<= 256-bit vector fixes.

Author: chriselrod

src/lowering.jl

@@ -573,6 +573,8 @@ function determine_eltype(ls::LoopSet)
     end
     promote_q
 end
+@inline _eltype(x) = eltype(x)
+@inline _eltype(::BitArray) = VectorizationBase.Bit
 function determine_width(
     ls::LoopSet, vectorized::Union{Symbol,Nothing}
 )
@@ -588,7 +590,7 @@ function determine_width(
         push!(vwidth_q.args, ELTYPESYMBOL)
     else
         for array ∈ ls.includedactualarrays
-            push!(vwidth_q.args, Expr(:call, :eltype, array))
+            push!(vwidth_q.args, Expr(:call, lv(:_eltype), array))
         end
     end
     vwidth_q

src/mapreduce.jl

@@ -5,11 +5,11 @@
 @inline vreduce(::typeof(min), v::VectorizationBase.AbstractSIMDVector) = vminimum(v)
 @inline vreduce(op, v::VectorizationBase.AbstractSIMDVector) = _vreduce(op, v)
 @inline _vreduce(op, v::VectorizationBase.AbstractSIMDVector) = _reduce(op, Vec(v))
-@inline function _vreduce(op, v::Vec)
-    isone(length(v)) && return v[1]
-    a = op(v[1], v[2])
-    for i ∈ 3:length(v)
-        a = op(a, v[i])
+_vreduce(op, v::Vec{1}) = VectorizationBase.extractelement(v, 0)
+@inline function _vreduce(op, v::Vec{W}) where {W}
+    a = op(VectorizationBase.extractelement(v,0), VectorizationBase.extractelement(v, 1))
+    for i ∈ 2:W-1
+        a = op(a, VectorizationBase.extractelement(v, i))
     end
     a
 end