8348261: assert(n->is_Mem()) failed: memory node required

Reviewed-by: epeter, chagedorn
Backport-of: f6a8db289e5366845f9518fce7a98538017e9570

Author: Vladimir Kozlov

src/hotspot/share/opto/escape.cpp

@@ -4706,13 +4706,21 @@ void ConnectionGraph::split_unique_types(GrowableArray<Node *>  &alloc_worklist,
       if (n == nullptr) {
         continue;
       }
+    } else if (n->Opcode() == Op_StrInflatedCopy) {
+      // Check direct uses of StrInflatedCopy.
+      // It is memory type Node - no special SCMemProj node.
     } else if (n->Opcode() == Op_StrCompressedCopy ||
                n->Opcode() == Op_EncodeISOArray) {
       // get the memory projection
       n = n->find_out_with(Op_SCMemProj);
       assert(n != nullptr && n->Opcode() == Op_SCMemProj, "memory projection required");
     } else {
+#ifdef ASSERT
+      if (!n->is_Mem()) {
+        n->dump();
+      }
       assert(n->is_Mem(), "memory node required.");
+#endif
       Node *addr = n->in(MemNode::Address);
       const Type *addr_t = igvn->type(addr);
       if (addr_t == Type::TOP) {