1/*
2 * Copyright 2011 Tom Stellard <tstellar@gmail.com>
3 *
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining
7 * a copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sublicense, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial
16 * portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
21 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
22 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
23 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
24 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 */
27
28#ifndef RADEON_VARIABLE_H
29#define RADEON_VARIABLE_H
30
31#include "radeon_compiler.h"
32
33struct radeon_compiler;
34struct rc_list;
35struct rc_reader_data;
36struct rc_readers;
37
38struct live_intervals {
39	int Start;
40	int End;
41	int Used;
42};
43
44struct rc_variable {
45	struct radeon_compiler * C;
46	struct rc_dst_register Dst;
47
48	struct rc_instruction * Inst;
49	unsigned int ReaderCount;
50	struct rc_reader * Readers;
51	struct live_intervals Live[4];
52
53	/* A friend is a variable that shares a reader with another variable.
54	 */
55	struct rc_variable * Friend;
56};
57
58void rc_variable_change_dst(
59	struct rc_variable * var,
60	unsigned int new_index,
61	unsigned int new_writemask);
62
63void rc_variable_compute_live_intervals(struct rc_variable * var);
64
65void rc_variable_add_friend(
66	struct rc_variable * var,
67	struct rc_variable * friend);
68
69struct rc_variable * rc_variable(
70	struct radeon_compiler * c,
71	unsigned int DstFile,
72	unsigned int DstIndex,
73	unsigned int DstWriteMask,
74	struct rc_reader_data * reader_data);
75
76struct rc_list * rc_get_variables(struct radeon_compiler * c);
77
78unsigned int rc_variable_writemask_sum(struct rc_variable * var);
79
80struct rc_list * rc_variable_readers_union(struct rc_variable * var);
81
82struct rc_list * rc_variable_list_get_writers(
83	struct rc_list * var_list,
84	unsigned int src_type,
85	void * src);
86
87struct rc_list * rc_variable_list_get_writers_one_reader(
88	struct rc_list * var_list,
89	unsigned int src_type,
90	void * src);
91
92void rc_variable_print(struct rc_variable * var);
93
94#endif /* RADEON_VARIABLE_H */
95