FusibleBroadcasts.jl

An experimental framework for fusing broadcast expressions across arbitrary language constructs. This package exports two macros:

• @lazy_dot: An analogue to @. that executes calls to Base.broadcasted but drops the final call to Base.materialize. This macro be used to split long broadcast expressions into meaningful sub-expressions without sacrificing performance.
• @fusible: An annotation that can be added to method definitions, allowing them to participate in the process of broadcast fusion. As long as the method body satisfies several syntactic constraints, this macro can generate an alternative method definition where all calls to Base.materialize! are replaced with calls to fused_materialize!, which stores the output of @lazy_dot so that it can later be evaluated in an optimally fused way. Note: This macro is still in an early stage of development. Use with caution.