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transformation_replace_id_with_synonym_test.cpp
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transformation_replace_id_with_synonym_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 "source/fuzz/transformation_replace_id_with_synonym.h"
#include "source/fuzz/data_descriptor.h"
#include "source/fuzz/id_use_descriptor.h"
#include "source/fuzz/instruction_descriptor.h"
#include "test/fuzz/fuzz_test_util.h"
namespace spvtools {
namespace fuzz {
namespace {
// The following shader was obtained from this GLSL, which was then optimized
// with spirv-opt -O and manually edited to include some uses of OpCopyObject
// (to introduce id synonyms).
//
// #version 310 es
//
// precision highp int;
// precision highp float;
//
// layout(set = 0, binding = 0) uniform buf {
// int a;
// int b;
// int c;
// };
//
// layout(location = 0) out vec4 color;
//
// void main() {
// int x = a;
// float f = 0.0;
// while (x < b) {
// switch(x % 4) {
// case 0:
// color[0] = f;
// break;
// case 1:
// color[1] = f;
// break;
// case 2:
// color[2] = f;
// break;
// case 3:
// color[3] = f;
// break;
// default:
// break;
// }
// if (x > c) {
// x++;
// } else {
// x += 2;
// }
// }
// color[0] += color[1] + float(x);
// }
const std::string kComplexShader = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %4 "main" %42
OpExecutionMode %4 OriginUpperLeft
OpSource ESSL 310
OpName %4 "main"
OpName %9 "buf"
OpMemberName %9 0 "a"
OpMemberName %9 1 "b"
OpMemberName %9 2 "c"
OpName %11 ""
OpName %42 "color"
OpMemberDecorate %9 0 Offset 0
OpMemberDecorate %9 1 Offset 4
OpMemberDecorate %9 2 Offset 8
OpDecorate %9 Block
OpDecorate %11 DescriptorSet 0
OpDecorate %11 Binding 0
OpDecorate %42 Location 0
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%6 = OpTypeInt 32 1
%9 = OpTypeStruct %6 %6 %6
%10 = OpTypePointer Uniform %9
%11 = OpVariable %10 Uniform
%12 = OpConstant %6 0
%13 = OpTypePointer Uniform %6
%16 = OpTypeFloat 32
%19 = OpConstant %16 0
%26 = OpConstant %6 1
%29 = OpTypeBool
%32 = OpConstant %6 4
%40 = OpTypeVector %16 4
%41 = OpTypePointer Output %40
%42 = OpVariable %41 Output
%44 = OpTypeInt 32 0
%45 = OpConstant %44 0
%46 = OpTypePointer Output %16
%50 = OpConstant %44 1
%54 = OpConstant %44 2
%58 = OpConstant %44 3
%64 = OpConstant %6 2
%4 = OpFunction %2 None %3
%5 = OpLabel
%209 = OpCopyObject %6 %12
%14 = OpAccessChain %13 %11 %12
%15 = OpLoad %6 %14
%200 = OpCopyObject %6 %15
OpBranch %20
%20 = OpLabel
%84 = OpPhi %6 %15 %5 %86 %69
%27 = OpAccessChain %13 %11 %26
%28 = OpLoad %6 %27
%207 = OpCopyObject %6 %84
%201 = OpCopyObject %6 %15
%30 = OpSLessThan %29 %84 %28
OpLoopMerge %22 %69 None
OpBranchConditional %30 %21 %22
%21 = OpLabel
%33 = OpSMod %6 %84 %32
%208 = OpCopyObject %6 %33
OpSelectionMerge %39 None
OpSwitch %33 %38 0 %34 1 %35 2 %36 3 %37
%38 = OpLabel
%202 = OpCopyObject %6 %15
OpBranch %39
%34 = OpLabel
%210 = OpCopyObject %16 %19
%47 = OpAccessChain %46 %42 %45
OpStore %47 %19
OpBranch %39
%35 = OpLabel
%51 = OpAccessChain %46 %42 %50
OpStore %51 %19
OpBranch %39
%36 = OpLabel
%204 = OpCopyObject %44 %54
%55 = OpAccessChain %46 %42 %54
%203 = OpCopyObject %46 %55
OpStore %55 %19
OpBranch %39
%37 = OpLabel
%59 = OpAccessChain %46 %42 %58
OpStore %59 %19
OpBranch %39
%39 = OpLabel
%300 = OpIAdd %6 %15 %15
%65 = OpAccessChain %13 %11 %64
%66 = OpLoad %6 %65
%67 = OpSGreaterThan %29 %84 %66
OpSelectionMerge %1000 None
OpBranchConditional %67 %68 %72
%68 = OpLabel
%71 = OpIAdd %6 %84 %26
OpBranch %1000
%72 = OpLabel
%74 = OpIAdd %6 %84 %64
%205 = OpCopyObject %6 %74
OpBranch %1000
%1000 = OpLabel
%86 = OpPhi %6 %71 %68 %74 %72
%301 = OpPhi %6 %71 %68 %15 %72
OpBranch %69
%69 = OpLabel
OpBranch %20
%22 = OpLabel
%75 = OpAccessChain %46 %42 %50
%76 = OpLoad %16 %75
%78 = OpConvertSToF %16 %84
%80 = OpAccessChain %46 %42 %45
%206 = OpCopyObject %16 %78
%81 = OpLoad %16 %80
%79 = OpFAdd %16 %76 %78
%82 = OpFAdd %16 %81 %79
OpStore %80 %82
OpReturn
OpFunctionEnd
)";
protobufs::Fact MakeSynonymFact(uint32_t first, uint32_t second) {
protobufs::FactDataSynonym data_synonym_fact;
*data_synonym_fact.mutable_data1() = MakeDataDescriptor(first, {});
*data_synonym_fact.mutable_data2() = MakeDataDescriptor(second, {});
protobufs::Fact result;
*result.mutable_data_synonym_fact() = data_synonym_fact;
return result;
}
// Equips the fact manager with synonym facts for the above shader.
void SetUpIdSynonyms(FactManager* fact_manager, opt::IRContext* context) {
fact_manager->AddFact(MakeSynonymFact(15, 200), context);
fact_manager->AddFact(MakeSynonymFact(15, 201), context);
fact_manager->AddFact(MakeSynonymFact(15, 202), context);
fact_manager->AddFact(MakeSynonymFact(55, 203), context);
fact_manager->AddFact(MakeSynonymFact(54, 204), context);
fact_manager->AddFact(MakeSynonymFact(74, 205), context);
fact_manager->AddFact(MakeSynonymFact(78, 206), context);
fact_manager->AddFact(MakeSynonymFact(84, 207), context);
fact_manager->AddFact(MakeSynonymFact(33, 208), context);
fact_manager->AddFact(MakeSynonymFact(12, 209), context);
fact_manager->AddFact(MakeSynonymFact(19, 210), context);
}
TEST(TransformationReplaceIdWithSynonymTest, IllegalTransformations) {
const auto env = SPV_ENV_UNIVERSAL_1_3;
const auto consumer = nullptr;
const auto context =
BuildModule(env, consumer, kComplexShader, kFuzzAssembleOption);
ASSERT_TRUE(IsValid(env, context.get()));
FactManager fact_manager;
spvtools::ValidatorOptions validator_options;
TransformationContext transformation_context(&fact_manager,
validator_options);
SetUpIdSynonyms(transformation_context.GetFactManager(), context.get());
// %202 cannot replace %15 as in-operand 0 of %300, since %202 does not
// dominate %300.
auto synonym_does_not_dominate_use = TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(15, MakeInstructionDescriptor(300, SpvOpIAdd, 0), 0),
202);
ASSERT_FALSE(synonym_does_not_dominate_use.IsApplicable(
context.get(), transformation_context));
// %202 cannot replace %15 as in-operand 2 of %301, since this is the OpPhi's
// incoming value for block %72, and %202 does not dominate %72.
auto synonym_does_not_dominate_use_op_phi =
TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(15, MakeInstructionDescriptor(301, SpvOpPhi, 0),
2),
202);
ASSERT_FALSE(synonym_does_not_dominate_use_op_phi.IsApplicable(
context.get(), transformation_context));
// %200 is not a synonym for %84
auto id_in_use_is_not_synonymous = TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(
84, MakeInstructionDescriptor(67, SpvOpSGreaterThan, 0), 0),
200);
ASSERT_FALSE(id_in_use_is_not_synonymous.IsApplicable(
context.get(), transformation_context));
// %86 is not a synonym for anything (and in particular not for %74)
auto id_has_no_synonyms = TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(86, MakeInstructionDescriptor(84, SpvOpPhi, 0), 2),
74);
ASSERT_FALSE(
id_has_no_synonyms.IsApplicable(context.get(), transformation_context));
// This would lead to %207 = 'OpCopyObject %type %207' if it were allowed
auto synonym_use_is_in_synonym_definition =
TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(
84, MakeInstructionDescriptor(207, SpvOpCopyObject, 0), 0),
207);
ASSERT_FALSE(synonym_use_is_in_synonym_definition.IsApplicable(
context.get(), transformation_context));
// The id use descriptor does not lead to a use (%84 is not used in the
// definition of %207)
auto bad_id_use_descriptor = TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(
84, MakeInstructionDescriptor(200, SpvOpCopyObject, 0), 0),
207);
ASSERT_FALSE(bad_id_use_descriptor.IsApplicable(context.get(),
transformation_context));
// This replacement would lead to an access chain into a struct using a
// non-constant index.
auto bad_access_chain = TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(
12, MakeInstructionDescriptor(14, SpvOpAccessChain, 0), 1),
209);
ASSERT_FALSE(
bad_access_chain.IsApplicable(context.get(), transformation_context));
}
TEST(TransformationReplaceIdWithSynonymTest, LegalTransformations) {
const auto env = SPV_ENV_UNIVERSAL_1_3;
const auto consumer = nullptr;
const auto context =
BuildModule(env, consumer, kComplexShader, kFuzzAssembleOption);
ASSERT_TRUE(IsValid(env, context.get()));
FactManager fact_manager;
spvtools::ValidatorOptions validator_options;
TransformationContext transformation_context(&fact_manager,
validator_options);
SetUpIdSynonyms(transformation_context.GetFactManager(), context.get());
auto global_constant_synonym = TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(19, MakeInstructionDescriptor(47, SpvOpStore, 0), 1),
210);
ASSERT_TRUE(global_constant_synonym.IsApplicable(context.get(),
transformation_context));
global_constant_synonym.Apply(context.get(), &transformation_context);
ASSERT_TRUE(IsValid(env, context.get()));
auto replace_vector_access_chain_index = TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(
54, MakeInstructionDescriptor(55, SpvOpAccessChain, 0), 1),
204);
ASSERT_TRUE(replace_vector_access_chain_index.IsApplicable(
context.get(), transformation_context));
replace_vector_access_chain_index.Apply(context.get(),
&transformation_context);
ASSERT_TRUE(IsValid(env, context.get()));
// This is an interesting case because it replaces something that is being
// copied with something that is already a synonym.
auto regular_replacement = TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(
15, MakeInstructionDescriptor(202, SpvOpCopyObject, 0), 0),
201);
ASSERT_TRUE(
regular_replacement.IsApplicable(context.get(), transformation_context));
regular_replacement.Apply(context.get(), &transformation_context);
ASSERT_TRUE(IsValid(env, context.get()));
auto regular_replacement2 = TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(55, MakeInstructionDescriptor(203, SpvOpStore, 0), 0),
203);
ASSERT_TRUE(
regular_replacement2.IsApplicable(context.get(), transformation_context));
regular_replacement2.Apply(context.get(), &transformation_context);
ASSERT_TRUE(IsValid(env, context.get()));
auto good_op_phi = TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(74, MakeInstructionDescriptor(86, SpvOpPhi, 0), 2),
205);
ASSERT_TRUE(good_op_phi.IsApplicable(context.get(), transformation_context));
good_op_phi.Apply(context.get(), &transformation_context);
ASSERT_TRUE(IsValid(env, context.get()));
const std::string after_transformation = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %4 "main" %42
OpExecutionMode %4 OriginUpperLeft
OpSource ESSL 310
OpName %4 "main"
OpName %9 "buf"
OpMemberName %9 0 "a"
OpMemberName %9 1 "b"
OpMemberName %9 2 "c"
OpName %11 ""
OpName %42 "color"
OpMemberDecorate %9 0 Offset 0
OpMemberDecorate %9 1 Offset 4
OpMemberDecorate %9 2 Offset 8
OpDecorate %9 Block
OpDecorate %11 DescriptorSet 0
OpDecorate %11 Binding 0
OpDecorate %42 Location 0
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%6 = OpTypeInt 32 1
%9 = OpTypeStruct %6 %6 %6
%10 = OpTypePointer Uniform %9
%11 = OpVariable %10 Uniform
%12 = OpConstant %6 0
%13 = OpTypePointer Uniform %6
%16 = OpTypeFloat 32
%19 = OpConstant %16 0
%26 = OpConstant %6 1
%29 = OpTypeBool
%32 = OpConstant %6 4
%40 = OpTypeVector %16 4
%41 = OpTypePointer Output %40
%42 = OpVariable %41 Output
%44 = OpTypeInt 32 0
%45 = OpConstant %44 0
%46 = OpTypePointer Output %16
%50 = OpConstant %44 1
%54 = OpConstant %44 2
%58 = OpConstant %44 3
%64 = OpConstant %6 2
%4 = OpFunction %2 None %3
%5 = OpLabel
%209 = OpCopyObject %6 %12
%14 = OpAccessChain %13 %11 %12
%15 = OpLoad %6 %14
%200 = OpCopyObject %6 %15
OpBranch %20
%20 = OpLabel
%84 = OpPhi %6 %15 %5 %86 %69
%27 = OpAccessChain %13 %11 %26
%28 = OpLoad %6 %27
%207 = OpCopyObject %6 %84
%201 = OpCopyObject %6 %15
%30 = OpSLessThan %29 %84 %28
OpLoopMerge %22 %69 None
OpBranchConditional %30 %21 %22
%21 = OpLabel
%33 = OpSMod %6 %84 %32
%208 = OpCopyObject %6 %33
OpSelectionMerge %39 None
OpSwitch %33 %38 0 %34 1 %35 2 %36 3 %37
%38 = OpLabel
%202 = OpCopyObject %6 %201
OpBranch %39
%34 = OpLabel
%210 = OpCopyObject %16 %19
%47 = OpAccessChain %46 %42 %45
OpStore %47 %210
OpBranch %39
%35 = OpLabel
%51 = OpAccessChain %46 %42 %50
OpStore %51 %19
OpBranch %39
%36 = OpLabel
%204 = OpCopyObject %44 %54
%55 = OpAccessChain %46 %42 %204
%203 = OpCopyObject %46 %55
OpStore %203 %19
OpBranch %39
%37 = OpLabel
%59 = OpAccessChain %46 %42 %58
OpStore %59 %19
OpBranch %39
%39 = OpLabel
%300 = OpIAdd %6 %15 %15
%65 = OpAccessChain %13 %11 %64
%66 = OpLoad %6 %65
%67 = OpSGreaterThan %29 %84 %66
OpSelectionMerge %1000 None
OpBranchConditional %67 %68 %72
%68 = OpLabel
%71 = OpIAdd %6 %84 %26
OpBranch %1000
%72 = OpLabel
%74 = OpIAdd %6 %84 %64
%205 = OpCopyObject %6 %74
OpBranch %1000
%1000 = OpLabel
%86 = OpPhi %6 %71 %68 %205 %72
%301 = OpPhi %6 %71 %68 %15 %72
OpBranch %69
%69 = OpLabel
OpBranch %20
%22 = OpLabel
%75 = OpAccessChain %46 %42 %50
%76 = OpLoad %16 %75
%78 = OpConvertSToF %16 %84
%80 = OpAccessChain %46 %42 %45
%206 = OpCopyObject %16 %78
%81 = OpLoad %16 %80
%79 = OpFAdd %16 %76 %78
%82 = OpFAdd %16 %81 %79
OpStore %80 %82
OpReturn
OpFunctionEnd
)";
ASSERT_TRUE(IsEqual(env, after_transformation, context.get()));
}
TEST(TransformationReplaceIdWithSynonymTest, SynonymsOfVariables) {
// The following SPIR-V comes from this GLSL, with object copies added:
//
// #version 310 es
//
// precision highp int;
//
// int g;
//
// void main() {
// int l;
// l = g;
// g = l;
// }
const std::string shader = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %4 "main"
OpExecutionMode %4 OriginUpperLeft
OpSource ESSL 310
OpName %4 "main"
OpName %8 "l"
OpName %10 "g"
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%6 = OpTypeInt 32 1
%7 = OpTypePointer Function %6
%9 = OpTypePointer Private %6
%10 = OpVariable %9 Private
%4 = OpFunction %2 None %3
%5 = OpLabel
%8 = OpVariable %7 Function
%100 = OpCopyObject %9 %10
%101 = OpCopyObject %7 %8
%11 = OpLoad %6 %10
OpStore %8 %11
%12 = OpLoad %6 %8
OpStore %10 %12
OpReturn
OpFunctionEnd
)";
const auto env = SPV_ENV_UNIVERSAL_1_3;
const auto consumer = nullptr;
const auto context = BuildModule(env, consumer, shader, kFuzzAssembleOption);
ASSERT_TRUE(IsValid(env, context.get()));
FactManager fact_manager;
spvtools::ValidatorOptions validator_options;
TransformationContext transformation_context(&fact_manager,
validator_options);
transformation_context.GetFactManager()->AddFact(MakeSynonymFact(10, 100),
context.get());
transformation_context.GetFactManager()->AddFact(MakeSynonymFact(8, 101),
context.get());
// Replace %10 with %100 in:
// %11 = OpLoad %6 %10
auto replacement1 = TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(10, MakeInstructionDescriptor(11, SpvOpLoad, 0), 0),
100);
ASSERT_TRUE(replacement1.IsApplicable(context.get(), transformation_context));
replacement1.Apply(context.get(), &transformation_context);
ASSERT_TRUE(IsValid(env, context.get()));
// Replace %8 with %101 in:
// OpStore %8 %11
auto replacement2 = TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(8, MakeInstructionDescriptor(11, SpvOpStore, 0), 0),
101);
ASSERT_TRUE(replacement2.IsApplicable(context.get(), transformation_context));
replacement2.Apply(context.get(), &transformation_context);
ASSERT_TRUE(IsValid(env, context.get()));
// Replace %8 with %101 in:
// %12 = OpLoad %6 %8
auto replacement3 = TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(8, MakeInstructionDescriptor(12, SpvOpLoad, 0), 0),
101);
ASSERT_TRUE(replacement3.IsApplicable(context.get(), transformation_context));
replacement3.Apply(context.get(), &transformation_context);
ASSERT_TRUE(IsValid(env, context.get()));
// Replace %10 with %100 in:
// OpStore %10 %12
auto replacement4 = TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(10, MakeInstructionDescriptor(12, SpvOpStore, 0), 0),
100);
ASSERT_TRUE(replacement4.IsApplicable(context.get(), transformation_context));
replacement4.Apply(context.get(), &transformation_context);
ASSERT_TRUE(IsValid(env, context.get()));
const std::string after_transformation = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %4 "main"
OpExecutionMode %4 OriginUpperLeft
OpSource ESSL 310
OpName %4 "main"
OpName %8 "l"
OpName %10 "g"
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%6 = OpTypeInt 32 1
%7 = OpTypePointer Function %6
%9 = OpTypePointer Private %6
%10 = OpVariable %9 Private
%4 = OpFunction %2 None %3
%5 = OpLabel
%8 = OpVariable %7 Function
%100 = OpCopyObject %9 %10
%101 = OpCopyObject %7 %8
%11 = OpLoad %6 %100
OpStore %101 %11
%12 = OpLoad %6 %101
OpStore %100 %12
OpReturn
OpFunctionEnd
)";
ASSERT_TRUE(IsEqual(env, after_transformation, context.get()));
}
TEST(TransformationReplaceIdWithSynonymTest,
SynonymOfVariableNoGoodInFunctionCall) {
// The following SPIR-V comes from this GLSL, with an object copy added:
//
// #version 310 es
//
// precision highp int;
//
// void foo(int x) { }
//
// void main() {
// int a;
// a = 2;
// foo(a);
// }
const std::string shader = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %4 "main"
OpExecutionMode %4 OriginUpperLeft
OpSource ESSL 310
OpName %4 "main"
OpName %10 "foo(i1;"
OpName %9 "x"
OpName %12 "a"
OpName %14 "param"
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%6 = OpTypeInt 32 1
%7 = OpTypePointer Function %6
%8 = OpTypeFunction %2 %7
%13 = OpConstant %6 2
%4 = OpFunction %2 None %3
%5 = OpLabel
%12 = OpVariable %7 Function
%14 = OpVariable %7 Function
OpStore %12 %13
%15 = OpLoad %6 %12
OpStore %14 %15
%100 = OpCopyObject %7 %14
%16 = OpFunctionCall %2 %10 %14
OpReturn
OpFunctionEnd
%10 = OpFunction %2 None %8
%9 = OpFunctionParameter %7
%11 = OpLabel
OpReturn
OpFunctionEnd
)";
const auto env = SPV_ENV_UNIVERSAL_1_3;
const auto consumer = nullptr;
const auto context = BuildModule(env, consumer, shader, kFuzzAssembleOption);
ASSERT_TRUE(IsValid(env, context.get()));
FactManager fact_manager;
spvtools::ValidatorOptions validator_options;
TransformationContext transformation_context(&fact_manager,
validator_options);
transformation_context.GetFactManager()->AddFact(MakeSynonymFact(14, 100),
context.get());
// Replace %14 with %100 in:
// %16 = OpFunctionCall %2 %10 %14
auto replacement = TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(
14, MakeInstructionDescriptor(16, SpvOpFunctionCall, 0), 1),
100);
ASSERT_FALSE(replacement.IsApplicable(context.get(), transformation_context));
}
TEST(TransformationReplaceIdWithSynonymTest, SynonymsOfAccessChainIndices) {
// The following SPIR-V comes from this GLSL, with object copies added:
//
// #version 310 es
//
// precision highp float;
// precision highp int;
//
// struct S {
// int[3] a;
// vec4 b;
// bool c;
// } d;
//
// float[20] e;
//
// struct T {
// float f;
// S g;
// } h;
//
// T[4] i;
//
// void main() {
// d.a[2] = 10;
// d.b[3] = 11.0;
// d.c = false;
// e[17] = 12.0;
// h.f = 13.0;
// h.g.a[1] = 14;
// h.g.b[0] = 15.0;
// h.g.c = true;
// i[0].f = 16.0;
// i[1].g.a[0] = 17;
// i[2].g.b[1] = 18.0;
// i[3].g.c = true;
// }
const std::string shader = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %4 "main"
OpExecutionMode %4 OriginUpperLeft
OpSource ESSL 310
OpName %4 "main"
OpName %13 "S"
OpMemberName %13 0 "a"
OpMemberName %13 1 "b"
OpMemberName %13 2 "c"
OpName %15 "d"
OpName %31 "e"
OpName %35 "T"
OpMemberName %35 0 "f"
OpMemberName %35 1 "g"
OpName %37 "h"
OpName %50 "i"
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%6 = OpTypeInt 32 1
%7 = OpTypeInt 32 0
%8 = OpConstant %7 3
%9 = OpTypeArray %6 %8
%10 = OpTypeFloat 32
%11 = OpTypeVector %10 4
%12 = OpTypeBool
%13 = OpTypeStruct %9 %11 %12
%14 = OpTypePointer Private %13
%15 = OpVariable %14 Private
%16 = OpConstant %6 0
%17 = OpConstant %6 2
%18 = OpConstant %6 10
%19 = OpTypePointer Private %6
%21 = OpConstant %6 1
%22 = OpConstant %10 11
%23 = OpTypePointer Private %10
%25 = OpConstantFalse %12
%26 = OpTypePointer Private %12
%28 = OpConstant %7 20
%29 = OpTypeArray %10 %28
%30 = OpTypePointer Private %29
%31 = OpVariable %30 Private
%32 = OpConstant %6 17
%33 = OpConstant %10 12
%35 = OpTypeStruct %10 %13
%36 = OpTypePointer Private %35
%37 = OpVariable %36 Private
%38 = OpConstant %10 13
%40 = OpConstant %6 14
%42 = OpConstant %10 15
%43 = OpConstant %7 0
%45 = OpConstantTrue %12
%47 = OpConstant %7 4
%48 = OpTypeArray %35 %47
%49 = OpTypePointer Private %48
%50 = OpVariable %49 Private
%51 = OpConstant %10 16
%54 = OpConstant %10 18
%55 = OpConstant %7 1
%57 = OpConstant %6 3
%4 = OpFunction %2 None %3
%5 = OpLabel
%100 = OpCopyObject %6 %16 ; 0
%101 = OpCopyObject %6 %21 ; 1
%102 = OpCopyObject %6 %17 ; 2
%103 = OpCopyObject %6 %57 ; 3
%104 = OpCopyObject %6 %18 ; 10
%105 = OpCopyObject %6 %40 ; 14
%106 = OpCopyObject %6 %32 ; 17
%107 = OpCopyObject %7 %43 ; 0
%108 = OpCopyObject %7 %55 ; 1
%109 = OpCopyObject %7 %8 ; 3
%110 = OpCopyObject %7 %47 ; 4
%111 = OpCopyObject %7 %28 ; 20
%112 = OpCopyObject %12 %45 ; true
%20 = OpAccessChain %19 %15 %16 %17
OpStore %20 %18
%24 = OpAccessChain %23 %15 %21 %8
OpStore %24 %22
%27 = OpAccessChain %26 %15 %17
OpStore %27 %25
%34 = OpAccessChain %23 %31 %32
OpStore %34 %33
%39 = OpAccessChain %23 %37 %16
OpStore %39 %38
%41 = OpAccessChain %19 %37 %21 %16 %21
OpStore %41 %40
%44 = OpAccessChain %23 %37 %21 %21 %43
OpStore %44 %42
%46 = OpAccessChain %26 %37 %21 %17
OpStore %46 %45
%52 = OpAccessChain %23 %50 %16 %16
OpStore %52 %51
%53 = OpAccessChain %19 %50 %21 %21 %16 %16
OpStore %53 %32
%56 = OpAccessChain %23 %50 %17 %21 %21 %55
OpStore %56 %54
%58 = OpAccessChain %26 %50 %57 %21 %17
OpStore %58 %45
OpReturn
OpFunctionEnd
)";
const auto env = SPV_ENV_UNIVERSAL_1_3;
const auto consumer = nullptr;
const auto context = BuildModule(env, consumer, shader, kFuzzAssembleOption);
ASSERT_TRUE(IsValid(env, context.get()));
FactManager fact_manager;
spvtools::ValidatorOptions validator_options;
TransformationContext transformation_context(&fact_manager,
validator_options);
// Add synonym facts corresponding to the OpCopyObject operations that have
// been applied to all constants in the module.
transformation_context.GetFactManager()->AddFact(MakeSynonymFact(16, 100),
context.get());
transformation_context.GetFactManager()->AddFact(MakeSynonymFact(21, 101),
context.get());
transformation_context.GetFactManager()->AddFact(MakeSynonymFact(17, 102),
context.get());
transformation_context.GetFactManager()->AddFact(MakeSynonymFact(57, 103),
context.get());
transformation_context.GetFactManager()->AddFact(MakeSynonymFact(18, 104),
context.get());
transformation_context.GetFactManager()->AddFact(MakeSynonymFact(40, 105),
context.get());
transformation_context.GetFactManager()->AddFact(MakeSynonymFact(32, 106),
context.get());
transformation_context.GetFactManager()->AddFact(MakeSynonymFact(43, 107),
context.get());
transformation_context.GetFactManager()->AddFact(MakeSynonymFact(55, 108),
context.get());
transformation_context.GetFactManager()->AddFact(MakeSynonymFact(8, 109),
context.get());
transformation_context.GetFactManager()->AddFact(MakeSynonymFact(47, 110),
context.get());
transformation_context.GetFactManager()->AddFact(MakeSynonymFact(28, 111),
context.get());
transformation_context.GetFactManager()->AddFact(MakeSynonymFact(45, 112),
context.get());
// Replacements of the form %16 -> %100
// %20 = OpAccessChain %19 %15 *%16* %17
// Corresponds to d.*a*[2]
// The index %16 used for a cannot be replaced
auto replacement1 = TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(
16, MakeInstructionDescriptor(20, SpvOpAccessChain, 0), 1),
100);
ASSERT_FALSE(
replacement1.IsApplicable(context.get(), transformation_context));
// %39 = OpAccessChain %23 %37 *%16*
// Corresponds to h.*f*
// The index %16 used for f cannot be replaced
auto replacement2 = TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(
16, MakeInstructionDescriptor(39, SpvOpAccessChain, 0), 1),
100);
ASSERT_FALSE(
replacement2.IsApplicable(context.get(), transformation_context));
// %41 = OpAccessChain %19 %37 %21 *%16* %21
// Corresponds to h.g.*a*[1]
// The index %16 used for a cannot be replaced
auto replacement3 = TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(
16, MakeInstructionDescriptor(41, SpvOpAccessChain, 0), 2),
100);
ASSERT_FALSE(
replacement3.IsApplicable(context.get(), transformation_context));
// %52 = OpAccessChain %23 %50 *%16* %16
// Corresponds to i[*0*].f
// The index %16 used for 0 *can* be replaced
auto replacement4 = TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(
16, MakeInstructionDescriptor(52, SpvOpAccessChain, 0), 1),
100);
ASSERT_TRUE(replacement4.IsApplicable(context.get(), transformation_context));
replacement4.Apply(context.get(), &transformation_context);
ASSERT_TRUE(IsValid(env, context.get()));
// %52 = OpAccessChain %23 %50 %16 *%16*
// Corresponds to i[0].*f*
// The index %16 used for f cannot be replaced
auto replacement5 = TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(
16, MakeInstructionDescriptor(52, SpvOpAccessChain, 0), 2),
100);
ASSERT_FALSE(
replacement5.IsApplicable(context.get(), transformation_context));
// %53 = OpAccessChain %19 %50 %21 %21 *%16* %16
// Corresponds to i[1].g.*a*[0]
// The index %16 used for a cannot be replaced
auto replacement6 = TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(
16, MakeInstructionDescriptor(53, SpvOpAccessChain, 0), 3),
100);
ASSERT_FALSE(
replacement6.IsApplicable(context.get(), transformation_context));
// %53 = OpAccessChain %19 %50 %21 %21 %16 *%16*
// Corresponds to i[1].g.a[*0*]
// The index %16 used for 0 *can* be replaced
auto replacement7 = TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(
16, MakeInstructionDescriptor(53, SpvOpAccessChain, 0), 4),
100);
ASSERT_TRUE(replacement7.IsApplicable(context.get(), transformation_context));
replacement7.Apply(context.get(), &transformation_context);
ASSERT_TRUE(IsValid(env, context.get()));
// Replacements of the form %21 -> %101
// %24 = OpAccessChain %23 %15 *%21* %8
// Corresponds to d.*b*[3]
// The index %24 used for b cannot be replaced
auto replacement8 = TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(
21, MakeInstructionDescriptor(24, SpvOpAccessChain, 0), 1),
101);
ASSERT_FALSE(
replacement8.IsApplicable(context.get(), transformation_context));
// %41 = OpAccessChain %19 %37 *%21* %16 %21
// Corresponds to h.*g*.a[1]
// The index %24 used for g cannot be replaced
auto replacement9 = TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(
21, MakeInstructionDescriptor(41, SpvOpAccessChain, 0), 1),
101);
ASSERT_FALSE(
replacement9.IsApplicable(context.get(), transformation_context));
// %41 = OpAccessChain %19 %37 %21 %16 *%21*
// Corresponds to h.g.a[*1*]
// The index %24 used for 1 *can* be replaced
auto replacement10 = TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(
21, MakeInstructionDescriptor(41, SpvOpAccessChain, 0), 3),
101);
ASSERT_TRUE(
replacement10.IsApplicable(context.get(), transformation_context));
replacement10.Apply(context.get(), &transformation_context);
ASSERT_TRUE(IsValid(env, context.get()));
// %44 = OpAccessChain %23 %37 *%21* %21 %43
// Corresponds to h.*g*.b[0]
// The index %24 used for g cannot be replaced
auto replacement11 = TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(
21, MakeInstructionDescriptor(44, SpvOpAccessChain, 0), 1),
101);
ASSERT_FALSE(
replacement11.IsApplicable(context.get(), transformation_context));
// %44 = OpAccessChain %23 %37 %21 *%21* %43
// Corresponds to h.g.*b*[0]
// The index %24 used for b cannot be replaced
auto replacement12 = TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(
21, MakeInstructionDescriptor(44, SpvOpAccessChain, 0), 2),
101);
ASSERT_FALSE(
replacement12.IsApplicable(context.get(), transformation_context));
// %46 = OpAccessChain %26 %37 *%21* %17
// Corresponds to h.*g*.c
// The index %24 used for g cannot be replaced
auto replacement13 = TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(
21, MakeInstructionDescriptor(46, SpvOpAccessChain, 0), 1),
101);
ASSERT_FALSE(
replacement13.IsApplicable(context.get(), transformation_context));
// %53 = OpAccessChain %19 %50 *%21* %21 %16 %16
// Corresponds to i[*1*].g.a[0]
// The index %24 used for 1 *can* be replaced
auto replacement14 = TransformationReplaceIdWithSynonym(
MakeIdUseDescriptor(
21, MakeInstructionDescriptor(53, SpvOpAccessChain, 0), 1),
101);
ASSERT_TRUE(