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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.
78 lines
3.2 KiB
C++
78 lines
3.2 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_COPY_OBJECT_H_
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#define SOURCE_FUZZ_TRANSFORMATION_COPY_OBJECT_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 TransformationCopyObject : public Transformation {
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public:
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explicit TransformationCopyObject(
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const protobufs::TransformationCopyObject& message);
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TransformationCopyObject(
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uint32_t object,
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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_.object| must be a result id that is a legitimate operand for
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// OpCopyObject. In particular, it must be the id of an instruction that
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// has a result type
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// - |message_.object| must not be the target of any decoration.
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// TODO(afd): consider copying decorations along with objects.
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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 OpCopyObject instruction directly
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// before 'inst'.
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// - |message_.object| must be available directly before 'inst'.
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// - |message_.object| must not be a null pointer or undefined pointer (so as
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// to make it legal to load from copied pointers).
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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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// - A new instruction,
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// %|message_.fresh_id| = OpCopyObject %ty %|message_.object|
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// is added directly before the instruction at |message_.insert_after_id| +
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// |message_|.offset, where %ty is the type of |message_.object|.
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// - The fact that |message_.fresh_id| and |message_.object| are synonyms
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// is added to the fact manager in |transformation_context|.
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// - If |message_.object| is a pointer whose pointee value is known to be
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// irrelevant, the analogous fact is added to the fact manager in
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// |transformation_context| about |message_.fresh_id|.
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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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protobufs::TransformationCopyObject 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_COPY_OBJECT_H_
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