Dear all, I have been also been looking into how to generate a function call for certain operations. I've looked at various other targets for a similar problem/solution but have not seen anything. On my target architecture, we have certain optimized versions of the multiplication for example.
I wanted to replace certain mutliplications with a function call. The solution I found was to do perform a FAIL on the define_expand of the multiplication for these cases. This forces the compiler to generate a function call to __multdi3. I then go in the define_expand of the function call and check the symbol_ref to see what function is called. I can then modify the call at that point. My question is: is this a good approach or is there another solution that you would use? Thanks again for your time, Jean Christophe Beyler
