[Bug middle-end/55381] New: [4.8 Regression]: build fails on cris-elf building libgfortran with host-gcc-4.4, ICE compiling matmul_i1.c

["hp at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55381

             Bug #: 55381
           Summary: [4.8 Regression]: build fails on cris-elf building
                    libgfortran with host-gcc-4.4, ICE compiling
                    matmul_i1.c
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Keywords: build, ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: hp@gcc.gnu.org
                CC: dnovillo@gcc.gnu.org
              Host: x86_64-unknown-linux-gnu
            Target: cris-axis-elf


Created attachment 28724
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28724
cc1 -fpreprocessed matmul_i1.i -melf -g -O2  -std=gnu99 -version
-fcx-fortran-rules -ffunction-sections -fdata-sections -ftree-vectorize
-funroll-loops -o matmul_i1.s

Revision r193595 caused the build for cris-elf to fail as follows, with
host-gcc gcc-4.4.3-4.fc12.x86_64 as well as gcc-4.4.4-10.fc12.x86_64:

libtool: compile:  /tmp/hpautotest-gcc0/cris-elf/gccobj/./gcc/xgcc
-B/tmp/hpautotest-gcc0/cris-elf/gccobj/./gcc/ -nostdinc
-B/tmp/hpautotest-gcc0/cris-elf/gccobj/cris-elf/newlib/ -isystem
/tmp/hpautotest-gcc0/cris-elf/gccobj/cris-elf/newlib/targ-include -isystem
/tmp/hpautotest-gcc0/gcc/newlib/libc/include
-B/tmp/hpautotest-gcc0/cris-elf/gccobj/cris-elf/libgloss/cris
-L/tmp/hpautotest-gcc0/cris-elf/gccobj/cris-elf/libgloss/libnosys
-L/tmp/hpautotest-gcc0/gcc/libgloss/cris
-B/tmp/hpautotest-gcc0/cris-elf/pre/cris-elf/bin/
-B/tmp/hpautotest-gcc0/cris-elf/pre/cris-elf/lib/ -isystem
/tmp/hpautotest-gcc0/cris-elf/pre/cris-elf/include -isystem
/tmp/hpautotest-gcc0/cris-elf/pre/cris-elf/sys-include -DHAVE_CONFIG_H -I.
-I/tmp/hpautotest-gcc0/gcc/libgfortran
-iquote/tmp/hpautotest-gcc0/gcc/libgfortran/io
-I/tmp/hpautotest-gcc0/gcc/libgfortran/../gcc
-I/tmp/hpautotest-gcc0/gcc/libgfortran/../gcc/config -I../.././gcc
-I/tmp/hpautotest-gcc0/gcc/libgfortran/../libgcc -I../libgcc -std=gnu99 -Wall
-Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wextra
-Wwrite-strings -fcx-fortran-rules -ffunction-sections -fdata-sections
-ftree-vectorize -funroll-loops -g -O2 -MT matmul_i1.lo -MD -MP -MF
.deps/matmul_i1.Tpo -c
/tmp/hpautotest-gcc0/gcc/libgfortran/generated/matmul_i1.c -o matmul_i1.o
/tmp/hpautotest-gcc0/gcc/libgfortran/generated/matmul_i1.c: In function
'matmul_i1':
/tmp/hpautotest-gcc0/gcc/libgfortran/generated/matmul_i1.c:79:1: internal
compiler error: Illegal instruction
 matmul_i1 (gfc_array_i1 * const restrict retarray, 
 ^
0x85fbc5 crash_signal
        /tmp/hpautotest-gcc0/gcc/gcc/toplev.c:334
0xb37574 analyze_overlapping_iterations
        /tmp/hpautotest-gcc0/gcc/gcc/tree-data-ref.c:2958
0xb381d1 subscript_dependence_tester_1
        /tmp/hpautotest-gcc0/gcc/gcc/tree-data-ref.c:3510
0xb383aa subscript_dependence_tester
        /tmp/hpautotest-gcc0/gcc/gcc/tree-data-ref.c:3561
0xb398b6 compute_affine_dependence(data_dependence_relation*, loop*)
        /tmp/hpautotest-gcc0/gcc/gcc/tree-data-ref.c:4190
0xb3a38f compute_all_dependences(vec<data_reference*, va_heap, vl_ptr>,
vec<data_dependence_relation*, va_heap, vl_ptr>*, vec<loop*, va_heap, vl_ptr>,
bool)
        /tmp/hpautotest-gcc0/gcc/gcc/tree-data-ref.c:4259
0xb3a908 compute_data_dependences_for_loop(loop*, bool, vec<loop*, va_heap,
vl_ptr>*, vec<data_reference*, va_heap, vl_ptr>*,
vec<data_dependence_relation*, va_heap, vl_ptr>*)
        /tmp/hpautotest-gcc0/gcc/gcc/tree-data-ref.c:4545
0xb5de2c vect_analyze_data_refs(_loop_vec_info*, _bb_vec_info*, int*)
        /tmp/hpautotest-gcc0/gcc/gcc/tree-vect-data-refs.c:2975
0x9fcf40 vect_analyze_loop_2
        /tmp/hpautotest-gcc0/gcc/gcc/tree-vect-loop.c:1598
0x9fcf40 vect_analyze_loop(loop*)
        /tmp/hpautotest-gcc0/gcc/gcc/tree-vect-loop.c:1774
0xa1425b vectorize_loops()
        /tmp/hpautotest-gcc0/gcc/gcc/tree-vectorizer.c:114
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[3]: *** [matmul_i1.lo] Error 1
make[3]: Leaving directory
`/tmp/hpautotest-gcc0/cris-elf/gccobj/cris-elf/libgfortran'

Committer of r193595 CC:ed.
Preprocessed matmul_i1.c attached.