[WinEH] Teach AsmPrinter about funclets

Summary:
Funclets have been turned into functions by the time they hit the object
file.  Make sure that they have decent names for the symbol table and
CFI directives explaining how to reason about their prologues.

Differential Revision: http://reviews.llvm.org/D13261

llvm-svn: 248824

1 files changed, 6 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/AsmPrinter/AsmPrinterHandler.h b/llvm/lib/CodeGen/AsmPrinter/AsmPrinterHandler.h
index f1efe9d835e..e59961f8576 100644
--- a/llvm/lib/CodeGen/AsmPrinter/AsmPrinterHandler.h
+++ b/llvm/lib/CodeGen/AsmPrinter/AsmPrinterHandler.h
@@ -19,6 +19,7 @@
 
 namespace llvm {
 
+class MachineBasicBlock;
 class MachineFunction;
 class MachineInstr;
 class MCSymbol;
@@ -50,6 +51,11 @@ public:
   /// beginFunction at all.
   virtual void endFunction(const MachineFunction *MF) = 0;
 
+  /// \brief Emit target-specific EH funclet machinery.
+  virtual void beginFunclet(const MachineBasicBlock &MBB,
+                            MCSymbol *Sym = nullptr) {}
+  virtual void endFunclet() {}
+
   /// \brief Process beginning of an instruction.
   virtual void beginInstruction(const MachineInstr *MI) = 0;