gcc-4.5 -O2 -m32 misoptimizes sha256: $ ~/gcc/install/bin/gcc-4.5 sha256.c -L/home/edwin/gcc/install/lib/gcc/x86_64-unknown-linux-gnu/lib32 -O2 -m32 $ ./a.out sha256 test vector #1 failed sha256 test vector #2 failed sha256 test vector #3 failed Aborted
Without -m32 it works: $ ~/gcc/install/bin/gcc-4.5 sha256.c -L/home/edwin/gcc/install/lib/gcc/x86_64-unknown-linux-gnu/lib64 -O2 $ ./a.out $ And -m32 -O1 works too: $ ~/gcc/install/bin/gcc-4.5 sha256.c -L/home/edwin/gcc/install/lib/gcc/x86_64-unknown-linux-gnu/lib32 -O1 -m32 $ ./a.out $ gcc version: ~/gcc/install/bin/gcc-4.5 -v Using built-in specs. COLLECT_GCC=/home/edwin/gcc/install/bin/gcc-4.5 COLLECT_LTO_WRAPPER=/home/edwin/gcc/install/libexec/gcc/x86_64-unknown-linux-gnu/4.5.0/lto-wrapper Target: x86_64-unknown-linux-gnu Configured with: ../gcc-trunk/configure --enable-languages=c --enable-checking=release --enable-ssp --disable-libssp --disable-plugin --disable-libmudflap --with-system-zlib --enable-version-specific-runtime-libs --program-suffix=-4.5 --enable-linux-futex -without-system-libunwind --with-arch-32=i586 --with-tune=generic --with-mpfr=/opt/cfarm/mpfr-2.4.1 --with-gmp=/opt/cfarm/gmp-4.2.4 --with-libelf=/opt/cfarm/libelf-0.8.12 --with-mpc=/opt/cfarm/mpc-0.8 --disable-bootstrap : (reconfigured) ../gcc-trunk/configure --prefix=/home/edwin/gcc/install --enable-languages=c --enable-checking=release --enable-ssp --disable-libssp --disable-plugin --disable-libmudflap --with-system-zlib --enable-version-specific-runtime-libs --program-suffix=-4.5 --enable-linux-futex -without-system-libunwind --with-arch-32=i586 --with-tune=generic --with-mpfr=/opt/cfarm/mpfr-2.4.1 --with-gmp=/opt/cfarm/gmp-4.2.4 --with-libelf=/opt/cfarm/libelf-0.8.12 --with-mpc=/opt/cfarm/mpc-0.8 --disable-bootstrap Thread model: posix gcc version 4.5.0 20100307 (experimental) (GCC) Bug initially reported against openSUSE 11.3 factory's gcc-4.5, but I reproduced with upstream gcc-4.5 SVN r157262. See https://wwws.clamav.net/bugzilla/show_bug.cgi?id=1862 for the original report. -- Summary: gcc4.5 -m32 -O2: misoptimizes sha256! Product: gcc Version: 4.5.0 Status: UNCONFIRMED Severity: major Priority: P3 Component: tree-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: edwintorok at gmail dot com GCC build triplet: x86_64-unknown-linux-gnu GCC host triplet: x86_64-unknown-linux-gnu GCC target triplet: x86_64-unknown-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43280
