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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.
64 lines
2.2 KiB
C++
64 lines
2.2 KiB
C++
// Copyright (c) 2020 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_LOAD_H_
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#define SOURCE_FUZZ_TRANSFORMATION_LOAD_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 TransformationLoad : public Transformation {
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public:
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explicit TransformationLoad(const protobufs::TransformationLoad& message);
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TransformationLoad(
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uint32_t fresh_id, uint32_t pointer_id,
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const protobufs::InstructionDescriptor& instruction_to_insert_before);
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// - |message_.fresh_id| must be fresh
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// - |message_.pointer_id| must be the id of a pointer
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// - The pointer must not be OpConstantNull or OpUndef
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// - |message_.instruction_to_insert_before| must identify an instruction
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// before which it is valid to insert an OpLoad, and where
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// |message_.pointer_id| is available (according to dominance rules)
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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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// Adds an instruction of the form:
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// |message_.fresh_id| = OpLoad %type |message_.pointer_id|
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// before the instruction identified by
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// |message_.instruction_to_insert_before|, where %type is the pointer's
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// pointee type.
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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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protobufs::TransformationLoad 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_LOAD_H_
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