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https://gitee.com/openharmony/third_party_spirv-tools
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84 lines
3.4 KiB
C++
84 lines
3.4 KiB
C++
// Copyright (c) 2019 Google LLC
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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_SET_LOOP_CONTROL_H_
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#define SOURCE_FUZZ_TRANSFORMATION_SET_LOOP_CONTROL_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 TransformationSetLoopControl : public Transformation {
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public:
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const static uint32_t kLoopControlMaskInOperandIndex = 2;
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const static uint32_t kLoopControlFirstLiteralInOperandIndex = 3;
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explicit TransformationSetLoopControl(
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protobufs::TransformationSetLoopControl message);
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TransformationSetLoopControl(uint32_t block_id, uint32_t loop_control,
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uint32_t peel_count, uint32_t partial_count);
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// - |message_.block_id| must be a block containing an OpLoopMerge
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// instruction.
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// - |message_.loop_control| must be a legal loop control mask that
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// only uses controls available in the SPIR-V version associated with
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// |ir_context|, and must not add loop controls that are only valid in the
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// presence of guarantees about what the loop does (e.g. MinIterations).
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// - |message_.peel_count| (respectively |message_.partial_count|) must be
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// zero PeelCount (respectively PartialCount) is set in
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// |message_.loop_control|.
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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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// - The loop control operand of the OpLoopMergeInstruction in
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// |message_.block_id| is overwritten with |message_.loop_control|.
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// - The literals associated with the loop control are updated to reflect any
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// controls with associated literals that have been removed (e.g.
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// MinIterations), and any that have been added (PeelCount and/or
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// PartialCount).
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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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// Does the version of SPIR-V being used support the PartialCount loop
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// control?
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static bool PartialCountIsSupported(opt::IRContext* ir_context);
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// Does the version of SPIR-V being used support the PeelCount loop control?
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static bool PeelCountIsSupported(opt::IRContext* ir_context);
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private:
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// Returns true if and only if |loop_single_bit_mask| is *not* set in
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// |existing_loop_control| but *is* set in |message_.loop_control|.
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bool LoopControlBitIsAddedByTransformation(
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spv::LoopControlMask loop_control_single_bit_mask,
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uint32_t existing_loop_control_mask) const;
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protobufs::TransformationSetLoopControl 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_SET_LOOP_CONTROL_H_
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