[PATCH] D14838: [ThinLTO] Metadata linking for imported functions

[Teresa Johnson via llvm-commits]

tejohnson created this revision.
tejohnson added reviewers: dexonsmith, joker.eph.
tejohnson added subscribers: llvm-commits, davidxl.
tejohnson added a dependency: D14825: [ThinLTO] Add MODULE_CODE_METADATA_VALUES record.
Herald added a subscriber: joker.eph.

Second patch split out from http://reviews.llvm.org/D14752.

Maps metadata as a post-pass from each module when importing complete,
suturing up final metadata to the temporary metadata left on the
imported instructions.

This entails saving the mapping from bitcode value id to temporary
metadata in the importing pass, and from bitcode value id to final
metadata during the metadata linking postpass.

Depends on D14825.

http://reviews.llvm.org/D14838

Files:
  include/llvm/IR/DebugInfoMetadata.h
  include/llvm/IR/GVMaterializer.h
  include/llvm/IR/Metadata.h
  include/llvm/IR/TrackingMDRef.h
  include/llvm/IRReader/IRReader.h
  include/llvm/Linker/Linker.h
  include/llvm/Transforms/Utils/ValueMapper.h
  lib/Bitcode/Reader/BitcodeReader.cpp
  lib/IR/Metadata.cpp
  lib/IRReader/IRReader.cpp
  lib/Linker/LinkModules.cpp
  lib/Transforms/Utils/ValueMapper.cpp
  test/Linker/Inputs/thinlto_funcimport_debug.ll
  test/Linker/thinlto_funcimport_debug.ll
  tools/llvm-link/llvm-link.cpp

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