392 

   392 

   393 // This is called for each node in tree; the walk stops if a root is reached

   393 // This is called for each node in tree; the walk stops if a root is reached

   394 void LIRGenerator::walk(Value instr) {

   394 void LIRGenerator::walk(Value instr) {

   395   InstructionMark im(compilation(), instr);

   395   InstructionMark im(compilation(), instr);

   396   //stop walk when encounter a root

   396   //stop walk when encounter a root

   398     assert(instr->operand() != LIR_OprFact::illegalOpr || instr->as_Constant() != NULL, "this root has not yet been visited");

   398     assert(instr->operand() != LIR_OprFact::illegalOpr || instr->as_Constant() != NULL, "this root has not yet been visited");

   399   } else {

   399   } else {

   400     assert(instr->subst() == instr, "shouldn't have missed substitution");

   400     assert(instr->subst() == instr, "shouldn't have missed substitution");

   401     instr->visit(this);

   401     instr->visit(this);

   402     // assert(instr->use_count() > 0 || instr->as_Phi() != NULL, "leaf instruction must have a use");

   402     // assert(instr->use_count() > 0 || instr->as_Phi() != NULL, "leaf instruction must have a use");

  1431         if (c->as_jint_hi_bits() != other->as_jint_hi_bits()) continue;

  1431         if (c->as_jint_hi_bits() != other->as_jint_hi_bits()) continue;

  1432         if (c->as_jint_lo_bits() != other->as_jint_lo_bits()) continue;

  1432         if (c->as_jint_lo_bits() != other->as_jint_lo_bits()) continue;

  1433         break;

  1433         break;

  1434       case T_OBJECT:

  1434       case T_OBJECT:

  1435         if (c->as_jobject() != other->as_jobject()) continue;

  1435         if (c->as_jobject() != other->as_jobject()) continue;

  1436         break;

  1438         break;

  1437       }

  1439       }

  1438       return _reg_for_constants.at(i);

  1440       return _reg_for_constants.at(i);

  1439     }

  1441     }

  1440   }

  1442   }

  2801     case T_BYTE:

  2803     case T_BYTE:

  2802     case T_BOOLEAN:

  2804     case T_BOOLEAN:

  2803     case T_SHORT:

  2805     case T_SHORT:

  2804     case T_CHAR:

  2806     case T_CHAR:

  2805       t = T_INT;

  2807       t = T_INT;

  2806       break;

  2810       break;

  2807     }

  2811     }

  2808 

  2812 

  2809     LIR_Opr dest = new_register(t);

  2813     LIR_Opr dest = new_register(t);

  2810     __ move(src, dest);

  2814     __ move(src, dest);