Work in preparation for VLAs. Make sure to restore the stack if necessary (Saving the stack isn't implemented right now :)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60925 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 5 insertions, 0 deletions

diff --git a/lib/CodeGen/CodeGenFunction.h b/lib/CodeGen/CodeGenFunction.h
index 600582c96e..952c3b3c1c 100644
--- a/lib/CodeGen/CodeGenFunction.h
+++ b/lib/CodeGen/CodeGenFunction.h
@@ -166,6 +166,11 @@ private:
   /// statement range in current switch instruction.
   llvm::BasicBlock *CaseRangeBlock;
 
+  /// StackSaveValues - A stack(!) of stack save values. When a new scope is
+  /// entered, a null is pushed on this stack. If a VLA is emitted, then 
+  /// the return value of llvm.stacksave() is stored at the top of this stack.
+  llvm::SmallVector<llvm::Value*, 8> StackSaveValues;
+  
 public:
   CodeGenFunction(CodeGenModule &cgm);