Fix and update comments and a small reformatting.

llvm-svn: 232997
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 4113472..410a939 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -1563,8 +1563,7 @@
     CmdArgs.push_back(Args.MakeArgString(Twine("-plugin-opt=mcpu=") + CPU));
 }
 
-static void getX86TargetFeatures(const Driver & D,
-                                 const llvm::Triple &Triple,
+static void getX86TargetFeatures(const Driver &D, const llvm::Triple &Triple,
                                  const ArgList &Args,
                                  std::vector<const char *> &Features) {
   if (Triple.getArchName() == "x86_64h") {
@@ -1578,7 +1577,7 @@
     Features.push_back("-fsgsbase");
   }
 
-  // Add features to comply with gcc on Android
+  // Add features to be compatible with gcc for Android.
   if (Triple.getEnvironment() == llvm::Triple::Android) {
     if (Triple.getArch() == llvm::Triple::x86_64) {
       Features.push_back("+sse4.2");
@@ -1587,7 +1586,7 @@
       Features.push_back("+ssse3");
   }
 
-  // Set features according to the -arch flag on MSVC
+  // Set features according to the -arch flag on MSVC.
   if (Arg *A = Args.getLastArg(options::OPT__SLASH_arch)) {
     StringRef Arch = A->getValue();
     bool ArchUsed = false;