[PING][PATCH] [Aarch64] Optimize subtract in shift counts
Ping. Updated patch posted here: https://gcc.gnu.org/ml/gcc-patches/2017-09/msg00964.htm l
[PING][PATCH] [Aarch64] Optimize subtract in shift counts
Ping. Original patch: https://gcc.gnu.org/ml/gcc-patches/2017-08/msg00544.html