Internal compiler error - unrecognizable insn

[Rick Ohnemus]

I got the following error while compiling gdb 4.17: 

valarith.c: In function `value_neg':
valarith.c:1175: internal error--unrecognizable insn:
(insn 231 128 232 (set (reg:SF 40 %f8)
        (neg (reg:SF 36 %f4))) -1 (nil)
    (nil))
../../gcc/toplev.c:1365: Internal compiler error in function fatal_insn


gcc -v output:
Reading specs from /usr/local/lib/gcc-lib/sparc-sun-solaris2.6/egcs-2.92.00/specs
gcc version egcs-2.92.00 19980818 (gcc2 ss-980609 experimental)