search for: targetselectoindag

Hello, Everyone > TargetSelectoinDAG.td and then why the two versions are "identical" in > TableGen's mind. That's correct. The patterns are identical since the types of operands involved are the same. DAG pattern matching is done before regalloc, there are not regclasses actually at that point, thus both patterns...

..., you probably don't want to turn off the "commutative" property, unless it really isn't commutative. I know it's painful, but it might be best just to slog through the TableGen code in a debugger, and see why it is that your stuff inherits properties from the ADD in TargetSelectoinDAG.td and then why the two versions are "identical" in TableGen's mind. -bw On Jul 5, 2009, at 7:15 PM, Javier Martinez wrote: > Hi Bill, > > Yes, there are other patterns. I tried commenting out all the other > instructions definitions and I still get this error. Afte...

Hi Bill, Yes, there are other patterns. I tried commenting out all the other instructions definitions and I still get this error. After debugging TblGen I found that the second pattern is being generated as a variant of the first. I think the reason is that the PADD instruction is inheriting the commutative property from ADD defined inTargetSelectionDAG.td. The variant ends up being the same