[PATCH] D152461: [LTO] Add a config option to make the final output bitcode

[Joseph Huber via Phabricator via cfe-commits]

jhuber6 created this revision.
jhuber6 added reviewers: jdoerfert, MaskRay, fhahn, tra, yaxunl, JonChesterfield, tianshilei1992.
Herald added subscribers: ormris, StephenFan, steven_wu, hiraditya, inglorion.
Herald added a project: All.
jhuber6 requested review of this revision.
Herald added projects: clang, LLVM.
Herald added subscribers: llvm-commits, cfe-commits.

The LTO pass currently only offers assembly or object file outputs. We
can obtain the final LLVM output using the hooks, but is inconvenient
and disrupts the flow of the compilation. This patch proposes adding a
convenience function to perform this if the user requires it. We would
like this for the desire to retain the post-optimized LTO bitcode for
LLVM offloading compileations, such as JIT, builtin linking, or
performing a relocatable link on LLVM-IR.

Depends on D152442 <https://reviews.llvm.org/D152442>


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D152461

Files:
  clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp
  llvm/include/llvm/LTO/Config.h
  llvm/lib/LTO/LTOBackend.cpp

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