Merge

8147386: assert(size == calc_size) failed: incorrect size calculattion x86_32.ad Summary: incorrect offset used in spill code for vectors Reviewed-by: vlivanov, kvn, mcberg

8147805: aarch64: C1 segmentation fault due to inline Unsafe.getAndSetObject Summary: In Aarch64 LIR_Assembler.atomic_op, keep stored data reference register in decompressed forms as it may be used later Reviewed-by: aph Contributed-by: hui.shi@linaro.org, felix.yang@linaro.org