1 /*
2 * Copyright 2013 Vadim Girlin <vadimgirlin@gmail.com>
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 * on the rights to use, copy, modify, merge, publish, distribute, sub
8 * license, and/or sell copies of the Software, and to permit persons to whom
9 * the 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 NON-INFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
21 * USE OR OTHER DEALINGS IN THE SOFTWARE.
22 *
23 * Authors:
24 * Vadim Girlin
25 */
26
27 #ifndef SB_EXPR_H_
28 #define SB_EXPR_H_
29
30 namespace r600_sb {
31
float_clamp(float v)32 inline float float_clamp(float v) {
33 return v < 0.0f ? 0.0f : (v > 1.0f ? 1.0f : v);
34 }
35
36 value* get_select_value_for_em(shader &sh, value *em);
37
38 void convert_predset_to_set(shader &sh, alu_node *a);
39 unsigned invert_setcc_condition(unsigned cc, bool &swap_args);
40 unsigned get_setcc_op(unsigned cc, unsigned cmp_type, bool int_dst);
41 unsigned get_predsetcc_op(unsigned cc, unsigned cmp_type);
42 unsigned get_killcc_op(unsigned cc, unsigned cmp_type);
43 unsigned get_cndcc_op(unsigned cc, unsigned cmp_type);
44
45 void convert_to_mov(alu_node &n, value *src,
46 bool neg = false, bool abs = false);
47
48 class expr_handler {
49
50 shader &sh;
51 value_table &vt;
52
53 public:
54
55 expr_handler(shader &sh);
56
57 bool equal(value *l, value *r);
58 bool defs_equal(value *l, value *r);
59 bool args_equal(const vvec &l, const vvec &r);
60 bool ops_equal(const alu_node *l, const alu_node *r);
61 bool ivars_equal(value *l, value *r);
62
63 value* get_const(const literal &l);
64
65 bool try_fold(value *v);
66 bool try_fold(node *n);
67
68 bool fold(node &n);
69 bool fold(container_node &n);
70 bool fold(alu_node &n);
71 bool fold(fetch_node &n);
72 bool fold(cf_node &n);
73
74 bool fold_setcc(alu_node &n);
75
76 bool fold_alu_op1(alu_node &n);
77 bool fold_alu_op2(alu_node &n);
78 bool fold_alu_op3(alu_node &n);
79
80 bool fold_mul_add(alu_node *n);
81 bool eval_const_op(unsigned op, literal &r, literal cv0, literal cv1);
82 bool fold_assoc(alu_node *n);
83
84 static void apply_alu_src_mod(const bc_alu &bc, unsigned src, literal &v);
85 static void apply_alu_dst_mod(const bc_alu &bc, literal &v);
86
87 void assign_source(value *dst, value *src);
88
89 static bool evaluate_condition(unsigned alu_cnd_flags, literal s1,
90 literal s2);
91 };
92
93 } // namespace r600_sb
94
95 #endif /* SB_EXPR_H_ */
96