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Re: warning: Arc profiling: some edge counts were bad.
- To: nbecker at fred dot net
- Subject: Re: warning: Arc profiling: some edge counts were bad.
- From: Janis Johnson <janis187 at us dot ibm dot com>
- Date: Tue, 13 Nov 2001 11:09:56 -0800
- Cc: gcc at gcc dot gnu dot org
- References: <x88wv0ur075.fsf@adglinux1.hns.com>
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On Tue, Nov 13, 2001 at 01:32:30PM -0500, nbecker@fred.net wrote:
> What does this mean? Every (most?) times I compile with
> -fprofile-arcs and -fbranch-probabilities, I see this message:
>
> warning: Arc profiling: some edge
> counts were bad.
>
> Should I worry?
Yes, most likely. Make sure that you compile with the same set of
optimization and code generation options for both builds; otherwise
the arcs that were profiled don't match the arcs that use the
profile data.
Janis