Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/opto/loopPredicate.cpp
src/share/vm/opto/loopPredicate.cpp
- changeset 2868
- 2e038ad0c1d0
- parent 2727
- 08eb13460b3a
- child 2877
- bad7ecd0b6ed
equal
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replaced
| 2867:49d67a090fe2 | 2868:2e038ad0c1d0 |
|---|---|
| 698 // max(scale*i + offset) = scale*init + offset | 698 // max(scale*i + offset) = scale*init + offset |
| 699 BoolNode* PhaseIdealLoop::rc_predicate(Node* ctrl, | 699 BoolNode* PhaseIdealLoop::rc_predicate(Node* ctrl, |
| 700 int scale, Node* offset, | 700 int scale, Node* offset, |
| 701 Node* init, Node* limit, Node* stride, | 701 Node* init, Node* limit, Node* stride, |
| 702 Node* range, bool upper) { | 702 Node* range, bool upper) { |
| 703 DEBUG_ONLY(ttyLocker ttyl); | 703 stringStream* predString = NULL; |
| 704 if (TraceLoopPredicate) tty->print("rc_predicate "); | 704 if (TraceLoopPredicate) { |
| 705 predString = new stringStream(); | |
| 706 predString->print("rc_predicate "); | |
| 707 } | |
| 705 | 708 |
| 706 Node* max_idx_expr = init; | 709 Node* max_idx_expr = init; |
| 707 int stride_con = stride->get_int(); | 710 int stride_con = stride->get_int(); |
| 708 if ((stride_con > 0) == (scale > 0) == upper) { | 711 if ((stride_con > 0) == (scale > 0) == upper) { |
| 709 max_idx_expr = new (C, 3) SubINode(limit, stride); | 712 max_idx_expr = new (C, 3) SubINode(limit, stride); |
| 710 register_new_node(max_idx_expr, ctrl); | 713 register_new_node(max_idx_expr, ctrl); |
| 711 if (TraceLoopPredicate) tty->print("(limit - stride) "); | 714 if (TraceLoopPredicate) predString->print("(limit - stride) "); |
| 712 } else { | 715 } else { |
| 713 if (TraceLoopPredicate) tty->print("init "); | 716 if (TraceLoopPredicate) predString->print("init "); |
| 714 } | 717 } |
| 715 | 718 |
| 716 if (scale != 1) { | 719 if (scale != 1) { |
| 717 ConNode* con_scale = _igvn.intcon(scale); | 720 ConNode* con_scale = _igvn.intcon(scale); |
| 718 max_idx_expr = new (C, 3) MulINode(max_idx_expr, con_scale); | 721 max_idx_expr = new (C, 3) MulINode(max_idx_expr, con_scale); |
| 719 register_new_node(max_idx_expr, ctrl); | 722 register_new_node(max_idx_expr, ctrl); |
| 720 if (TraceLoopPredicate) tty->print("* %d ", scale); | 723 if (TraceLoopPredicate) predString->print("* %d ", scale); |
| 721 } | 724 } |
| 722 | 725 |
| 723 if (offset && (!offset->is_Con() || offset->get_int() != 0)){ | 726 if (offset && (!offset->is_Con() || offset->get_int() != 0)){ |
| 724 max_idx_expr = new (C, 3) AddINode(max_idx_expr, offset); | 727 max_idx_expr = new (C, 3) AddINode(max_idx_expr, offset); |
| 725 register_new_node(max_idx_expr, ctrl); | 728 register_new_node(max_idx_expr, ctrl); |
| 726 if (TraceLoopPredicate) | 729 if (TraceLoopPredicate) |
| 727 if (offset->is_Con()) tty->print("+ %d ", offset->get_int()); | 730 if (offset->is_Con()) predString->print("+ %d ", offset->get_int()); |
| 728 else tty->print("+ offset "); | 731 else predString->print("+ offset "); |
| 729 } | 732 } |
| 730 | 733 |
| 731 CmpUNode* cmp = new (C, 3) CmpUNode(max_idx_expr, range); | 734 CmpUNode* cmp = new (C, 3) CmpUNode(max_idx_expr, range); |
| 732 register_new_node(cmp, ctrl); | 735 register_new_node(cmp, ctrl); |
| 733 BoolNode* bol = new (C, 2) BoolNode(cmp, BoolTest::lt); | 736 BoolNode* bol = new (C, 2) BoolNode(cmp, BoolTest::lt); |
| 734 register_new_node(bol, ctrl); | 737 register_new_node(bol, ctrl); |
| 735 | 738 |
| 736 if (TraceLoopPredicate) tty->print_cr("<u range"); | 739 if (TraceLoopPredicate) { |
| 740 predString->print_cr("<u range"); | |
| 741 tty->print(predString->as_string()); | |
| 742 } | |
| 737 return bol; | 743 return bol; |
| 738 } | 744 } |
| 739 | 745 |
| 740 //------------------------------ loop_predication_impl-------------------------- | 746 //------------------------------ loop_predication_impl-------------------------- |
| 741 // Insert loop predicates for null checks and range checks | 747 // Insert loop predicates for null checks and range checks |
| 955 hoisted |= _next->loop_predication( phase); | 961 hoisted |= _next->loop_predication( phase); |
| 956 } | 962 } |
| 957 | 963 |
| 958 return hoisted; | 964 return hoisted; |
| 959 } | 965 } |
| 960 |
