Address review comments by MForster.

Author: martinboehme

lib/Driver/DarwinToolChains.cpp

@@ -713,7 +713,7 @@ toolchains::Darwin::constructInvocation(const DynamicLinkJobAction &job,
   Arguments.push_back(context.Args.MakeArgString(getTriple().getArchName()));
 
   if (context.cxxInteropEnabled()) {
-    // We only support libc++ on Darwin.
+    // On Darwin, we only support libc++.
     Arguments.push_back("-lc++");
   }
 

lib/Driver/UnixToolChains.cpp

@@ -182,8 +182,6 @@ toolchains::GenericUnix::constructInvocation(const DynamicLinkJobAction &job,
 
   // Configure the toolchain.
   //
-  // We use `clang++` if C++ interop is enabled, `clang` otherwise.
-  //
   // We don't use `clang++` unconditionally because we want to avoid pulling in
   // a C++ standard library if it's not needed, in particular because the
   // standard library that `clang++` selects by default may not be the one that

lib/Driver/WindowsToolChains.cpp

@@ -85,8 +85,6 @@ toolchains::Windows::constructInvocation(const DynamicLinkJobAction &job,
   }
 
   // Configure the toolchain.
-  //
-  // We use `clang++` if C++ interop is enabled, `clang` otherwise.
   const char *Clang = context.cxxInteropEnabled()? "clang++" : "clang";
   if (const Arg *A = context.Args.getLastArg(options::OPT_tools_directory)) {
     StringRef toolchainPath(A->getValue());