[Bug target/19133] march=athlon can produce slower code than march=i686

2005-05-07 Thread ornati at fastwebnet dot it
--- Additional Comments From ornati at fastwebnet dot it 2005-05-07 14:04 --- ok -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19133

[Bug target/19133] march=athlon can produce slower code than march=i686

2005-05-07 Thread steven at gcc dot gnu dot org
--- Additional Comments From steven at gcc dot gnu dot org 2005-05-07 13:54 --- Looks like random instruction selection weirdness. Not much can be done about this. -- What|Removed |Added --

[Bug target/19133] march=athlon can produce slower code than march=i686

2005-02-08 Thread ornati at fastwebnet dot it
--- Additional Comments From ornati at fastwebnet dot it 2005-02-08 16:13 --- gcc -v Using built-in specs. Configured with: /var/tmp/portage/gcc-4.0.0_alpha20050130/work/gcc-4.0-20050130/configure --enable-version-specific-runtime-libs --prefix=/usr --bindir=/usr/i686-pc-linux-gnu/gcc-b

[Bug target/19133] march=athlon can produce slower code than march=i686

2005-02-08 Thread steven at gcc dot gnu dot org
--- Additional Comments From steven at gcc dot gnu dot org 2005-02-08 10:09 --- -march=athlon should optimize for the K7 yes. What you probably run into is a simple backend problem where the code generated for the K7 can, for whatever reason, not be optimized as well as the i686 code.

[Bug target/19133] march=athlon can produce slower code than march=i686

2004-12-22 Thread pinskia at gcc dot gnu dot org
-- What|Removed |Added Component|c |target Keywords||missed-optimization http://gcc.gnu.org/bugzilla/show_b