On 03/15/12 13:09, Jakub Jelinek wrote:
> Hi!
>
> As noted in the PR, we can vectorize e.g. V4DFmode
> __builtin_shuffle (, {1, 2, 3, 0}) in 3 insns, some intra-lane
> permutation, followed by swapping of the lanes (vperm2f128) and
> finally vblend{pd,ps} that merges in the registers with non-swap
Hi!
As noted in the PR, we can vectorize e.g. V4DFmode
__builtin_shuffle (, {1, 2, 3, 0}) in 3 insns, some intra-lane
permutation, followed by swapping of the lanes (vperm2f128) and
finally vblend{pd,ps} that merges in the registers with non-swapped
and swapped lanes.
Bootstrapped/regtested on x8
