arm.c (arm_preferred_simd_mode): Check TARGET_NEON_VECTORIZE_DOUBLE instead of TARGET_NEON_VECTORIZE_QUAD.


	* config/arm/arm.c (arm_preferred_simd_mode): Check
	TARGET_NEON_VECTORIZE_DOUBLE instead of
	TARGET_NEON_VECTORIZE_QUAD.
	(arm_autovectorize_vector_sizes): Likewise.
	* config/arm/arm.opt (mvectorize-with-neon-quad): Make inverse
	mask of mvectorize-with-neon-double.  Add RejectNegative.
	(mvectorize-with-neon-double): New.

From-SVN: r178588