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[Bug target/45483] gcc-4.4.3: probably wrong optimization options chosen by "-march=native"
- From: "pacho at condmat1 dot ciencias.uniovi.es" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 22 Sep 2011 20:47:04 +0000
- Subject: [Bug target/45483] gcc-4.4.3: probably wrong optimization options chosen by "-march=native"
- Auto-submitted: auto-generated
- References: <bug-45483-4@http.gcc.gnu.org/bugzilla/>
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)?