[pebers]

Perhaps they mean that within those 1.6 million lines, the only frontend is Clang? But the line count for gcc includes e.g. gfortran as well?

[valarauca1]

The GCC addons (gcc-fortran, gcc-cobal, and gcc-go) just convert the existing language into C that is just ingested into the standard GCC. It was only around 2008 that gcc-c++ stopped doing the internal translation/name mangling dance and gained native first party support [1].

Much like how the older versions of GCC used to just produce ASM files to be ingested into GAS to create the binary objects.

[1] https://lwn.net/Articles/542457/

[lgg]

The link you posted has nothing to do with how GCC does codegen. It is about GCC transitioning itself from being written in C to being written in C++.

[mhh__]

GCC IR is not C