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[Bug middle-end/31802] SSE2 performance is deteriorating when __m128 is placed in union
- From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 3 May 2007 20:44:04 -0000
- Subject: [Bug middle-end/31802] SSE2 performance is deteriorating when __m128 is placed in union
- References: <bug-31802-6649@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #1 from pinskia at gcc dot gnu dot org 2007-05-03 21:44 -------
This is because the union does not get the correct mode (it gets BLK or TImode)
so GCC stores the union to the stack all the time.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |pinskia at gcc dot gnu dot
| |org
Severity|normal |enhancement
Component|c++ |middle-end
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31802