[PATCH] D27507: [ThinLTO] Add an API to trigger file-based API for returning objects to the linker

[Mehdi AMINI via Phabricator via llvm-commits]

mehdi_amini created this revision.
mehdi_amini added reviewers: tejohnson, pcc.
mehdi_amini added subscribers: llvm-commits, dexonsmith.
Herald added a reviewer: deadalnix.

The motivation is to support better the -object_path_lto option on
Darwin. The linker needs to write down the generate object files on
disk for later use by lldb or dsymutil (debug info are not present
in the final binary). We're moving this into libLTO so that we can
be smarter when a cache is enabled and hard-link when possible
instead of duplicating the files.


https://reviews.llvm.org/D27507

Files:
  llvm/include/llvm-c/lto.h
  llvm/include/llvm/LTO/legacy/ThinLTOCodeGenerator.h
  llvm/include/llvm/Support/FileSystem.h
  llvm/lib/LTO/ThinLTOCodeGenerator.cpp
  llvm/lib/Support/Unix/Path.inc
  llvm/lib/Support/Windows/Path.inc
  llvm/test/ThinLTO/X86/save_objects.ll
  llvm/tools/llvm-lto/llvm-lto.cpp
  llvm/tools/lto/lto.cpp
  llvm/tools/lto/lto.exports

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