Add back functionality removed in r210497.

Instead of asserting, output a message stating that a null pointer was found.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211430 91177308-0d34-0410-b5e6-96231b3b80d8

4 files changed, 16 insertions, 8 deletions

diff --git a/lib/Analysis/IPA/CallGraphSCCPass.cpp b/lib/Analysis/IPA/CallGraphSCCPass.cpp
index 0d9d0ef842..730eb7156d 100644
--- a/lib/Analysis/IPA/CallGraphSCCPass.cpp
+++ b/lib/Analysis/IPA/CallGraphSCCPass.cpp
@@ -603,8 +603,10 @@ namespace {
     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;
     }
diff --git a/lib/Analysis/IVUsers.cpp b/lib/Analysis/IVUsers.cpp
index 0b94238e66..24655aa002 100644
--- a/lib/Analysis/IVUsers.cpp
+++ b/lib/Analysis/IVUsers.cpp
@@ -287,8 +287,10 @@ void IVUsers::print(raw_ostream &OS, const Module *M) const {
       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';
   }
 }
diff --git a/lib/Analysis/LoopPass.cpp b/lib/Analysis/LoopPass.cpp
index 2c6e6e3fff..7bd866e73e 100644
--- a/lib/Analysis/LoopPass.cpp
+++ b/lib/Analysis/LoopPass.cpp
@@ -45,8 +45,10 @@ public:
     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;
   }
diff --git a/lib/Analysis/RegionPass.cpp b/lib/Analysis/RegionPass.cpp
index d11b3323ca..71de14450b 100644
--- a/lib/Analysis/RegionPass.cpp
+++ b/lib/Analysis/RegionPass.cpp
@@ -196,8 +196,10 @@ public:
   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;