2019-06-04 Richard Biener <rguenther@suse.de>

2019-06-04  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/90738
	Revert
	2019-06-03  Richard Biener  <rguenther@suse.de>

	* tree-ssa-sccvn.c (ao_ref_init_from_vn_reference): Get original
	full reference tree and record in ref->ref.
	(vn_reference_lookup_3): Pass in original ref to
	ao_ref_init_from_vn_reference.
	(vn_reference_lookup): Likewise.
	* tree-ssa-sccvn.h (ao_ref_init_from_vn_reference): Adjust prototype.
	* tree-ssa-alias.c (nonoverlapping_component_refs_of_decl_p):
	Handle non-decl bases in the original reference.

	* gcc.dg/tree-ssa/alias-access-path-1.c: Scan fre1.

	* gcc.dg/torture/pr90738.c: New testcase.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@271902 138bc75d-0d04-0410-961f-82ee72b054a4