[Bug bootstrap/51086] New: [4.7 regression] ICE in move_insn, at haifa-sched.c:3437

[ro at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51086

             Bug #: 51086
           Summary: [4.7 regression] ICE in move_insn, at
                    haifa-sched.c:3437
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: ro@gcc.gnu.org
                CC: ebotcazou@gcc.gnu.org
              Host: sparc-sun-solaris2.11
            Target: sparc-sun-solaris2.11
             Build: sparc-sun-solaris2.11


Between r181096 and r181259, cc1plus started to ICE compiling the stage 1
libstd++:

$  /var/gcc/regression/trunk/11-gcc-gas/build/./gcc/xgcc -shared-libgcc
-B/var/gcc/regression/trunk/11-gcc-gas/build/./gcc -nostdinc++
-L/var/gcc/regression/trunk/11-gcc-gas/build/sparc-sun-solaris2.11/libstdc++-v3/src
-L/var/gcc/regression/trunk/11-gcc-gas/build/sparc-sun-solaris2.11/libstdc++-v3/src/.libs
-B/vol/gcc/sparc-sun-solaris2.11/bin/ -B/vol/gcc/sparc-sun-solaris2.11/lib/
-isystem /vol/gcc/sparc-sun-solaris2.11/include -isystem
/vol/gcc/sparc-sun-solaris2.11/sys-include
-I/var/gcc/regression/trunk/11-gcc-gas/build/sparc-sun-solaris2.11/libstdc++-v3/include/sparc-sun-solaris2.11
-I/var/gcc/regression/trunk/11-gcc-gas/build/sparc-sun-solaris2.11/libstdc++-v3/include
-I/vol/gcc/src/hg/trunk/local/libstdc++-v3/libsupc++ -fno-implicit-templates
-Wall -Wextra -Wwrite-strings -Wcast-qual -fdiagnostics-show-location=once
-ffunction-sections -fdata-sections -frandom-seed=wlocale-inst.lo -g -O2 -c
/vol/gcc/src/hg/trunk/local/libstdc++-v3/src/wlocale-inst.cc  -fPIC -DPIC -o
.libs/wlocale-inst.o 
In file included from
/var/gcc/regression/trunk/11-gcc-gas/build/sparc-sun-solaris2.11/libstdc++-v3/include/bits/locale_facets.h:2607:0,
                 from
/var/gcc/regression/trunk/11-gcc-gas/build/sparc-sun-solaris2.11/libstdc++-v3/include/locale:42,
                 from
/vol/gcc/src/hg/trunk/local/libstdc++-v3/src/locale-inst.cc:30,
                 from
/vol/gcc/src/hg/trunk/local/libstdc++-v3/src/wlocale-inst.cc:34:
/var/gcc/regression/trunk/11-gcc-gas/build/sparc-sun-solaris2.11/libstdc++-v3/include/bits/locale_facets.tcc:
In member function 'void std::__numpunct_cache<_CharT>::_M_cache(const
std::locale&) [with _CharT = wchar_t]':
/var/gcc/regression/trunk/11-gcc-gas/build/sparc-sun-solaris2.11/libstdc++-v3/include/bits/locale_facets.tcc:128:5:
internal compiler error: in move_insn, at haifa-sched.c:3437

The failure can be reproduced with the attached input file:

$ cc1plus -fpreprocessed wlocale-inst.ii -quiet -mcpu=v9 -O2 -o wlocale-inst.s

  Rainer