src/share/vm/c1/c1_InstructionPrinter.cpp

Fri, 06 May 2011 12:12:29 -0700

author
iveresov
date
Fri, 06 May 2011 12:12:29 -0700
changeset 2894
d4c1fbc3de95
parent 2486
403dc4c1d7f5
child 3592
701a83c86f28
permissions
-rw-r--r--

7042153: guarantee(x_compare_res != Constant::not_comparable) failed: incomparable constants in IfOp
Summary: Handle IfOps folding properly in case of unloaded constant oop arguments
Reviewed-by: kvn, never

     1 /*
     2  * Copyright (c) 1999, 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  */
    25 #include "precompiled.hpp"
    26 #include "c1/c1_InstructionPrinter.hpp"
    27 #include "c1/c1_ValueStack.hpp"
    28 #include "ci/ciArray.hpp"
    29 #include "ci/ciInstance.hpp"
    30 #include "ci/ciObject.hpp"
    33 #ifndef PRODUCT
    35 const char* InstructionPrinter::basic_type_name(BasicType type) {
    36   switch (type) {
    37     case T_BOOLEAN: return "boolean";
    38     case T_BYTE   : return "byte";
    39     case T_CHAR   : return "char";
    40     case T_SHORT  : return "short";
    41     case T_INT    : return "int";
    42     case T_LONG   : return "long";
    43     case T_FLOAT  : return "float";
    44     case T_DOUBLE : return "double";
    45     case T_ARRAY  : return "array";
    46     case T_OBJECT : return "object";
    47     default       : return "???";
    48   }
    49 }
    52 const char* InstructionPrinter::cond_name(If::Condition cond) {
    53   switch (cond) {
    54     case If::eql: return "==";
    55     case If::neq: return "!=";
    56     case If::lss: return "<";
    57     case If::leq: return "<=";
    58     case If::gtr: return ">";
    59     case If::geq: return ">=";
    60   }
    61   ShouldNotReachHere();
    62   return NULL;
    63 }
    66 const char* InstructionPrinter::op_name(Bytecodes::Code op) {
    67   switch (op) {
    68     // arithmetic ops
    69     case Bytecodes::_iadd : // fall through
    70     case Bytecodes::_ladd : // fall through
    71     case Bytecodes::_fadd : // fall through
    72     case Bytecodes::_dadd : return "+";
    73     case Bytecodes::_isub : // fall through
    74     case Bytecodes::_lsub : // fall through
    75     case Bytecodes::_fsub : // fall through
    76     case Bytecodes::_dsub : return "-";
    77     case Bytecodes::_imul : // fall through
    78     case Bytecodes::_lmul : // fall through
    79     case Bytecodes::_fmul : // fall through
    80     case Bytecodes::_dmul : return "*";
    81     case Bytecodes::_idiv : // fall through
    82     case Bytecodes::_ldiv : // fall through
    83     case Bytecodes::_fdiv : // fall through
    84     case Bytecodes::_ddiv : return "/";
    85     case Bytecodes::_irem : // fall through
    86     case Bytecodes::_lrem : // fall through
    87     case Bytecodes::_frem : // fall through
    88     case Bytecodes::_drem : return "%";
    89     // shift ops
    90     case Bytecodes::_ishl : // fall through
    91     case Bytecodes::_lshl : return "<<";
    92     case Bytecodes::_ishr : // fall through
    93     case Bytecodes::_lshr : return ">>";
    94     case Bytecodes::_iushr: // fall through
    95     case Bytecodes::_lushr: return ">>>";
    96     // logic ops
    97     case Bytecodes::_iand : // fall through
    98     case Bytecodes::_land : return "&";
    99     case Bytecodes::_ior  : // fall through
   100     case Bytecodes::_lor  : return "|";
   101     case Bytecodes::_ixor : // fall through
   102     case Bytecodes::_lxor : return "^";
   103   }
   104   return Bytecodes::name(op);
   105 }
   108 bool InstructionPrinter::is_illegal_phi(Value v) {
   109   Phi* phi = v ? v->as_Phi() : NULL;
   110   if (phi && phi->is_illegal()) {
   111     return true;
   112   }
   113   return false;
   114 }
   117 bool InstructionPrinter::is_phi_of_block(Value v, BlockBegin* b) {
   118   Phi* phi = v ? v->as_Phi() : NULL;
   119   return phi && phi->block() == b;
   120 }
   123 void InstructionPrinter::print_klass(ciKlass* klass) {
   124   klass->name()->print_symbol_on(output());
   125 }
   128 void InstructionPrinter::print_object(Value obj) {
   129   ValueType* type = obj->type();
   130   if (type->as_ObjectConstant() != NULL) {
   131     ciObject* value = type->as_ObjectConstant()->value();
   132     if (value->is_null_object()) {
   133       output()->print("null");
   134     } else if (!value->is_loaded()) {
   135       output()->print("<unloaded object " PTR_FORMAT ">", value);
   136     } else if (value->is_method()) {
   137       ciMethod* m = (ciMethod*)value;
   138       output()->print("<method %s.%s>", m->holder()->name()->as_utf8(), m->name()->as_utf8());
   139     } else {
   140       output()->print("<object " PTR_FORMAT ">", value->constant_encoding());
   141     }
   142   } else if (type->as_InstanceConstant() != NULL) {
   143     ciInstance* value = type->as_InstanceConstant()->value();
   144     if (value->is_loaded()) {
   145       output()->print("<instance " PTR_FORMAT ">", value->constant_encoding());
   146     } else {
   147       output()->print("<unloaded instance " PTR_FORMAT ">", value);
   148     }
   149   } else if (type->as_ArrayConstant() != NULL) {
   150     output()->print("<array " PTR_FORMAT ">", type->as_ArrayConstant()->value()->constant_encoding());
   151   } else if (type->as_ClassConstant() != NULL) {
   152     ciInstanceKlass* klass = type->as_ClassConstant()->value();
   153     if (!klass->is_loaded()) {
   154       output()->print("<unloaded> ");
   155     }
   156     output()->print("class ");
   157     print_klass(klass);
   158   } else {
   159     output()->print("???");
   160   }
   161 }
   164 void InstructionPrinter::print_temp(Value value) {
   165   output()->print("%c%d", value->type()->tchar(), value->id());
   166 }
   169 void InstructionPrinter::print_field(AccessField* field) {
   170   print_value(field->obj());
   171   output()->print("._%d", field->offset());
   172 }
   175 void InstructionPrinter::print_indexed(AccessIndexed* indexed) {
   176   print_value(indexed->array());
   177   output()->put('[');
   178   print_value(indexed->index());
   179   output()->put(']');
   180 }
   183 void InstructionPrinter::print_monitor(AccessMonitor* monitor) {
   184   output()->print("monitor[%d](", monitor->monitor_no());
   185   print_value(monitor->obj());
   186   output()->put(')');
   187 }
   190 void InstructionPrinter::print_op2(Op2* instr) {
   191   print_value(instr->x());
   192   output()->print(" %s ", op_name(instr->op()));
   193   print_value(instr->y());
   194 }
   197 void InstructionPrinter::print_value(Value value) {
   198   if (value == NULL) {
   199     output()->print("NULL");
   200   } else {
   201     print_temp(value);
   202   }
   203 }
   206 void InstructionPrinter::print_instr(Instruction* instr) {
   207   instr->visit(this);
   208 }
   211 void InstructionPrinter::print_stack(ValueStack* stack) {
   212   int start_position = output()->position();
   213   if (stack->stack_is_empty()) {
   214     output()->print("empty stack");
   215   } else {
   216     output()->print("stack [");
   217     for (int i = 0; i < stack->stack_size();) {
   218       if (i > 0) output()->print(", ");
   219       output()->print("%d:", i);
   220       Value value = stack->stack_at_inc(i);
   221       print_value(value);
   222       Phi* phi = value->as_Phi();
   223       if (phi != NULL) {
   224         if (phi->operand()->is_valid()) {
   225           output()->print(" ");
   226           phi->operand()->print(output());
   227         }
   228       }
   229     }
   230     output()->put(']');
   231   }
   232   if (!stack->no_active_locks()) {
   233     // print out the lines on the line below this
   234     // one at the same indentation level.
   235     output()->cr();
   236     fill_to(start_position, ' ');
   237     output()->print("locks [");
   238     for (int i = i = 0; i < stack->locks_size(); i++) {
   239       Value t = stack->lock_at(i);
   240       if (i > 0) output()->print(", ");
   241       output()->print("%d:", i);
   242       if (t == NULL) {
   243         // synchronized methods push null on the lock stack
   244         output()->print("this");
   245       } else {
   246         print_value(t);
   247       }
   248     }
   249     output()->print("]");
   250   }
   251 }
   254 void InstructionPrinter::print_inline_level(BlockBegin* block) {
   255   output()->print_cr("inlining depth %d", block->scope()->level());
   256 }
   259 void InstructionPrinter::print_unsafe_op(UnsafeOp* op, const char* name) {
   260   output()->print(name);
   261   output()->print(".(");
   262 }
   264 void InstructionPrinter::print_unsafe_raw_op(UnsafeRawOp* op, const char* name) {
   265   print_unsafe_op(op, name);
   266   output()->print("base ");
   267   print_value(op->base());
   268   if (op->has_index()) {
   269     output()->print(", index "); print_value(op->index());
   270     output()->print(", log2_scale %d", op->log2_scale());
   271   }
   272 }
   275 void InstructionPrinter::print_unsafe_object_op(UnsafeObjectOp* op, const char* name) {
   276   print_unsafe_op(op, name);
   277   print_value(op->object());
   278   output()->print(", ");
   279   print_value(op->offset());
   280 }
   283 void InstructionPrinter::print_phi(int i, Value v, BlockBegin* b) {
   284   Phi* phi = v->as_Phi();
   285   output()->print("%2d  ", i);
   286   print_value(v);
   287   // print phi operands
   288   if (phi && phi->block() == b) {
   289     output()->print(" [");
   290     for (int j = 0; j < phi->operand_count(); j ++) {
   291       output()->print(" ");
   292       Value opd = phi->operand_at(j);
   293       if (opd) print_value(opd);
   294       else output()->print("NULL");
   295     }
   296     output()->print("] ");
   297   }
   298   print_alias(v);
   299 }
   302 void InstructionPrinter::print_alias(Value v) {
   303   if (v != v->subst()) {
   304     output()->print("alias "); print_value(v->subst());
   305   }
   306 }
   309 void InstructionPrinter::fill_to(int pos, char filler) {
   310   while (output()->position() < pos) output()->put(filler);
   311 }
   314 void InstructionPrinter::print_head() {
   315   const char filler = '_';
   316   fill_to(bci_pos  , filler); output()->print("bci"  );
   317   fill_to(use_pos  , filler); output()->print("use"  );
   318   fill_to(temp_pos , filler); output()->print("tid"  );
   319   fill_to(instr_pos, filler); output()->print("instr");
   320   fill_to(end_pos  , filler);
   321   output()->cr();
   322 }
   325 void InstructionPrinter::print_line(Instruction* instr) {
   326   // print instruction data on one line
   327   if (instr->is_pinned()) output()->put('.');
   328   fill_to(bci_pos  ); output()->print("%d", instr->printable_bci());
   329   fill_to(use_pos  ); output()->print("%d", instr->use_count());
   330   fill_to(temp_pos ); print_temp(instr);
   331   fill_to(instr_pos); print_instr(instr);
   332   output()->cr();
   333   // add a line for StateSplit instructions w/ non-empty stacks
   334   // (make it robust so we can print incomplete instructions)
   335   StateSplit* split = instr->as_StateSplit();
   336   if (split != NULL && split->state() != NULL && !split->state()->stack_is_empty()) {
   337     fill_to(instr_pos); print_stack(split->state());
   338     output()->cr();
   339   }
   340 }
   343 void InstructionPrinter::do_Phi(Phi* x) {
   344   output()->print("phi function");  // make that more detailed later
   345   if (x->is_illegal())
   346     output()->print(" (illegal)");
   347 }
   350 void InstructionPrinter::do_Local(Local* x) {
   351   output()->print("local[index %d]", x->java_index());
   352 }
   355 void InstructionPrinter::do_Constant(Constant* x) {
   356   ValueType* t = x->type();
   357   switch (t->tag()) {
   358     case intTag    : output()->print("%d"  , t->as_IntConstant   ()->value());    break;
   359     case longTag   : output()->print(os::jlong_format_specifier(), t->as_LongConstant()->value()); output()->print("L"); break;
   360     case floatTag  : output()->print("%g"  , t->as_FloatConstant ()->value());    break;
   361     case doubleTag : output()->print("%gD" , t->as_DoubleConstant()->value());    break;
   362     case objectTag : print_object(x);                                        break;
   363     case addressTag: output()->print("bci:%d", t->as_AddressConstant()->value()); break;
   364     default        : output()->print("???");                                      break;
   365   }
   366 }
   369 void InstructionPrinter::do_LoadField(LoadField* x) {
   370   print_field(x);
   371   output()->print(" (%c)", type2char(x->field()->type()->basic_type()));
   372 }
   375 void InstructionPrinter::do_StoreField(StoreField* x) {
   376   print_field(x);
   377   output()->print(" := ");
   378   print_value(x->value());
   379   output()->print(" (%c)", type2char(x->field()->type()->basic_type()));
   380 }
   383 void InstructionPrinter::do_ArrayLength(ArrayLength* x) {
   384   print_value(x->array());
   385   output()->print(".length");
   386 }
   389 void InstructionPrinter::do_LoadIndexed(LoadIndexed* x) {
   390   print_indexed(x);
   391   output()->print(" (%c)", type2char(x->elt_type()));
   392 }
   395 void InstructionPrinter::do_StoreIndexed(StoreIndexed* x) {
   396   print_indexed(x);
   397   output()->print(" := ");
   398   print_value(x->value());
   399   output()->print(" (%c)", type2char(x->elt_type()));
   400 }
   402 void InstructionPrinter::do_NegateOp(NegateOp* x) {
   403   output()->put('-');
   404   print_value(x->x());
   405 }
   408 void InstructionPrinter::do_ArithmeticOp(ArithmeticOp* x) {
   409   print_op2(x);
   410 }
   413 void InstructionPrinter::do_ShiftOp(ShiftOp* x) {
   414   print_op2(x);
   415 }
   418 void InstructionPrinter::do_LogicOp(LogicOp* x) {
   419   print_op2(x);
   420 }
   423 void InstructionPrinter::do_CompareOp(CompareOp* x) {
   424   print_op2(x);
   425 }
   428 void InstructionPrinter::do_IfOp(IfOp* x) {
   429   print_value(x->x());
   430   output()->print(" %s ", cond_name(x->cond()));
   431   print_value(x->y());
   432   output()->print(" ? ");
   433   print_value(x->tval());
   434   output()->print(" : ");
   435   print_value(x->fval());
   436 }
   439 void InstructionPrinter::do_Convert(Convert* x) {
   440   output()->print("%s(", Bytecodes::name(x->op()));
   441   print_value(x->value());
   442   output()->put(')');
   443 }
   446 void InstructionPrinter::do_NullCheck(NullCheck* x) {
   447   output()->print("null_check(");
   448   print_value(x->obj());
   449   output()->put(')');
   450   if (!x->can_trap()) {
   451     output()->print(" (eliminated)");
   452   }
   453 }
   456 void InstructionPrinter::do_Invoke(Invoke* x) {
   457   if (x->receiver() != NULL) {
   458     print_value(x->receiver());
   459     output()->print(".");
   460   }
   462   output()->print("%s(", Bytecodes::name(x->code()));
   463   for (int i = 0; i < x->number_of_arguments(); i++) {
   464     if (i > 0) output()->print(", ");
   465     print_value(x->argument_at(i));
   466   }
   467   output()->print_cr(")");
   468   fill_to(instr_pos);
   469   output()->print("%s.%s%s",
   470              x->target()->holder()->name()->as_utf8(),
   471              x->target()->name()->as_utf8(),
   472              x->target()->signature()->as_symbol()->as_utf8());
   473 }
   476 void InstructionPrinter::do_NewInstance(NewInstance* x) {
   477   output()->print("new instance ");
   478   print_klass(x->klass());
   479 }
   482 void InstructionPrinter::do_NewTypeArray(NewTypeArray* x) {
   483   output()->print("new %s array [", basic_type_name(x->elt_type()));
   484   print_value(x->length());
   485   output()->put(']');
   486 }
   489 void InstructionPrinter::do_NewObjectArray(NewObjectArray* x) {
   490   output()->print("new object array [");
   491   print_value(x->length());
   492   output()->print("] ");
   493   print_klass(x->klass());
   494 }
   497 void InstructionPrinter::do_NewMultiArray(NewMultiArray* x) {
   498   output()->print("new multi array [");
   499   Values* dims = x->dims();
   500   for (int i = 0; i < dims->length(); i++) {
   501     if (i > 0) output()->print(", ");
   502     print_value(dims->at(i));
   503   }
   504   output()->print("] ");
   505   print_klass(x->klass());
   506 }
   509 void InstructionPrinter::do_MonitorEnter(MonitorEnter* x) {
   510   output()->print("enter ");
   511   print_monitor(x);
   512 }
   515 void InstructionPrinter::do_MonitorExit(MonitorExit* x) {
   516   output()->print("exit ");
   517   print_monitor(x);
   518 }
   521 void InstructionPrinter::do_Intrinsic(Intrinsic* x) {
   522   const char* name = vmIntrinsics::name_at(x->id());
   523   if (name[0] == '_')  name++;  // strip leading bug from _hashCode, etc.
   524   const char* kname = vmSymbols::name_for(vmIntrinsics::class_for(x->id()));
   525   if (strchr(name, '_') == NULL) {
   526     kname = NULL;
   527   } else {
   528     const char* kptr = strrchr(kname, '/');
   529     if (kptr != NULL)  kname = kptr + 1;
   530   }
   531   if (kname == NULL)
   532     output()->print("%s(", name);
   533   else
   534     output()->print("%s.%s(", kname, name);
   535   for (int i = 0; i < x->number_of_arguments(); i++) {
   536     if (i > 0) output()->print(", ");
   537     print_value(x->argument_at(i));
   538   }
   539   output()->put(')');
   540 }
   543 void InstructionPrinter::do_BlockBegin(BlockBegin* x) {
   544   // print block id
   545   BlockEnd* end = x->end();
   546   output()->print("B%d ", x->block_id());
   548   // print flags
   549   bool printed_flag = false;
   550   if (x->is_set(BlockBegin::std_entry_flag)) {
   551     if (!printed_flag) output()->print("(");
   552     output()->print("S"); printed_flag = true;
   553   }
   554   if (x->is_set(BlockBegin::osr_entry_flag)) {
   555     if (!printed_flag) output()->print("(");
   556     output()->print("O"); printed_flag = true;
   557   }
   558   if (x->is_set(BlockBegin::exception_entry_flag)) {
   559     if (!printed_flag) output()->print("(");
   560     output()->print("E"); printed_flag = true;
   561   }
   562   if (x->is_set(BlockBegin::subroutine_entry_flag)) {
   563     if (!printed_flag) output()->print("(");
   564     output()->print("s"); printed_flag = true;
   565   }
   566   if (x->is_set(BlockBegin::parser_loop_header_flag)) {
   567     if (!printed_flag) output()->print("(");
   568     output()->print("LH"); printed_flag = true;
   569   }
   570   if (x->is_set(BlockBegin::backward_branch_target_flag)) {
   571     if (!printed_flag) output()->print("(");
   572     output()->print("b"); printed_flag = true;
   573   }
   574   if (x->is_set(BlockBegin::was_visited_flag)) {
   575     if (!printed_flag) output()->print("(");
   576     output()->print("V"); printed_flag = true;
   577   }
   578   if (printed_flag) output()->print(") ");
   580   // print block bci range
   581   output()->print("[%d, %d]", x->bci(), (end == NULL ? -1 : end->printable_bci()));
   583   // print block successors
   584   if (end != NULL && end->number_of_sux() > 0) {
   585     output()->print(" ->");
   586     for (int i = 0; i < end->number_of_sux(); i++) {
   587       output()->print(" B%d", end->sux_at(i)->block_id());
   588     }
   589   }
   590   // print exception handlers
   591   if (x->number_of_exception_handlers() > 0) {
   592     output()->print(" (xhandlers ");
   593     for (int i = 0; i < x->number_of_exception_handlers();  i++) {
   594       if (i > 0) output()->print(" ");
   595       output()->print("B%d", x->exception_handler_at(i)->block_id());
   596     }
   597     output()->put(')');
   598   }
   600   // print dominator block
   601   if (x->dominator() != NULL) {
   602     output()->print(" dom B%d", x->dominator()->block_id());
   603   }
   605   // print predecessors and successors
   606   if (x->successors()->length() > 0) {
   607     output()->print(" sux:");
   608     for (int i = 0; i < x->successors()->length(); i ++) {
   609       output()->print(" B%d", x->successors()->at(i)->block_id());
   610     }
   611   }
   613   if (x->number_of_preds() > 0) {
   614     output()->print(" pred:");
   615     for (int i = 0; i < x->number_of_preds(); i ++) {
   616       output()->print(" B%d", x->pred_at(i)->block_id());
   617     }
   618   }
   620   if (!_print_phis) {
   621     return;
   622   }
   624   // print phi functions
   625   bool has_phis_in_locals = false;
   626   bool has_phis_on_stack = false;
   628   if (x->end() && x->end()->state()) {
   629     ValueStack* state = x->state();
   631     int i = 0;
   632     while (!has_phis_on_stack && i < state->stack_size()) {
   633       Value v = state->stack_at_inc(i);
   634       has_phis_on_stack = is_phi_of_block(v, x);
   635     }
   637     do {
   638       for (i = 0; !has_phis_in_locals && i < state->locals_size();) {
   639         Value v = state->local_at(i);
   640         has_phis_in_locals = is_phi_of_block(v, x);
   641         // also ignore illegal HiWords
   642         if (v && !v->type()->is_illegal()) i += v->type()->size(); else i ++;
   643       }
   644       state = state->caller_state();
   645     } while (state != NULL);
   647   }
   649   // print values in locals
   650   if (has_phis_in_locals) {
   651     output()->cr(); output()->print_cr("Locals:");
   653     ValueStack* state = x->state();
   654     do {
   655       for (int i = 0; i < state->locals_size();) {
   656         Value v = state->local_at(i);
   657         if (v) {
   658           print_phi(i, v, x); output()->cr();
   659           // also ignore illegal HiWords
   660           i += (v->type()->is_illegal() ? 1 : v->type()->size());
   661         } else {
   662           i ++;
   663         }
   664       }
   665       output()->cr();
   666       state = state->caller_state();
   667     } while (state != NULL);
   668   }
   670   // print values on stack
   671   if (has_phis_on_stack) {
   672     output()->print_cr("Stack:");
   673     int i = 0;
   674     while (i < x->state()->stack_size()) {
   675       int o = i;
   676       Value v = x->state()->stack_at_inc(i);
   677       if (v) {
   678         print_phi(o, v, x); output()->cr();
   679       }
   680     }
   681   }
   682 }
   685 void InstructionPrinter::do_CheckCast(CheckCast* x) {
   686   output()->print("checkcast(");
   687   print_value(x->obj());
   688   output()->print(") ");
   689   print_klass(x->klass());
   690 }
   693 void InstructionPrinter::do_InstanceOf(InstanceOf* x) {
   694   output()->print("instanceof(");
   695   print_value(x->obj());
   696   output()->print(") ");
   697   print_klass(x->klass());
   698 }
   701 void InstructionPrinter::do_Goto(Goto* x) {
   702   output()->print("goto B%d", x->default_sux()->block_id());
   703   if (x->is_safepoint()) output()->print(" (safepoint)");
   704 }
   707 void InstructionPrinter::do_If(If* x) {
   708   output()->print("if ");
   709   print_value(x->x());
   710   output()->print(" %s ", cond_name(x->cond()));
   711   print_value(x->y());
   712   output()->print(" then B%d else B%d", x->sux_at(0)->block_id(), x->sux_at(1)->block_id());
   713   if (x->is_safepoint()) output()->print(" (safepoint)");
   714 }
   717 void InstructionPrinter::do_IfInstanceOf(IfInstanceOf* x) {
   718   output()->print("<IfInstanceOf>");
   719 }
   722 void InstructionPrinter::do_TableSwitch(TableSwitch* x) {
   723   output()->print("tableswitch ");
   724   if (x->is_safepoint()) output()->print("(safepoint) ");
   725   print_value(x->tag());
   726   output()->cr();
   727   int l = x->length();
   728   for (int i = 0; i < l; i++) {
   729     fill_to(instr_pos);
   730     output()->print_cr("case %5d: B%d", x->lo_key() + i, x->sux_at(i)->block_id());
   731   }
   732   fill_to(instr_pos);
   733   output()->print("default   : B%d", x->default_sux()->block_id());
   734 }
   737 void InstructionPrinter::do_LookupSwitch(LookupSwitch* x) {
   738   output()->print("lookupswitch ");
   739   if (x->is_safepoint()) output()->print("(safepoint) ");
   740   print_value(x->tag());
   741   output()->cr();
   742   int l = x->length();
   743   for (int i = 0; i < l; i++) {
   744     fill_to(instr_pos);
   745     output()->print_cr("case %5d: B%d", x->key_at(i), x->sux_at(i)->block_id());
   746   }
   747   fill_to(instr_pos);
   748   output()->print("default   : B%d", x->default_sux()->block_id());
   749 }
   752 void InstructionPrinter::do_Return(Return* x) {
   753   if (x->result() == NULL) {
   754     output()->print("return");
   755   } else {
   756     output()->print("%creturn ", x->type()->tchar());
   757     print_value(x->result());
   758   }
   759 }
   762 void InstructionPrinter::do_Throw(Throw* x) {
   763   output()->print("throw ");
   764   print_value(x->exception());
   765 }
   768 void InstructionPrinter::do_Base(Base* x) {
   769   output()->print("std entry B%d", x->std_entry()->block_id());
   770   if (x->number_of_sux() > 1) {
   771     output()->print(" osr entry B%d", x->osr_entry()->block_id());
   772   }
   773 }
   776 void InstructionPrinter::do_OsrEntry(OsrEntry* x) {
   777   output()->print("osr entry");
   778 }
   781 void InstructionPrinter::do_ExceptionObject(ExceptionObject* x) {
   782   output()->print("incoming exception");
   783 }
   786 void InstructionPrinter::do_RoundFP(RoundFP* x) {
   787   output()->print("round_fp ");
   788   print_value(x->input());
   789 }
   792 void InstructionPrinter::do_UnsafeGetRaw(UnsafeGetRaw* x) {
   793   print_unsafe_raw_op(x, "UnsafeGetRaw");
   794   output()->put(')');
   795 }
   798 void InstructionPrinter::do_UnsafePutRaw(UnsafePutRaw* x) {
   799   print_unsafe_raw_op(x, "UnsafePutRaw");
   800   output()->print(", value ");
   801   print_value(x->value());
   802   output()->put(')');
   803 }
   806 void InstructionPrinter::do_UnsafeGetObject(UnsafeGetObject* x) {
   807   print_unsafe_object_op(x, "UnsafeGetObject");
   808   output()->put(')');
   809 }
   812 void InstructionPrinter::do_UnsafePutObject(UnsafePutObject* x) {
   813   print_unsafe_object_op(x, "UnsafePutObject");
   814   output()->print(", value ");
   815   print_value(x->value());
   816   output()->put(')');
   817 }
   820 void InstructionPrinter::do_UnsafePrefetchRead(UnsafePrefetchRead* x) {
   821   print_unsafe_object_op(x, "UnsafePrefetchRead");
   822   output()->put(')');
   823 }
   826 void InstructionPrinter::do_UnsafePrefetchWrite(UnsafePrefetchWrite* x) {
   827   print_unsafe_object_op(x, "UnsafePrefetchWrite");
   828   output()->put(')');
   829 }
   831 void InstructionPrinter::do_ProfileCall(ProfileCall* x) {
   832   output()->print("profile ");
   833   print_value(x->recv());
   834   output()->print(" %s.%s", x->method()->holder()->name()->as_utf8(), x->method()->name()->as_utf8());
   835   if (x->known_holder() != NULL) {
   836     output()->print(", ");
   837     print_klass(x->known_holder());
   838   }
   839   output()->put(')');
   840 }
   842 void InstructionPrinter::do_ProfileInvoke(ProfileInvoke* x) {
   843   output()->print("profile_invoke ");
   844   output()->print(" %s.%s", x->inlinee()->holder()->name()->as_utf8(), x->inlinee()->name()->as_utf8());
   845   output()->put(')');
   847 }
   849 void InstructionPrinter::do_RuntimeCall(RuntimeCall* x) {
   850   output()->print("call_rt %s(", x->entry_name());
   851   for (int i = 0; i < x->number_of_arguments(); i++) {
   852     if (i > 0) output()->print(", ");
   853     print_value(x->argument_at(i));
   854   }
   855   output()->put(')');
   856 }
   858 #endif // PRODUCT

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