[Bug target/123859] aarch64: wrong code with _BitInt() and multiple __builtin_add/mul_overflow() at -O1

[zsojka at seznam dot cz via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123859

--- Comment #3 from Zdenek Sojka <zsojka at seznam dot cz> ---
This got fixed between r16-7239 (BAD) and r16-7278 (OK), maybe due to the
PR122689 fix.