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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.
96 lines
3.7 KiB
C++
96 lines
3.7 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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#ifndef SOURCE_FUZZ_TRANSFORMATION_COMPOSITE_CONSTRUCT_H_
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#define SOURCE_FUZZ_TRANSFORMATION_COMPOSITE_CONSTRUCT_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 TransformationCompositeConstruct : public Transformation {
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public:
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explicit TransformationCompositeConstruct(
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const protobufs::TransformationCompositeConstruct& message);
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TransformationCompositeConstruct(
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uint32_t composite_type_id, std::vector<uint32_t> component,
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const protobufs::InstructionDescriptor& instruction_to_insert_before,
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uint32_t fresh_id);
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// - |message_.fresh_id| must not be used by the module.
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// - |message_.composite_type_id| must be the id of a composite type
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// - The elements of |message_.component| must be result ids that are
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// suitable for constructing an element of the given composite type, in
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// order
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// - The elements of |message_.component| must not be the target of any
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// decorations.
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// - |message_.base_instruction_id| must be the result id of an instruction
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// 'base' in some block 'blk'.
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// - 'blk' must contain an instruction 'inst' located |message_.offset|
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// instructions after 'base' (if |message_.offset| = 0 then 'inst' =
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// 'base').
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// - It must be legal to insert an OpCompositeConstruct instruction directly
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// before 'inst'.
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// - Each element of |message_.component| must be available directly before
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// 'inst'.
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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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// Inserts a new OpCompositeConstruct instruction, with id
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// |message_.fresh_id|, directly before the instruction identified by
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// |message_.base_instruction_id| and |message_.offset|. The instruction
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// creates a composite of type |message_.composite_type_id| using the ids of
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// |message_.component|.
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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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// Helper to decide whether the components of the transformation are suitable
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// for constructing an array of the given type.
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bool ComponentsForArrayConstructionAreOK(
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opt::IRContext* ir_context, const opt::analysis::Array& array_type) const;
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// Similar, but for matrices.
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bool ComponentsForMatrixConstructionAreOK(
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opt::IRContext* ir_context,
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const opt::analysis::Matrix& matrix_type) const;
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// Similar, but for structs.
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bool ComponentsForStructConstructionAreOK(
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opt::IRContext* ir_context,
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const opt::analysis::Struct& struct_type) const;
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// Similar, but for vectors.
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bool ComponentsForVectorConstructionAreOK(
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opt::IRContext* ir_context,
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const opt::analysis::Vector& vector_type) const;
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protobufs::TransformationCompositeConstruct 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_COMPOSITE_CONSTRUCT_H_
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