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https://github.com/KhronosGroup/SPIRV-Tools
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fcb22ecf0f
Adds a virtual method, GetFreshIds(), to Transformation. Every transformation uses this to indicate which ids in its protobuf message are fresh ids. This means that when replaying a sequence of transformations the replayer can obtain a smallest id that is not in use by the module already and that will not be used by any transformation by necessity. Ids greater than or equal to this id can be used as overflow ids. Fixes #3851.
71 lines
2.8 KiB
C++
71 lines
2.8 KiB
C++
// Copyright (c) 2020 André Perez Maselco
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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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#ifndef SOURCE_FUZZ_TRANSFORMATION_PUSH_ID_THROUGH_VARIABLE_H_
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#define SOURCE_FUZZ_TRANSFORMATION_PUSH_ID_THROUGH_VARIABLE_H_
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#include "source/fuzz/protobufs/spirvfuzz_protobufs.h"
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#include "source/fuzz/transformation.h"
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#include "source/fuzz/transformation_context.h"
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#include "source/opt/ir_context.h"
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namespace spvtools {
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namespace fuzz {
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class TransformationPushIdThroughVariable : public Transformation {
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public:
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explicit TransformationPushIdThroughVariable(
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const protobufs::TransformationPushIdThroughVariable& message);
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TransformationPushIdThroughVariable(
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uint32_t value_id, uint32_t value_synonym_fresh_id,
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uint32_t variable_fresh_id, uint32_t variable_storage_class,
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uint32_t initializer_id,
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const protobufs::InstructionDescriptor& instruction_descriptor);
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// - |message_.value_id| must be an instruction result id that has the same
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// type as the pointee type of |message_.pointer_id|
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// - |message_.value_synonym_id| must be fresh
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// - |message_.variable_id| must be fresh
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// - |message_.variable_storage_class| must be either StorageClassPrivate or
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// StorageClassFunction
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// - |message_.initializer_id| must be a result id of some constant in the
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// module. Its type must be equal to the pointee type of the variable that
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// will be created.
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// - |message_.instruction_descriptor| must identify an instruction
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// which it is valid to insert the OpStore and OpLoad instructions before it
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// and must be belongs to a reachable block.
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bool IsApplicable(
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opt::IRContext* ir_context,
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const TransformationContext& transformation_context) const override;
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// Stores |value_id| to |variable_id|, loads |variable_id| to
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// |value_synonym_id|. Adds the fact that |value_synonym_id| and |value_id|
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// are synonymous if |value_id| is not irrelevant.
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void Apply(opt::IRContext* ir_context,
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TransformationContext* transformation_context) const override;
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std::unordered_set<uint32_t> GetFreshIds() const override;
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protobufs::Transformation ToMessage() const override;
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private:
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protobufs::TransformationPushIdThroughVariable message_;
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};
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} // namespace fuzz
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} // namespace spvtools
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#endif // SOURCE_FUZZ_TRANSFORMATION_PUSH_ID_THROUGH_VARIABLE_H_
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