[all-commits] [llvm/llvm-project] a32af8: [libc] Add a tool called WrapperGen.

[Siva Chandra via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: a32af8252fde237a3936c4f2f5bee1dfb0cf5ea8
      https://github.com/llvm/llvm-project/commit/a32af8252fde237a3936c4f2f5bee1dfb0cf5ea8
  Author: Siva Chandra Reddy <sivachandra at google.com>
  Date:   2020-07-30 (Thu, 30 Jul 2020)

  Changed paths:
    M libc/utils/CMakeLists.txt
    M libc/utils/LibcTableGenUtil/APIIndexer.cpp
    M libc/utils/LibcTableGenUtil/APIIndexer.h
    A libc/utils/tools/CMakeLists.txt
    A libc/utils/tools/WrapperGen/CMakeLists.txt
    A libc/utils/tools/WrapperGen/Main.cpp

  Log Message:
  -----------
  [libc] Add a tool called WrapperGen.

This tool will be used to generate C wrappers for the C++ LLVM libc
implementations. This change does not hook this tool up to anything yet.
However, it can be useful for cases where one does not want to run the
objcopy step (to insert the C symbol in the object file) but can make use
of LTO to eliminate the cost of the additional wrapper call. This can be
relevant for certain downstream platforms. If this tool can benefit other
libc platforms in general, then it can be integrated into the build system
with options to use or not use the wrappers. An example of such a
platform is CUDA.

Reviewed By: abrachet

Differential Revision: https://reviews.llvm.org/D84848