Preparation step for some cleanup/generalization in EH information emission:
provide TAI hook for selection of EH data emission format. Currently unused.

llvm-svn: 47699
diff --git a/llvm/lib/Target/TargetAsmInfo.cpp b/llvm/lib/Target/TargetAsmInfo.cpp
index bcc2f6e..f66d0ff 100644
--- a/llvm/lib/Target/TargetAsmInfo.cpp
+++ b/llvm/lib/Target/TargetAsmInfo.cpp
@@ -13,6 +13,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Target/TargetAsmInfo.h"
+#include "llvm/Support/Dwarf.h"
 #include <cctype>
 #include <cstring>
 
@@ -134,3 +135,8 @@
   return Length;
 }
 
+unsigned TargetAsmInfo::PreferredEHDataFormat(unsigned Reason,
+                                              bool Global) const {
+  return dwarf::DW_EH_PE_absptr;
+}
+