Mercurial > hg > CbC > CbC_gcc
annotate gcc/ddg.h @ 108:7ad14f446135
add CbC-example/rectypeTest/
| author | Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Thu, 14 Jun 2012 20:30:24 +0900 |
| parents | 77e2b8dfacca |
| children | 04ced10e8804 |
| rev | line source |
|---|---|
| 0 | 1 /* DDG - Data Dependence Graph - interface. |
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2 Copyright (C) 2004, 2005, 2006, 2007, 2008 |
| 0 | 3 Free Software Foundation, Inc. |
| 4 Contributed by Ayal Zaks and Mustafa Hagog <zaks,mustafa@il.ibm.com> | |
| 5 | |
| 6 This file is part of GCC. | |
| 7 | |
| 8 GCC is free software; you can redistribute it and/or modify it under | |
| 9 the terms of the GNU General Public License as published by the Free | |
| 10 Software Foundation; either version 3, or (at your option) any later | |
| 11 version. | |
| 12 | |
| 13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 14 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 19 along with GCC; see the file COPYING3. If not see | |
| 20 <http://www.gnu.org/licenses/>. */ | |
| 21 | |
| 22 #ifndef GCC_DDG_H | |
| 23 #define GCC_DDG_H | |
| 24 | |
| 25 /* For sbitmap. */ | |
| 26 #include "sbitmap.h" | |
| 27 /* For basic_block. */ | |
| 28 #include "basic-block.h" | |
| 29 #include "df.h" | |
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30 |
| 0 | 31 typedef struct ddg_node *ddg_node_ptr; |
| 32 typedef struct ddg_edge *ddg_edge_ptr; | |
| 33 typedef struct ddg *ddg_ptr; | |
| 34 typedef struct ddg_scc *ddg_scc_ptr; | |
| 35 typedef struct ddg_all_sccs *ddg_all_sccs_ptr; | |
| 36 | |
| 37 typedef enum {TRUE_DEP, OUTPUT_DEP, ANTI_DEP} dep_type; | |
| 38 typedef enum {REG_OR_MEM_DEP, REG_DEP, MEM_DEP, REG_AND_MEM_DEP} | |
| 39 dep_data_type; | |
| 40 | |
| 41 /* The following two macros enables direct access to the successors and | |
| 42 predecessors bitmaps held in each ddg_node. Do not make changes to | |
| 43 these bitmaps, unless you want to change the DDG. */ | |
| 44 #define NODE_SUCCESSORS(x) ((x)->successors) | |
| 45 #define NODE_PREDECESSORS(x) ((x)->predecessors) | |
| 46 | |
| 47 /* A structure that represents a node in the DDG. */ | |
| 48 struct ddg_node | |
| 49 { | |
| 50 /* Each node has a unique CUID index. These indices increase monotonically | |
| 51 (according to the order of the corresponding INSN in the BB), starting | |
| 52 from 0 with no gaps. */ | |
| 53 int cuid; | |
| 54 | |
| 55 /* The insn represented by the node. */ | |
| 56 rtx insn; | |
| 57 | |
| 58 /* A note preceding INSN (or INSN itself), such that all insns linked | |
| 59 from FIRST_NOTE until INSN (inclusive of both) are moved together | |
| 60 when reordering the insns. This takes care of notes that should | |
| 61 continue to precede INSN. */ | |
| 62 rtx first_note; | |
| 63 | |
| 64 /* Incoming and outgoing dependency edges. */ | |
| 65 ddg_edge_ptr in; | |
| 66 ddg_edge_ptr out; | |
| 67 | |
| 68 /* Each bit corresponds to a ddg_node according to its cuid, and is | |
| 69 set iff the node is a successor/predecessor of "this" node. */ | |
| 70 sbitmap successors; | |
| 71 sbitmap predecessors; | |
| 72 | |
| 73 /* For general use by algorithms manipulating the ddg. */ | |
| 74 union { | |
| 75 int count; | |
| 76 void *info; | |
| 77 } aux; | |
| 78 }; | |
| 79 | |
| 80 /* A structure that represents an edge in the DDG. */ | |
| 81 struct ddg_edge | |
| 82 { | |
| 83 /* The source and destination nodes of the dependency edge. */ | |
| 84 ddg_node_ptr src; | |
| 85 ddg_node_ptr dest; | |
| 86 | |
| 87 /* TRUE, OUTPUT or ANTI dependency. */ | |
| 88 dep_type type; | |
| 89 | |
| 90 /* REG or MEM dependency. */ | |
| 91 dep_data_type data_type; | |
| 92 | |
| 93 /* Latency of the dependency. */ | |
| 94 int latency; | |
| 95 | |
| 96 /* The distance: number of loop iterations the dependency crosses. */ | |
| 97 int distance; | |
| 98 | |
| 99 /* The following two fields are used to form a linked list of the in/out | |
| 100 going edges to/from each node. */ | |
| 101 ddg_edge_ptr next_in; | |
| 102 ddg_edge_ptr next_out; | |
| 103 | |
| 104 /* For general use by algorithms manipulating the ddg. */ | |
| 105 union { | |
| 106 int count; | |
| 107 void *info; | |
| 108 } aux; | |
| 109 }; | |
| 110 | |
| 111 /* This structure holds the Data Dependence Graph for a basic block. */ | |
| 112 struct ddg | |
| 113 { | |
| 114 /* The basic block for which this DDG is built. */ | |
| 115 basic_block bb; | |
| 116 | |
| 117 /* Number of instructions in the basic block. */ | |
| 118 int num_nodes; | |
| 119 | |
| 120 /* Number of load/store instructions in the BB - statistics. */ | |
| 121 int num_loads; | |
| 122 int num_stores; | |
| 123 | |
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124 /* Number of debug instructions in the BB. */ |
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77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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125 int num_debug; |
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77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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diff
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126 |
| 0 | 127 /* This array holds the nodes in the graph; it is indexed by the node |
| 128 cuid, which follows the order of the instructions in the BB. */ | |
| 129 ddg_node_ptr nodes; | |
| 130 | |
| 131 /* The branch closing the loop. */ | |
| 132 ddg_node_ptr closing_branch; | |
| 133 | |
| 134 /* Build dependence edges for closing_branch, when set. In certain cases, | |
| 135 the closing branch can be dealt with separately from the insns of the | |
| 136 loop, and then no such deps are needed. */ | |
| 137 int closing_branch_deps; | |
| 138 | |
| 139 /* Array and number of backarcs (edges with distance > 0) in the DDG. */ | |
|
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77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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diff
changeset
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140 int num_backarcs; |
| 0 | 141 ddg_edge_ptr *backarcs; |
| 142 }; | |
| 143 | |
| 144 | |
| 145 /* Holds information on an SCC (Strongly Connected Component) of the DDG. */ | |
| 146 struct ddg_scc | |
| 147 { | |
| 148 /* A bitmap that represents the nodes of the DDG that are in the SCC. */ | |
| 149 sbitmap nodes; | |
| 150 | |
| 151 /* Array and number of backarcs (edges with distance > 0) in the SCC. */ | |
| 152 ddg_edge_ptr *backarcs; | |
| 153 int num_backarcs; | |
| 154 | |
| 155 /* The maximum of (total_latency/total_distance) over all cycles in SCC. */ | |
| 156 int recurrence_length; | |
| 157 }; | |
| 158 | |
| 159 /* This structure holds the SCCs of the DDG. */ | |
| 160 struct ddg_all_sccs | |
| 161 { | |
| 162 /* Array that holds the SCCs in the DDG, and their number. */ | |
| 163 ddg_scc_ptr *sccs; | |
| 164 int num_sccs; | |
| 165 | |
| 166 ddg_ptr ddg; | |
| 167 }; | |
| 168 | |
| 169 | |
| 170 ddg_ptr create_ddg (basic_block, int closing_branch_deps); | |
| 171 void free_ddg (ddg_ptr); | |
| 172 | |
| 173 void print_ddg (FILE *, ddg_ptr); | |
| 174 void vcg_print_ddg (FILE *, ddg_ptr); | |
| 175 void print_ddg_edge (FILE *, ddg_edge_ptr); | |
| 176 void print_sccs (FILE *, ddg_all_sccs_ptr, ddg_ptr); | |
| 177 | |
| 178 ddg_node_ptr get_node_of_insn (ddg_ptr, rtx); | |
| 179 | |
| 180 void find_successors (sbitmap result, ddg_ptr, sbitmap); | |
| 181 void find_predecessors (sbitmap result, ddg_ptr, sbitmap); | |
| 182 | |
| 183 ddg_all_sccs_ptr create_ddg_all_sccs (ddg_ptr); | |
| 184 void free_ddg_all_sccs (ddg_all_sccs_ptr); | |
| 185 | |
| 186 int find_nodes_on_paths (sbitmap result, ddg_ptr, sbitmap from, sbitmap to); | |
| 187 int longest_simple_path (ddg_ptr, int from, int to, sbitmap via); | |
| 188 | |
| 189 #endif /* GCC_DDG_H */ |