Greg Stark <[email protected]> writes:
> I also wonder if this microbenchmark is actually ok because it's
> testing the same value over and over so any branch-prediction will
> shine unrealistically well.

Yeah, that is a good point --- and it would benefit the unrolled loop
more than the other versions.  We should probably revise the test
harness so it mixes the size requests a bit.  I'm not sure of a suitably
simple way to do that, though.

                        regards, tom lane

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