move backend to GPUArraysCore.jl

Project.toml

@@ -15,7 +15,7 @@ Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
 
 [compat]
 Adapt = "2.0, 3.0"
-GPUArraysCore = "= 0.1.1"
+GPUArraysCore = "= 0.1.2"
 LLVM = "3.9, 4"
 Reexport = "1"
 julia = "1.6"

lib/GPUArraysCore/Project.toml

@@ -1,7 +1,7 @@
 name = "GPUArraysCore"
 uuid = "46192b85-c4d5-4398-a991-12ede77f4527"
 authors = ["Tim Besard <[email protected]>"]
-version = "0.1.1"
+version = "0.1.2"
 
 [deps]
 Adapt = "79e6a3ab-5dfb-504d-930d-738a2a938a0e"

lib/GPUArraysCore/src/GPUArraysCore.jl

@@ -111,5 +111,13 @@ macro allowscalar(ex)
     end
 end
 
+"""
+    backend(T::Type)
+    backend(x)
+
+Gets the GPUArrays back-end responsible for managing arrays of type `T`.
+"""
+backend(::Type) = error("This object is not a GPU array") # COV_EXCL_LINE
+backend(x) = backend(typeof(x))
 
 end # module GPUArraysCore

src/device/execution.jl

@@ -6,14 +6,7 @@ abstract type AbstractGPUBackend end
 
 abstract type AbstractKernelContext end
 
-"""
-    backend(T::Type)
-    backend(x)
-
-Gets the GPUArrays back-end responsible for managing arrays of type `T`.
-"""
-backend(::Type) = error("This object is not a GPU array") # COV_EXCL_LINE
-backend(x) = backend(typeof(x))
+import GPUArraysCore: backend
 
 """
     gpu_call(kernel::Function, arg0, args...; kwargs...)