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https://github.com/KhronosGroup/SPIRV-Tools
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6382cbb497
Avoids invalidating all analyses in transformations that add constants, OpUndef and global and local variables.
77 lines
2.8 KiB
C++
77 lines
2.8 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_constant_boolean.h"
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#include "source/fuzz/fuzzer_util.h"
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#include "source/opt/types.h"
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namespace spvtools {
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namespace fuzz {
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TransformationAddConstantBoolean::TransformationAddConstantBoolean(
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protobufs::TransformationAddConstantBoolean message)
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: message_(std::move(message)) {}
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TransformationAddConstantBoolean::TransformationAddConstantBoolean(
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uint32_t fresh_id, bool is_true, bool is_irrelevant) {
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message_.set_fresh_id(fresh_id);
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message_.set_is_true(is_true);
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message_.set_is_irrelevant(is_irrelevant);
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}
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bool TransformationAddConstantBoolean::IsApplicable(
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opt::IRContext* ir_context, const TransformationContext& /*unused*/) const {
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return fuzzerutil::MaybeGetBoolType(ir_context) != 0 &&
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fuzzerutil::IsFreshId(ir_context, message_.fresh_id());
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}
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void TransformationAddConstantBoolean::Apply(
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opt::IRContext* ir_context,
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TransformationContext* transformation_context) const {
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// Add the boolean constant to the module, ensuring the module's id bound is
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// high enough.
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auto new_instruction = MakeUnique<opt::Instruction>(
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ir_context, message_.is_true() ? SpvOpConstantTrue : SpvOpConstantFalse,
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fuzzerutil::MaybeGetBoolType(ir_context), message_.fresh_id(),
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opt::Instruction::OperandList());
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auto new_instruction_ptr = new_instruction.get();
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ir_context->module()->AddGlobalValue(std::move(new_instruction));
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fuzzerutil::UpdateModuleIdBound(ir_context, message_.fresh_id());
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// Inform the def-use manager about the new instruction. Invalidate the
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// constant manager as we have added a new constant.
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ir_context->get_def_use_mgr()->AnalyzeInstDef(new_instruction_ptr);
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ir_context->InvalidateAnalyses(opt::IRContext::kAnalysisConstants);
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if (message_.is_irrelevant()) {
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transformation_context->GetFactManager()->AddFactIdIsIrrelevant(
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message_.fresh_id());
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}
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}
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protobufs::Transformation TransformationAddConstantBoolean::ToMessage() const {
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protobufs::Transformation result;
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*result.mutable_add_constant_boolean() = message_;
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return result;
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}
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std::unordered_set<uint32_t> TransformationAddConstantBoolean::GetFreshIds()
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const {
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return {message_.fresh_id()};
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}
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} // namespace fuzz
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} // namespace spvtools
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