[Bug rtl-optimization/94665] missed minmax optimization opportunity for if/else structure.

[z.zhanghaijian at huawei dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94665

--- Comment #13 from z.zhanghaijian at huawei dot com <z.zhanghaijian at huawei dot com> ---
When change to flag_finite_math_only, this fmaxnm can also be generated with
the patch above(swap the true_rtx/false_rtx).