[PATCH] D31508: [ThinLTO] Set up lto::Config properly for codegen in ThinLTO backends

[Teresa Johnson via Phabricator via cfe-commits]

tejohnson created this revision.
Herald added a subscriber: Prazek.

This involved refactoring out pieces of
EmitAssemblyHelper::CreateTargetMachine for use in runThinLTOBackend.

Subsumes https://reviews.llvm.org/D31114.


https://reviews.llvm.org/D31508

Files:
  lib/CodeGen/BackendUtil.cpp
  test/CodeGen/function-sections.c

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