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feat: specialize dispatches for faster concrete array generation #213

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Nov 1, 2024
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24 changes: 23 additions & 1 deletion src/Tracing.jl
Original file line number Diff line number Diff line change
Expand Up @@ -563,7 +563,29 @@ end

@inline function to_rarray(@nospecialize(x); track_numbers::Union{Bool,Tuple}=())
track_numbers isa Bool && (track_numbers = track_numbers ? (Number,) : ())
return to_rarray_internal(x, track_numbers)
end

@inline function to_rarray_internal(@nospecialize(x), track_numbers::Tuple)
return make_tracer(OrderedIdDict(), x, (), Reactant.ArrayToConcrete; track_numbers)
end

to_rarray(x::ReactantPrimitive) = ConcreteRArray(x)
function to_rarray_internal(@nospecialize(::TracedRArray), ::Tuple)
return error("Cannot convert TracedRArray to ConcreteRArray")
end
@inline to_rarray_internal(@nospecialize(x::ConcreteRArray), ::Tuple) = x
@inline function to_rarray_internal(
@nospecialize(x::AbstractArray{<:ReactantPrimitive}), ::Tuple
)
return ConcreteRArray(x)
end

@inline to_rarray_internal(@nospecialize(x::ConcreteRNumber), ::Tuple) = x
@inline function to_rarray_internal(
@nospecialize(x::ReactantPrimitive), track_numbers::Tuple
)
for T in track_numbers
typeof(x) <: T && return ConcreteRNumber(x)
end
return x
end
14 changes: 14 additions & 0 deletions test/tracing.jl
Original file line number Diff line number Diff line change
Expand Up @@ -100,4 +100,18 @@ using Test
end
end
end

@testset "specialized dispatches" begin
@test @inferred Union{Float64,ConcreteRArray{Float64}} Reactant.to_rarray(
1.0; track_numbers=(Number,)
) isa ConcreteRNumber
@test @inferred Reactant.to_rarray(1.0) isa Float64
@test @inferred Reactant.to_rarray(rand(3)) isa ConcreteRArray

x_ra = Reactant.to_rarray(rand(3))
@test @inferred Reactant.to_rarray(x_ra) isa ConcreteRArray

x_ra = Reactant.to_rarray(1.0; track_numbers=(Number,))
@test @inferred Reactant.to_rarray(x_ra) isa ConcreteRNumber
end
end
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