Only gather frame info if debug or eh.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33639 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/CodeGen/MachineModuleInfo.h

@@ -36,6 +36,7 @@
 #include "llvm/ADT/UniqueVector.h"
 #include "llvm/GlobalValue.h"
 #include "llvm/Pass.h"
+#include "llvm/Target/TargetOptions.h"
 
 namespace llvm {
 
@@ -1025,6 +1026,10 @@ public:
   ///
   bool hasDebugInfo() const { return !CompileUnits.empty(); }
   
+  /// needsFrameInfo - Returns true if we need to gather callee-saved register
+  /// move info for the frame.
+  bool needsFrameInfo() const { return hasDebugInfo() || ExceptionHandling; }
+  
   /// NextLabelID - Return the next unique label id.
   ///
   unsigned NextLabelID() {