source/fuzz/fuzzer_pass_add_useful_constructs.cpp - external/github.com/KhronosGroup/SPIRV-Tools - Git at Google

 // 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/fuzzer_pass_add_useful_constructs.h"

 #include "source/fuzz/transformation_add_constant_boolean.h"
 #include "source/fuzz/transformation_add_constant_scalar.h"
 #include "source/fuzz/transformation_add_type_boolean.h"
 #include "source/fuzz/transformation_add_type_float.h"
 #include "source/fuzz/transformation_add_type_int.h"
 #include "source/fuzz/transformation_add_type_pointer.h"

 namespace spvtools {
 namespace fuzz {

 FuzzerPassAddUsefulConstructs::FuzzerPassAddUsefulConstructs(
     opt::IRContext* ir_context, FactManager* fact_manager,
     FuzzerContext* fuzzer_context,
     protobufs::TransformationSequence* transformations)
     : FuzzerPass(ir_context, fact_manager, fuzzer_context, transformations) {}

 FuzzerPassAddUsefulConstructs::~FuzzerPassAddUsefulConstructs() = default;

 void FuzzerPassAddUsefulConstructs::MaybeAddIntConstant(
     uint32_t width, bool is_signed, std::vector<uint32_t> data) const {
   opt::analysis::Integer temp_int_type(width, is_signed);
   assert(GetIRContext()->get_type_mgr()->GetId(&temp_int_type) &&
          "int type should already be registered.");
   auto registered_int_type = GetIRContext()
                                  ->get_type_mgr()
                                  ->GetRegisteredType(&temp_int_type)
                                  ->AsInteger();
   auto int_type_id = GetIRContext()->get_type_mgr()->GetId(registered_int_type);
   assert(int_type_id &&
          "The relevant int type should have been added to the module already.");
   opt::analysis::IntConstant int_constant(registered_int_type, data);
   if (!GetIRContext()->get_constant_mgr()->FindConstant(&int_constant)) {
     TransformationAddConstantScalar add_constant_int =
         TransformationAddConstantScalar(GetFuzzerContext()->GetFreshId(),
                                         int_type_id, data);
     assert(add_constant_int.IsApplicable(GetIRContext(), *GetFactManager()) &&
            "Should be applicable by construction.");
     add_constant_int.Apply(GetIRContext(), GetFactManager());
     *GetTransformations()->add_transformation() = add_constant_int.ToMessage();
   }
 }

 void FuzzerPassAddUsefulConstructs::MaybeAddFloatConstant(
     uint32_t width, std::vector<uint32_t> data) const {
   opt::analysis::Float temp_float_type(width);
   assert(GetIRContext()->get_type_mgr()->GetId(&temp_float_type) &&
          "float type should already be registered.");
   auto registered_float_type = GetIRContext()
                                    ->get_type_mgr()
                                    ->GetRegisteredType(&temp_float_type)
                                    ->AsFloat();
   auto float_type_id =
       GetIRContext()->get_type_mgr()->GetId(registered_float_type);
   assert(
       float_type_id &&
       "The relevant float type should have been added to the module already.");
   opt::analysis::FloatConstant float_constant(registered_float_type, data);
   if (!GetIRContext()->get_constant_mgr()->FindConstant(&float_constant)) {
     TransformationAddConstantScalar add_constant_float =
         TransformationAddConstantScalar(GetFuzzerContext()->GetFreshId(),
                                         float_type_id, data);
     assert(add_constant_float.IsApplicable(GetIRContext(), *GetFactManager()) &&
            "Should be applicable by construction.");
     add_constant_float.Apply(GetIRContext(), GetFactManager());
     *GetTransformations()->add_transformation() =
         add_constant_float.ToMessage();
   }
 }

 void FuzzerPassAddUsefulConstructs::Apply() {
   {
     // Add boolean type if not present.
     opt::analysis::Bool temp_bool_type;
     if (!GetIRContext()->get_type_mgr()->GetId(&temp_bool_type)) {
       auto add_type_boolean =
           TransformationAddTypeBoolean(GetFuzzerContext()->GetFreshId());
       assert(add_type_boolean.IsApplicable(GetIRContext(), *GetFactManager()) &&
              "Should be applicable by construction.");
       add_type_boolean.Apply(GetIRContext(), GetFactManager());
       *GetTransformations()->add_transformation() =
           add_type_boolean.ToMessage();
     }
   }

   {
     // Add signed and unsigned 32-bit integer types if not present.
     for (auto is_signed : {true, false}) {
       opt::analysis::Integer temp_int_type(32, is_signed);
       if (!GetIRContext()->get_type_mgr()->GetId(&temp_int_type)) {
         TransformationAddTypeInt add_type_int = TransformationAddTypeInt(
             GetFuzzerContext()->GetFreshId(), 32, is_signed);
         assert(add_type_int.IsApplicable(GetIRContext(), *GetFactManager()) &&
                "Should be applicable by construction.");
         add_type_int.Apply(GetIRContext(), GetFactManager());
         *GetTransformations()->add_transformation() = add_type_int.ToMessage();
       }
     }
   }

   {
     // Add 32-bit float type if not present.
     opt::analysis::Float temp_float_type(32);
     if (!GetIRContext()->get_type_mgr()->GetId(&temp_float_type)) {
       TransformationAddTypeFloat add_type_float =
           TransformationAddTypeFloat(GetFuzzerContext()->GetFreshId(), 32);
       assert(add_type_float.IsApplicable(GetIRContext(), *GetFactManager()) &&
              "Should be applicable by construction.");
       add_type_float.Apply(GetIRContext(), GetFactManager());
       *GetTransformations()->add_transformation() = add_type_float.ToMessage();
     }
   }

   // Add boolean constants true and false if not present.
   opt::analysis::Bool temp_bool_type;
   auto bool_type = GetIRContext()
                        ->get_type_mgr()
                        ->GetRegisteredType(&temp_bool_type)
                        ->AsBool();
   for (auto boolean_value : {true, false}) {
     // Add OpConstantTrue/False if not already there.
     opt::analysis::BoolConstant bool_constant(bool_type, boolean_value);
     if (!GetIRContext()->get_constant_mgr()->FindConstant(&bool_constant)) {
       TransformationAddConstantBoolean add_constant_boolean(
           GetFuzzerContext()->GetFreshId(), boolean_value);
       assert(add_constant_boolean.IsApplicable(GetIRContext(),
                                                *GetFactManager()) &&
              "Should be applicable by construction.");
       add_constant_boolean.Apply(GetIRContext(), GetFactManager());
       *GetTransformations()->add_transformation() =
           add_constant_boolean.ToMessage();
     }
   }

   // Add signed and unsigned 32-bit integer constants 0 and 1 if not present.
   for (auto is_signed : {true, false}) {
     for (auto value : {0u, 1u}) {
       MaybeAddIntConstant(32, is_signed, {value});
     }
   }

   // Add 32-bit float constants 0.0 and 1.0 if not present.
   uint32_t uint_data[2];
   float float_data[2] = {0.0, 1.0};
   memcpy(uint_data, float_data, sizeof(float_data));
   for (unsigned int& datum : uint_data) {
     MaybeAddFloatConstant(32, {datum});
   }

   // For every known-to-be-constant uniform, make sure we have instructions
   // declaring:
   // - a pointer type with uniform storage class, whose pointee type is the type
   //   of the element
   // - a signed integer constant for each index required to access the element
   // - a constant for the constant value itself
   for (auto& fact_and_type_id :
        GetFactManager()->GetConstantUniformFactsAndTypes()) {
     uint32_t element_type_id = fact_and_type_id.second;
     assert(element_type_id);
     auto element_type =
         GetIRContext()->get_type_mgr()->GetType(element_type_id);
     assert(element_type &&
            "If the constant uniform fact is well-formed, the module must "
            "already have a declaration of the type for the uniform element.");
     opt::analysis::Pointer uniform_pointer(element_type,
                                            SpvStorageClassUniform);
     if (!GetIRContext()->get_type_mgr()->GetId(&uniform_pointer)) {
       auto add_pointer =
           TransformationAddTypePointer(GetFuzzerContext()->GetFreshId(),
                                        SpvStorageClassUniform, element_type_id);
       assert(add_pointer.IsApplicable(GetIRContext(), *GetFactManager()) &&
              "Should be applicable by construction.");
       add_pointer.Apply(GetIRContext(), GetFactManager());
       *GetTransformations()->add_transformation() = add_pointer.ToMessage();
     }
     std::vector<uint32_t> words;
     for (auto word : fact_and_type_id.first.constant_word()) {
       words.push_back(word);
     }
     // We get the element type again as the type manager may have been
     // invalidated since we last retrieved it.
     element_type = GetIRContext()->get_type_mgr()->GetType(element_type_id);
     if (element_type->AsInteger()) {
       MaybeAddIntConstant(element_type->AsInteger()->width(),
                           element_type->AsInteger()->IsSigned(), words);
     } else {
       assert(element_type->AsFloat() &&
              "Known uniform values must be integer or floating-point.");
       MaybeAddFloatConstant(element_type->AsFloat()->width(), words);
     }
     for (auto index :
          fact_and_type_id.first.uniform_buffer_element_descriptor().index()) {
       MaybeAddIntConstant(32, true, {index});
     }
   }
 }

 }  // namespace fuzz
 }  // namespace spvtools
	// 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/fuzzer_pass_add_useful_constructs.h"

	#include "source/fuzz/transformation_add_constant_boolean.h"
	#include "source/fuzz/transformation_add_constant_scalar.h"
	#include "source/fuzz/transformation_add_type_boolean.h"
	#include "source/fuzz/transformation_add_type_float.h"
	#include "source/fuzz/transformation_add_type_int.h"
	#include "source/fuzz/transformation_add_type_pointer.h"

	namespace spvtools {
	namespace fuzz {

	FuzzerPassAddUsefulConstructs::FuzzerPassAddUsefulConstructs(
	opt::IRContext* ir_context, FactManager* fact_manager,
	FuzzerContext* fuzzer_context,
	protobufs::TransformationSequence* transformations)
	: FuzzerPass(ir_context, fact_manager, fuzzer_context, transformations) {}

	FuzzerPassAddUsefulConstructs::~FuzzerPassAddUsefulConstructs() = default;

	void FuzzerPassAddUsefulConstructs::MaybeAddIntConstant(
	uint32_t width, bool is_signed, std::vector<uint32_t> data) const {
	opt::analysis::Integer temp_int_type(width, is_signed);
	assert(GetIRContext()->get_type_mgr()->GetId(&temp_int_type) &&
	"int type should already be registered.");
	auto registered_int_type = GetIRContext()
	->get_type_mgr()
	->GetRegisteredType(&temp_int_type)
	->AsInteger();
	auto int_type_id = GetIRContext()->get_type_mgr()->GetId(registered_int_type);
	assert(int_type_id &&
	"The relevant int type should have been added to the module already.");
	opt::analysis::IntConstant int_constant(registered_int_type, data);
	if (!GetIRContext()->get_constant_mgr()->FindConstant(&int_constant)) {
	TransformationAddConstantScalar add_constant_int =
	TransformationAddConstantScalar(GetFuzzerContext()->GetFreshId(),
	int_type_id, data);
	assert(add_constant_int.IsApplicable(GetIRContext(), *GetFactManager()) &&
	"Should be applicable by construction.");
	add_constant_int.Apply(GetIRContext(), GetFactManager());
	*GetTransformations()->add_transformation() = add_constant_int.ToMessage();
	}
	}

	void FuzzerPassAddUsefulConstructs::MaybeAddFloatConstant(
	uint32_t width, std::vector<uint32_t> data) const {
	opt::analysis::Float temp_float_type(width);
	assert(GetIRContext()->get_type_mgr()->GetId(&temp_float_type) &&
	"float type should already be registered.");
	auto registered_float_type = GetIRContext()
	->get_type_mgr()
	->GetRegisteredType(&temp_float_type)
	->AsFloat();
	auto float_type_id =
	GetIRContext()->get_type_mgr()->GetId(registered_float_type);
	assert(
	float_type_id &&
	"The relevant float type should have been added to the module already.");
	opt::analysis::FloatConstant float_constant(registered_float_type, data);
	if (!GetIRContext()->get_constant_mgr()->FindConstant(&float_constant)) {
	TransformationAddConstantScalar add_constant_float =
	TransformationAddConstantScalar(GetFuzzerContext()->GetFreshId(),
	float_type_id, data);
	assert(add_constant_float.IsApplicable(GetIRContext(), *GetFactManager()) &&
	"Should be applicable by construction.");
	add_constant_float.Apply(GetIRContext(), GetFactManager());
	*GetTransformations()->add_transformation() =
	add_constant_float.ToMessage();
	}
	}

	void FuzzerPassAddUsefulConstructs::Apply() {
	{
	// Add boolean type if not present.
	opt::analysis::Bool temp_bool_type;
	if (!GetIRContext()->get_type_mgr()->GetId(&temp_bool_type)) {
	auto add_type_boolean =
	TransformationAddTypeBoolean(GetFuzzerContext()->GetFreshId());
	assert(add_type_boolean.IsApplicable(GetIRContext(), *GetFactManager()) &&
	"Should be applicable by construction.");
	add_type_boolean.Apply(GetIRContext(), GetFactManager());
	*GetTransformations()->add_transformation() =
	add_type_boolean.ToMessage();
	}
	}

	{
	// Add signed and unsigned 32-bit integer types if not present.
	for (auto is_signed : {true, false}) {
	opt::analysis::Integer temp_int_type(32, is_signed);
	if (!GetIRContext()->get_type_mgr()->GetId(&temp_int_type)) {
	TransformationAddTypeInt add_type_int = TransformationAddTypeInt(
	GetFuzzerContext()->GetFreshId(), 32, is_signed);
	assert(add_type_int.IsApplicable(GetIRContext(), *GetFactManager()) &&
	"Should be applicable by construction.");
	add_type_int.Apply(GetIRContext(), GetFactManager());
	*GetTransformations()->add_transformation() = add_type_int.ToMessage();
	}
	}
	}

	{
	// Add 32-bit float type if not present.
	opt::analysis::Float temp_float_type(32);
	if (!GetIRContext()->get_type_mgr()->GetId(&temp_float_type)) {
	TransformationAddTypeFloat add_type_float =
	TransformationAddTypeFloat(GetFuzzerContext()->GetFreshId(), 32);
	assert(add_type_float.IsApplicable(GetIRContext(), *GetFactManager()) &&
	"Should be applicable by construction.");
	add_type_float.Apply(GetIRContext(), GetFactManager());
	*GetTransformations()->add_transformation() = add_type_float.ToMessage();
	}
	}

	// Add boolean constants true and false if not present.
	opt::analysis::Bool temp_bool_type;
	auto bool_type = GetIRContext()
	->get_type_mgr()
	->GetRegisteredType(&temp_bool_type)
	->AsBool();
	for (auto boolean_value : {true, false}) {
	// Add OpConstantTrue/False if not already there.
	opt::analysis::BoolConstant bool_constant(bool_type, boolean_value);
	if (!GetIRContext()->get_constant_mgr()->FindConstant(&bool_constant)) {
	TransformationAddConstantBoolean add_constant_boolean(
	GetFuzzerContext()->GetFreshId(), boolean_value);
	assert(add_constant_boolean.IsApplicable(GetIRContext(),
	*GetFactManager()) &&
	"Should be applicable by construction.");
	add_constant_boolean.Apply(GetIRContext(), GetFactManager());
	*GetTransformations()->add_transformation() =
	add_constant_boolean.ToMessage();
	}
	}

	// Add signed and unsigned 32-bit integer constants 0 and 1 if not present.
	for (auto is_signed : {true, false}) {
	for (auto value : {0u, 1u}) {
	MaybeAddIntConstant(32, is_signed, {value});
	}
	}

	// Add 32-bit float constants 0.0 and 1.0 if not present.
	uint32_t uint_data[2];
	float float_data[2] = {0.0, 1.0};
	memcpy(uint_data, float_data, sizeof(float_data));
	for (unsigned int& datum : uint_data) {
	MaybeAddFloatConstant(32, {datum});
	}

	// For every known-to-be-constant uniform, make sure we have instructions
	// declaring:
	// - a pointer type with uniform storage class, whose pointee type is the type
	// of the element
	// - a signed integer constant for each index required to access the element
	// - a constant for the constant value itself
	for (auto& fact_and_type_id :
	GetFactManager()->GetConstantUniformFactsAndTypes()) {
	uint32_t element_type_id = fact_and_type_id.second;
	assert(element_type_id);
	auto element_type =
	GetIRContext()->get_type_mgr()->GetType(element_type_id);
	assert(element_type &&
	"If the constant uniform fact is well-formed, the module must "
	"already have a declaration of the type for the uniform element.");
	opt::analysis::Pointer uniform_pointer(element_type,
	SpvStorageClassUniform);
	if (!GetIRContext()->get_type_mgr()->GetId(&uniform_pointer)) {
	auto add_pointer =
	TransformationAddTypePointer(GetFuzzerContext()->GetFreshId(),
	SpvStorageClassUniform, element_type_id);
	assert(add_pointer.IsApplicable(GetIRContext(), *GetFactManager()) &&
	"Should be applicable by construction.");
	add_pointer.Apply(GetIRContext(), GetFactManager());
	*GetTransformations()->add_transformation() = add_pointer.ToMessage();
	}
	std::vector<uint32_t> words;
	for (auto word : fact_and_type_id.first.constant_word()) {
	words.push_back(word);
	}
	// We get the element type again as the type manager may have been
	// invalidated since we last retrieved it.
	element_type = GetIRContext()->get_type_mgr()->GetType(element_type_id);
	if (element_type->AsInteger()) {
	MaybeAddIntConstant(element_type->AsInteger()->width(),
	element_type->AsInteger()->IsSigned(), words);
	} else {
	assert(element_type->AsFloat() &&
	"Known uniform values must be integer or floating-point.");
	MaybeAddFloatConstant(element_type->AsFloat()->width(), words);
	}
	for (auto index :
	fact_and_type_id.first.uniform_buffer_element_descriptor().index()) {
	MaybeAddIntConstant(32, true, {index});
	}
	}
	}

	} // namespace fuzz
	} // namespace spvtools