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From: "pacho at condmat1 dot ciencias.uniovi.es" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/45483] gcc-4.4.3: probably wrong optimization options chosen by "-march=native"
Date: Thu, 22 Sep 2011 20:49:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45483

--- Comment #8 from Pacho Ramos <pacho at condmat1 dot ciencias.uniovi.es> 2011-09-22 20:47:04 UTC ---
It's still using generic in gcc-4.5, -march has moved from prescott to
pentium-m:
gcc-4.4: \_ /usr/libexec/gcc/i686-pc-linux-gnu/4.4.5/cc1 -quiet -
-D_FORTIFY_SOURCE=2 -march=prescott --param l1-cache-size=32 --param
l1-cache-line-size=64 --param l2-cache-size=2048 -mtune=generic -quiet
-dumpbase - -auxbase-strip /dev/null -o /tmp/ccpMToQG.s


gcc-4.5.3: \_ /usr/libexec/gcc/i686-pc-linux-gnu/4.5.3/cc1 -quiet -
-D_FORTIFY_SOURCE=2 -march=pentium-m --param l1-cache-size=32 --param
l1-cache-line-size=64 --param l2-cache-size=2048 -mtune=generic -quiet
-dumpbase - -auxbase-strip /dev/null -o /tmp/cc11MaKg.s


Should I try with gcc-4.6 to see if it uses something different than "generic"
for mtune (or march has changed again)?