Replace string GNU Triples with llvm::Triple in TargetMachine. NFC.

Summary:
For the moment, TargetMachine::getTargetTriple() still returns a StringRef.

This continues the patch series to eliminate StringRef forms of GNU triples
from the internals of LLVM that began in r239036.

Reviewers: rengolin

Reviewed By: rengolin

Subscribers: ted, llvm-commits, rengolin, jholewinski

Differential Revision: http://reviews.llvm.org/D10362

llvm-svn: 239554
diff --git a/llvm/lib/Target/CppBackend/CPPTargetMachine.h b/llvm/lib/Target/CppBackend/CPPTargetMachine.h
index 02d705e..f7d0e18 100644
--- a/llvm/lib/Target/CppBackend/CPPTargetMachine.h
+++ b/llvm/lib/Target/CppBackend/CPPTargetMachine.h
@@ -23,8 +23,8 @@
 class formatted_raw_ostream;
 
 struct CPPTargetMachine : public TargetMachine {
-  CPPTargetMachine(const Target &T, StringRef TT, StringRef CPU, StringRef FS,
-                   const TargetOptions &Options, Reloc::Model RM,
+  CPPTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
+                   StringRef FS, const TargetOptions &Options, Reloc::Model RM,
                    CodeModel::Model CM, CodeGenOpt::Level OL)
       : TargetMachine(T, "", TT, CPU, FS, Options) {}