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[Bug c/47825] SSE bitwise operations on floats work -g, fail -O3
- From: "cck0011 at yahoo dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sun, 20 Feb 2011 18:22:51 +0000
- Subject: [Bug c/47825] SSE bitwise operations on floats work -g, fail -O3
- Auto-submitted: auto-generated
- References: <bug-47825-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47825
--- Comment #4 from cck0011 at yahoo dot com 2011-02-20 18:22:46 UTC ---
(In reply to comment #3)
> Probably the same on maskarray. You should also try to update GCC to
> 4.3.5.
Hi Richard,
added to maskarray as well: no change in results. Adding option
-fno-strict-aliasing fixes it as well. I'm confused: since _mm_store_ps
explicitly copies into floatarray why is aliasing an issue?
thanks!