[Bug target/49904] New: Internal error with multiplication and -msoft-float

["mikulas at artax dot karlin.mff.cuni.cz" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49904

           Summary: Internal error with multiplication and -msoft-float
           Product: gcc
           Version: 4.6.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: mikulas@artax.karlin.mff.cuni.cz
              Host: hppa-linux-gnu
            Target: hppa64-linux-gnu
             Build: hppa-linux-gnu


Gcc 4.6.1 compiled for hppa64 target will crash with unrecognizable insn when
this program is compiled with -msoft-float. If multiplication is replaced with
division, gcc crashes as well.

int mul(int x, int y)
{
        return x * y;
}

        .LEVEL 2.0w
mul.c: In function 'mul':
mul.c:4:1: error: unrecognizable insn:
(insn 13 12 14 3 (set (reg:DI 69 [ <retval>+-4 ])
        (reg:DI 75)) mul.c:3 -1
     (nil))
mul.c:4:1: internal compiler error: in extract_insn, at recog.c:2109
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

$ hppa64-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=hppa64-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/usr/local/gcc64/libexec/gcc/hppa64-linux-gnu/4.6.1/lto-wrapper
Target: hppa64-linux-gnu
Configured with: ../gcc-4.6.1/configure --prefix=/usr/local/gcc64
--enable-languages=c --disable-lto --disable-shared --disable-threads
--disable-libgomp --disable-libmudflap --disable-libssp --disable-libquadmath
--includedir=/usr/hppa64-linux-gnu/include
--with-as=/usr/local/bin/hppa64-linux-gnu-as
--with-ld=/usr/local/bin/hppa64-linux-gnu-ld --with-system-zlib --disable-nls
--without-included-gettext --build=hppa-linux-gnu --host=hppa-linux-gnu
--target=hppa64-linux-gnu
Thread model: single
gcc version 4.6.1 (GCC)