!fixup add/adjust comments, thanks!

Author: fhahn

llvm/lib/Transforms/Vectorize/VPlan.h

@@ -3704,6 +3704,7 @@ class VPlan {
   /// Return the live-in VPValue for \p V, if there is one or nullptr otherwise.
   VPValue *getLiveIn(Value *V) const { return Value2VPValue.lookup(V); }
 
+  /// Return the list of live-in VPValues available in the VPlan.
   ArrayRef<VPValue *> getLiveIns() const { return VPLiveInsToFree; }
 
 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)

llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp

@@ -2137,7 +2137,7 @@ void VPlanTransforms::materializeBroadcasts(VPlan &Plan) {
       continue;
 
     // Add explicit broadcast if the vector preheader dominates all users.
-    // TODO: Find valid inert point for all users.
+    // TODO: Find valid insert point for all users.
     if (all_of(LiveIn->users(), [&VPDT, VectorPreheader](VPUser *U) {
           return VectorPreheader != cast<VPRecipeBase>(U)->getParent() &&
                  VPDT.dominates(VectorPreheader,