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Performance regression in Normed -> Float conversions on Julia v1.3.0 #144

@kimikage

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@kimikage

I have confirmed that Julia v1.2.0 and v1.3.0 give almost similar results on Normed->Float conversions (#129, #138). However, I found the performance regression (~2x - 3x slower) on x84_64 machines in the following cases:

  • Vec4{N0f32} -> Vec4{Float32}
  • Vec4{N0f64} -> Vec4{Float32}
  • Vec4{N0f64} -> Vec4{Float64}

(cf. #129 (comment))

I'm not going to rush to investigate the cause or fix this problem. I submit this issue as a placeholder in case any useful information is found.

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