Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/opto/compile.cpp
src/share/vm/opto/compile.cpp
- changeset 2683
- 7e88bdae86ec
- parent 2658
- c7f3d0b4570f
- child 2727
- 08eb13460b3a
- child 2784
- 92add02409c9
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inserted
replaced
| 2681:b2949bf39900 | 2683:7e88bdae86ec |
|---|---|
| 2542 case Op_CountedLoop: | 2542 case Op_CountedLoop: |
| 2543 if (n->as_Loop()->is_inner_loop()) { | 2543 if (n->as_Loop()->is_inner_loop()) { |
| 2544 frc.inc_inner_loop_count(); | 2544 frc.inc_inner_loop_count(); |
| 2545 } | 2545 } |
| 2546 break; | 2546 break; |
| 2547 case Op_LShiftI: | |
| 2548 case Op_RShiftI: | |
| 2549 case Op_URShiftI: | |
| 2550 case Op_LShiftL: | |
| 2551 case Op_RShiftL: | |
| 2552 case Op_URShiftL: | |
| 2553 if (Matcher::need_masked_shift_count) { | |
| 2554 // The cpu's shift instructions don't restrict the count to the | |
| 2555 // lower 5/6 bits. We need to do the masking ourselves. | |
| 2556 Node* in2 = n->in(2); | |
| 2557 juint mask = (n->bottom_type() == TypeInt::INT) ? (BitsPerInt - 1) : (BitsPerLong - 1); | |
| 2558 const TypeInt* t = in2->find_int_type(); | |
| 2559 if (t != NULL && t->is_con()) { | |
| 2560 juint shift = t->get_con(); | |
| 2561 if (shift > mask) { // Unsigned cmp | |
| 2562 Compile* C = Compile::current(); | |
| 2563 n->set_req(2, ConNode::make(C, TypeInt::make(shift & mask))); | |
| 2564 } | |
| 2565 } else { | |
| 2566 if (t == NULL || t->_lo < 0 || t->_hi > (int)mask) { | |
| 2567 Compile* C = Compile::current(); | |
| 2568 Node* shift = new (C, 3) AndINode(in2, ConNode::make(C, TypeInt::make(mask))); | |
| 2569 n->set_req(2, shift); | |
| 2570 } | |
| 2571 } | |
| 2572 if (in2->outcnt() == 0) { // Remove dead node | |
| 2573 in2->disconnect_inputs(NULL); | |
| 2574 } | |
| 2575 } | |
| 2576 break; | |
| 2547 default: | 2577 default: |
| 2548 assert( !n->is_Call(), "" ); | 2578 assert( !n->is_Call(), "" ); |
| 2549 assert( !n->is_Mem(), "" ); | 2579 assert( !n->is_Mem(), "" ); |
| 2550 break; | 2580 break; |
| 2551 } | 2581 } |
