Re: [Bug c++/58772] __attribute__((aligned(16))) and nested classes cause -ftree-vectorize to generate segfaulting code

[pinskia@gmail.com]

Sent from my iPad

> On Oct 21, 2013, at 2:35 AM, "burnus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> wrote:
> 
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58772
> 
> Tobias Burnus <burnus at gcc dot gnu.org> changed:
> 
>           What    |Removed                     |Added
> ----------------------------------------------------------------------------
>                 CC|                            |burnus at gcc dot gnu.org
> 
> --- Comment #5 from Tobias Burnus <burnus at gcc dot gnu.org> ---
> (In reply to Richard Biener from comment #3)
>> The syntax would be
>>  ::posix_memalign (&act, 16, sizeof (Actor));
> 
> Or
>  #include <mm_malloc.h>
>  ...
>  act = _mm_malloc, sizeof (Actor), 16);
> which is supposed to be a bit more portable. (mm_malloc.h ships with GCC since
> 4.0, if I recall correctly.)


Less portable as that only works on x86 while posix_memalign works on all posix targets.
>From gcc-bugs-return-432334-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Oct 21 09:50:11 2013
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From: "pinskia at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/58772] __attribute__((aligned(16))) and nested classes cause -ftree-vectorize to generate segfaulting code
Date: Mon, 21 Oct 2013 09:50:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?idX772

--- Comment #6 from pinskia at gmail dot com <pinskia at gmail dot com> ---
Sent from my iPad

> On Oct 21, 2013, at 2:35 AM, "burnus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> wrote:
>
> http://gcc.gnu.org/bugzilla/show_bug.cgi?idX772
>
> Tobias Burnus <burnus at gcc dot gnu.org> changed:
>
>           What    |Removed                     |Added
> ----------------------------------------------------------------------------
>                 CC|                            |burnus at gcc dot gnu.org
>
> --- Comment #5 from Tobias Burnus <burnus at gcc dot gnu.org> ---
> (In reply to Richard Biener from comment #3)
>> The syntax would be
>>  ::posix_memalign (&act, 16, sizeof (Actor));
>
> Or
>  #include <mm_malloc.h>
>  ...
>  act = _mm_malloc, sizeof (Actor), 16);
> which is supposed to be a bit more portable. (mm_malloc.h ships with GCC since
> 4.0, if I recall correctly.)


Less portable as that only works on x86 while posix_memalign works on all posix
targets.