[DeadArgElim] Reformat the pass in accordance with the code style

The code has been reformatted in accordance with the code style. Some
function comments were extended to the Doxygen ones and reworded a bit
to eliminate the duplication of the function's/class' name in the
comment.

Differential Revision: https://reviews.llvm.org/D128168

Author: samolisov

llvm/include/llvm/Transforms/IPO/DeadArgumentElimination.h

@@ -66,25 +66,24 @@ class DeadArgumentEliminationPass
     }
   };
 
-  /// Liveness enum - During our initial pass over the program, we determine
-  /// that things are either alive or maybe alive. We don't mark anything
-  /// explicitly dead (even if we know they are), since anything not alive
-  /// with no registered uses (in Uses) will never be marked alive and will
-  /// thus become dead in the end.
+  /// During our initial pass over the program, we determine that things are
+  /// either alive or maybe alive. We don't mark anything explicitly dead (even
+  /// if we know they are), since anything not alive with no registered uses
+  /// (in Uses) will never be marked alive and will thus become dead in the end.
   enum Liveness { Live, MaybeLive };
 
-  DeadArgumentEliminationPass(bool ShouldHackArguments_ = false)
-      : ShouldHackArguments(ShouldHackArguments_) {}
+  DeadArgumentEliminationPass(bool ShouldHackArguments = false)
+      : ShouldHackArguments(ShouldHackArguments) {}
 
   PreservedAnalyses run(Module &M, ModuleAnalysisManager &);
 
   /// Convenience wrapper
-  RetOrArg CreateRet(const Function *F, unsigned Idx) {
+  RetOrArg createRet(const Function *F, unsigned Idx) {
     return RetOrArg(F, Idx, false);
   }
 
   /// Convenience wrapper
-  RetOrArg CreateArg(const Function *F, unsigned Idx) {
+  RetOrArg createArg(const Function *F, unsigned Idx) {
     return RetOrArg(F, Idx, true);
   }
 
@@ -122,21 +121,21 @@ class DeadArgumentEliminationPass
   bool ShouldHackArguments = false;
 
 private:
-  Liveness MarkIfNotLive(RetOrArg Use, UseVector &MaybeLiveUses);
-  Liveness SurveyUse(const Use *U, UseVector &MaybeLiveUses,
+  Liveness markIfNotLive(RetOrArg Use, UseVector &MaybeLiveUses);
+  Liveness surveyUse(const Use *U, UseVector &MaybeLiveUses,
                      unsigned RetValNum = -1U);
-  Liveness SurveyUses(const Value *V, UseVector &MaybeLiveUses);
+  Liveness surveyUses(const Value *V, UseVector &MaybeLiveUses);
 
-  void SurveyFunction(const Function &F);
-  bool IsLive(const RetOrArg &RA);
-  void MarkValue(const RetOrArg &RA, Liveness L,
+  void surveyFunction(const Function &F);
+  bool isLive(const RetOrArg &RA);
+  void markValue(const RetOrArg &RA, Liveness L,
                  const UseVector &MaybeLiveUses);
-  void MarkLive(const RetOrArg &RA);
-  void MarkLive(const Function &F);
-  void PropagateLiveness(const RetOrArg &RA);
-  bool RemoveDeadStuffFromFunction(Function *F);
-  bool DeleteDeadVarargs(Function &Fn);
-  bool RemoveDeadArgumentsFromCallers(Function &Fn);
+  void markLive(const RetOrArg &RA);
+  void markLive(const Function &F);
+  void propagateLiveness(const RetOrArg &RA);
+  bool removeDeadStuffFromFunction(Function *F);
+  bool deleteDeadVarargs(Function &F);
+  bool removeDeadArgumentsFromCallers(Function &F);
 };
 
 } // end namespace llvm