[Bug c/27266] New: syncronization primitives cause ICE with -march=pentium or better

["rask at sygehus dot dk" <gcc-bugzilla@gcc.gnu.org>]

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