SPIRV-Tools/test/opt/function_test.cpp

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// Copyright (c) 2018 Google LLC
//
// 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 <memory>
#include <sstream>
#include <string>
#include <vector>
#include "function_utils.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "source/opt/build_module.h"
#include "source/opt/ir_context.h"
namespace spvtools {
namespace opt {
namespace {
using ::testing::Eq;
TEST(FunctionTest, HasEarlyReturn) {
std::string shader = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Vertex %6 "main"
; Types
%2 = OpTypeBool
%3 = OpTypeVoid
%4 = OpTypeFunction %3
; Constants
%5 = OpConstantTrue %2
; main function without early return
%6 = OpFunction %3 None %4
%7 = OpLabel
OpBranch %8
%8 = OpLabel
OpBranch %9
%9 = OpLabel
OpBranch %10
%10 = OpLabel
OpReturn
OpFunctionEnd
; function with early return
%11 = OpFunction %3 None %4
%12 = OpLabel
OpSelectionMerge %15 None
OpBranchConditional %5 %13 %14
%13 = OpLabel
OpReturn
%14 = OpLabel
OpBranch %15
%15 = OpLabel
OpReturn
OpFunctionEnd
)";
const auto context =
BuildModule(SPV_ENV_UNIVERSAL_1_1, nullptr, shader,
SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS);
// Tests |function| without early return.
auto* function = spvtest::GetFunction(context->module(), 6);
ASSERT_FALSE(function->HasEarlyReturn());
// Tests |function| with early return.
function = spvtest::GetFunction(context->module(), 11);
ASSERT_TRUE(function->HasEarlyReturn());
}
TEST(FunctionTest, IsNotRecursive) {
const std::string text = R"(
OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %1 "main"
OpExecutionMode %1 OriginUpperLeft
OpDecorate %2 DescriptorSet 439418829
%void = OpTypeVoid
%4 = OpTypeFunction %void
%float = OpTypeFloat 32
%_struct_6 = OpTypeStruct %float %float
%7 = OpTypeFunction %_struct_6
%1 = OpFunction %void Pure|Const %4
%8 = OpLabel
%2 = OpFunctionCall %_struct_6 %9
OpKill
OpFunctionEnd
%9 = OpFunction %_struct_6 None %7
%10 = OpLabel
%11 = OpFunctionCall %_struct_6 %12
OpUnreachable
OpFunctionEnd
%12 = OpFunction %_struct_6 None %7
%13 = OpLabel
OpUnreachable
OpFunctionEnd
)";
std::unique_ptr<IRContext> ctx =
spvtools::BuildModule(SPV_ENV_UNIVERSAL_1_1, nullptr, text,
SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS);
auto* func = spvtest::GetFunction(ctx->module(), 9);
EXPECT_FALSE(func->IsRecursive());
func = spvtest::GetFunction(ctx->module(), 12);
EXPECT_FALSE(func->IsRecursive());
}
TEST(FunctionTest, IsDirectlyRecursive) {
const std::string text = R"(
OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %1 "main"
OpExecutionMode %1 OriginUpperLeft
OpDecorate %2 DescriptorSet 439418829
%void = OpTypeVoid
%4 = OpTypeFunction %void
%float = OpTypeFloat 32
%_struct_6 = OpTypeStruct %float %float
%7 = OpTypeFunction %_struct_6
%1 = OpFunction %void Pure|Const %4
%8 = OpLabel
%2 = OpFunctionCall %_struct_6 %9
OpKill
OpFunctionEnd
%9 = OpFunction %_struct_6 None %7
%10 = OpLabel
%11 = OpFunctionCall %_struct_6 %9
OpUnreachable
OpFunctionEnd
)";
std::unique_ptr<IRContext> ctx =
spvtools::BuildModule(SPV_ENV_UNIVERSAL_1_1, nullptr, text,
SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS);
auto* func = spvtest::GetFunction(ctx->module(), 9);
EXPECT_TRUE(func->IsRecursive());
}
TEST(FunctionTest, IsIndirectlyRecursive) {
const std::string text = R"(
OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %1 "main"
OpExecutionMode %1 OriginUpperLeft
OpDecorate %2 DescriptorSet 439418829
%void = OpTypeVoid
%4 = OpTypeFunction %void
%float = OpTypeFloat 32
%_struct_6 = OpTypeStruct %float %float
%7 = OpTypeFunction %_struct_6
%1 = OpFunction %void Pure|Const %4
%8 = OpLabel
%2 = OpFunctionCall %_struct_6 %9
OpKill
OpFunctionEnd
%9 = OpFunction %_struct_6 None %7
%10 = OpLabel
%11 = OpFunctionCall %_struct_6 %12
OpUnreachable
OpFunctionEnd
%12 = OpFunction %_struct_6 None %7
%13 = OpLabel
%14 = OpFunctionCall %_struct_6 %9
OpUnreachable
OpFunctionEnd
)";
std::unique_ptr<IRContext> ctx =
spvtools::BuildModule(SPV_ENV_UNIVERSAL_1_1, nullptr, text,
SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS);
auto* func = spvtest::GetFunction(ctx->module(), 9);
EXPECT_TRUE(func->IsRecursive());
func = spvtest::GetFunction(ctx->module(), 12);
EXPECT_TRUE(func->IsRecursive());
}
TEST(FunctionTest, IsNotRecuriseCallingRecursive) {
const std::string text = R"(
OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %1 "main"
OpExecutionMode %1 OriginUpperLeft
OpDecorate %2 DescriptorSet 439418829
%void = OpTypeVoid
%4 = OpTypeFunction %void
%float = OpTypeFloat 32
%_struct_6 = OpTypeStruct %float %float
%7 = OpTypeFunction %_struct_6
%1 = OpFunction %void Pure|Const %4
%8 = OpLabel
%2 = OpFunctionCall %_struct_6 %9
OpKill
OpFunctionEnd
%9 = OpFunction %_struct_6 None %7
%10 = OpLabel
%11 = OpFunctionCall %_struct_6 %9
OpUnreachable
OpFunctionEnd
)";
std::unique_ptr<IRContext> ctx =
spvtools::BuildModule(SPV_ENV_UNIVERSAL_1_1, nullptr, text,
SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS);
auto* func = spvtest::GetFunction(ctx->module(), 1);
EXPECT_FALSE(func->IsRecursive());
}
TEST(FunctionTest, NonSemanticInfoSkipIteration) {
const std::string text = R"(
OpCapability Shader
OpCapability Linkage
OpExtension "SPV_KHR_non_semantic_info"
%1 = OpExtInstImport "NonSemantic.Test"
OpMemoryModel Logical GLSL450
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%4 = OpFunction %2 None %3
%5 = OpLabel
%6 = OpExtInst %2 %1 1
OpReturn
OpFunctionEnd
%7 = OpExtInst %2 %1 2
%8 = OpExtInst %2 %1 3
)";
std::unique_ptr<IRContext> ctx =
spvtools::BuildModule(SPV_ENV_UNIVERSAL_1_1, nullptr, text,
SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS);
auto* func = spvtest::GetFunction(ctx->module(), 4);
ASSERT_TRUE(func != nullptr);
std::unordered_set<uint32_t> non_semantic_ids;
func->ForEachInst(
[&non_semantic_ids](const Instruction* inst) {
if (inst->opcode() == SpvOpExtInst) {
non_semantic_ids.insert(inst->result_id());
}
},
true, false);
EXPECT_EQ(1, non_semantic_ids.count(6));
EXPECT_EQ(0, non_semantic_ids.count(7));
EXPECT_EQ(0, non_semantic_ids.count(8));
}
TEST(FunctionTest, NonSemanticInfoIncludeIteration) {
const std::string text = R"(
OpCapability Shader
OpCapability Linkage
OpExtension "SPV_KHR_non_semantic_info"
%1 = OpExtInstImport "NonSemantic.Test"
OpMemoryModel Logical GLSL450
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%4 = OpFunction %2 None %3
%5 = OpLabel
%6 = OpExtInst %2 %1 1
OpReturn
OpFunctionEnd
%7 = OpExtInst %2 %1 2
%8 = OpExtInst %2 %1 3
)";
std::unique_ptr<IRContext> ctx =
spvtools::BuildModule(SPV_ENV_UNIVERSAL_1_1, nullptr, text,
SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS);
auto* func = spvtest::GetFunction(ctx->module(), 4);
ASSERT_TRUE(func != nullptr);
std::unordered_set<uint32_t> non_semantic_ids;
func->ForEachInst(
[&non_semantic_ids](const Instruction* inst) {
if (inst->opcode() == SpvOpExtInst) {
non_semantic_ids.insert(inst->result_id());
}
},
true, true);
EXPECT_EQ(1, non_semantic_ids.count(6));
EXPECT_EQ(1, non_semantic_ids.count(7));
EXPECT_EQ(1, non_semantic_ids.count(8));
}
} // namespace
} // namespace opt
} // namespace spvtools