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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.
66 lines
2.4 KiB
C++
66 lines
2.4 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_SPLIT_BLOCK_H_
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#define SOURCE_FUZZ_TRANSFORMATION_SPLIT_BLOCK_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 TransformationSplitBlock : public Transformation {
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public:
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explicit TransformationSplitBlock(
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const protobufs::TransformationSplitBlock& message);
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TransformationSplitBlock(
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const protobufs::InstructionDescriptor& instruction_to_split_before,
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uint32_t fresh_id);
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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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// - Splitting 'blk' at 'inst', so that all instructions from 'inst' onwards
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// appear in a new block that 'blk' directly jumps to must be valid.
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// - |message_.fresh_id| must not be used by the module.
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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 block with label |message_.fresh_id| is inserted right after 'blk'
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// in program order.
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// - All instructions of 'blk' from 'inst' onwards are moved into the new
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// block.
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// - 'blk' is made to jump unconditionally to the new block.
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// - If 'blk' was dead, the new block is also dead.
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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::TransformationSplitBlock 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_SPLIT_BLOCK_H_
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