Update clang to r339409.

Change-Id: I800772d2d838223be1f6b40d490c4591b937fca2
diff --git a/linux-x64/clang/include/llvm/IR/Statepoint.h b/linux-x64/clang/include/llvm/IR/Statepoint.h
index a87f67c..8908e1b 100644
--- a/linux-x64/clang/include/llvm/IR/Statepoint.h
+++ b/linux-x64/clang/include/llvm/IR/Statepoint.h
@@ -196,7 +196,7 @@
     return make_range(arg_begin(), arg_end());
   }
 
-  /// \brief Return true if the call or the callee has the given attribute.
+  /// Return true if the call or the callee has the given attribute.
   bool paramHasAttr(unsigned i, Attribute::AttrKind A) const {
     Function *F = getCalledFunction();
     return getCallSite().paramHasAttr(i + CallArgsBeginPos, A) ||
@@ -325,7 +325,7 @@
   explicit Statepoint(CallSite CS) : Base(CS) {}
 };
 
-/// Common base class for representing values projected from a statepoint.  
+/// Common base class for representing values projected from a statepoint.
 /// Currently, the only projections available are gc.result and gc.relocate.
 class GCProjectionInst : public IntrinsicInst {
 public: