[DebugInfo] Make AsmPrinter struct HandlerInfo and Handlers protected

In AsmPrinter, make struct HandlerInfo and SmallVector
Handlers protected, so target extended AsmPrinter will
be able to add their own handlers.

Signed-off-by: Yonghong Song <yhs@fb.com>

Differential Revision: https://reviews.llvm.org/D55756

llvm-svn: 349602

1 files changed, 3 insertions, 0 deletions

diff --git a/llvm/include/llvm/CodeGen/AsmPrinter.h b/llvm/include/llvm/CodeGen/AsmPrinter.h
index 301688836f7..413901d218f 100644
--- a/llvm/include/llvm/CodeGen/AsmPrinter.h
+++ b/llvm/include/llvm/CodeGen/AsmPrinter.h
@@ -138,6 +138,9 @@ private:
 
   static char ID;
 
+protected:
+  /// Protected struct HandlerInfo and Handlers permit target extended
+  /// AsmPrinter adds their own handlers.
   struct HandlerInfo {
     AsmPrinterHandler *Handler;
     const char *TimerName;