[Bug optimization/12973] New: libjava verify.cc build failure at -O1

[bryce at mckinlay dot net dot nz]

gcc version 3.4 20031108 (experimental)

Using CXXFLAGS="-O1", libjava fails to build with the following error:

../../../libjava/verify.cc: In member function `void _Jv_BytecodeVerifier::verify_instructions_0()':
../../../libjava/verify.cc:101: error: unrecognizable insn:
(insn 23071 1289 23072 83 ../../../libjava/verify.cc:553 (set (reg:CC %eflags)
        (compare:CC (mem:QI (plus:SI (mem/s/j:SI (plus:SI (reg/v/f:SI 242 [ copy ])
                            (const_int 16 [0x10])) [0 <variable>.local_changed+0 S4 A32])
                    (reg/v:SI 270 [ i ])) [0 S1 A8])
            (const_int 1 [0x1]))) -1 (nil)
    (nil))
../../../libjava/verify.cc:101: internal compiler error: in extract_insn, at recog.c:2061

It only fails at -O1. At -O0, -O2, or -O3, the compile succeeds.

-- 
           Summary: libjava verify.cc build failure at -O1
           Product: gcc
           Version: 3.4
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code, build
          Severity: normal
          Priority: P2
         Component: optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: bryce at mckinlay dot net dot nz
                CC: gcc-bugs at gcc dot gnu dot org,mark at klomp dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12973