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- // Copyright (c) 2021 Alastair F. Donaldson
- //
- // Licensed under the Apache License, Version 2.0 (the "License");
- // you may not use this file except in compliance with the License.
- // You may obtain a copy of the License at
- //
- // http://www.apache.org/licenses/LICENSE-2.0
- //
- // Unless required by applicable law or agreed to in writing, software
- // distributed under the License is distributed on an "AS IS" BASIS,
- // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- // See the License for the specific language governing permissions and
- // limitations under the License.
- #include "source/reduce/structured_construct_to_block_reduction_opportunity_finder.h"
- #include "source/opt/build_module.h"
- #include "source/reduce/reduction_opportunity.h"
- #include "test/reduce/reduce_test_util.h"
- namespace spvtools {
- namespace reduce {
- namespace {
- TEST(StructuredConstructToBlockReductionPassTest, SimpleTest) {
- std::string shader = R"(
- OpCapability Shader
- %1 = OpExtInstImport "GLSL.std.450"
- OpMemoryModel Logical GLSL450
- OpEntryPoint Fragment %4 "main"
- OpExecutionMode %4 OriginUpperLeft
- OpSource ESSL 320
- %2 = OpTypeVoid
- %3 = OpTypeFunction %2
- %6 = OpTypeInt 32 1
- %7 = OpTypePointer Function %6
- %9 = OpConstant %6 0
- %10 = OpTypeBool
- %11 = OpConstantTrue %10
- %19 = OpConstant %6 3
- %29 = OpConstant %6 1
- %31 = OpConstant %6 2
- %4 = OpFunction %2 None %3
- %5 = OpLabel
- %8 = OpVariable %7 Function
- OpStore %8 %9
- OpSelectionMerge %13 None
- OpBranchConditional %11 %12 %13
- %12 = OpLabel
- OpBranch %13
- %13 = OpLabel
- OpBranch %14
- %14 = OpLabel
- OpLoopMerge %16 %17 None
- OpBranch %15
- %15 = OpLabel
- %18 = OpLoad %6 %8
- %20 = OpSGreaterThan %10 %18 %19
- OpSelectionMerge %22 None
- OpBranchConditional %20 %21 %22
- %21 = OpLabel
- OpBranch %16
- %22 = OpLabel
- OpBranch %17
- %17 = OpLabel
- OpBranch %14
- %16 = OpLabel
- %24 = OpLoad %6 %8
- OpSelectionMerge %28 None
- OpSwitch %24 %27 1 %25 2 %26
- %27 = OpLabel
- OpStore %8 %19
- OpBranch %28
- %25 = OpLabel
- OpStore %8 %29
- OpBranch %28
- %26 = OpLabel
- OpStore %8 %31
- OpBranch %28
- %28 = OpLabel
- OpReturn
- OpFunctionEnd
- )";
- const auto env = SPV_ENV_UNIVERSAL_1_3;
- const auto context = BuildModule(env, nullptr, shader, kReduceAssembleOption);
- const auto ops = StructuredConstructToBlockReductionOpportunityFinder()
- .GetAvailableOpportunities(context.get(), 0);
- ASSERT_EQ(3, ops.size());
- ASSERT_TRUE(ops[0]->PreconditionHolds());
- ops[0]->TryToApply();
- CheckValid(env, context.get());
- ASSERT_TRUE(ops[1]->PreconditionHolds());
- ops[1]->TryToApply();
- CheckValid(env, context.get());
- ASSERT_TRUE(ops[2]->PreconditionHolds());
- ops[2]->TryToApply();
- CheckValid(env, context.get());
- std::string expected = R"(
- OpCapability Shader
- %1 = OpExtInstImport "GLSL.std.450"
- OpMemoryModel Logical GLSL450
- OpEntryPoint Fragment %4 "main"
- OpExecutionMode %4 OriginUpperLeft
- OpSource ESSL 320
- %2 = OpTypeVoid
- %3 = OpTypeFunction %2
- %6 = OpTypeInt 32 1
- %7 = OpTypePointer Function %6
- %9 = OpConstant %6 0
- %10 = OpTypeBool
- %11 = OpConstantTrue %10
- %19 = OpConstant %6 3
- %29 = OpConstant %6 1
- %31 = OpConstant %6 2
- %4 = OpFunction %2 None %3
- %5 = OpLabel
- %8 = OpVariable %7 Function
- OpStore %8 %9
- OpBranch %13
- %13 = OpLabel
- OpBranch %14
- %14 = OpLabel
- OpBranch %16
- %16 = OpLabel
- %24 = OpLoad %6 %8
- OpBranch %28
- %28 = OpLabel
- OpReturn
- OpFunctionEnd
- )";
- CheckEqual(env, expected, context.get());
- }
- TEST(StructuredConstructToBlockReductionPassTest, CannotBeRemovedDueToUses) {
- std::string shader = R"(
- OpCapability Shader
- %1 = OpExtInstImport "GLSL.std.450"
- OpMemoryModel Logical GLSL450
- OpEntryPoint Fragment %4 "main"
- OpExecutionMode %4 OriginUpperLeft
- OpSource ESSL 320
- OpName %100 "temp"
- %2 = OpTypeVoid
- %3 = OpTypeFunction %2
- %6 = OpTypeInt 32 1
- %7 = OpTypePointer Function %6
- %9 = OpConstant %6 0
- %10 = OpTypeBool
- %11 = OpConstantTrue %10
- %19 = OpConstant %6 3
- %29 = OpConstant %6 1
- %31 = OpConstant %6 2
- %4 = OpFunction %2 None %3
- %5 = OpLabel
- %8 = OpVariable %7 Function
- OpStore %8 %9
- OpSelectionMerge %13 None
- OpBranchConditional %11 %12 %13
- %12 = OpLabel
- %100 = OpCopyObject %10 %11
- OpBranch %13
- %13 = OpLabel
- OpBranch %14
- %14 = OpLabel
- OpLoopMerge %16 %17 None
- OpBranch %15
- %15 = OpLabel
- %18 = OpLoad %6 %8
- %20 = OpSGreaterThan %10 %18 %19
- OpSelectionMerge %22 None
- OpBranchConditional %20 %21 %22
- %21 = OpLabel
- OpBranch %16
- %22 = OpLabel
- OpBranch %17
- %17 = OpLabel
- OpBranch %14
- %16 = OpLabel
- %101 = OpCopyObject %6 %18
- %24 = OpLoad %6 %8
- OpSelectionMerge %28 None
- OpSwitch %24 %27 1 %25 2 %26
- %27 = OpLabel
- OpStore %8 %19
- %102 = OpCopyObject %10 %11
- OpBranch %28
- %25 = OpLabel
- OpStore %8 %29
- OpBranch %28
- %26 = OpLabel
- OpStore %8 %31
- OpBranch %28
- %28 = OpLabel
- %103 = OpPhi %10 %102 %27 %11 %25 %11 %26
- OpReturn
- OpFunctionEnd
- )";
- const auto env = SPV_ENV_UNIVERSAL_1_3;
- const auto context = BuildModule(env, nullptr, shader, kReduceAssembleOption);
- const auto ops = StructuredConstructToBlockReductionOpportunityFinder()
- .GetAvailableOpportunities(context.get(), 0);
- ASSERT_TRUE(ops.empty());
- }
- TEST(StructuredConstructToBlockReductionPassTest,
- CannotBeRemovedDueToOpPhiAtMerge) {
- std::string shader = R"(
- OpCapability Shader
- %1 = OpExtInstImport "GLSL.std.450"
- OpMemoryModel Logical GLSL450
- OpEntryPoint Fragment %4 "main"
- OpExecutionMode %4 OriginUpperLeft
- OpSource ESSL 320
- %2 = OpTypeVoid
- %3 = OpTypeFunction %2
- %10 = OpTypeBool
- %11 = OpConstantTrue %10
- %4 = OpFunction %2 None %3
- %5 = OpLabel
- OpSelectionMerge %13 None
- OpBranchConditional %11 %12 %13
- %12 = OpLabel
- OpBranch %13
- %13 = OpLabel
- %101 = OpPhi %10 %11 %5 %11 %12
- OpReturn
- OpFunctionEnd
- )";
- const auto env = SPV_ENV_UNIVERSAL_1_3;
- const auto context = BuildModule(env, nullptr, shader, kReduceAssembleOption);
- const auto ops = StructuredConstructToBlockReductionOpportunityFinder()
- .GetAvailableOpportunities(context.get(), 0);
- ASSERT_TRUE(ops.empty());
- }
- } // namespace
- } // namespace reduce
- } // namespace spvtools
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