SPIRV-Tools/source/fuzz/transformation_store.h
Alastair Donaldson 8d4261bc44
spirv-fuzz: Introduce TransformationContext (#3272)
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.
2020-04-02 15:54:46 +01:00

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2.5 KiB
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// Copyright (c) 2020 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef SOURCE_FUZZ_TRANSFORMATION_STORE_H_
#define SOURCE_FUZZ_TRANSFORMATION_STORE_H_
#include "source/fuzz/protobufs/spirvfuzz_protobufs.h"
#include "source/fuzz/transformation.h"
#include "source/fuzz/transformation_context.h"
#include "source/opt/ir_context.h"
namespace spvtools {
namespace fuzz {
class TransformationStore : public Transformation {
public:
explicit TransformationStore(const protobufs::TransformationStore& message);
TransformationStore(
uint32_t pointer_id, uint32_t value_id,
const protobufs::InstructionDescriptor& instruction_to_insert_before);
// - |message_.pointer_id| must be the id of a pointer
// - The pointer type must not have read-only storage class
// - The pointer must not be OpConstantNull or OpUndef
// - |message_.value_id| must be an instruction result id that has the same
// type as the pointee type of |message_.pointer_id|
// - |message_.instruction_to_insert_before| must identify an instruction
// before which it is valid to insert an OpStore, and where both
// |message_.pointer_id| and |message_.value_id| are available (according
// to dominance rules)
// - Either the insertion point must be in a dead block, or it must be known
// that the pointee value of |message_.pointer_id| is irrelevant
bool IsApplicable(
opt::IRContext* ir_context,
const TransformationContext& transformation_context) const override;
// Adds an instruction of the form:
// OpStore |pointer_id| |value_id|
// before the instruction identified by
// |message_.instruction_to_insert_before|.
void Apply(opt::IRContext* ir_context,
TransformationContext* transformation_context) const override;
protobufs::Transformation ToMessage() const override;
private:
protobufs::TransformationStore message_;
};
} // namespace fuzz
} // namespace spvtools
#endif // SOURCE_FUZZ_TRANSFORMATION_STORE_H_