PR c++/57391
	* semantics.c (cxx_eval_constant_expression): Handle FMA_EXPR.
	(cxx_eval_trinary_expression): Rename from cxx_eval_vec_perm_expr.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@199292 138bc75d-0d04-0410-961f-82ee72b054a4