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[Bug c++/14042] C++ abstraction penalty is high in simple Altivec cases
- From: "tjw at omnigroup dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 6 Feb 2004 07:50:02 -0000
- Subject: [Bug c++/14042] C++ abstraction penalty is high in simple Altivec cases
- References: <20040206074537.14042.tjw@omnigroup.com>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From tjw at omnigroup dot com 2004-02-06 07:49 -------
I forgot to mention that the compile line was:
$PREFIX/bin/g++ -mdynamic-no-pic -fno-exceptions -O3 -maltivec -fstrict-aliasing obj.cpp -S
-o obj-34.s
Also, I did try this with scalar instead of vector values and the extraneous load/stores are NOT
present, so this does look to be related to Altivec somehow.
--
What |Removed |Added
----------------------------------------------------------------------------
Summary|C++ abstraction penalty is |C++ abstraction penalty is
|high in simple cases |high in simple Altivec cases
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14042