InstSimplify: Simplify trivial pointer expressions like b + (e - b)

[oota-llvm.git] / lib / Analysis / LoopPass.cpp

diff --git a/lib/Analysis/LoopPass.cpp b/lib/Analysis/LoopPass.cpp
index 683d6d74ab42949b14ef5bc7c45cf11b408c855a..7bd866e73e10f370100e06ce148f34876deb60b6 100644 (file)
--- a/lib/Analysis/LoopPass.cpp
+++ b/lib/Analysis/LoopPass.cpp
@@ -15,6 +15,7 @@
 
 #include "llvm/Analysis/LoopPass.h"
 #include "llvm/IR/IRPrintingPasses.h"
+#include "llvm/IR/LLVMContext.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/Timer.h"
 using namespace llvm;
@@ -44,7 +45,10 @@ public:
     for (Loop::block_iterator b = L->block_begin(), be = L->block_end();
          b != be;
          ++b) {
-      (*b)->print(Out);
+      if (*b)
+        (*b)->print(Out);
+      else
+        Out << "Printing <null> block";
     }
     return false;
   }
@@ -253,6 +257,8 @@ bool LPPassManager::runOnFunction(Function &F) {
 
         // Then call the regular verifyAnalysis functions.
         verifyPreservedAnalysis(P);
+
+        F.getContext().yield();
       }
 
       removeNotPreservedAnalysis(P);