[Bug target/84066] Wrong shadow stack register size is saved for x32

[igor.v.tsimbalist at intel dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84066

--- Comment #2 from igor.v.tsimbalist at intel dot com ---
updated __builtin_setjmp and __builtin_longjmp to use 64bit instructions and
registers. The patch is attached.