1 /*
   2  * Copyright (c) 2000, 2021, 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_CodeStubs.hpp"
  27 #include "c1/c1_InstructionPrinter.hpp"
  28 #include "c1/c1_LIR.hpp"
  29 #include "c1/c1_LIRAssembler.hpp"
  30 #include "c1/c1_ValueStack.hpp"
  31 #include "ci/ciInstance.hpp"
  32 #include "runtime/safepointMechanism.inline.hpp"
  33 #include "runtime/sharedRuntime.hpp"
  34 #include "runtime/vm_version.hpp"
  35 
  36 Register LIR_Opr::as_register() const {
  37   return FrameMap::cpu_rnr2reg(cpu_regnr());
  38 }
  39 
  40 Register LIR_Opr::as_register_lo() const {
  41   return FrameMap::cpu_rnr2reg(cpu_regnrLo());
  42 }
  43 
  44 Register LIR_Opr::as_register_hi() const {
  45   return FrameMap::cpu_rnr2reg(cpu_regnrHi());
  46 }
  47 
  48 LIR_Opr LIR_OprFact::illegalOpr = LIR_OprFact::illegal();
  49 LIR_Opr LIR_OprFact::nullOpr = LIR_Opr();
  50 
  51 LIR_Opr LIR_OprFact::value_type(ValueType* type) {
  52   ValueTag tag = type->tag();
  53   switch (tag) {
  54   case metaDataTag : {
  55     ClassConstant* c = type->as_ClassConstant();
  56     if (c != NULL && !c->value()->is_loaded()) {
  57       return LIR_OprFact::metadataConst(NULL);
  58     } else if (c != NULL) {
  59       return LIR_OprFact::metadataConst(c->value()->constant_encoding());
  60     } else {
  61       MethodConstant* m = type->as_MethodConstant();
  62       assert (m != NULL, "not a class or a method?");
  63       return LIR_OprFact::metadataConst(m->value()->constant_encoding());
  64     }
  65   }
  66   case objectTag : {
  67       return LIR_OprFact::oopConst(type->as_ObjectType()->encoding());
  68     }
  69   case addressTag: return LIR_OprFact::addressConst(type->as_AddressConstant()->value());
  70   case intTag    : return LIR_OprFact::intConst(type->as_IntConstant()->value());
  71   case floatTag  : return LIR_OprFact::floatConst(type->as_FloatConstant()->value());
  72   case longTag   : return LIR_OprFact::longConst(type->as_LongConstant()->value());
  73   case doubleTag : return LIR_OprFact::doubleConst(type->as_DoubleConstant()->value());
  74   default: ShouldNotReachHere(); return LIR_OprFact::intConst(-1);
  75   }
  76 }
  77 
  78 
  79 //---------------------------------------------------
  80 
  81 
  82 LIR_Address::Scale LIR_Address::scale(BasicType type) {
  83   int elem_size = type2aelembytes(type);
  84   switch (elem_size) {
  85   case 1: return LIR_Address::times_1;
  86   case 2: return LIR_Address::times_2;
  87   case 4: return LIR_Address::times_4;
  88   case 8: return LIR_Address::times_8;
  89   }
  90   ShouldNotReachHere();
  91   return LIR_Address::times_1;
  92 }
  93 
  94 //---------------------------------------------------
  95 
  96 char LIR_Opr::type_char(BasicType t) {
  97   switch (t) {
  98     case T_ARRAY:
  99       t = T_OBJECT;
 100     case T_BOOLEAN:
 101     case T_CHAR:
 102     case T_FLOAT:
 103     case T_DOUBLE:
 104     case T_BYTE:
 105     case T_SHORT:
 106     case T_INT:
 107     case T_LONG:
 108     case T_OBJECT:
 109     case T_ADDRESS:
 110     case T_VOID:
 111       return ::type2char(t);
 112     case T_METADATA:
 113       return 'M';
 114     case T_ILLEGAL:
 115       return '?';
 116 
 117     default:
 118       ShouldNotReachHere();
 119       return '?';
 120   }
 121 }
 122 
 123 #ifndef PRODUCT
 124 void LIR_Opr::validate_type() const {
 125 
 126 #ifdef ASSERT
 127   if (!is_pointer() && !is_illegal()) {
 128     OprKind kindfield = kind_field(); // Factored out because of compiler bug, see 8002160
 129     switch (as_BasicType(type_field())) {
 130     case T_LONG:
 131       assert((kindfield == cpu_register || kindfield == stack_value) &&
 132              size_field() == double_size, "must match");
 133       break;
 134     case T_FLOAT:
 135       // FP return values can be also in CPU registers on ARM (softfp ABI)
 136       assert((kindfield == fpu_register || kindfield == stack_value
 137              ARM_ONLY(|| kindfield == cpu_register) ) &&
 138              size_field() == single_size, "must match");
 139       break;
 140     case T_DOUBLE:
 141       // FP return values can be also in CPU registers on ARM (softfp ABI)
 142       assert((kindfield == fpu_register || kindfield == stack_value
 143              ARM_ONLY(|| kindfield == cpu_register) ) &&
 144              size_field() == double_size, "must match");
 145       break;
 146     case T_BOOLEAN:
 147     case T_CHAR:
 148     case T_BYTE:
 149     case T_SHORT:
 150     case T_INT:
 151     case T_ADDRESS:
 152     case T_OBJECT:
 153     case T_METADATA:
 154     case T_ARRAY:
 155       assert((kindfield == cpu_register || kindfield == stack_value) &&
 156              size_field() == single_size, "must match");
 157       break;
 158 
 159     case T_ILLEGAL:
 160       // XXX TKR also means unknown right now
 161       // assert(is_illegal(), "must match");
 162       break;
 163 
 164     default:
 165       ShouldNotReachHere();
 166     }
 167   }
 168 #endif
 169 
 170 }
 171 #endif // PRODUCT
 172 
 173 
 174 bool LIR_Opr::is_oop() const {
 175   if (is_pointer()) {
 176     return pointer()->is_oop_pointer();
 177   } else {
 178     OprType t= type_field();
 179     assert(t != unknown_type, "not set");
 180     return t == object_type;
 181   }
 182 }
 183 
 184 
 185 
 186 void LIR_Op2::verify() const {
 187 #ifdef ASSERT
 188   switch (code()) {
 189     case lir_cmove:
 190     case lir_xchg:
 191       break;
 192 
 193     default:
 194       assert(!result_opr()->is_register() || !result_opr()->is_oop_register(),
 195              "can't produce oops from arith");
 196   }
 197 
 198   if (TwoOperandLIRForm) {
 199 
 200 #ifdef ASSERT
 201     bool threeOperandForm = false;
 202 #ifdef S390
 203     // There are 3 operand shifts on S390 (see LIR_Assembler::shift_op()).
 204     threeOperandForm =
 205       code() == lir_shl ||
 206       ((code() == lir_shr || code() == lir_ushr) && (result_opr()->is_double_cpu() || in_opr1()->type() == T_OBJECT));
 207 #endif
 208 #endif
 209 
 210     switch (code()) {
 211     case lir_add:
 212     case lir_sub:
 213     case lir_mul:
 214     case lir_div:
 215     case lir_rem:
 216     case lir_logic_and:
 217     case lir_logic_or:
 218     case lir_logic_xor:
 219     case lir_shl:
 220     case lir_shr:
 221       assert(in_opr1() == result_opr() || threeOperandForm, "opr1 and result must match");
 222       assert(in_opr1()->is_valid() && in_opr2()->is_valid(), "must be valid");
 223       break;
 224 
 225     // special handling for lir_ushr because of write barriers
 226     case lir_ushr:
 227       assert(in_opr1() == result_opr() || in_opr2()->is_constant() || threeOperandForm, "opr1 and result must match or shift count is constant");
 228       assert(in_opr1()->is_valid() && in_opr2()->is_valid(), "must be valid");
 229       break;
 230 
 231     default:
 232       break;
 233     }
 234   }
 235 #endif
 236 }
 237 
 238 
 239 LIR_OpBranch::LIR_OpBranch(LIR_Condition cond, BlockBegin* block)
 240   : LIR_Op(lir_branch, LIR_OprFact::illegalOpr, (CodeEmitInfo*)NULL)
 241   , _cond(cond)
 242   , _label(block->label())
 243   , _block(block)
 244   , _ublock(NULL)
 245   , _stub(NULL) {
 246 }
 247 
 248 LIR_OpBranch::LIR_OpBranch(LIR_Condition cond, CodeStub* stub) :
 249   LIR_Op(lir_branch, LIR_OprFact::illegalOpr, (CodeEmitInfo*)NULL)
 250   , _cond(cond)
 251   , _label(stub->entry())
 252   , _block(NULL)
 253   , _ublock(NULL)
 254   , _stub(stub) {
 255 }
 256 
 257 LIR_OpBranch::LIR_OpBranch(LIR_Condition cond, BlockBegin* block, BlockBegin* ublock)
 258   : LIR_Op(lir_cond_float_branch, LIR_OprFact::illegalOpr, (CodeEmitInfo*)NULL)
 259   , _cond(cond)
 260   , _label(block->label())
 261   , _block(block)
 262   , _ublock(ublock)
 263   , _stub(NULL)
 264 {
 265 }
 266 
 267 void LIR_OpBranch::change_block(BlockBegin* b) {
 268   assert(_block != NULL, "must have old block");
 269   assert(_block->label() == label(), "must be equal");
 270 
 271   _block = b;
 272   _label = b->label();
 273 }
 274 
 275 void LIR_OpBranch::change_ublock(BlockBegin* b) {
 276   assert(_ublock != NULL, "must have old block");
 277   _ublock = b;
 278 }
 279 
 280 void LIR_OpBranch::negate_cond() {
 281   switch (_cond) {
 282     case lir_cond_equal:        _cond = lir_cond_notEqual;     break;
 283     case lir_cond_notEqual:     _cond = lir_cond_equal;        break;
 284     case lir_cond_less:         _cond = lir_cond_greaterEqual; break;
 285     case lir_cond_lessEqual:    _cond = lir_cond_greater;      break;
 286     case lir_cond_greaterEqual: _cond = lir_cond_less;         break;
 287     case lir_cond_greater:      _cond = lir_cond_lessEqual;    break;
 288     default: ShouldNotReachHere();
 289   }
 290 }
 291 
 292 
 293 LIR_OpTypeCheck::LIR_OpTypeCheck(LIR_Code code, LIR_Opr result, LIR_Opr object, ciKlass* klass,
 294                                  LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3,
 295                                  bool fast_check, CodeEmitInfo* info_for_exception, CodeEmitInfo* info_for_patch,
 296                                  CodeStub* stub)
 297 
 298   : LIR_Op(code, result, NULL)
 299   , _object(object)
 300   , _array(LIR_OprFact::illegalOpr)
 301   , _klass(klass)
 302   , _tmp1(tmp1)
 303   , _tmp2(tmp2)
 304   , _tmp3(tmp3)
 305   , _fast_check(fast_check)
 306   , _info_for_patch(info_for_patch)
 307   , _info_for_exception(info_for_exception)
 308   , _stub(stub)
 309   , _profiled_method(NULL)
 310   , _profiled_bci(-1)
 311   , _should_profile(false)
 312 {
 313   if (code == lir_checkcast) {
 314     assert(info_for_exception != NULL, "checkcast throws exceptions");
 315   } else if (code == lir_instanceof) {
 316     assert(info_for_exception == NULL, "instanceof throws no exceptions");
 317   } else {
 318     ShouldNotReachHere();
 319   }
 320 }
 321 
 322 
 323 
 324 LIR_OpTypeCheck::LIR_OpTypeCheck(LIR_Code code, LIR_Opr object, LIR_Opr array, LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, CodeEmitInfo* info_for_exception)
 325   : LIR_Op(code, LIR_OprFact::illegalOpr, NULL)
 326   , _object(object)
 327   , _array(array)
 328   , _klass(NULL)
 329   , _tmp1(tmp1)
 330   , _tmp2(tmp2)
 331   , _tmp3(tmp3)
 332   , _fast_check(false)
 333   , _info_for_patch(NULL)
 334   , _info_for_exception(info_for_exception)
 335   , _stub(NULL)
 336   , _profiled_method(NULL)
 337   , _profiled_bci(-1)
 338   , _should_profile(false)
 339 {
 340   if (code == lir_store_check) {
 341     _stub = new ArrayStoreExceptionStub(object, info_for_exception);
 342     assert(info_for_exception != NULL, "store_check throws exceptions");
 343   } else {
 344     ShouldNotReachHere();
 345   }
 346 }
 347 
 348 
 349 LIR_OpArrayCopy::LIR_OpArrayCopy(LIR_Opr src, LIR_Opr src_pos, LIR_Opr dst, LIR_Opr dst_pos, LIR_Opr length,
 350                                  LIR_Opr tmp, ciArrayKlass* expected_type, int flags, CodeEmitInfo* info)
 351   : LIR_Op(lir_arraycopy, LIR_OprFact::illegalOpr, info)
 352   , _src(src)
 353   , _src_pos(src_pos)
 354   , _dst(dst)
 355   , _dst_pos(dst_pos)
 356   , _length(length)
 357   , _tmp(tmp)
 358   , _expected_type(expected_type)
 359   , _flags(flags) {
 360   _stub = new ArrayCopyStub(this);
 361 }
 362 
 363 LIR_OpUpdateCRC32::LIR_OpUpdateCRC32(LIR_Opr crc, LIR_Opr val, LIR_Opr res)
 364   : LIR_Op(lir_updatecrc32, res, NULL)
 365   , _crc(crc)
 366   , _val(val) {
 367 }
 368 
 369 //-------------------verify--------------------------
 370 
 371 void LIR_Op1::verify() const {
 372   switch(code()) {
 373   case lir_move:
 374     assert(in_opr()->is_valid() && result_opr()->is_valid(), "must be");
 375     break;
 376   case lir_null_check:
 377     assert(in_opr()->is_register(), "must be");
 378     break;
 379   case lir_return:
 380     assert(in_opr()->is_register() || in_opr()->is_illegal(), "must be");
 381     break;
 382   default:
 383     break;
 384   }
 385 }
 386 
 387 void LIR_OpRTCall::verify() const {
 388   assert(strcmp(Runtime1::name_for_address(addr()), "<unknown function>") != 0, "unknown function");
 389 }
 390 
 391 //-------------------visits--------------------------
 392 
 393 // complete rework of LIR instruction visitor.
 394 // The virtual call for each instruction type is replaced by a big
 395 // switch that adds the operands for each instruction
 396 
 397 void LIR_OpVisitState::visit(LIR_Op* op) {
 398   // copy information from the LIR_Op
 399   reset();
 400   set_op(op);
 401 
 402   switch (op->code()) {
 403 
 404 // LIR_Op0
 405     case lir_fpop_raw:                 // result and info always invalid
 406     case lir_breakpoint:               // result and info always invalid
 407     case lir_membar:                   // result and info always invalid
 408     case lir_membar_acquire:           // result and info always invalid
 409     case lir_membar_release:           // result and info always invalid
 410     case lir_membar_loadload:          // result and info always invalid
 411     case lir_membar_storestore:        // result and info always invalid
 412     case lir_membar_loadstore:         // result and info always invalid
 413     case lir_membar_storeload:         // result and info always invalid
 414     case lir_on_spin_wait:
 415     {
 416       assert(op->as_Op0() != NULL, "must be");
 417       assert(op->_info == NULL, "info not used by this instruction");
 418       assert(op->_result->is_illegal(), "not used");
 419       break;
 420     }
 421 
 422     case lir_nop:                      // may have info, result always invalid
 423     case lir_std_entry:                // may have result, info always invalid
 424     case lir_osr_entry:                // may have result, info always invalid
 425     case lir_get_thread:               // may have result, info always invalid
 426     {
 427       assert(op->as_Op0() != NULL, "must be");
 428       if (op->_info != NULL)           do_info(op->_info);
 429       if (op->_result->is_valid())     do_output(op->_result);
 430       break;
 431     }
 432 
 433 
 434 // LIR_OpLabel
 435     case lir_label:                    // result and info always invalid
 436     {
 437       assert(op->as_OpLabel() != NULL, "must be");
 438       assert(op->_info == NULL, "info not used by this instruction");
 439       assert(op->_result->is_illegal(), "not used");
 440       break;
 441     }
 442 
 443 
 444 // LIR_Op1
 445     case lir_fxch:           // input always valid, result and info always invalid
 446     case lir_fld:            // input always valid, result and info always invalid
 447     case lir_push:           // input always valid, result and info always invalid
 448     case lir_pop:            // input always valid, result and info always invalid
 449     case lir_leal:           // input and result always valid, info always invalid
 450     case lir_monaddr:        // input and result always valid, info always invalid
 451     case lir_null_check:     // input and info always valid, result always invalid
 452     case lir_move:           // input and result always valid, may have info
 453     {
 454       assert(op->as_Op1() != NULL, "must be");
 455       LIR_Op1* op1 = (LIR_Op1*)op;
 456 
 457       if (op1->_info)                  do_info(op1->_info);
 458       if (op1->_opr->is_valid())       do_input(op1->_opr);
 459       if (op1->_result->is_valid())    do_output(op1->_result);
 460 
 461       break;
 462     }
 463 
 464     case lir_return:
 465     {
 466       assert(op->as_OpReturn() != NULL, "must be");
 467       LIR_OpReturn* op_ret = (LIR_OpReturn*)op;
 468 
 469       if (op_ret->_info)               do_info(op_ret->_info);
 470       if (op_ret->_opr->is_valid())    do_input(op_ret->_opr);
 471       if (op_ret->_result->is_valid()) do_output(op_ret->_result);
 472       if (op_ret->stub() != NULL)      do_stub(op_ret->stub());
 473 
 474       break;
 475     }
 476 
 477     case lir_safepoint:
 478     {
 479       assert(op->as_Op1() != NULL, "must be");
 480       LIR_Op1* op1 = (LIR_Op1*)op;
 481 
 482       assert(op1->_info != NULL, "");  do_info(op1->_info);
 483       if (op1->_opr->is_valid())       do_temp(op1->_opr); // safepoints on SPARC need temporary register
 484       assert(op1->_result->is_illegal(), "safepoint does not produce value");
 485 
 486       break;
 487     }
 488 
 489 // LIR_OpConvert;
 490     case lir_convert:        // input and result always valid, info always invalid
 491     {
 492       assert(op->as_OpConvert() != NULL, "must be");
 493       LIR_OpConvert* opConvert = (LIR_OpConvert*)op;
 494 
 495       assert(opConvert->_info == NULL, "must be");
 496       if (opConvert->_opr->is_valid())       do_input(opConvert->_opr);
 497       if (opConvert->_result->is_valid())    do_output(opConvert->_result);
 498       do_stub(opConvert->_stub);
 499 
 500       break;
 501     }
 502 
 503 // LIR_OpBranch;
 504     case lir_branch:                   // may have info, input and result register always invalid
 505     case lir_cond_float_branch:        // may have info, input and result register always invalid
 506     {
 507       assert(op->as_OpBranch() != NULL, "must be");
 508       LIR_OpBranch* opBranch = (LIR_OpBranch*)op;
 509 
 510       if (opBranch->_info != NULL)     do_info(opBranch->_info);
 511       assert(opBranch->_result->is_illegal(), "not used");
 512       if (opBranch->_stub != NULL)     opBranch->stub()->visit(this);
 513 
 514       break;
 515     }
 516 
 517 
 518 // LIR_OpAllocObj
 519     case lir_alloc_object:
 520     {
 521       assert(op->as_OpAllocObj() != NULL, "must be");
 522       LIR_OpAllocObj* opAllocObj = (LIR_OpAllocObj*)op;
 523 
 524       if (opAllocObj->_info)                     do_info(opAllocObj->_info);
 525       if (opAllocObj->_opr->is_valid()) {        do_input(opAllocObj->_opr);
 526                                                  do_temp(opAllocObj->_opr);
 527                                         }
 528       if (opAllocObj->_tmp1->is_valid())         do_temp(opAllocObj->_tmp1);
 529       if (opAllocObj->_tmp2->is_valid())         do_temp(opAllocObj->_tmp2);
 530       if (opAllocObj->_tmp3->is_valid())         do_temp(opAllocObj->_tmp3);
 531       if (opAllocObj->_tmp4->is_valid())         do_temp(opAllocObj->_tmp4);
 532       if (opAllocObj->_result->is_valid())       do_output(opAllocObj->_result);
 533                                                  do_stub(opAllocObj->_stub);
 534       break;
 535     }
 536 
 537 
 538 // LIR_OpRoundFP;
 539     case lir_roundfp: {
 540       assert(op->as_OpRoundFP() != NULL, "must be");
 541       LIR_OpRoundFP* opRoundFP = (LIR_OpRoundFP*)op;
 542 
 543       assert(op->_info == NULL, "info not used by this instruction");
 544       assert(opRoundFP->_tmp->is_illegal(), "not used");
 545       do_input(opRoundFP->_opr);
 546       do_output(opRoundFP->_result);
 547 
 548       break;
 549     }
 550 
 551 
 552 // LIR_Op2
 553     case lir_cmp:
 554     case lir_cmp_l2i:
 555     case lir_ucmp_fd2i:
 556     case lir_cmp_fd2i:
 557     case lir_add:
 558     case lir_sub:
 559     case lir_rem:
 560     case lir_sqrt:
 561     case lir_abs:
 562     case lir_neg:
 563     case lir_logic_and:
 564     case lir_logic_or:
 565     case lir_logic_xor:
 566     case lir_shl:
 567     case lir_shr:
 568     case lir_ushr:
 569     case lir_xadd:
 570     case lir_xchg:
 571     case lir_assert:
 572     {
 573       assert(op->as_Op2() != NULL, "must be");
 574       LIR_Op2* op2 = (LIR_Op2*)op;
 575       assert(op2->_tmp2->is_illegal() && op2->_tmp3->is_illegal() &&
 576              op2->_tmp4->is_illegal() && op2->_tmp5->is_illegal(), "not used");
 577 
 578       if (op2->_info)                     do_info(op2->_info);
 579       if (op2->_opr1->is_valid())         do_input(op2->_opr1);
 580       if (op2->_opr2->is_valid())         do_input(op2->_opr2);
 581       if (op2->_tmp1->is_valid())         do_temp(op2->_tmp1);
 582       if (op2->_result->is_valid())       do_output(op2->_result);
 583       if (op->code() == lir_xchg || op->code() == lir_xadd) {
 584         // on ARM and PPC, return value is loaded first so could
 585         // destroy inputs. On other platforms that implement those
 586         // (x86, sparc), the extra constrainsts are harmless.
 587         if (op2->_opr1->is_valid())       do_temp(op2->_opr1);
 588         if (op2->_opr2->is_valid())       do_temp(op2->_opr2);
 589       }
 590 
 591       break;
 592     }
 593 
 594     // special handling for cmove: right input operand must not be equal
 595     // to the result operand, otherwise the backend fails
 596     case lir_cmove:
 597     {
 598       assert(op->as_Op2() != NULL, "must be");
 599       LIR_Op2* op2 = (LIR_Op2*)op;
 600 
 601       assert(op2->_info == NULL && op2->_tmp1->is_illegal() && op2->_tmp2->is_illegal() &&
 602              op2->_tmp3->is_illegal() && op2->_tmp4->is_illegal() && op2->_tmp5->is_illegal(), "not used");
 603       assert(op2->_opr1->is_valid() && op2->_opr2->is_valid() && op2->_result->is_valid(), "used");
 604 
 605       do_input(op2->_opr1);
 606       do_input(op2->_opr2);
 607       do_temp(op2->_opr2);
 608       do_output(op2->_result);
 609 
 610       break;
 611     }
 612 
 613     // vspecial handling for strict operations: register input operands
 614     // as temp to guarantee that they do not overlap with other
 615     // registers
 616     case lir_mul:
 617     case lir_div:
 618     {
 619       assert(op->as_Op2() != NULL, "must be");
 620       LIR_Op2* op2 = (LIR_Op2*)op;
 621 
 622       assert(op2->_info == NULL, "not used");
 623       assert(op2->_opr1->is_valid(), "used");
 624       assert(op2->_opr2->is_valid(), "used");
 625       assert(op2->_result->is_valid(), "used");
 626       assert(op2->_tmp2->is_illegal() && op2->_tmp3->is_illegal() &&
 627              op2->_tmp4->is_illegal() && op2->_tmp5->is_illegal(), "not used");
 628 
 629       do_input(op2->_opr1); do_temp(op2->_opr1);
 630       do_input(op2->_opr2); do_temp(op2->_opr2);
 631       if (op2->_tmp1->is_valid()) do_temp(op2->_tmp1);
 632       do_output(op2->_result);
 633 
 634       break;
 635     }
 636 
 637     case lir_throw: {
 638       assert(op->as_Op2() != NULL, "must be");
 639       LIR_Op2* op2 = (LIR_Op2*)op;
 640 
 641       if (op2->_info)                     do_info(op2->_info);
 642       if (op2->_opr1->is_valid())         do_temp(op2->_opr1);
 643       if (op2->_opr2->is_valid())         do_input(op2->_opr2); // exception object is input parameter
 644       assert(op2->_result->is_illegal(), "no result");
 645       assert(op2->_tmp2->is_illegal() && op2->_tmp3->is_illegal() &&
 646              op2->_tmp4->is_illegal() && op2->_tmp5->is_illegal(), "not used");
 647 
 648       break;
 649     }
 650 
 651     case lir_unwind: {
 652       assert(op->as_Op1() != NULL, "must be");
 653       LIR_Op1* op1 = (LIR_Op1*)op;
 654 
 655       assert(op1->_info == NULL, "no info");
 656       assert(op1->_opr->is_valid(), "exception oop");         do_input(op1->_opr);
 657       assert(op1->_result->is_illegal(), "no result");
 658 
 659       break;
 660     }
 661 
 662 // LIR_Op3
 663     case lir_idiv:
 664     case lir_irem: {
 665       assert(op->as_Op3() != NULL, "must be");
 666       LIR_Op3* op3= (LIR_Op3*)op;
 667 
 668       if (op3->_info)                     do_info(op3->_info);
 669       if (op3->_opr1->is_valid())         do_input(op3->_opr1);
 670 
 671       // second operand is input and temp, so ensure that second operand
 672       // and third operand get not the same register
 673       if (op3->_opr2->is_valid())         do_input(op3->_opr2);
 674       if (op3->_opr2->is_valid())         do_temp(op3->_opr2);
 675       if (op3->_opr3->is_valid())         do_temp(op3->_opr3);
 676 
 677       if (op3->_result->is_valid())       do_output(op3->_result);
 678 
 679       break;
 680     }
 681 
 682     case lir_fmad:
 683     case lir_fmaf: {
 684       assert(op->as_Op3() != NULL, "must be");
 685       LIR_Op3* op3= (LIR_Op3*)op;
 686       assert(op3->_info == NULL, "no info");
 687       do_input(op3->_opr1);
 688       do_input(op3->_opr2);
 689       do_input(op3->_opr3);
 690       do_output(op3->_result);
 691       break;
 692     }
 693 
 694 // LIR_OpJavaCall
 695     case lir_static_call:
 696     case lir_optvirtual_call:
 697     case lir_icvirtual_call:
 698     case lir_dynamic_call: {
 699       LIR_OpJavaCall* opJavaCall = op->as_OpJavaCall();
 700       assert(opJavaCall != NULL, "must be");
 701 
 702       if (opJavaCall->_receiver->is_valid())     do_input(opJavaCall->_receiver);
 703 
 704       // only visit register parameters
 705       int n = opJavaCall->_arguments->length();
 706       for (int i = opJavaCall->_receiver->is_valid() ? 1 : 0; i < n; i++) {
 707         if (!opJavaCall->_arguments->at(i)->is_pointer()) {
 708           do_input(*opJavaCall->_arguments->adr_at(i));
 709         }
 710       }
 711 
 712       if (opJavaCall->_info)                     do_info(opJavaCall->_info);
 713       if (FrameMap::method_handle_invoke_SP_save_opr() != LIR_OprFact::illegalOpr &&
 714           opJavaCall->is_method_handle_invoke()) {
 715         opJavaCall->_method_handle_invoke_SP_save_opr = FrameMap::method_handle_invoke_SP_save_opr();
 716         do_temp(opJavaCall->_method_handle_invoke_SP_save_opr);
 717       }
 718       do_call();
 719       if (opJavaCall->_result->is_valid())       do_output(opJavaCall->_result);
 720 
 721       break;
 722     }
 723 
 724 
 725 // LIR_OpRTCall
 726     case lir_rtcall: {
 727       assert(op->as_OpRTCall() != NULL, "must be");
 728       LIR_OpRTCall* opRTCall = (LIR_OpRTCall*)op;
 729 
 730       // only visit register parameters
 731       int n = opRTCall->_arguments->length();
 732       for (int i = 0; i < n; i++) {
 733         if (!opRTCall->_arguments->at(i)->is_pointer()) {
 734           do_input(*opRTCall->_arguments->adr_at(i));
 735         }
 736       }
 737       if (opRTCall->_info)                     do_info(opRTCall->_info);
 738       if (opRTCall->_tmp->is_valid())          do_temp(opRTCall->_tmp);
 739       do_call();
 740       if (opRTCall->_result->is_valid())       do_output(opRTCall->_result);
 741 
 742       break;
 743     }
 744 
 745 
 746 // LIR_OpArrayCopy
 747     case lir_arraycopy: {
 748       assert(op->as_OpArrayCopy() != NULL, "must be");
 749       LIR_OpArrayCopy* opArrayCopy = (LIR_OpArrayCopy*)op;
 750 
 751       assert(opArrayCopy->_result->is_illegal(), "unused");
 752       assert(opArrayCopy->_src->is_valid(), "used");          do_input(opArrayCopy->_src);     do_temp(opArrayCopy->_src);
 753       assert(opArrayCopy->_src_pos->is_valid(), "used");      do_input(opArrayCopy->_src_pos); do_temp(opArrayCopy->_src_pos);
 754       assert(opArrayCopy->_dst->is_valid(), "used");          do_input(opArrayCopy->_dst);     do_temp(opArrayCopy->_dst);
 755       assert(opArrayCopy->_dst_pos->is_valid(), "used");      do_input(opArrayCopy->_dst_pos); do_temp(opArrayCopy->_dst_pos);
 756       assert(opArrayCopy->_length->is_valid(), "used");       do_input(opArrayCopy->_length);  do_temp(opArrayCopy->_length);
 757       assert(opArrayCopy->_tmp->is_valid(), "used");          do_temp(opArrayCopy->_tmp);
 758       if (opArrayCopy->_info)                     do_info(opArrayCopy->_info);
 759 
 760       // the implementation of arraycopy always has a call into the runtime
 761       do_call();
 762 
 763       break;
 764     }
 765 
 766 
 767 // LIR_OpUpdateCRC32
 768     case lir_updatecrc32: {
 769       assert(op->as_OpUpdateCRC32() != NULL, "must be");
 770       LIR_OpUpdateCRC32* opUp = (LIR_OpUpdateCRC32*)op;
 771 
 772       assert(opUp->_crc->is_valid(), "used");          do_input(opUp->_crc);     do_temp(opUp->_crc);
 773       assert(opUp->_val->is_valid(), "used");          do_input(opUp->_val);     do_temp(opUp->_val);
 774       assert(opUp->_result->is_valid(), "used");       do_output(opUp->_result);
 775       assert(opUp->_info == NULL, "no info for LIR_OpUpdateCRC32");
 776 
 777       break;
 778     }
 779 
 780 
 781 // LIR_OpLock
 782     case lir_lock:
 783     case lir_unlock: {
 784       assert(op->as_OpLock() != NULL, "must be");
 785       LIR_OpLock* opLock = (LIR_OpLock*)op;
 786 
 787       if (opLock->_info)                          do_info(opLock->_info);
 788 
 789       // TODO: check if these operands really have to be temp
 790       // (or if input is sufficient). This may have influence on the oop map!
 791       assert(opLock->_lock->is_valid(), "used");  do_temp(opLock->_lock);
 792       assert(opLock->_hdr->is_valid(),  "used");  do_temp(opLock->_hdr);
 793       assert(opLock->_obj->is_valid(),  "used");  do_temp(opLock->_obj);
 794 
 795       if (opLock->_scratch->is_valid())           do_temp(opLock->_scratch);
 796       assert(opLock->_result->is_illegal(), "unused");
 797 
 798       do_stub(opLock->_stub);
 799 
 800       break;
 801     }
 802 
 803 
 804 // LIR_OpDelay
 805     case lir_delay_slot: {
 806       assert(op->as_OpDelay() != NULL, "must be");
 807       LIR_OpDelay* opDelay = (LIR_OpDelay*)op;
 808 
 809       visit(opDelay->delay_op());
 810       break;
 811     }
 812 
 813 // LIR_OpTypeCheck
 814     case lir_instanceof:
 815     case lir_checkcast:
 816     case lir_store_check: {
 817       assert(op->as_OpTypeCheck() != NULL, "must be");
 818       LIR_OpTypeCheck* opTypeCheck = (LIR_OpTypeCheck*)op;
 819 
 820       if (opTypeCheck->_info_for_exception)       do_info(opTypeCheck->_info_for_exception);
 821       if (opTypeCheck->_info_for_patch)           do_info(opTypeCheck->_info_for_patch);
 822       if (opTypeCheck->_object->is_valid())       do_input(opTypeCheck->_object);
 823       if (op->code() == lir_store_check && opTypeCheck->_object->is_valid()) {
 824         do_temp(opTypeCheck->_object);
 825       }
 826       if (opTypeCheck->_array->is_valid())        do_input(opTypeCheck->_array);
 827       if (opTypeCheck->_tmp1->is_valid())         do_temp(opTypeCheck->_tmp1);
 828       if (opTypeCheck->_tmp2->is_valid())         do_temp(opTypeCheck->_tmp2);
 829       if (opTypeCheck->_tmp3->is_valid())         do_temp(opTypeCheck->_tmp3);
 830       if (opTypeCheck->_result->is_valid())       do_output(opTypeCheck->_result);
 831                                                   do_stub(opTypeCheck->_stub);
 832       break;
 833     }
 834 
 835 // LIR_OpCompareAndSwap
 836     case lir_cas_long:
 837     case lir_cas_obj:
 838     case lir_cas_int: {
 839       assert(op->as_OpCompareAndSwap() != NULL, "must be");
 840       LIR_OpCompareAndSwap* opCompareAndSwap = (LIR_OpCompareAndSwap*)op;
 841 
 842       assert(opCompareAndSwap->_addr->is_valid(),      "used");
 843       assert(opCompareAndSwap->_cmp_value->is_valid(), "used");
 844       assert(opCompareAndSwap->_new_value->is_valid(), "used");
 845       if (opCompareAndSwap->_info)                    do_info(opCompareAndSwap->_info);
 846                                                       do_input(opCompareAndSwap->_addr);
 847                                                       do_temp(opCompareAndSwap->_addr);
 848                                                       do_input(opCompareAndSwap->_cmp_value);
 849                                                       do_temp(opCompareAndSwap->_cmp_value);
 850                                                       do_input(opCompareAndSwap->_new_value);
 851                                                       do_temp(opCompareAndSwap->_new_value);
 852       if (opCompareAndSwap->_tmp1->is_valid())        do_temp(opCompareAndSwap->_tmp1);
 853       if (opCompareAndSwap->_tmp2->is_valid())        do_temp(opCompareAndSwap->_tmp2);
 854       if (opCompareAndSwap->_result->is_valid())      do_output(opCompareAndSwap->_result);
 855 
 856       break;
 857     }
 858 
 859 
 860 // LIR_OpAllocArray;
 861     case lir_alloc_array: {
 862       assert(op->as_OpAllocArray() != NULL, "must be");
 863       LIR_OpAllocArray* opAllocArray = (LIR_OpAllocArray*)op;
 864 
 865       if (opAllocArray->_info)                        do_info(opAllocArray->_info);
 866       if (opAllocArray->_klass->is_valid())           do_input(opAllocArray->_klass); do_temp(opAllocArray->_klass);
 867       if (opAllocArray->_len->is_valid())             do_input(opAllocArray->_len);   do_temp(opAllocArray->_len);
 868       if (opAllocArray->_tmp1->is_valid())            do_temp(opAllocArray->_tmp1);
 869       if (opAllocArray->_tmp2->is_valid())            do_temp(opAllocArray->_tmp2);
 870       if (opAllocArray->_tmp3->is_valid())            do_temp(opAllocArray->_tmp3);
 871       if (opAllocArray->_tmp4->is_valid())            do_temp(opAllocArray->_tmp4);
 872       if (opAllocArray->_result->is_valid())          do_output(opAllocArray->_result);
 873                                                       do_stub(opAllocArray->_stub);
 874       break;
 875     }
 876 
 877 // LIR_OpLoadKlass
 878     case lir_load_klass:
 879     {
 880       LIR_OpLoadKlass* opLoadKlass = op->as_OpLoadKlass();
 881       assert(opLoadKlass != NULL, "must be");
 882 
 883       do_input(opLoadKlass->_obj);
 884       do_output(opLoadKlass->_result);
 885       if (opLoadKlass->_info) do_info(opLoadKlass->_info);
 886       break;
 887     }
 888 
 889 
 890 // LIR_OpProfileCall:
 891     case lir_profile_call: {
 892       assert(op->as_OpProfileCall() != NULL, "must be");
 893       LIR_OpProfileCall* opProfileCall = (LIR_OpProfileCall*)op;
 894 
 895       if (opProfileCall->_recv->is_valid())              do_temp(opProfileCall->_recv);
 896       assert(opProfileCall->_mdo->is_valid(), "used");   do_temp(opProfileCall->_mdo);
 897       assert(opProfileCall->_tmp1->is_valid(), "used");  do_temp(opProfileCall->_tmp1);
 898       break;
 899     }
 900 
 901 // LIR_OpProfileType:
 902     case lir_profile_type: {
 903       assert(op->as_OpProfileType() != NULL, "must be");
 904       LIR_OpProfileType* opProfileType = (LIR_OpProfileType*)op;
 905 
 906       do_input(opProfileType->_mdp); do_temp(opProfileType->_mdp);
 907       do_input(opProfileType->_obj);
 908       do_temp(opProfileType->_tmp);
 909       break;
 910     }
 911   default:
 912     op->visit(this);
 913   }
 914 }
 915 
 916 void LIR_Op::visit(LIR_OpVisitState* state) {
 917   ShouldNotReachHere();
 918 }
 919 
 920 void LIR_OpVisitState::do_stub(CodeStub* stub) {
 921   if (stub != NULL) {
 922     stub->visit(this);
 923   }
 924 }
 925 
 926 XHandlers* LIR_OpVisitState::all_xhandler() {
 927   XHandlers* result = NULL;
 928 
 929   int i;
 930   for (i = 0; i < info_count(); i++) {
 931     if (info_at(i)->exception_handlers() != NULL) {
 932       result = info_at(i)->exception_handlers();
 933       break;
 934     }
 935   }
 936 
 937 #ifdef ASSERT
 938   for (i = 0; i < info_count(); i++) {
 939     assert(info_at(i)->exception_handlers() == NULL ||
 940            info_at(i)->exception_handlers() == result,
 941            "only one xhandler list allowed per LIR-operation");
 942   }
 943 #endif
 944 
 945   if (result != NULL) {
 946     return result;
 947   } else {
 948     return new XHandlers();
 949   }
 950 
 951   return result;
 952 }
 953 
 954 
 955 #ifdef ASSERT
 956 bool LIR_OpVisitState::no_operands(LIR_Op* op) {
 957   visit(op);
 958 
 959   return opr_count(inputMode) == 0 &&
 960          opr_count(outputMode) == 0 &&
 961          opr_count(tempMode) == 0 &&
 962          info_count() == 0 &&
 963          !has_call() &&
 964          !has_slow_case();
 965 }
 966 #endif
 967 
 968 // LIR_OpReturn
 969 LIR_OpReturn::LIR_OpReturn(LIR_Opr opr) :
 970     LIR_Op1(lir_return, opr, (CodeEmitInfo*)NULL /* info */),
 971     _stub(NULL) {
 972   if (VM_Version::supports_stack_watermark_barrier()) {
 973     _stub = new C1SafepointPollStub();
 974   }
 975 }
 976 
 977 //---------------------------------------------------
 978 
 979 
 980 void LIR_OpJavaCall::emit_code(LIR_Assembler* masm) {
 981   masm->emit_call(this);
 982 }
 983 
 984 void LIR_OpRTCall::emit_code(LIR_Assembler* masm) {
 985   masm->emit_rtcall(this);
 986 }
 987 
 988 void LIR_OpLabel::emit_code(LIR_Assembler* masm) {
 989   masm->emit_opLabel(this);
 990 }
 991 
 992 void LIR_OpArrayCopy::emit_code(LIR_Assembler* masm) {
 993   masm->emit_arraycopy(this);
 994   masm->append_code_stub(stub());
 995 }
 996 
 997 void LIR_OpUpdateCRC32::emit_code(LIR_Assembler* masm) {
 998   masm->emit_updatecrc32(this);
 999 }
1000 
1001 void LIR_Op0::emit_code(LIR_Assembler* masm) {
1002   masm->emit_op0(this);
1003 }
1004 
1005 void LIR_Op1::emit_code(LIR_Assembler* masm) {
1006   masm->emit_op1(this);
1007 }
1008 
1009 void LIR_OpAllocObj::emit_code(LIR_Assembler* masm) {
1010   masm->emit_alloc_obj(this);
1011   masm->append_code_stub(stub());
1012 }
1013 
1014 void LIR_OpBranch::emit_code(LIR_Assembler* masm) {
1015   masm->emit_opBranch(this);
1016   if (stub()) {
1017     masm->append_code_stub(stub());
1018   }
1019 }
1020 
1021 void LIR_OpConvert::emit_code(LIR_Assembler* masm) {
1022   masm->emit_opConvert(this);
1023   if (stub() != NULL) {
1024     masm->append_code_stub(stub());
1025   }
1026 }
1027 
1028 void LIR_Op2::emit_code(LIR_Assembler* masm) {
1029   masm->emit_op2(this);
1030 }
1031 
1032 void LIR_OpAllocArray::emit_code(LIR_Assembler* masm) {
1033   masm->emit_alloc_array(this);
1034   masm->append_code_stub(stub());
1035 }
1036 
1037 void LIR_OpTypeCheck::emit_code(LIR_Assembler* masm) {
1038   masm->emit_opTypeCheck(this);
1039   if (stub()) {
1040     masm->append_code_stub(stub());
1041   }
1042 }
1043 
1044 void LIR_OpCompareAndSwap::emit_code(LIR_Assembler* masm) {
1045   masm->emit_compare_and_swap(this);
1046 }
1047 
1048 void LIR_Op3::emit_code(LIR_Assembler* masm) {
1049   masm->emit_op3(this);
1050 }
1051 
1052 void LIR_OpLock::emit_code(LIR_Assembler* masm) {
1053   masm->emit_lock(this);
1054   if (stub()) {
1055     masm->append_code_stub(stub());
1056   }
1057 }
1058 
1059 void LIR_OpLoadKlass::emit_code(LIR_Assembler* masm) {
1060   masm->emit_load_klass(this);
1061 }
1062 
1063 #ifdef ASSERT
1064 void LIR_OpAssert::emit_code(LIR_Assembler* masm) {
1065   masm->emit_assert(this);
1066 }
1067 #endif
1068 
1069 void LIR_OpDelay::emit_code(LIR_Assembler* masm) {
1070   masm->emit_delay(this);
1071 }
1072 
1073 void LIR_OpProfileCall::emit_code(LIR_Assembler* masm) {
1074   masm->emit_profile_call(this);
1075 }
1076 
1077 void LIR_OpProfileType::emit_code(LIR_Assembler* masm) {
1078   masm->emit_profile_type(this);
1079 }
1080 
1081 // LIR_List
1082 LIR_List::LIR_List(Compilation* compilation, BlockBegin* block)
1083   : _operations(8)
1084   , _compilation(compilation)
1085 #ifndef PRODUCT
1086   , _block(block)
1087 #endif
1088 #ifdef ASSERT
1089   , _file(NULL)
1090   , _line(0)
1091 #endif
1092 { }
1093 
1094 
1095 #ifdef ASSERT
1096 void LIR_List::set_file_and_line(const char * file, int line) {
1097   const char * f = strrchr(file, '/');
1098   if (f == NULL) f = strrchr(file, '\\');
1099   if (f == NULL) {
1100     f = file;
1101   } else {
1102     f++;
1103   }
1104   _file = f;
1105   _line = line;
1106 }
1107 #endif
1108 
1109 
1110 void LIR_List::append(LIR_InsertionBuffer* buffer) {
1111   assert(this == buffer->lir_list(), "wrong lir list");
1112   const int n = _operations.length();
1113 
1114   if (buffer->number_of_ops() > 0) {
1115     // increase size of instructions list
1116     _operations.at_grow(n + buffer->number_of_ops() - 1, NULL);
1117     // insert ops from buffer into instructions list
1118     int op_index = buffer->number_of_ops() - 1;
1119     int ip_index = buffer->number_of_insertion_points() - 1;
1120     int from_index = n - 1;
1121     int to_index = _operations.length() - 1;
1122     for (; ip_index >= 0; ip_index --) {
1123       int index = buffer->index_at(ip_index);
1124       // make room after insertion point
1125       while (index < from_index) {
1126         _operations.at_put(to_index --, _operations.at(from_index --));
1127       }
1128       // insert ops from buffer
1129       for (int i = buffer->count_at(ip_index); i > 0; i --) {
1130         _operations.at_put(to_index --, buffer->op_at(op_index --));
1131       }
1132     }
1133   }
1134 
1135   buffer->finish();
1136 }
1137 
1138 
1139 void LIR_List::oop2reg_patch(jobject o, LIR_Opr reg, CodeEmitInfo* info) {
1140   assert(reg->type() == T_OBJECT, "bad reg");
1141   append(new LIR_Op1(lir_move, LIR_OprFact::oopConst(o),  reg, T_OBJECT, lir_patch_normal, info));
1142 }
1143 
1144 void LIR_List::klass2reg_patch(Metadata* o, LIR_Opr reg, CodeEmitInfo* info) {
1145   assert(reg->type() == T_METADATA, "bad reg");
1146   append(new LIR_Op1(lir_move, LIR_OprFact::metadataConst(o), reg, T_METADATA, lir_patch_normal, info));
1147 }
1148 
1149 void LIR_List::load(LIR_Address* addr, LIR_Opr src, CodeEmitInfo* info, LIR_PatchCode patch_code) {
1150   append(new LIR_Op1(
1151             lir_move,
1152             LIR_OprFact::address(addr),
1153             src,
1154             addr->type(),
1155             patch_code,
1156             info));
1157 }
1158 
1159 
1160 void LIR_List::volatile_load_mem_reg(LIR_Address* address, LIR_Opr dst, CodeEmitInfo* info, LIR_PatchCode patch_code) {
1161   append(new LIR_Op1(
1162             lir_move,
1163             LIR_OprFact::address(address),
1164             dst,
1165             address->type(),
1166             patch_code,
1167             info, lir_move_volatile));
1168 }
1169 
1170 void LIR_List::volatile_load_unsafe_reg(LIR_Opr base, LIR_Opr offset, LIR_Opr dst, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code) {
1171   append(new LIR_Op1(
1172             lir_move,
1173             LIR_OprFact::address(new LIR_Address(base, offset, type)),
1174             dst,
1175             type,
1176             patch_code,
1177             info, lir_move_volatile));
1178 }
1179 
1180 
1181 void LIR_List::store_mem_int(jint v, LIR_Opr base, int offset_in_bytes, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code) {
1182   append(new LIR_Op1(
1183             lir_move,
1184             LIR_OprFact::intConst(v),
1185             LIR_OprFact::address(new LIR_Address(base, offset_in_bytes, type)),
1186             type,
1187             patch_code,
1188             info));
1189 }
1190 
1191 
1192 void LIR_List::store_mem_oop(jobject o, LIR_Opr base, int offset_in_bytes, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code) {
1193   append(new LIR_Op1(
1194             lir_move,
1195             LIR_OprFact::oopConst(o),
1196             LIR_OprFact::address(new LIR_Address(base, offset_in_bytes, type)),
1197             type,
1198             patch_code,
1199             info));
1200 }
1201 
1202 
1203 void LIR_List::store(LIR_Opr src, LIR_Address* addr, CodeEmitInfo* info, LIR_PatchCode patch_code) {
1204   append(new LIR_Op1(
1205             lir_move,
1206             src,
1207             LIR_OprFact::address(addr),
1208             addr->type(),
1209             patch_code,
1210             info));
1211 }
1212 
1213 
1214 void LIR_List::volatile_store_mem_reg(LIR_Opr src, LIR_Address* addr, CodeEmitInfo* info, LIR_PatchCode patch_code) {
1215   append(new LIR_Op1(
1216             lir_move,
1217             src,
1218             LIR_OprFact::address(addr),
1219             addr->type(),
1220             patch_code,
1221             info,
1222             lir_move_volatile));
1223 }
1224 
1225 void LIR_List::volatile_store_unsafe_reg(LIR_Opr src, LIR_Opr base, LIR_Opr offset, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code) {
1226   append(new LIR_Op1(
1227             lir_move,
1228             src,
1229             LIR_OprFact::address(new LIR_Address(base, offset, type)),
1230             type,
1231             patch_code,
1232             info, lir_move_volatile));
1233 }
1234 
1235 
1236 void LIR_List::idiv(LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info) {
1237   append(new LIR_Op3(
1238                     lir_idiv,
1239                     left,
1240                     right,
1241                     tmp,
1242                     res,
1243                     info));
1244 }
1245 
1246 
1247 void LIR_List::idiv(LIR_Opr left, int right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info) {
1248   append(new LIR_Op3(
1249                     lir_idiv,
1250                     left,
1251                     LIR_OprFact::intConst(right),
1252                     tmp,
1253                     res,
1254                     info));
1255 }
1256 
1257 
1258 void LIR_List::irem(LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info) {
1259   append(new LIR_Op3(
1260                     lir_irem,
1261                     left,
1262                     right,
1263                     tmp,
1264                     res,
1265                     info));
1266 }
1267 
1268 
1269 void LIR_List::irem(LIR_Opr left, int right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info) {
1270   append(new LIR_Op3(
1271                     lir_irem,
1272                     left,
1273                     LIR_OprFact::intConst(right),
1274                     tmp,
1275                     res,
1276                     info));
1277 }
1278 
1279 
1280 void LIR_List::cmp_mem_int(LIR_Condition condition, LIR_Opr base, int disp, int c, CodeEmitInfo* info) {
1281   append(new LIR_Op2(
1282                     lir_cmp,
1283                     condition,
1284                     LIR_OprFact::address(new LIR_Address(base, disp, T_INT)),
1285                     LIR_OprFact::intConst(c),
1286                     info));
1287 }
1288 
1289 
1290 void LIR_List::cmp_reg_mem(LIR_Condition condition, LIR_Opr reg, LIR_Address* addr, CodeEmitInfo* info) {
1291   append(new LIR_Op2(
1292                     lir_cmp,
1293                     condition,
1294                     reg,
1295                     LIR_OprFact::address(addr),
1296                     info));
1297 }
1298 
1299 void LIR_List::allocate_object(LIR_Opr dst, LIR_Opr t1, LIR_Opr t2, LIR_Opr t3, LIR_Opr t4,
1300                                int header_size, int object_size, LIR_Opr klass, bool init_check, CodeStub* stub) {
1301   append(new LIR_OpAllocObj(
1302                            klass,
1303                            dst,
1304                            t1,
1305                            t2,
1306                            t3,
1307                            t4,
1308                            header_size,
1309                            object_size,
1310                            init_check,
1311                            stub));
1312 }
1313 
1314 void LIR_List::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) {
1315   append(new LIR_OpAllocArray(
1316                            klass,
1317                            len,
1318                            dst,
1319                            t1,
1320                            t2,
1321                            t3,
1322                            t4,
1323                            type,
1324                            stub));
1325 }
1326 
1327 void LIR_List::shift_left(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp) {
1328  append(new LIR_Op2(
1329                     lir_shl,
1330                     value,
1331                     count,
1332                     dst,
1333                     tmp));
1334 }
1335 
1336 void LIR_List::shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp) {
1337  append(new LIR_Op2(
1338                     lir_shr,
1339                     value,
1340                     count,
1341                     dst,
1342                     tmp));
1343 }
1344 
1345 
1346 void LIR_List::unsigned_shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp) {
1347  append(new LIR_Op2(
1348                     lir_ushr,
1349                     value,
1350                     count,
1351                     dst,
1352                     tmp));
1353 }
1354 
1355 void LIR_List::fcmp2int(LIR_Opr left, LIR_Opr right, LIR_Opr dst, bool is_unordered_less) {
1356   append(new LIR_Op2(is_unordered_less ? lir_ucmp_fd2i : lir_cmp_fd2i,
1357                      left,
1358                      right,
1359                      dst));
1360 }
1361 
1362 void LIR_List::lock_object(LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub, CodeEmitInfo* info) {
1363   append(new LIR_OpLock(
1364                     lir_lock,
1365                     hdr,
1366                     obj,
1367                     lock,
1368                     scratch,
1369                     stub,
1370                     info));
1371 }
1372 
1373 void LIR_List::unlock_object(LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub) {
1374   append(new LIR_OpLock(
1375                     lir_unlock,
1376                     hdr,
1377                     obj,
1378                     lock,
1379                     scratch,
1380                     stub,
1381                     NULL));
1382 }
1383 
1384 
1385 void check_LIR() {
1386   // cannot do the proper checking as PRODUCT and other modes return different results
1387   // guarantee(sizeof(LIR_Opr) == wordSize, "may not have a v-table");
1388 }
1389 
1390 
1391 
1392 void LIR_List::checkcast (LIR_Opr result, LIR_Opr object, ciKlass* klass,
1393                           LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, bool fast_check,
1394                           CodeEmitInfo* info_for_exception, CodeEmitInfo* info_for_patch, CodeStub* stub,
1395                           ciMethod* profiled_method, int profiled_bci) {
1396   LIR_OpTypeCheck* c = new LIR_OpTypeCheck(lir_checkcast, result, object, klass,
1397                                            tmp1, tmp2, tmp3, fast_check, info_for_exception, info_for_patch, stub);
1398   if (profiled_method != NULL) {
1399     c->set_profiled_method(profiled_method);
1400     c->set_profiled_bci(profiled_bci);
1401     c->set_should_profile(true);
1402   }
1403   append(c);
1404 }
1405 
1406 void LIR_List::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) {
1407   LIR_OpTypeCheck* c = new LIR_OpTypeCheck(lir_instanceof, result, object, klass, tmp1, tmp2, tmp3, fast_check, NULL, info_for_patch, NULL);
1408   if (profiled_method != NULL) {
1409     c->set_profiled_method(profiled_method);
1410     c->set_profiled_bci(profiled_bci);
1411     c->set_should_profile(true);
1412   }
1413   append(c);
1414 }
1415 
1416 
1417 void LIR_List::store_check(LIR_Opr object, LIR_Opr array, LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3,
1418                            CodeEmitInfo* info_for_exception, ciMethod* profiled_method, int profiled_bci) {
1419   LIR_OpTypeCheck* c = new LIR_OpTypeCheck(lir_store_check, object, array, tmp1, tmp2, tmp3, info_for_exception);
1420   if (profiled_method != NULL) {
1421     c->set_profiled_method(profiled_method);
1422     c->set_profiled_bci(profiled_bci);
1423     c->set_should_profile(true);
1424   }
1425   append(c);
1426 }
1427 
1428 void LIR_List::null_check(LIR_Opr opr, CodeEmitInfo* info, bool deoptimize_on_null) {
1429   if (deoptimize_on_null) {
1430     // Emit an explicit null check and deoptimize if opr is null
1431     CodeStub* deopt = new DeoptimizeStub(info, Deoptimization::Reason_null_check, Deoptimization::Action_none);
1432     cmp(lir_cond_equal, opr, LIR_OprFact::oopConst(NULL));
1433     branch(lir_cond_equal, deopt);
1434   } else {
1435     // Emit an implicit null check
1436     append(new LIR_Op1(lir_null_check, opr, info));
1437   }
1438 }
1439 
1440 void LIR_List::cas_long(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
1441                         LIR_Opr t1, LIR_Opr t2, LIR_Opr result) {
1442   append(new LIR_OpCompareAndSwap(lir_cas_long, addr, cmp_value, new_value, t1, t2, result));
1443 }
1444 
1445 void LIR_List::cas_obj(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
1446                        LIR_Opr t1, LIR_Opr t2, LIR_Opr result) {
1447   append(new LIR_OpCompareAndSwap(lir_cas_obj, addr, cmp_value, new_value, t1, t2, result));
1448 }
1449 
1450 void LIR_List::cas_int(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
1451                        LIR_Opr t1, LIR_Opr t2, LIR_Opr result) {
1452   append(new LIR_OpCompareAndSwap(lir_cas_int, addr, cmp_value, new_value, t1, t2, result));
1453 }
1454 
1455 
1456 #ifdef PRODUCT
1457 
1458 void print_LIR(BlockList* blocks) {
1459 }
1460 
1461 #else
1462 // LIR_Opr
1463 void LIR_Opr::print() const {
1464   print(tty);
1465 }
1466 
1467 void LIR_Opr::print(outputStream* out) const {
1468   if (is_illegal()) {
1469     return;
1470   }
1471 
1472   out->print("[");
1473   if (is_pointer()) {
1474     pointer()->print_value_on(out);
1475   } else if (is_single_stack()) {
1476     out->print("stack:%d", single_stack_ix());
1477   } else if (is_double_stack()) {
1478     out->print("dbl_stack:%d",double_stack_ix());
1479   } else if (is_virtual()) {
1480     out->print("R%d", vreg_number());
1481   } else if (is_single_cpu()) {
1482     out->print("%s", as_register()->name());
1483   } else if (is_double_cpu()) {
1484     out->print("%s", as_register_hi()->name());
1485     out->print("%s", as_register_lo()->name());
1486 #if defined(X86)
1487   } else if (is_single_xmm()) {
1488     out->print("%s", as_xmm_float_reg()->name());
1489   } else if (is_double_xmm()) {
1490     out->print("%s", as_xmm_double_reg()->name());
1491   } else if (is_single_fpu()) {
1492     out->print("fpu%d", fpu_regnr());
1493   } else if (is_double_fpu()) {
1494     out->print("fpu%d", fpu_regnrLo());
1495 #elif defined(AARCH64)
1496   } else if (is_single_fpu()) {
1497     out->print("fpu%d", fpu_regnr());
1498   } else if (is_double_fpu()) {
1499     out->print("fpu%d", fpu_regnrLo());
1500 #elif defined(ARM)
1501   } else if (is_single_fpu()) {
1502     out->print("s%d", fpu_regnr());
1503   } else if (is_double_fpu()) {
1504     out->print("d%d", fpu_regnrLo() >> 1);
1505 #else
1506   } else if (is_single_fpu()) {
1507     out->print("%s", as_float_reg()->name());
1508   } else if (is_double_fpu()) {
1509     out->print("%s", as_double_reg()->name());
1510 #endif
1511 
1512   } else if (is_illegal()) {
1513     out->print("-");
1514   } else {
1515     out->print("Unknown Operand");
1516   }
1517   if (!is_illegal()) {
1518     out->print("|%c", type_char());
1519   }
1520   if (is_register() && is_last_use()) {
1521     out->print("(last_use)");
1522   }
1523   out->print("]");
1524 }
1525 
1526 
1527 // LIR_Address
1528 void LIR_Const::print_value_on(outputStream* out) const {
1529   switch (type()) {
1530     case T_ADDRESS:out->print("address:%d",as_jint());          break;
1531     case T_INT:    out->print("int:%d",   as_jint());           break;
1532     case T_LONG:   out->print("lng:" JLONG_FORMAT, as_jlong()); break;
1533     case T_FLOAT:  out->print("flt:%f",   as_jfloat());         break;
1534     case T_DOUBLE: out->print("dbl:%f",   as_jdouble());        break;
1535     case T_OBJECT: out->print("obj:" INTPTR_FORMAT, p2i(as_jobject()));        break;
1536     case T_METADATA: out->print("metadata:" INTPTR_FORMAT, p2i(as_metadata()));break;
1537     default:       out->print("%3d:0x" UINT64_FORMAT_X, type(), (uint64_t)as_jlong()); break;
1538   }
1539 }
1540 
1541 // LIR_Address
1542 void LIR_Address::print_value_on(outputStream* out) const {
1543   out->print("Base:"); _base->print(out);
1544   if (!_index->is_illegal()) {
1545     out->print(" Index:"); _index->print(out);
1546     switch (scale()) {
1547     case times_1: break;
1548     case times_2: out->print(" * 2"); break;
1549     case times_4: out->print(" * 4"); break;
1550     case times_8: out->print(" * 8"); break;
1551     }
1552   }
1553   out->print(" Disp: " INTX_FORMAT, _disp);
1554 }
1555 
1556 // debug output of block header without InstructionPrinter
1557 //       (because phi functions are not necessary for LIR)
1558 static void print_block(BlockBegin* x) {
1559   // print block id
1560   BlockEnd* end = x->end();
1561   tty->print("B%d ", x->block_id());
1562 
1563   // print flags
1564   if (x->is_set(BlockBegin::std_entry_flag))               tty->print("std ");
1565   if (x->is_set(BlockBegin::osr_entry_flag))               tty->print("osr ");
1566   if (x->is_set(BlockBegin::exception_entry_flag))         tty->print("ex ");
1567   if (x->is_set(BlockBegin::subroutine_entry_flag))        tty->print("jsr ");
1568   if (x->is_set(BlockBegin::backward_branch_target_flag))  tty->print("bb ");
1569   if (x->is_set(BlockBegin::linear_scan_loop_header_flag)) tty->print("lh ");
1570   if (x->is_set(BlockBegin::linear_scan_loop_end_flag))    tty->print("le ");
1571 
1572   // print block bci range
1573   tty->print("[%d, %d] ", x->bci(), (end == NULL ? -1 : end->printable_bci()));
1574 
1575   // print predecessors and successors
1576   if (x->number_of_preds() > 0) {
1577     tty->print("preds: ");
1578     for (int i = 0; i < x->number_of_preds(); i ++) {
1579       tty->print("B%d ", x->pred_at(i)->block_id());
1580     }
1581   }
1582 
1583   if (end != NULL && x->number_of_sux() > 0) {
1584     tty->print("sux: ");
1585     for (int i = 0; i < x->number_of_sux(); i ++) {
1586       tty->print("B%d ", x->sux_at(i)->block_id());
1587     }
1588   }
1589 
1590   // print exception handlers
1591   if (x->number_of_exception_handlers() > 0) {
1592     tty->print("xhandler: ");
1593     for (int i = 0; i < x->number_of_exception_handlers();  i++) {
1594       tty->print("B%d ", x->exception_handler_at(i)->block_id());
1595     }
1596   }
1597 
1598   tty->cr();
1599 }
1600 
1601 void print_LIR(BlockList* blocks) {
1602   tty->print_cr("LIR:");
1603   int i;
1604   for (i = 0; i < blocks->length(); i++) {
1605     BlockBegin* bb = blocks->at(i);
1606     print_block(bb);
1607     tty->print("__id_Instruction___________________________________________"); tty->cr();
1608     bb->lir()->print_instructions();
1609   }
1610 }
1611 
1612 void LIR_List::print_instructions() {
1613   for (int i = 0; i < _operations.length(); i++) {
1614     _operations.at(i)->print(); tty->cr();
1615   }
1616   tty->cr();
1617 }
1618 
1619 // LIR_Ops printing routines
1620 // LIR_Op
1621 void LIR_Op::print_on(outputStream* out) const {
1622   if (id() != -1 || PrintCFGToFile) {
1623     out->print("%4d ", id());
1624   } else {
1625     out->print("     ");
1626   }
1627   out->print("%s ", name());
1628   print_instr(out);
1629   if (info() != NULL) out->print(" [bci:%d]", info()->stack()->bci());
1630 #ifdef ASSERT
1631   if (Verbose && _file != NULL) {
1632     out->print(" (%s:%d)", _file, _line);
1633   }
1634 #endif
1635 }
1636 
1637 const char * LIR_Op::name() const {
1638   const char* s = NULL;
1639   switch(code()) {
1640      // LIR_Op0
1641      case lir_membar:                s = "membar";        break;
1642      case lir_membar_acquire:        s = "membar_acquire"; break;
1643      case lir_membar_release:        s = "membar_release"; break;
1644      case lir_membar_loadload:       s = "membar_loadload";   break;
1645      case lir_membar_storestore:     s = "membar_storestore"; break;
1646      case lir_membar_loadstore:      s = "membar_loadstore";  break;
1647      case lir_membar_storeload:      s = "membar_storeload";  break;
1648      case lir_label:                 s = "label";         break;
1649      case lir_nop:                   s = "nop";           break;
1650      case lir_on_spin_wait:          s = "on_spin_wait";  break;
1651      case lir_std_entry:             s = "std_entry";     break;
1652      case lir_osr_entry:             s = "osr_entry";     break;
1653      case lir_fpop_raw:              s = "fpop_raw";      break;
1654      case lir_breakpoint:            s = "breakpoint";    break;
1655      case lir_get_thread:            s = "get_thread";    break;
1656      // LIR_Op1
1657      case lir_fxch:                  s = "fxch";          break;
1658      case lir_fld:                   s = "fld";           break;
1659      case lir_push:                  s = "push";          break;
1660      case lir_pop:                   s = "pop";           break;
1661      case lir_null_check:            s = "null_check";    break;
1662      case lir_return:                s = "return";        break;
1663      case lir_safepoint:             s = "safepoint";     break;
1664      case lir_leal:                  s = "leal";          break;
1665      case lir_branch:                s = "branch";        break;
1666      case lir_cond_float_branch:     s = "flt_cond_br";   break;
1667      case lir_move:                  s = "move";          break;
1668      case lir_roundfp:               s = "roundfp";       break;
1669      case lir_rtcall:                s = "rtcall";        break;
1670      case lir_throw:                 s = "throw";         break;
1671      case lir_unwind:                s = "unwind";        break;
1672      case lir_convert:               s = "convert";       break;
1673      case lir_alloc_object:          s = "alloc_obj";     break;
1674      case lir_monaddr:               s = "mon_addr";      break;
1675      // LIR_Op2
1676      case lir_cmp:                   s = "cmp";           break;
1677      case lir_cmp_l2i:               s = "cmp_l2i";       break;
1678      case lir_ucmp_fd2i:             s = "ucomp_fd2i";    break;
1679      case lir_cmp_fd2i:              s = "comp_fd2i";     break;
1680      case lir_cmove:                 s = "cmove";         break;
1681      case lir_add:                   s = "add";           break;
1682      case lir_sub:                   s = "sub";           break;
1683      case lir_mul:                   s = "mul";           break;
1684      case lir_div:                   s = "div";           break;
1685      case lir_rem:                   s = "rem";           break;
1686      case lir_abs:                   s = "abs";           break;
1687      case lir_neg:                   s = "neg";           break;
1688      case lir_sqrt:                  s = "sqrt";          break;
1689      case lir_logic_and:             s = "logic_and";     break;
1690      case lir_logic_or:              s = "logic_or";      break;
1691      case lir_logic_xor:             s = "logic_xor";     break;
1692      case lir_shl:                   s = "shift_left";    break;
1693      case lir_shr:                   s = "shift_right";   break;
1694      case lir_ushr:                  s = "ushift_right";  break;
1695      case lir_alloc_array:           s = "alloc_array";   break;
1696      case lir_xadd:                  s = "xadd";          break;
1697      case lir_xchg:                  s = "xchg";          break;
1698      // LIR_Op3
1699      case lir_idiv:                  s = "idiv";          break;
1700      case lir_irem:                  s = "irem";          break;
1701      case lir_fmad:                  s = "fmad";          break;
1702      case lir_fmaf:                  s = "fmaf";          break;
1703      // LIR_OpJavaCall
1704      case lir_static_call:           s = "static";        break;
1705      case lir_optvirtual_call:       s = "optvirtual";    break;
1706      case lir_icvirtual_call:        s = "icvirtual";     break;
1707      case lir_dynamic_call:          s = "dynamic";       break;
1708      // LIR_OpArrayCopy
1709      case lir_arraycopy:             s = "arraycopy";     break;
1710      // LIR_OpUpdateCRC32
1711      case lir_updatecrc32:           s = "updatecrc32";   break;
1712      // LIR_OpLock
1713      case lir_lock:                  s = "lock";          break;
1714      case lir_unlock:                s = "unlock";        break;
1715      // LIR_OpDelay
1716      case lir_delay_slot:            s = "delay";         break;
1717      // LIR_OpTypeCheck
1718      case lir_instanceof:            s = "instanceof";    break;
1719      case lir_checkcast:             s = "checkcast";     break;
1720      case lir_store_check:           s = "store_check";   break;
1721      // LIR_OpCompareAndSwap
1722      case lir_cas_long:              s = "cas_long";      break;
1723      case lir_cas_obj:               s = "cas_obj";      break;
1724      case lir_cas_int:               s = "cas_int";      break;
1725      // LIR_OpProfileCall
1726      case lir_profile_call:          s = "profile_call";  break;
1727      // LIR_OpProfileType
1728      case lir_profile_type:          s = "profile_type";  break;
1729      // LIR_OpAssert
1730 #ifdef ASSERT
1731      case lir_assert:                s = "assert";        break;
1732 #endif
1733      case lir_none:                  ShouldNotReachHere();break;
1734     default:                         s = "illegal_op";    break;
1735   }
1736   return s;
1737 }
1738 
1739 // LIR_OpJavaCall
1740 void LIR_OpJavaCall::print_instr(outputStream* out) const {
1741   out->print("call: ");
1742   out->print("[addr: " INTPTR_FORMAT "]", p2i(address()));
1743   if (receiver()->is_valid()) {
1744     out->print(" [recv: ");   receiver()->print(out);   out->print("]");
1745   }
1746   if (result_opr()->is_valid()) {
1747     out->print(" [result: "); result_opr()->print(out); out->print("]");
1748   }
1749 }
1750 
1751 // LIR_OpLabel
1752 void LIR_OpLabel::print_instr(outputStream* out) const {
1753   out->print("[label:" INTPTR_FORMAT "]", p2i(_label));
1754 }
1755 
1756 // LIR_OpArrayCopy
1757 void LIR_OpArrayCopy::print_instr(outputStream* out) const {
1758   src()->print(out);     out->print(" ");
1759   src_pos()->print(out); out->print(" ");
1760   dst()->print(out);     out->print(" ");
1761   dst_pos()->print(out); out->print(" ");
1762   length()->print(out);  out->print(" ");
1763   tmp()->print(out);     out->print(" ");
1764 }
1765 
1766 // LIR_OpUpdateCRC32
1767 void LIR_OpUpdateCRC32::print_instr(outputStream* out) const {
1768   crc()->print(out);     out->print(" ");
1769   val()->print(out);     out->print(" ");
1770   result_opr()->print(out); out->print(" ");
1771 }
1772 
1773 // LIR_OpCompareAndSwap
1774 void LIR_OpCompareAndSwap::print_instr(outputStream* out) const {
1775   addr()->print(out);      out->print(" ");
1776   cmp_value()->print(out); out->print(" ");
1777   new_value()->print(out); out->print(" ");
1778   tmp1()->print(out);      out->print(" ");
1779   tmp2()->print(out);      out->print(" ");
1780 
1781 }
1782 
1783 // LIR_Op0
1784 void LIR_Op0::print_instr(outputStream* out) const {
1785   result_opr()->print(out);
1786 }
1787 
1788 // LIR_Op1
1789 const char * LIR_Op1::name() const {
1790   if (code() == lir_move) {
1791     switch (move_kind()) {
1792     case lir_move_normal:
1793       return "move";
1794     case lir_move_volatile:
1795       return "volatile_move";
1796     case lir_move_wide:
1797       return "wide_move";
1798     default:
1799       ShouldNotReachHere();
1800     return "illegal_op";
1801     }
1802   } else {
1803     return LIR_Op::name();
1804   }
1805 }
1806 
1807 
1808 void LIR_Op1::print_instr(outputStream* out) const {
1809   _opr->print(out);         out->print(" ");
1810   result_opr()->print(out); out->print(" ");
1811   print_patch_code(out, patch_code());
1812 }
1813 
1814 
1815 // LIR_Op1
1816 void LIR_OpRTCall::print_instr(outputStream* out) const {
1817   intx a = (intx)addr();
1818   out->print("%s", Runtime1::name_for_address(addr()));
1819   out->print(" ");
1820   tmp()->print(out);
1821 }
1822 
1823 void LIR_Op1::print_patch_code(outputStream* out, LIR_PatchCode code) {
1824   switch(code) {
1825     case lir_patch_none:                                 break;
1826     case lir_patch_low:    out->print("[patch_low]");    break;
1827     case lir_patch_high:   out->print("[patch_high]");   break;
1828     case lir_patch_normal: out->print("[patch_normal]"); break;
1829     default: ShouldNotReachHere();
1830   }
1831 }
1832 
1833 // LIR_OpBranch
1834 void LIR_OpBranch::print_instr(outputStream* out) const {
1835   print_condition(out, cond());             out->print(" ");
1836   if (block() != NULL) {
1837     out->print("[B%d] ", block()->block_id());
1838   } else if (stub() != NULL) {
1839     out->print("[");
1840     stub()->print_name(out);
1841     out->print(": " INTPTR_FORMAT "]", p2i(stub()));
1842     if (stub()->info() != NULL) out->print(" [bci:%d]", stub()->info()->stack()->bci());
1843   } else {
1844     out->print("[label:" INTPTR_FORMAT "] ", p2i(label()));
1845   }
1846   if (ublock() != NULL) {
1847     out->print("unordered: [B%d] ", ublock()->block_id());
1848   }
1849 }
1850 
1851 void LIR_Op::print_condition(outputStream* out, LIR_Condition cond) {
1852   switch(cond) {
1853     case lir_cond_equal:           out->print("[EQ]");      break;
1854     case lir_cond_notEqual:        out->print("[NE]");      break;
1855     case lir_cond_less:            out->print("[LT]");      break;
1856     case lir_cond_lessEqual:       out->print("[LE]");      break;
1857     case lir_cond_greaterEqual:    out->print("[GE]");      break;
1858     case lir_cond_greater:         out->print("[GT]");      break;
1859     case lir_cond_belowEqual:      out->print("[BE]");      break;
1860     case lir_cond_aboveEqual:      out->print("[AE]");      break;
1861     case lir_cond_always:          out->print("[AL]");      break;
1862     default:                       out->print("[%d]",cond); break;
1863   }
1864 }
1865 
1866 // LIR_OpConvert
1867 void LIR_OpConvert::print_instr(outputStream* out) const {
1868   print_bytecode(out, bytecode());
1869   in_opr()->print(out);                  out->print(" ");
1870   result_opr()->print(out);              out->print(" ");
1871 }
1872 
1873 void LIR_OpConvert::print_bytecode(outputStream* out, Bytecodes::Code code) {
1874   switch(code) {
1875     case Bytecodes::_d2f: out->print("[d2f] "); break;
1876     case Bytecodes::_d2i: out->print("[d2i] "); break;
1877     case Bytecodes::_d2l: out->print("[d2l] "); break;
1878     case Bytecodes::_f2d: out->print("[f2d] "); break;
1879     case Bytecodes::_f2i: out->print("[f2i] "); break;
1880     case Bytecodes::_f2l: out->print("[f2l] "); break;
1881     case Bytecodes::_i2b: out->print("[i2b] "); break;
1882     case Bytecodes::_i2c: out->print("[i2c] "); break;
1883     case Bytecodes::_i2d: out->print("[i2d] "); break;
1884     case Bytecodes::_i2f: out->print("[i2f] "); break;
1885     case Bytecodes::_i2l: out->print("[i2l] "); break;
1886     case Bytecodes::_i2s: out->print("[i2s] "); break;
1887     case Bytecodes::_l2i: out->print("[l2i] "); break;
1888     case Bytecodes::_l2f: out->print("[l2f] "); break;
1889     case Bytecodes::_l2d: out->print("[l2d] "); break;
1890     default:
1891       out->print("[?%d]",code);
1892     break;
1893   }
1894 }
1895 
1896 void LIR_OpAllocObj::print_instr(outputStream* out) const {
1897   klass()->print(out);                      out->print(" ");
1898   obj()->print(out);                        out->print(" ");
1899   tmp1()->print(out);                       out->print(" ");
1900   tmp2()->print(out);                       out->print(" ");
1901   tmp3()->print(out);                       out->print(" ");
1902   tmp4()->print(out);                       out->print(" ");
1903   out->print("[hdr:%d]", header_size()); out->print(" ");
1904   out->print("[obj:%d]", object_size()); out->print(" ");
1905   out->print("[lbl:" INTPTR_FORMAT "]", p2i(stub()->entry()));
1906 }
1907 
1908 void LIR_OpRoundFP::print_instr(outputStream* out) const {
1909   _opr->print(out);         out->print(" ");
1910   tmp()->print(out);        out->print(" ");
1911   result_opr()->print(out); out->print(" ");
1912 }
1913 
1914 // LIR_Op2
1915 void LIR_Op2::print_instr(outputStream* out) const {
1916   if (code() == lir_cmove || code() == lir_cmp) {
1917     print_condition(out, condition());         out->print(" ");
1918   }
1919   in_opr1()->print(out);    out->print(" ");
1920   in_opr2()->print(out);    out->print(" ");
1921   if (tmp1_opr()->is_valid()) { tmp1_opr()->print(out);    out->print(" "); }
1922   if (tmp2_opr()->is_valid()) { tmp2_opr()->print(out);    out->print(" "); }
1923   if (tmp3_opr()->is_valid()) { tmp3_opr()->print(out);    out->print(" "); }
1924   if (tmp4_opr()->is_valid()) { tmp4_opr()->print(out);    out->print(" "); }
1925   if (tmp5_opr()->is_valid()) { tmp5_opr()->print(out);    out->print(" "); }
1926   result_opr()->print(out);
1927 }
1928 
1929 void LIR_OpAllocArray::print_instr(outputStream* out) const {
1930   klass()->print(out);                   out->print(" ");
1931   len()->print(out);                     out->print(" ");
1932   obj()->print(out);                     out->print(" ");
1933   tmp1()->print(out);                    out->print(" ");
1934   tmp2()->print(out);                    out->print(" ");
1935   tmp3()->print(out);                    out->print(" ");
1936   tmp4()->print(out);                    out->print(" ");
1937   out->print("[type:0x%x]", type());     out->print(" ");
1938   out->print("[label:" INTPTR_FORMAT "]", p2i(stub()->entry()));
1939 }
1940 
1941 
1942 void LIR_OpTypeCheck::print_instr(outputStream* out) const {
1943   object()->print(out);                  out->print(" ");
1944   if (code() == lir_store_check) {
1945     array()->print(out);                 out->print(" ");
1946   }
1947   if (code() != lir_store_check) {
1948     klass()->print_name_on(out);         out->print(" ");
1949     if (fast_check())                 out->print("fast_check ");
1950   }
1951   tmp1()->print(out);                    out->print(" ");
1952   tmp2()->print(out);                    out->print(" ");
1953   tmp3()->print(out);                    out->print(" ");
1954   result_opr()->print(out);              out->print(" ");
1955   if (info_for_exception() != NULL) out->print(" [bci:%d]", info_for_exception()->stack()->bci());
1956 }
1957 
1958 
1959 // LIR_Op3
1960 void LIR_Op3::print_instr(outputStream* out) const {
1961   in_opr1()->print(out);    out->print(" ");
1962   in_opr2()->print(out);    out->print(" ");
1963   in_opr3()->print(out);    out->print(" ");
1964   result_opr()->print(out);
1965 }
1966 
1967 
1968 void LIR_OpLock::print_instr(outputStream* out) const {
1969   hdr_opr()->print(out);   out->print(" ");
1970   obj_opr()->print(out);   out->print(" ");
1971   lock_opr()->print(out);  out->print(" ");
1972   if (_scratch->is_valid()) {
1973     _scratch->print(out);  out->print(" ");
1974   }
1975   out->print("[lbl:" INTPTR_FORMAT "]", p2i(stub()->entry()));
1976 }
1977 
1978 void LIR_OpLoadKlass::print_instr(outputStream* out) const {
1979   obj()->print(out);        out->print(" ");
1980   result_opr()->print(out); out->print(" ");
1981 }
1982 
1983 #ifdef ASSERT
1984 void LIR_OpAssert::print_instr(outputStream* out) const {
1985   print_condition(out, condition()); out->print(" ");
1986   in_opr1()->print(out);             out->print(" ");
1987   in_opr2()->print(out);             out->print(", \"");
1988   out->print("%s", msg());          out->print("\"");
1989 }
1990 #endif
1991 
1992 
1993 void LIR_OpDelay::print_instr(outputStream* out) const {
1994   _op->print_on(out);
1995 }
1996 
1997 
1998 // LIR_OpProfileCall
1999 void LIR_OpProfileCall::print_instr(outputStream* out) const {
2000   profiled_method()->name()->print_symbol_on(out);
2001   out->print(".");
2002   profiled_method()->holder()->name()->print_symbol_on(out);
2003   out->print(" @ %d ", profiled_bci());
2004   mdo()->print(out);           out->print(" ");
2005   recv()->print(out);          out->print(" ");
2006   tmp1()->print(out);          out->print(" ");
2007 }
2008 
2009 // LIR_OpProfileType
2010 void LIR_OpProfileType::print_instr(outputStream* out) const {
2011   out->print("exact = ");
2012   if  (exact_klass() == NULL) {
2013     out->print("unknown");
2014   } else {
2015     exact_klass()->print_name_on(out);
2016   }
2017   out->print(" current = "); ciTypeEntries::print_ciklass(out, current_klass());
2018   out->print(" ");
2019   mdp()->print(out);          out->print(" ");
2020   obj()->print(out);          out->print(" ");
2021   tmp()->print(out);          out->print(" ");
2022 }
2023 
2024 #endif // PRODUCT
2025 
2026 // Implementation of LIR_InsertionBuffer
2027 
2028 void LIR_InsertionBuffer::append(int index, LIR_Op* op) {
2029   assert(_index_and_count.length() % 2 == 0, "must have a count for each index");
2030 
2031   int i = number_of_insertion_points() - 1;
2032   if (i < 0 || index_at(i) < index) {
2033     append_new(index, 1);
2034   } else {
2035     assert(index_at(i) == index, "can append LIR_Ops in ascending order only");
2036     assert(count_at(i) > 0, "check");
2037     set_count_at(i, count_at(i) + 1);
2038   }
2039   _ops.push(op);
2040 
2041   DEBUG_ONLY(verify());
2042 }
2043 
2044 #ifdef ASSERT
2045 void LIR_InsertionBuffer::verify() {
2046   int sum = 0;
2047   int prev_idx = -1;
2048 
2049   for (int i = 0; i < number_of_insertion_points(); i++) {
2050     assert(prev_idx < index_at(i), "index must be ordered ascending");
2051     sum += count_at(i);
2052   }
2053   assert(sum == number_of_ops(), "wrong total sum");
2054 }
2055 #endif