Index: lib/Driver/ToolChains/Gnu.cpp
===================================================================
--- lib/Driver/ToolChains/Gnu.cpp
+++ lib/Driver/ToolChains/Gnu.cpp
@@ -2367,7 +2367,9 @@
 }
 
 bool Generic_GCC::IsUnwindTablesDefault(const ArgList &Args) const {
-  return getArch() == llvm::Triple::x86_64;
+  return getArch() == llvm::Triple::x86_64 ||
+          getArch() == llvm::Triple::ppc64 ||
+          getArch() == llvm::Triple::ppc64le;
 }
 
 bool Generic_GCC::isPICDefault() const {