[Bug rtl-optimization/22553] New: [4.1 regression] ICE building libstdc++

["dank at kegel dot com" <gcc-bugzilla@gcc.gnu.org>]

Building a C/C++ cross-compiler targeting sh4-linux fails with
include/ext/bitmap_allocator.h:1085: internal compiler error: in spill_failure,
at reload1.c:1889
I grabbed the preprocessed source, and was able to reproduce it with
the commandline

gcc-4.1-20050716-glibc-2.3.2/build-gcc/./gcc/xgcc
-B/.../gcc-4.1-20050716-glibc-2.3.2/build-gcc/./gcc/ -O2 -fPIC -c foo.ii
foo.ii: In member function '_Tp*
__gnu_cxx::bitmap_allocator<_Tp>::_M_allocate_single_object() [with _Tp = wchar_t]':
foo.ii:2206: error: unable to find a register to spill in class 'R0_REGS'
foo.ii:2206: error: this is the insn:
(insn:HI 393 416 746 30 (set (reg/f:SI 2 r2 [388])
        (mem/u:SI (plus:SI (reg:SI 12 r12)
                (reg/f:SI 10 r10 [574])) [0 S4 A32])) 172 {movsi_ie} (nil)
    (expr_list:REG_EQUIV (symbol_ref/i:SI
("_ZN9__gnu_cxx16bitmap_allocatorIwE13_S_block_sizeE") <var_decl 0x40411ba0
_S_block_size>)
        (nil)))
foo.ii:2206: internal compiler error: in spill_failure, at reload1.c:1889

-- 
           Summary: [4.1 regression] ICE building libstdc++
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: rtl-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dank at kegel dot com
                CC: gcc-bugs at gcc dot gnu dot org
GCC target triplet: sh4-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22553