re PR tree-optimization/19049 (not vectorizing a fortran loop)

re PR tree-optimization/19049 (not vectorizing a fortran loop)

2015-10-22  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/19049
	PR tree-optimization/65962
	* tree-vect-data-refs.c (vect_analyze_group_access_1): Fall back
	to strided accesses if single-element interleaving doesn't work.

	* gcc.dg/vect/vect-strided-store-pr65962.c: New testcase.
	* gcc.dg/vect/vect-63.c: Adjust.
	* gcc.dg/vect/vect-70.c: Likewise.
	* gcc.dg/vect/vect-strided-u8-i2-gap.c: Likewise.
	* gcc.dg/vect/vect-strided-a-u8-i2-gap.c: Likewise.
	* gfortran.dg/vect/pr19049.f90: Likewise.
	* gfortran.dg/vect/vect-8.f90: Likewise.

From-SVN: r229172