gcc/
	* config/arm/arm.c (neon_vdup_constant, neon_make_constant): New.
	(neon_expand_vector_init): Use them.  Also handle non-constant
	vectors with identical elements and vectors with only one
	non-constant element.
	(arm_print_operand): Handle 'y' modifier.
	* config/arm/arm-protos.h (neon_make_constant): Declare.
	* config/arm/neon.md (neon_vdup_n<mode>): Split into two
	patterns.  Use VX instead of VDQW for the first one.  Allow
	a VFP alternative and V32 modes for the second one.
	* config/arm/neon.ml (shape_elt): Add Alternatives.
	(ops): Use Alternatives for vdup lane instructions.
	* config/arm/neon-testgen.ml (analyze_shape): Handle Alternatives.
	* config/arm/vec-common.md (mov<mode>): Use neon_make_constant.

	gcc/testsuite/
	* gcc.target/arm/neon: Regenerate generated tests.

From-SVN: r154094