SPIRV-Tools/test/opt/code_sink_test.cpp

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// Copyright (c) 2019 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 <string>
#include "gmock/gmock.h"
#include "test/opt/assembly_builder.h"
#include "test/opt/pass_fixture.h"
#include "test/opt/pass_utils.h"
namespace spvtools {
namespace opt {
namespace {
using CodeSinkTest = PassTest<::testing::Test>;
TEST_F(CodeSinkTest, MoveToNextBlock) {
const std::string text = R"(
;CHECK: OpFunction
;CHECK: OpLabel
;CHECK: OpLabel
;CHECK: [[ac:%\w+]] = OpAccessChain
;CHECK: [[ld:%\w+]] = OpLoad %uint [[ac]]
;CHECK: OpCopyObject %uint [[ld]]
OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %1 "main"
%void = OpTypeVoid
%uint = OpTypeInt 32 0
%uint_0 = OpConstant %uint 0
%uint_4 = OpConstant %uint 4
%_arr_uint_uint_4 = OpTypeArray %uint %uint_4
%_ptr_Uniform_uint = OpTypePointer Uniform %uint
%_ptr_Uniform__arr_uint_uint_4 = OpTypePointer Uniform %_arr_uint_uint_4
%9 = OpVariable %_ptr_Uniform__arr_uint_uint_4 Uniform
%10 = OpTypeFunction %void
%1 = OpFunction %void None %10
%11 = OpLabel
%12 = OpAccessChain %_ptr_Uniform_uint %9 %uint_0
%13 = OpLoad %uint %12
OpBranch %14
%14 = OpLabel
%15 = OpCopyObject %uint %13
OpReturn
OpFunctionEnd
)";
SinglePassRunAndMatch<CodeSinkingPass>(text, true);
}
TEST_F(CodeSinkTest, MovePastSelection) {
const std::string text = R"(
;CHECK: OpFunction
;CHECK: OpLabel
;CHECK: OpSelectionMerge [[merge_bb:%\w+]]
;CHECK: [[merge_bb]] = OpLabel
;CHECK: [[ac:%\w+]] = OpAccessChain
;CHECK: [[ld:%\w+]] = OpLoad %uint [[ac]]
;CHECK: OpCopyObject %uint [[ld]]
OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %1 "main"
%void = OpTypeVoid
%bool = OpTypeBool
%true = OpConstantTrue %bool
%uint = OpTypeInt 32 0
%uint_0 = OpConstant %uint 0
%uint_4 = OpConstant %uint 4
%_arr_uint_uint_4 = OpTypeArray %uint %uint_4
%_ptr_Uniform_uint = OpTypePointer Uniform %uint
%_ptr_Uniform__arr_uint_uint_4 = OpTypePointer Uniform %_arr_uint_uint_4
%11 = OpVariable %_ptr_Uniform__arr_uint_uint_4 Uniform
%12 = OpTypeFunction %void
%1 = OpFunction %void None %12
%13 = OpLabel
%14 = OpAccessChain %_ptr_Uniform_uint %11 %uint_0
%15 = OpLoad %uint %14
OpSelectionMerge %16 None
OpBranchConditional %true %17 %16
%17 = OpLabel
OpBranch %16
%16 = OpLabel
%18 = OpCopyObject %uint %15
OpReturn
OpFunctionEnd
)";
SinglePassRunAndMatch<CodeSinkingPass>(text, true);
}
TEST_F(CodeSinkTest, MoveIntoSelection) {
const std::string text = R"(
;CHECK: OpFunction
;CHECK: OpLabel
;CHECK: OpSelectionMerge [[merge_bb:%\w+]]
;CHECK-NEXT: OpBranchConditional %true [[bb:%\w+]] [[merge_bb]]
;CHECK: [[bb]] = OpLabel
;CHECK-NEXT: [[ac:%\w+]] = OpAccessChain
;CHECK-NEXT: [[ld:%\w+]] = OpLoad %uint [[ac]]
;CHECK-NEXT: OpCopyObject %uint [[ld]]
OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %1 "main"
%void = OpTypeVoid
%bool = OpTypeBool
%true = OpConstantTrue %bool
%uint = OpTypeInt 32 0
%uint_0 = OpConstant %uint 0
%uint_4 = OpConstant %uint 4
%_arr_uint_uint_4 = OpTypeArray %uint %uint_4
%_ptr_Uniform_uint = OpTypePointer Uniform %uint
%_ptr_Uniform__arr_uint_uint_4 = OpTypePointer Uniform %_arr_uint_uint_4
%11 = OpVariable %_ptr_Uniform__arr_uint_uint_4 Uniform
%12 = OpTypeFunction %void
%1 = OpFunction %void None %12
%13 = OpLabel
%14 = OpAccessChain %_ptr_Uniform_uint %11 %uint_0
%15 = OpLoad %uint %14
OpSelectionMerge %16 None
OpBranchConditional %true %17 %16
%17 = OpLabel
%18 = OpCopyObject %uint %15
OpBranch %16
%16 = OpLabel
OpReturn
OpFunctionEnd
)";
SinglePassRunAndMatch<CodeSinkingPass>(text, true);
}
TEST_F(CodeSinkTest, LeaveBeforeSelection) {
const std::string text = R"(
OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %1 "main"
%void = OpTypeVoid
%bool = OpTypeBool
%true = OpConstantTrue %bool
%uint = OpTypeInt 32 0
%uint_0 = OpConstant %uint 0
%uint_4 = OpConstant %uint 4
%_arr_uint_uint_4 = OpTypeArray %uint %uint_4
%_ptr_Uniform_uint = OpTypePointer Uniform %uint
%_ptr_Uniform__arr_uint_uint_4 = OpTypePointer Uniform %_arr_uint_uint_4
%11 = OpVariable %_ptr_Uniform__arr_uint_uint_4 Uniform
%12 = OpTypeFunction %void
%1 = OpFunction %void None %12
%13 = OpLabel
%14 = OpAccessChain %_ptr_Uniform_uint %11 %uint_0
%15 = OpLoad %uint %14
OpSelectionMerge %16 None
OpBranchConditional %true %17 %20
%20 = OpLabel
OpBranch %16
%17 = OpLabel
%18 = OpCopyObject %uint %15
OpBranch %16
%16 = OpLabel
%19 = OpCopyObject %uint %15
OpReturn
OpFunctionEnd
)";
auto result = SinglePassRunAndDisassemble<CodeSinkingPass>(
text, /* skip_nop = */ true, /* do_validation = */ true);
EXPECT_EQ(Pass::Status::SuccessWithoutChange, std::get<1>(result));
}
TEST_F(CodeSinkTest, LeaveAloneUseInSameBlock) {
const std::string text = R"(
OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %1 "main"
%void = OpTypeVoid
%bool = OpTypeBool
%true = OpConstantTrue %bool
%uint = OpTypeInt 32 0
%uint_0 = OpConstant %uint 0
%uint_4 = OpConstant %uint 4
%_arr_uint_uint_4 = OpTypeArray %uint %uint_4
%_ptr_Uniform_uint = OpTypePointer Uniform %uint
%_ptr_Uniform__arr_uint_uint_4 = OpTypePointer Uniform %_arr_uint_uint_4
%11 = OpVariable %_ptr_Uniform__arr_uint_uint_4 Uniform
%12 = OpTypeFunction %void
%1 = OpFunction %void None %12
%13 = OpLabel
%14 = OpAccessChain %_ptr_Uniform_uint %11 %uint_0
%15 = OpLoad %uint %14
%cond = OpIEqual %bool %15 %uint_0
OpSelectionMerge %16 None
OpBranchConditional %cond %17 %16
%17 = OpLabel
OpBranch %16
%16 = OpLabel
%19 = OpCopyObject %uint %15
OpReturn
OpFunctionEnd
)";
auto result = SinglePassRunAndDisassemble<CodeSinkingPass>(
text, /* skip_nop = */ true, /* do_validation = */ true);
EXPECT_EQ(Pass::Status::SuccessWithoutChange, std::get<1>(result));
}
TEST_F(CodeSinkTest, DontMoveIntoLoop) {
const std::string text = R"(
OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %1 "main"
%void = OpTypeVoid
%bool = OpTypeBool
%true = OpConstantTrue %bool
%uint = OpTypeInt 32 0
%uint_0 = OpConstant %uint 0
%uint_4 = OpConstant %uint 4
%_arr_uint_uint_4 = OpTypeArray %uint %uint_4
%_ptr_Uniform_uint = OpTypePointer Uniform %uint
%_ptr_Uniform__arr_uint_uint_4 = OpTypePointer Uniform %_arr_uint_uint_4
%11 = OpVariable %_ptr_Uniform__arr_uint_uint_4 Uniform
%12 = OpTypeFunction %void
%1 = OpFunction %void None %12
%13 = OpLabel
%14 = OpAccessChain %_ptr_Uniform_uint %11 %uint_0
%15 = OpLoad %uint %14
OpBranch %17
%17 = OpLabel
OpLoopMerge %merge %cont None
OpBranch %cont
%cont = OpLabel
%cond = OpIEqual %bool %15 %uint_0
OpBranchConditional %cond %merge %17
%merge = OpLabel
OpReturn
OpFunctionEnd
)";
auto result = SinglePassRunAndDisassemble<CodeSinkingPass>(
text, /* skip_nop = */ true, /* do_validation = */ true);
EXPECT_EQ(Pass::Status::SuccessWithoutChange, std::get<1>(result));
}
TEST_F(CodeSinkTest, DontMoveIntoLoop2) {
const std::string text = R"(
OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %1 "main"
%void = OpTypeVoid
%bool = OpTypeBool
%true = OpConstantTrue %bool
%uint = OpTypeInt 32 0
%uint_0 = OpConstant %uint 0
%uint_4 = OpConstant %uint 4
%_arr_uint_uint_4 = OpTypeArray %uint %uint_4
%_ptr_Uniform_uint = OpTypePointer Uniform %uint
%_ptr_Uniform__arr_uint_uint_4 = OpTypePointer Uniform %_arr_uint_uint_4
%11 = OpVariable %_ptr_Uniform__arr_uint_uint_4 Uniform
%12 = OpTypeFunction %void
%1 = OpFunction %void None %12
%13 = OpLabel
%14 = OpAccessChain %_ptr_Uniform_uint %11 %uint_0
%15 = OpLoad %uint %14
OpSelectionMerge %16 None
OpBranchConditional %true %17 %16
%17 = OpLabel
OpLoopMerge %merge %cont None
OpBranch %cont
%cont = OpLabel
%cond = OpIEqual %bool %15 %uint_0
OpBranchConditional %cond %merge %17
%merge = OpLabel
OpBranch %16
%16 = OpLabel
OpReturn
OpFunctionEnd
)";
auto result = SinglePassRunAndDisassemble<CodeSinkingPass>(
text, /* skip_nop = */ true, /* do_validation = */ true);
EXPECT_EQ(Pass::Status::SuccessWithoutChange, std::get<1>(result));
}
TEST_F(CodeSinkTest, DontMoveSelectionUsedInBothSides) {
const std::string text = R"(
OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %1 "main"
%void = OpTypeVoid
%bool = OpTypeBool
%true = OpConstantTrue %bool
%uint = OpTypeInt 32 0
%uint_0 = OpConstant %uint 0
%uint_4 = OpConstant %uint 4
%_arr_uint_uint_4 = OpTypeArray %uint %uint_4
%_ptr_Uniform_uint = OpTypePointer Uniform %uint
%_ptr_Uniform__arr_uint_uint_4 = OpTypePointer Uniform %_arr_uint_uint_4
%11 = OpVariable %_ptr_Uniform__arr_uint_uint_4 Uniform
%12 = OpTypeFunction %void
%1 = OpFunction %void None %12
%13 = OpLabel
%14 = OpAccessChain %_ptr_Uniform_uint %11 %uint_0
%15 = OpLoad %uint %14
OpSelectionMerge %16 None
OpBranchConditional %true %17 %20
%20 = OpLabel
%19 = OpCopyObject %uint %15
OpBranch %16
%17 = OpLabel
%18 = OpCopyObject %uint %15
OpBranch %16
%16 = OpLabel
OpReturn
OpFunctionEnd
)";
auto result = SinglePassRunAndDisassemble<CodeSinkingPass>(
text, /* skip_nop = */ true, /* do_validation = */ true);
EXPECT_EQ(Pass::Status::SuccessWithoutChange, std::get<1>(result));
}
TEST_F(CodeSinkTest, DontMoveBecauseOfStore) {
const std::string text = R"(
OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %1 "main"
%void = OpTypeVoid
%bool = OpTypeBool
%true = OpConstantTrue %bool
%uint = OpTypeInt 32 0
%uint_0 = OpConstant %uint 0
%uint_4 = OpConstant %uint 4
%_arr_uint_uint_4 = OpTypeArray %uint %uint_4
%_ptr_Uniform_uint = OpTypePointer Uniform %uint
%_ptr_Uniform__arr_uint_uint_4 = OpTypePointer Uniform %_arr_uint_uint_4
%11 = OpVariable %_ptr_Uniform__arr_uint_uint_4 Uniform
%12 = OpTypeFunction %void
%1 = OpFunction %void None %12
%13 = OpLabel
%14 = OpAccessChain %_ptr_Uniform_uint %11 %uint_0
%15 = OpLoad %uint %14
OpStore %14 %15
OpSelectionMerge %16 None
OpBranchConditional %true %17 %20
%20 = OpLabel
OpBranch %16
%17 = OpLabel
%18 = OpCopyObject %uint %15
OpBranch %16
%16 = OpLabel
OpReturn
OpFunctionEnd
)";
auto result = SinglePassRunAndDisassemble<CodeSinkingPass>(
text, /* skip_nop = */ true, /* do_validation = */ true);
EXPECT_EQ(Pass::Status::SuccessWithoutChange, std::get<1>(result));
}
TEST_F(CodeSinkTest, MoveReadOnlyLoadWithSync) {
const std::string text = R"(
OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %1 "main"
%void = OpTypeVoid
%bool = OpTypeBool
%true = OpConstantTrue %bool
%uint = OpTypeInt 32 0
%uint_0 = OpConstant %uint 0
%uint_4 = OpConstant %uint 4
%mem_semantics = OpConstant %uint 0x42 ; Uniform memeory arquire
%_arr_uint_uint_4 = OpTypeArray %uint %uint_4
%_ptr_Uniform_uint = OpTypePointer Uniform %uint
%_ptr_Uniform__arr_uint_uint_4 = OpTypePointer Uniform %_arr_uint_uint_4
%11 = OpVariable %_ptr_Uniform__arr_uint_uint_4 Uniform
%12 = OpTypeFunction %void
%1 = OpFunction %void None %12
%13 = OpLabel
%14 = OpAccessChain %_ptr_Uniform_uint %11 %uint_0
%15 = OpLoad %uint %14
OpMemoryBarrier %uint_4 %mem_semantics
OpSelectionMerge %16 None
OpBranchConditional %true %17 %20
%20 = OpLabel
OpBranch %16
%17 = OpLabel
%18 = OpCopyObject %uint %15
OpBranch %16
%16 = OpLabel
OpReturn
OpFunctionEnd
)";
auto result = SinglePassRunAndDisassemble<CodeSinkingPass>(
text, /* skip_nop = */ true, /* do_validation = */ true);
EXPECT_EQ(Pass::Status::SuccessWithChange, std::get<1>(result));
}
TEST_F(CodeSinkTest, DontMoveBecauseOfSync) {
const std::string text = R"(
OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %1 "main"
OpDecorate %_arr_uint_uint_4 BufferBlock
OpMemberDecorate %_arr_uint_uint_4 0 Offset 0
%void = OpTypeVoid
%bool = OpTypeBool
%true = OpConstantTrue %bool
%uint = OpTypeInt 32 0
%uint_0 = OpConstant %uint 0
%uint_4 = OpConstant %uint 4
%mem_semantics = OpConstant %uint 0x42 ; Uniform memeory arquire
%_arr_uint_uint_4 = OpTypeStruct %uint
%_ptr_Uniform_uint = OpTypePointer Uniform %uint
%_ptr_Uniform__arr_uint_uint_4 = OpTypePointer Uniform %_arr_uint_uint_4
%11 = OpVariable %_ptr_Uniform__arr_uint_uint_4 Uniform
%12 = OpTypeFunction %void
%1 = OpFunction %void None %12
%13 = OpLabel
%14 = OpAccessChain %_ptr_Uniform_uint %11 %uint_0
%15 = OpLoad %uint %14
OpMemoryBarrier %uint_4 %mem_semantics
OpSelectionMerge %16 None
OpBranchConditional %true %17 %20
%20 = OpLabel
OpBranch %16
%17 = OpLabel
%18 = OpCopyObject %uint %15
OpBranch %16
%16 = OpLabel
OpReturn
OpFunctionEnd
)";
auto result = SinglePassRunAndDisassemble<CodeSinkingPass>(
text, /* skip_nop = */ true, /* do_validation = */ true);
EXPECT_EQ(Pass::Status::SuccessWithoutChange, std::get<1>(result));
}
TEST_F(CodeSinkTest, DontMoveBecauseOfAtomicWithSync) {
const std::string text = R"(
OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %1 "main"
OpDecorate %_arr_uint_uint_4 BufferBlock
OpMemberDecorate %_arr_uint_uint_4 0 Offset 0
%void = OpTypeVoid
%bool = OpTypeBool
%true = OpConstantTrue %bool
%uint = OpTypeInt 32 0
%uint_0 = OpConstant %uint 0
%uint_4 = OpConstant %uint 4
%mem_semantics = OpConstant %uint 0x42 ; Uniform memeory arquire
%_arr_uint_uint_4 = OpTypeStruct %uint
%_ptr_Uniform_uint = OpTypePointer Uniform %uint
%_ptr_Uniform__arr_uint_uint_4 = OpTypePointer Uniform %_arr_uint_uint_4
%11 = OpVariable %_ptr_Uniform__arr_uint_uint_4 Uniform
%12 = OpTypeFunction %void
%1 = OpFunction %void None %12
%13 = OpLabel
%14 = OpAccessChain %_ptr_Uniform_uint %11 %uint_0
%15 = OpLoad %uint %14
%al = OpAtomicLoad %uint %14 %uint_4 %mem_semantics
OpSelectionMerge %16 None
OpBranchConditional %true %17 %20
%20 = OpLabel
OpBranch %16
%17 = OpLabel
%18 = OpCopyObject %uint %15
OpBranch %16
%16 = OpLabel
OpReturn
OpFunctionEnd
)";
auto result = SinglePassRunAndDisassemble<CodeSinkingPass>(
text, /* skip_nop = */ true, /* do_validation = */ true);
EXPECT_EQ(Pass::Status::SuccessWithoutChange, std::get<1>(result));
}
TEST_F(CodeSinkTest, MoveWithAtomicWithoutSync) {
const std::string text = R"(
OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %1 "main"
OpDecorate %_arr_uint_uint_4 BufferBlock
OpMemberDecorate %_arr_uint_uint_4 0 Offset 0
%void = OpTypeVoid
%bool = OpTypeBool
%true = OpConstantTrue %bool
%uint = OpTypeInt 32 0
%uint_0 = OpConstant %uint 0
%uint_4 = OpConstant %uint 4
%_arr_uint_uint_4 = OpTypeStruct %uint
%_ptr_Uniform_uint = OpTypePointer Uniform %uint
%_ptr_Uniform__arr_uint_uint_4 = OpTypePointer Uniform %_arr_uint_uint_4
%11 = OpVariable %_ptr_Uniform__arr_uint_uint_4 Uniform
%12 = OpTypeFunction %void
%1 = OpFunction %void None %12
%13 = OpLabel
%14 = OpAccessChain %_ptr_Uniform_uint %11 %uint_0
%15 = OpLoad %uint %14
%al = OpAtomicLoad %uint %14 %uint_4 %uint_0
OpSelectionMerge %16 None
OpBranchConditional %true %17 %20
%20 = OpLabel
OpBranch %16
%17 = OpLabel
%18 = OpCopyObject %uint %15
OpBranch %16
%16 = OpLabel
OpReturn
OpFunctionEnd
)";
auto result = SinglePassRunAndDisassemble<CodeSinkingPass>(
text, /* skip_nop = */ true, /* do_validation = */ true);
EXPECT_EQ(Pass::Status::SuccessWithChange, std::get<1>(result));
}
TEST_F(CodeSinkTest, DecorationOnLoad) {
const std::string text = R"(
OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %1 "main" %2
OpDecorate %3 RelaxedPrecision
%void = OpTypeVoid
%5 = OpTypeFunction %void
%float = OpTypeFloat 32
%_ptr_Input_float = OpTypePointer Input %float
%2 = OpVariable %_ptr_Input_float Input
%1 = OpFunction %void None %5
%8 = OpLabel
%3 = OpLoad %float %2
OpReturn
OpFunctionEnd
)";
// We just want to make sure the code does not crash.
auto result = SinglePassRunAndDisassemble<CodeSinkingPass>(
text, /* skip_nop = */ true, /* do_validation = */ true);
EXPECT_EQ(Pass::Status::SuccessWithoutChange, std::get<1>(result));
}
} // namespace
} // namespace opt
} // namespace spvtools