Ping https://gcc.gnu.org/ml/gcc-patches/2014-07/msg01812.html
(another part of the discussion is around
https://gcc.gnu.org/ml/gcc-patches/2014-06/msg02288.html )
Most people who commented seem cautiously in favor. The least favorable
was Ulrich who suggested to go with it but keep the old behavior
accessible if the user defines some macro (which imho would lose a large
part of the simplification benefits of the patch)
https://gcc.gnu.org/ml/gcc-patches/2014-06/msg02328.html
If this is accepted, I will gladly prepare patches removing the unused
builtins and extending this to a few more operations (integer vectors in
particular). If this is not the direction we want to go, I'd like to hear
it clearly so I can move on...
My main doubt with the current patch is whether it is better to write
simply (both variables have type __m128d):
__A + __B
or, as we will have to do for integers:
(__m128d)((__v2df)__A + (__v2df)__B)
--
Marc Glisse
