[Bug ipa/79931] New: ICE in dump_possible_polymorphic_call_targets with -fdump-ipa-all -O2

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79931

            Bug ID: 79931
           Summary: ICE in dump_possible_polymorphic_call_targets with
                    -fdump-ipa-all -O2
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: ipa
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
  Target Milestone: ---

While adding a new pass, I noticed this ICE (tested with a plain version of GCC
also).
testcase:

class DocumentImpl;
struct NodeImpl
{
  virtual DocumentImpl * getOwnerDocument();
  virtual NodeImpl * getParentNode();
  virtual NodeImpl * removeChild(NodeImpl *oldChild);
};
struct AttrImpl : NodeImpl
{
  NodeImpl *insertBefore(NodeImpl *newChild, NodeImpl *refChild);
};
struct DocumentImpl : NodeImpl
{
  virtual NodeImpl *removeChild(NodeImpl *oldChild);
  virtual int* getRanges();
};
NodeImpl *AttrImpl::insertBefore(NodeImpl *newChild, NodeImpl *refChild) {
  NodeImpl *oldparent = newChild->getParentNode();
  oldparent->removeChild(newChild);
  this->getOwnerDocument()->getRanges();
}

--- CUT ---

This is reduced from 483.xalancbmk in SPEC CPU 2006.
Compile with -fdump-ipa-all -O2 and the ICE will produce.