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https://github.com/KhronosGroup/SPIRV-Tools
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38d7fbaad0
This change adds several transformations that allow types, constants, undefined values and global variables to be added to a module.
63 lines
2.3 KiB
C++
63 lines
2.3 KiB
C++
// Copyright (c) 2019 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "source/fuzz/transformation_add_global_undef.h"
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#include "source/fuzz/fuzzer_util.h"
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namespace spvtools {
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namespace fuzz {
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TransformationAddGlobalUndef::TransformationAddGlobalUndef(
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const spvtools::fuzz::protobufs::TransformationAddGlobalUndef& message)
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: message_(message) {}
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TransformationAddGlobalUndef::TransformationAddGlobalUndef(uint32_t fresh_id,
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uint32_t type_id) {
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message_.set_fresh_id(fresh_id);
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message_.set_type_id(type_id);
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}
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bool TransformationAddGlobalUndef::IsApplicable(
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opt::IRContext* context,
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const spvtools::fuzz::FactManager& /*unused*/) const {
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// A fresh id is required.
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if (!fuzzerutil::IsFreshId(context, message_.fresh_id())) {
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return false;
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}
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auto type = context->get_type_mgr()->GetType(message_.type_id());
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// The type must exist, and must not be a function type.
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return type && !type->AsFunction();
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}
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void TransformationAddGlobalUndef::Apply(
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opt::IRContext* context, spvtools::fuzz::FactManager* /*unused*/) const {
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context->module()->AddGlobalValue(MakeUnique<opt::Instruction>(
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context, SpvOpUndef, message_.type_id(), message_.fresh_id(),
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opt::Instruction::OperandList()));
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fuzzerutil::UpdateModuleIdBound(context, message_.fresh_id());
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// We have added an instruction to the module, so need to be careful about the
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// validity of existing analyses.
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context->InvalidateAnalysesExceptFor(opt::IRContext::Analysis::kAnalysisNone);
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}
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protobufs::Transformation TransformationAddGlobalUndef::ToMessage() const {
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protobufs::Transformation result;
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*result.mutable_add_global_undef() = message_;
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return result;
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}
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} // namespace fuzz
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} // namespace spvtools
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