[Bug bootstrap/50354] New: [4.7 regression] sparc64-linux gcc generates assembly code that gas rejects, breaking bootstrap

[mikpe at it dot uu.se]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50354

             Bug #: 50354
           Summary: [4.7 regression] sparc64-linux gcc generates assembly
                    code that gas rejects, breaking bootstrap
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: mikpe@it.uu.se


Attempting to bootstrap gcc-4.7-20110910 on sparc64-linux fails for me with:

/mnt/scratch/objdir47/./gcc/xgcc -B/mnt/scratch/objdir47/./gcc/
-B/mnt/scratch/install47/sparc64-unknown-linux-gnu/bin/
-B/mnt/scratch/install47/sparc64-unknown-linux-gnu/lib/ -isystem
/mnt/scratch/install47/sparc64-unknown-linux-gnu/include -isystem
/mnt/scratch/install47/sparc64-unknown-linux-gnu/sys-include    -g -O2 -O2  -I.
-I. -I/mnt/scratch/gcc-4.7-20110910/gcc -I/mnt/scratch/gcc-4.7-20110910/gcc/.
-I/mnt/scratch/gcc-4.7-20110910/gcc/../include
-I/mnt/scratch/gcc-4.7-20110910/gcc/../libdecnumber
-I/mnt/scratch/gcc-4.7-20110910/gcc/../libdecnumber/dpd -I../libdecnumber
-I/mnt/scratch/gcc-4.7-20110910/gcc/../libgcc -g -O2 -DIN_GCC   -W -Wall
-Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes
-Wold-style-definition  -isystem ./include  -fPIC -g -DHAVE_GTHR_DEFAULT
-DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector   -I. -I. -I../.././gcc
-I/mnt/scratch/gcc-4.7-20110910/libgcc -I/mnt/scratch/gcc-4.7-20110910/libgcc/.
-I/mnt/scratch/gcc-4.7-20110910/libgcc/../gcc
-I/mnt/scratch/gcc-4.7-20110910/libgcc/../include  -DHAVE_CC_TLS  -o _mulsc3.o
-MT _mulsc3.o -MD -MP -MF _mulsc3.dep -DL_mulsc3 -c
/mnt/scratch/gcc-4.7-20110910/libgcc/../gcc/libgcc2.c \
          -fvisibility=hidden -DHIDE_EXPORTS
/tmp/ccRPj4yC.s: Assembler messages:
/tmp/ccRPj4yC.s:201: Error: Architecture mismatch on "fzeros".
/tmp/ccRPj4yC.s:201:  (Requires v9a|v9b; requested architecture is v9.)
/tmp/ccRPj4yC.s:243: Error: Architecture mismatch on "fzeros".
/tmp/ccRPj4yC.s:243:  (Requires v9a|v9b; requested architecture is v9.)
/tmp/ccRPj4yC.s:259: Error: Architecture mismatch on "fzeros".
/tmp/ccRPj4yC.s:259:  (Requires v9a|v9b; requested architecture is v9.)
/tmp/ccRPj4yC.s:298: Error: Architecture mismatch on "fzeros".
/tmp/ccRPj4yC.s:298:  (Requires v9a|v9b; requested architecture is v9.)
/tmp/ccRPj4yC.s:309: Error: Architecture mismatch on "fzeros".
/tmp/ccRPj4yC.s:309:  (Requires v9a|v9b; requested architecture is v9.)
/tmp/ccRPj4yC.s:350: Error: Architecture mismatch on "fzeros".
/tmp/ccRPj4yC.s:350:  (Requires v9a|v9b; requested architecture is v9.)
/tmp/ccRPj4yC.s:368: Error: Architecture mismatch on "fzeros".
/tmp/ccRPj4yC.s:368:  (Requires v9a|v9b; requested architecture is v9.)
/tmp/ccRPj4yC.s:381: Error: Architecture mismatch on "fzeros".
/tmp/ccRPj4yC.s:381:  (Requires v9a|v9b; requested architecture is v9.)
/tmp/ccRPj4yC.s:412: Error: Architecture mismatch on "fzeros".
/tmp/ccRPj4yC.s:412:  (Requires v9a|v9b; requested architecture is v9.)
/tmp/ccRPj4yC.s:419: Error: Architecture mismatch on "fzeros".
/tmp/ccRPj4yC.s:419:  (Requires v9a|v9b; requested architecture is v9.)
/tmp/ccRPj4yC.s:433: Error: Architecture mismatch on "fzeros".
/tmp/ccRPj4yC.s:433:  (Requires v9a|v9b; requested architecture is v9.)
/tmp/ccRPj4yC.s:443: Error: Architecture mismatch on "fzeros".
/tmp/ccRPj4yC.s:443:  (Requires v9a|v9b; requested architecture is v9.)
/tmp/ccRPj4yC.s:458: Error: Architecture mismatch on "fzeros".
/tmp/ccRPj4yC.s:458:  (Requires v9a|v9b; requested architecture is v9.)
/tmp/ccRPj4yC.s:473: Error: Architecture mismatch on "fzeros".
/tmp/ccRPj4yC.s:473:  (Requires v9a|v9b; requested architecture is v9.)
make[3]: *** [_mulsc3.o] Error 1
make[3]: Leaving directory
`/mnt/scratch/objdir47/sparc64-unknown-linux-gnu/libgcc'
make[2]: *** [all-stage1-target-libgcc] Error 2
make[2]: Leaving directory `/mnt/scratch/objdir47'
make[1]: *** [stage1-bubble] Error 2
make[1]: Leaving directory `/mnt/scratch/objdir47'
make: *** [bootstrap] Error 2

This happens with both the system 'as' (binutils-2.19.51.0.14-37.fc12) and my
privately built and installed one (binutils-2.21.1 + some fixes from trunk).

The snapshot from two weeks ago, gcc-4.7-20110827, bootstrapped fine.

Configured as:
/mnt/scratch/gcc-4.7-20110910/configure --prefix=/mnt/scratch/install47
--with-gmp=/home/mikpe/pkgs/linux-sparc64/gmp-4.3.2
--with-mpfr=/home/mikpe/pkgs/linux-sparc64/mpfr-2.4.2
--with-mpc=/home/mikpe/pkgs/linux-sparc64/mpc-0.8.2 --with-cpu=v8
--enable-multilib --disable-plugin --disable-lto --disable-nls
--enable-threads=posix --enable-checking=release --disable-libmudflap
--enable-languages=c,c++,fortran,ada --disable-build-poststage1-with-cxx