[Bug target/124434] long double exceptions are 56x slower

[gnu at skewray dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124434

--- Comment #6 from Brian M. Sutin <gnu at skewray dot com> ---
It's barfing up the pipeline on every loop iteration for only long double, and
the -O1 optimizer knows how to fix the issue.