Modify code during a pass

[Floris van Nee]

While looking at some of the examples and documentation on the website, I noticed that most of them are aimed at recognizing certain patterns. However, I was wondering if it is also possible to modify code during a pass. For example: can I make all functions which match a certain name empty?

For example, transform:

void f() { printf("hi"); int x = 2 + 3; } 

Into:

void f() { }

-Floris

[Basile Starynkevitch]

This is certainly possible: MELT gives you a lot of Gimple and Basic Block building routines.

And most GCC optimization passes are of course modifying the GIMPLE.

I guess that you have to replace the ENTER and EXIT block of your f with a single empty basic block.

Regards.

--
Basile Starynkevitch