[Bug target/18542] New: ICE: output_operand: invalid expression as operand

["corsepiu at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

The code snippet in the attachment (stripped down real-world code) causes an ICE
when compiling with -01 or greater. The ICE does not occur with -O0.

# m68k-rtems4.7-gcc -O1 -c -o startup_rel-cpuboot.o cpuboot.c
cpuboot.c: In function `boot_phase_1':
cpuboot.c:11: internal compiler error: output_operand: invalid expression as operand
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.

# m68k-rtems4.7-gcc --version
m68k-rtems4.7-gcc (GCC) 3.4.4 20041114 (prerelease)

-- 
           Summary: ICE: output_operand: invalid expression as operand
           Product: gcc
           Version: 3.4.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: corsepiu at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org,joel at oarcorp dot com
GCC target triplet: m68k-*-elf m68k-rtems*


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18542