Ensure sys::getProcessTriple always uses a normalized triple.  Patch by
Thomas B. Jablin, from PR16636.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186501 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/Host.cpp b/lib/Support/Host.cpp
index 20942a5..40e7a49 100644
--- a/lib/Support/Host.cpp
+++ b/lib/Support/Host.cpp
@@ -603,7 +603,7 @@
 #endif
 
 std::string sys::getProcessTriple() {
-  Triple PT(LLVM_HOST_TRIPLE);
+  Triple PT(Triple::normalize(LLVM_HOST_TRIPLE));
 
   if (sizeof(void *) == 8 && PT.isArch32Bit())
     PT = PT.get64BitArchVariant();