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https://gitee.com/openharmony/third_party_spirv-tools
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94 lines
3.8 KiB
C++
94 lines
3.8 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_OPT_FIX_STORAGE_CLASS_H_
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#define SOURCE_OPT_FIX_STORAGE_CLASS_H_
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#include <unordered_map>
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#include "source/opt/ir_context.h"
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#include "source/opt/module.h"
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#include "source/opt/pass.h"
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namespace spvtools {
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namespace opt {
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// This pass tries to fix validation error due to a mismatch of storage classes
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// in instructions. There is no guarantee that all such error will be fixed,
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// and it is possible that in fixing these errors, it could lead to other
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// errors.
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class FixStorageClass : public Pass {
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public:
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const char* name() const override { return "fix-storage-class"; }
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Status Process() override;
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// Return the mask of preserved Analyses.
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IRContext::Analysis GetPreservedAnalyses() override {
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return IRContext::kAnalysisDefUse |
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IRContext::kAnalysisInstrToBlockMapping |
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IRContext::kAnalysisCombinators | IRContext::kAnalysisCFG |
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IRContext::kAnalysisDominatorAnalysis |
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IRContext::kAnalysisLoopAnalysis | IRContext::kAnalysisNameMap |
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IRContext::kAnalysisConstants | IRContext::kAnalysisTypes;
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}
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private:
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// Changes the storage class of the result of |inst| to |storage_class| in
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// appropriate, and propagates the change to the users of |inst| as well.
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// Returns true of any changes were made.
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// |seen| is used to track OpPhi instructions that should not be processed.
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bool PropagateStorageClass(Instruction* inst, spv::StorageClass storage_class,
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std::set<uint32_t>* seen);
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// Changes the storage class of the result of |inst| to |storage_class|.
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// Is it assumed that the result type of |inst| is a pointer type.
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// Propagates the change to the users of |inst| as well.
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// Returns true of any changes were made.
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// |seen| is used to track OpPhi instructions that should not be processed by
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// |PropagateStorageClass|
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void FixInstructionStorageClass(Instruction* inst,
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spv::StorageClass storage_class,
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std::set<uint32_t>* seen);
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// Changes the storage class of the result of |inst| to |storage_class|. The
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// result type of |inst| must be a pointer.
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void ChangeResultStorageClass(Instruction* inst,
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spv::StorageClass storage_class) const;
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// Returns true if the result type of |inst| is a pointer.
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bool IsPointerResultType(Instruction* inst);
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// Returns true if the result of |inst| is a pointer to storage class
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// |storage_class|.
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bool IsPointerToStorageClass(Instruction* inst,
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spv::StorageClass storage_class);
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// Change |inst| to match that operand |op_idx| now has type |type_id|, and
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// adjust any uses of |inst| accordingly. Returns true if the code changed.
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bool PropagateType(Instruction* inst, uint32_t type_id, uint32_t op_idx,
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std::set<uint32_t>* seen);
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// Changes the result type of |inst| to |new_type_id|.
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bool ChangeResultType(Instruction* inst, uint32_t new_type_id);
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// Returns the type id of the member of the type |id| that would be returned
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// by following the indices of the access chain instruction |inst|.
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uint32_t WalkAccessChainType(Instruction* inst, uint32_t id);
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};
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} // namespace opt
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} // namespace spvtools
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#endif // SOURCE_OPT_FIX_STORAGE_CLASS_H_
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