Sample sessions with experimental Julia with SLPVectorizer enabled.

gistfile1.txt

julia> function foo( a::NTuple{4,Float32}, b::NTuple{4,Float32} )
           (a[1]+b[1],a[2]+b[2],a[3]+b[3],a[4]+b[4])
       end
foo (generic function with 1 method)

julia> t = NTuple{4,Float32}
(Float32,Float32,Float32,Float32)

julia> code_llvm(foo,(t,t))

define <4 x float> @julia_foo111(<4 x float>, <4 x float>) {
top:
  %2 = extractelement <4 x float> %0, i32 0, !dbg !8
  %3 = extractelement <4 x float> %1, i32 0, !dbg !8
  %4 = fadd float %2, %3, !dbg !8
  %5 = insertelement <4 x float> undef, float %4, i32 0, !dbg !8, !julia_type !9
  %6 = extractelement <4 x float> %0, i32 1, !dbg !8
  %7 = extractelement <4 x float> %1, i32 1, !dbg !8
  %8 = fadd float %6, %7, !dbg !8
  %9 = insertelement <4 x float> %5, float %8, i32 1, !dbg !8, !julia_type !10
  %10 = extractelement <4 x float> %0, i32 2, !dbg !8
  %11 = extractelement <4 x float> %1, i32 2, !dbg !8
  %12 = fadd float %10, %11, !dbg !8
  %13 = insertelement <4 x float> %9, float %12, i32 2, !dbg !8, !julia_type !11
  %14 = extractelement <4 x float> %0, i32 3, !dbg !8
  %15 = extractelement <4 x float> %1, i32 3, !dbg !8
  %16 = fadd float %14, %15, !dbg !8
  %17 = insertelement <4 x float> %13, float %16, i32 3, !dbg !8, !julia_type !12
  ret <4 x float> %17, !dbg !8
}

julia> function bar( a::NTuple{4,Float32}, b::NTuple{4,Float32} )
           c1=a[1]+b[1]
           c2=a[2]+b[2]
           c3=a[3]+b[3]
           c4=a[4]+b[4]
           (c1,c2,c3,c4)
       end
bar (generic function with 1 method)

julia> code_llvm(bar,(t,t))

define <4 x float> @julia_bar112(<4 x float>, <4 x float>) {
top:
  %2 = fadd <4 x float> %0, %1, !dbg !8
  ret <4 x float> %2, !dbg !9
}