2 files changed, 7 insertions, 1 deletions
diff --git a/lib/Basic/TargetInfo.cpp b/lib/Basic/TargetInfo.cpp
index 7c42a80d1b..6d42883cd1 100644
--- a/lib/Basic/TargetInfo.cpp
+++ b/lib/Basic/TargetInfo.cpp
@@ -58,6 +58,9 @@ TargetInfo::TargetInfo(const std::string &T) : Triple(T) {
 
   // Default to no types using fpret.
   RealTypeUsesObjCFPRet = 0;
+
+  // Default to using the Itanium ABI.
+  CXXABI = CXXABI_Itanium;
 }
 
 // Out of line virtual dtor for TargetInfo.
diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index 9dcb61eca8..cabe50a560 100644
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -1585,6 +1585,9 @@ public:
                            "i64:64:64-f32:32:32-f64:64:64-"
                            "v64:64:64-v128:128:128-a0:0:64-n32");
     }
+
+    // ARM targets default to using the ARM C++ ABI.
+    CXXABI = CXXABI_ARM;
   }
   virtual const char *getABI() const { return ABI.c_str(); }
   virtual bool setABI(const std::string &Name) {
@@ -2631,7 +2634,7 @@ TargetInfo *TargetInfo::CreateTargetInfo(Diagnostic &Diags,
   }
 
   // Set the target C++ ABI.
-  if (!Target->setCXXABI(Opts.CXXABI)) {
+  if (!Opts.CXXABI.empty() && !Target->setCXXABI(Opts.CXXABI)) {
     Diags.Report(diag::err_target_unknown_cxxabi) << Opts.CXXABI;
     return 0;
   }