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Optimize to_rarray to avoid recursion for simple inputs #140

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Optimize to_rarray to avoid recursion for simple inputs #140

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4 changes: 4 additions & 0 deletions src/Tracing.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -445,3 +445,7 @@ end
@inline function to_rarray(@nospecialize(x))
return make_tracer(OrderedIdDict(), x, (), Reactant.ArrayToConcrete)
end

to_rarray(x::Number) = x # TODO: should this be a `ConcreteRArray{_,0}`?
to_rarray(x::ConcreteRArray) = x
to_rarray(x::AbstractArray{<:Number}) = ConcreteRArray(x)
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cc @avik-pal can we make a union type of all the primitive types that Reactant supports conversion into (e.g. int, float, complex float, etc). We should then use this instead of Number here

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union over https://mlir.llvm.org/docs/Dialects/Builtin/#types? (atleast the ones that are in base)

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These ones specificaily:

Reactant.jl/src/XLA.jl

Line 213 in 626cb72

@inline primitive_type(::Type{Bool}) = 1

We can then also amend

Reactant.jl/src/Tracing.jl

Line 383 in 626cb72

if mode == ArrayToConcrete && eltype(RT) <: AbstractFloat
to be is a subtype of Reactant.PrimitiveTypes

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Added in #161

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@gdalle I think we're just waiting for this to get addressed, then lgtm

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It's merged but we still shouldn't do to_rarray(x::Number) = x because the semantics won't work out

1 change: 1 addition & 0 deletions test/Project.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@ Enzyme = "7da242da-08ed-463a-9acd-ee780be4f1d9"
Flux = "587475ba-b771-5e3f-ad9e-33799f191a9c"
Functors = "d9f16b24-f501-4c13-a1f2-28368ffc5196"
InteractiveUtils = "b77e0a4c-d291-57a0-90e8-8db25a27a240"
JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
Lux = "b2108857-7c20-44ae-9111-449ecde12c47"
LuxLib = "82251201-b29d-42c6-8e01-566dec8acb11"
MLUtils = "f1d291b0-491e-4a28-83b9-f70985020b54"
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11 changes: 10 additions & 1 deletion test/tracing.jl
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
using Reactant
using Reactant: traced_type, ConcreteRArray, TracedRArray, ConcreteToTraced
using Reactant: to_rarray, traced_type, ConcreteRArray, TracedRArray, ConcreteToTraced
using Test
using JET: @test_opt

@testset "Tracing" begin
@testset "trace_type" begin
Expand Down Expand Up @@ -100,4 +101,12 @@ using Test
end
end
end
@testset "to_rarray" begin
@test to_rarray(1.0) isa Float64
@test to_rarray([1.0]) isa ConcreteRArray{Float64,1}
@test to_rarray(ConcreteRArray([1.0])) isa ConcreteRArray{Float64,1}
@test_opt to_rarray(1.0)
@test_opt to_rarray([1.0])
@test_opt to_rarray(ConcreteRArray([1.0]))
end
end
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