Index: lib/Analysis/IPA/CallGraphSCCPass.cpp
===================================================================
--- lib/Analysis/IPA/CallGraphSCCPass.cpp
+++ lib/Analysis/IPA/CallGraphSCCPass.cpp
@@ -603,8 +603,10 @@
     bool runOnSCC(CallGraphSCC &SCC) override {
       Out << Banner;
       for (CallGraphSCC::iterator I = SCC.begin(), E = SCC.end(); I != E; ++I) {
-        assert((*I)->getFunction() && "Expecting non-null Function");
-        (*I)->getFunction()->print(Out);
+        if ((*I)->getFunction())
+          (*I)->getFunction()->print(Out);
+        else
+          Out << "Printing <null> Function";
       }
       return false;
     }
Index: lib/Analysis/IVUsers.cpp
===================================================================
--- lib/Analysis/IVUsers.cpp
+++ lib/Analysis/IVUsers.cpp
@@ -287,8 +287,10 @@
       OS << ")";
     }
     OS << " in  ";
-    assert(UI->getUser() != nullptr && "Expected non-null User");
-    UI->getUser()->print(OS);
+    if (UI->getUser())
+      UI->getUser()->print(OS);
+    else
+      OS << "Printing <null> User";
     OS << '\n';
   }
 }
Index: lib/Analysis/LoopPass.cpp
===================================================================
--- lib/Analysis/LoopPass.cpp
+++ lib/Analysis/LoopPass.cpp
@@ -45,8 +45,10 @@
     for (Loop::block_iterator b = L->block_begin(), be = L->block_end();
          b != be;
          ++b) {
-      assert((*b) != nullptr && "Expecting non-null block");
-      (*b)->print(Out);
+      if (*b)
+        (*b)->print(Out);
+      else
+        Out << "Printing <null> block";
     }
     return false;
   }
Index: lib/Analysis/RegionPass.cpp
===================================================================
--- lib/Analysis/RegionPass.cpp
+++ lib/Analysis/RegionPass.cpp
@@ -196,8 +196,10 @@
   bool runOnRegion(Region *R, RGPassManager &RGM) override {
     Out << Banner;
     for (const auto &BB : R->blocks()) {
-      assert(BB != nullptr && "Expecting non-null Block");
-      BB->print(Out);
+      if (BB)
+        BB->print(Out);
+      else
+        Out << "Printing <null> Block";
     }
 
     return false;
Index: lib/CodeGen/AsmPrinter/AsmPrinter.cpp
===================================================================
--- lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -1867,8 +1867,10 @@
     SmallString<8> StrVal;
     CFP->getValueAPF().toString(StrVal);
 
-    assert(CFP->getType() != nullptr && "Expecting non-null Type");
-    CFP->getType()->print(AP.OutStreamer.GetCommentOS());
+    if (CFP->getType())
+      CFP->getType()->print(AP.OutStreamer.GetCommentOS());
+    else
+      AP.OutStreamer.GetCommentOS() << "Printing <null> Type";
     AP.OutStreamer.GetCommentOS() << ' ' << StrVal << '\n';
   }
 
Index: lib/IR/Core.cpp
===================================================================
--- lib/IR/Core.cpp
+++ lib/IR/Core.cpp
@@ -281,8 +281,11 @@
   std::string buf;
   raw_string_ostream os(buf);
 
-  assert(unwrap(Ty) != nullptr && "Expecting non-null Type");
-  unwrap(Ty)->print(os);
+  if (unwrap(Ty))
+    unwrap(Ty)->print(os);
+  else
+    os << "Printing <null> Type";
+
   os.flush();
 
   return strdup(buf.c_str());
@@ -532,8 +535,11 @@
   std::string buf;
   raw_string_ostream os(buf);
 
-  assert(unwrap(Val) != nullptr && "Expecting non-null Value");
-  unwrap(Val)->print(os);
+  if (unwrap(Val))
+    unwrap(Val)->print(os);
+  else
+    os << "Printing <null> Value";
+
   os.flush();
 
   return strdup(buf.c_str());
Index: lib/Transforms/Instrumentation/DebugIR.cpp
===================================================================
--- lib/Transforms/Instrumentation/DebugIR.cpp
+++ lib/Transforms/Instrumentation/DebugIR.cpp
@@ -352,10 +352,12 @@
   }
 
   std::string getTypeName(Type *T) {
-    assert(T != nullptr && "Expecting non-null Type");
     std::string TypeName;
     raw_string_ostream TypeStream(TypeName);
-    T->print(TypeStream);
+    if (T)
+      T->print(TypeStream);
+    else
+      TypeStream << "Printing <null> Type";
     TypeStream.flush();
     return TypeName;
   }