Re: Ada Shootout program for K-Nucleotide (patches)

[Ludovic Brenta <ludovic@ludovic-brenta.org>]

Olivier Scalbert wrote on comp.lang.ada:
> gnatmake -gnatNp -march=native -g -pg -f knucleotide.adb -o
> knucleotide.gnat_run
>
> After running it with the 25M file, I have:
> $ gprof ./knucleotide.gnat_run -b
> Flat profile:
>
> Each sample counts as 0.01 seconds.
>    %   cumulative   self              self     total
>   time   seconds   seconds    calls   s/call   s/call  name
> 100.00     19.30    19.30        1    19.30    19.30  _ada_knucleotide
>    0.00     19.30     0.00        1     0.00     0.00  adainit
[...]
> Why I do not see all the different functions and procedures ? Should I
> miss something ?

You enabled front-end inlining with -gnatN; GNAT turned the whole
program into one procedure. Even then, it should be possible to run
the program under valgrind's callgrind tool to get accurate, per-line
(indeed per-instruction) execution costs. I don't know whether gprof
has such granularity or not.

--
Ludovic Brenta.