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https://github.com/KhronosGroup/SPIRV-Tools
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efc5061929
Remove the CFG requirement when querying a dominator/post-dominator from an IRContext. Updated all uses of the function and tests.
120 lines
3.6 KiB
C++
120 lines
3.6 KiB
C++
// Copyright (c) 2017 Google Inc.
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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 <string>
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#include <vector>
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#include <gmock/gmock.h>
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#include "../assembly_builder.h"
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#include "../function_utils.h"
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#include "../pass_fixture.h"
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#include "../pass_utils.h"
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#include "opt/dominator_analysis.h"
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#include "opt/pass.h"
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namespace {
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using namespace spvtools;
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using ::testing::UnorderedElementsAre;
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using PassClassTest = PassTest<::testing::Test>;
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/*
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Generated from the following GLSL
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#version 440 core
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void main() {
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for (int i = 0; i < 1; i++) {
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break;
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}
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}
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*/
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TEST_F(PassClassTest, UnreachableNestedIfs) {
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const std::string text = 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 %4 "main"
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OpExecutionMode %4 OriginUpperLeft
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OpSource GLSL 440
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OpName %4 "main"
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OpName %8 "i"
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%2 = OpTypeVoid
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%3 = OpTypeFunction %2
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%6 = OpTypeInt 32 1
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%7 = OpTypePointer Function %6
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%9 = OpConstant %6 0
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%16 = OpConstant %6 1
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%17 = OpTypeBool
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%8 = OpVariable %7 Function
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OpStore %8 %9
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OpBranch %10
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%10 = OpLabel
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OpLoopMerge %12 %13 None
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OpBranch %14
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%14 = OpLabel
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%15 = OpLoad %6 %8
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%18 = OpSLessThan %17 %15 %16
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OpBranchConditional %18 %11 %12
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%11 = OpLabel
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OpBranch %12
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%13 = OpLabel
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%20 = OpLoad %6 %8
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%21 = OpIAdd %6 %20 %16
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OpStore %8 %21
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OpBranch %10
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%12 = OpLabel
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OpReturn
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OpFunctionEnd
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)";
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// clang-format on
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std::unique_ptr<ir::IRContext> context =
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BuildModule(SPV_ENV_UNIVERSAL_1_1, nullptr, text,
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SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS);
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ir::Module* module = context->module();
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EXPECT_NE(nullptr, module) << "Assembling failed for shader:\n"
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<< text << std::endl;
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const ir::Function* f = spvtest::GetFunction(module, 4);
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opt::DominatorAnalysis* analysis = context->GetDominatorAnalysis(f);
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EXPECT_TRUE(analysis->Dominates(5, 5));
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EXPECT_TRUE(analysis->Dominates(5, 10));
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EXPECT_TRUE(analysis->Dominates(5, 14));
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EXPECT_TRUE(analysis->Dominates(5, 11));
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EXPECT_TRUE(analysis->Dominates(5, 12));
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EXPECT_TRUE(analysis->Dominates(10, 10));
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EXPECT_TRUE(analysis->Dominates(10, 14));
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EXPECT_TRUE(analysis->Dominates(10, 11));
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EXPECT_TRUE(analysis->Dominates(10, 12));
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EXPECT_TRUE(analysis->Dominates(14, 14));
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EXPECT_TRUE(analysis->Dominates(14, 11));
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EXPECT_TRUE(analysis->Dominates(14, 12));
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EXPECT_TRUE(analysis->Dominates(11, 11));
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EXPECT_TRUE(analysis->Dominates(12, 12));
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EXPECT_TRUE(analysis->StrictlyDominates(5, 10));
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EXPECT_TRUE(analysis->StrictlyDominates(5, 14));
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EXPECT_TRUE(analysis->StrictlyDominates(5, 11));
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EXPECT_TRUE(analysis->StrictlyDominates(5, 12));
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EXPECT_TRUE(analysis->StrictlyDominates(10, 14));
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EXPECT_TRUE(analysis->StrictlyDominates(10, 11));
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EXPECT_TRUE(analysis->StrictlyDominates(10, 12));
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EXPECT_TRUE(analysis->StrictlyDominates(14, 11));
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EXPECT_TRUE(analysis->StrictlyDominates(14, 12));
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}
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} // namespace
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