Sei Lisa 097c054494 Optimize 'if' statements better. ...

if (!cond) X; else Y;  ->  if (cond) Y; else X;

if (int1 == int2) X; else Y;  ->  if (int1 ^ int2) Y; else X;

When 'cond' is of a type other than 'key': if (cond) ; else X;  ->  if (!cond) X;  (this required changing if(str) to its compiled equivalent if(!(str == "")), so that 'cond' is always either key or integer).

if (cond) ;  ->  cond; and folds it as a statement, which may eliminate it if it's SEF. This is done after eliminating 'else ;' so that it also optimizes 'if (cond) ; else ;' the same way.

This removes a TODO item.

2017-10-30 19:23:01 +01:00

83 KiB

Raw Blame History

View Raw