gcc/
	* tree.h (tree_base): Add packed_flag and user_align fields.
	Decrease size of spare field.
	(TYPE_USER_ALIGN): Use user_align from tree_base.
	(DECL_USER_ALIGN): Likewise.
	(TYPE_PACKED): Use packed_flag from tree_base.
	(DECL_PACKED): Likewise.
	(tree_type): Delete packed_flag and user_align fields.  Widen
	precision field.  Widen mode field and shuffle fields to align
	mode on an 8-bit boundary.
	(tree_decl_common): Delete decl_flag_1 and user_align fields.
	Renumber decl_flag_* fields.  Fix comments.  Widen
	decl_common_unused field.
	(DECL_HAS_VALUE_EXPR_P): Adjust for renumbering of decl_flag_*
	fields.
	(DECL_EXTERNAL): Likewise.
	(DECL_BIT_FIELD): Likewise.
	(DECL_NONADDRESSABLE_P): Likewise.
	(TYPE_DECL_SUPRESS_DEBUG): Likewise.
	* config/arm/arm-modes.def (XImode): Make it an INT_MODE.

gcc/testsuite/
	* gcc.target/arm/neon-modes-1.c: New test.

From-SVN: r148348