Driver: pass -target immediately after clang++ (NFC)

This just adjusts the command invocation for the driver.  It makes it
clear that the `clang` invocation was correct.

Author: compnerd

lib/Driver/UnixToolChains.cpp

@@ -121,6 +121,12 @@ toolchains::GenericUnix::constructInvocation(const DynamicLinkJobAction &job,
 
   ArgStringList Arguments;
 
+  std::string Target = getTargetForLinker();
+  if (!Target.empty()) {
+    Arguments.push_back("-target");
+    Arguments.push_back(context.Args.MakeArgString(Target));
+  }
+
   switch (job.getKind()) {
   case LinkKind::None:
     llvm_unreachable("invalid link kind");
@@ -173,12 +179,6 @@ toolchains::GenericUnix::constructInvocation(const DynamicLinkJobAction &job,
     Arguments.push_back("-pie");
   }
 
-  std::string Target = getTargetForLinker();
-  if (!Target.empty()) {
-    Arguments.push_back("-target");
-    Arguments.push_back(context.Args.MakeArgString(Target));
-  }
-
   bool staticExecutable = false;
   bool staticStdlib = false;