Re: [ft-devel] Cleaning up ttinterp

[Alexei Podtelezhnikov]

On Mon, Oct 13, 2014 at 7:04 PM, Behdad Esfahbod <address@hidden> wrote:
> I was checking it out today and noticed that there are two main loops: default
> big switch, and non-default function-dispatch array.

Both are likely implemented through jump tables with similar
performance. Whether the switch is faster is not obvious. What is more
readable is a matter of taste. I do not like that some of more
involved Ins_functions remained in your code as others did not. I wish
there were a bit more consistency there. For example, only one liners
are explicitly inlined so that the switch is not bloated.

One relevant discussion among many others on the topic:
http://stackoverflow.com/questions/5582261/performance-of-array-of-functions-over-if-and-switch-statements