2013-03-28  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/37021
	* tree-vect-slp.c (vect_build_slp_tree): When not unrolling
	do not restrict gaps between groups.
	* tree-vect-stmts.c (vectorizable_load): Properly account for
	a gap between groups.

	* gcc.dg/vect/fast-math-slp-38.c: New testcase.
	* gcc.dg/vect/O3-pr36098.c: Un-XFAIL.

From-SVN: r197189