Update DataLayout/DescriptionString for ppc64le
Update DataLayout/DescriptionString for ppc64le

Similar LLVM change made in r203664

Testcase included.

llvm-svn: 204613
diff --git a/clang/lib/Basic/Targets.cpp b/clang/lib/Basic/Targets.cpp
index 1030a8c..0e1292d 100644
--- a/clang/lib/Basic/Targets.cpp
+++ b/clang/lib/Basic/Targets.cpp
@@ -1245,8 +1245,13 @@
       LongDoubleWidth = LongDoubleAlign = 64;
       LongDoubleFormat = &llvm::APFloat::IEEEdouble;
       DescriptionString = "E-m:e-i64:64-n32:64";
-    } else
-      DescriptionString = "E-m:e-i64:64-n32:64";
+    } else {
+      if ((Triple.getArch() == llvm::Triple::ppc64le)) {
+        DescriptionString = "e-m:e-i64:64-n32:64";
+      } else {
+        DescriptionString = "E-m:e-i64:64-n32:64";
+      }
+}
 
     // PPC64 supports atomics up to 8 bytes.
     MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 64;