Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/opto/lcm.cpp
src/share/vm/opto/lcm.cpp
- changeset 9912
- 97d09139b360
- parent 9475
- 61523d110335
- child 9931
- fd44df5e3bc3
- child 9953
- 8a8f679915aa
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| 9911:6f33e450999c | 9912:97d09139b360 |
|---|---|
| 1 /* | 1 /* |
| 2 * Copyright (c) 1998, 2015, Oracle and/or its affiliates. All rights reserved. | 2 * Copyright (c) 1998, 2016, Oracle and/or its affiliates. All rights reserved. |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | 4 * |
| 5 * This code is free software; you can redistribute it and/or modify it | 5 * This code is free software; you can redistribute it and/or modify it |
| 6 * under the terms of the GNU General Public License version 2 only, as | 6 * under the terms of the GNU General Public License version 2 only, as |
| 7 * published by the Free Software Foundation. | 7 * published by the Free Software Foundation. |
| 813 // and then removes the last edge. If the specified edge > number of | 813 // and then removes the last edge. If the specified edge > number of |
| 814 // edges the last edge will be moved outside of the input edges array | 814 // edges the last edge will be moved outside of the input edges array |
| 815 // and the edge will be lost. This is why this code should be | 815 // and the edge will be lost. This is why this code should be |
| 816 // executed only when Precedent (== TypeFunc::Parms) edge is present. | 816 // executed only when Precedent (== TypeFunc::Parms) edge is present. |
| 817 Node *x = n->in(TypeFunc::Parms); | 817 Node *x = n->in(TypeFunc::Parms); |
| 818 if (x != NULL && get_block_for_node(x) == block && n->find_prec_edge(x) != -1) { | |
| 819 // Old edge to node within same block will get removed, but no precedence | |
| 820 // edge will get added because it already exists. Update ready count. | |
| 821 int cnt = ready_cnt.at(n->_idx); | |
| 822 assert(cnt > 1, err_msg("MemBar node %d must not get ready here", n->_idx)); | |
| 823 ready_cnt.at_put(n->_idx, cnt-1); | |
| 824 } | |
| 818 n->del_req(TypeFunc::Parms); | 825 n->del_req(TypeFunc::Parms); |
| 819 n->add_prec(x); | 826 n->add_prec(x); |
| 820 } | 827 } |
| 821 } | 828 } |
| 822 } | 829 } |
