target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-n8:16:32:64"

define <4 x i1> @vector_bitcast() {
    %b = alloca <4 x i1>
    %a = bitcast <4 x i1>* %b to <3 x i1>*
    store <3 x i1> <i1 1,i1 0,i1 1>, <3 x i1>* %a
    %cast = bitcast <3 x i1>* %a to <4 x i1>*
    %vec = load <4 x i1>, <4 x i1>* %cast
    ret <4 x i1> %vec
}