Index: lib/Analysis/DependenceInfo.cpp
===================================================================
--- lib/Analysis/DependenceInfo.cpp
+++ lib/Analysis/DependenceInfo.cpp
@@ -45,7 +45,7 @@
     "polly-dependences-computeout",
     cl::desc("Bound the dependence analysis by a maximal amount of "
              "computational steps (0 means no bound)"),
-    cl::Hidden, cl::init(500000), cl::ZeroOrMore, cl::cat(PollyCategory));
+    cl::Hidden, cl::init(0), cl::ZeroOrMore, cl::cat(PollyCategory));
 
 static cl::opt<bool> LegalityCheckDisabled(
     "disable-polly-legality", cl::desc("Disable polly legality check"),
Index: lib/Analysis/ScopDetection.cpp
===================================================================
--- lib/Analysis/ScopDetection.cpp
+++ lib/Analysis/ScopDetection.cpp
@@ -237,7 +237,7 @@
 static cl::opt<bool, true> XPollyInvariantLoadHoisting(
     "polly-invariant-load-hoisting", cl::desc("Hoist invariant loads."),
     cl::location(PollyInvariantLoadHoisting), cl::Hidden, cl::ZeroOrMore,
-    cl::init(false), cl::cat(PollyCategory));
+    cl::init(true), cl::cat(PollyCategory));
 
 /// The minimal trip count under which loops are considered unprofitable.
 static const unsigned MIN_LOOP_TRIP_COUNT = 8;
@@ -1185,11 +1185,11 @@
       continue;
 
     if (isErrorBlock(*OpInst->getParent(), Context.CurRegion, LI, DT)) {
-      auto *PHI = dyn_cast<PHINode>(OpInst);
+      auto *PHI = dyn_cast<PHINode>(&Inst);
       if (PHI) {
         for (User *U : PHI->users()) {
           if (!isa<TerminatorInst>(U))
-            return false;
+            return true;
         }
       } else {
         return false;
Index: lib/CodeGen/IslAst.cpp
===================================================================
--- lib/CodeGen/IslAst.cpp
+++ lib/CodeGen/IslAst.cpp
@@ -814,7 +814,7 @@
 
   Ast.reset(new IslAstInfo(Scop, D));
 
-  DEBUG(printScop(dbgs(), Scop));
+  printScop(errs(), Scop);
   return false;
 }
 
Index: lib/Support/RegisterPasses.cpp
===================================================================
--- lib/Support/RegisterPasses.cpp
+++ lib/Support/RegisterPasses.cpp
@@ -56,7 +56,7 @@
 
 static cl::opt<bool>
     PollyEnabled("polly", cl::desc("Enable the polly optimizer (only at -O3)"),
-                 cl::init(false), cl::ZeroOrMore, cl::cat(PollyCategory));
+                 cl::init(true), cl::ZeroOrMore, cl::cat(PollyCategory));
 
 static cl::opt<bool> PollyDetectOnly(
     "polly-only-scop-detection",
Index: lib/Transform/ScheduleOptimizer.cpp
===================================================================
--- lib/Transform/ScheduleOptimizer.cpp
+++ lib/Transform/ScheduleOptimizer.cpp
@@ -110,7 +110,7 @@
 
 static cl::opt<std::string> FusionStrategy(
     "polly-opt-fusion", cl::desc("The fusion strategy to choose (min/max)"),
-    cl::Hidden, cl::init("min"), cl::ZeroOrMore, cl::cat(PollyCategory));
+    cl::Hidden, cl::init("max"), cl::ZeroOrMore, cl::cat(PollyCategory));
 
 static cl::opt<std::string>
     MaximizeBandDepth("polly-opt-maximize-bands",