I don't know if it would actually increase performance but since the whole thing seems to be about wrapping from numerical to string context that gave me an idea. If you implemented a hash with the numerical operators as keys and the string operators as their corresponding values couldn't you rewrite the whole if elsif else etc construct as:

if (eval "$conwithposition{$key_pos}[1] $mapContext{$conwithposition{$
+key_pos}[0] $line[$key_pos]"){
          foreach $col(sort {$a<=>$b} keys(%cols_pos)){
              push @tmparr,$line[$col];
          }
          $tmparr=join("|",@tmparr);
          push @listcols,$cols_pos{$col};
          push @result_arr,[ $tmparr ];
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