"Radu Hobincu" <radu.hobi...@arh.pub.ro> writes: > I have 16 vectorial registers in the machine R16-R31 which all have 128 > cells of 16 bits each. These support ALU operations and load/stores just > as normal registers, but in one clock. So an > > add R16 R17 R18 > > will add the whole R17 array with R18 (corresponding cells) and place the > result in R16. The 'where' instruction places a mask on the array so the > operation is done only where a certain condition is met. In the example in > the previous e-mail, where `a` is less than `b`. I've read the description > of doloop and I don't think I can use it in this case. I'll have to dig > more or settle with -O0 and cry.
Ah, that sounds like a straight conditional execution model, which gcc implements via cond_exec. Look for define_cond_exec in the manual. Ian
