the x86 version of the name is x86-64, not x86_64.  Handle this properly
in getArchTypeForLLVMName.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78799 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/Triple.cpp b/lib/Support/Triple.cpp
index a81fb5b..65af296 100644
--- a/lib/Support/Triple.cpp
+++ b/lib/Support/Triple.cpp
@@ -99,7 +99,7 @@
     return thumb;
   if (Name == "x86")
     return x86;
-  if (Name == "x86_64")
+  if (Name == "x86-64")
     return x86_64;
   if (Name == "xcore")
     return xcore;