1 /*
2  * Copyright © 2012 Intel Corporation
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice (including the next
12  * paragraph) shall be included in all copies or substantial portions of the
13  * Software.
14  *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21  * IN THE SOFTWARE.
22  *
23  * Authors:
24  *    Eric Anholt <eric@anholt.net>
25  *
26  */
27 
28 #include "brw_fs.h"
29 
30 class fs_bblock_link : public exec_node {
31 public:
fs_bblock_link(fs_bblock * block)32    fs_bblock_link(fs_bblock *block)
33       : block(block)
34    {
35    }
36 
37    fs_bblock *block;
38 };
39 
40 class fs_bblock {
41 public:
new(size_t size,void * ctx)42    static void* operator new(size_t size, void *ctx)
43    {
44       void *node;
45 
46       node = rzalloc_size(ctx, size);
47       assert(node != NULL);
48 
49       return node;
50    }
51 
52    fs_bblock_link *make_list(void *mem_ctx);
53 
54    fs_bblock();
55 
56    void add_successor(void *mem_ctx, fs_bblock *successor);
57 
58    fs_inst *start;
59    fs_inst *end;
60 
61    int start_ip;
62    int end_ip;
63 
64    exec_list parents;
65    exec_list children;
66    int block_num;
67 };
68 
69 class fs_cfg {
70 public:
new(size_t size,void * ctx)71    static void* operator new(size_t size, void *ctx)
72    {
73       void *node;
74 
75       node = rzalloc_size(ctx, size);
76       assert(node != NULL);
77 
78       return node;
79    }
80 
81    fs_cfg(fs_visitor *v);
82    ~fs_cfg();
83    fs_bblock *new_block();
84    void set_next_block(fs_bblock *block);
85    void make_block_array();
86 
87    /** @{
88     *
89     * Used while generating the block list.
90     */
91    fs_bblock *cur;
92    int ip;
93    /** @} */
94 
95    void *mem_ctx;
96 
97    /** Ordered list (by ip) of basic blocks */
98    exec_list block_list;
99    fs_bblock **blocks;
100    int num_blocks;
101 };
102