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- Distinct metadata needs generating in the codegen to attach correct AAInfo on the loads/stores after lowering, merging, and other relevant transformations. - This patch adds 'MachhineModuleSlotTracker' to help assign slot numbers to these newly generated unnamed metadata nodes. - To help 'MachhineModuleSlotTracker' track machine metadata, the original 'SlotTracker' is rebased from 'AbstractSlotTrackerStorage', which provides basic interfaces to create/retrive metadata slots. In addition, once LLVM IR is processsed, additional hooks are also introduced to help collect machine metadata and assign them slot numbers. - Finally, if there is any such machine metadata, 'MIRPrinter' outputs an additional 'machineMetadataNodes' field containing all the definition of those nodes. Reviewed By: arsenm Differential Revision: https://reviews.llvm.org/D103205
46 lines
1.5 KiB
C++
46 lines
1.5 KiB
C++
//===-- llvm/CodeGen/MachineModuleInfo.h ------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CODEGEN_MACHINEMODULESLOTTRACKER_H
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#define LLVM_CODEGEN_MACHINEMODULESLOTTRACKER_H
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#include "llvm/IR/ModuleSlotTracker.h"
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namespace llvm {
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class AbstractSlotTrackerStorage;
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class Function;
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class MachineModuleInfo;
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class MachineFunction;
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class Module;
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class MachineModuleSlotTracker : public ModuleSlotTracker {
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const Function &TheFunction;
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const MachineModuleInfo &TheMMI;
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unsigned MDNStartSlot, MDNEndSlot;
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void processMachineFunctionMetadata(AbstractSlotTrackerStorage *AST,
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const MachineFunction &MF);
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void processMachineModule(AbstractSlotTrackerStorage *AST, const Module *M,
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bool ShouldInitializeAllMetadata);
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void processMachineFunction(AbstractSlotTrackerStorage *AST,
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const Function *F,
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bool ShouldInitializeAllMetadata);
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public:
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MachineModuleSlotTracker(const MachineFunction *MF,
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bool ShouldInitializeAllMetadata = true);
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~MachineModuleSlotTracker();
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void collectMachineMDNodes(MachineMDNodeListType &L) const;
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};
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} // namespace llvm
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#endif // LLVM_CODEGEN_MACHINEMODULESLOTTRACKER_H
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