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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.
66 lines
2.4 KiB
C++
66 lines
2.4 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_INVERT_COMPARISON_OPERATOR_H_
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#define SOURCE_FUZZ_TRANSFORMATION_INVERT_COMPARISON_OPERATOR_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 TransformationInvertComparisonOperator : public Transformation {
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public:
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explicit TransformationInvertComparisonOperator(
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protobufs::TransformationInvertComparisonOperator message);
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TransformationInvertComparisonOperator(uint32_t operator_id,
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uint32_t fresh_id);
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// - |operator_id| should be a result id of some instruction for which
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// IsInversionSupported returns true.
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// - |fresh_id| must be a fresh id.
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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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// Inverts the opcode of the instruction with result id |operator_id| (e.g >=
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// becomes <) and inserts OpLogicalNot instruction after |operator_id|. Also,
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// changes the result id of OpLogicalNot to |operator_id| and the result id of
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// the inverted operator to |fresh_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 |opcode| is supported by this transformation.
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static bool IsInversionSupported(SpvOp opcode);
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private:
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// Returns an inverted |opcode| (e.g. < becomes >=, == becomes != etc.)
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static SpvOp InvertOpcode(SpvOp opcode);
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protobufs::TransformationInvertComparisonOperator 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_INVERT_COMPARISON_OPERATOR_H_
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