completely_scalarize arrays as well as records.

completely_scalarize arrays as well as records.

gcc/:

	PR tree-optimization/67283
	* tree-sra.c (type_consists_of_records_p): Rename to...
	(scalarizable_type_p): ...this, add case for ARRAY_TYPE.
	(completely_scalarize_record): Rename to...
	(completely_scalarize): ...this, add ARRAY_TYPE case, move some code to:
	(scalarize_elem): New.
	(analyze_all_variable_accesses): Follow renamings.

gcc/testsuite/:

	* gcc.dg/tree-ssa/sra-15.c: New.
	* gcc.dg/tree-ssa/sra-16.c: New.

From-SVN: r227901