* config/m32c/m32c.c (class_sizes): Remove.
	(reduce_class): Change arguments and return type to reg_class_t.
	Change type cc var to HARD_REG_SET. Change type best var to
	reg_class_t. Change type best_size var to unsigned int. Remove
	initialization class_sizes var. Use reg_class_size array instead
	of class_sizes. Use reg_class_contents array instead
	of class_contents.

From-SVN: r177290