Fix inference on adjoint operations (fixes #546)

Author: timholy

src/abstractarray.jl

@@ -13,6 +13,8 @@ Base.axes(s::StaticArray) = _axes(Size(s))
 @pure function _axes(::Size{sizes}) where {sizes}
     map(SOneTo, sizes)
 end
+Base.axes(rv::Adjoint{<:Any,<:StaticVector})   = (SOneTo(1), axes(rv.parent)...)
+Base.axes(rv::Transpose{<:Any,<:StaticVector}) = (SOneTo(1), axes(rv.parent)...)
 
 function Base.summary(io::IO, a, inds::Tuple{SOneTo, Vararg{SOneTo}})
     print(io, Base.dims2string(length.(inds)), " ")

test/broadcast.jl

@@ -49,6 +49,10 @@ end
         @test @inferred(v .- m) === @SMatrix [0 -1; 1 0]
         @test @inferred(m .^ v) === @SMatrix [1 2; 81 256]
         @test @inferred(v .^ m) === @SMatrix [1 1; 64 256]
+        # Issue #546
+        @test @inferred(m ./ (v .* v')) === @SMatrix [1.0 0.5; 0.75 0.25]
+        testinf(m, v) = m ./ (v .* v')
+        @test @inferred(testinf(m, v)) === @SMatrix [1.0 0.5; 0.75 0.25]
     end
 
     @testset "2x2 StaticMatrix with 1x2 StaticMatrix" begin