[llvm-commits] [llvm] r42981 - in /llvm/trunk: include/llvm/CodeGen/SelectionDAG.h lib/CodeGen/SelectionDAG/DAGCombiner.cpp lib/CodeGen/SelectionDAG/LegalizeDAGTypes.cpp lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp lib/CodeGen/SelectionDAG/SelectionDAG.cpp lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp utils/TableGen/DAGISelEmitter.cpp

[Duncan Sands]

Hi Chris,

> > By the way the logic supposes that the result of any node is an  
> > operand for
> > some other node.  Is at least one result always used?
> 
> Nope, nodes are allowed to be unreachable/dead.  What part assumes  
> that they are used?

I thought I had spotted a problem, but I can't find it anymore,
so don't worry about it :)

Ciao,

Duncan.