re PR tree-optimization/88464 (AVX-512 vectorization of masked scatter failing with "not suitable for scatter store")

	PR tree-optimization/88464
	* tree-vect-stmts.c (vect_build_gather_load_calls): Handle INTEGER_TYPE
	masktype if mask is non-NULL.
	(vectorizable_load): Don't reject masked gather loads if masktype
	in the decl is INTEGER_TYPE.

	* gcc.target/i386/avx512f-pr88462-1.c: New test.
	* gcc.target/i386/avx512f-pr88462-2.c: New test.

From-SVN: r267097