At Linaro, we're working LLVM, Clang and related projects on ARM, as an alternative to GCC. Our focus is to assure the quality and performance of the generated code for ARM+Linux on the Cortex -A* class of processors.
Clang is used as the default system compiler for FreeBSD, Android and OpenMandriva. There are also projects that are looking to use Clang either by default (ex Chromium) or as a side compiler for robustness (ex. Linux Kernel).
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