On Wed, 1 Aug 2018, Allan Sandfeld Jensen wrote:
extern __inline __m128d __attribute__((__gnu_inline__, __always_inline__,
__artificial__))
_mm_move_sd (__m128d __A, __m128d __B)
{
- return (__m128d) __builtin_ia32_movsd ((__v2df)__A, (__v2df)__B);
+ return __extension__ (__m128d)(__v2df){__B[0],__A[1]};
}
If the goal is to have it represented as a VEC_PERM_EXPR internally, I
wonder if we should be explicit and use __builtin_shuffle instead of
relying on some forwprop pass to transform it. Maybe not, just asking. And
the answer need not even be the same for _mm_move_sd and _mm_move_ss.
--
Marc Glisse
