Re: gcno file doesn't include uncalled member functions?

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gcno file doesn't include uncalled member funct...
\ Michael Morrell (6 May 2008)
. \ John Love-Jensen (6 May 2008)
. . \ Michael Morrell (7 May 2008)
. . . \ John Love-Jensen (7 May 2008)

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Subject:	Re: gcno file doesn't include uncalled member functions?
Group:	Gcc-help
From:	John Love-Jensen
Date:	7 May 2008

Hi Michael,

> Can you elaborate on your comment about -O0 producing not-useful results?

That's in the context of performance profiling.

I have seen performance profiling that indicated that 90% of the programs
time was spent in a routine that in the optimized build was much less than
1% of the time.

That specific case is exemplary of non-optimized builds in general. Hence
performance profiling for the non-optimized build is not interesting, since
time spent fine-tuning (or re-architecting) the non-performant non-optimized
code is not a useful effort.

In the context of coverage profiling, -O0 should be fine. Perhaps even
preferred.

The rest of your message is a bit out of my knowledge, so hopefully someone
else addresses your other inquiries.

Sincerely,
--Eljay