Correct way to use debugging flags

Correct way to use debugging flags

[weili747]

Hi all:


I am trying to use "-dv" flag in the GCC. For each of the other
indicated dump files (either with -d or -fdump-rtl-pass), it dumps a
representation of the control flow graph suitable for viewing with VCG
to file.pass.vcg.  How to use it correctly? I apologizes it its a very
simple question. currently, I am trying in the following way:


gcc -g -dv test.c



Thanks


--
Regards,

Wei Li
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Re: Correct way to use debugging flags

[Ian Lance Taylor]

weili747 <weili747@gmail.com> writes:

> I am trying to use "-dv" flag in the GCC. For each of the other
> indicated dump files (either with -d or -fdump-rtl-pass), it dumps a
> representation of the control flow graph suitable for viewing with VCG
> to file.pass.vcg.  How to use it correctly? I apologizes it its a very
> simple question. currently, I am trying in the following way:
>
>
> gcc -g -dv test.c

You have to use it in conjunction with some other -d option.  E.g.,
    gcc -g -c -dv -da test.c

That will give you a bunch of test.c.*.*.vcg files.

Ian