Hi Bill, On Thu, Feb 16, 2017 at 02:16:02PM -0600, Bill Schmidt wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79261 records that the interface > vec_xxpermdi isn't implemented in a bi-endian fashion; instead, it produces > results appropriate for big-endian vector element numbering even when run on > a little endian machine. This is not part of the "official vector API" from > the ELFv2 ABI document, but should still have appropriate bi-endian behavior.
Maybe this needs adding (or updating) some documentation? > +;; Special version of xxpermdi that retains big-endian semantics. > +(define_expand "vsx_xxpermdi_<mode>_be" > + [(match_operand:VSX_L 0 "vsx_register_operand" "") > + (match_operand:VSX_L 1 "vsx_register_operand" "") > + (match_operand:VSX_L 2 "vsx_register_operand" "") > + (match_operand:QI 3 "u5bit_cint_operand" "")] Please remove the "". Okay with that and perhaps some doc changes. Thanks, Segher
