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KristofferCKristofferC
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Merge pull request #569 from JuliaDiff/kc/revert_simd
Revert SIMD.jl usage
2 parents 01a056d + 7dbd072 commit 43ef860

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6 files changed

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-55
lines changed

6 files changed

+23
-55
lines changed

‎.github/workflows/ci.yml

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@@ -16,6 +16,7 @@ jobs:
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fail-fast: false
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matrix:
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version:
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- '1.0'
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- '1'
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- 'nightly'
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os:

‎Project.toml

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@@ -12,7 +12,6 @@ NaNMath = "77ba4419-2d1f-58cd-9bb1-8ffee604a2e3"
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Preferences = "21216c6a-2e73-6563-6e65-726566657250"
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Printf = "de0858da-6303-5e67-8744-51eddeeeb8d7"
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Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
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SIMD = "fdea26ae-647d-5447-a871-4b548cad5224"
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SpecialFunctions = "276daf66-3868-5448-9aa4-cd146d93841b"
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StaticArrays = "90137ffa-7385-5640-81b9-e52037218182"
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@@ -25,10 +24,9 @@ DiffTests = "0.0.1, 0.1"
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LogExpFunctions = "0.3"
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NaNMath = "0.2.2, 0.3"
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Preferences = "1"
28-
SIMD = "3"
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SpecialFunctions = "0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 0.10, 1.0"
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StaticArrays = "0.8.3, 0.9, 0.10, 0.11, 0.12, 1.0"
31-
julia = "1.6"
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julia = "1"
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[extras]
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Calculus = "49dc2e85-a5d0-5ad3-a950-438e2897f1b9"

‎src/ForwardDiff.jl

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@@ -8,21 +8,13 @@ if VERSION >= v"1.6"
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end
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using Random
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using LinearAlgebra
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import SIMD: Vec
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import Printf
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import NaNMath
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import SpecialFunctions
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import LogExpFunctions
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import CommonSubexpressions
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19-
const SIMDFloat = Union{Float64, Float32}
20-
const SIMDInt = Union{
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Int128, Int64, Int32, Int16, Int8,
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UInt128, UInt64, UInt32, UInt16, UInt8,
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}
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const SIMDType = Union{SIMDFloat, SIMDInt}
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include("prelude.jl")
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include("partials.jl")
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include("dual.jl")

‎src/dual.jl

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@@ -541,16 +541,6 @@ end
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# fma #
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#-----#
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544-
@inline function calc_fma_xyz(x::Dual{T,V,N},
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y::Dual{T,V,N},
546-
z::Dual{T,V,N}) where {T, V<:SIMDFloat,N}
547-
xv, yv, zv = value(x), value(y), value(z)
548-
rv = fma(xv, yv, zv)
549-
N == 0 && return Dual{T}(rv)
550-
xp, yp, zp = Vec(partials(x).values), Vec(partials(y).values), Vec(partials(z).values)
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parts = Tuple(fma(xv, yp, fma(yv, xp, zp)))
552-
Dual{T}(rv, parts)
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end
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@generated function calc_fma_xyz(x::Dual{T,<:Any,N},
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y::Dual{T,<:Any,N},
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z::Dual{T,<:Any,N}) where {T,N}
@@ -593,16 +583,6 @@ end
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# muladd #
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#--------#
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596-
@inline function calc_muladd_xyz(x::Dual{T,V,N},
597-
y::Dual{T,V,N},
598-
z::Dual{T,V,N}) where {T, V<:SIMDType,N}
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xv, yv, zv = value(x), value(y), value(z)
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rv = muladd(xv, yv, zv)
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N == 0 && return Dual{T}(rv)
602-
xp, yp, zp = Vec(partials(x).values), Vec(partials(y).values), Vec(partials(z).values)
603-
parts = Tuple(muladd(xv, yp, muladd(yv, xp, zp)))
604-
Dual{T}(rv, parts)
605-
end
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@generated function calc_muladd_xyz(x::Dual{T,<:Any,N},
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y::Dual{T,<:Any,N},
608588
z::Dual{T,<:Any,N}) where {T,N}

‎src/partials.jl

Lines changed: 20 additions & 23 deletions
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@@ -141,13 +141,6 @@ end
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@inline _mul_partials(a::Partials{0,A}, b::Partials{N,B}, afactor, bfactor) where {N,A,B} = bfactor * b
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@inline _mul_partials(a::Partials{N,A}, b::Partials{0,B}, afactor, bfactor) where {N,A,B} = afactor * a
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144-
const SIMDFloat = Union{Float64, Float32}
145-
const SIMDInt = Union{
146-
Int128, Int64, Int32, Int16, Int8,
147-
UInt128, UInt64, UInt32, UInt16, UInt8,
148-
}
149-
const SIMDType = Union{SIMDFloat, SIMDInt}
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##################################
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# Generated Functions on NTuples #
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##################################
@@ -171,7 +164,6 @@ end
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@inline rand_tuple(::AbstractRNG, ::Type{Tuple{}}) = tuple()
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@inline rand_tuple(::Type{Tuple{}}) = tuple()
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174-
iszero_tuple(tup::NTuple{N,V}) where {N, V<:SIMDType} = sum(Vec(tup) != zero(V)) == 0
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@generated function iszero_tuple(tup::NTuple{N,V}) where {N,V}
176168
ex = Expr(:&&, [:(z == tup[$i]) for i=1:N]...)
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return quote
@@ -205,24 +197,29 @@ end
205197
return tupexpr(i -> :(rand(V)), N)
206198
end
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208-
const NT{N,T} = NTuple{N,T}
200+
@generated function scale_tuple(tup::NTuple{N}, x) where N
201+
return tupexpr(i -> :(tup[$i] * x), N)
202+
end
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210-
# SIMD implementation
211-
@inline add_tuples(a::NT{N,T}, b::NT{N,T}) where {N, T<:SIMDType} = Tuple(Vec(a) + Vec(b))
212-
@inline sub_tuples(a::NT{N,T}, b::NT{N,T}) where {N, T<:SIMDType} = Tuple(Vec(a) - Vec(b))
213-
@inline scale_tuple(tup::NT{N,T}, x::T) where {N, T<:SIMDType} = Tuple(Vec(tup) * x)
214-
@inline div_tuple_by_scalar(tup::NT{N,T}, x::T) where {N, T<:SIMDFloat} = Tuple(Vec(tup) / x)
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@inline minus_tuple(tup::NT{N,T}) where {N, T<:SIMDType} = Tuple(-Vec(tup))
216-
@inline mul_tuples(a::NT{N,T}, b::NT{N,T}, af::T, bf::T) where {N, T<:SIMDType} = Tuple(muladd(af, Vec(a), bf * Vec(b)))
204+
@generated function div_tuple_by_scalar(tup::NTuple{N}, x) where N
205+
return tupexpr(i -> :(tup[$i] / x), N)
206+
end
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208+
@generated function add_tuples(a::NTuple{N}, b::NTuple{N}) where N
209+
return tupexpr(i -> :(a[$i] + b[$i]), N)
210+
end
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219-
# Fallback implementations
220-
@generated add_tuples(a::NT{N}, b::NT{N}) where N = tupexpr(i -> :(a[$i] + b[$i]), N)
221-
@generated sub_tuples(a::NT{N}, b::NT{N}) where N = tupexpr(i -> :(a[$i] - b[$i]), N)
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@generated scale_tuple(tup::NT{N}, x) where N = tupexpr(i -> :(tup[$i] * x), N)
223-
@generated div_tuple_by_scalar(tup::NT{N}, x) where N = tupexpr(i -> :(tup[$i] / x), N)
224-
@generated minus_tuple(tup::NT{N}) where N = tupexpr(i -> :(-tup[$i]), N)
225-
@generated mul_tuples(a::NT{N}, b::NT{N}, af, bf) where N = tupexpr(i -> :(muladd(af, a[$i], bf * b[$i])), N)
212+
@generated function sub_tuples(a::NTuple{N}, b::NTuple{N}) where N
213+
return tupexpr(i -> :(a[$i] - b[$i]), N)
214+
end
215+
216+
@generated function minus_tuple(tup::NTuple{N}) where N
217+
return tupexpr(i -> :(-tup[$i]), N)
218+
end
219+
220+
@generated function mul_tuples(a::NTuple{N}, b::NTuple{N}, afactor, bfactor) where N
221+
return tupexpr(i -> :((afactor * a[$i]) + (bfactor * b[$i])), N)
222+
end
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###################
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# Pretty Printing #

‎test/PartialsTest.jl

Lines changed: 1 addition & 1 deletion
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@@ -114,7 +114,7 @@ for N in (0, 3), T in (Int, Float32, Float64)
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115115
if N > 0
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@test ForwardDiff._div_partials(PARTIALS, PARTIALS2, X, Y) == ForwardDiff._mul_partials(PARTIALS, PARTIALS2, inv(Y), -X/(Y^2))
117-
@test all(isapprox.(ForwardDiff._mul_partials(PARTIALS, PARTIALS2, X, Y).values, map((a, b) -> (X * a) + (Y * b), VALUES, VALUES2)))
117+
@test ForwardDiff._mul_partials(PARTIALS, PARTIALS2, X, Y).values == map((a, b) -> (X * a) + (Y * b), VALUES, VALUES2)
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@test ForwardDiff._mul_partials(ZERO_PARTIALS, PARTIALS, X, Y) == Y * PARTIALS
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@test ForwardDiff._mul_partials(PARTIALS, ZERO_PARTIALS, X, Y) == X * PARTIALS
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