Analysis of information sources in references of the Wikipedia article "AArch64" in Korean language version.
The ARMv8.3-A architecture is now supported. It can be used by specifying the -march=armv8.3-a option. [..] The option -msign-return-address= is supported to enable return address protection using ARMv8.3-A Pointer Authentication Extensions.
pointer authentication extension is defined to be mandatory extension on ARMv8.3-A and is not optional