[Bug bootstrap/55391] New: [4.8 regression] ICE in adjust_address_1 at emit-rtl.c:2180 breaks bulding cross to sparc64-linux

["mikpe at it dot uu.se" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55391

             Bug #: 55391
           Summary: [4.8 regression] ICE in adjust_address_1 at
                    emit-rtl.c:2180 breaks bulding cross to sparc64-linux
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: mikpe@it.uu.se


Attempting to build gcc-4.8-20121118 as a cross from x86_64-linux to
sparc64-linux fails with:

libtool: compile:  /mnt/scratch/objdir/./gcc/g++ -B/mnt/scratch/objdir/./gcc/
-nostdinc++ -nostdinc++
-I/mnt/scratch/objdir/sparc64-unknown-linux/libstdc++-v3/include/sparc64-unknown-linux
-I/mnt/scratch/objdir/sparc64-unknown-linux/libstdc++-v3/include
-I/mnt/scratch/gcc-4.8-20121118/libstdc++-v3/libsupc++
-I/mnt/scratch/gcc-4.8-20121118/libstdc++-v3/include/backward
-I/mnt/scratch/gcc-4.8-20121118/libstdc++-v3/testsuite/util
-L/mnt/scratch/objdir/sparc64-unknown-linux/libstdc++-v3/src
-L/mnt/scratch/objdir/sparc64-unknown-linux/libstdc++-v3/src/.libs
-B/home/mikpe/pkgs/linux-x86_64/cross-sparc64/sparc64-unknown-linux/bin/
-B/home/mikpe/pkgs/linux-x86_64/cross-sparc64/sparc64-unknown-linux/lib/
-isystem
/home/mikpe/pkgs/linux-x86_64/cross-sparc64/sparc64-unknown-linux/include
-isystem
/home/mikpe/pkgs/linux-x86_64/cross-sparc64/sparc64-unknown-linux/sys-include
-DHAVE_CONFIG_H -I. -I/mnt/scratch/gcc-4.8-20121118/libitm
-I/mnt/scratch/gcc-4.8-20121118/libitm/config/linux/sparc
-I/mnt/scratch/gcc-4.8-20121118/libitm/config/linux
-I/mnt/scratch/gcc-4.8-20121118/libitm/config/sparc
-I/mnt/scratch/gcc-4.8-20121118/libitm/config/posix
-I/mnt/scratch/gcc-4.8-20121118/libitm/config/generic
-I/mnt/scratch/gcc-4.8-20121118/libitm -ftls-model=initial-exec -Wall -pthread
-Werror -std=gnu++0x -funwind-tables -fno-exceptions -fno-rtti -fabi-version=4
-g -O2 -D_GNU_SOURCE -MT method-serial.lo -MD -MP -MF .deps/method-serial.Tpo
-c /mnt/scratch/gcc-4.8-20121118/libitm/method-serial.cc -o method-serial.o
In file included from /mnt/scratch/gcc-4.8-20121118/libitm/libitm_i.h:87:0,
                 from /mnt/scratch/gcc-4.8-20121118/libitm/method-serial.cc:25:
/mnt/scratch/gcc-4.8-20121118/libitm/method-serial.cc: In member function
'virtual _ITM_TYPE_CE {anonymous}::serialirr_dispatch::ITM_RCE(const
_ITM_TYPE_CE*)':
/mnt/scratch/gcc-4.8-20121118/libitm/dispatch.h:37:41: internal compiler error:
in adjust_address_1, at emit-rtl.c:2180
     return load(ptr, abi_dispatch::LSMOD);                                  \
                                         ^
(long stack dump omitted)

Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
make[4]: *** [method-serial.lo] Error 1
make[4]: Leaving directory `/mnt/scratch/objdir/sparc64-unknown-linux/libitm'
make[3]: *** [all-recursive] Error 1
make[3]: Leaving directory `/mnt/scratch/objdir/sparc64-unknown-linux/libitm'
make[2]: *** [all] Error 2
make[2]: Leaving directory `/mnt/scratch/objdir/sparc64-unknown-linux/libitm'
make[1]: *** [all-target-libitm] Error 2
make[1]: Leaving directory `/mnt/scratch/objdir'
make: *** [all] Error 2

Found while checking to see if the native ICE reported in PR55388 could be
reproduced with a cross.  Disabling libitm allows the build to complete.  (I
also had to disable libsanitizer to work around a build error there.)

Starting a bisection...