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Fri Apr 16 19:36:52 EDT 2004 · https://mail.python.org/pipermail/python-dev/2004-April/044348.html

On Wed, 14 Apr 2004, Jeff Epler wrote:

> imul is on all x86 architectures, but whether to use it or not depends
> on the characteristics of the target CPU.  With -mcpu=i386, imul is
> considered quite slow and a shift sequence is (almost?) always preferred
> when one operand is constant.  With -mcpu=i686 and newer, imul seems to
> be preferred.

My misunderstanding. I hadn't really comprehended the full extent of
"instruction scheduling" in this context.

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[Python-Dev] String hash function multiplier