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src/share/vm/c1/c1_LIRGenerator.cpp

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 531     case Bytecodes::_ladd:
 532     case Bytecodes::_iadd:  __ add(left_op, right_op, result_op); break;
 533     case Bytecodes::_fmul:
 534     case Bytecodes::_lmul:  __ mul(left_op, right_op, result_op); break;
 535 
 536     case Bytecodes::_dmul:
 537       {
 538         if (is_strictfp) {
 539           __ mul_strictfp(left_op, right_op, result_op, tmp_op); break;
 540         } else {
 541           __ mul(left_op, right_op, result_op); break;
 542         }
 543       }
 544       break;
 545 
 546     case Bytecodes::_imul:
 547       {
 548         bool    did_strength_reduce = false;
 549 
 550         if (right->is_constant()) {
 551           int c = right->as_jint();
 552           if (is_power_of_2(c)) {
 553             // do not need tmp here
 554             __ shift_left(left_op, exact_log2(c), result_op);
 555             did_strength_reduce = true;
 556           } else {
 557             did_strength_reduce = strength_reduce_multiply(left_op, c, result_op, tmp_op);
 558           }
 559         }
 560         // we couldn't strength reduce so just emit the multiply
 561         if (!did_strength_reduce) {
 562           __ mul(left_op, right_op, result_op);
 563         }
 564       }
 565       break;
 566 
 567     case Bytecodes::_dsub:
 568     case Bytecodes::_fsub:
 569     case Bytecodes::_lsub:
 570     case Bytecodes::_isub: __ sub(left_op, right_op, result_op); break;
 571 
 572     case Bytecodes::_fdiv: __ div (left_op, right_op, result_op); break;




 531     case Bytecodes::_ladd:
 532     case Bytecodes::_iadd:  __ add(left_op, right_op, result_op); break;
 533     case Bytecodes::_fmul:
 534     case Bytecodes::_lmul:  __ mul(left_op, right_op, result_op); break;
 535 
 536     case Bytecodes::_dmul:
 537       {
 538         if (is_strictfp) {
 539           __ mul_strictfp(left_op, right_op, result_op, tmp_op); break;
 540         } else {
 541           __ mul(left_op, right_op, result_op); break;
 542         }
 543       }
 544       break;
 545 
 546     case Bytecodes::_imul:
 547       {
 548         bool did_strength_reduce = false;
 549 
 550         if (right->is_constant()) {
 551           jint c = right->as_jint();
 552           if (c > 0 && is_power_of_2(c)) {
 553             // do not need tmp here
 554             __ shift_left(left_op, exact_log2(c), result_op);
 555             did_strength_reduce = true;
 556           } else {
 557             did_strength_reduce = strength_reduce_multiply(left_op, c, result_op, tmp_op);
 558           }
 559         }
 560         // we couldn't strength reduce so just emit the multiply
 561         if (!did_strength_reduce) {
 562           __ mul(left_op, right_op, result_op);
 563         }
 564       }
 565       break;
 566 
 567     case Bytecodes::_dsub:
 568     case Bytecodes::_fsub:
 569     case Bytecodes::_lsub:
 570     case Bytecodes::_isub: __ sub(left_op, right_op, result_op); break;
 571 
 572     case Bytecodes::_fdiv: __ div (left_op, right_op, result_op); break;


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