LLVM/Clang Can Work Fine As A GCC Replacement For Linux Distributions Written by Michael Larabel in LLVM on 5 February 2024 at 06:57 AM EST. 43 Comments While the performance of LLVM/Clang is on-par with GCC these days on both x86_64 and AArch64 and the C/C++ support is very robust compared to many years ago, most Linux distributions continue using the GCC compiler and GNU toolchain by default. Op