Mercurial > hg > graal-compiler
annotate src/share/vm/opto/live.hpp @ 8499:96a337d307bd
-More progress in G1 WBs
author | Christos Kotselidis <christos.kotselidis@oracle.com> |
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date | Mon, 04 Mar 2013 16:46:37 +0100 |
parents | f95d63e2154a |
children | 056ab43544a4 |
rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
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 | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_OPTO_LIVE_HPP |
26 #define SHARE_VM_OPTO_LIVE_HPP | |
27 | |
28 #include "libadt/port.hpp" | |
29 #include "libadt/vectset.hpp" | |
30 #include "opto/block.hpp" | |
31 #include "opto/indexSet.hpp" | |
32 #include "opto/phase.hpp" | |
33 #include "opto/regmask.hpp" | |
34 | |
0 | 35 class Block; |
36 class LRG_List; | |
37 class PhaseCFG; | |
38 class VectorSet; | |
39 class IndexSet; | |
40 | |
41 //------------------------------PhaseLive-------------------------------------- | |
42 // Compute live-in/live-out | |
43 class PhaseLive : public Phase { | |
44 // Array of Sets of values live at the start of a block. | |
45 // Indexed by block pre-order number. | |
46 IndexSet *_live; | |
47 | |
48 // Array of Sets of values defined locally in the block | |
49 // Indexed by block pre-order number. | |
50 IndexSet *_defs; | |
51 | |
52 // Array of delta-set pointers, indexed by block pre-order number | |
53 IndexSet **_deltas; | |
54 IndexSet *_free_IndexSet; // Free list of same | |
55 | |
56 Block_List *_worklist; // Worklist for iterative solution | |
57 | |
58 const PhaseCFG &_cfg; // Basic blocks | |
59 LRG_List &_names; // Mapping from Nodes to live ranges | |
60 uint _maxlrg; // Largest live-range number | |
61 Arena *_arena; | |
62 | |
63 IndexSet *getset( Block *p ); | |
64 IndexSet *getfreeset( ); | |
65 void freeset( const Block *p ); | |
66 void add_liveout( Block *p, uint r, VectorSet &first_pass ); | |
67 void add_liveout( Block *p, IndexSet *lo, VectorSet &first_pass ); | |
68 | |
69 public: | |
70 PhaseLive( const PhaseCFG &cfg, LRG_List &names, Arena *arena ); | |
71 ~PhaseLive() {} | |
72 // Compute liveness info | |
73 void compute(uint maxlrg); | |
74 // Reset arena storage | |
75 void reset() { _live = NULL; } | |
76 | |
77 // Return the live-out set for this block | |
78 IndexSet *live( const Block * b ) { return &_live[b->_pre_order-1]; } | |
79 | |
80 #ifndef PRODUCT | |
81 void dump( const Block *b ) const; | |
82 void stats(uint iters) const; | |
83 #endif | |
84 }; | |
1972 | 85 |
86 #endif // SHARE_VM_OPTO_LIVE_HPP |