linalg: Support more inputs to tril! and triu!; printarray and getproperty of QR.

Author: evelyne-ringoot

lib/GPUArraysCore/src/GPUArraysCore.jl

@@ -7,7 +7,7 @@ using Adapt
 
 export AbstractGPUArray, AbstractGPUVector, AbstractGPUMatrix, AbstractGPUVecOrMat,
        WrappedGPUArray, AnyGPUArray, AbstractGPUArrayStyle,
-       AnyGPUArray, AnyGPUVector, AnyGPUMatrix
+       AnyGPUArray, AnyGPUVector, AnyGPUMatrix, AnyGPUVecOrMat
 
 """
     AbstractGPUArray{T, N} <: DenseArray{T, N}
@@ -27,6 +27,7 @@ const WrappedGPUArray{T,N} = WrappedArray{T,N,AbstractGPUArray,AbstractGPUArray{
 const AnyGPUArray{T,N} = Union{AbstractGPUArray{T,N}, WrappedGPUArray{T,N}}
 const AnyGPUVector{T} = AnyGPUArray{T, 1}
 const AnyGPUMatrix{T} = AnyGPUArray{T, 2}
+const AnyGPUVecOrMat{T} = Union{AnyGPUArray{T, 1}, AnyGPUArray{T, 2}}
 
 
 ## broadcasting

src/host/linalg.jl

@@ -170,7 +170,7 @@ for T in (UpperTriangular, LowerTriangular, UnitUpperTriangular, UnitLowerTriang
     @eval Base.copyto!(A::$T{T, <:AbstractGPUArray{T,N}}, B::$T{T, <:AbstractGPUArray{T,N}}) where {T,N} = $T(copyto!(parent(A), parent(B)))
 end
 
-function LinearAlgebra.tril!(A::AbstractGPUMatrix{T}, d::Integer = 0) where T
+function LinearAlgebra.tril!(A::AnyGPUMatrix{T}, d::Integer = 0) where T
   gpu_call(A, d; name="tril!") do ctx, _A, _d
     I = @cartesianidx _A
     i, j = Tuple(I)
@@ -182,7 +182,7 @@ function LinearAlgebra.tril!(A::AbstractGPUMatrix{T}, d::Integer = 0) where T
   return A
 end
 
-function LinearAlgebra.triu!(A::AbstractGPUMatrix{T}, d::Integer = 0) where T
+function LinearAlgebra.triu!(A::AnyGPUMatrix{T}, d::Integer = 0) where T
   gpu_call(A, d; name="triu!") do ctx, _A, _d
     I = @cartesianidx _A
     i, j = Tuple(I)
@@ -795,3 +795,21 @@ function Base.isone(x::AbstractGPUMatrix{T}) where {T}
 
     Array(y)[]
 end
+
+## QR
+
+import LinearAlgebra: QRPackedQ
+
+function LinearAlgebra.getproperty(F::QR{T,<:AnyGPUMatrix{T}}, d::Symbol) where {T}
+    m, n = size(F)
+    if d === :R
+        return triu!(view(getfield(F, :factors), 1:min(m,n), 1:n))
+    elseif d === :Q
+        return QRPackedQ(getfield(F, :factors), F.τ)
+    else
+        getfield(F, d)
+    end
+end
+
+Base.print_array(io::IO, Q::QRPackedQ{T,<:AnyGPUMatrix{T},<:AnyGPUMatrix{T}}) where {T} =
+    Base.print_array(io, collect(adapt(ToArray(), Q)))

test/testsuite/linalg.jl

@@ -378,3 +378,10 @@ end
         @test isrealfloattype(typeof(opnorm(AT(mat), p)))
     end
 end
+
+@testsuite "QR" (AT, eltypes)->begin
+    @testset "get property" for dims in [(3,5), (3,3), (5,3)],
+                                prop in [:Q, :R], T in eltypes
+        @test compare(x -> getproperty(qr(x), prop), AT, rand(T, dims))
+    end
+end