I give up

[Finny Merrill]

What in hell does this piece of greek mean? I have NO idea what it means, 
it only happens when I compile in release mode, with all optimizations 
turned on.

gcc -Dstricmp=strcasecmp -g -mpentiumpro -O6 -ffast-math -funroll-loops 
-fomit-frame-pointer -fexpensive-optimizations -fPIC -o 
releasei386-glibc/game/p_client.o -c ../game/p_client.c
../game/p_client.c: In function `ClientThink':
../game/p_client.c:1754: Insn does not satisfy its constraints:
(insn:TI 1970 2078 1971 (parallel[ 
            (set (mem:HI (plus:SI (reg:SI 6 ebp)
                        (const_int -274 [0xfffffeee])) 0)
                (fix:HI (reg:SF 8 st(0))))
            (clobber (mem:SI (plus:SI (reg:SI 6 ebp)
                        (const_int -272 [0xfffffef0])) 0))
            (clobber (mem:HI (plus:SI (reg:SI 6 ebp)
                        (const_int -274 [0xfffffeee])) 0))
            (clobber (reg:SI 6 ebp))
        ] ) 97 {*fix_trunchi_1} (insn_list 1734 (insn_list:REG_DEP_ANTI 
1961 (insn_list:REG_DEP_ANTI 567 (insn_list:REG_DEP_ANTI 559 
(insn_list:REG_DEP_ANTI 561 (insn_list:REG_DEP_ANTI 563 
(insn_list:REG_DEP_ANTI 1962 (insn_list:REG_DEP_ANTI 1821 
(insn_list:REG_DEP_ANTI 1824 (insn_list:REG_DEP_ANTI 576 
(insn_list:REG_DEP_ANTI 1705 (insn_list 1827 (insn_list:REG_DEP_ANTI 1704 
(insn_list:REG_DEP_ANTI 1964 (insn_list:REG_DEP_ANTI 1965 
(insn_list:REG_DEP_ANTI 1708 (insn_list:REG_DEP_ANTI 1710 
(insn_list:REG_DEP_ANTI 1966 (insn_list:REG_DEP_ANTI 1967 
(insn_list:REG_DEP_ANTI 1713 (insn_list:REG_DEP_ANTI 1727 
(insn_list:REG_DEP_ANTI 1968 (insn_list:REG_DEP_ANTI 1969 
(insn_list:REG_DEP_ANTI 1731 (insn_list:REG_DEP_ANTI 1733 
(nil))))))))))))))))))))))))))
    (expr_list:REG_DEAD (reg:SF 8 st(0))
        (nil)))
../game/p_client.c:1754: confused by earlier errors, bailing out

99% sure it's an assembler error
but that looks like LISP!!