requires perf information

[giuliomoro]

If I build this patch

#N canvas 63 63 450 300 12;
#X obj 197 124 pow~;
#X obj 207 205 dac~;
#X obj 251 122 sqrt~;
#X connect 0 0 1 0;
#X connect 2 0 1 0;

I get

__sqrt~f requires perf information.
__pow~f requires perf information.

As part of a larger patch I have also seen

__cos~f requires perf information.

but I haven't been able to reproduce it by simply adding a [cos~] object.

Any idea what these are for?

[dromer]

This information comes from the spec object: 446b30a

It gives information about specific instruction performance, which is used to calculate a total performance of the patch or at least some kind of profiling. It prints a table when you compile with verbose/-v option.

These are just warnings though, but I think it's because the perf section is missing: https://github.com/Wasted-Audio/hvcc/blob/develop/hvcc/core/json/heavy.ir.json#L763