X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FAnalysis%2FLoopPass.cpp;h=7bd866e73e10f370100e06ce148f34876deb60b6;hb=540b4f6c08a089f487edad2befb7caf98c127ac5;hp=38e753f129e9393f9175d5c2c5ed0c897278c840;hpb=c37e6c073436be77e90ef640c0e6627200ba19f7;p=oota-llvm.git

diff --git a/lib/Analysis/LoopPass.cpp b/lib/Analysis/LoopPass.cpp
index 38e753f129e..7bd866e73e1 100644
--- a/lib/Analysis/LoopPass.cpp
+++ b/lib/Analysis/LoopPass.cpp
@@ -15,10 +15,13 @@
 
 #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;
 
+#define DEBUG_TYPE "loop-pass-manager"
+
 namespace {
 
 /// PrintLoopPass - Print a Function corresponding to a Loop.
@@ -42,7 +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;
   }
@@ -61,8 +67,8 @@ LPPassManager::LPPassManager()
   : FunctionPass(ID), PMDataManager() {
   skipThisLoop = false;
   redoThisLoop = false;
-  LI = NULL;
-  CurrentLoop = NULL;
+  LI = nullptr;
+  CurrentLoop = nullptr;
 }
 
 /// Delete loop from the loop queue and loop hierarchy (LoopInfo).
@@ -251,6 +257,8 @@ bool LPPassManager::runOnFunction(Function &F) {
 
         // Then call the regular verifyAnalysis functions.
         verifyPreservedAnalysis(P);
+
+        F.getContext().yield();
       }
 
       removeNotPreservedAnalysis(P);