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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.
61 lines
2.2 KiB
C++
61 lines
2.2 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_SWAP_CONDITIONAL_BRANCH_OPERANDS_H_
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#define SOURCE_FUZZ_TRANSFORMATION_SWAP_CONDITIONAL_BRANCH_OPERANDS_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 TransformationSwapConditionalBranchOperands : public Transformation {
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public:
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explicit TransformationSwapConditionalBranchOperands(
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const protobufs::TransformationSwapConditionalBranchOperands& message);
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TransformationSwapConditionalBranchOperands(
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const protobufs::InstructionDescriptor& instruction_descriptor,
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uint32_t fresh_id);
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// - |message_.instruction_descriptor| must be a valid descriptor of some
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// OpBranchConditional instruction in the module.
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// - |message_.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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// Inserts |%fresh_id = OpLogicalNot %bool_type_id %cond_id| before
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// |OpBranchConditional %cond_id %branch_a %branch_b [%weight_a %weight_b]|.
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// Replaces %cond_id with %fresh_id and swaps %branch_* and %weight_*
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// operands.
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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::TransformationSwapConditionalBranchOperands 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_SWAP_CONDITIONAL_BRANCH_OPERANDS_H_
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