Enable -fuse-init-array for all AArch64 ELF targets by default, not just linux.

llvm-svn: 198940
diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index 745497f..d828404 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -1992,6 +1992,10 @@
         TC = new toolchains::XCore(*this, Target, Args);
         break;
       }
+      if (Target.isOSBinFormatELF()) {
+        TC = new toolchains::Generic_ELF(*this, Target, Args);
+        break;
+      }
       TC = new toolchains::Generic_GCC(*this, Target, Args);
       break;
     }