Capitalize comment.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@160220 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGBuiltin.cpp b/lib/CodeGen/CGBuiltin.cpp
index d8fdad6..dd04a46 100644
--- a/lib/CodeGen/CGBuiltin.cpp
+++ b/lib/CodeGen/CGBuiltin.cpp
@@ -1629,7 +1629,7 @@
   }
   case ARM::BI__builtin_neon_vclz_v:
   case ARM::BI__builtin_neon_vclzq_v: {
-    // generate target-independent intrinsic; also need to add second argument
+    // Generate target-independent intrinsic; also need to add second argument
     // for whether or not clz of zero is undefined; on ARM it isn't.
     Function *F = CGM.getIntrinsic(Intrinsic::ctlz, Ty);
     Ops.push_back(Builder.getInt1(Target.isCLZForZeroUndef()));