[Bug target/97653] Incorrect long double calculation with -mabi=ibmlongdouble

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97653

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Without -mabilongdouble the result is correct.

If configured with --with-long-double-format=ibm the result is correct with any
-mabi option.