tree-vect-data-refs.c (vect_find_stmt_data_reference): Handle even zero DR_OFFSET...

tree-vect-data-refs.c (vect_find_stmt_data_reference): Handle even zero DR_OFFSET...

	* tree-vect-data-refs.c (vect_find_stmt_data_reference): Handle
	even zero DR_OFFSET, but DR_BASE_ADDRESS of POINTER_PLUS_EXPR
	containing the offset as possible simd lane access.  Look through
	widening conversion.  Move the
	TREE_CODE (DR_INIT (newdr)) == INTEGER_CST test earlier and reindent.

	* g++.dg/vect/simd-2.cc: Don't xfail, instead expect vectorization on
	x86.
	* g++.dg/vect/simd-5.cc: Likewise.

From-SVN: r272575