[Bug bootstrap/28326] New: [4.1/ICE] gcc-4.1.0 won't compile on power3

["markus at unixforces dot net" <gcc-bugzilla at gcc dot gnu dot org>]

If I try to bootstrap on ppc64 and try to use BOOT_CFLAGS="-m64 -O2
-pipe -mtune=power3 -mcpu=power3" I get an ICE. If I leave out "-mtune=power3
-mcpu=power3" the bootstrap finishes. So one of the optimizations is causing
this.

here are the steps I followed some while ago. see
http://bugs.gentoo.org/show_bug.cgi?id=126960 (gcc 4.1.1 has the same result)

$ mkdir gcc-4.1.0-temp
$ cd gcc-4.1.0-temp/
$ tar xfj /usr/portage/distfiles/gcc-4.1.0.tar.bz2
$ mkdir build
$ cd build/
$ ../gcc-4.1.0/configure --prefix=/usr
--bindir=/usr/powerpc64-unknown-linux-gnu/gcc-bin/4.1.0
--includedir=/usr/lib/gcc/powerpc64-unknown-linux-gnu/4.1.0/include
--datadir=/usr/share/gcc-data/powerpc64-unknown-linux-gnu/4.1.0
--mandir=/usr/share/gcc-data/powerpc64-unknown-linux-gnu/4.1.0/man
--infodir=/usr/share/gcc-data/powerpc64-unknown-linux-gnu/4.1.0/info
--with-gxx-include-dir=/usr/lib/gcc/powerpc64-unknown-linux-gnu/4.1.0/include/g++-v4
--host=powerpc64-unknown-linux-gnu --build=powerpc64-unknown-linux-gnu
--disable-altivec --enable-nls --without-included-gettext --with-system-zlib
--disable-checking --disable-werror --disable-libunwind-exceptions
--disable-multilib --disable-libmudflap --disable-libssp --disable-libgcj
--enable-languages=c,c++,fortran --enable-shared --enable-threads=posix
--enable-__cxa_atexit --enable-clocale=gnu
[...]
$ make LDFLAGS="" STAGE1_CFLAGS="-O"
LIBPATH="/usr/lib/gcc/powerpc64-unknown-linux-gnu/4.1.0" BOOT_CFLAGS="-m64 -O2
-pipe -mtune=power3 -mcpu=power3" profiledbootstrap

[...]
make[4]: Entering directory `/root/gcc-4.1.0-temp/build/gcc'
make[4]: `crtend.o' is up to date.
make[4]: `crtbeginS.o' is up to date.
make[4]: `crtendS.o' is up to date.
make[4]: `crtbeginT.o' is up to date.
make[4]: `ecrti.o' is up to date.
make[4]: `ecrtn.o' is up to date.
make[4]: `ncrti.o' is up to date.
make[4]: `ncrtn.o' is up to date.
make[4]: `crtsavres.o' is up to date.
make[4]: Leaving directory `/root/gcc-4.1.0-temp/build/gcc'
./xgcc -B./ -B/usr/powerpc64-unknown-linux-gnu/bin/ -isystem
/usr/powerpc64-unknown-linux-gnu/include -isystem
/usr/powerpc64-unknown-linux-gnu/sys-include
-L/root/gcc-4.1.0-temp/build/gcc/../ld -O2  -O2 -O2 -pipe -mtune=power3
-mcpu=power3  -DIN_GCC    -W -Wall -Wwrite-strings -Wstrict-prototypes
-Wmissing-prototypes -Wold-style-definition  -isystem ./include  -fPIC
-specs=ldblspecs -mno-minimal-toc -g -DHAVE_GTHR_DEFAULT -DIN_LIBGCC2
-D__GCC_FLOAT_NOT_NEEDED  -I. -I. -I../../gcc-4.1.0/gcc -I../../gcc-4.1.0/gcc/.
-I../../gcc-4.1.0/gcc/../include -I../../gcc-4.1.0/gcc/../libcpp/include  -fPIC
-mstrict-align -DL_muldi3  -c ../../gcc-4.1.0/gcc/libgcc2.c -o
libgcc/./_muldi3.o
{standard input}: Assembler messages:
{standard input}:85: Warning: Unary operator - ignored because bad operand
follows
{standard input}:85: Warning: zero assumed for missing expression
{standard input}:86: Error: Unrecognized opcode: `m'
{standard input}:96: Error: Unrecognized opcode: `m'
{standard input}:1199: Error: unassigned file number 2
make[3]: *** [libgcc/./_muldi3.o] Error 1
make[3]: Leaving directory `/root/gcc-4.1.0-temp/build/gcc'
make[2]: *** [stmp-multilib] Error 2
make[2]: Leaving directory `/root/gcc-4.1.0-temp/build/gcc'
make[1]: *** [stageprofile_build] Error 2
make[1]: Leaving directory `/root/gcc-4.1.0-temp/build/gcc'
make: *** [profiledbootstrap] Error 2


-- 
           Summary: [4.1/ICE] gcc-4.1.0 won't compile on power3
           Product: gcc
           Version: 4.1.1
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: markus at unixforces dot net
 GCC build triplet: powerpc64-unknown-linux-gnu
  GCC host triplet: powerpc64-unknown-linux-gnu
GCC target triplet: powerpc64-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28326