mirror of
https://github.com/KhronosGroup/SPIRV-Tools
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502e982956
This fixes a problem where TransformationInlineFunction could lead to distinct instructions having identical unique ids. It adds a validity check to detect this problem in general. Fixes #3911.
134 lines
4.7 KiB
C++
134 lines
4.7 KiB
C++
// Copyright (c) 2020 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "source/fuzz/comparator_deep_blocks_first.h"
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#include "gtest/gtest.h"
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#include "source/fuzz/fact_manager/fact_manager.h"
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#include "source/fuzz/fuzzer_util.h"
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#include "source/fuzz/pseudo_random_generator.h"
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#include "source/fuzz/transformation_context.h"
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#include "test/fuzz/fuzz_test_util.h"
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namespace spvtools {
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namespace fuzz {
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namespace {
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std::string shader = R"(
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OpCapability Shader
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%1 = OpExtInstImport "GLSL.std.450"
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OpMemoryModel Logical GLSL450
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OpEntryPoint Fragment %2 "main"
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OpExecutionMode %2 OriginUpperLeft
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OpSource ESSL 310
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%3 = OpTypeVoid
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%4 = OpTypeFunction %3
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%5 = OpTypeBool
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%6 = OpConstantTrue %5
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%7 = OpTypeInt 32 1
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%8 = OpTypePointer Function %7
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%9 = OpConstant %7 1
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%10 = OpConstant %7 10
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%11 = OpConstant %7 2
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%2 = OpFunction %3 None %4
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%12 = OpLabel
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OpSelectionMerge %13 None
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OpBranchConditional %6 %14 %15
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%14 = OpLabel
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OpBranch %13
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%15 = OpLabel
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OpBranch %16
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%16 = OpLabel
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OpLoopMerge %17 %18 None
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OpBranch %19
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%19 = OpLabel
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OpBranchConditional %6 %20 %17
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%20 = OpLabel
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OpSelectionMerge %21 None
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OpBranchConditional %6 %22 %23
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%22 = OpLabel
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OpBranch %21
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%23 = OpLabel
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OpBranch %21
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%21 = OpLabel
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OpBranch %18
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%18 = OpLabel
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OpBranch %16
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%17 = OpLabel
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OpBranch %13
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%13 = OpLabel
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OpReturn
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OpFunctionEnd
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)";
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TEST(ComparatorDeepBlocksFirstTest, Compare) {
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const auto env = SPV_ENV_UNIVERSAL_1_5;
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const auto consumer = nullptr;
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const auto context = BuildModule(env, consumer, shader, kFuzzAssembleOption);
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spvtools::ValidatorOptions validator_options;
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ASSERT_TRUE(fuzzerutil::IsValidAndWellFormed(context.get(), validator_options,
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kConsoleMessageConsumer));
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TransformationContext transformation_context(
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MakeUnique<FactManager>(context.get()), validator_options);
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auto is_deeper = ComparatorDeepBlocksFirst(context.get());
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// The block ids and the corresponding depths are:
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// 12, 13 -> depth 0
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// 14, 15, 16, 17 -> depth 1
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// 18, 19, 20, 21 -> depth 2
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// 22, 23 -> depth 3
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// Perform some comparisons and check that they return true iff the first
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// block is deeper than the second.
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ASSERT_FALSE(is_deeper(12, 12));
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ASSERT_FALSE(is_deeper(12, 13));
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ASSERT_FALSE(is_deeper(12, 14));
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ASSERT_FALSE(is_deeper(12, 18));
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ASSERT_FALSE(is_deeper(12, 22));
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ASSERT_TRUE(is_deeper(14, 12));
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ASSERT_FALSE(is_deeper(14, 15));
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ASSERT_FALSE(is_deeper(15, 14));
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ASSERT_FALSE(is_deeper(14, 18));
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ASSERT_TRUE(is_deeper(18, 12));
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ASSERT_TRUE(is_deeper(18, 16));
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}
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TEST(ComparatorDeepBlocksFirstTest, Sort) {
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const auto env = SPV_ENV_UNIVERSAL_1_5;
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const auto consumer = nullptr;
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const auto context = BuildModule(env, consumer, shader, kFuzzAssembleOption);
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spvtools::ValidatorOptions validator_options;
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ASSERT_TRUE(fuzzerutil::IsValidAndWellFormed(context.get(), validator_options,
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kConsoleMessageConsumer));
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TransformationContext transformation_context(
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MakeUnique<FactManager>(context.get()), validator_options);
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// Check that, sorting using the comparator, the blocks are ordered from more
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// deeply nested to less deeply nested.
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// 17 has depth 1, 20 has depth 2, 13 has depth 0.
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std::vector<opt::BasicBlock*> blocks = {context->get_instr_block(17),
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context->get_instr_block(20),
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context->get_instr_block(13)};
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std::sort(blocks.begin(), blocks.end(),
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ComparatorDeepBlocksFirst(context.get()));
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// Check that the blocks are in the correct order.
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ASSERT_EQ(blocks[0]->id(), 20);
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ASSERT_EQ(blocks[1]->id(), 17);
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ASSERT_EQ(blocks[2]->id(), 13);
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}
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} // namespace
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} // namespace fuzz
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} // namespace spvtools
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