------- Comment #4 from wbrana at gmail dot com 2010-04-08 17:50 ------- I have got same code with -O2 and O3 on Gentoo
Using built-in specs. Target: x86_64-pc-linux-gnu Configured with: /mnt/md3/cache/portage/sys-devel/gcc-4.4.3/work/gcc-4.4.3/configure --prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/4.4.3 --includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.3/include --datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.4.3 --mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.4.3/man --infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.4.3/info --with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.3/include/g++-v4 --host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --disable-altivec --disable-fixed-point --with-ppl --with-cloog --disable-nls --with-system-zlib --disable-checking --disable-werror --enable-secureplt --enable-multilib --enable-libmudflap --disable-libssp --enable-libgomp --enable-cld --with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/4.4.3/python --enable-java-awt=gtk --enable-languages=c,c++,java,fortran --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu --with-arch=core2 --with-tune=core2 --with-bugurl=http://bugs.gentoo.org/ --with-pkgversion='Gentoo 4.4.3 p1.0' Thread model: posix gcc version 4.4.3 (Gentoo 4.4.3 p1.0) COLLECT_GCC_OPTIONS='-v' '-O3' '-march=core2' '-save-temps' '-fno-vect-cost-model' '-o' '4' /usr/libexec/gcc/x86_64-pc-linux-gnu/4.4.3/cc1 -E -quiet -v 4.c -D_FORTIFY_SOURCE=2 -march=core2 -fno-vect-cost-model -O3 -fpch-preprocess -o 4.i ignoring nonexistent directory "/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.3/../../../../x86_64-pc-linux-gnu/include" #include "..." search starts here: #include <...> search starts here: /usr/local/include /usr/lib/gcc/x86_64-pc-linux-gnu/4.4.3/include /usr/lib/gcc/x86_64-pc-linux-gnu/4.4.3/include-fixed /usr/include End of search list. COLLECT_GCC_OPTIONS='-v' '-O3' '-march=core2' '-save-temps' '-fno-vect-cost-model' '-o' '4' /usr/libexec/gcc/x86_64-pc-linux-gnu/4.4.3/cc1 -fpreprocessed 4.i -quiet -dumpbase 4.c -march=core2 -auxbase 4 -O3 -version -fno-vect-cost-model -o 4.s GNU C (Gentoo 4.4.3 p1.0) version 4.4.3 (x86_64-pc-linux-gnu) compiled by GNU C version 4.4.3, GMP version 4.3.2, MPFR version 2.4.2-p3. GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 Compiler executable checksum: 35a36241d2e1e2c51694dabe4a5786db COLLECT_GCC_OPTIONS='-v' '-O3' '-march=core2' '-save-temps' '-fno-vect-cost-model' '-o' '4' /usr/lib/gcc/x86_64-pc-linux-gnu/4.4.3/../../../../x86_64-pc-linux-gnu/bin/as -V -Qy -o 4.o 4.s GNU assembler version 2.20.1 (x86_64-pc-linux-gnu) using BFD version (GNU Binutils) 2.20.1.20100303 COMPILER_PATH=/usr/libexec/gcc/x86_64-pc-linux-gnu/4.4.3/:/usr/libexec/gcc/x86_64-pc-linux-gnu/4.4.3/:/usr/libexec/gcc/x86_64-pc-linux-gnu/:/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.3/:/usr/lib/gcc/x86_64-pc-linux-gnu/:/usr/libexec/gcc/x86_64-pc-linux-gnu/4.4.3/:/usr/libexec/gcc/x86_64-pc-linux-gnu/:/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.3/:/usr/lib/gcc/x86_64-pc-linux-gnu/:/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.3/../../../../x86_64-pc-linux-gnu/bin/ LIBRARY_PATH=/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.3/:/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.3/:/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.3/../../../../lib64/:/lib/../lib64/:/usr/lib/../lib64/:/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.3/../../../../x86_64-pc-linux-gnu/lib/:/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.3/../../../:/lib/:/usr/lib/ COLLECT_GCC_OPTIONS='-v' '-O3' '-march=core2' '-save-temps' '-fno-vect-cost-model' '-o' '4' /usr/libexec/gcc/x86_64-pc-linux-gnu/4.4.3/collect2 --eh-frame-hdr -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2 -o 4 /usr/lib/gcc/x86_64-pc-linux-gnu/4.4.3/../../../../lib64/crt1.o /usr/lib/gcc/x86_64-pc-linux-gnu/4.4.3/../../../../lib64/crti.o /usr/lib/gcc/x86_64-pc-linux-gnu/4.4.3/crtbegin.o -L/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.3 -L/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.3 -L/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.3/../../../../lib64 -L/lib/../lib64 -L/usr/lib/../lib64 -L/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.3/../../../../x86_64-pc-linux-gnu/lib -L/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.3/../../.. 4.o -lgcc --as-needed -lgcc_s --no-as-needed -lc -lgcc --as-needed -lgcc_s --no-as-needed /usr/lib/gcc/x86_64-pc-linux-gnu/4.4.3/crtend.o /usr/lib/gcc/x86_64-pc-linux-gnu/4.4.3/../../../../lib64/crtn.o -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43692
