Fix uses of reserved identifiers starting with an underscore followed by an uppercase letter

This covers essentially all of llvm's headers and libs. One or two weird
cases I wasn't sure were worth/appropriate to fix.

llvm-svn: 232394
diff --git a/llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp b/llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
index 244d9d2..d38fc9a 100644
--- a/llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
+++ b/llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
@@ -113,11 +113,10 @@
 #define GET_OPERAND_DIAGNOSTIC_TYPES
 #include "AArch64GenAsmMatcher.inc"
   };
-  AArch64AsmParser(MCSubtargetInfo &_STI, MCAsmParser &_Parser,
-                 const MCInstrInfo &MII,
-                 const MCTargetOptions &Options)
-      : MCTargetAsmParser(), STI(_STI) {
-    MCAsmParserExtension::Initialize(_Parser);
+  AArch64AsmParser(MCSubtargetInfo &STI, MCAsmParser &Parser,
+                   const MCInstrInfo &MII, const MCTargetOptions &Options)
+      : MCTargetAsmParser(), STI(STI) {
+    MCAsmParserExtension::Initialize(Parser);
     MCStreamer &S = getParser().getStreamer();
     if (S.getTargetStreamer() == nullptr)
       new AArch64TargetStreamer(S);
@@ -254,8 +253,7 @@
   MCContext &Ctx;
 
 public:
-  AArch64Operand(KindTy K, MCContext &_Ctx)
-      : MCParsedAsmOperand(), Kind(K), Ctx(_Ctx) {}
+  AArch64Operand(KindTy K, MCContext &Ctx) : Kind(K), Ctx(Ctx) {}
 
   AArch64Operand(const AArch64Operand &o) : MCParsedAsmOperand(), Ctx(o.Ctx) {
     Kind = o.Kind;
diff --git a/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
index 59461e8..f7d397b 100644
--- a/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
+++ b/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
@@ -342,10 +342,10 @@
 
   };
 
-  ARMAsmParser(MCSubtargetInfo & _STI, MCAsmParser & _Parser,
+  ARMAsmParser(MCSubtargetInfo &STI, MCAsmParser &Parser,
                const MCInstrInfo &MII, const MCTargetOptions &Options)
-      : MCTargetAsmParser(), STI(_STI), MII(MII), UC(_Parser) {
-    MCAsmParserExtension::Initialize(_Parser);
+      : STI(STI), MII(MII), UC(Parser) {
+    MCAsmParserExtension::Initialize(Parser);
 
     // Cache the MCRegisterInfo.
     MRI = getContext().getRegisterInfo();
diff --git a/llvm/lib/Target/ARM/MCTargetDesc/ARMMCExpr.h b/llvm/lib/Target/ARM/MCTargetDesc/ARMMCExpr.h
index 06bf6c9..2be98d2 100644
--- a/llvm/lib/Target/ARM/MCTargetDesc/ARMMCExpr.h
+++ b/llvm/lib/Target/ARM/MCTargetDesc/ARMMCExpr.h
@@ -26,8 +26,8 @@
   const VariantKind Kind;
   const MCExpr *Expr;
 
-  explicit ARMMCExpr(VariantKind _Kind, const MCExpr *_Expr)
-    : Kind(_Kind), Expr(_Expr) {}
+  explicit ARMMCExpr(VariantKind Kind, const MCExpr *Expr)
+      : Kind(Kind), Expr(Expr) {}
 
 public:
   /// @name Construction
diff --git a/llvm/lib/Target/BPF/MCTargetDesc/BPFMCTargetDesc.cpp b/llvm/lib/Target/BPF/MCTargetDesc/BPFMCTargetDesc.cpp
index f82f009..0e8cd59 100644
--- a/llvm/lib/Target/BPF/MCTargetDesc/BPFMCTargetDesc.cpp
+++ b/llvm/lib/Target/BPF/MCTargetDesc/BPFMCTargetDesc.cpp
@@ -63,11 +63,10 @@
 
 static MCStreamer *createBPFMCStreamer(const Target &T, StringRef TT,
                                        MCContext &Ctx, MCAsmBackend &MAB,
-                                       raw_ostream &_OS,
-                                       MCCodeEmitter *_Emitter,
+                                       raw_ostream &OS, MCCodeEmitter *Emitter,
                                        const MCSubtargetInfo &STI,
                                        bool RelaxAll) {
-  return createELFStreamer(Ctx, MAB, _OS, _Emitter, RelaxAll);
+  return createELFStreamer(Ctx, MAB, OS, Emitter, RelaxAll);
 }
 
 static MCInstPrinter *
diff --git a/llvm/lib/Target/Mips/MCTargetDesc/MipsAsmBackend.h b/llvm/lib/Target/Mips/MCTargetDesc/MipsAsmBackend.h
index dd0e54c..243b73d 100644
--- a/llvm/lib/Target/Mips/MCTargetDesc/MipsAsmBackend.h
+++ b/llvm/lib/Target/Mips/MCTargetDesc/MipsAsmBackend.h
@@ -32,10 +32,9 @@
   bool Is64Bit;  // 32 or 64 bit words
 
 public:
-  MipsAsmBackend(const Target &T, Triple::OSType _OSType, bool _isLittle,
-                 bool _is64Bit)
-      : MCAsmBackend(), OSType(_OSType), IsLittle(_isLittle),
-        Is64Bit(_is64Bit) {}
+  MipsAsmBackend(const Target &T, Triple::OSType OSType, bool IsLittle,
+                 bool Is64Bit)
+      : MCAsmBackend(), OSType(OSType), IsLittle(IsLittle), Is64Bit(Is64Bit) {}
 
   MCObjectWriter *createObjectWriter(raw_ostream &OS) const override;
 
diff --git a/llvm/lib/Target/NVPTX/NVPTXAsmPrinter.h b/llvm/lib/Target/NVPTX/NVPTXAsmPrinter.h
index 7e6b5e8..9b11e70 100644
--- a/llvm/lib/Target/NVPTX/NVPTXAsmPrinter.h
+++ b/llvm/lib/Target/NVPTX/NVPTXAsmPrinter.h
@@ -92,8 +92,8 @@
     bool EmitGeneric;
 
   public:
-    AggBuffer(unsigned _size, raw_ostream &_O, NVPTXAsmPrinter &_AP)
-        : size(_size), buffer(_size), O(_O), AP(_AP) {
+    AggBuffer(unsigned size, raw_ostream &O, NVPTXAsmPrinter &AP)
+        : size(size), buffer(size), O(O), AP(AP) {
       curpos = 0;
       numSymbols = 0;
       EmitGeneric = AP.EmitGeneric;
diff --git a/llvm/lib/Target/NVPTX/NVPTXMCExpr.h b/llvm/lib/Target/NVPTX/NVPTXMCExpr.h
index d39a394..f075b8b 100644
--- a/llvm/lib/Target/NVPTX/NVPTXMCExpr.h
+++ b/llvm/lib/Target/NVPTX/NVPTXMCExpr.h
@@ -29,8 +29,8 @@
   const VariantKind Kind;
   const APFloat Flt;
 
-  explicit NVPTXFloatMCExpr(VariantKind _Kind, APFloat _Flt)
-    : Kind(_Kind), Flt(_Flt) {}
+  explicit NVPTXFloatMCExpr(VariantKind Kind, APFloat Flt)
+      : Kind(Kind), Flt(Flt) {}
 
 public:
   /// @name Construction
diff --git a/llvm/lib/Target/PowerPC/AsmParser/PPCAsmParser.cpp b/llvm/lib/Target/PowerPC/AsmParser/PPCAsmParser.cpp
index c164f32..9e2d9ac 100644
--- a/llvm/lib/Target/PowerPC/AsmParser/PPCAsmParser.cpp
+++ b/llvm/lib/Target/PowerPC/AsmParser/PPCAsmParser.cpp
@@ -271,9 +271,9 @@
 
 
 public:
-  PPCAsmParser(MCSubtargetInfo &_STI, MCAsmParser &_Parser,
-               const MCInstrInfo &_MII, const MCTargetOptions &Options)
-      : MCTargetAsmParser(), STI(_STI), MII(_MII) {
+  PPCAsmParser(MCSubtargetInfo &STI, MCAsmParser &, const MCInstrInfo &MII,
+               const MCTargetOptions &Options)
+      : MCTargetAsmParser(), STI(STI), MII(MII) {
     // Check for 64-bit vs. 32-bit pointer mode.
     Triple TheTriple(STI.getTargetTriple());
     IsPPC64 = (TheTriple.getArch() == Triple::ppc64 ||
diff --git a/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCExpr.h b/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCExpr.h
index f0a6bb9..1c840d9 100644
--- a/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCExpr.h
+++ b/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCExpr.h
@@ -36,9 +36,8 @@
 
   int64_t EvaluateAsInt64(int64_t Value) const;
 
-  explicit PPCMCExpr(VariantKind _Kind, const MCExpr *_Expr,
-                     bool _IsDarwin)
-    : Kind(_Kind), Expr(_Expr), IsDarwin(_IsDarwin) {}
+  explicit PPCMCExpr(VariantKind Kind, const MCExpr *Expr, bool IsDarwin)
+      : Kind(Kind), Expr(Expr), IsDarwin(IsDarwin) {}
 
 public:
   /// @name Construction
diff --git a/llvm/lib/Target/R600/AsmParser/AMDGPUAsmParser.cpp b/llvm/lib/Target/R600/AsmParser/AMDGPUAsmParser.cpp
index 3b4ba1a..49f0f23 100644
--- a/llvm/lib/Target/R600/AsmParser/AMDGPUAsmParser.cpp
+++ b/llvm/lib/Target/R600/AsmParser/AMDGPUAsmParser.cpp
@@ -46,10 +46,9 @@
   /// }
 
 public:
-  AMDGPUAsmParser(MCSubtargetInfo &_STI, MCAsmParser &_Parser,
-               const MCInstrInfo &_MII,
-               const MCTargetOptions &Options)
-      : MCTargetAsmParser(), STI(_STI), Parser(_Parser) {
+  AMDGPUAsmParser(MCSubtargetInfo &STI, MCAsmParser &Parser,
+                  const MCInstrInfo &MII, const MCTargetOptions &Options)
+      : MCTargetAsmParser(), STI(STI), Parser(Parser) {
     setAvailableFeatures(ComputeAvailableFeatures(STI.getFeatureBits()));
   }
   bool ParseRegister(unsigned &RegNo, SMLoc &StartLoc, SMLoc &EndLoc) override;
diff --git a/llvm/lib/Target/R600/MCTargetDesc/AMDGPUMCTargetDesc.cpp b/llvm/lib/Target/R600/MCTargetDesc/AMDGPUMCTargetDesc.cpp
index d89924a..9761211 100644
--- a/llvm/lib/Target/R600/MCTargetDesc/AMDGPUMCTargetDesc.cpp
+++ b/llvm/lib/Target/R600/MCTargetDesc/AMDGPUMCTargetDesc.cpp
@@ -75,9 +75,9 @@
 
 static MCStreamer *createMCStreamer(const Target &T, StringRef TT,
                                     MCContext &Ctx, MCAsmBackend &MAB,
-                                    raw_ostream &_OS, MCCodeEmitter *_Emitter,
+                                    raw_ostream &OS, MCCodeEmitter *Emitter,
                                     const MCSubtargetInfo &STI, bool RelaxAll) {
-  return createELFStreamer(Ctx, MAB, _OS, _Emitter, false);
+  return createELFStreamer(Ctx, MAB, OS, Emitter, false);
 }
 
 extern "C" void LLVMInitializeR600TargetMC() {
diff --git a/llvm/lib/Target/Sparc/MCTargetDesc/SparcMCExpr.h b/llvm/lib/Target/Sparc/MCTargetDesc/SparcMCExpr.h
index f72c6c4..3a6f508 100644
--- a/llvm/lib/Target/Sparc/MCTargetDesc/SparcMCExpr.h
+++ b/llvm/lib/Target/Sparc/MCTargetDesc/SparcMCExpr.h
@@ -62,8 +62,8 @@
   const VariantKind Kind;
   const MCExpr *Expr;
 
-  explicit SparcMCExpr(VariantKind _Kind, const MCExpr *_Expr)
-    : Kind(_Kind), Expr(_Expr) {}
+  explicit SparcMCExpr(VariantKind Kind, const MCExpr *Expr)
+      : Kind(Kind), Expr(Expr) {}
 
 public:
   /// @name Construction
diff --git a/llvm/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp b/llvm/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp
index 719b761..a400d46 100644
--- a/llvm/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp
+++ b/llvm/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp
@@ -76,8 +76,8 @@
   bool HasNopl;
   const uint64_t MaxNopLength;
 public:
-  X86AsmBackend(const Target &T, StringRef _CPU)
-    : MCAsmBackend(), CPU(_CPU), MaxNopLength(_CPU == "slm" ? 7 : 15) {
+  X86AsmBackend(const Target &T, StringRef CPU)
+      : MCAsmBackend(), CPU(CPU), MaxNopLength(CPU == "slm" ? 7 : 15) {
     HasNopl = CPU != "generic" && CPU != "i386" && CPU != "i486" &&
               CPU != "i586" && CPU != "pentium" && CPU != "pentium-mmx" &&
               CPU != "i686" && CPU != "k6" && CPU != "k6-2" && CPU != "k6-3" &&
@@ -351,8 +351,8 @@
 class ELFX86AsmBackend : public X86AsmBackend {
 public:
   uint8_t OSABI;
-  ELFX86AsmBackend(const Target &T, uint8_t _OSABI, StringRef CPU)
-      : X86AsmBackend(T, CPU), OSABI(_OSABI) {}
+  ELFX86AsmBackend(const Target &T, uint8_t OSABI, StringRef CPU)
+      : X86AsmBackend(T, CPU), OSABI(OSABI) {}
 };
 
 class ELFX86_32AsmBackend : public ELFX86AsmBackend {
diff --git a/llvm/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.cpp b/llvm/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.cpp
index 0e7b4e5..0e7f572 100644
--- a/llvm/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.cpp
+++ b/llvm/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.cpp
@@ -346,19 +346,19 @@
 
 static MCStreamer *createMCStreamer(const Target &T, StringRef TT,
                                     MCContext &Ctx, MCAsmBackend &MAB,
-                                    raw_ostream &_OS, MCCodeEmitter *_Emitter,
+                                    raw_ostream &OS, MCCodeEmitter *Emitter,
                                     const MCSubtargetInfo &STI, bool RelaxAll) {
   Triple TheTriple(TT);
 
   switch (TheTriple.getObjectFormat()) {
   default: llvm_unreachable("unsupported object format");
   case Triple::MachO:
-    return createMachOStreamer(Ctx, MAB, _OS, _Emitter, RelaxAll);
+    return createMachOStreamer(Ctx, MAB, OS, Emitter, RelaxAll);
   case Triple::COFF:
     assert(TheTriple.isOSWindows() && "only Windows COFF is supported");
-    return createX86WinCOFFStreamer(Ctx, MAB, _Emitter, _OS, RelaxAll);
+    return createX86WinCOFFStreamer(Ctx, MAB, Emitter, OS, RelaxAll);
   case Triple::ELF:
-    return createELFStreamer(Ctx, MAB, _OS, _Emitter, RelaxAll);
+    return createELFStreamer(Ctx, MAB, OS, Emitter, RelaxAll);
   }
 }