FYI: Aarch64 Vector ABI calling convention

[Steve Ellcey]

I just wanted to post a pointer to the Aarch64 Vector (SIMD) calling
conventino that has been posted. Â This should open the door for a
libmvec implementation on Aarch64 when it is finalized. Â It appears
that the exact number of callee saved / caller saved registers is still
being discussed (See section 2.1) but it will have different callee
saved / caller saved conventions than the normal Aarch64 calling
convention so that is going to require some GCC and LLVM work to
implement.

https://gcc.gnu.org/ml/gcc/2018-05/msg00120.html

Steve Ellcey
sellcey@cavium.com