[LLVMdev] SelectionDAG legality: isel creating cycles

[Duncan Sands]

Hi David,

> I've run into a situation in isel where it seems like the selector is
> generating a cycle in the DAG.

if you build with expensive checks on (configure with --enable-expensive-checks)
then I think some cycle checking stuff kicks in.  This may help find the moment
when it was introduced.

Ciao,

Duncan.