Standardize accesses to the TargetInfo in IR-gen.

Patch by Stephen Lin!

llvm-svn: 179638
diff --git a/clang/lib/CodeGen/CodeGenFunction.h b/clang/lib/CodeGen/CodeGenFunction.h
index 941eebe..f4ac086 100644
--- a/clang/lib/CodeGen/CodeGenFunction.h
+++ b/clang/lib/CodeGen/CodeGenFunction.h
@@ -1300,6 +1300,7 @@
     return getInvokeDestImpl();
   }
 
+  const TargetInfo &getTarget() const { return Target; }
   llvm::LLVMContext &getLLVMContext() { return CGM.getLLVMContext(); }
 
   //===--------------------------------------------------------------------===//