[Bug middle-end/24036] New: [e500] ICE in subreg_offset_representable_p, at rtlanal.c:3143

["rmansfield at qnx dot com" <gcc-bugzilla at gcc dot gnu dot org>]

ICE when using -mfloat-gprs=double with -mspe=no. Found in the e500 branch,
reproducible in mainline.

Test case:

typedef double _Complex _Dcomplex;

double (cabs)(_Dcomplex x) { }

[rmansfield@bender rmansfield]$
/home/rmansfield/crosstool/powerpc-linux-gnuspe/gcc-head-glibc-2.3.5/bin/powerpc-linux-gnuspe-gcc
-mfloat-gprs=double -mcpu=8548 ~/cabs.i -c -mspe=no -v

Using built-in specs.

Target: powerpc-linux-gnuspe

Configured with:
/home/rmansfield/crosstool-0.28-rc37/build/powerpc-linux-gnuspe/gcc-head-glibc-2.3.5/gcc-head/configure
--target=powerpc-linux-gnuspe --host=i686-host_pc-linux-gnu
--prefix=/home/rmansfield/crosstool/powerpc-linux-gnuspe/gcc-head-glibc-2.3.5
--with-local-prefix=/home/rmansfield/crosstool/powerpc-linux-gnuspe/gcc-head-glibc-2.3.5/powerpc-linux-gnuspe
--disable-multilib --with-newlib --without-headers --disable-nls
--enable-threads=no --enable-symvers=gnu --enable-__cxa_atexit
--enable-languages=c --disable-shared

Thread model: single

gcc version 4.1.0 20050917 (experimental)

 /home/rmansfield/crosstool/powerpc-linux-gnuspe/gcc-head-glibc-2.3.5/libexec/gcc/powerpc-linux-gnuspe/4.1.0/cc1
-fpreprocessed /home/rmansfield/cabs.i -quiet -dumpbase cabs.i
-mfloat-gprs=double -mcpu=8548 -mspe=no -auxbase cabs -version -o /tmp/ccNYZQDL.s

GNU C version 4.1.0 20050917 (experimental) (powerpc-linux-gnuspe)

        compiled by GNU C version 3.3.3 20040412 (Red Hat Linux 3.3.3-7).

GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096

Compiler executable checksum: 947d94ba0d127e0ee2614bdf9bacf926

/home/rmansfield/cabs.i: In function 'cabs':

/home/rmansfield/cabs.i:3: internal compiler error: in
subreg_offset_representable_p, at rtlanal.c:3143

Please submit a full bug report,

with preprocessed source if appropriate.

See <URL:http://gcc.gnu.org/bugs.html> for instructions.

> If this is reproducible in mainline, could you submit this bug in bugzilla and 
> assign it to me?

> Thanks
> Aldy

-- 
           Summary: [e500] ICE in subreg_offset_representable_p, at
                    rtlanal.c:3143
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: middle-end
        AssignedTo: aldyh at redhat dot com
        ReportedBy: rmansfield at qnx dot com
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-host_pc-linux-gnu
  GCC host triplet: i686-host_pc-linux-gnu
GCC target triplet: powerpc-linux-gnuspe


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24036