diff --git a/lib/CodeGen/DwarfEHPrepare.cpp b/lib/CodeGen/DwarfEHPrepare.cpp
index 0ebb5b0..d5a2ed9 100644
--- a/lib/CodeGen/DwarfEHPrepare.cpp
+++ b/lib/CodeGen/DwarfEHPrepare.cpp
@@ -93,7 +93,8 @@
     /// with the eh.exception call. This recursively looks past instructions
     /// which don't change the EH pointer value, like casts or PHI nodes.
     bool FindSelectorAndURoR(Instruction *Inst, bool &URoRInvoke,
-                             SmallPtrSet<IntrinsicInst*, 8> &SelCalls);
+                             SmallPtrSet<IntrinsicInst*, 8> &SelCalls,
+                             SmallPtrSet<PHINode*, 32> &SeenPHIs);
       
   public:
     static char ID; // Pass identification, replacement for typeid.
@@ -199,8 +200,8 @@
 /// change the EH pointer value, like casts or PHI nodes.
 bool
 DwarfEHPrepare::FindSelectorAndURoR(Instruction *Inst, bool &URoRInvoke,
-                                    SmallPtrSet<IntrinsicInst*, 8> &SelCalls) {
-  SmallPtrSet<PHINode*, 32> SeenPHIs;
+                                    SmallPtrSet<IntrinsicInst*, 8> &SelCalls,
+                                    SmallPtrSet<PHINode*, 32> &SeenPHIs) {
   bool Changed = false;
 
   for (Value::use_iterator
@@ -215,11 +216,11 @@
       if (Invoke->getCalledFunction() == URoR)
         URoRInvoke = true;
     } else if (CastInst *CI = dyn_cast<CastInst>(II)) {
-      Changed |= FindSelectorAndURoR(CI, URoRInvoke, SelCalls);
+      Changed |= FindSelectorAndURoR(CI, URoRInvoke, SelCalls, SeenPHIs);
     } else if (PHINode *PN = dyn_cast<PHINode>(II)) {
       if (SeenPHIs.insert(PN))
         // Don't process a PHI node more than once.
-        Changed |= FindSelectorAndURoR(PN, URoRInvoke, SelCalls);
+        Changed |= FindSelectorAndURoR(PN, URoRInvoke, SelCalls, SeenPHIs);
     }
   }
 
@@ -294,7 +295,8 @@
 
       bool URoRInvoke = false;
       SmallPtrSet<IntrinsicInst*, 8> SelCalls;
-      Changed |= FindSelectorAndURoR(EHPtr, URoRInvoke, SelCalls);
+      SmallPtrSet<PHINode*, 32> SeenPHIs;
+      Changed |= FindSelectorAndURoR(EHPtr, URoRInvoke, SelCalls, SeenPHIs);
 
       if (URoRInvoke) {
         // This EH pointer is being used by an invoke of an URoR instruction and