2018-10-24  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/87105
	* tree-vect-data-refs.c (vect_analyze_group_access_1): Adjust
	dump classification.
	(vect_analyze_data_ref_accesses): Handle duplicate loads and
	stores by splitting the affected group after the fact.
	* tree-vect-slp.c (vect_build_slp_tree_2): Dump when we
	fail the SLP build because of size constraints.

	* gcc.dg/vect/bb-slp-39.c: New testcase.
	* gfortran.dg/vect/pr83232.f90: Un-XFAIL.

From-SVN: r265457