09-11-2012, 10:07 PM
There's also TCC, which is open source and retargetable. Having said that; Toshiba's compiler is actually quite good when it comes to optimization. It does have some problems when it comes to stuff like dereferencing linearly increasing pointers within loops, loop reversal, or converting simple copy loops to LDIR instructions - but other than that the generated code looks pretty good. That's something that anyone porting a compiler will need to consider, since efficient code is really important on a limited system like the NGPC.