[mercury-users] Strange performance anomaly; can anyone confirm?

[Chris King]

On Mon, Mar 28, 2011 at 12:52 AM, Peter Wang <novalazy at gmail.com> wrote:
> Below is the diff of the HLDS dumps (mmc -dall) at a certain stage.
> Without the conditional, the set.insert call is not being delayed til
> after the set.member check, as would be expected.
>
> The workaround is to write the construction at the end of the
> predicate instead of in the head.

A-ha!  I never thought of that; makes sense.  I was assuming bindings
in the head were by default ordered last.  Shows what happens when one
assumes... :)

Thanks!

- Chris
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