Re: other/6737: feature request: stack realignment attribute

Re: other/6737: feature request: stack realignment attribute

[Dara Hazeghi]

The following reply was made to PR other/6737; it has been noted by GNATS.

From: Dara Hazeghi <dhazeghi@yahoo.com>
To: gcc-gnats@gcc.gnu.org, wesslen@users.sourceforge.net
Cc:  
Subject: Re: other/6737: feature request: stack realignment attribute
Date: Sat, 10 May 2003 16:46:49 -0700

 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit- 
 trail&database=gcc&pr=6737
 
 Hello,
 
 gcc 3.1 is a bit old. Could you determine whether the problem of the  
 stack becoming unaligned is still present in a more current version of  
 gcc (ie 3.2.3)? Thanks,
 
 Dara
 

Re: other/6737: feature request: stack realignment attribute

[steven]

Synopsis: feature request: stack realignment attribute

State-Changed-From-To: open->feedback
State-Changed-By: steven
State-Changed-When: Mon May 12 10:53:46 2003
State-Changed-Why:
    Dara has asked for feedback

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6737

other/6737: feature request: stack realignment attribute

[wesslen]

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>Number:         6737
>Category:       other
>Synopsis:       feature request: stack realignment attribute
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          change-request
>Submitter-Id:   net
>Arrival-Date:   Mon May 20 06:26:01 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Daniel Wesslén
>Release:        3.1
>Organization:
>Environment:

>Description:
Since the stack may become unaligned by externally compiled code, I request a function attribute that emits code to realign the stack (same as for main()).

This is becoming increasingly important now, when simd support has been added to gcc.
Since main() already does this it shouldn't be a big issue (I may be wrong of cource).

Example:
void foo() __attribute__(realign)
{
   // ...
}
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: