Reduction not Found Error in branching loop

[MasonProtter]

julia> using LoopVectorization

julia> foo!(p::Vector{Float64}) = @avx for i ∈ eachindex(p)
           p[i] = p[i] < 0.5 ? p[i]^2 : p[i]^3
       end
ERROR: LoadError: "Reduction not found."
Stacktrace:
 [1] reduction_zero at /home/mason/.julia/packages/LoopVectorization/zXjmq/src/costs.jl:297 [inlined]
 [2] add_reduction_update_parent!(::Array{LoopVectorization.Operation,1}, ::Array{Symbol,1}, ::Array{Symbol,1}, ::LoopVectorization.LoopSet, ::LoopVectorization.Operation, ::Symbol, ::Int64, ::Int64) at /home/mason/.julia/packages/LoopVectorization/zXjmq/src/add_compute.jl:124
 [3] add_compute!(::LoopVectorization.LoopSet, ::Symbol, ::Expr, ::Int64, ::Int64, ::LoopVectorization.ArrayReferenceMetaPosition) at /home/mason/.julia/packages/LoopVectorization/zXjmq/src/add_compute.jl:239
 [4] add_operation!(::LoopVectorization.LoopSet, ::Symbol, ::Expr, ::LoopVectorization.ArrayReferenceMetaPosition, ::Int64, ::Int64) at /home/mason/.julia/packages/LoopVectorization/zXjmq/src/graphs.jl:496
 [5] add_if!(::LoopVectorization.LoopSet, ::Symbol, ::Expr, ::Int64, ::Int64, ::LoopVectorization.ArrayReferenceMetaPosition) at /home/mason/.julia/packages/LoopVectorization/zXjmq/src/add_ifelse.jl:14
 [6] add_operation!(::LoopVectorization.LoopSet, ::Symbol, ::Expr, ::LoopVectorization.ArrayReferenceMetaPosition, ::Int64, ::Int64) at /home/mason/.julia/packages/LoopVectorization/zXjmq/src/graphs.jl:499
 [7] push!(::LoopVectorization.LoopSet, ::Expr, ::Int64, ::Int64) at /home/mason/.julia/packages/LoopVectorization/zXjmq/src/graphs.jl:534
 [8] add_block!(::LoopVectorization.LoopSet, ::Expr, ::Int64, ::Int64) at /home/mason/.julia/packages/LoopVectorization/zXjmq/src/graphs.jl:336
 [9] add_loop!(::LoopVectorization.LoopSet, ::Expr, ::Int64) at /home/mason/.julia/packages/LoopVectorization/zXjmq/src/graphs.jl:439
 [10] copyto! at /home/mason/.julia/packages/LoopVectorization/zXjmq/src/constructors.jl:6 [inlined]
 [11] LoopVectorization.LoopSet(::Expr, ::Symbol) at /home/mason/.julia/packages/LoopVectorization/zXjmq/src/constructors.jl:52
 [12] LoopVectorization.LoopSet(::Expr, ::Module) at /home/mason/.julia/packages/LoopVectorization/zXjmq/src/constructors.jl:56
 [13] @avx(::LineNumberNode, ::Module, ::Any) at /home/mason/.julia/packages/LoopVectorization/zXjmq/src/constructors.jl:97
in expression starting at REPL[13]:1

[chriselrod]

Fixed by 1f711ed. Added to the tests.