GCC 4.6.1 likes to rename my functions

GCC 4.6.1 likes to rename my functions

[Paulo J. Matos]

Hi all,

I have finally ported my backend to the latest 4.6.1 after years of 
trying to play catch with the latest release version.

I am now fixing some details.

A source file has a function called: lm_change_to_active which, when 
compiled with -Os is inlined.
When I compile it with -fno-inline-functions 
-fno-inline-small-functions, I get a label for the function in the final 
assembler which looks like: lm_change_to_active.isra?0?.constprop?1?

Seems to be that GCC is adding .isra?0? and later .constprop?1? to the 
name of the function as it goes. However, my assembler doesn't like the 
two dots and the '?' in the middle of the label name very much.

Have I forgotten to define a hook or how I can tell GCC how to create 
this name?

Cheers,

-- 
PMatos

Re: GCC 4.6.1 likes to rename my functions

[Richard Guenther]

On Wed, Jul 6, 2011 at 5:02 PM, Paulo J. Matos <pocmatos@gmail.com> wrote:
> Hi all,
>
> I have finally ported my backend to the latest 4.6.1 after years of trying
> to play catch with the latest release version.
>
> I am now fixing some details.
>
> A source file has a function called: lm_change_to_active which, when
> compiled with -Os is inlined.
> When I compile it with -fno-inline-functions -fno-inline-small-functions, I
> get a label for the function in the final assembler which looks like:
> lm_change_to_active.isra?0?.constprop?1?
>
> Seems to be that GCC is adding .isra?0? and later .constprop?1? to the name
> of the function as it goes. However, my assembler doesn't like the two dots
> and the '?' in the middle of the label name very much.
>
> Have I forgotten to define a hook or how I can tell GCC how to create this
> name?

See cgraph.c:clone_function_name, it uses the NO_DOT_IN_LABEL
and NO_DOLLAR_IN_LABEL target macros and ASM_FORMAT_PRIVATE_NAME.  I
don't see where a '?' should
enter this picture anywhere.

Richard.

> Cheers,
>
> --
> PMatos
>
>

Re: GCC 4.6.1 likes to rename my functions

[Jakub Jelinek]

On Wed, Jul 06, 2011 at 04:02:57PM +0100, Paulo J. Matos wrote:
> I have finally ported my backend to the latest 4.6.1 after years of
> trying to play catch with the latest release version.
> 
> I am now fixing some details.
> 
> A source file has a function called: lm_change_to_active which, when
> compiled with -Os is inlined.
> When I compile it with -fno-inline-functions
> -fno-inline-small-functions, I get a label for the function in the
> final assembler which looks like:
> lm_change_to_active.isra?0?.constprop?1?
> 
> Seems to be that GCC is adding .isra?0? and later .constprop?1? to
> the name of the function as it goes. However, my assembler doesn't
> like the two dots and the '?' in the middle of the label name very
> much.
> 
> Have I forgotten to define a hook or how I can tell GCC how to
> create this name?

Look at clone_function_name in cgraph.c.  If you assembler doesn't like
the dots in the function names, you want to define NO_DOT_IN_LABEL,
if it doesn't like dollars in names, you want to also define
NO_DOLLAR_IN_LABEL.  And, double check your ASM_FORMAT_PRIVATE_NAME
definition and ASM_PN_FORMAT.

	Jakub

Re: GCC 4.6.1 likes to rename my functions

[Paulo J. Matos]

On 06/07/11 16:08, Richard Guenther wrote:

>
> See cgraph.c:clone_function_name, it uses the NO_DOT_IN_LABEL
> and NO_DOLLAR_IN_LABEL target macros and ASM_FORMAT_PRIVATE_NAME.  I
> don't see where a '?' should
> enter this picture anywhere.
>

Thanks, exactly what I needed!

Thanks also to Jakub who replied 'in-sync' with you immediatelly after.

Why are NO_DOLLAR_IN LABEL and NO_DOT_IN_LABEL not listed in the "Output 
and Generation of Labels" instead of "Misc". The former sounds like it's 
a better fit to describe these macros.

-- 
PMatos