Add GPU broadcast support.

Author: N5N3

Project.toml

@@ -5,23 +5,26 @@ version = "0.6.11"
 [deps]
 Adapt = "79e6a3ab-5dfb-504d-930d-738a2a938a0e"
 DataAPI = "9a962f9c-6df0-11e9-0e5d-c546b8b5ee8a"
+GPUArraysCore = "46192b85-c4d5-4398-a991-12ede77f4527"
 StaticArrays = "90137ffa-7385-5640-81b9-e52037218182"
 Tables = "bd369af6-aec1-5ad0-b16a-f7cc5008161c"
 
 [compat]
 Adapt = "1, 2, 3"
 DataAPI = "1"
-StaticArrays = "1"
+GPUArraysCore = "= 0.1.2"
+StaticArrays = ">= 1.4.2"
 Tables = "1"
-julia = "1.3"
+julia = "1.6"
 
 [extras]
 Documenter = "e30172f5-a6a5-5a46-863b-614d45cd2de4"
+JLArrays = "27aeb0d3-9eb9-45fb-866b-73c2ecf80fcb"
 OffsetArrays = "6fe1bfb0-de20-5000-8ca7-80f57d26f881"
 PooledArrays = "2dfb63ee-cc39-5dd5-95bd-886bf059d720"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 TypedTables = "9d95f2ec-7b3d-5a63-8d20-e2491e220bb9"
 WeakRefStrings = "ea10d353-3f73-51f8-a26c-33c1cb351aa5"
 
 [targets]
-test = ["Test", "OffsetArrays", "PooledArrays", "TypedTables", "WeakRefStrings", "Documenter"]
+test = ["Test", "JLArrays", "OffsetArrays", "PooledArrays", "TypedTables", "WeakRefStrings", "Documenter"]

src/StructArrays.jl

@@ -29,4 +29,12 @@ end
 import Adapt
 Adapt.adapt_structure(to, s::StructArray) = replace_storage(x->Adapt.adapt(to, x), s)
 
+# for GPU broadcast
+import GPUArraysCore: backend
+function backend(::Type{T}) where {T<:StructArray}
+    backs = map(backend, fieldtypes(array_types(T)))
+    all(Base.Fix2(===, backs[1]), tail(backs)) || error("backend mismatch!")
+    return backs[1]
+end
+
 end # module

test/runtests.jl

@@ -6,6 +6,7 @@ import Tables, PooledArrays, WeakRefStrings
 using TypedTables: Table
 using DataAPI: refarray, refvalue
 using Adapt: adapt, Adapt
+using JLArrays
 using Test
 
 using Documenter: doctest
@@ -1178,6 +1179,16 @@ Base.BroadcastStyle(::Broadcast.ArrayStyle{MyArray2}, S::Broadcast.DefaultArrayS
         @test (@inferred bclog(s)) isa typeof(s)
         test_allocated(bclog, s)
     end
+
+    @testset "StructJLArray" begin
+        bcabs(a) = abs.(a)
+        bcmul2(a) = 2 .* a
+        a = StructArray(randn(ComplexF32, 10, 10))
+        sa = jl(a)
+        @test collect(@inferred(bcabs(sa))) == bcabs(a)
+        @test @inferred(bcmul2(sa)) isa StructArray
+        @test (sa .+= 1) isa StructArray
+    end
 end
 
 @testset "map" begin