/* operator name, is it pure, pretty name */O(Obad,         1,	OTmisc,	"BAD")O(Oauto,	1,	OTpre,	"auto")O(Oadd,	        1,	OTbin,	"+")O(Osub,	        1,	OTbin,	"-")O(Omul,	        1,	OTbin,	"*")O(Odiv,	        1,	OTbin,	"/")O(Omod,	        1,	OTbin,	"%")O(Oneg,	        1,	OTpre,	"-")O(Obor,	        1,	OTbin,	"|")O(Oband,	1,	OTbin,  "&")O(Obxor,	1,	OTbin,  "^")O(Obsl,	        1,	OTbin,  "<<")O(Obsr,	        1,	OTbin,  ">>")O(Obnot,	1,	OTpre,  "~")O(Opreinc,	1,	OTpre,  "++")O(Opostinc,	1,	OTpost, "++")O(Opredec,	1,	OTpre,  "--")O(Opostdec,	1,	OTpost, "--")O(Oaddr,	1,	OTpre,  "&")O(Oderef,	1,	OTpost, "#")O(Olor,	        1,	OTbin,  "||")O(Oland,	1,	OTbin,  "&&")O(Olnot,	1,	OTpre,  "!")O(Oeq,	        1,	OTbin,  "==")O(One,	        1,	OTbin,  "!=")O(Ogt,	        1,	OTbin,  ">")O(Oge,	        1,	OTbin,  ">=")O(Olt,	        1,	OTbin,  "<")O(Ole,	        1,	OTbin,  "<=")O(Oasn,	        1,	OTbin,  "=")O(Oaddeq,	1,	OTbin,  "+=")O(Osubeq,	1,	OTbin,  "-=")O(Omuleq,	1,	OTbin,  "*=")O(Odiveq,	1,	OTbin,  "/=")O(Omodeq,	1,	OTbin,  "%=")O(Oboreq,	1,	OTbin,  "|=")O(Obandeq,	1,	OTbin,  "&=")O(Obxoreq,	1,	OTbin,  "^=")O(Obsleq,	1,	OTbin,  "<<=")O(Obsreq,	1,	OTbin,  ">>=")O(Oidx,	        1,	OTmisc,  NULL)O(Oslice,	1,	OTmisc,  NULL)O(Omemb,	1,	OTmisc,  NULL)O(Otupmemb,	1,	OTmisc,	NULL)O(Osize,	1,	OTmisc,  NULL)O(Ocall,	0,	OTmisc,  NULL)O(Ocast,	1,	OTmisc,  NULL)O(Oret,	        1,	OTpre,  "->")O(Ojmp,	        0,	OTpre,  "goto")O(Obreak,	0,	OTzarg, "break")O(Ocontinue,	0,	OTzarg, "continue")O(Ovar,	        1,	OTmisc, NULL)O(Ogap,	        1,	OTmisc, NULL)O(Olit,	        1,	OTmisc, NULL)O(Oucon,	1,	OTmisc, "`")O(Otup,	        1,	OTmisc, NULL)O(Ostruct,	1,	OTmisc, NULL)O(Oarr,	        1,	OTmisc, NULL)O(Otern,        1,	OTmisc, "?:") /* all below this point are backend-only */O(Odead,        0,      OTmisc, "DEAD")         /* dead code */O(Oundef,       0,      OTmisc, "UNDEF")        /* undefined var */O(Odef,         0,      OTmisc, "DEF")          /* defined var */O(Ocjmp,	1,	OTmisc, "CJMP")         /* conditional jump */O(Ovjmp,	1,	OTmisc, "VJMP")		/* variable arg list jump */O(Oset,	        1,	OTbin,  "=")            /* store to var */O(Osllen,	1,	OTpre,  "SLLEN")        /* size of slice */O(Oslbase,	1,	OTpre,  "SLBASE")       /* base of sice */O(Outag,	1,	OTpre,  "UTAG")	        /* tag of union */O(Oudata,	1,	OTpre,  "UDATA")        /* pointer to contents of union */O(Otupget,	1,	OTpre,  "TUPGET")        /* pointer to contents of union */O(Oblit,	1,	OTbin,  "BLIT")         /* blit memory */O(Oclear,       1,      OTpre,  "CLEAR")        /* zero */O(Ocallind,     1,      OTpre,  "CALL")         /* call with environment */ /* integer conversions */O(Otrunc,	1,	OTmisc, NULL)   /* truncating cast */O(Ozwiden,	1,	OTmisc, NULL)   /* zero-extending widening cast */O(Oswiden,	1,	OTmisc, NULL)   /* sign-extending widening cast */ /* float conversions */O(Oflt2int,	1,	OTmisc, NULL)   /* float to int conversion */O(Oint2flt,	1,	OTmisc, NULL)   /* int to float conversion */O(Oflt2flt,	1,	OTmisc, NULL)   /* flt32<->flt64 conversion */ /* floating arithmetic */O(Ofadd,	1,	OTmisc, NULL)O(Ofsub,	1,	OTmisc, NULL)O(Ofmul,	1,	OTmisc, NULL)O(Ofdiv,	1,	OTmisc, NULL)O(Ofneg,	1,	OTmisc, NULL) /* floating point comparisons */O(Ofeq,	        1,	OTmisc, NULL)O(Ofne,	        1,	OTmisc, NULL)O(Ofgt,	        1,	OTmisc, NULL)O(Ofge,	        1,	OTmisc, NULL)O(Oflt,	        1,	OTmisc, NULL)O(Ofle,	        1,	OTmisc, NULL) /* unsigned comparisons */O(Oueq,	        1,	OTmisc, NULL)O(Oune,	        1,	OTmisc, NULL)O(Ougt,	        1,	OTmisc, NULL)O(Ouge,	        1,	OTmisc, NULL)O(Oult,	        1,	OTmisc, NULL)O(Oule,	        1,	OTmisc, NULL)