[PATCH] D103205: [MIRPrinter] Add machine metadata support.

[Michael Liao via Phabricator via llvm-commits]

hliao created this revision.
hliao added reviewers: nikic, jeroen.dobbelaere.
Herald added subscribers: dexonsmith, mgrang, hiraditya, mgorny.
hliao requested review of this revision.
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.

- 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.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D103205

Files:
  llvm/include/llvm/CodeGen/MIRYamlMapping.h
  llvm/include/llvm/CodeGen/MachineModuleSlotTracker.h
  llvm/include/llvm/IR/ModuleSlotTracker.h
  llvm/lib/CodeGen/CMakeLists.txt
  llvm/lib/CodeGen/MIRPrinter.cpp
  llvm/lib/CodeGen/MachineModuleSlotTracker.cpp
  llvm/lib/IR/AsmWriter.cpp
  llvm/unittests/CodeGen/CMakeLists.txt
  llvm/unittests/CodeGen/MachineMetadata.cpp

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