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https://github.com/KhronosGroup/SPIRV-Tools
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Some transformations (e.g. TransformationAddFunction) rely on running the validator to decide whether the transformation is applicable. A recent change allowed spirv-fuzz to take validator options, to cater for the case where a module should be considered valid under particular conditions. However, validation during the checking of transformations had no access to these validator options. This change introduced TransformationContext, which currently consists of a fact manager and a set of validator options, but could in the future have other fields corresponding to other objects that it is useful to have access to when applying transformations. Now, instead of checking and applying transformations in the context of a FactManager, a TransformationContext is used. This gives access to the fact manager as before, and also access to the validator options when they are needed.
86 lines
3.7 KiB
C++
86 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_VECTOR_SHUFFLE_H_
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#define SOURCE_FUZZ_TRANSFORMATION_VECTOR_SHUFFLE_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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#include "source/opt/types.h"
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namespace spvtools {
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namespace fuzz {
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class TransformationVectorShuffle : public Transformation {
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public:
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explicit TransformationVectorShuffle(
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const protobufs::TransformationVectorShuffle& message);
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TransformationVectorShuffle(
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const protobufs::InstructionDescriptor& instruction_to_insert_before,
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uint32_t fresh_id, uint32_t vector1, uint32_t vector2,
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const std::vector<uint32_t>& component);
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// - |message_.fresh_id| must not be in use
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// - |message_.instruction_to_insert_before| must identify an instruction
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// before which it is legitimate to insert an OpVectorShuffle
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// - |message_.vector1| and |message_.vector2| must be instructions of vector
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// type, and the element types of these vectors must be the same
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// - Each element of |message_.component| must either be 0xFFFFFFFF
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// (representing an undefined component), or must be less than the combined
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// sizes of the input vectors
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// - The module must already contain a vector type with the same element type
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// as |message_.vector1| and |message_.vector2|, and with the size of
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// |message_component| as its element count
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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 an OpVectorShuffle instruction before
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// |message_.instruction_to_insert_before|, shuffles vectors
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// |message_.vector1| and |message_.vector2| using the indices provided by
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// |message_.component|, into |message_.fresh_id|. Adds a fact to the fact
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// manager recording the fact each element of |message_.fresh_id| is
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// synonymous with the element of |message_.vector1| or |message_.vector2|
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// from which it came (with undefined components being ignored). If the
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// result vector is a contiguous sub-range of one of the input vectors, a
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// fact is added to record that |message_.fresh_id| is synonymous with this
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// sub-range.
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void Apply(opt::IRContext* ir_context,
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TransformationContext* transformation_context) const override;
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protobufs::Transformation ToMessage() const override;
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private:
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// Returns a type id that already exists in |ir_context| suitable for
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// representing the result of the shuffle, where |element_type| is known to
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// be the common element type of the vectors to which the shuffle is being
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// applied. Returns 0 if no such id exists.
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uint32_t GetResultTypeId(opt::IRContext* ir_context,
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const opt::analysis::Type& element_type) const;
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static opt::analysis::Vector* GetVectorType(opt::IRContext* ir_context,
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uint32_t id_of_vector);
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protobufs::TransformationVectorShuffle 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_VECTOR_SHUFFLE_H_
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