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explicitly SIMD muladd with duals #562

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Merged
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Nov 22, 2021
Merged

explicitly SIMD muladd with duals #562

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7 changes: 7 additions & 0 deletions src/ForwardDiff.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,13 @@ import SpecialFunctions
import LogExpFunctions
import CommonSubexpressions

const SIMDFloat = Union{Float64, Float32}
const SIMDInt = Union{
Int128, Int64, Int32, Int16, Int8,
UInt128, UInt64, UInt32, UInt16, UInt8,
}
const SIMDType = Union{SIMDFloat, SIMDInt}

include("prelude.jl")
include("partials.jl")
include("dual.jl")
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20 changes: 20 additions & 0 deletions src/dual.jl
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Expand Up @@ -541,6 +541,16 @@ end
# fma #
#-----#

@inline function calc_fma_xyz(x::Dual{T,V,N},
y::Dual{T,V,N},
z::Dual{T,V,N}) where {T, V<:SIMDFloat,N}
xv, yv, zv = value(x), value(y), value(z)
rv = fma(xv, yv, zv)
N == 0 && return Dual{T}(rv)
xp, yp, zp = Vec(partials(x).values), Vec(partials(y).values), Vec(partials(z).values)
parts = Tuple(fma(xv, yp, fma(yv, xp, zp)))
Dual{T}(rv, parts)
end
@generated function calc_fma_xyz(x::Dual{T,<:Any,N},
y::Dual{T,<:Any,N},
z::Dual{T,<:Any,N}) where {T,N}
Expand Down Expand Up @@ -583,6 +593,16 @@ end
# muladd #
#--------#

@inline function calc_muladd_xyz(x::Dual{T,V,N},
y::Dual{T,V,N},
z::Dual{T,V,N}) where {T, V<:SIMDType,N}
xv, yv, zv = value(x), value(y), value(z)
rv = muladd(xv, yv, zv)
N == 0 && return Dual{T}(rv)
xp, yp, zp = Vec(partials(x).values), Vec(partials(y).values), Vec(partials(z).values)
parts = Tuple(muladd(xv, yp, muladd(yv, xp, zp)))
Dual{T}(rv, parts)
end
@generated function calc_muladd_xyz(x::Dual{T,<:Any,N},
y::Dual{T,<:Any,N},
z::Dual{T,<:Any,N}) where {T,N}
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7 changes: 0 additions & 7 deletions src/partials.jl
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Expand Up @@ -205,13 +205,6 @@ end
return tupexpr(i -> :(rand(V)), N)
end


const SIMDFloat = Union{Float64, Float32}
const SIMDInt = Union{
Int128, Int64, Int32, Int16, Int8,
UInt128, UInt64, UInt32, UInt16, UInt8,
}
const SIMDType = Union{SIMDFloat, SIMDInt}
const NT{N,T} = NTuple{N,T}

# SIMD implementation
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