Modernize ix86_builtin_vectorized_function with corresponding expanders.

Modernize ix86_builtin_vectorized_function with corresponding expanders.

For ifloor/lfloor/iceil/lceil/irint/lrint/iround/lround when size of
in_mode is not equal out_mode, vectorizer doesn't go to internal fn
way,still left that part in the ix86_builtin_vectorized_function.

Remove others builtins and add corresponding expanders.

gcc/ChangeLog:

	PR target/106910
	* config/i386/i386-builtins.cc
	(ix86_builtin_vectorized_function): Modernized with
	corresponding expanders.
	* config/i386/sse.md (lrint<mode><sseintvecmodelower>2): New
	expander.
	(floor<mode>2): Ditto.
	(lfloor<mode><sseintvecmodelower>2): Ditto.
	(ceil<mode>2): Ditto.
	(lceil<mode><sseintvecmodelower>2): Ditto.
	(btrunc<mode>2): Ditto.
	(lround<mode><sseintvecmodelower>2): Ditto.
	(exp2<mode>2): Ditto.