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https://github.com/KhronosGroup/SPIRV-Tools
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64 lines
2.4 KiB
C
64 lines
2.4 KiB
C
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// 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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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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