Ensure linearindices completely inlines (through _length)

Author: mbauman

base/abstractarray.jl

@@ -120,10 +120,10 @@ julia> length(A)
 60
 ```
 """
-length(t::AbstractArray) = prod(size(t))
-_length(A::AbstractArray) = prod(map(unsafe_length, indices(A))) # circumvent missing size
-_length(A) = length(A)
-endof(a::AbstractArray) = length(a)
+length(t::AbstractArray) = (@_inline_meta; prod(size(t)))
+_length(A::AbstractArray) = (@_inline_meta; prod(map(unsafe_length, indices(A)))) # circumvent missing size
+_length(A) = (@_inline_meta; length(A))
+endof(a::AbstractArray) = (@_inline_meta; length(a))
 first(a::AbstractArray) = a[first(eachindex(a))]
 
 """