Conditional instructions within an IT Block, described as being unpredictable in the ARM® Architecture Reference Manual ARMv8, for ARMv8-A architecture profile pseudo-code, are executed unconditionally.
The Cortex-A53 processor does not implement an unconditional execution policy for the following instructions. Instead all execute conditionally:
NEON instructions new to ARMv8.
All instructions in the ARMv8 Cryptographic Extensions.