------- Additional Comments From steven at gcc dot gnu dot org 2005-08-14 12:22 ------- >From config/i386/mmx.md: ;; Note! Except for the basic move instructions, *all* of these ;; patterns are outside the normal optabs namespace. This is because ;; use of these registers requires the insertion of emms or femms ;; instructions to return to normal fpu mode. The compiler doesn't ;; know how to do that itself, which means it's up to the user. Which ;; means that we should never use any of these patterns except at the ;; direction of the user via a builtin.
-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23376
