Use 'override/final' instead of 'virtual' for overridden methods

The patch is generated using clang-tidy misc-use-override check.

This command was used:

  tools/clang/tools/extra/clang-tidy/tool/run-clang-tidy.py \
    -checks='-*,misc-use-override' -header-filter='llvm|clang' \
    -j=32 -fix -format

http://reviews.llvm.org/D8925



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234679 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/MC/MCAsmInfoELF.h

@@ -15,8 +15,7 @@
 namespace llvm {
 class MCAsmInfoELF : public MCAsmInfo {
   virtual void anchor();
-  const MCSection *
-  getNonexecutableStackSection(MCContext &Ctx) const override final;
+  const MCSection *getNonexecutableStackSection(MCContext &Ctx) const final;
 
 protected:
   MCAsmInfoELF();

include/llvm/MC/MCAssembler.h

@@ -143,7 +143,7 @@ public:
     : MCFragment(FType, SD), BundlePadding(0)
   {
   }
-  virtual ~MCEncodedFragment();
+  ~MCEncodedFragment() override;
 
   virtual SmallVectorImpl<char> &getContents() = 0;
   virtual const SmallVectorImpl<char> &getContents() const = 0;
@@ -182,7 +182,7 @@ public:
   {
   }
 
-  virtual ~MCEncodedFragmentWithFixups();
+  ~MCEncodedFragmentWithFixups() override;
 
   typedef SmallVectorImpl<MCFixup>::const_iterator const_fixup_iterator;
   typedef SmallVectorImpl<MCFixup>::iterator fixup_iterator;

include/llvm/MC/MCELFStreamer.h

@@ -34,7 +34,7 @@ public:
       : MCObjectStreamer(Context, TAB, OS, Emitter),
         SeenIdent(false) {}
 
-  virtual ~MCELFStreamer();
+  ~MCELFStreamer() override;
 
   /// state management
   void reset() override {

include/llvm/MC/MCLinkerOptimizationHint.h

@@ -141,7 +141,7 @@ public:
 
     public:
       raw_counting_ostream() : Count(0) {}
-      ~raw_counting_ostream() { flush(); }
+      ~raw_counting_ostream() override { flush(); }
     };
 
     raw_counting_ostream OutStream;

include/llvm/MC/MCObjectStreamer.h

@@ -51,7 +51,7 @@ class MCObjectStreamer : public MCStreamer {
 protected:
   MCObjectStreamer(MCContext &Context, MCAsmBackend &TAB, raw_ostream &OS,
                    MCCodeEmitter *Emitter);
-  ~MCObjectStreamer();
+  ~MCObjectStreamer() override;
 
 public:
   /// state management

include/llvm/MC/MCParser/AsmLexer.h

@@ -40,7 +40,7 @@ protected:
 
 public:
   AsmLexer(const MCAsmInfo &MAI);
-  ~AsmLexer();
+  ~AsmLexer() override;
 
   void setBuffer(StringRef Buf, const char *ptr = nullptr);
 

include/llvm/MC/MCSectionCOFF.h

@@ -53,7 +53,7 @@ class MCSymbol;
       assert ((Characteristics & 0x00F00000) == 0 &&
         "alignment must not be set upon section creation");
     }
-    ~MCSectionCOFF();
+    ~MCSectionCOFF() override;
 
   public:
     /// ShouldOmitSectionDirective - Decides whether a '.section' directive

include/llvm/MC/MCSectionELF.h

@@ -59,7 +59,7 @@ private:
       : MCSection(SV_ELF, K, Begin), SectionName(Section), Type(type),
         Flags(flags), UniqueID(UniqueID), EntrySize(entrySize), Group(group),
         Associated(Associated) {}
-  ~MCSectionELF();
+  ~MCSectionELF() override;
 
   void setSectionName(StringRef Name) { SectionName = Name; }
 

include/llvm/MC/MCStreamer.h

@@ -90,7 +90,7 @@ public:
 class AArch64TargetStreamer : public MCTargetStreamer {
 public:
   AArch64TargetStreamer(MCStreamer &S);
-  ~AArch64TargetStreamer();
+  ~AArch64TargetStreamer() override;
 
   void finish() override;
 
@@ -115,7 +115,7 @@ private:
 class ARMTargetStreamer : public MCTargetStreamer {
 public:
   ARMTargetStreamer(MCStreamer &S);
-  ~ARMTargetStreamer();
+  ~ARMTargetStreamer() override;
 
   virtual void emitFnStart();
   virtual void emitFnEnd();

include/llvm/MC/MCTargetAsmParser.h

@@ -110,7 +110,7 @@ protected: // Can only create subclasses.
   MCTargetOptions MCOptions;
 
 public:
-  virtual ~MCTargetAsmParser();
+  ~MCTargetAsmParser() override;
 
   uint64_t getAvailableFeatures() const { return AvailableFeatures; }
   void setAvailableFeatures(uint64_t Value) { AvailableFeatures = Value; }