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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.
70 lines
2.8 KiB
C++
70 lines
2.8 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_REPLACE_PARAMETER_WITH_GLOBAL_H_
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#define SOURCE_FUZZ_TRANSFORMATION_REPLACE_PARAMETER_WITH_GLOBAL_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 TransformationReplaceParameterWithGlobal : public Transformation {
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public:
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explicit TransformationReplaceParameterWithGlobal(
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const protobufs::TransformationReplaceParameterWithGlobal& message);
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TransformationReplaceParameterWithGlobal(uint32_t function_type_fresh_id,
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uint32_t parameter_id,
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uint32_t global_variable_fresh_id);
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// - |function_type_fresh_id| is a fresh id.
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// - |parameter_id| is the result id of the parameter to replace.
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// - |global_variable_fresh_id| is a fresh id.
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// - |function_type_fresh_id| is not equal to |global_variable_fresh_id|.
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// - the function that contains |parameter_id| may not be an entry-point
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// function.
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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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// - Removes parameter with result id |parameter_id| from its function
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// - Adds a global variable to store the value for the parameter
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// - Add an OpStore instruction before each function call to
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// store parameter's value into the variable
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// - Adds OpLoad at the beginning of the function to load the
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// value from the variable into the old parameter's id
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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::TransformationReplaceParameterWithGlobal 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_REPLACE_PARAMETER_WITH_GLOBAL_H_
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