builtins.c (expand_builtin_signbit): Use extract_bit_field instead of gen_highpart or gen_lowpart when...


	* builtins.c (expand_builtin_signbit): Use extract_bit_field instead
	of gen_highpart or gen_lowpart when the floating point format is
	wider than the result mode.

Co-Authored-By: Ulrich Weigand <uweigand@de.ibm.com>

From-SVN: r77439