vect: Adjust vect_transform_reduction assertion [PR114883]

vect: Adjust vect_transform_reduction assertion [PR114883]

The assertion doesn't allow IFN_COND_MIN/IFN_COND_MAX, which are
commutative conditional binary operations like ADD/MUL/AND/IOR/XOR,
and can be handled just fine.
In particular, we emit
        vminpd  %zmm3, %zmm5, %zmm0{%k2}
        vminpd  %zmm0, %zmm3, %zmm5{%k1}
and
        vmaxpd  %zmm3, %zmm5, %zmm0{%k2}
        vmaxpd  %zmm0, %zmm3, %zmm5{%k1}
in the vectorized loops of the first and second subroutine.

2024-04-30  Jakub Jelinek  <jakub@redhat.com>
	    Hongtao Liu  <hongtao.liu@intel.com>

	PR tree-optimization/114883
	* tree-vect-loop.cc (vect_transform_reduction): Allow IFN_COND_MIN and
	IFN_COND_MAX in the assert.

	* gfortran.dg/pr114883.f90: New test.