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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.
75 lines
3.0 KiB
C++
75 lines
3.0 KiB
C++
// Copyright (c) 2020 Vasyl Teliman
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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_ADD_PARAMETER_H_
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#define SOURCE_FUZZ_TRANSFORMATION_ADD_PARAMETER_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 TransformationAddParameter : public Transformation {
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public:
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explicit TransformationAddParameter(
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const protobufs::TransformationAddParameter& message);
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TransformationAddParameter(uint32_t function_id, uint32_t parameter_fresh_id,
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uint32_t parameter_type_id,
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std::map<uint32_t, uint32_t> call_parameter_ids,
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uint32_t function_type_fresh_id);
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// - |function_id| must be a valid result id of some non-entry-point function
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// in the module.
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// - |parameter_type_id| is a type id of the new parameter. The type must be
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// supported by this transformation as specified by IsParameterTypeSupported
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// function.
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// - |call_parameter_id| must map from every id of an OpFunctionCall
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// instruction of this function to the id that will be passed as the new
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// parameter at that call site. There could be no callers, therefore this
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// map can be empty.
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// - |parameter_fresh_id| and |function_type_fresh_id| are fresh ids and are
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// not equal.
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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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// - Creates a new OpFunctionParameter instruction with result id
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// |parameter_fresh_id| for the function with |function_id|.
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// - Adjusts function's type to include a new parameter.
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// - Adds an argument to every caller of the function to account for the added
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// parameter. The argument is the value in |call_parameter_id| map.
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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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// Returns true if the type of the parameter is supported by this
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// transformation.
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static bool IsParameterTypeSupported(const opt::analysis::Type& type);
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private:
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protobufs::TransformationAddParameter 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_ADD_PARAMETER_H_
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