http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48262
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> 2011-03-23
23:40:18 UTC ---
;; Under VSX, vectors of 4/8 byte alignments do not need to be aligned
;; since the load already handles it.
(define_expand "movmisalign<mode>"
[(set (match_operand:VEC_N 0 "vfloat_operand" "")
(match_operand:VEC_N 1 "vfloat_operand" ""))]
"VECTOR_MEM_VSX_P (<MODE>mode) && TARGET_ALLOW_MOVMISALIGN"
"")
Only accepts registers while expr.c thinks the operands should allow memory
too.