Split the exception object out into its own stack.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64032 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CodeGenFunction.h b/lib/CodeGen/CodeGenFunction.h
index ce32a45..9d8d3a3 100644
--- a/lib/CodeGen/CodeGenFunction.h
+++ b/lib/CodeGen/CodeGenFunction.h
@@ -97,7 +97,7 @@
   struct ObjCEHEntry {
     ObjCEHEntry(llvm::BasicBlock *fb, llvm::SwitchInst *fs, llvm::Value *dc)
       : FinallyBlock(fb), FinallySwitch(fs), 
-        DestCode(dc), Exception(0) {}
+        DestCode(dc) {}
 
     /// Entry point to the finally block.
     llvm::BasicBlock *FinallyBlock; 
@@ -109,12 +109,12 @@
     /// Variable holding the code for the destination of a jump
     /// through the @finally block.
     llvm::Value *DestCode;
-
-    /// The exception object being handled, during IR generation for a
-    /// @catch block.
-    llvm::Value *Exception; 
   };
 
+  /// ObjCEHValueStack - Stack of exception objects being handled,
+  /// during IR generation for a @catch block.
+  llvm::SmallVector<llvm::Value*, 8> ObjCEHValueStack;
+  
   typedef llvm::SmallVector<ObjCEHEntry*, 8> ObjCEHStackType;
   ObjCEHStackType ObjCEHStack;