1 /* 2 * Copyright (c) 2005, 2011, 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 #include "precompiled.hpp" 26 #include "c1/c1_Compilation.hpp" 27 #include "c1/c1_FrameMap.hpp" 28 #include "c1/c1_Instruction.hpp" 29 #include "c1/c1_LIRAssembler.hpp" 30 #include "c1/c1_LIRGenerator.hpp" 31 #include "c1/c1_Runtime1.hpp" 32 #include "c1/c1_ValueStack.hpp" 33 #include "ci/ciArray.hpp" 34 #include "ci/ciObjArrayKlass.hpp" 35 #include "ci/ciTypeArrayKlass.hpp" 36 #include "runtime/sharedRuntime.hpp" 37 #include "runtime/stubRoutines.hpp" 38 #include "vmreg_sparc.inline.hpp" 39 40 #ifdef ASSERT 41 #define __ gen()->lir(__FILE__, __LINE__)-> 42 #else 43 #define __ gen()->lir()-> 44 #endif 45 46 void LIRItem::load_byte_item() { 47 // byte loads use same registers as other loads 48 load_item(); 49 } 50 51 52 void LIRItem::load_nonconstant() { 53 LIR_Opr r = value()->operand(); 54 if (_gen->can_inline_as_constant(value())) { 55 if (!r->is_constant()) { 56 r = LIR_OprFact::value_type(value()->type()); 57 } 58 _result = r; 59 } else { 60 load_item(); 61 } 62 } 63 64 65 //-------------------------------------------------------------- 66 // LIRGenerator 67 //-------------------------------------------------------------- 68 69 LIR_Opr LIRGenerator::exceptionOopOpr() { return FrameMap::Oexception_opr; } 70 LIR_Opr LIRGenerator::exceptionPcOpr() { return FrameMap::Oissuing_pc_opr; } 71 LIR_Opr LIRGenerator::syncTempOpr() { return new_register(T_OBJECT); } 72 LIR_Opr LIRGenerator::getThreadTemp() { return rlock_callee_saved(T_INT); } 73 74 LIR_Opr LIRGenerator::result_register_for(ValueType* type, bool callee) { 75 LIR_Opr opr; 76 switch (type->tag()) { 77 case intTag: opr = callee ? FrameMap::I0_opr : FrameMap::O0_opr; break; 78 case objectTag: opr = callee ? FrameMap::I0_oop_opr : FrameMap::O0_oop_opr; break; 79 case longTag: opr = callee ? FrameMap::in_long_opr : FrameMap::out_long_opr; break; 80 case floatTag: opr = FrameMap::F0_opr; break; 81 case doubleTag: opr = FrameMap::F0_double_opr; break; 82 83 case addressTag: 84 default: ShouldNotReachHere(); return LIR_OprFact::illegalOpr; 85 } 86 87 assert(opr->type_field() == as_OprType(as_BasicType(type)), "type mismatch"); 88 return opr; 89 } 90 91 LIR_Opr LIRGenerator::rlock_callee_saved(BasicType type) { 92 LIR_Opr reg = new_register(type); 93 set_vreg_flag(reg, callee_saved); 94 return reg; 95 } 96 97 98 LIR_Opr LIRGenerator::rlock_byte(BasicType type) { 99 return new_register(T_INT); 100 } 101 102 103 104 105 106 //--------- loading items into registers -------------------------------- 107 108 // SPARC cannot inline all constants 109 bool LIRGenerator::can_store_as_constant(Value v, BasicType type) const { 110 if (v->type()->as_IntConstant() != NULL) { 111 return v->type()->as_IntConstant()->value() == 0; 112 } else if (v->type()->as_LongConstant() != NULL) { 113 return v->type()->as_LongConstant()->value() == 0L; 114 } else if (v->type()->as_ObjectConstant() != NULL) { 115 return v->type()->as_ObjectConstant()->value()->is_null_object(); 116 } else { 117 return false; 118 } 119 } 120 121 122 // only simm13 constants can be inlined 123 bool LIRGenerator:: can_inline_as_constant(Value i) const { 124 if (i->type()->as_IntConstant() != NULL) { 125 return Assembler::is_simm13(i->type()->as_IntConstant()->value()); 126 } else { 127 return can_store_as_constant(i, as_BasicType(i->type())); 128 } 129 } 130 131 132 bool LIRGenerator:: can_inline_as_constant(LIR_Const* c) const { 133 if (c->type() == T_INT) { 134 return Assembler::is_simm13(c->as_jint()); 135 } 136 return false; 137 } 138 139 140 LIR_Opr LIRGenerator::safepoint_poll_register() { 141 return new_register(T_INT); 142 } 143 144 145 146 LIR_Address* LIRGenerator::generate_address(LIR_Opr base, LIR_Opr index, 147 int shift, int disp, BasicType type) { 148 assert(base->is_register(), "must be"); 149 150 // accumulate fixed displacements 151 if (index->is_constant()) { 152 disp += index->as_constant_ptr()->as_jint() << shift; 153 index = LIR_OprFact::illegalOpr; 154 } 155 156 if (index->is_register()) { 157 // apply the shift and accumulate the displacement 158 if (shift > 0) { 159 LIR_Opr tmp = new_pointer_register(); 160 __ shift_left(index, shift, tmp); 161 index = tmp; 162 } 163 if (disp != 0) { 164 LIR_Opr tmp = new_pointer_register(); 165 if (Assembler::is_simm13(disp)) { 166 __ add(tmp, LIR_OprFact::intptrConst(disp), tmp); 167 index = tmp; 168 } else { 169 __ move(LIR_OprFact::intptrConst(disp), tmp); 170 __ add(tmp, index, tmp); 171 index = tmp; 172 } 173 disp = 0; 174 } 175 } else if (disp != 0 && !Assembler::is_simm13(disp)) { 176 // index is illegal so replace it with the displacement loaded into a register 177 index = new_pointer_register(); 178 __ move(LIR_OprFact::intptrConst(disp), index); 179 disp = 0; 180 } 181 182 // at this point we either have base + index or base + displacement 183 if (disp == 0) { 184 return new LIR_Address(base, index, type); 185 } else { 186 assert(Assembler::is_simm13(disp), "must be"); 187 return new LIR_Address(base, disp, type); 188 } 189 } 190 191 192 LIR_Address* LIRGenerator::emit_array_address(LIR_Opr array_opr, LIR_Opr index_opr, 193 BasicType type, bool needs_card_mark) { 194 int elem_size = type2aelembytes(type); 195 int shift = exact_log2(elem_size); 196 197 LIR_Opr base_opr; 198 int offset = arrayOopDesc::base_offset_in_bytes(type); 199 200 if (index_opr->is_constant()) { 201 int i = index_opr->as_constant_ptr()->as_jint(); 202 int array_offset = i * elem_size; 203 if (Assembler::is_simm13(array_offset + offset)) { 204 base_opr = array_opr; 205 offset = array_offset + offset; 206 } else { 207 base_opr = new_pointer_register(); 208 if (Assembler::is_simm13(array_offset)) { 209 __ add(array_opr, LIR_OprFact::intptrConst(array_offset), base_opr); 210 } else { 211 __ move(LIR_OprFact::intptrConst(array_offset), base_opr); 212 __ add(base_opr, array_opr, base_opr); 213 } 214 } 215 } else { 216 #ifdef _LP64 217 if (index_opr->type() == T_INT) { 218 LIR_Opr tmp = new_register(T_LONG); 219 __ convert(Bytecodes::_i2l, index_opr, tmp); 220 index_opr = tmp; 221 } 222 #endif 223 224 base_opr = new_pointer_register(); 225 assert (index_opr->is_register(), "Must be register"); 226 if (shift > 0) { 227 __ shift_left(index_opr, shift, base_opr); 228 __ add(base_opr, array_opr, base_opr); 229 } else { 230 __ add(index_opr, array_opr, base_opr); 231 } 232 } 233 if (needs_card_mark) { 234 LIR_Opr ptr = new_pointer_register(); 235 __ add(base_opr, LIR_OprFact::intptrConst(offset), ptr); 236 return new LIR_Address(ptr, type); 237 } else { 238 return new LIR_Address(base_opr, offset, type); 239 } 240 } 241 242 LIR_Opr LIRGenerator::load_immediate(int x, BasicType type) { 243 LIR_Opr r; 244 if (type == T_LONG) { 245 r = LIR_OprFact::longConst(x); 246 } else if (type == T_INT) { 247 r = LIR_OprFact::intConst(x); 248 } else { 249 ShouldNotReachHere(); 250 } 251 if (!Assembler::is_simm13(x)) { 252 LIR_Opr tmp = new_register(type); 253 __ move(r, tmp); 254 return tmp; 255 } 256 return r; 257 } 258 259 void LIRGenerator::increment_counter(address counter, BasicType type, int step) { 260 LIR_Opr pointer = new_pointer_register(); 261 __ move(LIR_OprFact::intptrConst(counter), pointer); 262 LIR_Address* addr = new LIR_Address(pointer, type); 263 increment_counter(addr, step); 264 } 265 266 void LIRGenerator::increment_counter(LIR_Address* addr, int step) { 267 LIR_Opr temp = new_register(addr->type()); 268 __ move(addr, temp); 269 __ add(temp, load_immediate(step, addr->type()), temp); 270 __ move(temp, addr); 271 } 272 273 void LIRGenerator::cmp_mem_int(LIR_Condition condition, LIR_Opr base, int disp, int c, CodeEmitInfo* info) { 274 LIR_Opr o7opr = FrameMap::O7_opr; 275 __ load(new LIR_Address(base, disp, T_INT), o7opr, info); 276 __ cmp(condition, o7opr, c); 277 } 278 279 280 void LIRGenerator::cmp_reg_mem(LIR_Condition condition, LIR_Opr reg, LIR_Opr base, int disp, BasicType type, CodeEmitInfo* info) { 281 LIR_Opr o7opr = FrameMap::O7_opr; 282 __ load(new LIR_Address(base, disp, type), o7opr, info); 283 __ cmp(condition, reg, o7opr); 284 } 285 286 287 void LIRGenerator::cmp_reg_mem(LIR_Condition condition, LIR_Opr reg, LIR_Opr base, LIR_Opr disp, BasicType type, CodeEmitInfo* info) { 288 LIR_Opr o7opr = FrameMap::O7_opr; 289 __ load(new LIR_Address(base, disp, type), o7opr, info); 290 __ cmp(condition, reg, o7opr); 291 } 292 293 294 bool LIRGenerator::strength_reduce_multiply(LIR_Opr left, int c, LIR_Opr result, LIR_Opr tmp) { 295 assert(left != result, "should be different registers"); 296 if (is_power_of_2(c + 1)) { 297 __ shift_left(left, log2_intptr(c + 1), result); 298 __ sub(result, left, result); 299 return true; 300 } else if (is_power_of_2(c - 1)) { 301 __ shift_left(left, log2_intptr(c - 1), result); 302 __ add(result, left, result); 303 return true; 304 } 305 return false; 306 } 307 308 309 void LIRGenerator::store_stack_parameter (LIR_Opr item, ByteSize offset_from_sp) { 310 BasicType t = item->type(); 311 LIR_Opr sp_opr = FrameMap::SP_opr; 312 if ((t == T_LONG || t == T_DOUBLE) && 313 ((in_bytes(offset_from_sp) - STACK_BIAS) % 8 != 0)) { 314 __ unaligned_move(item, new LIR_Address(sp_opr, in_bytes(offset_from_sp), t)); 315 } else { 316 __ move(item, new LIR_Address(sp_opr, in_bytes(offset_from_sp), t)); 317 } 318 } 319 320 //---------------------------------------------------------------------- 321 // visitor functions 322 //---------------------------------------------------------------------- 323 324 325 void LIRGenerator::do_StoreIndexed(StoreIndexed* x) { 326 assert(x->is_pinned(),""); 327 bool needs_range_check = true; 328 bool use_length = x->length() != NULL; 329 bool obj_store = x->elt_type() == T_ARRAY || x->elt_type() == T_OBJECT; 330 bool needs_store_check = obj_store && (x->value()->as_Constant() == NULL || 331 !get_jobject_constant(x->value())->is_null_object() || 332 x->should_profile()); 333 334 LIRItem array(x->array(), this); 335 LIRItem index(x->index(), this); 336 LIRItem value(x->value(), this); 337 LIRItem length(this); 338 339 array.load_item(); 340 index.load_nonconstant(); 341 342 if (use_length) { 343 needs_range_check = x->compute_needs_range_check(); 344 if (needs_range_check) { 345 length.set_instruction(x->length()); 346 length.load_item(); 347 } 348 } 349 if (needs_store_check) { 350 value.load_item(); 351 } else { 352 value.load_for_store(x->elt_type()); 353 } 354 355 set_no_result(x); 356 357 // the CodeEmitInfo must be duplicated for each different 358 // LIR-instruction because spilling can occur anywhere between two 359 // instructions and so the debug information must be different 360 CodeEmitInfo* range_check_info = state_for(x); 361 CodeEmitInfo* null_check_info = NULL; 362 if (x->needs_null_check()) { 363 null_check_info = new CodeEmitInfo(range_check_info); 364 } 365 366 // emit array address setup early so it schedules better 367 LIR_Address* array_addr = emit_array_address(array.result(), index.result(), x->elt_type(), obj_store); 368 369 if (GenerateRangeChecks && needs_range_check) { 370 if (use_length) { 371 __ cmp(lir_cond_belowEqual, length.result(), index.result()); 372 __ branch(lir_cond_belowEqual, T_INT, new RangeCheckStub(range_check_info, index.result())); 373 } else { 374 array_range_check(array.result(), index.result(), null_check_info, range_check_info); 375 // range_check also does the null check 376 null_check_info = NULL; 377 } 378 } 379 380 if (GenerateArrayStoreCheck && needs_store_check) { 381 LIR_Opr tmp1 = FrameMap::G1_opr; 382 LIR_Opr tmp2 = FrameMap::G3_opr; 383 LIR_Opr tmp3 = FrameMap::G5_opr; 384 385 CodeEmitInfo* store_check_info = new CodeEmitInfo(range_check_info); 386 __ store_check(value.result(), array.result(), tmp1, tmp2, tmp3, store_check_info, x->profiled_method(), x->profiled_bci()); 387 } 388 389 if (obj_store) { 390 // Needs GC write barriers. 391 pre_barrier(LIR_OprFact::address(array_addr), LIR_OprFact::illegalOpr /* pre_val */, 392 true /* do_load */, false /* patch */, NULL); 393 } 394 __ move(value.result(), array_addr, null_check_info); 395 if (obj_store) { 396 // Precise card mark 397 post_barrier(LIR_OprFact::address(array_addr), value.result()); 398 } 399 } 400 401 402 void LIRGenerator::do_MonitorEnter(MonitorEnter* x) { 403 assert(x->is_pinned(),""); 404 LIRItem obj(x->obj(), this); 405 obj.load_item(); 406 407 set_no_result(x); 408 409 LIR_Opr lock = FrameMap::G1_opr; 410 LIR_Opr scratch = FrameMap::G3_opr; 411 LIR_Opr hdr = FrameMap::G4_opr; 412 413 CodeEmitInfo* info_for_exception = NULL; 414 if (x->needs_null_check()) { 415 info_for_exception = state_for(x); 416 } 417 418 // this CodeEmitInfo must not have the xhandlers because here the 419 // object is already locked (xhandlers expects object to be unlocked) 420 CodeEmitInfo* info = state_for(x, x->state(), true); 421 monitor_enter(obj.result(), lock, hdr, scratch, x->monitor_no(), info_for_exception, info); 422 } 423 424 425 void LIRGenerator::do_MonitorExit(MonitorExit* x) { 426 assert(x->is_pinned(),""); 427 LIRItem obj(x->obj(), this); 428 obj.dont_load_item(); 429 430 set_no_result(x); 431 LIR_Opr lock = FrameMap::G1_opr; 432 LIR_Opr hdr = FrameMap::G3_opr; 433 LIR_Opr obj_temp = FrameMap::G4_opr; 434 monitor_exit(obj_temp, lock, hdr, LIR_OprFact::illegalOpr, x->monitor_no()); 435 } 436 437 438 // _ineg, _lneg, _fneg, _dneg 439 void LIRGenerator::do_NegateOp(NegateOp* x) { 440 LIRItem value(x->x(), this); 441 value.load_item(); 442 LIR_Opr reg = rlock_result(x); 443 __ negate(value.result(), reg); 444 } 445 446 447 448 // for _fadd, _fmul, _fsub, _fdiv, _frem 449 // _dadd, _dmul, _dsub, _ddiv, _drem 450 void LIRGenerator::do_ArithmeticOp_FPU(ArithmeticOp* x) { 451 switch (x->op()) { 452 case Bytecodes::_fadd: 453 case Bytecodes::_fmul: 454 case Bytecodes::_fsub: 455 case Bytecodes::_fdiv: 456 case Bytecodes::_dadd: 457 case Bytecodes::_dmul: 458 case Bytecodes::_dsub: 459 case Bytecodes::_ddiv: { 460 LIRItem left(x->x(), this); 461 LIRItem right(x->y(), this); 462 left.load_item(); 463 right.load_item(); 464 rlock_result(x); 465 arithmetic_op_fpu(x->op(), x->operand(), left.result(), right.result(), x->is_strictfp()); 466 } 467 break; 468 469 case Bytecodes::_frem: 470 case Bytecodes::_drem: { 471 address entry; 472 switch (x->op()) { 473 case Bytecodes::_frem: 474 entry = CAST_FROM_FN_PTR(address, SharedRuntime::frem); 475 break; 476 case Bytecodes::_drem: 477 entry = CAST_FROM_FN_PTR(address, SharedRuntime::drem); 478 break; 479 default: 480 ShouldNotReachHere(); 481 } 482 LIR_Opr result = call_runtime(x->x(), x->y(), entry, x->type(), NULL); 483 set_result(x, result); 484 } 485 break; 486 487 default: ShouldNotReachHere(); 488 } 489 } 490 491 492 // for _ladd, _lmul, _lsub, _ldiv, _lrem 493 void LIRGenerator::do_ArithmeticOp_Long(ArithmeticOp* x) { 494 switch (x->op()) { 495 case Bytecodes::_lrem: 496 case Bytecodes::_lmul: 497 case Bytecodes::_ldiv: { 498 499 if (x->op() == Bytecodes::_ldiv || x->op() == Bytecodes::_lrem) { 500 LIRItem right(x->y(), this); 501 right.load_item(); 502 503 CodeEmitInfo* info = state_for(x); 504 LIR_Opr item = right.result(); 505 assert(item->is_register(), "must be"); 506 __ cmp(lir_cond_equal, item, LIR_OprFact::longConst(0)); 507 __ branch(lir_cond_equal, T_LONG, new DivByZeroStub(info)); 508 } 509 510 address entry; 511 switch (x->op()) { 512 case Bytecodes::_lrem: 513 entry = CAST_FROM_FN_PTR(address, SharedRuntime::lrem); 514 break; // check if dividend is 0 is done elsewhere 515 case Bytecodes::_ldiv: 516 entry = CAST_FROM_FN_PTR(address, SharedRuntime::ldiv); 517 break; // check if dividend is 0 is done elsewhere 518 case Bytecodes::_lmul: 519 entry = CAST_FROM_FN_PTR(address, SharedRuntime::lmul); 520 break; 521 default: 522 ShouldNotReachHere(); 523 } 524 525 // order of arguments to runtime call is reversed. 526 LIR_Opr result = call_runtime(x->y(), x->x(), entry, x->type(), NULL); 527 set_result(x, result); 528 break; 529 } 530 case Bytecodes::_ladd: 531 case Bytecodes::_lsub: { 532 LIRItem left(x->x(), this); 533 LIRItem right(x->y(), this); 534 left.load_item(); 535 right.load_item(); 536 rlock_result(x); 537 538 arithmetic_op_long(x->op(), x->operand(), left.result(), right.result(), NULL); 539 break; 540 } 541 default: ShouldNotReachHere(); 542 } 543 } 544 545 546 // Returns if item is an int constant that can be represented by a simm13 547 static bool is_simm13(LIR_Opr item) { 548 if (item->is_constant() && item->type() == T_INT) { 549 return Assembler::is_simm13(item->as_constant_ptr()->as_jint()); 550 } else { 551 return false; 552 } 553 } 554 555 556 // for: _iadd, _imul, _isub, _idiv, _irem 557 void LIRGenerator::do_ArithmeticOp_Int(ArithmeticOp* x) { 558 bool is_div_rem = x->op() == Bytecodes::_idiv || x->op() == Bytecodes::_irem; 559 LIRItem left(x->x(), this); 560 LIRItem right(x->y(), this); 561 // missing test if instr is commutative and if we should swap 562 right.load_nonconstant(); 563 assert(right.is_constant() || right.is_register(), "wrong state of right"); 564 left.load_item(); 565 rlock_result(x); 566 if (is_div_rem) { 567 CodeEmitInfo* info = state_for(x); 568 LIR_Opr tmp = FrameMap::G1_opr; 569 if (x->op() == Bytecodes::_irem) { 570 __ irem(left.result(), right.result(), x->operand(), tmp, info); 571 } else if (x->op() == Bytecodes::_idiv) { 572 __ idiv(left.result(), right.result(), x->operand(), tmp, info); 573 } 574 } else { 575 arithmetic_op_int(x->op(), x->operand(), left.result(), right.result(), FrameMap::G1_opr); 576 } 577 } 578 579 580 void LIRGenerator::do_ArithmeticOp(ArithmeticOp* x) { 581 ValueTag tag = x->type()->tag(); 582 assert(x->x()->type()->tag() == tag && x->y()->type()->tag() == tag, "wrong parameters"); 583 switch (tag) { 584 case floatTag: 585 case doubleTag: do_ArithmeticOp_FPU(x); return; 586 case longTag: do_ArithmeticOp_Long(x); return; 587 case intTag: do_ArithmeticOp_Int(x); return; 588 } 589 ShouldNotReachHere(); 590 } 591 592 593 // _ishl, _lshl, _ishr, _lshr, _iushr, _lushr 594 void LIRGenerator::do_ShiftOp(ShiftOp* x) { 595 LIRItem value(x->x(), this); 596 LIRItem count(x->y(), this); 597 // Long shift destroys count register 598 if (value.type()->is_long()) { 599 count.set_destroys_register(); 600 } 601 value.load_item(); 602 // the old backend doesn't support this 603 if (count.is_constant() && count.type()->as_IntConstant() != NULL && value.type()->is_int()) { 604 jint c = count.get_jint_constant() & 0x1f; 605 assert(c >= 0 && c < 32, "should be small"); 606 count.dont_load_item(); 607 } else { 608 count.load_item(); 609 } 610 LIR_Opr reg = rlock_result(x); 611 shift_op(x->op(), reg, value.result(), count.result(), LIR_OprFact::illegalOpr); 612 } 613 614 615 // _iand, _land, _ior, _lor, _ixor, _lxor 616 void LIRGenerator::do_LogicOp(LogicOp* x) { 617 LIRItem left(x->x(), this); 618 LIRItem right(x->y(), this); 619 620 left.load_item(); 621 right.load_nonconstant(); 622 LIR_Opr reg = rlock_result(x); 623 624 logic_op(x->op(), reg, left.result(), right.result()); 625 } 626 627 628 629 // _lcmp, _fcmpl, _fcmpg, _dcmpl, _dcmpg 630 void LIRGenerator::do_CompareOp(CompareOp* x) { 631 LIRItem left(x->x(), this); 632 LIRItem right(x->y(), this); 633 left.load_item(); 634 right.load_item(); 635 LIR_Opr reg = rlock_result(x); 636 if (x->x()->type()->is_float_kind()) { 637 Bytecodes::Code code = x->op(); 638 __ fcmp2int(left.result(), right.result(), reg, (code == Bytecodes::_fcmpl || code == Bytecodes::_dcmpl)); 639 } else if (x->x()->type()->tag() == longTag) { 640 __ lcmp2int(left.result(), right.result(), reg); 641 } else { 642 Unimplemented(); 643 } 644 } 645 646 647 void LIRGenerator::do_AttemptUpdate(Intrinsic* x) { 648 assert(x->number_of_arguments() == 3, "wrong type"); 649 LIRItem obj (x->argument_at(0), this); // AtomicLong object 650 LIRItem cmp_value (x->argument_at(1), this); // value to compare with field 651 LIRItem new_value (x->argument_at(2), this); // replace field with new_value if it matches cmp_value 652 653 obj.load_item(); 654 cmp_value.load_item(); 655 new_value.load_item(); 656 657 // generate compare-and-swap and produce zero condition if swap occurs 658 int value_offset = sun_misc_AtomicLongCSImpl::value_offset(); 659 LIR_Opr addr = FrameMap::O7_opr; 660 __ add(obj.result(), LIR_OprFact::intConst(value_offset), addr); 661 LIR_Opr t1 = FrameMap::G1_opr; // temp for 64-bit value 662 LIR_Opr t2 = FrameMap::G3_opr; // temp for 64-bit value 663 __ cas_long(addr, cmp_value.result(), new_value.result(), t1, t2); 664 665 // generate conditional move of boolean result 666 LIR_Opr result = rlock_result(x); 667 __ cmove(lir_cond_equal, LIR_OprFact::intConst(1), LIR_OprFact::intConst(0), result, T_LONG); 668 } 669 670 671 void LIRGenerator::do_CompareAndSwap(Intrinsic* x, ValueType* type) { 672 assert(x->number_of_arguments() == 4, "wrong type"); 673 LIRItem obj (x->argument_at(0), this); // object 674 LIRItem offset(x->argument_at(1), this); // offset of field 675 LIRItem cmp (x->argument_at(2), this); // value to compare with field 676 LIRItem val (x->argument_at(3), this); // replace field with val if matches cmp 677 678 // Use temps to avoid kills 679 LIR_Opr t1 = FrameMap::G1_opr; 680 LIR_Opr t2 = FrameMap::G3_opr; 681 LIR_Opr addr = new_pointer_register(); 682 683 // get address of field 684 obj.load_item(); 685 offset.load_item(); 686 cmp.load_item(); 687 val.load_item(); 688 689 __ add(obj.result(), offset.result(), addr); 690 691 if (type == objectType) { // Write-barrier needed for Object fields. 692 pre_barrier(addr, LIR_OprFact::illegalOpr /* pre_val */, 693 true /* do_load */, false /* patch */, NULL); 694 } 695 696 if (type == objectType) 697 __ cas_obj(addr, cmp.result(), val.result(), t1, t2); 698 else if (type == intType) 699 __ cas_int(addr, cmp.result(), val.result(), t1, t2); 700 else if (type == longType) 701 __ cas_long(addr, cmp.result(), val.result(), t1, t2); 702 else { 703 ShouldNotReachHere(); 704 } 705 // generate conditional move of boolean result 706 LIR_Opr result = rlock_result(x); 707 __ cmove(lir_cond_equal, LIR_OprFact::intConst(1), LIR_OprFact::intConst(0), 708 result, as_BasicType(type)); 709 if (type == objectType) { // Write-barrier needed for Object fields. 710 // Precise card mark since could either be object or array 711 post_barrier(addr, val.result()); 712 } 713 } 714 715 716 void LIRGenerator::do_MathIntrinsic(Intrinsic* x) { 717 switch (x->id()) { 718 case vmIntrinsics::_dabs: 719 case vmIntrinsics::_dsqrt: { 720 assert(x->number_of_arguments() == 1, "wrong type"); 721 LIRItem value(x->argument_at(0), this); 722 value.load_item(); 723 LIR_Opr dst = rlock_result(x); 724 725 switch (x->id()) { 726 case vmIntrinsics::_dsqrt: { 727 __ sqrt(value.result(), dst, LIR_OprFact::illegalOpr); 728 break; 729 } 730 case vmIntrinsics::_dabs: { 731 __ abs(value.result(), dst, LIR_OprFact::illegalOpr); 732 break; 733 } 734 } 735 break; 736 } 737 case vmIntrinsics::_dlog10: // fall through 738 case vmIntrinsics::_dlog: // fall through 739 case vmIntrinsics::_dsin: // fall through 740 case vmIntrinsics::_dtan: // fall through 741 case vmIntrinsics::_dcos: // fall through 742 case vmIntrinsics::_dexp: { 743 assert(x->number_of_arguments() == 1, "wrong type"); 744 745 address runtime_entry = NULL; 746 switch (x->id()) { 747 case vmIntrinsics::_dsin: 748 runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dsin); 749 break; 750 case vmIntrinsics::_dcos: 751 runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dcos); 752 break; 753 case vmIntrinsics::_dtan: 754 runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dtan); 755 break; 756 case vmIntrinsics::_dlog: 757 runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dlog); 758 break; 759 case vmIntrinsics::_dlog10: 760 runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dlog10); 761 break; 762 case vmIntrinsics::_dexp: 763 runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dexp); 764 break; 765 default: 766 ShouldNotReachHere(); 767 } 768 769 LIR_Opr result = call_runtime(x->argument_at(0), runtime_entry, x->type(), NULL); 770 set_result(x, result); 771 break; 772 } 773 case vmIntrinsics::_dpow: { 774 assert(x->number_of_arguments() == 2, "wrong type"); 775 address runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dpow); 776 LIR_Opr result = call_runtime(x->argument_at(0), x->argument_at(1), runtime_entry, x->type(), NULL); 777 set_result(x, result); 778 break; 779 } 780 } 781 } 782 783 784 void LIRGenerator::do_ArrayCopy(Intrinsic* x) { 785 assert(x->number_of_arguments() == 5, "wrong type"); 786 787 // Make all state_for calls early since they can emit code 788 CodeEmitInfo* info = state_for(x, x->state()); 789 790 // Note: spill caller save before setting the item 791 LIRItem src (x->argument_at(0), this); 792 LIRItem src_pos (x->argument_at(1), this); 793 LIRItem dst (x->argument_at(2), this); 794 LIRItem dst_pos (x->argument_at(3), this); 795 LIRItem length (x->argument_at(4), this); 796 // load all values in callee_save_registers, as this makes the 797 // parameter passing to the fast case simpler 798 src.load_item_force (rlock_callee_saved(T_OBJECT)); 799 src_pos.load_item_force (rlock_callee_saved(T_INT)); 800 dst.load_item_force (rlock_callee_saved(T_OBJECT)); 801 dst_pos.load_item_force (rlock_callee_saved(T_INT)); 802 length.load_item_force (rlock_callee_saved(T_INT)); 803 804 int flags; 805 ciArrayKlass* expected_type; 806 arraycopy_helper(x, &flags, &expected_type); 807 808 __ arraycopy(src.result(), src_pos.result(), dst.result(), dst_pos.result(), 809 length.result(), rlock_callee_saved(T_INT), 810 expected_type, flags, info); 811 set_no_result(x); 812 } 813 814 // _i2l, _i2f, _i2d, _l2i, _l2f, _l2d, _f2i, _f2l, _f2d, _d2i, _d2l, _d2f 815 // _i2b, _i2c, _i2s 816 void LIRGenerator::do_Convert(Convert* x) { 817 818 switch (x->op()) { 819 case Bytecodes::_f2l: 820 case Bytecodes::_d2l: 821 case Bytecodes::_d2i: 822 case Bytecodes::_l2f: 823 case Bytecodes::_l2d: { 824 825 address entry; 826 switch (x->op()) { 827 case Bytecodes::_l2f: 828 entry = CAST_FROM_FN_PTR(address, SharedRuntime::l2f); 829 break; 830 case Bytecodes::_l2d: 831 entry = CAST_FROM_FN_PTR(address, SharedRuntime::l2d); 832 break; 833 case Bytecodes::_f2l: 834 entry = CAST_FROM_FN_PTR(address, SharedRuntime::f2l); 835 break; 836 case Bytecodes::_d2l: 837 entry = CAST_FROM_FN_PTR(address, SharedRuntime::d2l); 838 break; 839 case Bytecodes::_d2i: 840 entry = CAST_FROM_FN_PTR(address, SharedRuntime::d2i); 841 break; 842 default: 843 ShouldNotReachHere(); 844 } 845 LIR_Opr result = call_runtime(x->value(), entry, x->type(), NULL); 846 set_result(x, result); 847 break; 848 } 849 850 case Bytecodes::_i2f: 851 case Bytecodes::_i2d: { 852 LIRItem value(x->value(), this); 853 854 LIR_Opr reg = rlock_result(x); 855 // To convert an int to double, we need to load the 32-bit int 856 // from memory into a single precision floating point register 857 // (even numbered). Then the sparc fitod instruction takes care 858 // of the conversion. This is a bit ugly, but is the best way to 859 // get the int value in a single precision floating point register 860 value.load_item(); 861 LIR_Opr tmp = force_to_spill(value.result(), T_FLOAT); 862 __ convert(x->op(), tmp, reg); 863 break; 864 } 865 break; 866 867 case Bytecodes::_i2l: 868 case Bytecodes::_i2b: 869 case Bytecodes::_i2c: 870 case Bytecodes::_i2s: 871 case Bytecodes::_l2i: 872 case Bytecodes::_f2d: 873 case Bytecodes::_d2f: { // inline code 874 LIRItem value(x->value(), this); 875 876 value.load_item(); 877 LIR_Opr reg = rlock_result(x); 878 __ convert(x->op(), value.result(), reg, false); 879 } 880 break; 881 882 case Bytecodes::_f2i: { 883 LIRItem value (x->value(), this); 884 value.set_destroys_register(); 885 value.load_item(); 886 LIR_Opr reg = rlock_result(x); 887 set_vreg_flag(reg, must_start_in_memory); 888 __ convert(x->op(), value.result(), reg, false); 889 } 890 break; 891 892 default: ShouldNotReachHere(); 893 } 894 } 895 896 897 void LIRGenerator::do_NewInstance(NewInstance* x) { 898 // This instruction can be deoptimized in the slow path : use 899 // O0 as result register. 900 const LIR_Opr reg = result_register_for(x->type()); 901 #ifndef PRODUCT 902 if (PrintNotLoaded && !x->klass()->is_loaded()) { 903 tty->print_cr(" ###class not loaded at new bci %d", x->printable_bci()); 904 } 905 #endif 906 CodeEmitInfo* info = state_for(x, x->state()); 907 LIR_Opr tmp1 = FrameMap::G1_oop_opr; 908 LIR_Opr tmp2 = FrameMap::G3_oop_opr; 909 LIR_Opr tmp3 = FrameMap::G4_oop_opr; 910 LIR_Opr tmp4 = FrameMap::O1_oop_opr; 911 LIR_Opr klass_reg = FrameMap::G5_oop_opr; 912 new_instance(reg, x->klass(), tmp1, tmp2, tmp3, tmp4, klass_reg, info); 913 LIR_Opr result = rlock_result(x); 914 __ move(reg, result); 915 } 916 917 918 void LIRGenerator::do_NewTypeArray(NewTypeArray* x) { 919 // Evaluate state_for early since it may emit code 920 CodeEmitInfo* info = state_for(x, x->state()); 921 922 LIRItem length(x->length(), this); 923 length.load_item(); 924 925 LIR_Opr reg = result_register_for(x->type()); 926 LIR_Opr tmp1 = FrameMap::G1_oop_opr; 927 LIR_Opr tmp2 = FrameMap::G3_oop_opr; 928 LIR_Opr tmp3 = FrameMap::G4_oop_opr; 929 LIR_Opr tmp4 = FrameMap::O1_oop_opr; 930 LIR_Opr klass_reg = FrameMap::G5_oop_opr; 931 LIR_Opr len = length.result(); 932 BasicType elem_type = x->elt_type(); 933 934 __ oop2reg(ciTypeArrayKlass::make(elem_type)->constant_encoding(), klass_reg); 935 936 CodeStub* slow_path = new NewTypeArrayStub(klass_reg, len, reg, info); 937 __ allocate_array(reg, len, tmp1, tmp2, tmp3, tmp4, elem_type, klass_reg, slow_path); 938 939 LIR_Opr result = rlock_result(x); 940 __ move(reg, result); 941 } 942 943 944 void LIRGenerator::do_NewObjectArray(NewObjectArray* x) { 945 // Evaluate state_for early since it may emit code. 946 CodeEmitInfo* info = state_for(x, x->state()); 947 // in case of patching (i.e., object class is not yet loaded), we need to reexecute the instruction 948 // and therefore provide the state before the parameters have been consumed 949 CodeEmitInfo* patching_info = NULL; 950 if (!x->klass()->is_loaded() || PatchALot) { 951 patching_info = state_for(x, x->state_before()); 952 } 953 954 LIRItem length(x->length(), this); 955 length.load_item(); 956 957 const LIR_Opr reg = result_register_for(x->type()); 958 LIR_Opr tmp1 = FrameMap::G1_oop_opr; 959 LIR_Opr tmp2 = FrameMap::G3_oop_opr; 960 LIR_Opr tmp3 = FrameMap::G4_oop_opr; 961 LIR_Opr tmp4 = FrameMap::O1_oop_opr; 962 LIR_Opr klass_reg = FrameMap::G5_oop_opr; 963 LIR_Opr len = length.result(); 964 965 CodeStub* slow_path = new NewObjectArrayStub(klass_reg, len, reg, info); 966 ciObject* obj = (ciObject*) ciObjArrayKlass::make(x->klass()); 967 if (obj == ciEnv::unloaded_ciobjarrayklass()) { 968 BAILOUT("encountered unloaded_ciobjarrayklass due to out of memory error"); 969 } 970 jobject2reg_with_patching(klass_reg, obj, patching_info); 971 __ allocate_array(reg, len, tmp1, tmp2, tmp3, tmp4, T_OBJECT, klass_reg, slow_path); 972 973 LIR_Opr result = rlock_result(x); 974 __ move(reg, result); 975 } 976 977 978 void LIRGenerator::do_NewMultiArray(NewMultiArray* x) { 979 Values* dims = x->dims(); 980 int i = dims->length(); 981 LIRItemList* items = new LIRItemList(dims->length(), NULL); 982 while (i-- > 0) { 983 LIRItem* size = new LIRItem(dims->at(i), this); 984 items->at_put(i, size); 985 } 986 987 // Evaluate state_for early since it may emit code. 988 CodeEmitInfo* patching_info = NULL; 989 if (!x->klass()->is_loaded() || PatchALot) { 990 patching_info = state_for(x, x->state_before()); 991 992 // cannot re-use same xhandlers for multiple CodeEmitInfos, so 993 // clone all handlers. This is handled transparently in other 994 // places by the CodeEmitInfo cloning logic but is handled 995 // specially here because a stub isn't being used. 996 x->set_exception_handlers(new XHandlers(x->exception_handlers())); 997 } 998 CodeEmitInfo* info = state_for(x, x->state()); 999 1000 i = dims->length(); 1001 while (i-- > 0) { 1002 LIRItem* size = items->at(i); 1003 size->load_item(); 1004 store_stack_parameter (size->result(), 1005 in_ByteSize(STACK_BIAS + 1006 frame::memory_parameter_word_sp_offset * wordSize + 1007 i * sizeof(jint))); 1008 } 1009 1010 // This instruction can be deoptimized in the slow path : use 1011 // O0 as result register. 1012 const LIR_Opr reg = result_register_for(x->type()); 1013 jobject2reg_with_patching(reg, x->klass(), patching_info); 1014 LIR_Opr rank = FrameMap::O1_opr; 1015 __ move(LIR_OprFact::intConst(x->rank()), rank); 1016 LIR_Opr varargs = FrameMap::as_pointer_opr(O2); 1017 int offset_from_sp = (frame::memory_parameter_word_sp_offset * wordSize) + STACK_BIAS; 1018 __ add(FrameMap::SP_opr, 1019 LIR_OprFact::intptrConst(offset_from_sp), 1020 varargs); 1021 LIR_OprList* args = new LIR_OprList(3); 1022 args->append(reg); 1023 args->append(rank); 1024 args->append(varargs); 1025 __ call_runtime(Runtime1::entry_for(Runtime1::new_multi_array_id), 1026 LIR_OprFact::illegalOpr, 1027 reg, args, info); 1028 1029 LIR_Opr result = rlock_result(x); 1030 __ move(reg, result); 1031 } 1032 1033 1034 void LIRGenerator::do_BlockBegin(BlockBegin* x) { 1035 } 1036 1037 1038 void LIRGenerator::do_CheckCast(CheckCast* x) { 1039 LIRItem obj(x->obj(), this); 1040 CodeEmitInfo* patching_info = NULL; 1041 if (!x->klass()->is_loaded() || (PatchALot && !x->is_incompatible_class_change_check())) { 1042 // must do this before locking the destination register as an oop register, 1043 // and before the obj is loaded (so x->obj()->item() is valid for creating a debug info location) 1044 patching_info = state_for(x, x->state_before()); 1045 } 1046 obj.load_item(); 1047 LIR_Opr out_reg = rlock_result(x); 1048 CodeStub* stub; 1049 CodeEmitInfo* info_for_exception = state_for(x); 1050 1051 if (x->is_incompatible_class_change_check()) { 1052 assert(patching_info == NULL, "can't patch this"); 1053 stub = new SimpleExceptionStub(Runtime1::throw_incompatible_class_change_error_id, LIR_OprFact::illegalOpr, info_for_exception); 1054 } else { 1055 stub = new SimpleExceptionStub(Runtime1::throw_class_cast_exception_id, obj.result(), info_for_exception); 1056 } 1057 LIR_Opr tmp1 = FrameMap::G1_oop_opr; 1058 LIR_Opr tmp2 = FrameMap::G3_oop_opr; 1059 LIR_Opr tmp3 = FrameMap::G4_oop_opr; 1060 __ checkcast(out_reg, obj.result(), x->klass(), tmp1, tmp2, tmp3, 1061 x->direct_compare(), info_for_exception, patching_info, stub, 1062 x->profiled_method(), x->profiled_bci()); 1063 } 1064 1065 1066 void LIRGenerator::do_InstanceOf(InstanceOf* x) { 1067 LIRItem obj(x->obj(), this); 1068 CodeEmitInfo* patching_info = NULL; 1069 if (!x->klass()->is_loaded() || PatchALot) { 1070 patching_info = state_for(x, x->state_before()); 1071 } 1072 // ensure the result register is not the input register because the result is initialized before the patching safepoint 1073 obj.load_item(); 1074 LIR_Opr out_reg = rlock_result(x); 1075 LIR_Opr tmp1 = FrameMap::G1_oop_opr; 1076 LIR_Opr tmp2 = FrameMap::G3_oop_opr; 1077 LIR_Opr tmp3 = FrameMap::G4_oop_opr; 1078 __ instanceof(out_reg, obj.result(), x->klass(), tmp1, tmp2, tmp3, 1079 x->direct_compare(), patching_info, 1080 x->profiled_method(), x->profiled_bci()); 1081 } 1082 1083 1084 void LIRGenerator::do_If(If* x) { 1085 assert(x->number_of_sux() == 2, "inconsistency"); 1086 ValueTag tag = x->x()->type()->tag(); 1087 LIRItem xitem(x->x(), this); 1088 LIRItem yitem(x->y(), this); 1089 LIRItem* xin = &xitem; 1090 LIRItem* yin = &yitem; 1091 If::Condition cond = x->cond(); 1092 1093 if (tag == longTag) { 1094 // for longs, only conditions "eql", "neq", "lss", "geq" are valid; 1095 // mirror for other conditions 1096 if (cond == If::gtr || cond == If::leq) { 1097 // swap inputs 1098 cond = Instruction::mirror(cond); 1099 xin = &yitem; 1100 yin = &xitem; 1101 } 1102 xin->set_destroys_register(); 1103 } 1104 1105 LIR_Opr left = LIR_OprFact::illegalOpr; 1106 LIR_Opr right = LIR_OprFact::illegalOpr; 1107 1108 xin->load_item(); 1109 left = xin->result(); 1110 1111 if (is_simm13(yin->result())) { 1112 // inline int constants which are small enough to be immediate operands 1113 right = LIR_OprFact::value_type(yin->value()->type()); 1114 } else if (tag == longTag && yin->is_constant() && yin->get_jlong_constant() == 0 && 1115 (cond == If::eql || cond == If::neq)) { 1116 // inline long zero 1117 right = LIR_OprFact::value_type(yin->value()->type()); 1118 } else if (tag == objectTag && yin->is_constant() && (yin->get_jobject_constant()->is_null_object())) { 1119 right = LIR_OprFact::value_type(yin->value()->type()); 1120 } else { 1121 yin->load_item(); 1122 right = yin->result(); 1123 } 1124 set_no_result(x); 1125 1126 // add safepoint before generating condition code so it can be recomputed 1127 if (x->is_safepoint()) { 1128 // increment backedge counter if needed 1129 increment_backedge_counter(state_for(x, x->state_before()), x->profiled_bci()); 1130 __ safepoint(new_register(T_INT), state_for(x, x->state_before())); 1131 } 1132 1133 __ cmp(lir_cond(cond), left, right); 1134 // Generate branch profiling. Profiling code doesn't kill flags. 1135 profile_branch(x, cond); 1136 move_to_phi(x->state()); 1137 if (x->x()->type()->is_float_kind()) { 1138 __ branch(lir_cond(cond), right->type(), x->tsux(), x->usux()); 1139 } else { 1140 __ branch(lir_cond(cond), right->type(), x->tsux()); 1141 } 1142 assert(x->default_sux() == x->fsux(), "wrong destination above"); 1143 __ jump(x->default_sux()); 1144 } 1145 1146 1147 LIR_Opr LIRGenerator::getThreadPointer() { 1148 return FrameMap::as_pointer_opr(G2); 1149 } 1150 1151 1152 void LIRGenerator::trace_block_entry(BlockBegin* block) { 1153 __ move(LIR_OprFact::intConst(block->block_id()), FrameMap::O0_opr); 1154 LIR_OprList* args = new LIR_OprList(1); 1155 args->append(FrameMap::O0_opr); 1156 address func = CAST_FROM_FN_PTR(address, Runtime1::trace_block_entry); 1157 __ call_runtime_leaf(func, rlock_callee_saved(T_INT), LIR_OprFact::illegalOpr, args); 1158 } 1159 1160 1161 void LIRGenerator::volatile_field_store(LIR_Opr value, LIR_Address* address, 1162 CodeEmitInfo* info) { 1163 #ifdef _LP64 1164 __ store(value, address, info); 1165 #else 1166 __ volatile_store_mem_reg(value, address, info); 1167 #endif 1168 } 1169 1170 void LIRGenerator::volatile_field_load(LIR_Address* address, LIR_Opr result, 1171 CodeEmitInfo* info) { 1172 #ifdef _LP64 1173 __ load(address, result, info); 1174 #else 1175 __ volatile_load_mem_reg(address, result, info); 1176 #endif 1177 } 1178 1179 1180 void LIRGenerator::put_Object_unsafe(LIR_Opr src, LIR_Opr offset, LIR_Opr data, 1181 BasicType type, bool is_volatile) { 1182 LIR_Opr base_op = src; 1183 LIR_Opr index_op = offset; 1184 1185 bool is_obj = (type == T_ARRAY || type == T_OBJECT); 1186 #ifndef _LP64 1187 if (is_volatile && type == T_LONG) { 1188 __ volatile_store_unsafe_reg(data, src, offset, type, NULL, lir_patch_none); 1189 } else 1190 #endif 1191 { 1192 if (type == T_BOOLEAN) { 1193 type = T_BYTE; 1194 } 1195 LIR_Address* addr; 1196 if (type == T_ARRAY || type == T_OBJECT) { 1197 LIR_Opr tmp = new_pointer_register(); 1198 __ add(base_op, index_op, tmp); 1199 addr = new LIR_Address(tmp, type); 1200 } else { 1201 addr = new LIR_Address(base_op, index_op, type); 1202 } 1203 1204 if (is_obj) { 1205 pre_barrier(LIR_OprFact::address(addr), LIR_OprFact::illegalOpr /* pre_val */, 1206 true /* do_load */, false /* patch */, NULL); 1207 // _bs->c1_write_barrier_pre(this, LIR_OprFact::address(addr)); 1208 } 1209 __ move(data, addr); 1210 if (is_obj) { 1211 // This address is precise 1212 post_barrier(LIR_OprFact::address(addr), data); 1213 } 1214 } 1215 } 1216 1217 1218 void LIRGenerator::get_Object_unsafe(LIR_Opr dst, LIR_Opr src, LIR_Opr offset, 1219 BasicType type, bool is_volatile) { 1220 #ifndef _LP64 1221 if (is_volatile && type == T_LONG) { 1222 __ volatile_load_unsafe_reg(src, offset, dst, type, NULL, lir_patch_none); 1223 } else 1224 #endif 1225 { 1226 LIR_Address* addr = new LIR_Address(src, offset, type); 1227 __ load(addr, dst); 1228 } 1229 }