296 lines
8.8 KiB
C++
296 lines
8.8 KiB
C++
// Copyright (c) 2019 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/reduce/remove_function_reduction_opportunity_finder.h"
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#include "source/opt/build_module.h"
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#include "source/reduce/reduction_opportunity.h"
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#include "test/reduce/reduce_test_util.h"
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namespace spvtools {
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namespace reduce {
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namespace {
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// Helper to count the number of functions in the module.
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// Remove if there turns out to be a more direct way to do this.
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uint32_t count_functions(opt::IRContext* context) {
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uint32_t result = 0;
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for (auto& function : *context->module()) {
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(void)(function);
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++result;
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}
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return result;
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}
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TEST(RemoveFunctionTest, BasicCheck) {
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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 %4 "main"
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OpExecutionMode %4 OriginUpperLeft
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OpSource ESSL 310
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%2 = OpTypeVoid
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%3 = OpTypeFunction %2
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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OpReturn
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OpFunctionEnd
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%6 = OpFunction %2 None %3
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%7 = OpLabel
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OpReturn
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OpFunctionEnd
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%8 = OpFunction %2 None %3
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%9 = OpLabel
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%10 = OpFunctionCall %2 %6
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OpReturn
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OpFunctionEnd
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)";
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const auto env = SPV_ENV_UNIVERSAL_1_3;
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const auto consumer = nullptr;
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const auto context =
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BuildModule(env, consumer, shader, kReduceAssembleOption);
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ASSERT_EQ(3, count_functions(context.get()));
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auto ops =
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RemoveFunctionReductionOpportunityFinder().GetAvailableOpportunities(
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context.get());
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ASSERT_EQ(1, ops.size());
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ASSERT_TRUE(ops[0]->PreconditionHolds());
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ops[0]->TryToApply();
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ASSERT_EQ(2, count_functions(context.get()));
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std::string after_first = 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 ESSL 310
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%2 = OpTypeVoid
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%3 = OpTypeFunction %2
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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OpReturn
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OpFunctionEnd
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%6 = OpFunction %2 None %3
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%7 = OpLabel
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OpReturn
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OpFunctionEnd
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)";
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CheckEqual(env, after_first, context.get());
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ops = RemoveFunctionReductionOpportunityFinder().GetAvailableOpportunities(
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context.get());
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ASSERT_EQ(1, ops.size());
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ASSERT_TRUE(ops[0]->PreconditionHolds());
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ops[0]->TryToApply();
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ASSERT_EQ(1, count_functions(context.get()));
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std::string after_second = 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 ESSL 310
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%2 = OpTypeVoid
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%3 = OpTypeFunction %2
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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OpReturn
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OpFunctionEnd
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)";
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CheckEqual(env, after_second, context.get());
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}
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TEST(RemoveFunctionTest, NothingToRemove) {
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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 %4 "main"
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OpExecutionMode %4 OriginUpperLeft
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OpSource ESSL 310
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%2 = OpTypeVoid
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%3 = OpTypeFunction %2
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%11 = OpFunctionCall %2 %8
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OpReturn
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OpFunctionEnd
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%6 = OpFunction %2 None %3
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%7 = OpLabel
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OpReturn
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OpFunctionEnd
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%8 = OpFunction %2 None %3
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%9 = OpLabel
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%10 = OpFunctionCall %2 %6
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OpReturn
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OpFunctionEnd
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)";
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const auto env = SPV_ENV_UNIVERSAL_1_3;
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const auto consumer = nullptr;
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const auto context =
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BuildModule(env, consumer, shader, kReduceAssembleOption);
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auto ops =
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RemoveFunctionReductionOpportunityFinder().GetAvailableOpportunities(
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context.get());
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ASSERT_EQ(0, ops.size());
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}
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TEST(RemoveFunctionTest, TwoRemovableFunctions) {
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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 %4 "main"
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OpExecutionMode %4 OriginUpperLeft
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OpSource ESSL 310
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%2 = OpTypeVoid
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%3 = OpTypeFunction %2
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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OpReturn
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OpFunctionEnd
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%6 = OpFunction %2 None %3
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%7 = OpLabel
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OpReturn
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OpFunctionEnd
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%8 = OpFunction %2 None %3
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%9 = OpLabel
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OpReturn
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OpFunctionEnd
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)";
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const auto env = SPV_ENV_UNIVERSAL_1_3;
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const auto consumer = nullptr;
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const auto context =
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BuildModule(env, consumer, shader, kReduceAssembleOption);
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ASSERT_EQ(3, count_functions(context.get()));
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auto ops =
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RemoveFunctionReductionOpportunityFinder().GetAvailableOpportunities(
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context.get());
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ASSERT_EQ(2, ops.size());
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ASSERT_TRUE(ops[0]->PreconditionHolds());
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ops[0]->TryToApply();
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ASSERT_EQ(2, count_functions(context.get()));
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ASSERT_TRUE(ops[1]->PreconditionHolds());
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ops[1]->TryToApply();
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ASSERT_EQ(1, count_functions(context.get()));
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std::string after = 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 ESSL 310
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%2 = OpTypeVoid
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%3 = OpTypeFunction %2
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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OpReturn
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OpFunctionEnd
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)";
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CheckEqual(env, after, context.get());
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}
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TEST(RemoveFunctionTest, NoRemovalsDueToOpName) {
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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 %4 "main"
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OpExecutionMode %4 OriginUpperLeft
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OpSource ESSL 310
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OpName %4 "main"
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OpName %6 "foo("
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OpName %8 "bar("
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%2 = OpTypeVoid
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%3 = OpTypeFunction %2
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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OpReturn
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OpFunctionEnd
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%6 = OpFunction %2 None %3
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%7 = OpLabel
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OpReturn
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OpFunctionEnd
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%8 = OpFunction %2 None %3
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%9 = OpLabel
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OpReturn
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OpFunctionEnd
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)";
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const auto env = SPV_ENV_UNIVERSAL_1_3;
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const auto consumer = nullptr;
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const auto context =
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BuildModule(env, consumer, shader, kReduceAssembleOption);
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auto ops =
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RemoveFunctionReductionOpportunityFinder().GetAvailableOpportunities(
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context.get());
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ASSERT_EQ(0, ops.size());
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}
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TEST(RemoveFunctionTest, NoRemovalDueToLinkageDecoration) {
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// The non-entry point function is not removable because it is referenced by a
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// linkage decoration. Thus no function can be removed.
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std::string shader = R"(
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OpCapability Shader
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OpCapability Linkage
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OpMemoryModel Logical GLSL450
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OpEntryPoint Fragment %1 "main"
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OpName %1 "main"
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OpDecorate %2 LinkageAttributes "ExportedFunc" Export
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%4 = OpTypeVoid
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%5 = OpTypeFunction %4
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%1 = OpFunction %4 None %5
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%6 = OpLabel
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OpReturn
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OpFunctionEnd
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%2 = OpFunction %4 None %5
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%7 = OpLabel
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OpReturn
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OpFunctionEnd
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)";
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const auto env = SPV_ENV_UNIVERSAL_1_3;
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const auto consumer = nullptr;
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const auto context =
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BuildModule(env, consumer, shader, kReduceAssembleOption);
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auto ops =
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RemoveFunctionReductionOpportunityFinder().GetAvailableOpportunities(
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context.get());
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ASSERT_EQ(0, ops.size());
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}
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} // namespace
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} // namespace reduce
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} // namespace spvtools
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