 846 enum LIR_Code { 847 lir_none 848 , begin_op0 849 , lir_word_align 850 , lir_label 851 , lir_nop 852 , lir_backwardbranch_target 853 , lir_std_entry 854 , lir_osr_entry 855 , lir_build_frame 856 , lir_fpop_raw 857 , lir_24bit_FPU 858 , lir_reset_FPU 859 , lir_breakpoint 860 , lir_rtcall 861 , lir_membar 862 , lir_membar_acquire 863 , lir_membar_release 864 , lir_get_thread 865 , end_op0 866 , begin_op1 867 , lir_fxch 868 , lir_fld 869 , lir_ffree 870 , lir_push 871 , lir_pop 872 , lir_null_check 873 , lir_return 874 , lir_leal 875 , lir_neg 876 , lir_branch 877 , lir_cond_float_branch 878 , lir_move 879 , lir_prefetchr 880 , lir_prefetchw 881 , lir_convert 882 , lir_alloc_object 883 , lir_monaddr 884 , lir_roundfp 885 , lir_safepoint 886 , lir_pack64 887 , lir_unpack64 888 , lir_unwind 889 , end_op1 890 , begin_op2 891 , lir_cmp 892 , lir_cmp_l2i 893 , lir_ucmp_fd2i 894 , lir_cmp_fd2i 895 , lir_cmove 896 , lir_add 897 , lir_sub 898 , lir_mul 899 , lir_mul_strictfp 900 , lir_div 901 , lir_div_strictfp 902 , lir_rem 903 , lir_sqrt 904 , lir_abs 905 , lir_sin 906 , lir_cos 907 , lir_tan 908 , lir_log 909 , lir_log10 910 , lir_logic_and 911 , lir_logic_or 912 , lir_logic_xor 913 , lir_shl 914 , lir_shr 915 , lir_ushr 916 , lir_alloc_array 917 , lir_throw 918 , lir_compare_to 919 , end_op2 920 , begin_op3 921 , lir_idiv 922 , lir_irem 923 , end_op3 924 , begin_opJavaCall 925 , lir_static_call 926 , lir_optvirtual_call 927 , lir_icvirtual_call 928 , lir_virtual_call 929 , lir_dynamic_call 930 , end_opJavaCall 931 , begin_opArrayCopy 932 , lir_arraycopy 933 , end_opArrayCopy 934 , begin_opLock 935 , lir_lock 936 , lir_unlock 937 , end_opLock 938 , begin_delay_slot 939 , lir_delay_slot 940 , end_delay_slot 941 , begin_opTypeCheck 942 , lir_instanceof 943 , lir_checkcast 944 , lir_store_check 945 , end_opTypeCheck 946 , begin_opCompareAndSwap 947 , lir_cas_long 948 , lir_cas_obj 949 , lir_cas_int 950 , end_opCompareAndSwap 951 , begin_opMDOProfile 952 , lir_profile_call 953 , end_opMDOProfile 954 }; 955 956 957 enum LIR_Condition { 958 lir_cond_equal 959 , lir_cond_notEqual 960 , lir_cond_less 961 , lir_cond_lessEqual 962 , lir_cond_greaterEqual 963 , lir_cond_greater 964 , lir_cond_belowEqual 965 , lir_cond_aboveEqual 966 , lir_cond_always 967 , lir_cond_unknown = -1 968 }; 969 970 971 enum LIR_PatchCode { 972 lir_patch_none, 973 lir_patch_low, 974 lir_patch_high, 975 lir_patch_normal 976 }; 977 978 979 enum LIR_MoveKind { 980 lir_move_normal, 981 lir_move_volatile, 982 lir_move_unaligned, 983 lir_move_max_flag 984 }; 985 986 987 // -------------------------------------------------- 988 // LIR_Op 989 // -------------------------------------------------- 990 class LIR_Op: public CompilationResourceObj { 991 friend class LIR_OpVisitState; 992 993 #ifdef ASSERT 994 private: 995 const char * _file; 996 int _line; 997 #endif 998 999 protected: 1000 LIR_Opr _result; 1001 unsigned short _code; 1002 unsigned short _flags; 1003 CodeEmitInfo* _info; 1004 int _id; // value id for register allocation 1005 int _fpu_pop_count; 1006 Instruction* _source; // for debugging 1007 1008 static void print_condition(outputStream* out, LIR_Condition cond) PRODUCT_RETURN; 1009 1010 protected: 1011 static bool is_in_range(LIR_Code test, LIR_Code start, LIR_Code end) { return start < test && test < end; } 1012 1013 public: 1014 LIR_Op() 1015 : _result(LIR_OprFact::illegalOpr) 1016 , _code(lir_none) 1017 , _flags(0) 1018 , _info(NULL) 1019 #ifdef ASSERT 1020 , _file(NULL) 1021 , _line(0) 1022 #endif 1023 , _fpu_pop_count(0) 1024 , _source(NULL) 1025 , _id(-1) {} 1026 1027 LIR_Op(LIR_Code code, LIR_Opr result, CodeEmitInfo* info) 1028 : _result(result) 1029 , _code(code) 1030 , _flags(0) 1031 , _info(info) 1032 #ifdef ASSERT 1033 , _file(NULL) 1034 , _line(0) 1035 #endif 1036 , _fpu_pop_count(0) 1037 , _source(NULL) 1038 , _id(-1) {} 1039 1040 CodeEmitInfo* info() const { return _info; } 1041 LIR_Code code() const { return (LIR_Code)_code; } 1042 LIR_Opr result_opr() const { return _result; } 1043 void set_result_opr(LIR_Opr opr) { _result = opr; } 1044 1045 #ifdef ASSERT 1046 void set_file_and_line(const char * file, int line) { 1047 _file = file; 1048 _line = line; 1049 } 1050 #endif 1051 1052 virtual const char * name() const PRODUCT_RETURN0; 1053 1054 int id() const { return _id; } 1055 void set_id(int id) { _id = id; } 1056 1057 // FPU stack simulation helpers -- only used on Intel 1058 void set_fpu_pop_count(int count) { assert(count >= 0 && count <= 1, "currently only 0 and 1 are valid"); _fpu_pop_count = count; } 1059 int fpu_pop_count() const { return _fpu_pop_count; } 1060 bool pop_fpu_stack() { return _fpu_pop_count > 0; } 1061 1062 Instruction* source() const { return _source; } 1063 void set_source(Instruction* ins) { _source = ins; } 1064 1065 virtual void emit_code(LIR_Assembler* masm) = 0; 1066 virtual void print_instr(outputStream* out) const = 0; 1067 virtual void print_on(outputStream* st) const PRODUCT_RETURN; 1068 1069 virtual LIR_OpCall* as_OpCall() { return NULL; } 1070 virtual LIR_OpJavaCall* as_OpJavaCall() { return NULL; } 1071 virtual LIR_OpLabel* as_OpLabel() { return NULL; } 1072 virtual LIR_OpDelay* as_OpDelay() { return NULL; } 1073 virtual LIR_OpLock* as_OpLock() { return NULL; } 1074 virtual LIR_OpAllocArray* as_OpAllocArray() { return NULL; } 1075 virtual LIR_OpAllocObj* as_OpAllocObj() { return NULL; } 1076 virtual LIR_OpRoundFP* as_OpRoundFP() { return NULL; } 1077 virtual LIR_OpBranch* as_OpBranch() { return NULL; } 1078 virtual LIR_OpRTCall* as_OpRTCall() { return NULL; } 1079 virtual LIR_OpConvert* as_OpConvert() { return NULL; } 1080 virtual LIR_Op0* as_Op0() { return NULL; } 1081 virtual LIR_Op1* as_Op1() { return NULL; } 1082 virtual LIR_Op2* as_Op2() { return NULL; } 1083 virtual LIR_Op3* as_Op3() { return NULL; } 1084 virtual LIR_OpArrayCopy* as_OpArrayCopy() { return NULL; } 1085 virtual LIR_OpTypeCheck* as_OpTypeCheck() { return NULL; } 1086 virtual LIR_OpCompareAndSwap* as_OpCompareAndSwap() { return NULL; } 1087 virtual LIR_OpProfileCall* as_OpProfileCall() { return NULL; } 1088 1089 virtual void verify() const {} 1090 }; 1091 1092 // for calls 1093 class LIR_OpCall: public LIR_Op { 1094 friend class LIR_OpVisitState; 1095 1096 protected: 1097 address _addr; 1098 LIR_OprList* _arguments; 1099 protected: 1100 LIR_OpCall(LIR_Code code, address addr, LIR_Opr result, 1101 LIR_OprList* arguments, CodeEmitInfo* info = NULL) 1102 : LIR_Op(code, result, info) 1103 , _arguments(arguments) 1104 , _addr(addr) {} 1105 1106 public: 1107 address addr() const { return _addr; } 1108 const LIR_OprList* arguments() const { return _arguments; } 1109 virtual LIR_OpCall* as_OpCall() { return this; } 1110 }; 1111 1112 1113 // -------------------------------------------------- 1114 // LIR_OpJavaCall 1115 // -------------------------------------------------- 1116 class LIR_OpJavaCall: public LIR_OpCall { 1117 friend class LIR_OpVisitState; 1118 1119 private: 1120 ciMethod* _method; 1121 LIR_Opr _receiver; 1122 LIR_Opr _method_handle_invoke_SP_save_opr; // Used in LIR_OpVisitState::visit to store the reference to FrameMap::method_handle_invoke_SP_save_opr. 1123 1124 public: 1125 LIR_OpJavaCall(LIR_Code code, ciMethod* method, 1126 LIR_Opr receiver, LIR_Opr result, 1127 address addr, LIR_OprList* arguments, 1128 CodeEmitInfo* info) 1129 : LIR_OpCall(code, addr, result, arguments, info) 1130 , _receiver(receiver) 1131 , _method(method) 1132 , _method_handle_invoke_SP_save_opr(LIR_OprFact::illegalOpr) 1133 { assert(is_in_range(code, begin_opJavaCall, end_opJavaCall), "code check"); } 1134 1135 LIR_OpJavaCall(LIR_Code code, ciMethod* method, 1136 LIR_Opr receiver, LIR_Opr result, intptr_t vtable_offset, 1137 LIR_OprList* arguments, CodeEmitInfo* info) 1138 : LIR_OpCall(code, (address)vtable_offset, result, arguments, info) 1139 , _receiver(receiver) 1140 , _method(method) 1141 , _method_handle_invoke_SP_save_opr(LIR_OprFact::illegalOpr) 1142 { assert(is_in_range(code, begin_opJavaCall, end_opJavaCall), "code check"); } 1143 1144 LIR_Opr receiver() const { return _receiver; } 1145 ciMethod* method() const { return _method; } 1146 1147 // JSR 292 support. 1148 bool is_invokedynamic() const { return code() == lir_dynamic_call; } 1149 bool is_method_handle_invoke() const { 1150 return 1151 is_invokedynamic() // An invokedynamic is always a MethodHandle call site. 1152 || 1153 (method()->holder()->name() == ciSymbol::java_dyn_MethodHandle() && 1154 methodOopDesc::is_method_handle_invoke_name(method()->name()->sid())); 1155 } 1156 1157 intptr_t vtable_offset() const { 1158 assert(_code == lir_virtual_call, "only have vtable for real vcall"); 1159 return (intptr_t) addr(); 1160 } 1161 1162 virtual void emit_code(LIR_Assembler* masm); 1163 virtual LIR_OpJavaCall* as_OpJavaCall() { return this; } 1164 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 1165 }; 1166 1167 // -------------------------------------------------- 1168 // LIR_OpLabel 1169 // -------------------------------------------------- 1170 // Location where a branch can continue 1171 class LIR_OpLabel: public LIR_Op { 1172 friend class LIR_OpVisitState; 1173 1174 private: 1175 Label* _label; 1176 public: 1177 LIR_OpLabel(Label* lbl) 1178 : LIR_Op(lir_label, LIR_OprFact::illegalOpr, NULL) 1179 , _label(lbl) {} 1180 Label* label() const { return _label; } 1181 1182 virtual void emit_code(LIR_Assembler* masm); 1183 virtual LIR_OpLabel* as_OpLabel() { return this; } 1184 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 1185 }; 1186 1187 // LIR_OpArrayCopy 1188 class LIR_OpArrayCopy: public LIR_Op { 1189 friend class LIR_OpVisitState; 1190 1191 private: 1192 ArrayCopyStub* _stub; 1193 LIR_Opr _src; 1194 LIR_Opr _src_pos; 1195 LIR_Opr _dst; 1196 LIR_Opr _dst_pos; 1197 LIR_Opr _length; 1198 LIR_Opr _tmp; 1199 ciArrayKlass* _expected_type; 1200 int _flags; 1201 1202 public: 1203 enum Flags { 1204 src_null_check = 1 << 0, 1205 dst_null_check = 1 << 1, 1206 src_pos_positive_check = 1 << 2, 1207 dst_pos_positive_check = 1 << 3, 1208 length_positive_check = 1 << 4, 1209 src_range_check = 1 << 5, 1210 dst_range_check = 1 << 6, 1211 type_check = 1 << 7, 1212 all_flags = (1 << 8) - 1 1213 }; 1214 1215 LIR_OpArrayCopy(LIR_Opr src, LIR_Opr src_pos, LIR_Opr dst, LIR_Opr dst_pos, LIR_Opr length, LIR_Opr tmp, 1216 ciArrayKlass* expected_type, int flags, CodeEmitInfo* info); 1217 1218 LIR_Opr src() const { return _src; } 1219 LIR_Opr src_pos() const { return _src_pos; } 1220 LIR_Opr dst() const { return _dst; } 1221 LIR_Opr dst_pos() const { return _dst_pos; } 1222 LIR_Opr length() const { return _length; } 1223 LIR_Opr tmp() const { return _tmp; } 1224 int flags() const { return _flags; } 1225 ciArrayKlass* expected_type() const { return _expected_type; } 1226 ArrayCopyStub* stub() const { return _stub; } 1227 1228 virtual void emit_code(LIR_Assembler* masm); 1229 virtual LIR_OpArrayCopy* as_OpArrayCopy() { return this; } 1230 void print_instr(outputStream* out) const PRODUCT_RETURN; 1231 }; 1232 1233 1234 // -------------------------------------------------- 1235 // LIR_Op0 1236 // -------------------------------------------------- 1237 class LIR_Op0: public LIR_Op { 1238 friend class LIR_OpVisitState; 1239 1240 public: 1241 LIR_Op0(LIR_Code code) 1242 : LIR_Op(code, LIR_OprFact::illegalOpr, NULL) { assert(is_in_range(code, begin_op0, end_op0), "code check"); } 1243 LIR_Op0(LIR_Code code, LIR_Opr result, CodeEmitInfo* info = NULL) 1244 : LIR_Op(code, result, info) { assert(is_in_range(code, begin_op0, end_op0), "code check"); } 1245 1246 virtual void emit_code(LIR_Assembler* masm); 1247 virtual LIR_Op0* as_Op0() { return this; } 1248 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 1249 }; 1250 1251 1252 // -------------------------------------------------- 1253 // LIR_Op1 1254 // -------------------------------------------------- 1255 1256 class LIR_Op1: public LIR_Op { 1257 friend class LIR_OpVisitState; 1258 1259 protected: 1260 LIR_Opr _opr; // input operand 1261 BasicType _type; // Operand types 1262 LIR_PatchCode _patch; // only required with patchin (NEEDS_CLEANUP: do we want a special instruction for patching?) 1263 1264 static void print_patch_code(outputStream* out, LIR_PatchCode code); 1265 1266 void set_kind(LIR_MoveKind kind) { 1267 assert(code() == lir_move, "must be"); 1268 _flags = kind; 1269 } 1270 1271 public: 1272 LIR_Op1(LIR_Code code, LIR_Opr opr, LIR_Opr result = LIR_OprFact::illegalOpr, BasicType type = T_ILLEGAL, LIR_PatchCode patch = lir_patch_none, CodeEmitInfo* info = NULL) 1273 : LIR_Op(code, result, info) 1274 , _opr(opr) 1275 , _patch(patch) 1276 , _type(type) { assert(is_in_range(code, begin_op1, end_op1), "code check"); } 1277 1278 LIR_Op1(LIR_Code code, LIR_Opr opr, LIR_Opr result, BasicType type, LIR_PatchCode patch, CodeEmitInfo* info, LIR_MoveKind kind) 1279 : LIR_Op(code, result, info) 1280 , _opr(opr) 1281 , _patch(patch) 1282 , _type(type) { 1283 assert(code == lir_move, "must be"); 1284 set_kind(kind); 1285 } 1286 1287 LIR_Op1(LIR_Code code, LIR_Opr opr, CodeEmitInfo* info) 1288 : LIR_Op(code, LIR_OprFact::illegalOpr, info) 1289 , _opr(opr) 1290 , _patch(lir_patch_none) 1291 , _type(T_ILLEGAL) { assert(is_in_range(code, begin_op1, end_op1), "code check"); } 1292 1293 LIR_Opr in_opr() const { return _opr; } 1294 LIR_PatchCode patch_code() const { return _patch; } 1295 BasicType type() const { return _type; } 1296 1297 LIR_MoveKind move_kind() const { 1298 assert(code() == lir_move, "must be"); 1299 return (LIR_MoveKind)_flags; 1300 } 1301 1302 virtual void emit_code(LIR_Assembler* masm); 1303 virtual LIR_Op1* as_Op1() { return this; } 1304 virtual const char * name() const PRODUCT_RETURN0; 1305 1306 void set_in_opr(LIR_Opr opr) { _opr = opr; } 1307 1308 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 1309 virtual void verify() const; 1310 }; 1311 1312 1313 // for runtime calls 1314 class LIR_OpRTCall: public LIR_OpCall { 1315 friend class LIR_OpVisitState; 1316 1317 private: 1318 LIR_Opr _tmp; 1319 public: 1320 LIR_OpRTCall(address addr, LIR_Opr tmp, 1321 LIR_Opr result, LIR_OprList* arguments, CodeEmitInfo* info = NULL) 1322 : LIR_OpCall(lir_rtcall, addr, result, arguments, info) 1323 , _tmp(tmp) {} 1324 1325 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 1326 virtual void emit_code(LIR_Assembler* masm); 1327 virtual LIR_OpRTCall* as_OpRTCall() { return this; } 1328 1329 LIR_Opr tmp() const { return _tmp; } 1330 1331 virtual void verify() const; 1332 }; 1333 1334 1335 class LIR_OpBranch: public LIR_Op { 1336 friend class LIR_OpVisitState; 1337 1338 private: 1339 LIR_Condition _cond; 1340 BasicType _type; 1341 Label* _label; 1342 BlockBegin* _block; // if this is a branch to a block, this is the block 1343 BlockBegin* _ublock; // if this is a float-branch, this is the unorderd block 1344 CodeStub* _stub; // if this is a branch to a stub, this is the stub 1345 1346 public: 1347 LIR_OpBranch(LIR_Condition cond, Label* lbl) 1348 : LIR_Op(lir_branch, LIR_OprFact::illegalOpr, (CodeEmitInfo*) NULL) 1349 , _cond(cond) 1350 , _label(lbl) 1351 , _block(NULL) 1352 , _ublock(NULL) 1353 , _stub(NULL) { } 1354 1355 LIR_OpBranch(LIR_Condition cond, BasicType type, BlockBegin* block); 1356 LIR_OpBranch(LIR_Condition cond, BasicType type, CodeStub* stub); 1357 1358 // for unordered comparisons 1359 LIR_OpBranch(LIR_Condition cond, BasicType type, BlockBegin* block, BlockBegin* ublock); 1360 1361 LIR_Condition cond() const { return _cond; } 1362 BasicType type() const { return _type; } 1363 Label* label() const { return _label; } 1364 BlockBegin* block() const { return _block; } 1365 BlockBegin* ublock() const { return _ublock; } 1366 CodeStub* stub() const { return _stub; } 1367 1368 void change_block(BlockBegin* b); 1369 void change_ublock(BlockBegin* b); 1370 void negate_cond(); 1371 1372 virtual void emit_code(LIR_Assembler* masm); 1373 virtual LIR_OpBranch* as_OpBranch() { return this; } 1374 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 1375 }; 1376 1377 1378 class ConversionStub; 1379 1380 class LIR_OpConvert: public LIR_Op1 { 1381 friend class LIR_OpVisitState; 1382 1383 private: 1384 Bytecodes::Code _bytecode; 1385 ConversionStub* _stub; 1386 #ifdef PPC 1387 LIR_Opr _tmp1; 1388 LIR_Opr _tmp2; 1389 #endif 1390 1391 public: 1392 LIR_OpConvert(Bytecodes::Code code, LIR_Opr opr, LIR_Opr result, ConversionStub* stub) 1393 : LIR_Op1(lir_convert, opr, result) 1394 , _stub(stub) 1395 #ifdef PPC 1396 , _tmp1(LIR_OprDesc::illegalOpr()) 1397 , _tmp2(LIR_OprDesc::illegalOpr()) 1398 #endif 1399 , _bytecode(code) {} 1400 1401 #ifdef PPC 1402 LIR_OpConvert(Bytecodes::Code code, LIR_Opr opr, LIR_Opr result, ConversionStub* stub 1403 ,LIR_Opr tmp1, LIR_Opr tmp2) 1404 : LIR_Op1(lir_convert, opr, result) 1405 , _stub(stub) 1406 , _tmp1(tmp1) 1407 , _tmp2(tmp2) 1408 , _bytecode(code) {} 1409 #endif 1410 1411 Bytecodes::Code bytecode() const { return _bytecode; } 1412 ConversionStub* stub() const { return _stub; } 1413 #ifdef PPC 1414 LIR_Opr tmp1() const { return _tmp1; } 1415 LIR_Opr tmp2() const { return _tmp2; } 1416 #endif 1417 1418 virtual void emit_code(LIR_Assembler* masm); 1419 virtual LIR_OpConvert* as_OpConvert() { return this; } 1420 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 1421 1422 static void print_bytecode(outputStream* out, Bytecodes::Code code) PRODUCT_RETURN; 1423 }; 1424 1425 1426 // LIR_OpAllocObj 1427 class LIR_OpAllocObj : public LIR_Op1 { 1428 friend class LIR_OpVisitState; 1429 1430 private: 1431 LIR_Opr _tmp1; 1432 LIR_Opr _tmp2; 1433 LIR_Opr _tmp3; 1434 LIR_Opr _tmp4; 1435 int _hdr_size; 1436 int _obj_size; 1437 CodeStub* _stub; 1438 bool _init_check; 1439 1440 public: 1441 LIR_OpAllocObj(LIR_Opr klass, LIR_Opr result, 1442 LIR_Opr t1, LIR_Opr t2, LIR_Opr t3, LIR_Opr t4, 1443 int hdr_size, int obj_size, bool init_check, CodeStub* stub) 1444 : LIR_Op1(lir_alloc_object, klass, result) 1445 , _tmp1(t1) 1446 , _tmp2(t2) 1447 , _tmp3(t3) 1448 , _tmp4(t4) 1449 , _hdr_size(hdr_size) 1450 , _obj_size(obj_size) 1451 , _init_check(init_check) 1452 , _stub(stub) { } 1453 1454 LIR_Opr klass() const { return in_opr(); } 1455 LIR_Opr obj() const { return result_opr(); } 1456 LIR_Opr tmp1() const { return _tmp1; } 1457 LIR_Opr tmp2() const { return _tmp2; } 1458 LIR_Opr tmp3() const { return _tmp3; } 1459 LIR_Opr tmp4() const { return _tmp4; } 1460 int header_size() const { return _hdr_size; } 1461 int object_size() const { return _obj_size; } 1462 bool init_check() const { return _init_check; } 1463 CodeStub* stub() const { return _stub; } 1464 1465 virtual void emit_code(LIR_Assembler* masm); 1466 virtual LIR_OpAllocObj * as_OpAllocObj () { return this; } 1467 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 1468 }; 1469 1470 1471 // LIR_OpRoundFP 1472 class LIR_OpRoundFP : public LIR_Op1 { 1473 friend class LIR_OpVisitState; 1474 1475 private: 1476 LIR_Opr _tmp; 1477 1478 public: 1479 LIR_OpRoundFP(LIR_Opr reg, LIR_Opr stack_loc_temp, LIR_Opr result) 1480 : LIR_Op1(lir_roundfp, reg, result) 1481 , _tmp(stack_loc_temp) {} 1482 1483 LIR_Opr tmp() const { return _tmp; } 1484 virtual LIR_OpRoundFP* as_OpRoundFP() { return this; } 1485 void print_instr(outputStream* out) const PRODUCT_RETURN; 1486 }; 1487 1488 // LIR_OpTypeCheck 1489 class LIR_OpTypeCheck: public LIR_Op { 1490 friend class LIR_OpVisitState; 1491 1492 private: 1493 LIR_Opr _object; 1494 LIR_Opr _array; 1495 ciKlass* _klass; 1496 LIR_Opr _tmp1; 1497 LIR_Opr _tmp2; 1498 LIR_Opr _tmp3; 1499 bool _fast_check; 1500 CodeEmitInfo* _info_for_patch; 1501 CodeEmitInfo* _info_for_exception; 1502 CodeStub* _stub; 1503 ciMethod* _profiled_method; 1504 int _profiled_bci; 1505 bool _should_profile; 1506 1507 public: 1508 LIR_OpTypeCheck(LIR_Code code, LIR_Opr result, LIR_Opr object, ciKlass* klass, 1509 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, bool fast_check, 1510 CodeEmitInfo* info_for_exception, CodeEmitInfo* info_for_patch, CodeStub* stub); 1511 LIR_OpTypeCheck(LIR_Code code, LIR_Opr object, LIR_Opr array, 1512 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, CodeEmitInfo* info_for_exception); 1513 1514 LIR_Opr object() const { return _object; } 1515 LIR_Opr array() const { assert(code() == lir_store_check, "not valid"); return _array; } 1516 LIR_Opr tmp1() const { return _tmp1; } 1517 LIR_Opr tmp2() const { return _tmp2; } 1518 LIR_Opr tmp3() const { return _tmp3; } 1519 ciKlass* klass() const { assert(code() == lir_instanceof || code() == lir_checkcast, "not valid"); return _klass; } 1520 bool fast_check() const { assert(code() == lir_instanceof || code() == lir_checkcast, "not valid"); return _fast_check; } 1521 CodeEmitInfo* info_for_patch() const { return _info_for_patch; } 1522 CodeEmitInfo* info_for_exception() const { return _info_for_exception; } 1523 CodeStub* stub() const { return _stub; } 1524 1525 // methodDataOop profiling 1526 void set_profiled_method(ciMethod *method) { _profiled_method = method; } 1527 void set_profiled_bci(int bci) { _profiled_bci = bci; } 1528 void set_should_profile(bool b) { _should_profile = b; } 1529 ciMethod* profiled_method() const { return _profiled_method; } 1530 int profiled_bci() const { return _profiled_bci; } 1531 bool should_profile() const { return _should_profile; } 1532 1533 virtual void emit_code(LIR_Assembler* masm); 1534 virtual LIR_OpTypeCheck* as_OpTypeCheck() { return this; } 1535 void print_instr(outputStream* out) const PRODUCT_RETURN; 1536 }; 1537 1538 // LIR_Op2 1539 class LIR_Op2: public LIR_Op { 1540 friend class LIR_OpVisitState; 1541 1542 int _fpu_stack_size; // for sin/cos implementation on Intel 1543 1544 protected: 1545 LIR_Opr _opr1; 1546 LIR_Opr _opr2; 1547 BasicType _type; 1548 LIR_Opr _tmp; 1549 LIR_Condition _condition; 1550 1551 void verify() const; 1552 1553 public: 1554 LIR_Op2(LIR_Code code, LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, CodeEmitInfo* info = NULL) 1555 : LIR_Op(code, LIR_OprFact::illegalOpr, info) 1556 , _opr1(opr1) 1557 , _opr2(opr2) 1558 , _type(T_ILLEGAL) 1559 , _condition(condition) 1560 , _fpu_stack_size(0) 1561 , _tmp(LIR_OprFact::illegalOpr) { 1562 assert(code == lir_cmp, "code check"); 1563 } 1564 1565 LIR_Op2(LIR_Code code, LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result) 1566 : LIR_Op(code, result, NULL) 1567 , _opr1(opr1) 1568 , _opr2(opr2) 1569 , _type(T_ILLEGAL) 1570 , _condition(condition) 1571 , _fpu_stack_size(0) 1572 , _tmp(LIR_OprFact::illegalOpr) { 1573 assert(code == lir_cmove, "code check"); 1574 } 1575 1576 LIR_Op2(LIR_Code code, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result = LIR_OprFact::illegalOpr, 1577 CodeEmitInfo* info = NULL, BasicType type = T_ILLEGAL) 1578 : LIR_Op(code, result, info) 1579 , _opr1(opr1) 1580 , _opr2(opr2) 1581 , _type(type) 1582 , _condition(lir_cond_unknown) 1583 , _fpu_stack_size(0) 1584 , _tmp(LIR_OprFact::illegalOpr) { 1585 assert(code != lir_cmp && is_in_range(code, begin_op2, end_op2), "code check"); 1586 } 1587 1588 LIR_Op2(LIR_Code code, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result, LIR_Opr tmp) 1589 : LIR_Op(code, result, NULL) 1590 , _opr1(opr1) 1591 , _opr2(opr2) 1592 , _type(T_ILLEGAL) 1593 , _condition(lir_cond_unknown) 1594 , _fpu_stack_size(0) 1595 , _tmp(tmp) { 1596 assert(code != lir_cmp && is_in_range(code, begin_op2, end_op2), "code check"); 1597 } 1598 1599 LIR_Opr in_opr1() const { return _opr1; } 1600 LIR_Opr in_opr2() const { return _opr2; } 1601 BasicType type() const { return _type; } 1602 LIR_Opr tmp_opr() const { return _tmp; } 1603 LIR_Condition condition() const { 1604 assert(code() == lir_cmp || code() == lir_cmove, "only valid for cmp and cmove"); return _condition; 1605 } 1606 void set_condition(LIR_Condition condition) { 1607 assert(code() == lir_cmp || code() == lir_cmove, "only valid for cmp and cmove"); _condition = condition; 1608 } 1609 1610 void set_fpu_stack_size(int size) { _fpu_stack_size = size; } 1611 int fpu_stack_size() const { return _fpu_stack_size; } 1612 1613 void set_in_opr1(LIR_Opr opr) { _opr1 = opr; } 1614 void set_in_opr2(LIR_Opr opr) { _opr2 = opr; } 1615 1616 virtual void emit_code(LIR_Assembler* masm); 1617 virtual LIR_Op2* as_Op2() { return this; } 1618 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 1619 }; 1620 1621 class LIR_OpAllocArray : public LIR_Op { 1622 friend class LIR_OpVisitState; 1623 1624 private: 1625 LIR_Opr _klass; 1626 LIR_Opr _len; 1627 LIR_Opr _tmp1; 1628 LIR_Opr _tmp2; 1629 LIR_Opr _tmp3; 1630 LIR_Opr _tmp4; 1631 BasicType _type; 1632 CodeStub* _stub; 1633 1634 public: 1635 LIR_OpAllocArray(LIR_Opr klass, LIR_Opr len, LIR_Opr result, LIR_Opr t1, LIR_Opr t2, LIR_Opr t3, LIR_Opr t4, BasicType type, CodeStub* stub) 1636 : LIR_Op(lir_alloc_array, result, NULL) 1637 , _klass(klass) 1638 , _len(len) 1639 , _tmp1(t1) 1640 , _tmp2(t2) 1641 , _tmp3(t3) 1642 , _tmp4(t4) 1643 , _type(type) 1644 , _stub(stub) {} 1645 1646 LIR_Opr klass() const { return _klass; } 1647 LIR_Opr len() const { return _len; } 1648 LIR_Opr obj() const { return result_opr(); } 1649 LIR_Opr tmp1() const { return _tmp1; } 1650 LIR_Opr tmp2() const { return _tmp2; } 1651 LIR_Opr tmp3() const { return _tmp3; } 1652 LIR_Opr tmp4() const { return _tmp4; } 1653 BasicType type() const { return _type; } 1654 CodeStub* stub() const { return _stub; } 1655 1656 virtual void emit_code(LIR_Assembler* masm); 1657 virtual LIR_OpAllocArray * as_OpAllocArray () { return this; } 1658 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 1659 }; 1660 1661 1662 class LIR_Op3: public LIR_Op { 1663 friend class LIR_OpVisitState; 1664 1665 private: 1666 LIR_Opr _opr1; 1667 LIR_Opr _opr2; 1668 LIR_Opr _opr3; 1669 public: 1670 LIR_Op3(LIR_Code code, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr opr3, LIR_Opr result, CodeEmitInfo* info = NULL) 1671 : LIR_Op(code, result, info) 1672 , _opr1(opr1) 1673 , _opr2(opr2) 1674 , _opr3(opr3) { assert(is_in_range(code, begin_op3, end_op3), "code check"); } 1675 LIR_Opr in_opr1() const { return _opr1; } 1676 LIR_Opr in_opr2() const { return _opr2; } 1677 LIR_Opr in_opr3() const { return _opr3; } 1678 1679 virtual void emit_code(LIR_Assembler* masm); 1680 virtual LIR_Op3* as_Op3() { return this; } 1681 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 1682 }; 1683 1684 1685 //-------------------------------- 1686 class LabelObj: public CompilationResourceObj { 1687 private: 1688 Label _label; 1689 public: 1690 LabelObj() {} 1691 Label* label() { return &_label; } 1692 }; 1693 1694 1695 class LIR_OpLock: public LIR_Op { 1696 friend class LIR_OpVisitState; 1697 1698 private: 1699 LIR_Opr _hdr; 1700 LIR_Opr _obj; 1701 LIR_Opr _lock; 1702 LIR_Opr _scratch; 1703 CodeStub* _stub; 1704 public: 1705 LIR_OpLock(LIR_Code code, LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub, CodeEmitInfo* info) 1706 : LIR_Op(code, LIR_OprFact::illegalOpr, info) 1707 , _hdr(hdr) 1708 , _obj(obj) 1709 , _lock(lock) 1710 , _scratch(scratch) 1711 , _stub(stub) {} 1712 1713 LIR_Opr hdr_opr() const { return _hdr; } 1714 LIR_Opr obj_opr() const { return _obj; } 1715 LIR_Opr lock_opr() const { return _lock; } 1716 LIR_Opr scratch_opr() const { return _scratch; } 1717 CodeStub* stub() const { return _stub; } 1718 1719 virtual void emit_code(LIR_Assembler* masm); 1720 virtual LIR_OpLock* as_OpLock() { return this; } 1721 void print_instr(outputStream* out) const PRODUCT_RETURN; 1722 }; 1723 1724 1725 class LIR_OpDelay: public LIR_Op { 1726 friend class LIR_OpVisitState; 1727 1728 private: 1729 LIR_Op* _op; 1730 1731 public: 1732 LIR_OpDelay(LIR_Op* op, CodeEmitInfo* info): 1733 LIR_Op(lir_delay_slot, LIR_OprFact::illegalOpr, info), 1734 _op(op) { 1735 assert(op->code() == lir_nop || LIRFillDelaySlots, "should be filling with nops"); 1736 } 1737 virtual void emit_code(LIR_Assembler* masm); 1738 virtual LIR_OpDelay* as_OpDelay() { return this; } 1739 void print_instr(outputStream* out) const PRODUCT_RETURN; 1740 LIR_Op* delay_op() const { return _op; } 1741 CodeEmitInfo* call_info() const { return info(); } 1742 }; 1743 1744 1745 // LIR_OpCompareAndSwap 1746 class LIR_OpCompareAndSwap : public LIR_Op { 1747 friend class LIR_OpVisitState; 1748 1749 private: 1750 LIR_Opr _addr; 1751 LIR_Opr _cmp_value; 1752 LIR_Opr _new_value; 1753 LIR_Opr _tmp1; 1754 LIR_Opr _tmp2; 1755 1756 public: 1757 LIR_OpCompareAndSwap(LIR_Code code, LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value, 1758 LIR_Opr t1, LIR_Opr t2, LIR_Opr result) 1759 : LIR_Op(code, result, NULL) // no result, no info 1760 , _addr(addr) 1761 , _cmp_value(cmp_value) 1762 , _new_value(new_value) 1763 , _tmp1(t1) 1764 , _tmp2(t2) { } 1765 1766 LIR_Opr addr() const { return _addr; } 1767 LIR_Opr cmp_value() const { return _cmp_value; } 1768 LIR_Opr new_value() const { return _new_value; } 1769 LIR_Opr tmp1() const { return _tmp1; } 1770 LIR_Opr tmp2() const { return _tmp2; } 1771 1772 virtual void emit_code(LIR_Assembler* masm); 1773 virtual LIR_OpCompareAndSwap * as_OpCompareAndSwap () { return this; } 1774 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 1775 }; 1776 1777 // LIR_OpProfileCall 1778 class LIR_OpProfileCall : public LIR_Op { 1779 friend class LIR_OpVisitState; 1780 1781 private: 1782 ciMethod* _profiled_method; 1783 int _profiled_bci; 1784 LIR_Opr _mdo; 1785 LIR_Opr _recv; 1786 LIR_Opr _tmp1; 1787 ciKlass* _known_holder; 1788 1789 public: 1790 // Destroys recv 1791 LIR_OpProfileCall(LIR_Code code, ciMethod* profiled_method, int profiled_bci, LIR_Opr mdo, LIR_Opr recv, LIR_Opr t1, ciKlass* known_holder) 1792 : LIR_Op(code, LIR_OprFact::illegalOpr, NULL) // no result, no info 1793 , _profiled_method(profiled_method) 1794 , _profiled_bci(profiled_bci) 1795 , _mdo(mdo) 1796 , _recv(recv) 1797 , _tmp1(t1) 1798 , _known_holder(known_holder) { } 1799 1800 ciMethod* profiled_method() const { return _profiled_method; } 1801 int profiled_bci() const { return _profiled_bci; } 1802 LIR_Opr mdo() const { return _mdo; } 1803 LIR_Opr recv() const { return _recv; } 1804 LIR_Opr tmp1() const { return _tmp1; } 1805 ciKlass* known_holder() const { return _known_holder; } 1806 1807 virtual void emit_code(LIR_Assembler* masm); 1808 virtual LIR_OpProfileCall* as_OpProfileCall() { return this; } 1809 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 1810 }; 1811 1812 class LIR_InsertionBuffer; 1813 1814 //--------------------------------LIR_List--------------------------------------------------- 1815 // Maintains a list of LIR instructions (one instance of LIR_List per basic block) 1816 // The LIR instructions are appended by the LIR_List class itself; 1817 // 1818 // Notes: 1819 // - all offsets are(should be) in bytes 1820 // - local positions are specified with an offset, with offset 0 being local 0 1821 1822 class LIR_List: public CompilationResourceObj { 1823 private: 1824 LIR_OpList _operations; 1825 1826 Compilation* _compilation; 1827 #ifndef PRODUCT 1828 BlockBegin* _block; 1829 #endif 1830 #ifdef ASSERT 1831 const char * _file; 1832 int _line; 1833 #endif 1834 1835 void append(LIR_Op* op) { 1836 if (op->source() == NULL) 1837 op->set_source(_compilation->current_instruction()); 1838 #ifndef PRODUCT 1839 if (PrintIRWithLIR) { 1840 _compilation->maybe_print_current_instruction(); 1841 op->print(); tty->cr(); 1842 } 1843 #endif // PRODUCT 1844 1845 _operations.append(op); 1846 1847 #ifdef ASSERT 1848 op->verify(); 1849 op->set_file_and_line(_file, _line); 1850 _file = NULL; 1851 _line = 0; 1852 #endif 1853 } 1854 1855 public: 1856 LIR_List(Compilation* compilation, BlockBegin* block = NULL); 1857 1858 #ifdef ASSERT 1859 void set_file_and_line(const char * file, int line); 1860 #endif 1861 1862 //---------- accessors --------------- 1863 LIR_OpList* instructions_list() { return &_operations; } 1864 int length() const { return _operations.length(); } 1865 LIR_Op* at(int i) const { return _operations.at(i); } 1866 1867 NOT_PRODUCT(BlockBegin* block() const { return _block; }); 1868 1869 // insert LIR_Ops in buffer to right places in LIR_List 1870 void append(LIR_InsertionBuffer* buffer); 1871 1872 //---------- mutators --------------- 1873 void insert_before(int i, LIR_List* op_list) { _operations.insert_before(i, op_list->instructions_list()); } 1874 void insert_before(int i, LIR_Op* op) { _operations.insert_before(i, op); } 1875 void remove_at(int i) { _operations.remove_at(i); } 1876 1877 //---------- printing ------------- 1878 void print_instructions() PRODUCT_RETURN; 1879 1880 1881 //---------- instructions ------------- 1882 void call_opt_virtual(ciMethod* method, LIR_Opr receiver, LIR_Opr result, 1883 address dest, LIR_OprList* arguments, 1884 CodeEmitInfo* info) { 1885 append(new LIR_OpJavaCall(lir_optvirtual_call, method, receiver, result, dest, arguments, info)); 1886 } 1887 void call_static(ciMethod* method, LIR_Opr result, 1888 address dest, LIR_OprList* arguments, CodeEmitInfo* info) { 1889 append(new LIR_OpJavaCall(lir_static_call, method, LIR_OprFact::illegalOpr, result, dest, arguments, info)); 1890 } 1891 void call_icvirtual(ciMethod* method, LIR_Opr receiver, LIR_Opr result, 1892 address dest, LIR_OprList* arguments, CodeEmitInfo* info) { 1893 append(new LIR_OpJavaCall(lir_icvirtual_call, method, receiver, result, dest, arguments, info)); 1894 } 1895 void call_virtual(ciMethod* method, LIR_Opr receiver, LIR_Opr result, 1896 intptr_t vtable_offset, LIR_OprList* arguments, CodeEmitInfo* info) { 1897 append(new LIR_OpJavaCall(lir_virtual_call, method, receiver, result, vtable_offset, arguments, info)); 1898 } 1899 void call_dynamic(ciMethod* method, LIR_Opr receiver, LIR_Opr result, 1900 address dest, LIR_OprList* arguments, CodeEmitInfo* info) { 1901 append(new LIR_OpJavaCall(lir_dynamic_call, method, receiver, result, dest, arguments, info)); 1902 } 1903 1904 void get_thread(LIR_Opr result) { append(new LIR_Op0(lir_get_thread, result)); } 1905 void word_align() { append(new LIR_Op0(lir_word_align)); } 1906 void membar() { append(new LIR_Op0(lir_membar)); } 1907 void membar_acquire() { append(new LIR_Op0(lir_membar_acquire)); } 1908 void membar_release() { append(new LIR_Op0(lir_membar_release)); } 1909 1910 void nop() { append(new LIR_Op0(lir_nop)); } 1911 void build_frame() { append(new LIR_Op0(lir_build_frame)); } 1912 1913 void std_entry(LIR_Opr receiver) { append(new LIR_Op0(lir_std_entry, receiver)); } 1914 void osr_entry(LIR_Opr osrPointer) { append(new LIR_Op0(lir_osr_entry, osrPointer)); } 1915 1916 void branch_destination(Label* lbl) { append(new LIR_OpLabel(lbl)); } 1917 1918 void negate(LIR_Opr from, LIR_Opr to) { append(new LIR_Op1(lir_neg, from, to)); } 1919 void leal(LIR_Opr from, LIR_Opr result_reg) { append(new LIR_Op1(lir_leal, from, result_reg)); } 1920 1921 // result is a stack location for old backend and vreg for UseLinearScan 1922 // stack_loc_temp is an illegal register for old backend 1923 void roundfp(LIR_Opr reg, LIR_Opr stack_loc_temp, LIR_Opr result) { append(new LIR_OpRoundFP(reg, stack_loc_temp, result)); } 1924 void unaligned_move(LIR_Address* src, LIR_Opr dst) { append(new LIR_Op1(lir_move, LIR_OprFact::address(src), dst, dst->type(), lir_patch_none, NULL, lir_move_unaligned)); } 1925 void unaligned_move(LIR_Opr src, LIR_Address* dst) { append(new LIR_Op1(lir_move, src, LIR_OprFact::address(dst), src->type(), lir_patch_none, NULL, lir_move_unaligned)); } 1926 void unaligned_move(LIR_Opr src, LIR_Opr dst) { append(new LIR_Op1(lir_move, src, dst, dst->type(), lir_patch_none, NULL, lir_move_unaligned)); } 1927 void move(LIR_Opr src, LIR_Opr dst, CodeEmitInfo* info = NULL) { append(new LIR_Op1(lir_move, src, dst, dst->type(), lir_patch_none, info)); } 1928 void move(LIR_Address* src, LIR_Opr dst, CodeEmitInfo* info = NULL) { append(new LIR_Op1(lir_move, LIR_OprFact::address(src), dst, src->type(), lir_patch_none, info)); } 1929 void move(LIR_Opr src, LIR_Address* dst, CodeEmitInfo* info = NULL) { append(new LIR_Op1(lir_move, src, LIR_OprFact::address(dst), dst->type(), lir_patch_none, info)); } 1930 1931 void volatile_move(LIR_Opr src, LIR_Opr dst, BasicType type, CodeEmitInfo* info = NULL, LIR_PatchCode patch_code = lir_patch_none) { append(new LIR_Op1(lir_move, src, dst, type, patch_code, info, lir_move_volatile)); } 1932 1933 void oop2reg (jobject o, LIR_Opr reg) { append(new LIR_Op1(lir_move, LIR_OprFact::oopConst(o), reg)); } 1934 void oop2reg_patch(jobject o, LIR_Opr reg, CodeEmitInfo* info); 1935 1936 void return_op(LIR_Opr result) { append(new LIR_Op1(lir_return, result)); } 1937 1938 void safepoint(LIR_Opr tmp, CodeEmitInfo* info) { append(new LIR_Op1(lir_safepoint, tmp, info)); } 1939 1940 #ifdef PPC 1941 void convert(Bytecodes::Code code, LIR_Opr left, LIR_Opr dst, LIR_Opr tmp1, LIR_Opr tmp2) { append(new LIR_OpConvert(code, left, dst, NULL, tmp1, tmp2)); } 1942 #endif 1943 void convert(Bytecodes::Code code, LIR_Opr left, LIR_Opr dst, ConversionStub* stub = NULL/*, bool is_32bit = false*/) { append(new LIR_OpConvert(code, left, dst, stub)); } 1944 1945 void logical_and (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_logic_and, left, right, dst)); } 1946 void logical_or (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_logic_or, left, right, dst)); } 1947 void logical_xor (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_logic_xor, left, right, dst)); } 1948 1949 void pack64(LIR_Opr src, LIR_Opr dst) { append(new LIR_Op1(lir_pack64, src, dst, T_LONG, lir_patch_none, NULL)); } 1950 void unpack64(LIR_Opr src, LIR_Opr dst) { append(new LIR_Op1(lir_unpack64, src, dst, T_LONG, lir_patch_none, NULL)); } 1951 1952 void null_check(LIR_Opr opr, CodeEmitInfo* info) { append(new LIR_Op1(lir_null_check, opr, info)); } 1953 void throw_exception(LIR_Opr exceptionPC, LIR_Opr exceptionOop, CodeEmitInfo* info) { 1954 append(new LIR_Op2(lir_throw, exceptionPC, exceptionOop, LIR_OprFact::illegalOpr, info)); 1955 } 1956 void unwind_exception(LIR_Opr exceptionOop) { 1957 append(new LIR_Op1(lir_unwind, exceptionOop)); 1958 } 1959 1960 void compare_to (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { 1961 append(new LIR_Op2(lir_compare_to, left, right, dst)); 1962 } 1963 1964 void push(LIR_Opr opr) { append(new LIR_Op1(lir_push, opr)); } 1965 void pop(LIR_Opr reg) { append(new LIR_Op1(lir_pop, reg)); } 1966 1967 void cmp(LIR_Condition condition, LIR_Opr left, LIR_Opr right, CodeEmitInfo* info = NULL) { 1968 append(new LIR_Op2(lir_cmp, condition, left, right, info)); 1969 } 1970 void cmp(LIR_Condition condition, LIR_Opr left, int right, CodeEmitInfo* info = NULL) { 1971 cmp(condition, left, LIR_OprFact::intConst(right), info); 1972 } 1973 1974 void cmp_mem_int(LIR_Condition condition, LIR_Opr base, int disp, int c, CodeEmitInfo* info); 1975 void cmp_reg_mem(LIR_Condition condition, LIR_Opr reg, LIR_Address* addr, CodeEmitInfo* info); 1976 1977 void cmove(LIR_Condition condition, LIR_Opr src1, LIR_Opr src2, LIR_Opr dst) { 1978 append(new LIR_Op2(lir_cmove, condition, src1, src2, dst)); 1979 } 1980 1981 void cas_long(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value, 1982 LIR_Opr t1, LIR_Opr t2, LIR_Opr result = LIR_OprFact::illegalOpr); 1983 void cas_obj(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value, 1984 LIR_Opr t1, LIR_Opr t2, LIR_Opr result = LIR_OprFact::illegalOpr); 1985 void cas_int(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value, 1986 LIR_Opr t1, LIR_Opr t2, LIR_Opr result = LIR_OprFact::illegalOpr); 1987 1988 void abs (LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op2(lir_abs , from, tmp, to)); } 1989 void sqrt(LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op2(lir_sqrt, from, tmp, to)); } 1990 void log (LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op2(lir_log, from, LIR_OprFact::illegalOpr, to, tmp)); } 1991 void log10 (LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op2(lir_log10, from, LIR_OprFact::illegalOpr, to, tmp)); } 1992 void sin (LIR_Opr from, LIR_Opr to, LIR_Opr tmp1, LIR_Opr tmp2) { append(new LIR_Op2(lir_sin , from, tmp1, to, tmp2)); } 1993 void cos (LIR_Opr from, LIR_Opr to, LIR_Opr tmp1, LIR_Opr tmp2) { append(new LIR_Op2(lir_cos , from, tmp1, to, tmp2)); } 1994 void tan (LIR_Opr from, LIR_Opr to, LIR_Opr tmp1, LIR_Opr tmp2) { append(new LIR_Op2(lir_tan , from, tmp1, to, tmp2)); } 1995 1996 void add (LIR_Opr left, LIR_Opr right, LIR_Opr res) { append(new LIR_Op2(lir_add, left, right, res)); } 1997 void sub (LIR_Opr left, LIR_Opr right, LIR_Opr res, CodeEmitInfo* info = NULL) { append(new LIR_Op2(lir_sub, left, right, res, info)); } 1998 void mul (LIR_Opr left, LIR_Opr right, LIR_Opr res) { append(new LIR_Op2(lir_mul, left, right, res)); } 1999 void mul_strictfp (LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_mul_strictfp, left, right, res, tmp)); } 2000 void div (LIR_Opr left, LIR_Opr right, LIR_Opr res, CodeEmitInfo* info = NULL) { append(new LIR_Op2(lir_div, left, right, res, info)); } 2001 void div_strictfp (LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_div_strictfp, left, right, res, tmp)); } 2002 void rem (LIR_Opr left, LIR_Opr right, LIR_Opr res, CodeEmitInfo* info = NULL) { append(new LIR_Op2(lir_rem, left, right, res, info)); } 2003 2004 void volatile_load_mem_reg(LIR_Address* address, LIR_Opr dst, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none); 2005 void volatile_load_unsafe_reg(LIR_Opr base, LIR_Opr offset, LIR_Opr dst, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code); 2006 2007 void load(LIR_Address* addr, LIR_Opr src, CodeEmitInfo* info = NULL, LIR_PatchCode patch_code = lir_patch_none); 2008 2009 void prefetch(LIR_Address* addr, bool is_store); 2010 2011 void store_mem_int(jint v, LIR_Opr base, int offset_in_bytes, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none); 2012 void store_mem_oop(jobject o, LIR_Opr base, int offset_in_bytes, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none); 2013 void store(LIR_Opr src, LIR_Address* addr, CodeEmitInfo* info = NULL, LIR_PatchCode patch_code = lir_patch_none); 2014 void volatile_store_mem_reg(LIR_Opr src, LIR_Address* address, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none); 2015 void volatile_store_unsafe_reg(LIR_Opr src, LIR_Opr base, LIR_Opr offset, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code); 2016 2017 void idiv(LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info); 2018 void idiv(LIR_Opr left, int right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info); 2019 void irem(LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info); 2020 void irem(LIR_Opr left, int right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info); 2021 2022 void allocate_object(LIR_Opr dst, LIR_Opr t1, LIR_Opr t2, LIR_Opr t3, LIR_Opr t4, int header_size, int object_size, LIR_Opr klass, bool init_check, CodeStub* stub); 2023 void allocate_array(LIR_Opr dst, LIR_Opr len, LIR_Opr t1,LIR_Opr t2, LIR_Opr t3,LIR_Opr t4, BasicType type, LIR_Opr klass, CodeStub* stub); 2024 2025 // jump is an unconditional branch 2026 void jump(BlockBegin* block) { 2027 append(new LIR_OpBranch(lir_cond_always, T_ILLEGAL, block)); 2028 } 2029 void jump(CodeStub* stub) { 2030 append(new LIR_OpBranch(lir_cond_always, T_ILLEGAL, stub)); 2031 } 2032 void branch(LIR_Condition cond, Label* lbl) { append(new LIR_OpBranch(cond, lbl)); } 2033 void branch(LIR_Condition cond, BasicType type, BlockBegin* block) { 2034 assert(type != T_FLOAT && type != T_DOUBLE, "no fp comparisons"); 2035 append(new LIR_OpBranch(cond, type, block)); 2036 } 2037 void branch(LIR_Condition cond, BasicType type, CodeStub* stub) { 2038 assert(type != T_FLOAT && type != T_DOUBLE, "no fp comparisons"); 2039 append(new LIR_OpBranch(cond, type, stub)); 2040 } 2041 void branch(LIR_Condition cond, BasicType type, BlockBegin* block, BlockBegin* unordered) { 2042 assert(type == T_FLOAT || type == T_DOUBLE, "fp comparisons only"); 2043 append(new LIR_OpBranch(cond, type, block, unordered)); 2044 } 2045 2046 void shift_left(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp); 2047 void shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp); 2048 void unsigned_shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp); 2049 2050 void shift_left(LIR_Opr value, int count, LIR_Opr dst) { shift_left(value, LIR_OprFact::intConst(count), dst, LIR_OprFact::illegalOpr); } 2051 void shift_right(LIR_Opr value, int count, LIR_Opr dst) { shift_right(value, LIR_OprFact::intConst(count), dst, LIR_OprFact::illegalOpr); } 2052 void unsigned_shift_right(LIR_Opr value, int count, LIR_Opr dst) { unsigned_shift_right(value, LIR_OprFact::intConst(count), dst, LIR_OprFact::illegalOpr); } 2053 2054 void lcmp2int(LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_cmp_l2i, left, right, dst)); } 2055 void fcmp2int(LIR_Opr left, LIR_Opr right, LIR_Opr dst, bool is_unordered_less); 2056 2057 void call_runtime_leaf(address routine, LIR_Opr tmp, LIR_Opr result, LIR_OprList* arguments) { 2058 append(new LIR_OpRTCall(routine, tmp, result, arguments)); 2059 } 2060 2061 void call_runtime(address routine, LIR_Opr tmp, LIR_Opr result, 2062 LIR_OprList* arguments, CodeEmitInfo* info) { 2063 append(new LIR_OpRTCall(routine, tmp, result, arguments, info)); 2064 } 2065 2066 void load_stack_address_monitor(int monitor_ix, LIR_Opr dst) { append(new LIR_Op1(lir_monaddr, LIR_OprFact::intConst(monitor_ix), dst)); } 2067 void unlock_object(LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub); 2068 void lock_object(LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub, CodeEmitInfo* info); 2069 2070 void set_24bit_fpu() { append(new LIR_Op0(lir_24bit_FPU )); } 2071 void restore_fpu() { append(new LIR_Op0(lir_reset_FPU )); } 2072 void breakpoint() { append(new LIR_Op0(lir_breakpoint)); } 2073 2074 void arraycopy(LIR_Opr src, LIR_Opr src_pos, LIR_Opr dst, LIR_Opr dst_pos, LIR_Opr length, LIR_Opr tmp, ciArrayKlass* expected_type, int flags, CodeEmitInfo* info) { append(new LIR_OpArrayCopy(src, src_pos, dst, dst_pos, length, tmp, expected_type, flags, info)); } 2075 2076 void fpop_raw() { append(new LIR_Op0(lir_fpop_raw)); } 2077 2078 void instanceof(LIR_Opr result, LIR_Opr object, ciKlass* klass, LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, bool fast_check, CodeEmitInfo* info_for_patch, ciMethod* profiled_method, int profiled_bci); 2079 void store_check(LIR_Opr object, LIR_Opr array, LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, CodeEmitInfo* info_for_exception); 2080 2081 void checkcast (LIR_Opr result, LIR_Opr object, ciKlass* klass, 2082 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, bool fast_check, 2083 CodeEmitInfo* info_for_exception, CodeEmitInfo* info_for_patch, CodeStub* stub, 2084 ciMethod* profiled_method, int profiled_bci); 2085 // methodDataOop profiling 2086 void profile_call(ciMethod* method, int bci, LIR_Opr mdo, LIR_Opr recv, LIR_Opr t1, ciKlass* cha_klass) { 2087 append(new LIR_OpProfileCall(lir_profile_call, method, bci, mdo, recv, t1, cha_klass)); 2088 } 2089 }; 2090 2091 void print_LIR(BlockList* blocks); 2092 2093 class LIR_InsertionBuffer : public CompilationResourceObj { 2094 private: 2095 LIR_List* _lir; // the lir list where ops of this buffer should be inserted later (NULL when uninitialized) 2096 2097 // list of insertion points. index and count are stored alternately: 2098 // _index_and_count[i * 2]: the index into lir list where "count" ops should be inserted 2099 // _index_and_count[i * 2 + 1]: the number of ops to be inserted at index 2100 intStack _index_and_count; 2101 2102 // the LIR_Ops to be inserted 2103 LIR_OpList _ops; 2104 2105 void append_new(int index, int count) { _index_and_count.append(index); _index_and_count.append(count); } 2106 void set_index_at(int i, int value) { _index_and_count.at_put((i << 1), value); } 2107 void set_count_at(int i, int value) { _index_and_count.at_put((i << 1) + 1, value); } 2108 2109 #ifdef ASSERT 2110 void verify(); 2111 #endif 2112 public: 2113 LIR_InsertionBuffer() : _lir(NULL), _index_and_count(8), _ops(8) { } 2114 2115 // must be called before using the insertion buffer 2116 void init(LIR_List* lir) { assert(!initialized(), "already initialized"); _lir = lir; _index_and_count.clear(); _ops.clear(); } 2117 bool initialized() const { return _lir != NULL; } 2118 // called automatically when the buffer is appended to the LIR_List 2119 void finish() { _lir = NULL; } 2120 2121 // accessors 2122 LIR_List* lir_list() const { return _lir; } 2123 int number_of_insertion_points() const { return _index_and_count.length() >> 1; } 2124 int index_at(int i) const { return _index_and_count.at((i << 1)); } 2125 int count_at(int i) const { return _index_and_count.at((i << 1) + 1); } 2126 2127 int number_of_ops() const { return _ops.length(); } 2128 LIR_Op* op_at(int i) const { return _ops.at(i); } 2129 2130 // append an instruction to the buffer 2131 void append(int index, LIR_Op* op); 2132 2133 // instruction 2134 void move(int index, LIR_Opr src, LIR_Opr dst, CodeEmitInfo* info = NULL) { append(index, new LIR_Op1(lir_move, src, dst, dst->type(), lir_patch_none, info)); } 2135 }; 2136 2137 2138 // 2139 // LIR_OpVisitState is used for manipulating LIR_Ops in an abstract way. 2140 // Calling a LIR_Op's visit function with a LIR_OpVisitState causes 2141 // information about the input, output and temporaries used by the 2142 // op to be recorded. It also records whether the op has call semantics 2143 // and also records all the CodeEmitInfos used by this op. 2144 // 2145 2146 2147 class LIR_OpVisitState: public StackObj { 2148 public: 2149 typedef enum { inputMode, firstMode = inputMode, tempMode, outputMode, numModes, invalidMode = -1 } OprMode; 2150 2151 enum { 2152 maxNumberOfOperands = 16, 2153 maxNumberOfInfos = 4 2154 }; 2155 2156 private: 2157 LIR_Op* _op; 2158 2159 // optimization: the operands and infos are not stored in a variable-length 2160 // list, but in a fixed-size array to save time of size checks and resizing 2161 int _oprs_len[numModes]; 2162 LIR_Opr* _oprs_new[numModes][maxNumberOfOperands]; 2163 int _info_len; 2164 CodeEmitInfo* _info_new[maxNumberOfInfos]; 2165 2166 bool _has_call; 2167 bool _has_slow_case; 2168 2169 2170 // only include register operands 2171 // addresses are decomposed to the base and index registers 2172 // constants and stack operands are ignored 2173 void append(LIR_Opr& opr, OprMode mode) { 2174 assert(opr->is_valid(), "should not call this otherwise"); 2175 assert(mode >= 0 && mode < numModes, "bad mode"); 2176 2177 if (opr->is_register()) { 2178 assert(_oprs_len[mode] < maxNumberOfOperands, "array overflow"); 2179 _oprs_new[mode][_oprs_len[mode]++] = &opr; 2180 2181 } else if (opr->is_pointer()) { 2182 LIR_Address* address = opr->as_address_ptr(); 2183 if (address != NULL) { 2184 // special handling for addresses: add base and index register of the address 2185 // both are always input operands! 2186 if (address->_base->is_valid()) { 2187 assert(address->_base->is_register(), "must be"); 2188 assert(_oprs_len[inputMode] < maxNumberOfOperands, "array overflow"); 2189 _oprs_new[inputMode][_oprs_len[inputMode]++] = &address->_base; 2190 } 2191 if (address->_index->is_valid()) { 2192 assert(address->_index->is_register(), "must be"); 2193 assert(_oprs_len[inputMode] < maxNumberOfOperands, "array overflow"); 2194 _oprs_new[inputMode][_oprs_len[inputMode]++] = &address->_index; 2195 } 2196 2197 } else { 2198 assert(opr->is_constant(), "constant operands are not processed"); 2199 } 2200 } else { 2201 assert(opr->is_stack(), "stack operands are not processed"); 2202 } 2203 } 2204 2205 void append(CodeEmitInfo* info) { 2206 assert(info != NULL, "should not call this otherwise"); 2207 assert(_info_len < maxNumberOfInfos, "array overflow"); 2208 _info_new[_info_len++] = info; 2209 } 2210 2211 public: 2212 LIR_OpVisitState() { reset(); } 2213 2214 LIR_Op* op() const { return _op; } 2215 void set_op(LIR_Op* op) { reset(); _op = op; } 2216 2217 bool has_call() const { return _has_call; } 2218 bool has_slow_case() const { return _has_slow_case; } 2219 2220 void reset() { 2221 _op = NULL; 2222 _has_call = false; 2223 _has_slow_case = false; 2224 2225 _oprs_len[inputMode] = 0; 2226 _oprs_len[tempMode] = 0; 2227 _oprs_len[outputMode] = 0; 2228 _info_len = 0; 2229 } 2230 2231 2232 int opr_count(OprMode mode) const { 2233 assert(mode >= 0 && mode < numModes, "bad mode"); 2234 return _oprs_len[mode]; 2235 } 2236 2237 LIR_Opr opr_at(OprMode mode, int index) const { 2238 assert(mode >= 0 && mode < numModes, "bad mode"); 2239 assert(index >= 0 && index < _oprs_len[mode], "index out of bound"); 2240 return *_oprs_new[mode][index]; 2241 } 2242 2243 void set_opr_at(OprMode mode, int index, LIR_Opr opr) const { 2244 assert(mode >= 0 && mode < numModes, "bad mode"); 2245 assert(index >= 0 && index < _oprs_len[mode], "index out of bound"); 2246 *_oprs_new[mode][index] = opr; 2247 } 2248 2249 int info_count() const { 2250 return _info_len; 2251 } 2252 2253 CodeEmitInfo* info_at(int index) const { 2254 assert(index < _info_len, "index out of bounds"); 2255 return _info_new[index]; 2256 } 2257 2258 XHandlers* all_xhandler(); 2259 2260 // collects all register operands of the instruction 2261 void visit(LIR_Op* op); 2262 2263 #if ASSERT 2264 // check that an operation has no operands 2265 bool no_operands(LIR_Op* op); 2266 #endif 2267 2268 // LIR_Op visitor functions use these to fill in the state 2269 void do_input(LIR_Opr& opr) { append(opr, LIR_OpVisitState::inputMode); } 2270 void do_output(LIR_Opr& opr) { append(opr, LIR_OpVisitState::outputMode); } 2271 void do_temp(LIR_Opr& opr) { append(opr, LIR_OpVisitState::tempMode); } 2272 void do_info(CodeEmitInfo* info) { append(info); } 2273 2274 void do_stub(CodeStub* stub); 2275 void do_call() { _has_call = true; } 2276 void do_slow_case() { _has_slow_case = true; } 2277 void do_slow_case(CodeEmitInfo* info) { 2278 _has_slow_case = true; 2279 append(info); 2280 } 2281 }; 2282 2283 2284 inline LIR_Opr LIR_OprDesc::illegalOpr() { return LIR_OprFact::illegalOpr; };