[PATCH] D142133: [LinkerWrapper] Use `clang` to perform the device linking

[Joseph Huber via Phabricator via cfe-commits]

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Right now in the linker wrapper we manually invoke a lot of the
toolchain programs. This reproduces a lot of logic that is already
handled in clang. Since D140158 <https://reviews.llvm.org/D140158> we can now target all supported
toolchains directly via cross-compilation.

This patch changes the linker wrapper to consolidate all the alternate
linking and assembler steps into a generic call to `clang` and let clang
handle the argument handling. This heavily simplifies the interface.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D142133

Files:
  clang/test/Driver/linker-wrapper.c
  clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp

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