* Ajit Kumar Agarwal: > The replacement of malloc with alloca can be done on the following > analysis. > > If the lifetime of an object does not stretch beyond the immediate > scope. In such cases the malloc can be replaced with alloca. This > increases the performance to a great extent.
You also need to make sure that the object is small (less than a page) and that there is no deep recursion going on. Otherwise, the program may no longer work after the transformation with real-world restricted stack sizes. It may even end up with additional security issues.
