Re: [PATCH 06/13] reftable: (de)serialization for the polymorphic record type.

Jeff King [off-list ref] writes:

Then I did the same, but building with -DNO_UNALIGNED_LOADS. The latter
actually ran faster, by a small margin. Here are the hyperfine results:

  [stock]
  Time (mean ± σ):      6.638 s ±  0.081 s    [User: 6.269 s, System: 0.368 s]
  Range (min … max):    6.550 s …  6.841 s    10 runs

  [-DNO_UNALIGNED_LOADS]
  Time (mean ± σ):      6.418 s ±  0.015 s    [User: 6.058 s, System: 0.360 s]
  Range (min … max):    6.394 s …  6.447 s    10 runs

For casual use as in reftables I doubt the difference is even
measurable. But this result implies that perhaps we ought to just be
using the fallback version all the time.

I like that one.  One less configurable knob that makes us execute
different codepaths is one less thing to be worried about.