[Bug tree-optimization/106164] (a > b) & (a >= b) does not get optimized until reassoc1

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106164

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I think I have a better patch.

There are patterns for:
Convert (X OP1 CST1) || (X OP2 CST2).

externding them easily to support:
Convert (X OP1 Y) || (X OP2 Y).
is a few lines.
Don't even need to call combine_comparisons either.

Once I test it I will submit the patch.