More performance #201
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More performance #201
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```julia
julia> using SIMDPolynomials, BenchmarkTools
julia> x, y, z, t = [PackedMonomial{4,7}(i) for i in 0:3]; # PackedMonomial with maximum of 4 variables and 7 bits of exponents.
julia> p = x * y + 3 * (z * t)
x₀x₁ + 3x₂x₃
julia> q = (p + 1) * p
x₀²x₁² + 6x₀x₁x₂x₃ + 9x₂²x₃² + x₀x₁ + 3x₂x₃
julia> @Btime gcd($p, $q)
11.260 μs (354 allocations: 18.77 KiB)
x₀x₁ + 3x₂x₃
julia> begin
c1 = 10*(x * z + x)
c2 = 2*(x^2 + z)
c3 = 2*(2 - z )
c4 = 20*(x * z^2)
e1 = 0
e2 = 5
e3 = 7
e4 = 10
p = c1 * y^e1 + c2 * y^e2 + c3 * y^e3 + c4 * y^e4
q = prod(i->p + i, 0:3)
end;
julia> @Btime for i in 0:3
gcd($p + i, $q)
end
1.330 ms (35340 allocations: 2.12 MiB)
```
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