Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/c1/c1_LIRGenerator.cpp
src/share/vm/c1/c1_LIRGenerator.cpp
- changeset 9843
- a6f289d66efe
- parent 9842
- 4df47a343601
- child 9852
- 70aa912cebe5
- child 9896
- 1b8c45b8216a
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replaced
| 9842:4df47a343601 | 9843:a6f289d66efe |
|---|---|
| 537 } | 537 } |
| 538 break; | 538 break; |
| 539 | 539 |
| 540 case Bytecodes::_imul: | 540 case Bytecodes::_imul: |
| 541 { | 541 { |
| 542 bool did_strength_reduce = false; | 542 bool did_strength_reduce = false; |
| 543 | 543 |
| 544 if (right->is_constant()) { | 544 if (right->is_constant()) { |
| 545 int c = right->as_jint(); | 545 jint c = right->as_jint(); |
| 546 if (is_power_of_2(c)) { | 546 if (c > 0 && is_power_of_2(c)) { |
| 547 // do not need tmp here | 547 // do not need tmp here |
| 548 __ shift_left(left_op, exact_log2(c), result_op); | 548 __ shift_left(left_op, exact_log2(c), result_op); |
| 549 did_strength_reduce = true; | 549 did_strength_reduce = true; |
| 550 } else { | 550 } else { |
| 551 did_strength_reduce = strength_reduce_multiply(left_op, c, result_op, tmp_op); | 551 did_strength_reduce = strength_reduce_multiply(left_op, c, result_op, tmp_op); |
