On Tue, Feb 27, 2007 at 12:30:16PM +0800, Zuxy Meng wrote: > Hi, > > -march=native choose pentium4 instead of pentium-m for Pentium M processors > (see config/i386/driver-i386.c)? Is this intentional or a typo? >
It is because Pentium M implements Pentium instructions. You should get: bash-3.00$ /usr/gcc-4.3/bin/gcc -march=native x.i -S -v ... /usr/gcc-4.3/libexec/gcc/i686-pc-linux-gnu/4.3.0/cc1 -fpreprocessed x.i -march=pentium4 -mtune=generic -quiet -dumpbase x.i -auxbase x -version -o x.s H.J.
