[Bug bootstrap/52644] New: RTL check: expected elt 1 type 'i' or 'n', have '0' (rtx reg) in ix86_decompose_address, at config/i386/i386.c:11522[4.8 Regression] ICE in stage2:

["zsojka at seznam dot cz" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52644

             Bug #: 52644
           Summary: RTL check: expected elt 1 type 'i' or 'n', have '0'
                    (rtx reg) in ix86_decompose_address, at
                    config/i386/i386.c:11522[4.8 Regression] ICE in
                    stage2:
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zsojka@seznam.cz


This ICE happens probably only with RTL checking enabled.

Compiler output:
/mnt/svn/gcc-trunk/libgcc/unwind-dw2.c: In function 'execute_stack_op':
/mnt/svn/gcc-trunk/libgcc/unwind-dw2.c:902:1: internal compiler error: RTL
check: expected elt 1 type 'i' or 'n', have '0' (rtx reg) in
ix86_decompose_address, at config/i386/i386.c:11522
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
make[5]: *** [unwind-dw2.o] Error 1
make[5]: *** Waiting for unfinished jobs....
/mnt/svn/gcc-trunk/libgcc/unwind-dw2-fde-dip.c: In function
'_Unwind_IteratePhdrCallback':
/mnt/svn/gcc-trunk/libgcc/unwind-dw2-fde-dip.c:432:1: internal compiler error:
RTL check: expected elt 1 type 'i' or 'n', have '0' (rtx mem) in
ix86_decompose_address, at config/i386/i386.c:11522
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

$ ./build-185559-lto-fortran-checking-yes-rtl-df/gcc/xgcc -v
Using built-in specs.
COLLECT_GCC=./build-185559-lto-fortran-checking-yes-rtl-df/gcc/xgcc
Target: x86_64-unknown-linux-gnu
Configured with: /mnt/svn/gcc-trunk//configure --enable-checking=yes,rtl,df
--enable-languages=c,c++,lto,fortran
--prefix=/mnt/svn/gcc-trunk/binary-185559-lto-fortran-checking-yes-rtl-df/
--with-cloog --with-ppl --with-cloog-include=/usr/include/cloog-ppl/
--disable-ppl-version-check
Thread model: posix
gcc version 4.8.0 20120320 (experimental) (GCC) 

Tested revisions:
r185535 - OK
r185545 - crash
r185559 - crash