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https://github.com/KhronosGroup/SPIRV-Tools
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bed84792f9
Adapts all transformation classes so that their protobuf message is passed by value and then moved into the message_ field.
92 lines
3.7 KiB
C++
92 lines
3.7 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_PROPAGATE_INSTRUCTION_UP_H_
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#define SOURCE_FUZZ_TRANSFORMATION_PROPAGATE_INSTRUCTION_UP_H_
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#include <map>
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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 TransformationPropagateInstructionUp : public Transformation {
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public:
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explicit TransformationPropagateInstructionUp(
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protobufs::TransformationPropagateInstructionUp message);
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TransformationPropagateInstructionUp(
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uint32_t block_id,
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const std::map<uint32_t, uint32_t>& predecessor_id_to_fresh_id);
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// - |block_id| must be a valid result id of some OpLabel instruction.
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// - |block_id| must have at least one predecessor
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// - |block_id| must contain an instruction that can be propagated using this
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// transformation
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// - the instruction can be propagated if:
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// - it's not an OpPhi
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// - it is supported by this transformation
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// - it depends only on instructions from different basic blocks or on
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// OpPhi instructions from the same basic block
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// - it should be possible to insert the propagated instruction at the end of
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// each |block_id|'s predecessor
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// - |predecessor_id_to_fresh_id| must have an entry for at least every
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// predecessor of |block_id|
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// - each value in the |predecessor_id_to_fresh_id| map must be a fresh id
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// - all fresh ids in the |predecessor_id_to_fresh_id| must be unique
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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 a copy of the propagated instruction into each |block_id|'s
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// predecessor. Replaces the original instruction with an OpPhi referring
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// inserted copies.
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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 this transformation can be applied to the block with id
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// |block_id|. Concretely, returns true iff:
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// - |block_id| is a valid id of some block in the module
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// - |block_id| has predecessors
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// - |block_id| contains an instruction that can be propagated
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// - it is possible to insert the propagated instruction into every
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// |block_id|'s predecessor
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static bool IsApplicableToBlock(opt::IRContext* ir_context,
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uint32_t block_id);
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private:
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// Returns the instruction that will be propagated into the predecessors of
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// the |block_id|. Returns nullptr if no such an instruction exists.
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static opt::Instruction* GetInstructionToPropagate(opt::IRContext* ir_context,
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uint32_t block_id);
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// Returns true if |opcode| is supported by this transformation.
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static bool IsOpcodeSupported(SpvOp opcode);
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protobufs::TransformationPropagateInstructionUp 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_PROPAGATE_INSTRUCTION_UP_H_
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