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Re: problem with -ax option

From: Janis Johnson <janis187 at us dot ibm dot com>
To: Satyavathi Malladi <satya at ittc dot ku dot edu>
Cc: gcc-help at gcc dot gnu dot org, gcc at gcc dot gnu dot org
Date: Mon, 6 Jan 2003 15:22:33 -0800
Subject: Re: problem with -ax option
References: <Pine.LNX.4.33.0301042254120.4954-100000@basie.ittc.ku.edu> <Pine.LNX.4.33.0301061628200.2330-100000@basie.ittc.ku.edu>

On Mon, Jan 06, 2003 at 04:42:43PM -0600, Satyavathi Malladi wrote:
> 
> I have used the -ax option to profile a program. The program makes some
> library function calls. So, I recompiled the library with profiling turned
> on for the library functions. A particular library function is called 3
> times in my program. But the basic block, corresponding to the entry to
> that function, is entered only for the first two times and not entered the
>  3rd time. I ran the program several times and observed the same behavior.
> The basic block corresponding to the exit of the library  function is
> ,however, entered. Could anyone pls help me figure out what the problem could be.

Profiling with -ax was broken in GCC 3.0 and was removed in GCC 3.1.
Try using -ftest-coverage -fprofile-arcs.

Janis

Follow-Ups:
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References:
- -ax option
  - From: Satyavathi Malladi
- problem with -ax option
  - From: Satyavathi Malladi

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