Add CFI directives-based frame information emission. Not hooked yet.

llvm-svn: 123474

1 files changed, 31 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfException.h b/llvm/lib/CodeGen/AsmPrinter/DwarfException.h
index adfbc8595bf..a172e53f8ac 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfException.h
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfException.h
@@ -139,6 +139,37 @@ public:
   virtual void EndFunction();
 };
 
+class DwarfCFIException : public DwarfException {
+  /// shouldEmitTable - Per-function flag to indicate if EH tables should
+  /// be emitted.
+  bool shouldEmitTable;
+
+  /// shouldEmitMoves - Per-function flag to indicate if frame moves info
+  /// should be emitted.
+  bool shouldEmitMoves;
+
+  /// shouldEmitTableModule - Per-module flag to indicate if EH tables
+  /// should be emitted.
+  bool shouldEmitTableModule;
+public:
+  //===--------------------------------------------------------------------===//
+  // Main entry points.
+  //
+  DwarfCFIException(AsmPrinter *A);
+  virtual ~DwarfCFIException();
+
+  /// EndModule - Emit all exception information that should come after the
+  /// content.
+  virtual void EndModule();
+
+  /// BeginFunction - Gather pre-function exception information.  Assumes being
+  /// emitted immediately after the function entry point.
+  virtual void BeginFunction(const MachineFunction *MF);
+
+  /// EndFunction - Gather and emit post-function exception information.
+  virtual void EndFunction();
+};
+
 class DwarfTableException : public DwarfException {
   /// shouldEmitTable - Per-function flag to indicate if EH tables should
   /// be emitted.