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[Bug target/44578] GCC generates MMX instructions but fails to generate "emms"
- From: "ubizjak at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 30 Apr 2013 06:07:17 +0000
- Subject: [Bug target/44578] GCC generates MMX instructions but fails to generate "emms"
- Auto-submitted: auto-generated
- References: <bug-44578-4 at http dot gcc dot gnu dot org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44578
Uros Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
--- Comment #14 from Uros Bizjak <ubizjak at gmail dot com> 2013-04-30 06:07:17 UTC ---
The original problem was fixed in 4.5.
The issue with global MMX registers (Comment #3) won't be fixed - it is user
error, please see Comment #5 for the explanation. Also, according to MMX ABI,
it is user responsibility to call _mm_empty at the end of MMX intrinsics
sequence to "empty the multimedia state".
The problem from Comment #7 is fixed in 4.7.4, 4.8.1 and 4.9.0.