[PATCH] D27324: IPO: Introduce ThinLTOBitcodeWriter pass.

[Peter Collingbourne via Phabricator via llvm-commits]

pcc created this revision.
pcc added reviewers: mehdi_amini, tejohnson.
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Herald added a subscriber: mgorny.

This pass prepares a module containing type metadata for ThinLTO by splitting
it into regular and thin LTO parts if possible, and writing both parts to
a multi-module bitcode file. Modules that do not contain type metadata are
written unmodified as a single module.

All globals with type metadata are added to the regular LTO module, and
the rest are added to the thin LTO module.


https://reviews.llvm.org/D27324

Files:
  llvm/include/llvm/InitializePasses.h
  llvm/include/llvm/Transforms/IPO.h
  llvm/lib/Transforms/IPO/CMakeLists.txt
  llvm/lib/Transforms/IPO/ThinLTOBitcodeWriter.cpp
  llvm/test/Transforms/ThinLTOBitcodeWriter/no-type-md.ll
  llvm/test/Transforms/ThinLTOBitcodeWriter/split-internal-typeid.ll
  llvm/test/Transforms/ThinLTOBitcodeWriter/split-internal1.ll
  llvm/test/Transforms/ThinLTOBitcodeWriter/split-internal2.ll
  llvm/test/Transforms/ThinLTOBitcodeWriter/split.ll
  llvm/test/Transforms/ThinLTOBitcodeWriter/unsplittable.ll
  llvm/tools/opt/opt.cpp

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