The various features in ARM Compiler might have different levels of support, ranging from fully supported product features to community features.
A.1 Support level definitions.
A.2 Standards compliance in ARM® Compiler.
A.3 Compliance with the ABI for the ARM Architecture (Base Standard).
A.4 GCC compatibility provided by ARM® Compiler 6.
A.5 Toolchain environment variables.
A.6 Clang and LLVM documentation.
A.7 Further reading.