2 * Copyright © 2015 Intel Corporation
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6 * to deal in the Software without restriction, including without limitation
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9 * Software is furnished to do so, subject to the following conditions:
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
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
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21 * DEALINGS IN THE SOFTWARE.
23 #include <gtest/gtest.h>
25 #include "nir_builder.h"
27 class nir_cf_test
: public ::testing::Test
{
35 nir_cf_test::nir_cf_test()
37 static const nir_shader_compiler_options options
= { };
38 nir_builder_init_simple_shader(&b
, NULL
, MESA_SHADER_VERTEX
, &options
);
41 nir_cf_test::~nir_cf_test()
43 ralloc_free(b
.shader
);
46 TEST_F(nir_cf_test
, delete_break_in_loop
)
50 * while (...) { break; }
52 nir_loop
*loop
= nir_loop_create(b
.shader
);
53 nir_cf_node_insert(nir_after_cf_list(&b
.impl
->body
), &loop
->cf_node
);
55 b
.cursor
= nir_after_cf_list(&loop
->body
);
57 nir_jump_instr
*jump
= nir_jump_instr_create(b
.shader
, nir_jump_break
);
58 nir_builder_instr_insert(&b
, &jump
->instr
);
60 /* At this point, we should have:
78 nir_block
*block_0
= nir_start_block(b
.impl
);
79 nir_block
*block_1
= nir_cf_node_as_block(nir_loop_first_cf_node(loop
));
80 nir_block
*block_2
= nir_cf_node_as_block(nir_cf_node_next(&loop
->cf_node
));
81 nir_block
*block_3
= b
.impl
->end_block
;
82 ASSERT_EQ(nir_cf_node_block
, block_0
->cf_node
.type
);
83 ASSERT_EQ(nir_cf_node_block
, block_1
->cf_node
.type
);
84 ASSERT_EQ(nir_cf_node_block
, block_2
->cf_node
.type
);
85 ASSERT_EQ(nir_cf_node_block
, block_3
->cf_node
.type
);
87 /* Verify the successors and predecessors. */
88 EXPECT_EQ(block_1
, block_0
->successors
[0]);
89 EXPECT_EQ(NULL
, block_0
->successors
[1]);
90 EXPECT_EQ(block_2
, block_1
->successors
[0]);
91 EXPECT_EQ(NULL
, block_1
->successors
[1]);
92 EXPECT_EQ(block_3
, block_2
->successors
[0]);
93 EXPECT_EQ(NULL
, block_2
->successors
[1]);
94 EXPECT_EQ(NULL
, block_3
->successors
[0]);
95 EXPECT_EQ(NULL
, block_3
->successors
[1]);
96 EXPECT_EQ(0, block_0
->predecessors
->entries
);
97 EXPECT_EQ(1, block_1
->predecessors
->entries
);
98 EXPECT_EQ(1, block_2
->predecessors
->entries
);
99 EXPECT_EQ(1, block_3
->predecessors
->entries
);
100 EXPECT_TRUE(_mesa_set_search(block_1
->predecessors
, block_0
));
101 EXPECT_TRUE(_mesa_set_search(block_2
->predecessors
, block_1
));
102 EXPECT_TRUE(_mesa_set_search(block_3
->predecessors
, block_2
));
104 nir_print_shader(b
.shader
, stderr
);
106 /* Now remove the break. */
107 nir_instr_remove(&jump
->instr
);
109 nir_print_shader(b
.shader
, stderr
);
111 /* At this point, we should have:
119 * // preds: block_0 block_1
128 * Re-verify the predecessors and successors.
130 EXPECT_EQ(block_1
, block_0
->successors
[0]);
131 EXPECT_EQ(NULL
, block_0
->successors
[1]);
132 EXPECT_EQ(block_1
, block_1
->successors
[0]); /* back to itself */
133 EXPECT_EQ(block_2
, block_1
->successors
[1]); /* fake successor */
134 EXPECT_EQ(block_3
, block_2
->successors
[0]);
135 EXPECT_EQ(NULL
, block_2
->successors
[1]);
136 EXPECT_EQ(NULL
, block_3
->successors
[0]);
137 EXPECT_EQ(NULL
, block_3
->successors
[1]);
138 EXPECT_EQ(0, block_0
->predecessors
->entries
);
139 EXPECT_EQ(2, block_1
->predecessors
->entries
);
140 EXPECT_EQ(1, block_2
->predecessors
->entries
);
141 EXPECT_EQ(1, block_3
->predecessors
->entries
);
142 EXPECT_TRUE(_mesa_set_search(block_1
->predecessors
, block_0
));
143 EXPECT_TRUE(_mesa_set_search(block_1
->predecessors
, block_1
));
144 EXPECT_TRUE(_mesa_set_search(block_2
->predecessors
, block_1
));
145 EXPECT_TRUE(_mesa_set_search(block_3
->predecessors
, block_2
));
147 nir_metadata_require(b
.impl
, nir_metadata_dominance
);