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Re: Documenting GCC 4.2 changes

On Dec 14, 2006, at 11:08 AM, Martin Michlmayr wrote:

A few months ago I looked through the ChangeLog to identify changes to
command line options in GCC 4.2 that were not yet documented at and I found several, including
changes made by you.  I posted to the gcc list but since there was no
response, I thought I'd personally mail you.  Can you please grep for
your name and check whether it makes sense to submit an update for

Thanks, and apologies in case this has been done already in the meantime.

* Martin Michlmayr <> [2006-08-23 23:15]:
I went through the ChangeLog (2006 only so far) to identify command
line options that should be documented in the GCC 4.2 changes page at

It would be nice if people listed below could submit patches for the
command line options they added/removed during the GCC 4.2 cycle. I'm
not sure how important it is to document options mostly aimed at GCC
developers, but it would be great if at least changes to common user
options could be documented.


2006-07-17  J"orn Rennecke  <>
(-fdump-noaddr): Document.

2006-05-12  Stuart Hastings  <>
-mstackrealign [i386]

---------------------------------------------------------------------------------------------------------- --- changes.html 2006-12-14 11:40:21.000000000 -0800 +++ 42changes.html 2006-12-14 11:46:14.000000000 -0800 @@ -176,6 +176,14 @@ GCC 4.2 Release Series<br />Changes, New <li>Added support for the Broadcom SB-1A core.</li> </ul>

+<h3>Intel x86</h3>
+ <ul>
+ <li>Added -fstackrealign and __attribute__ ((force_align_arg_pointer))
+ to realign the stack at runtime; this allows functions compiled
+ with a vector-aligned stack to be invoked from legacy objects
+ that keep only word-alignment.</li>
+ </ul>
<h2><a name="obsolete_systems">Obsolete Systems</a></h2>

 <h2>Documentation improvements</h2>

2006-12-14 Stuart Hastings <>

* changes.html (-fstackrealign, force_align_arg_pointer): Document.

Assuming this is approved, I'm don't know where to commit it. Clues gratefully accepted.

stuart hastings
Apple Computer

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