Refactoring of conversion ops, part 5: drop TOINT/TOI64/TONUM.

lib/dump.lua

@@ -222,7 +222,6 @@ span.irt_int, span.irt_i8, span.irt_u8, span.irt_i16, span.irt_u16 { color: #b04
 local colorize, irtype
 
 -- Lookup tables to convert some literals into names.
-local tointname = { [0] = "check", "index", "", "Z", "S", "T", }
 local litname = {
   ["SLOAD "] = setmetatable({}, { __index = function(t, mode)
     local s = ""
@@ -246,8 +245,6 @@ local litname = {
     t[mode] = s
     return s
   end}),
-  ["TOINT "] = tointname,
-  ["TOI64 "] = tointname,
   ["FLOAD "] = vmdef.irfield,
   ["FREF  "] = vmdef.irfield,
   ["FPMATH"] = vmdef.irfpm,