Mainline is ICE'ing on testsuite/gcc.c-torture/compile/sync-1.c for some arguments to -march. For example:
./xgcc -B. -O2 /mnt/sysfs/rask/cvssrc/gcc/gcc/testsuite/gcc.c-torture/compile/sync-1.c -S -o /tmp/sync-1.s -march=pentium /mnt/sysfs/rask/cvssrc/gcc/gcc/testsuite/gcc.c-torture/compile/sync-1.c: In function 'test_lock': /mnt/sysfs/rask/cvssrc/gcc/gcc/testsuite/gcc.c-torture/compile/sync-1.c:261: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <URL:http://gcc.gnu.org/bugs.html> for instructions. It works with: i386, i486, winchip-c6, winchip2 and c3. It fails with: pentium, pentium-mmx, pentiumpro, pentium2, pentium3, pentium4, nocona, prescott, k6, k6-2, k6-3, k8, athlon, opteron and c3-2. The gcc-4.1.0-3 compiler shipped by Red Hat fails in the same way for the same arguments to -march. -- Summary: syncronization primitives cause ICE with -march=pentium or better Product: gcc Version: 4.2.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: rask at sygehus dot dk GCC build triplet: i686-pc-linux-gnu GCC host triplet: i686-pc-linux-gnu GCC target triplet: i686-pc-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27266
