1 /*
2 * Copyright © 2018 Intel Corporation
3 * Copyright © 2021 Valve Corporation
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 */
24
25 #include <gtest/gtest.h>
26
27 #include "nir.h"
28 #include "nir_builder.h"
29
30 namespace {
31
32 class algebraic_test_base : public ::testing::Test {
33 protected:
34 algebraic_test_base();
35 ~algebraic_test_base();
36
37 virtual void run_pass()=0;
38
39 void test_op(nir_op op, nir_ssa_def *src0, nir_ssa_def *src1, nir_ssa_def *src2,
40 nir_ssa_def *src3, const char *desc);
41
42 void test_2src_op(nir_op op, int64_t src0, int64_t src1);
43
44 nir_variable *res_var;
45 nir_builder *b, _b;
46 };
47
algebraic_test_base()48 algebraic_test_base::algebraic_test_base()
49 {
50 glsl_type_singleton_init_or_ref();
51
52 static const nir_shader_compiler_options options = { };
53 _b = nir_builder_init_simple_shader(MESA_SHADER_COMPUTE, &options, "opt_algebraic test");
54 b = &_b;
55
56 res_var = nir_local_variable_create(b->impl, glsl_int_type(), "res");
57 }
58
~algebraic_test_base()59 algebraic_test_base::~algebraic_test_base()
60 {
61 ralloc_free(b->shader);
62
63 glsl_type_singleton_decref();
64 }
65
test_op(nir_op op,nir_ssa_def * src0,nir_ssa_def * src1,nir_ssa_def * src2,nir_ssa_def * src3,const char * desc)66 void algebraic_test_base::test_op(nir_op op, nir_ssa_def *src0, nir_ssa_def *src1,
67 nir_ssa_def *src2, nir_ssa_def *src3, const char *desc)
68 {
69 nir_ssa_def *res_deref = &nir_build_deref_var(b, res_var)->dest.ssa;
70
71 /* create optimized expression */
72 nir_intrinsic_instr *optimized_instr = nir_build_store_deref(
73 b, res_deref, nir_build_alu(b, op, src0, src1, src2, src3), 0x1);
74
75 run_pass();
76 b->cursor = nir_after_cf_list(&b->impl->body);
77
78 /* create reference expression */
79 nir_intrinsic_instr *ref_instr = nir_build_store_deref(
80 b, res_deref, nir_build_alu(b, op, src0, src1, src2, src3), 0x1);
81
82 /* test equality */
83 nir_opt_constant_folding(b->shader);
84
85 ASSERT_TRUE(nir_src_is_const(ref_instr->src[1]));
86 ASSERT_TRUE(nir_src_is_const(optimized_instr->src[1]));
87
88 int32_t ref = nir_src_as_int(ref_instr->src[1]);
89 int32_t optimized = nir_src_as_int(optimized_instr->src[1]);
90
91 EXPECT_EQ(ref, optimized) << "Test input: " << desc;
92
93 /* reset shader */
94 exec_list_make_empty(&nir_start_block(b->impl)->instr_list);
95 b->cursor = nir_after_cf_list(&b->impl->body);
96 }
97
test_2src_op(nir_op op,int64_t src0,int64_t src1)98 void algebraic_test_base::test_2src_op(nir_op op, int64_t src0, int64_t src1)
99 {
100 char desc[128];
101 snprintf(desc, sizeof(desc), "%s(%" PRId64 ", %" PRId64 ")", nir_op_infos[op].name, src0, src1);
102 test_op(op, nir_imm_int(b, src0), nir_imm_int(b, src1), NULL, NULL, desc);
103 }
104
105 class nir_opt_algebraic_test : public algebraic_test_base {
106 protected:
run_pass()107 virtual void run_pass() {
108 nir_opt_algebraic(b->shader);
109 }
110 };
111
112 class nir_opt_idiv_const_test : public algebraic_test_base {
113 protected:
run_pass()114 virtual void run_pass() {
115 nir_opt_idiv_const(b->shader, 8);
116 }
117 };
118
TEST_F(nir_opt_algebraic_test,umod_pow2_src2)119 TEST_F(nir_opt_algebraic_test, umod_pow2_src2)
120 {
121 for (int i = 0; i <= 9; i++)
122 test_2src_op(nir_op_umod, i, 4);
123 test_2src_op(nir_op_umod, UINT32_MAX, 4);
124 }
125
TEST_F(nir_opt_algebraic_test,imod_pow2_src2)126 TEST_F(nir_opt_algebraic_test, imod_pow2_src2)
127 {
128 for (int i = -9; i <= 9; i++) {
129 test_2src_op(nir_op_imod, i, 4);
130 test_2src_op(nir_op_imod, i, -4);
131 test_2src_op(nir_op_imod, i, INT32_MIN);
132 }
133 test_2src_op(nir_op_imod, INT32_MAX, 4);
134 test_2src_op(nir_op_imod, INT32_MAX, -4);
135 test_2src_op(nir_op_imod, INT32_MIN, 4);
136 test_2src_op(nir_op_imod, INT32_MIN, -4);
137 test_2src_op(nir_op_imod, INT32_MIN, INT32_MIN);
138 }
139
TEST_F(nir_opt_algebraic_test,irem_pow2_src2)140 TEST_F(nir_opt_algebraic_test, irem_pow2_src2)
141 {
142 for (int i = -9; i <= 9; i++) {
143 test_2src_op(nir_op_irem, i, 4);
144 test_2src_op(nir_op_irem, i, -4);
145 }
146 test_2src_op(nir_op_irem, INT32_MAX, 4);
147 test_2src_op(nir_op_irem, INT32_MAX, -4);
148 test_2src_op(nir_op_irem, INT32_MIN, 4);
149 test_2src_op(nir_op_irem, INT32_MIN, -4);
150 }
151
TEST_F(nir_opt_idiv_const_test,umod)152 TEST_F(nir_opt_idiv_const_test, umod)
153 {
154 for (uint32_t d : {16u, 17u, 0u, UINT32_MAX}) {
155 for (int i = 0; i <= 40; i++)
156 test_2src_op(nir_op_umod, i, d);
157 for (int i = 0; i < 20; i++)
158 test_2src_op(nir_op_umod, UINT32_MAX - i, d);
159 }
160 }
161
TEST_F(nir_opt_idiv_const_test,imod)162 TEST_F(nir_opt_idiv_const_test, imod)
163 {
164 for (int32_t d : {16, -16, 17, -17, 0, INT32_MIN, INT32_MAX}) {
165 for (int i = -40; i <= 40; i++)
166 test_2src_op(nir_op_imod, i, d);
167 for (int i = 0; i < 20; i++)
168 test_2src_op(nir_op_imod, INT32_MIN + i, d);
169 for (int i = 0; i < 20; i++)
170 test_2src_op(nir_op_imod, INT32_MAX - i, d);
171 }
172 }
173
TEST_F(nir_opt_idiv_const_test,irem)174 TEST_F(nir_opt_idiv_const_test, irem)
175 {
176 for (int32_t d : {16, -16, 17, -17, 0, INT32_MIN, INT32_MAX}) {
177 for (int i = -40; i <= 40; i++)
178 test_2src_op(nir_op_irem, i, d);
179 for (int i = 0; i < 20; i++)
180 test_2src_op(nir_op_irem, INT32_MIN + i, d);
181 for (int i = 0; i < 20; i++)
182 test_2src_op(nir_op_irem, INT32_MAX - i, d);
183 }
184 }
185
186 }
187