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[Bug target/37216] [cygming] Invalid alignment for SSE store to .comm data generated with -O3
- From: "nickc at redhat dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 6 Oct 2008 16:43:50 -0000
- Subject: [Bug target/37216] [cygming] Invalid alignment for SSE store to .comm data generated with -O3
- References: <bug-37216-16627@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #35 from nickc at redhat dot com 2008-10-06 16:43 -------
Subject: Re: [cygming] Invalid alignment for SSE store
to .comm data generated with -O3
Hi sherpya,
> ------- Comment #34 from sherpya at netfarm dot it 2008-10-06 14:13 -------
> $ nm ffmpeg_g.exe |grep ff_cos_16
> 00dd84e0 B _ff_cos_16
> 00de04c0 B _ff_cos_16384
>
> except snow and svq1 tests, crashing because of bugs in tree opts on win32
> sse code is working fine
As I suspected. The PE/COFF file format does not provide for specifying
the alignment of commons.
Hmm, I wonder if gcc should complain if it finds aligned commons with
COFF backends or if we should try to generate a GNU extension to the
COFF format.
Cheers
Nick
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37216