middle-end/103181 - fix operation_could_trap_p for vector division

middle-end/103181 - fix operation_could_trap_p for vector division

For integer vector division we only checked for all zero vector
constants rather than checking whether any element in the constant
vector is zero.

2021-11-11  Richard Biener  <rguenther@suse.de>

	PR middle-end/103181
	* tree-eh.c (operation_could_trap_helper_p): Properly
	check vector constants for a zero element for integer
	division.  Separate floating point and integer division code.

	* gcc.dg/torture/pr103181.c: New testcase.