anne:vlc-win-32 nkoriyama$ gcc -v
Using built-in specs.
Target: i686-apple-darwin11
Configured with: /private/var/tmp/llvmgcc42/llvmgcc42-2336.1~22/src/configure --disable-checking --enable-werror --prefix=/Developer/usr/llvm-gcc-4.2 --mandir=/share/man --enable-languages=c,objc,c++,obj-c++ --program-prefix=llvm- --program-transform-name=/^[cg][^.-]*$/s/$/-4.2/ --with-slibdir=/usr/lib --build=i686-apple-darwin11 --enable-llvm=/private/var/tmp/llvmgcc42/llvmgcc42-2336.1~22/dst-llvmCore/Developer/usr/local --program-prefix=i686-apple-darwin11- --host=x86_64-apple-darwin11 --target=i686-apple-darwin11 --with-gxx-include-dir=/usr/include/c++/4.2.1
Thread model: posix
gcc version 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.1.00)


anne:vlc-win-32 nkoriyama$ ~/mingw/mingw/bin/i686-pc-mingw32-gcc -v
Using built-in specs.
COLLECT_GCC=/Users/nkoriyama/mingw/mingw/bin/i686-pc-mingw32-gcc
COLLECT_LTO_WRAPPER=/Users/nkoriyama/mingw/mingw/libexec/gcc/i686-pc-mingw32/4.7.0/lto-wrapper
Target: i686-pc-mingw32
Configured with: ../../../gcc/trunk/configure --target=i686-pc-mingw32 --disable-multilib --with-sysroot=/Users/nkoriyama/mingw/mingw --prefix=/Users/nkoriyama/mingw/mingw --enable-cloog-backend=isl --enable-languages=c,c++ --enable-fully-dynamic-string --disable-win32-registry --disable-nls
Thread model: win32
gcc version 4.7.0 20111205 (experimental) (GCC)


anne:vlc-win-32 nkoriyama$ cat test.c
int main()
{
    asm volatile( "" ::: "mm0", "xmm0");
}


anne:vlc-win-32 nkoriyama$ gcc test.c
anne:vlc-win-32 nkoriyama$


anne:vlc-win-32 nkoriyama$ ~/mingw/mingw/bin/i686-pc-mingw32-gcc test.c
test.c: In function 'main':
test.c:3:5: error: unknown register name 'xmm0' in 'asm'
test.c:3:5: error: unknown register name 'mm0' in 'asm'
anne:vlc-win-32 nkoriyama$


anne:vlc-win-32 nkoriyama$ ~/mingw/mingw/bin/i686-pc-mingw32-gcc -mmmx test.c
test.c: In function 'main':
test.c:3:5: error: unknown register name 'xmm0' in 'asm'
anne:vlc-win-32 nkoriyama$


anne:vlc-win-32 nkoriyama$ ~/mingw/mingw/bin/i686-pc-mingw32-gcc -msse test.c
anne:vlc-win-32 nkoriyama$


anne:vlc-win-32 nkoriyama$ ~/mingw/mingw/bin/i686-pc-mingw32-gcc -mtune=core2 test.c
test.c: In function 'main':
test.c:3:5: error: unknown register name 'xmm0' in 'asm'
test.c:3:5: error: unknown register name 'mm0' in 'asm'
anne:vlc-win-32 nkoriyama$


anne:vlc-win-32 nkoriyama$ ~/mingw/mingw/bin/i686-pc-mingw32-gcc -march=core2 test.c
anne:vlc-win-32 nkoriyama$