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Re: Optimize numeric multiplication for one and two base-NBASE digit multiplicands. - Mailing list pgsql-hackers

From Joel Jacobson
Subject Re: Optimize numeric multiplication for one and two base-NBASE digit multiplicands.
Date
Msg-id f04e103f-e15b-41d2-9657-ee73eeaf349d@app.fastmail.com
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In response to Re: Optimize numeric multiplication for one and two base-NBASE digit multiplicands.  ("Joel Jacobson" <joel@compiler.org>)
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On Thu, Jul 4, 2024, at 09:38, Joel Jacobson wrote:
> Summary of benchmark results:
>
>          cpu          | var1ndigits |                           winner
> ----------------------+-------------+-------------------------------------------------------------
..
> v5-optimize-numeric-mul_var-small-var1-arbitrary-var2.patch
>  AMD Ryzen 9 7950X3D  |           3 | 
> v5-optimize-numeric-mul_var-small-var1-arbitrary-var2.patch
...
>  Apple M3 Max         |           3 | 
> v5-optimize-numeric-mul_var-small-var1-arbitrary-var2.patch
...
>  Intel Core i9-14900K |           3 | 
> v5-optimize-numeric-mul_var-small-var1-arbitrary-var2.patch

Since v5-add-mul_var_int.patch only implements (var1ndigits <= 2)
it can't possibly win the var1ndigits=3 competition.

/Joel

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