From the clang Wikipedia:
> It uses the LLVM compiler infrastructure as its back end and has been part of the LLVM release cycle since LLVM 2.6.
For a compilation to object file from source code, the vast majority of time for most translation units when building the Linux kernel is spent in the front end of the pipeline, not the middle, or backend.
See also my first plot: https://github.com/ClangBuiltLinux/linux/issues/1086#issueco...
From the clang Wikipedia:
> It uses the LLVM compiler infrastructure as its back end and has been part of the LLVM release cycle since LLVM 2.6.