------- Comment #6 from jose dot r dot fonseca at gmail dot com 2007-08-07 14:18 ------- Created an attachment (id=14031) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=14031&action=view) Example code
This is the source-code for my example above. To get the assembly run as: gcc -S -DCASE=0 -O3 -msse2 -o sse2-union-0.s sse2-union.cpp gcc -S -DCASE=1 -O3 -msse2 -o sse2-union-1.s sse2-union.cpp gcc -S -DCASE=2 -O3 -msse2 -o sse2-union-2.s sse2-union.cpp gcc -S -DCASE=3 -O3 -msse2 -o sse2-union-3.s sse2-union.cpp This was run on (gcc -v): Using built-in specs. Target: i486-linux-gnu Configured with: ../src/configure -v --enable-languages=c,c++,fortran,objc,obj-c++,treelang --prefix=/usr --enable-shared --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --enable-nls --with-gxx-include-dir=/usr/include/c++/4.1.3 --program-suffix=-4.1 --enable-__cxa_atexit --enable-clocale=gnu --enable-libstdcxx-debug --enable-mpfr --enable-checking=release i486-linux-gnu Thread model: posix gcc version 4.1.3 20070718 (prerelease) (Debian 4.1.2-14) But I actually first discovered this in an unofficial build of gcc-4.2 for MinGW. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29881
