On Wed, Oct 24, 2018 at 02:27:07PM +0200, Richard Biener wrote:
> If vec_sel is really a bitwise merge then there's no choice but using
> BIT_{AND,IOR,NOT}_EXPR for open-coding it. I suppose the
> original builtin expanded to an UNSPEC because there's nothing
> in RTL besides bitwise operations describing the semantics.The machine instructions vsel/xxsel work by bit, yes. Segher
