[PATCH] D23680: [ThinLTO] Emit files for distributed builds for all modules

[Teresa Johnson via llvm-commits]

tejohnson updated this revision to Diff 71952.
tejohnson added a comment.

  Address feedback from earlier review:
  1) Emit empty summaries for files without any GVs that can be imported
  when in ThinLTO mode. This ensures that LTO treats them as ThinLTO
  inputs and schedules ThinLTO backends for them. It required a few
  fixes to handle the empty summaries.
  2) Per offline discussion with Mehdi, for the case where the linker
  is not going to include some of the modules in the final link, in
  the gold-plugin client itself write the dummy empty files expected by the
  distributed build system for all modules.


https://reviews.llvm.org/D23680

Files:
  include/llvm/LTO/LTO.h
  lib/Bitcode/Reader/BitcodeReader.cpp
  lib/Bitcode/Writer/BitcodeWriter.cpp
  lib/LTO/LTO.cpp
  test/ThinLTO/X86/Inputs/emit_imports.ll
  test/ThinLTO/X86/Inputs/empty.ll
  test/ThinLTO/X86/emit_imports.ll
  test/tools/gold/X86/Inputs/thinlto_empty.ll
  test/tools/gold/X86/thinlto_emit_imports.ll
  test/tools/gold/X86/v1.12/thinlto_emit_linked_objects.ll
  tools/gold/gold-plugin.cpp

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