Driver: Push triple objects around instead of going to std::string all the time.

No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185261 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Basic/TargetInfo.cpp b/lib/Basic/TargetInfo.cpp
index 0d44dc0..f8c10d1 100644
--- a/lib/Basic/TargetInfo.cpp
+++ b/lib/Basic/TargetInfo.cpp
@@ -24,8 +24,7 @@
 static const LangAS::Map DefaultAddrSpaceMap = { 0 };
 
 // TargetInfo Constructor.
-TargetInfo::TargetInfo(const std::string &T) : TargetOpts(), Triple(T)
-{
+TargetInfo::TargetInfo(const llvm::Triple &T) : TargetOpts(), Triple(T) {
   // Set defaults.  Defaults are set for a 32-bit RISC platform, like PPC or
   // SPARC.  These should be overridden by concrete targets as needed.
   BigEndian = true;