[Bug target/80706] peephole2 uses uninitialized stack variables on i686

[staticfloat at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80706

--- Comment #1 from Elliot Saba <staticfloat at gmail dot com> ---
I should also note that this is fixed if I provide `-mfpmath=sse` in addition
to any other optimization flags.