diff options
Diffstat (limited to 'src/compiler/nir/tests/control_flow_tests.cpp')
| -rw-r--r-- | src/compiler/nir/tests/control_flow_tests.cpp | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/src/compiler/nir/tests/control_flow_tests.cpp b/src/compiler/nir/tests/control_flow_tests.cpp new file mode 100644 index 00000000000..b9379ef3b06 --- /dev/null +++ b/src/compiler/nir/tests/control_flow_tests.cpp @@ -0,0 +1,148 @@ +/* + * Copyright © 2015 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ +#include <gtest/gtest.h> +#include "nir.h" +#include "nir_builder.h" + +class nir_cf_test : public ::testing::Test { +protected: + nir_cf_test(); + ~nir_cf_test(); + + nir_builder b; +}; + +nir_cf_test::nir_cf_test() +{ + static const nir_shader_compiler_options options = { }; + nir_builder_init_simple_shader(&b, NULL, MESA_SHADER_VERTEX, &options); +} + +nir_cf_test::~nir_cf_test() +{ + ralloc_free(b.shader); +} + +TEST_F(nir_cf_test, delete_break_in_loop) +{ + /* Create IR: + * + * while (...) { break; } + */ + nir_loop *loop = nir_loop_create(b.shader); + nir_cf_node_insert(nir_after_cf_list(&b.impl->body), &loop->cf_node); + + b.cursor = nir_after_cf_list(&loop->body); + + nir_jump_instr *jump = nir_jump_instr_create(b.shader, nir_jump_break); + nir_builder_instr_insert(&b, &jump->instr); + + /* At this point, we should have: + * + * impl main { + * block block_0: + * // preds: + * // succs: block_1 + * loop { + * block block_1: + * // preds: block_0 + * break + * // succs: block_2 + * } + * block block_2: + * // preds: block_1 + * // succs: block_3 + * block block_3: + * } + */ + nir_block *block_0 = nir_start_block(b.impl); + nir_block *block_1 = nir_cf_node_as_block(nir_loop_first_cf_node(loop)); + nir_block *block_2 = nir_cf_node_as_block(nir_cf_node_next(&loop->cf_node)); + nir_block *block_3 = b.impl->end_block; + ASSERT_EQ(nir_cf_node_block, block_0->cf_node.type); + ASSERT_EQ(nir_cf_node_block, block_1->cf_node.type); + ASSERT_EQ(nir_cf_node_block, block_2->cf_node.type); + ASSERT_EQ(nir_cf_node_block, block_3->cf_node.type); + + /* Verify the successors and predecessors. */ + EXPECT_EQ(block_1, block_0->successors[0]); + EXPECT_EQ(NULL, block_0->successors[1]); + EXPECT_EQ(block_2, block_1->successors[0]); + EXPECT_EQ(NULL, block_1->successors[1]); + EXPECT_EQ(block_3, block_2->successors[0]); + EXPECT_EQ(NULL, block_2->successors[1]); + EXPECT_EQ(NULL, block_3->successors[0]); + EXPECT_EQ(NULL, block_3->successors[1]); + EXPECT_EQ(0, block_0->predecessors->entries); + EXPECT_EQ(1, block_1->predecessors->entries); + EXPECT_EQ(1, block_2->predecessors->entries); + EXPECT_EQ(1, block_3->predecessors->entries); + EXPECT_TRUE(_mesa_set_search(block_1->predecessors, block_0)); + EXPECT_TRUE(_mesa_set_search(block_2->predecessors, block_1)); + EXPECT_TRUE(_mesa_set_search(block_3->predecessors, block_2)); + + nir_print_shader(b.shader, stderr); + + /* Now remove the break. */ + nir_instr_remove(&jump->instr); + + nir_print_shader(b.shader, stderr); + + /* At this point, we should have: + * + * impl main { + * block block_0: + * // preds: + * // succs: block_1 + * loop { + * block block_1: + * // preds: block_0 block_1 + * // succs: block_1 + * } + * block block_2: + * // preds: block_1 + * // succs: block_3 + * block block_3: + * } + * + * Re-verify the predecessors and successors. + */ + EXPECT_EQ(block_1, block_0->successors[0]); + EXPECT_EQ(NULL, block_0->successors[1]); + EXPECT_EQ(block_1, block_1->successors[0]); /* back to itself */ + EXPECT_EQ(block_2, block_1->successors[1]); /* fake successor */ + EXPECT_EQ(block_3, block_2->successors[0]); + EXPECT_EQ(NULL, block_2->successors[1]); + EXPECT_EQ(NULL, block_3->successors[0]); + EXPECT_EQ(NULL, block_3->successors[1]); + EXPECT_EQ(0, block_0->predecessors->entries); + EXPECT_EQ(2, block_1->predecessors->entries); + EXPECT_EQ(1, block_2->predecessors->entries); + EXPECT_EQ(1, block_3->predecessors->entries); + EXPECT_TRUE(_mesa_set_search(block_1->predecessors, block_0)); + EXPECT_TRUE(_mesa_set_search(block_1->predecessors, block_1)); + EXPECT_TRUE(_mesa_set_search(block_2->predecessors, block_1)); + EXPECT_TRUE(_mesa_set_search(block_3->predecessors, block_2)); + + nir_metadata_require(b.impl, nir_metadata_dominance); +} |