[LLVM] Fix some Clang-tidy modernize-use-default and Include What You Use warnings in examples; other minor fixes

[Eugene.Zelenko]

Summary

Also replaced obsolete bzero()/bcopy() with memset()/memcpy().

[Eugene.Zelenko]

Ping.

[hans]

lgtm

examples/Kaleidoscope/BuildingAJIT/Chapter1/KaleidoscopeJIT.h

JITSymbol findSymbol(const std::string Name) {
     raw_string_ostream MangledNameStream(MangledName);
     Mangler::getNameWithPrefix(MangledNameStream, Name, DL);
     return CompileLayer.findSymbol(MangledNameStream.str(), true);
   }
 
   void removeModule(ModuleHandle H) {
     CompileLayer.removeModuleSet(H);
   }
-
 };
 
 } // end namespace orc
 } // end namespace llvm
 
 #endif // LLVM_EXECUTIONENGINE_ORC_KALEIDOSCOPEJIT_H

examples/Kaleidoscope/BuildingAJIT/Chapter1/toy.cpp

 #include "llvm/ADT/APFloat.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/IR/BasicBlock.h"
 #include "llvm/IR/Constants.h"
 #include "llvm/IR/DerivedTypes.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/IRBuilder.h"
 #include "llvm/IR/LLVMContext.h"
-#include "llvm/IR/LegacyPassManager.h"
 #include "llvm/IR/Module.h"
 #include "llvm/IR/Type.h"
 #include "llvm/IR/Verifier.h"
 #include "llvm/Support/TargetSelect.h"
 #include "llvm/Target/TargetMachine.h"
-#include "llvm/Transforms/Scalar.h"
-#include "llvm/Transforms/Scalar/GVN.h"
 #include "KaleidoscopeJIT.h"
+#include <algorithm>
 #include <cassert>
 #include <cctype>
 #include <cstdint>
 #include <cstdio>
 #include <cstdlib>
 #include <map>
 #include <memory>
 #include <string>
static int gettok() {
   int ThisChar = LastChar;
   LastChar = getchar();
   return ThisChar;
 }
 
 //===----------------------------------------------------------------------===//
 // Abstract Syntax Tree (aka Parse Tree)
 //===----------------------------------------------------------------------===//
+
 namespace {
+
 /// ExprAST - Base class for all expression nodes.
 class ExprAST {
 public:
-  virtual ~ExprAST() {}
+  virtual ~ExprAST() = default;
+
   virtual Value *codegen() = 0;
 };
 
 /// NumberExprAST - Expression class for numeric literals like "1.0".
 class NumberExprAST : public ExprAST {
   double Val;
 
 public:
   NumberExprAST(double Val) : Val(Val) {}
+
   Value *codegen() override;
 };
 
 /// VariableExprAST - Expression class for referencing a variable, like "a".
 class VariableExprAST : public ExprAST {
   std::string Name;
 
 public:
   VariableExprAST(const std::string &Name) : Name(Name) {}
-  const std::string &getName() const { return Name; }
+
   Value *codegen() override;
+  const std::string &getName() const { return Name; }
 };
 
 /// UnaryExprAST - Expression class for a unary operator.
 class UnaryExprAST : public ExprAST {
   char Opcode;
   std::unique_ptr<ExprAST> Operand;
 
 public:
   UnaryExprAST(char Opcode, std::unique_ptr<ExprAST> Operand)
       : Opcode(Opcode), Operand(std::move(Operand)) {}
+
   Value *codegen() override;
 };
 
 /// BinaryExprAST - Expression class for a binary operator.
 class BinaryExprAST : public ExprAST {
   char Op;
   std::unique_ptr<ExprAST> LHS, RHS;
 
 public:
   BinaryExprAST(char Op, std::unique_ptr<ExprAST> LHS,
                 std::unique_ptr<ExprAST> RHS)
       : Op(Op), LHS(std::move(LHS)), RHS(std::move(RHS)) {}
+
   Value *codegen() override;
 };
 
 /// CallExprAST - Expression class for function calls.
 class CallExprAST : public ExprAST {
   std::string Callee;
   std::vector<std::unique_ptr<ExprAST>> Args;
 
 public:
   CallExprAST(const std::string &Callee,
               std::vector<std::unique_ptr<ExprAST>> Args)
       : Callee(Callee), Args(std::move(Args)) {}
+
   Value *codegen() override;
 };
 
 /// IfExprAST - Expression class for if/then/else.
 class IfExprAST : public ExprAST {
   std::unique_ptr<ExprAST> Cond, Then, Else;
 
 public:
   IfExprAST(std::unique_ptr<ExprAST> Cond, std::unique_ptr<ExprAST> Then,
             std::unique_ptr<ExprAST> Else)
       : Cond(std::move(Cond)), Then(std::move(Then)), Else(std::move(Else)) {}
+
   Value *codegen() override;
 };
 
 /// ForExprAST - Expression class for for/in.
 class ForExprAST : public ExprAST {
   std::string VarName;
   std::unique_ptr<ExprAST> Start, End, Step, Body;
 
 public:
   ForExprAST(const std::string &VarName, std::unique_ptr<ExprAST> Start,
              std::unique_ptr<ExprAST> End, std::unique_ptr<ExprAST> Step,
              std::unique_ptr<ExprAST> Body)
       : VarName(VarName), Start(std::move(Start)), End(std::move(End)),
         Step(std::move(Step)), Body(std::move(Body)) {}
+
   Value *codegen() override;
 };
 
 /// VarExprAST - Expression class for var/in
 class VarExprAST : public ExprAST {
   std::vector<std::pair<std::string, std::unique_ptr<ExprAST>>> VarNames;
   std::unique_ptr<ExprAST> Body;
 
 public:
   VarExprAST(
       std::vector<std::pair<std::string, std::unique_ptr<ExprAST>>> VarNames,
       std::unique_ptr<ExprAST> Body)
       : VarNames(std::move(VarNames)), Body(std::move(Body)) {}
+
   Value *codegen() override;
 };
 
 /// PrototypeAST - This class represents the "prototype" for a function,
 /// which captures its name, and its argument names (thus implicitly the number
 /// of arguments the function takes), as well as if it is an operator.
 class PrototypeAST {
   std::string Name;
   std::vector<std::string> Args;
   bool IsOperator;
   unsigned Precedence; // Precedence if a binary op.
 
 public:
   PrototypeAST(const std::string &Name, std::vector<std::string> Args,
                bool IsOperator = false, unsigned Prec = 0)
       : Name(Name), Args(std::move(Args)), IsOperator(IsOperator),
         Precedence(Prec) {}
+
   Function *codegen();
   const std::string &getName() const { return Name; }
 
   bool isUnaryOp() const { return IsOperator && Args.size() == 1; }
   bool isBinaryOp() const { return IsOperator && Args.size() == 2; }
 
   char getOperatorName() const {
     assert(isUnaryOp() || isBinaryOp());
     return Name[Name.size() - 1];
   }
 
   unsigned getBinaryPrecedence() const { return Precedence; }
 };
 
 /// FunctionAST - This class represents a function definition itself.
 class FunctionAST {
   std::unique_ptr<PrototypeAST> Proto;
   std::unique_ptr<ExprAST> Body;
 
 public:
   FunctionAST(std::unique_ptr<PrototypeAST> Proto,
               std::unique_ptr<ExprAST> Body)
       : Proto(std::move(Proto)), Body(std::move(Body)) {}
+
   Function *codegen();
 };
+
 } // end anonymous namespace
 
 //===----------------------------------------------------------------------===//
 // Parser
 //===----------------------------------------------------------------------===//
 
 /// CurTok/getNextToken - Provide a simple token buffer.  CurTok is the current
 /// token the parser is looking at.  getNextToken reads another token from the

examples/Kaleidoscope/BuildingAJIT/Chapter2/KaleidoscopeJIT.h

 #include "llvm/ExecutionEngine/RuntimeDyld.h"
 #include "llvm/ExecutionEngine/SectionMemoryManager.h"
 #include "llvm/ExecutionEngine/Orc/CompileUtils.h"
 #include "llvm/ExecutionEngine/Orc/IRCompileLayer.h"
 #include "llvm/ExecutionEngine/Orc/IRTransformLayer.h"
 #include "llvm/ExecutionEngine/Orc/LambdaResolver.h"
 #include "llvm/ExecutionEngine/Orc/ObjectLinkingLayer.h"
 #include "llvm/IR/DataLayout.h"
+#include "llvm/IR/LegacyPassManager.h"
 #include "llvm/IR/Mangler.h"
 #include "llvm/Support/DynamicLibrary.h"
-#include "llvm/Support/raw_ostream.h"
 #include "llvm/Target/TargetMachine.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/Transforms/Scalar.h"
+#include "llvm/Transforms/Scalar/GVN.h"
 #include <algorithm>
 #include <memory>
 #include <string>
 #include <vector>
 
 namespace llvm {
 namespace orc {
 
JITSymbol findSymbol(const std::string Name) {
     return OptimizeLayer.findSymbol(MangledNameStream.str(), true);
   }
 
   void removeModule(ModuleHandle H) {
     OptimizeLayer.removeModuleSet(H);
   }
 
 private:
-
   std::unique_ptr<Module> optimizeModule(std::unique_ptr<Module> M) {
     // Create a function pass manager.
     auto FPM = llvm::make_unique<legacy::FunctionPassManager>(M.get());
 
     // Add some optimizations.
     FPM->add(createInstructionCombiningPass());
     FPM->add(createReassociatePass());
     FPM->add(createGVNPass());
     FPM->add(createCFGSimplificationPass());
     FPM->doInitialization();
 
     // Run the optimizations over all functions in the module being added to
     // the JIT.
     for (auto &F : *M)
       FPM->run(F);
 
     return M;
   }
-
 };
 
 } // end namespace orc
 } // end namespace llvm
 
 #endif // LLVM_EXECUTIONENGINE_ORC_KALEIDOSCOPEJIT_H

examples/Kaleidoscope/BuildingAJIT/Chapter2/toy.cpp

 #include "llvm/ADT/APFloat.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/IR/BasicBlock.h"
 #include "llvm/IR/Constants.h"
 #include "llvm/IR/DerivedTypes.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/IRBuilder.h"
 #include "llvm/IR/LLVMContext.h"
-#include "llvm/IR/LegacyPassManager.h"
 #include "llvm/IR/Module.h"
 #include "llvm/IR/Type.h"
 #include "llvm/IR/Verifier.h"
 #include "llvm/Support/TargetSelect.h"
 #include "llvm/Target/TargetMachine.h"
-#include "llvm/Transforms/Scalar.h"
-#include "llvm/Transforms/Scalar/GVN.h"
 #include "KaleidoscopeJIT.h"
+#include <algorithm>
 #include <cassert>
 #include <cctype>
 #include <cstdint>
 #include <cstdio>
 #include <cstdlib>
 #include <map>
 #include <memory>
 #include <string>
static int gettok() {
   int ThisChar = LastChar;
   LastChar = getchar();
   return ThisChar;
 }
 
 //===----------------------------------------------------------------------===//
 // Abstract Syntax Tree (aka Parse Tree)
 //===----------------------------------------------------------------------===//
+
 namespace {
+
 /// ExprAST - Base class for all expression nodes.
 class ExprAST {
 public:
-  virtual ~ExprAST() {}
+  virtual ~ExprAST() = default;
+
   virtual Value *codegen() = 0;
 };
 
 /// NumberExprAST - Expression class for numeric literals like "1.0".
 class NumberExprAST : public ExprAST {
   double Val;
 
 public:
   NumberExprAST(double Val) : Val(Val) {}
+
   Value *codegen() override;
 };
 
 /// VariableExprAST - Expression class for referencing a variable, like "a".
 class VariableExprAST : public ExprAST {
   std::string Name;
 
 public:
   VariableExprAST(const std::string &Name) : Name(Name) {}
-  const std::string &getName() const { return Name; }
+
   Value *codegen() override;
+  const std::string &getName() const { return Name; }
 };
 
 /// UnaryExprAST - Expression class for a unary operator.
 class UnaryExprAST : public ExprAST {
   char Opcode;
   std::unique_ptr<ExprAST> Operand;
 
 public:
   UnaryExprAST(char Opcode, std::unique_ptr<ExprAST> Operand)
       : Opcode(Opcode), Operand(std::move(Operand)) {}
+
   Value *codegen() override;
 };
 
 /// BinaryExprAST - Expression class for a binary operator.
 class BinaryExprAST : public ExprAST {
   char Op;
   std::unique_ptr<ExprAST> LHS, RHS;
 
 public:
   BinaryExprAST(char Op, std::unique_ptr<ExprAST> LHS,
                 std::unique_ptr<ExprAST> RHS)
       : Op(Op), LHS(std::move(LHS)), RHS(std::move(RHS)) {}
+
   Value *codegen() override;
 };
 
 /// CallExprAST - Expression class for function calls.
 class CallExprAST : public ExprAST {
   std::string Callee;
   std::vector<std::unique_ptr<ExprAST>> Args;
 
 public:
   CallExprAST(const std::string &Callee,
               std::vector<std::unique_ptr<ExprAST>> Args)
       : Callee(Callee), Args(std::move(Args)) {}
+
   Value *codegen() override;
 };
 
 /// IfExprAST - Expression class for if/then/else.
 class IfExprAST : public ExprAST {
   std::unique_ptr<ExprAST> Cond, Then, Else;
 
 public:
   IfExprAST(std::unique_ptr<ExprAST> Cond, std::unique_ptr<ExprAST> Then,
             std::unique_ptr<ExprAST> Else)
       : Cond(std::move(Cond)), Then(std::move(Then)), Else(std::move(Else)) {}
+
   Value *codegen() override;
 };
 
 /// ForExprAST - Expression class for for/in.
 class ForExprAST : public ExprAST {
   std::string VarName;
   std::unique_ptr<ExprAST> Start, End, Step, Body;
 
 public:
   ForExprAST(const std::string &VarName, std::unique_ptr<ExprAST> Start,
              std::unique_ptr<ExprAST> End, std::unique_ptr<ExprAST> Step,
              std::unique_ptr<ExprAST> Body)
       : VarName(VarName), Start(std::move(Start)), End(std::move(End)),
         Step(std::move(Step)), Body(std::move(Body)) {}
+
   Value *codegen() override;
 };
 
 /// VarExprAST - Expression class for var/in
 class VarExprAST : public ExprAST {
   std::vector<std::pair<std::string, std::unique_ptr<ExprAST>>> VarNames;
   std::unique_ptr<ExprAST> Body;
 
 public:
   VarExprAST(
       std::vector<std::pair<std::string, std::unique_ptr<ExprAST>>> VarNames,
       std::unique_ptr<ExprAST> Body)
       : VarNames(std::move(VarNames)), Body(std::move(Body)) {}
+
   Value *codegen() override;
 };
 
 /// PrototypeAST - This class represents the "prototype" for a function,
 /// which captures its name, and its argument names (thus implicitly the number
 /// of arguments the function takes), as well as if it is an operator.
 class PrototypeAST {
   std::string Name;
   std::vector<std::string> Args;
   bool IsOperator;
   unsigned Precedence; // Precedence if a binary op.
 
 public:
   PrototypeAST(const std::string &Name, std::vector<std::string> Args,
                bool IsOperator = false, unsigned Prec = 0)
       : Name(Name), Args(std::move(Args)), IsOperator(IsOperator),
         Precedence(Prec) {}
+
   Function *codegen();
   const std::string &getName() const { return Name; }
 
   bool isUnaryOp() const { return IsOperator && Args.size() == 1; }
   bool isBinaryOp() const { return IsOperator && Args.size() == 2; }
 
   char getOperatorName() const {
     assert(isUnaryOp() || isBinaryOp());
     return Name[Name.size() - 1];
   }
 
   unsigned getBinaryPrecedence() const { return Precedence; }
 };
 
 /// FunctionAST - This class represents a function definition itself.
 class FunctionAST {
   std::unique_ptr<PrototypeAST> Proto;
   std::unique_ptr<ExprAST> Body;
 
 public:
   FunctionAST(std::unique_ptr<PrototypeAST> Proto,
               std::unique_ptr<ExprAST> Body)
       : Proto(std::move(Proto)), Body(std::move(Body)) {}
+
   Function *codegen();
 };
+
 } // end anonymous namespace
 
 //===----------------------------------------------------------------------===//
 // Parser
 //===----------------------------------------------------------------------===//
 
 /// CurTok/getNextToken - Provide a simple token buffer.  CurTok is the current
 /// token the parser is looking at.  getNextToken reads another token from the

examples/Kaleidoscope/BuildingAJIT/Chapter3/KaleidoscopeJIT.h

 #include "llvm/ExecutionEngine/SectionMemoryManager.h"
 #include "llvm/ExecutionEngine/Orc/CompileOnDemandLayer.h"
 #include "llvm/ExecutionEngine/Orc/CompileUtils.h"
 #include "llvm/ExecutionEngine/Orc/IRCompileLayer.h"
 #include "llvm/ExecutionEngine/Orc/IRTransformLayer.h"
 #include "llvm/ExecutionEngine/Orc/LambdaResolver.h"
 #include "llvm/ExecutionEngine/Orc/ObjectLinkingLayer.h"
 #include "llvm/IR/DataLayout.h"
+#include "llvm/IR/LegacyPassManager.h"
 #include "llvm/IR/Mangler.h"
 #include "llvm/Support/DynamicLibrary.h"
 #include "llvm/Support/raw_ostream.h"
 #include "llvm/Target/TargetMachine.h"
+#include "llvm/Transforms/Scalar.h"
+#include "llvm/Transforms/Scalar/GVN.h"
 #include <algorithm>
 #include <memory>
+#include <set>
 #include <string>
 #include <vector>
 
 namespace llvm {
 namespace orc {
 
 class KaleidoscopeJIT {
 private:
JITSymbol findSymbol(const std::string Name) {
     return CODLayer.findSymbol(MangledNameStream.str(), true);
   }
 
   void removeModule(ModuleHandle H) {
     CODLayer.removeModuleSet(H);
   }
 
 private:
-
   std::unique_ptr<Module> optimizeModule(std::unique_ptr<Module> M) {
     // Create a function pass manager.
     auto FPM = llvm::make_unique<legacy::FunctionPassManager>(M.get());
 
     // Add some optimizations.
     FPM->add(createInstructionCombiningPass());
     FPM->add(createReassociatePass());
     FPM->add(createGVNPass());
     FPM->add(createCFGSimplificationPass());
     FPM->doInitialization();
 
     // Run the optimizations over all functions in the module being added to
     // the JIT.
     for (auto &F : *M)
       FPM->run(F);
 
     return M;
   }
-
 };
 
 } // end namespace orc
 } // end namespace llvm
 
 #endif // LLVM_EXECUTIONENGINE_ORC_KALEIDOSCOPEJIT_H

examples/Kaleidoscope/BuildingAJIT/Chapter3/toy.cpp

 #include "llvm/ADT/APFloat.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/IR/BasicBlock.h"
 #include "llvm/IR/Constants.h"
 #include "llvm/IR/DerivedTypes.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/IRBuilder.h"
 #include "llvm/IR/LLVMContext.h"
-#include "llvm/IR/LegacyPassManager.h"
 #include "llvm/IR/Module.h"
 #include "llvm/IR/Type.h"
 #include "llvm/IR/Verifier.h"
 #include "llvm/Support/TargetSelect.h"
 #include "llvm/Target/TargetMachine.h"
-#include "llvm/Transforms/Scalar.h"
-#include "llvm/Transforms/Scalar/GVN.h"
 #include "KaleidoscopeJIT.h"
+#include <algorithm>
 #include <cassert>
 #include <cctype>
 #include <cstdint>
 #include <cstdio>
 #include <cstdlib>
 #include <map>
 #include <memory>
 #include <string>
static int gettok() {
   int ThisChar = LastChar;
   LastChar = getchar();
   return ThisChar;
 }
 
 //===----------------------------------------------------------------------===//
 // Abstract Syntax Tree (aka Parse Tree)
 //===----------------------------------------------------------------------===//
+
 namespace {
+
 /// ExprAST - Base class for all expression nodes.
 class ExprAST {
 public:
-  virtual ~ExprAST() {}
+  virtual ~ExprAST() = default;
+
   virtual Value *codegen() = 0;
 };
 
 /// NumberExprAST - Expression class for numeric literals like "1.0".
 class NumberExprAST : public ExprAST {
   double Val;
 
 public:
   NumberExprAST(double Val) : Val(Val) {}
+
   Value *codegen() override;
 };
 
 /// VariableExprAST - Expression class for referencing a variable, like "a".
 class VariableExprAST : public ExprAST {
   std::string Name;
 
 public:
   VariableExprAST(const std::string &Name) : Name(Name) {}
-  const std::string &getName() const { return Name; }
+
   Value *codegen() override;
+  const std::string &getName() const { return Name; }
 };
 
 /// UnaryExprAST - Expression class for a unary operator.
 class UnaryExprAST : public ExprAST {
   char Opcode;
   std::unique_ptr<ExprAST> Operand;
 
 public:
   UnaryExprAST(char Opcode, std::unique_ptr<ExprAST> Operand)
       : Opcode(Opcode), Operand(std::move(Operand)) {}
+
   Value *codegen() override;
 };
 
 /// BinaryExprAST - Expression class for a binary operator.
 class BinaryExprAST : public ExprAST {
   char Op;
   std::unique_ptr<ExprAST> LHS, RHS;
 
 public:
   BinaryExprAST(char Op, std::unique_ptr<ExprAST> LHS,
                 std::unique_ptr<ExprAST> RHS)
       : Op(Op), LHS(std::move(LHS)), RHS(std::move(RHS)) {}
+
   Value *codegen() override;
 };
 
 /// CallExprAST - Expression class for function calls.
 class CallExprAST : public ExprAST {
   std::string Callee;
   std::vector<std::unique_ptr<ExprAST>> Args;
 
 public:
   CallExprAST(const std::string &Callee,
               std::vector<std::unique_ptr<ExprAST>> Args)
       : Callee(Callee), Args(std::move(Args)) {}
+
   Value *codegen() override;
 };
 
 /// IfExprAST - Expression class for if/then/else.
 class IfExprAST : public ExprAST {
   std::unique_ptr<ExprAST> Cond, Then, Else;
 
 public:
   IfExprAST(std::unique_ptr<ExprAST> Cond, std::unique_ptr<ExprAST> Then,
             std::unique_ptr<ExprAST> Else)
       : Cond(std::move(Cond)), Then(std::move(Then)), Else(std::move(Else)) {}
+
   Value *codegen() override;
 };
 
 /// ForExprAST - Expression class for for/in.
 class ForExprAST : public ExprAST {
   std::string VarName;
   std::unique_ptr<ExprAST> Start, End, Step, Body;
 
 public:
   ForExprAST(const std::string &VarName, std::unique_ptr<ExprAST> Start,
              std::unique_ptr<ExprAST> End, std::unique_ptr<ExprAST> Step,
              std::unique_ptr<ExprAST> Body)
       : VarName(VarName), Start(std::move(Start)), End(std::move(End)),
         Step(std::move(Step)), Body(std::move(Body)) {}
+
   Value *codegen() override;
 };
 
 /// VarExprAST - Expression class for var/in
 class VarExprAST : public ExprAST {
   std::vector<std::pair<std::string, std::unique_ptr<ExprAST>>> VarNames;
   std::unique_ptr<ExprAST> Body;
 
 public:
   VarExprAST(
       std::vector<std::pair<std::string, std::unique_ptr<ExprAST>>> VarNames,
       std::unique_ptr<ExprAST> Body)
       : VarNames(std::move(VarNames)), Body(std::move(Body)) {}
+
   Value *codegen() override;
 };
 
 /// PrototypeAST - This class represents the "prototype" for a function,
 /// which captures its name, and its argument names (thus implicitly the number
 /// of arguments the function takes), as well as if it is an operator.
 class PrototypeAST {
   std::string Name;
   std::vector<std::string> Args;
   bool IsOperator;
   unsigned Precedence; // Precedence if a binary op.
 
 public:
   PrototypeAST(const std::string &Name, std::vector<std::string> Args,
                bool IsOperator = false, unsigned Prec = 0)
       : Name(Name), Args(std::move(Args)), IsOperator(IsOperator),
         Precedence(Prec) {}
+
   Function *codegen();
   const std::string &getName() const { return Name; }
 
   bool isUnaryOp() const { return IsOperator && Args.size() == 1; }
   bool isBinaryOp() const { return IsOperator && Args.size() == 2; }
 
   char getOperatorName() const {
     assert(isUnaryOp() || isBinaryOp());
     return Name[Name.size() - 1];
   }
 
   unsigned getBinaryPrecedence() const { return Precedence; }
 };
 
 /// FunctionAST - This class represents a function definition itself.
 class FunctionAST {
   std::unique_ptr<PrototypeAST> Proto;
   std::unique_ptr<ExprAST> Body;
 
 public:
   FunctionAST(std::unique_ptr<PrototypeAST> Proto,
               std::unique_ptr<ExprAST> Body)
       : Proto(std::move(Proto)), Body(std::move(Body)) {}
+
   Function *codegen();
 };
+
 } // end anonymous namespace
 
 //===----------------------------------------------------------------------===//
 // Parser
 //===----------------------------------------------------------------------===//
 
 /// CurTok/getNextToken - Provide a simple token buffer.  CurTok is the current
 /// token the parser is looking at.  getNextToken reads another token from the

examples/Kaleidoscope/BuildingAJIT/Chapter4/KaleidoscopeJIT.h

 #include "llvm/ExecutionEngine/SectionMemoryManager.h"
 #include "llvm/ExecutionEngine/Orc/CompileOnDemandLayer.h"
 #include "llvm/ExecutionEngine/Orc/CompileUtils.h"
 #include "llvm/ExecutionEngine/Orc/IRCompileLayer.h"
 #include "llvm/ExecutionEngine/Orc/IRTransformLayer.h"
 #include "llvm/ExecutionEngine/Orc/LambdaResolver.h"
 #include "llvm/ExecutionEngine/Orc/ObjectLinkingLayer.h"
 #include "llvm/IR/DataLayout.h"
+#include "llvm/IR/LegacyPassManager.h"
 #include "llvm/IR/Mangler.h"
 #include "llvm/Support/DynamicLibrary.h"
+#include "llvm/Support/Error.h"
 #include "llvm/Support/raw_ostream.h"
 #include "llvm/Target/TargetMachine.h"
+#include "llvm/Transforms/Scalar.h"
+#include "llvm/Transforms/Scalar/GVN.h"
 #include <algorithm>
+#include <cassert>
+#include <cstdlib>
 #include <memory>
 #include <string>
 #include <vector>
 
 class PrototypeAST;
 class ExprAST;
 
 /// FunctionAST - This class represents a function definition itself.
 class FunctionAST {
   std::unique_ptr<PrototypeAST> Proto;
   std::unique_ptr<ExprAST> Body;
 
 public:
   FunctionAST(std::unique_ptr<PrototypeAST> Proto,
               std::unique_ptr<ExprAST> Body)
       : Proto(std::move(Proto)), Body(std::move(Body)) {}
+
   const PrototypeAST& getProto() const;
   const std::string& getName() const;
   llvm::Function *codegen();
 };
 
 /// This will compile FnAST to IR, rename the function to add the given
 /// suffix (needed to prevent a name-clash with the function's stub),
 /// and then take ownership of the module that the function was compiled
JITSymbol findSymbol(const std::string Name) {
     return OptimizeLayer.findSymbol(mangle(Name), true);
   }
 
   void removeModule(ModuleHandle H) {
     OptimizeLayer.removeModuleSet(H);
   }
 
 private:
-
   std::string mangle(const std::string &Name) {
     std::string MangledName;
     raw_string_ostream MangledNameStream(MangledName);
     Mangler::getNameWithPrefix(MangledNameStream, Name, DL);
     return MangledNameStream.str();
   }
 
   std::unique_ptr<Module> optimizeModule(std::unique_ptr<Module> M) {
std::unique_ptr<Module> optimizeModule(std::unique_ptr<Module> M) {
 
     // Run the optimizations over all functions in the module being added to
     // the JIT.
     for (auto &F : *M)
       FPM->run(F);
 
     return M;
   }
-
 };
 
 } // end namespace orc
 } // end namespace llvm
 
 #endif // LLVM_EXECUTIONENGINE_ORC_KALEIDOSCOPEJIT_H

examples/Kaleidoscope/BuildingAJIT/Chapter4/toy.cpp

 #include "llvm/ADT/APFloat.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/IR/BasicBlock.h"
 #include "llvm/IR/Constants.h"
 #include "llvm/IR/DerivedTypes.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/IRBuilder.h"
 #include "llvm/IR/LLVMContext.h"
-#include "llvm/IR/LegacyPassManager.h"
 #include "llvm/IR/Module.h"
 #include "llvm/IR/Type.h"
 #include "llvm/IR/Verifier.h"
 #include "llvm/Support/Error.h"
+#include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/TargetSelect.h"
 #include "llvm/Target/TargetMachine.h"
-#include "llvm/Transforms/Scalar.h"
-#include "llvm/Transforms/Scalar/GVN.h"
 #include "KaleidoscopeJIT.h"
+#include <algorithm>
 #include <cassert>
 #include <cctype>
 #include <cstdint>
 #include <cstdio>
 #include <cstdlib>
 #include <map>
 #include <memory>
 #include <string>

 
 //===----------------------------------------------------------------------===//
 // Abstract Syntax Tree (aka Parse Tree)
 //===----------------------------------------------------------------------===//
 
 /// ExprAST - Base class for all expression nodes.
 class ExprAST {
 public:
-  virtual ~ExprAST() {}
+  virtual ~ExprAST() = default;
+
   virtual Value *codegen() = 0;
 };
 
 /// NumberExprAST - Expression class for numeric literals like "1.0".
 class NumberExprAST : public ExprAST {
   double Val;
 
 public:
   NumberExprAST(double Val) : Val(Val) {}
+
   Value *codegen() override;
 };
 
 /// VariableExprAST - Expression class for referencing a variable, like "a".
 class VariableExprAST : public ExprAST {
   std::string Name;
 
 public:
   VariableExprAST(const std::string &Name) : Name(Name) {}
-  const std::string &getName() const { return Name; }
+
   Value *codegen() override;
+  const std::string &getName() const { return Name; }
 };
 
 /// UnaryExprAST - Expression class for a unary operator.
 class UnaryExprAST : public ExprAST {
   char Opcode;
   std::unique_ptr<ExprAST> Operand;
 
 public:
   UnaryExprAST(char Opcode, std::unique_ptr<ExprAST> Operand)
       : Opcode(Opcode), Operand(std::move(Operand)) {}
+
   Value *codegen() override;
 };
 
 /// BinaryExprAST - Expression class for a binary operator.
 class BinaryExprAST : public ExprAST {
   char Op;
   std::unique_ptr<ExprAST> LHS, RHS;
 
 public:
   BinaryExprAST(char Op, std::unique_ptr<ExprAST> LHS,
                 std::unique_ptr<ExprAST> RHS)
       : Op(Op), LHS(std::move(LHS)), RHS(std::move(RHS)) {}
+
   Value *codegen() override;
 };
 
 /// CallExprAST - Expression class for function calls.
 class CallExprAST : public ExprAST {
   std::string Callee;
   std::vector<std::unique_ptr<ExprAST>> Args;
 
 public:
   CallExprAST(const std::string &Callee,
               std::vector<std::unique_ptr<ExprAST>> Args)
       : Callee(Callee), Args(std::move(Args)) {}
+
   Value *codegen() override;
 };
 
 /// IfExprAST - Expression class for if/then/else.
 class IfExprAST : public ExprAST {
   std::unique_ptr<ExprAST> Cond, Then, Else;
 
 public:
   IfExprAST(std::unique_ptr<ExprAST> Cond, std::unique_ptr<ExprAST> Then,
             std::unique_ptr<ExprAST> Else)
       : Cond(std::move(Cond)), Then(std::move(Then)), Else(std::move(Else)) {}
+
   Value *codegen() override;
 };
 
 /// ForExprAST - Expression class for for/in.
 class ForExprAST : public ExprAST {
   std::string VarName;
   std::unique_ptr<ExprAST> Start, End, Step, Body;
 
 public:
   ForExprAST(const std::string &VarName, std::unique_ptr<ExprAST> Start,
              std::unique_ptr<ExprAST> End, std::unique_ptr<ExprAST> Step,
              std::unique_ptr<ExprAST> Body)
       : VarName(VarName), Start(std::move(Start)), End(std::move(End)),
         Step(std::move(Step)), Body(std::move(Body)) {}
+
   Value *codegen() override;
 };
 
 /// VarExprAST - Expression class for var/in
 class VarExprAST : public ExprAST {
   std::vector<std::pair<std::string, std::unique_ptr<ExprAST>>> VarNames;
   std::unique_ptr<ExprAST> Body;
 
 public:
   VarExprAST(
       std::vector<std::pair<std::string, std::unique_ptr<ExprAST>>> VarNames,
       std::unique_ptr<ExprAST> Body)
       : VarNames(std::move(VarNames)), Body(std::move(Body)) {}
+
   Value *codegen() override;
 };
 
 /// PrototypeAST - This class represents the "prototype" for a function,
 /// which captures its name, and its argument names (thus implicitly the number
 /// of arguments the function takes), as well as if it is an operator.
 class PrototypeAST {
   std::string Name;
   std::vector<std::string> Args;
   bool IsOperator;
   unsigned Precedence; // Precedence if a binary op.
 
 public:
   PrototypeAST(const std::string &Name, std::vector<std::string> Args,
                bool IsOperator = false, unsigned Prec = 0)
       : Name(Name), Args(std::move(Args)), IsOperator(IsOperator),
         Precedence(Prec) {}
+
   Function *codegen();
   const std::string &getName() const { return Name; }
 
   bool isUnaryOp() const { return IsOperator && Args.size() == 1; }
   bool isBinaryOp() const { return IsOperator && Args.size() == 2; }
 
   char getOperatorName() const {
     assert(isUnaryOp() || isBinaryOp());

examples/Kaleidoscope/BuildingAJIT/Chapter5/KaleidoscopeJIT.h

 // Contains a simple JIT definition for use in the kaleidoscope tutorials.
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_EXECUTIONENGINE_ORC_KALEIDOSCOPEJIT_H
 #define LLVM_EXECUTIONENGINE_ORC_KALEIDOSCOPEJIT_H
 
 #include "RemoteJITUtils.h"
+#include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/Triple.h"
 #include "llvm/ExecutionEngine/ExecutionEngine.h"
 #include "llvm/ExecutionEngine/JITSymbol.h"
 #include "llvm/ExecutionEngine/RuntimeDyld.h"
-#include "llvm/ExecutionEngine/SectionMemoryManager.h"
 #include "llvm/ExecutionEngine/Orc/CompileOnDemandLayer.h"
 #include "llvm/ExecutionEngine/Orc/CompileUtils.h"
 #include "llvm/ExecutionEngine/Orc/IRCompileLayer.h"
 #include "llvm/ExecutionEngine/Orc/IRTransformLayer.h"
 #include "llvm/ExecutionEngine/Orc/LambdaResolver.h"
 #include "llvm/ExecutionEngine/Orc/ObjectLinkingLayer.h"
 #include "llvm/ExecutionEngine/Orc/OrcRemoteTargetClient.h"
 #include "llvm/IR/DataLayout.h"
+#include "llvm/IR/LegacyPassManager.h"
 #include "llvm/IR/Mangler.h"
 #include "llvm/Support/DynamicLibrary.h"
+#include "llvm/Support/Error.h"
 #include "llvm/Support/raw_ostream.h"
 #include "llvm/Target/TargetMachine.h"
+#include "llvm/Transforms/Scalar.h"
+#include "llvm/Transforms/Scalar/GVN.h"
 #include <algorithm>
+#include <cassert>
+#include <cstdlib>
 #include <memory>
 #include <string>
 #include <vector>
 
 class PrototypeAST;
 class ExprAST;
 
 /// FunctionAST - This class represents a function definition itself.
 class FunctionAST {
   std::unique_ptr<PrototypeAST> Proto;
   std::unique_ptr<ExprAST> Body;
 
 public:
   FunctionAST(std::unique_ptr<PrototypeAST> Proto,
               std::unique_ptr<ExprAST> Body)
       : Proto(std::move(Proto)), Body(std::move(Body)) {}
+
   const PrototypeAST& getProto() const;
   const std::string& getName() const;
   llvm::Function *codegen();
 };
 
 /// This will compile FnAST to IR, rename the function to add the given
 /// suffix (needed to prevent a name-clash with the function's stub),
 /// and then take ownership of the module that the function was compiled
JITSymbol findSymbol(const std::string Name) {
     return OptimizeLayer.findSymbol(mangle(Name), true);
   }
 
   void removeModule(ModuleHandle H) {
     OptimizeLayer.removeModuleSet(H);
   }
 
 private:
-
   std::string mangle(const std::string &Name) {
     std::string MangledName;
     raw_string_ostream MangledNameStream(MangledName);
     Mangler::getNameWithPrefix(MangledNameStream, Name, DL);
     return MangledNameStream.str();
   }
 
   std::unique_ptr<Module> optimizeModule(std::unique_ptr<Module> M) {
std::unique_ptr<Module> optimizeModule(std::unique_ptr<Module> M) {
 
     // Run the optimizations over all functions in the module being added to
     // the JIT.
     for (auto &F : *M)
       FPM->run(F);
 
     return M;
   }
-
 };
 
 } // end namespace orc
 } // end namespace llvm
 
 #endif // LLVM_EXECUTIONENGINE_ORC_KALEIDOSCOPEJIT_H

examples/Kaleidoscope/BuildingAJIT/Chapter5/RemoteJITUtils.h

 // Utilities for remote-JITing with LLI.
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_TOOLS_LLI_REMOTEJITUTILS_H
 #define LLVM_TOOLS_LLI_REMOTEJITUTILS_H
 
 #include "llvm/ExecutionEngine/Orc/RPCByteChannel.h"
-#include "llvm/ExecutionEngine/RTDyldMemoryManager.h"
-#include <mutex>
+#include "llvm/Support/Error.h"
+#include <cassert>
+#include <cerrno>
+#include <system_error>
 
 #if !defined(_MSC_VER) && !defined(__MINGW32__)
 #include <unistd.h>
 #else
 #include <io.h>
 #endif
 
 /// RPC channel that reads from and writes from file descriptors.
public:
   }
 
   llvm::Error send() override { return llvm::Error::success(); }
 
 private:
   int InFD, OutFD;
 };
 
-#endif
+#endif // LLVM_TOOLS_LLI_REMOTEJITUTILS_H

examples/Kaleidoscope/BuildingAJIT/Chapter5/toy.cpp

 #include "llvm/ADT/APFloat.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/IR/BasicBlock.h"
 #include "llvm/IR/Constants.h"
 #include "llvm/IR/DerivedTypes.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/IRBuilder.h"
 #include "llvm/IR/LLVMContext.h"
-#include "llvm/IR/LegacyPassManager.h"
 #include "llvm/IR/Module.h"
 #include "llvm/IR/Type.h"
 #include "llvm/IR/Verifier.h"
+#include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Error.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/raw_ostream.h"
 #include "llvm/Support/TargetSelect.h"
 #include "llvm/Target/TargetMachine.h"
-#include "llvm/Transforms/Scalar.h"
-#include "llvm/Transforms/Scalar/GVN.h"
 #include "KaleidoscopeJIT.h"
+#include "RemoteJITUtils.h"
+#include <algorithm>
 #include <cassert>
 #include <cctype>
 #include <cstdint>
 #include <cstdio>
 #include <cstdlib>
+#include <cstring>
 #include <map>
 #include <memory>
 #include <string>
 #include <utility>
 #include <vector>
-
 #include <netdb.h>
-#include <unistd.h>
 #include <netinet/in.h>
 #include <sys/socket.h>
 
 using namespace llvm;
 using namespace llvm::orc;
 
 // Command line argument for TCP hostname.
 cl::opt<std::string> HostName("hostname",

 
 //===----------------------------------------------------------------------===//
 // Abstract Syntax Tree (aka Parse Tree)
 //===----------------------------------------------------------------------===//
 
 /// ExprAST - Base class for all expression nodes.
 class ExprAST {
 public:
-  virtual ~ExprAST() {}
+  virtual ~ExprAST() = default;
+
   virtual Value *codegen() = 0;
 };
 
 /// NumberExprAST - Expression class for numeric literals like "1.0".
 class NumberExprAST : public ExprAST {
   double Val;
 
 public:
   NumberExprAST(double Val) : Val(Val) {}
+
   Value *codegen() override;
 };
 
 /// VariableExprAST - Expression class for referencing a variable, like "a".
 class VariableExprAST : public ExprAST {
   std::string Name;
 
 public:
   VariableExprAST(const std::string &Name) : Name(Name) {}
-  const std::string &getName() const { return Name; }
+
   Value *codegen() override;
+  const std::string &getName() const { return Name; }
 };
 
 /// UnaryExprAST - Expression class for a unary operator.
 class UnaryExprAST : public ExprAST {
   char Opcode;
   std::unique_ptr<ExprAST> Operand;
 
 public:
   UnaryExprAST(char Opcode, std::unique_ptr<ExprAST> Operand)
       : Opcode(Opcode), Operand(std::move(Operand)) {}
+
   Value *codegen() override;
 };
 
 /// BinaryExprAST - Expression class for a binary operator.
 class BinaryExprAST : public ExprAST {
   char Op;
   std::unique_ptr<ExprAST> LHS, RHS;
 
 public:
   BinaryExprAST(char Op, std::unique_ptr<ExprAST> LHS,
                 std::unique_ptr<ExprAST> RHS)
       : Op(Op), LHS(std::move(LHS)), RHS(std::move(RHS)) {}
+
   Value *codegen() override;
 };
 
 /// CallExprAST - Expression class for function calls.
 class CallExprAST : public ExprAST {
   std::string Callee;
   std::vector<std::unique_ptr<ExprAST>> Args;
 
 public:
   CallExprAST(const std::string &Callee,
               std::vector<std::unique_ptr<ExprAST>> Args)
       : Callee(Callee), Args(std::move(Args)) {}
+
   Value *codegen() override;
 };
 
 /// IfExprAST - Expression class for if/then/else.
 class IfExprAST : public ExprAST {
   std::unique_ptr<ExprAST> Cond, Then, Else;
 
 public:
   IfExprAST(std::unique_ptr<ExprAST> Cond, std::unique_ptr<ExprAST> Then,
             std::unique_ptr<ExprAST> Else)
       : Cond(std::move(Cond)), Then(std::move(Then)), Else(std::move(Else)) {}
+
   Value *codegen() override;
 };
 
 /// ForExprAST - Expression class for for/in.
 class ForExprAST : public ExprAST {
   std::string VarName;
   std::unique_ptr<ExprAST> Start, End, Step, Body;
 
 public:
   ForExprAST(const std::string &VarName, std::unique_ptr<ExprAST> Start,
              std::unique_ptr<ExprAST> End, std::unique_ptr<ExprAST> Step,
              std::unique_ptr<ExprAST> Body)
       : VarName(VarName), Start(std::move(Start)), End(std::move(End)),
         Step(std::move(Step)), Body(std::move(Body)) {}
+
   Value *codegen() override;
 };
 
 /// VarExprAST - Expression class for var/in
 class VarExprAST : public ExprAST {
   std::vector<std::pair<std::string, std::unique_ptr<ExprAST>>> VarNames;
   std::unique_ptr<ExprAST> Body;
 
 public:
   VarExprAST(
       std::vector<std::pair<std::string, std::unique_ptr<ExprAST>>> VarNames,
       std::unique_ptr<ExprAST> Body)
       : VarNames(std::move(VarNames)), Body(std::move(Body)) {}
+
   Value *codegen() override;
 };
 
 /// PrototypeAST - This class represents the "prototype" for a function,
 /// which captures its name, and its argument names (thus implicitly the number
 /// of arguments the function takes), as well as if it is an operator.
 class PrototypeAST {
   std::string Name;
   std::vector<std::string> Args;
   bool IsOperator;
   unsigned Precedence; // Precedence if a binary op.
 
 public:
   PrototypeAST(const std::string &Name, std::vector<std::string> Args,
                bool IsOperator = false, unsigned Prec = 0)
       : Name(Name), Args(std::move(Args)), IsOperator(IsOperator),
         Precedence(Prec) {}
+
   Function *codegen();
   const std::string &getName() const { return Name; }
 
   bool isUnaryOp() const { return IsOperator && Args.size() == 1; }
   bool isBinaryOp() const { return IsOperator && Args.size() == 2; }
 
   char getOperatorName() const {
     assert(isUnaryOp() || isBinaryOp());
std::unique_ptr<FDRPCChannel> connect() {
   hostent *server = gethostbyname(HostName.c_str());
 
   if (!server) {
     errs() << "Could not find host " << HostName << "\n";
     exit(1);
   }
 
   sockaddr_in servAddr;
-  bzero(&servAddr, sizeof(servAddr));
+  memset(&servAddr, 0, sizeof(servAddr));
   servAddr.sin_family = PF_INET;
-  bcopy(server->h_addr, &servAddr.sin_addr.s_addr, server->h_length);
+  memcpy(&servAddr.sin_addr.s_addr, server->h_addr, server->h_length);
   servAddr.sin_port = htons(Port);
   if (connect(sockfd, reinterpret_cast<sockaddr*>(&servAddr),
               sizeof(servAddr)) < 0) {
     errs() << "Failure to connect.\n";
     exit(1);
   }
 
   return llvm::make_unique<FDRPCChannel>(sockfd, sockfd);

examples/Kaleidoscope/Chapter2/toy.cpp

 #include "llvm/ADT/STLExtras.h"
+#include <algorithm>
 #include <cctype>
 #include <cstdio>
 #include <cstdlib>
 #include <map>
 #include <memory>
 #include <string>
 #include <vector>
 
static int gettok() {
   int ThisChar = LastChar;
   LastChar = getchar();
   return ThisChar;
 }
 
 //===----------------------------------------------------------------------===//
 // Abstract Syntax Tree (aka Parse Tree)
 //===----------------------------------------------------------------------===//
+
 namespace {
+
 /// ExprAST - Base class for all expression nodes.
 class ExprAST {
 public:
-  virtual ~ExprAST() {}
+  virtual ~ExprAST() = default;
 };
 
 /// NumberExprAST - Expression class for numeric literals like "1.0".
 class NumberExprAST : public ExprAST {
   double Val;
 
 public:
   NumberExprAST(double Val) : Val(Val) {}
class FunctionAST {
   std::unique_ptr<PrototypeAST> Proto;
   std::unique_ptr<ExprAST> Body;
 
 public:
   FunctionAST(std::unique_ptr<PrototypeAST> Proto,
               std::unique_ptr<ExprAST> Body)
       : Proto(std::move(Proto)), Body(std::move(Body)) {}
 };
+
 } // end anonymous namespace
 
 //===----------------------------------------------------------------------===//
 // Parser
 //===----------------------------------------------------------------------===//
 
 /// CurTok/getNextToken - Provide a simple token buffer.  CurTok is the current
 /// token the parser is looking at.  getNextToken reads another token from the

examples/Kaleidoscope/Chapter3/toy.cpp

 #include "llvm/ADT/APFloat.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/IR/BasicBlock.h"
 #include "llvm/IR/Constants.h"
 #include "llvm/IR/DerivedTypes.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/IRBuilder.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/Module.h"
 #include "llvm/IR/Type.h"
 #include "llvm/IR/Verifier.h"
+#include <algorithm>
 #include <cctype>
 #include <cstdio>
 #include <cstdlib>
 #include <map>
 #include <memory>
 #include <string>
 #include <vector>
 
static int gettok() {
   int ThisChar = LastChar;
   LastChar = getchar();
   return ThisChar;
 }
 
 //===----------------------------------------------------------------------===//
 // Abstract Syntax Tree (aka Parse Tree)
 //===----------------------------------------------------------------------===//
+
 namespace {
+
 /// ExprAST - Base class for all expression nodes.
 class ExprAST {
 public:
-  virtual ~ExprAST() {}
+  virtual ~ExprAST() = default;
+
   virtual Value *codegen() = 0;
 };
 
 /// NumberExprAST - Expression class for numeric literals like "1.0".
 class NumberExprAST : public ExprAST {
   double Val;
 
 public:
   NumberExprAST(double Val) : Val(Val) {}
+
   Value *codegen() override;
 };
 
 /// VariableExprAST - Expression class for referencing a variable, like "a".
 class VariableExprAST : public ExprAST {
   std::string Name;
 
 public:
   VariableExprAST(const std::string &Name) : Name(Name) {}
+
   Value *codegen() override;
 };
 
 /// BinaryExprAST - Expression class for a binary operator.
 class BinaryExprAST : public ExprAST {
   char Op;
   std::unique_ptr<ExprAST> LHS, RHS;
 
 public:
   BinaryExprAST(char Op, std::unique_ptr<ExprAST> LHS,
                 std::unique_ptr<ExprAST> RHS)
       : Op(Op), LHS(std::move(LHS)), RHS(std::move(RHS)) {}
+
   Value *codegen() override;
 };
 
 /// CallExprAST - Expression class for function calls.
 class CallExprAST : public ExprAST {
   std::string Callee;
   std::vector<std::unique_ptr<ExprAST>> Args;
 
 public:
   CallExprAST(const std::string &Callee,
               std::vector<std::unique_ptr<ExprAST>> Args)
       : Callee(Callee), Args(std::move(Args)) {}
+
   Value *codegen() override;
 };
 
 /// PrototypeAST - This class represents the "prototype" for a function,
 /// which captures its name, and its argument names (thus implicitly the number
 /// of arguments the function takes).
 class PrototypeAST {
   std::string Name;
   std::vector<std::string> Args;
 
 public:
   PrototypeAST(const std::string &Name, std::vector<std::string> Args)
       : Name(Name), Args(std::move(Args)) {}
+
   Function *codegen();
   const std::string &getName() const { return Name; }
 };
 
 /// FunctionAST - This class represents a function definition itself.
 class FunctionAST {
   std::unique_ptr<PrototypeAST> Proto;
   std::unique_ptr<ExprAST> Body;
 
 public:
   FunctionAST(std::unique_ptr<PrototypeAST> Proto,
               std::unique_ptr<ExprAST> Body)
       : Proto(std::move(Proto)), Body(std::move(Body)) {}
+
   Function *codegen();
 };
+
 } // end anonymous namespace
 
 //===----------------------------------------------------------------------===//
 // Parser
 //===----------------------------------------------------------------------===//
 
 /// CurTok/getNextToken - Provide a simple token buffer.  CurTok is the current
 /// token the parser is looking at.  getNextToken reads another token from the

examples/Kaleidoscope/Chapter4/toy.cpp

 #include "llvm/IR/Module.h"
 #include "llvm/IR/Type.h"
 #include "llvm/IR/Verifier.h"
 #include "llvm/Support/TargetSelect.h"
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/Transforms/Scalar.h"
 #include "llvm/Transforms/Scalar/GVN.h"
 #include "../include/KaleidoscopeJIT.h"
+#include <algorithm>
 #include <cassert>
 #include <cctype>
 #include <cstdint>
 #include <cstdio>
 #include <cstdlib>
 #include <map>
 #include <memory>
 #include <string>
static int gettok() {
   int ThisChar = LastChar;
   LastChar = getchar();
   return ThisChar;
 }
 
 //===----------------------------------------------------------------------===//
 // Abstract Syntax Tree (aka Parse Tree)
 //===----------------------------------------------------------------------===//
+
 namespace {
+
 /// ExprAST - Base class for all expression nodes.
 class ExprAST {
 public:
-  virtual ~ExprAST() {}
+  virtual ~ExprAST() = default;
+
   virtual Value *codegen() = 0;
 };
 
 /// NumberExprAST - Expression class for numeric literals like "1.0".
 class NumberExprAST : public ExprAST {
   double Val;
 
 public:
   NumberExprAST(double Val) : Val(Val) {}
+
   Value *codegen() override;
 };
 
 /// VariableExprAST - Expression class for referencing a variable, like "a".
 class VariableExprAST : public ExprAST {
   std::string Name;
 
 public:
   VariableExprAST(const std::string &Name) : Name(Name) {}
+
   Value *codegen() override;
 };
 
 /// BinaryExprAST - Expression class for a binary operator.
 class BinaryExprAST : public ExprAST {
   char Op;
   std::unique_ptr<ExprAST> LHS, RHS;
 
 public:
   BinaryExprAST(char Op, std::unique_ptr<ExprAST> LHS,
                 std::unique_ptr<ExprAST> RHS)
       : Op(Op), LHS(std::move(LHS)), RHS(std::move(RHS)) {}
+
   Value *codegen() override;
 };
 
 /// CallExprAST - Expression class for function calls.
 class CallExprAST : public ExprAST {
   std::string Callee;
   std::vector<std::unique_ptr<ExprAST>> Args;
 
 public:
   CallExprAST(const std::string &Callee,
               std::vector<std::unique_ptr<ExprAST>> Args)
       : Callee(Callee), Args(std::move(Args)) {}
+
   Value *codegen() override;
 };
 
 /// PrototypeAST - This class represents the "prototype" for a function,
 /// which captures its name, and its argument names (thus implicitly the number
 /// of arguments the function takes).
 class PrototypeAST {
   std::string Name;
   std::vector<std::string> Args;
 
 public:
   PrototypeAST(const std::string &Name, std::vector<std::string> Args)
       : Name(Name), Args(std::move(Args)) {}
+
   Function *codegen();
   const std::string &getName() const { return Name; }
 };
 
 /// FunctionAST - This class represents a function definition itself.
 class FunctionAST {
   std::unique_ptr<PrototypeAST> Proto;
   std::unique_ptr<ExprAST> Body;
 
 public:
   FunctionAST(std::unique_ptr<PrototypeAST> Proto,
               std::unique_ptr<ExprAST> Body)
       : Proto(std::move(Proto)), Body(std::move(Body)) {}
+
   Function *codegen();
 };
+
 } // end anonymous namespace
 
 //===----------------------------------------------------------------------===//
 // Parser
 //===----------------------------------------------------------------------===//
 
 /// CurTok/getNextToken - Provide a simple token buffer.  CurTok is the current
 /// token the parser is looking at.  getNextToken reads another token from the

examples/Kaleidoscope/Chapter5/toy.cpp

 #include "llvm/IR/Module.h"
 #include "llvm/IR/Type.h"
 #include "llvm/IR/Verifier.h"
 #include "llvm/Support/TargetSelect.h"
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/Transforms/Scalar.h"
 #include "llvm/Transforms/Scalar/GVN.h"
 #include "../include/KaleidoscopeJIT.h"
+#include <algorithm>
 #include <cassert>
 #include <cctype>
 #include <cstdint>
 #include <cstdio>
 #include <cstdlib>
 #include <map>
 #include <memory>
 #include <string>
static int gettok() {
   int ThisChar = LastChar;
   LastChar = getchar();
   return ThisChar;
 }
 
 //===----------------------------------------------------------------------===//
 // Abstract Syntax Tree (aka Parse Tree)
 //===----------------------------------------------------------------------===//
+
 namespace {
+
 /// ExprAST - Base class for all expression nodes.
 class ExprAST {
 public:
-  virtual ~ExprAST() {}
+  virtual ~ExprAST() = default;
+
   virtual Value *codegen() = 0;
 };
 
 /// NumberExprAST - Expression class for numeric literals like "1.0".
 class NumberExprAST : public ExprAST {
   double Val;
 
 public:
   NumberExprAST(double Val) : Val(Val) {}
+
   Value *codegen() override;
 };
 
 /// VariableExprAST - Expression class for referencing a variable, like "a".
 class VariableExprAST : public ExprAST {
   std::string Name;
 
 public:
   VariableExprAST(const std::string &Name) : Name(Name) {}
+
   Value *codegen() override;
 };
 
 /// BinaryExprAST - Expression class for a binary operator.
 class BinaryExprAST : public ExprAST {
   char Op;
   std::unique_ptr<ExprAST> LHS, RHS;
 
 public:
   BinaryExprAST(char Op, std::unique_ptr<ExprAST> LHS,
                 std::unique_ptr<ExprAST> RHS)
       : Op(Op), LHS(std::move(LHS)), RHS(std::move(RHS)) {}
+
   Value *codegen() override;
 };
 
 /// CallExprAST - Expression class for function calls.
 class CallExprAST : public ExprAST {
   std::string Callee;
   std::vector<std::unique_ptr<ExprAST>> Args;
 
 public:
   CallExprAST(const std::string &Callee,
               std::vector<std::unique_ptr<ExprAST>> Args)
       : Callee(Callee), Args(std::move(Args)) {}
+
   Value *codegen() override;
 };
 
 /// IfExprAST - Expression class for if/then/else.
 class IfExprAST : public ExprAST {
   std::unique_ptr<ExprAST> Cond, Then, Else;
 
 public:
   IfExprAST(std::unique_ptr<ExprAST> Cond, std::unique_ptr<ExprAST> Then,
             std::unique_ptr<ExprAST> Else)
       : Cond(std::move(Cond)), Then(std::move(Then)), Else(std::move(Else)) {}
+
   Value *codegen() override;
 };
 
 /// ForExprAST - Expression class for for/in.
 class ForExprAST : public ExprAST {
   std::string VarName;
   std::unique_ptr<ExprAST> Start, End, Step, Body;
 
 public:
   ForExprAST(const std::string &VarName, std::unique_ptr<ExprAST> Start,
              std::unique_ptr<ExprAST> End, std::unique_ptr<ExprAST> Step,
              std::unique_ptr<ExprAST> Body)
       : VarName(VarName), Start(std::move(Start)), End(std::move(End)),
         Step(std::move(Step)), Body(std::move(Body)) {}
+
   Value *codegen() override;
 };
 
 /// PrototypeAST - This class represents the "prototype" for a function,
 /// which captures its name, and its argument names (thus implicitly the number
 /// of arguments the function takes).
 class PrototypeAST {
   std::string Name;
   std::vector<std::string> Args;
 
 public:
   PrototypeAST(const std::string &Name, std::vector<std::string> Args)
       : Name(Name), Args(std::move(Args)) {}
+
   Function *codegen();
   const std::string &getName() const { return Name; }
 };
 
 /// FunctionAST - This class represents a function definition itself.
 class FunctionAST {
   std::unique_ptr<PrototypeAST> Proto;
   std::unique_ptr<ExprAST> Body;
 
 public:
   FunctionAST(std::unique_ptr<PrototypeAST> Proto,
               std::unique_ptr<ExprAST> Body)
       : Proto(std::move(Proto)), Body(std::move(Body)) {}
+
   Function *codegen();
 };
+
 } // end anonymous namespace
 
 //===----------------------------------------------------------------------===//
 // Parser
 //===----------------------------------------------------------------------===//
 
 /// CurTok/getNextToken - Provide a simple token buffer.  CurTok is the current
 /// token the parser is looking at.  getNextToken reads another token from the

examples/Kaleidoscope/Chapter6/toy.cpp

 #include "llvm/IR/Module.h"
 #include "llvm/IR/Type.h"
 #include "llvm/IR/Verifier.h"
 #include "llvm/Support/TargetSelect.h"
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/Transforms/Scalar.h"
 #include "llvm/Transforms/Scalar/GVN.h"
 #include "../include/KaleidoscopeJIT.h"
+#include <algorithm>
 #include <cassert>
 #include <cctype>
 #include <cstdint>
 #include <cstdio>
 #include <cstdlib>
 #include <map>
 #include <memory>
 #include <string>
static int gettok() {
   int ThisChar = LastChar;
   LastChar = getchar();
   return ThisChar;
 }
 
 //===----------------------------------------------------------------------===//
 // Abstract Syntax Tree (aka Parse Tree)
 //===----------------------------------------------------------------------===//
+
 namespace {
+
 /// ExprAST - Base class for all expression nodes.
 class ExprAST {
 public:
-  virtual ~ExprAST() {}
+  virtual ~ExprAST() = default;
+
   virtual Value *codegen() = 0;
 };
 
 /// NumberExprAST - Expression class for numeric literals like "1.0".
 class NumberExprAST : public ExprAST {
   double Val;
 
 public:
   NumberExprAST(double Val) : Val(Val) {}
+
   Value *codegen() override;
 };
 
 /// VariableExprAST - Expression class for referencing a variable, like "a".
 class VariableExprAST : public ExprAST {
   std::string Name;
 
 public:
   VariableExprAST(const std::string &Name) : Name(Name) {}
+
   Value *codegen() override;
 };
 
 /// UnaryExprAST - Expression class for a unary operator.
 class UnaryExprAST : public ExprAST {
   char Opcode;
   std::unique_ptr<ExprAST> Operand;
 
 public:
   UnaryExprAST(char Opcode, std::unique_ptr<ExprAST> Operand)
       : Opcode(Opcode), Operand(std::move(Operand)) {}
+
   Value *codegen() override;
 };
 
 /// BinaryExprAST - Expression class for a binary operator.
 class BinaryExprAST : public ExprAST {
   char Op;
   std::unique_ptr<ExprAST> LHS, RHS;
 
 public:
   BinaryExprAST(char Op, std::unique_ptr<ExprAST> LHS,
                 std::unique_ptr<ExprAST> RHS)
       : Op(Op), LHS(std::move(LHS)), RHS(std::move(RHS)) {}
+
   Value *codegen() override;
 };
 
 /// CallExprAST - Expression class for function calls.
 class CallExprAST : public ExprAST {
   std::string Callee;
   std::vector<std::unique_ptr<ExprAST>> Args;
 
 public:
   CallExprAST(const std::string &Callee,
               std::vector<std::unique_ptr<ExprAST>> Args)
       : Callee(Callee), Args(std::move(Args)) {}
+
   Value *codegen() override;
 };
 
 /// IfExprAST - Expression class for if/then/else.
 class IfExprAST : public ExprAST {
   std::unique_ptr<ExprAST> Cond, Then, Else;
 
 public:
   IfExprAST(std::unique_ptr<ExprAST> Cond, std::unique_ptr<ExprAST> Then,
             std::unique_ptr<ExprAST> Else)
       : Cond(std::move(Cond)), Then(std::move(Then)), Else(std::move(Else)) {}
+
   Value *codegen() override;
 };
 
 /// ForExprAST - Expression class for for/in.
 class ForExprAST : public ExprAST {
   std::string VarName;
   std::unique_ptr<ExprAST> Start, End, Step, Body;
 
 public:
   ForExprAST(const std::string &VarName, std::unique_ptr<ExprAST> Start,
              std::unique_ptr<ExprAST> End, std::unique_ptr<ExprAST> Step,
              std::unique_ptr<ExprAST> Body)
       : VarName(VarName), Start(std::move(Start)), End(std::move(End)),
         Step(std::move(Step)), Body(std::move(Body)) {}
+
   Value *codegen() override;
 };
 
 /// PrototypeAST - This class represents the "prototype" for a function,
 /// which captures its name, and its argument names (thus implicitly the number
 /// of arguments the function takes), as well as if it is an operator.
 class PrototypeAST {
   std::string Name;
   std::vector<std::string> Args;
   bool IsOperator;
   unsigned Precedence; // Precedence if a binary op.
 
 public:
   PrototypeAST(const std::string &Name, std::vector<std::string> Args,
                bool IsOperator = false, unsigned Prec = 0)
       : Name(Name), Args(std::move(Args)), IsOperator(IsOperator),
         Precedence(Prec) {}
+
   Function *codegen();
   const std::string &getName() const { return Name; }
 
   bool isUnaryOp() const { return IsOperator && Args.size() == 1; }
   bool isBinaryOp() const { return IsOperator && Args.size() == 2; }
 
   char getOperatorName() const {
     assert(isUnaryOp() || isBinaryOp());
     return Name[Name.size() - 1];
   }
 
   unsigned getBinaryPrecedence() const { return Precedence; }
 };
 
 /// FunctionAST - This class represents a function definition itself.
 class FunctionAST {
   std::unique_ptr<PrototypeAST> Proto;
   std::unique_ptr<ExprAST> Body;
 
 public:
   FunctionAST(std::unique_ptr<PrototypeAST> Proto,
               std::unique_ptr<ExprAST> Body)
       : Proto(std::move(Proto)), Body(std::move(Body)) {}
+
   Function *codegen();
 };
+
 } // end anonymous namespace
 
 //===----------------------------------------------------------------------===//
 // Parser
 //===----------------------------------------------------------------------===//
 
 /// CurTok/getNextToken - Provide a simple token buffer.  CurTok is the current
 /// token the parser is looking at.  getNextToken reads another token from the

examples/Kaleidoscope/Chapter7/toy.cpp

 #include "llvm/IR/Module.h"
 #include "llvm/IR/Type.h"
 #include "llvm/IR/Verifier.h"
 #include "llvm/Support/TargetSelect.h"
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/Transforms/Scalar.h"
 #include "llvm/Transforms/Scalar/GVN.h"
 #include "../include/KaleidoscopeJIT.h"
+#include <algorithm>
 #include <cassert>
 #include <cctype>
 #include <cstdint>
 #include <cstdio>
 #include <cstdlib>
 #include <map>
 #include <memory>
 #include <string>
static int gettok() {
   int ThisChar = LastChar;
   LastChar = getchar();
   return ThisChar;
 }
 
 //===----------------------------------------------------------------------===//
 // Abstract Syntax Tree (aka Parse Tree)
 //===----------------------------------------------------------------------===//
+
 namespace {
+
 /// ExprAST - Base class for all expression nodes.
 class ExprAST {
 public:
-  virtual ~ExprAST() {}
+  virtual ~ExprAST() = default;
+
   virtual Value *codegen() = 0;
 };
 
 /// NumberExprAST - Expression class for numeric literals like "1.0".
 class NumberExprAST : public ExprAST {
   double Val;
 
 public:
   NumberExprAST(double Val) : Val(Val) {}
+
   Value *codegen() override;
 };
 
 /// VariableExprAST - Expression class for referencing a variable, like "a".
 class VariableExprAST : public ExprAST {
   std::string Name;
 
 public:
   VariableExprAST(const std::string &Name) : Name(Name) {}
-  const std::string &getName() const { return Name; }
+
   Value *codegen() override;
+  const std::string &getName() const { return Name; }
 };
 
 /// UnaryExprAST - Expression class for a unary operator.
 class UnaryExprAST : public ExprAST {
   char Opcode;
   std::unique_ptr<ExprAST> Operand;
 
 public:
   UnaryExprAST(char Opcode, std::unique_ptr<ExprAST> Operand)
       : Opcode(Opcode), Operand(std::move(Operand)) {}
+
   Value *codegen() override;
 };
 
 /// BinaryExprAST - Expression class for a binary operator.
 class BinaryExprAST : public ExprAST {
   char Op;
   std::unique_ptr<ExprAST> LHS, RHS;
 
 public:
   BinaryExprAST(char Op, std::unique_ptr<ExprAST> LHS,
                 std::unique_ptr<ExprAST> RHS)
       : Op(Op), LHS(std::move(LHS)), RHS(std::move(RHS)) {}
+
   Value *codegen() override;
 };
 
 /// CallExprAST - Expression class for function calls.
 class CallExprAST : public ExprAST {
   std::string Callee;
   std::vector<std::unique_ptr<ExprAST>> Args;
 
 public:
   CallExprAST(const std::string &Callee,
               std::vector<std::unique_ptr<ExprAST>> Args)
       : Callee(Callee), Args(std::move(Args)) {}
+
   Value *codegen() override;
 };
 
 /// IfExprAST - Expression class for if/then/else.
 class IfExprAST : public ExprAST {
   std::unique_ptr<ExprAST> Cond, Then, Else;
 
 public:
   IfExprAST(std::unique_ptr<ExprAST> Cond, std::unique_ptr<ExprAST> Then,
             std::unique_ptr<ExprAST> Else)
       : Cond(std::move(Cond)), Then(std::move(Then)), Else(std::move(Else)) {}
+
   Value *codegen() override;
 };
 
 /// ForExprAST - Expression class for for/in.
 class ForExprAST : public ExprAST {
   std::string VarName;
   std::unique_ptr<ExprAST> Start, End, Step, Body;
 
 public:
   ForExprAST(const std::string &VarName, std::unique_ptr<ExprAST> Start,
              std::unique_ptr<ExprAST> End, std::unique_ptr<ExprAST> Step,
              std::unique_ptr<ExprAST> Body)
       : VarName(VarName), Start(std::move(Start)), End(std::move(End)),
         Step(std::move(Step)), Body(std::move(Body)) {}
+
   Value *codegen() override;
 };
 
 /// VarExprAST - Expression class for var/in
 class VarExprAST : public ExprAST {
   std::vector<std::pair<std::string, std::unique_ptr<ExprAST>>> VarNames;
   std::unique_ptr<ExprAST> Body;
 
 public:
   VarExprAST(
       std::vector<std::pair<std::string, std::unique_ptr<ExprAST>>> VarNames,
       std::unique_ptr<ExprAST> Body)
       : VarNames(std::move(VarNames)), Body(std::move(Body)) {}
+
   Value *codegen() override;
 };
 
 /// PrototypeAST - This class represents the "prototype" for a function,
 /// which captures its name, and its argument names (thus implicitly the number
 /// of arguments the function takes), as well as if it is an operator.
 class PrototypeAST {
   std::string Name;
   std::vector<std::string> Args;
   bool IsOperator;
   unsigned Precedence; // Precedence if a binary op.
 
 public:
   PrototypeAST(const std::string &Name, std::vector<std::string> Args,
                bool IsOperator = false, unsigned Prec = 0)
       : Name(Name), Args(std::move(Args)), IsOperator(IsOperator),
         Precedence(Prec) {}
+
   Function *codegen();
   const std::string &getName() const { return Name; }
 
   bool isUnaryOp() const { return IsOperator && Args.size() == 1; }
   bool isBinaryOp() const { return IsOperator && Args.size() == 2; }
 
   char getOperatorName() const {
     assert(isUnaryOp() || isBinaryOp());
     return Name[Name.size() - 1];
   }
 
   unsigned getBinaryPrecedence() const { return Precedence; }
 };
 
 /// FunctionAST - This class represents a function definition itself.
 class FunctionAST {
   std::unique_ptr<PrototypeAST> Proto;
   std::unique_ptr<ExprAST> Body;
 
 public:
   FunctionAST(std::unique_ptr<PrototypeAST> Proto,
               std::unique_ptr<ExprAST> Body)
       : Proto(std::move(Proto)), Body(std::move(Body)) {}
+
   Function *codegen();
 };
+
 } // end anonymous namespace
 
 //===----------------------------------------------------------------------===//
 // Parser
 //===----------------------------------------------------------------------===//
 
 /// CurTok/getNextToken - Provide a simple token buffer.  CurTok is the current
 /// token the parser is looking at.  getNextToken reads another token from the

examples/Kaleidoscope/Chapter8/toy.cpp

 #include "llvm/ADT/APFloat.h"
+#include "llvm/ADT/Optional.h"
 #include "llvm/ADT/STLExtras.h"
-#include "llvm/ADT/SmallVector.h"
-#include "llvm/Analysis/Passes.h"
+#include "llvm/IR/BasicBlock.h"
+#include "llvm/IR/Constants.h"
+#include "llvm/IR/DerivedTypes.h"
+#include "llvm/IR/Function.h"
+#include "llvm/IR/Instructions.h"
 #include "llvm/IR/IRBuilder.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/LegacyPassManager.h"
-#include "llvm/IR/Metadata.h"
 #include "llvm/IR/Module.h"
 #include "llvm/IR/Type.h"
 #include "llvm/IR/Verifier.h"
 #include "llvm/Support/FileSystem.h"
+#include "llvm/Support/Host.h"
+#include "llvm/Support/raw_ostream.h"
 #include "llvm/Support/TargetRegistry.h"
 #include "llvm/Support/TargetSelect.h"
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/Target/TargetOptions.h"
-#include "llvm/Transforms/Scalar.h"
+#include <algorithm>
+#include <cassert>
 #include <cctype>
 #include <cstdio>
 #include <cstdlib>
 #include <map>
 #include <memory>
 #include <string>
+#include <system_error>
 #include <utility>
 #include <vector>
 
 using namespace llvm;
 using namespace llvm::sys;
 
 //===----------------------------------------------------------------------===//
 // Lexer
static int gettok() {
   int ThisChar = LastChar;
   LastChar = getchar();
   return ThisChar;
 }
 
 //===----------------------------------------------------------------------===//
 // Abstract Syntax Tree (aka Parse Tree)
 //===----------------------------------------------------------------------===//
+
 namespace {
+
 /// ExprAST - Base class for all expression nodes.
 class ExprAST {
 public:
-  virtual ~ExprAST() {}
+  virtual ~ExprAST() = default;
+
   virtual Value *codegen() = 0;
 };
 
 /// NumberExprAST - Expression class for numeric literals like "1.0".
 class NumberExprAST : public ExprAST {
   double Val;
 
 public:
   NumberExprAST(double Val) : Val(Val) {}
+
   Value *codegen() override;
 };
 
 /// VariableExprAST - Expression class for referencing a variable, like "a".
 class VariableExprAST : public ExprAST {
   std::string Name;
 
 public:
   VariableExprAST(const std::string &Name) : Name(Name) {}
-  const std::string &getName() const { return Name; }
+
   Value *codegen() override;
+  const std::string &getName() const { return Name; }
 };
 
 /// UnaryExprAST - Expression class for a unary operator.
 class UnaryExprAST : public ExprAST {
   char Opcode;
   std::unique_ptr<ExprAST> Operand;
 
 public:
   UnaryExprAST(char Opcode, std::unique_ptr<ExprAST> Operand)
       : Opcode(Opcode), Operand(std::move(Operand)) {}
+
   Value *codegen() override;
 };
 
 /// BinaryExprAST - Expression class for a binary operator.
 class BinaryExprAST : public ExprAST {
   char Op;
   std::unique_ptr<ExprAST> LHS, RHS;
 
 public:
   BinaryExprAST(char Op, std::unique_ptr<ExprAST> LHS,
                 std::unique_ptr<ExprAST> RHS)
       : Op(Op), LHS(std::move(LHS)), RHS(std::move(RHS)) {}
+
   Value *codegen() override;
 };
 
 /// CallExprAST - Expression class for function calls.
 class CallExprAST : public ExprAST {
   std::string Callee;
   std::vector<std::unique_ptr<ExprAST>> Args;
 
 public:
   CallExprAST(const std::string &Callee,
               std::vector<std::unique_ptr<ExprAST>> Args)
       : Callee(Callee), Args(std::move(Args)) {}
+
   Value *codegen() override;
 };
 
 /// IfExprAST - Expression class for if/then/else.
 class IfExprAST : public ExprAST {
   std::unique_ptr<ExprAST> Cond, Then, Else;
 
 public:
   IfExprAST(std::unique_ptr<ExprAST> Cond, std::unique_ptr<ExprAST> Then,
             std::unique_ptr<ExprAST> Else)
       : Cond(std::move(Cond)), Then(std::move(Then)), Else(std::move(Else)) {}
+
   Value *codegen() override;
 };
 
 /// ForExprAST - Expression class for for/in.
 class ForExprAST : public ExprAST {
   std::string VarName;
   std::unique_ptr<ExprAST> Start, End, Step, Body;
 
 public:
   ForExprAST(const std::string &VarName, std::unique_ptr<ExprAST> Start,
              std::unique_ptr<ExprAST> End, std::unique_ptr<ExprAST> Step,
              std::unique_ptr<ExprAST> Body)
       : VarName(VarName), Start(std::move(Start)), End(std::move(End)),
         Step(std::move(Step)), Body(std::move(Body)) {}
+
   Value *codegen() override;
 };
 
 /// VarExprAST - Expression class for var/in
 class VarExprAST : public ExprAST {
   std::vector<std::pair<std::string, std::unique_ptr<ExprAST>>> VarNames;
   std::unique_ptr<ExprAST> Body;
 
 public:
   VarExprAST(
       std::vector<std::pair<std::string, std::unique_ptr<ExprAST>>> VarNames,
       std::unique_ptr<ExprAST> Body)
       : VarNames(std::move(VarNames)), Body(std::move(Body)) {}
+
   Value *codegen() override;
 };
 
 /// PrototypeAST - This class represents the "prototype" for a function,
 /// which captures its name, and its argument names (thus implicitly the number
 /// of arguments the function takes), as well as if it is an operator.
 class PrototypeAST {
   std::string Name;
   std::vector<std::string> Args;
   bool IsOperator;
   unsigned Precedence; // Precedence if a binary op.
 
 public:
   PrototypeAST(const std::string &Name, std::vector<std::string> Args,
                bool IsOperator = false, unsigned Prec = 0)
       : Name(Name), Args(std::move(Args)), IsOperator(IsOperator),
         Precedence(Prec) {}
+
   Function *codegen();
   const std::string &getName() const { return Name; }
 
   bool isUnaryOp() const { return IsOperator && Args.size() == 1; }
   bool isBinaryOp() const { return IsOperator && Args.size() == 2; }
 
   char getOperatorName() const {
     assert(isUnaryOp() || isBinaryOp());
     return Name[Name.size() - 1];
   }
 
   unsigned getBinaryPrecedence() const { return Precedence; }
 };
 
 /// FunctionAST - This class represents a function definition itself.
 class FunctionAST {
   std::unique_ptr<PrototypeAST> Proto;
   std::unique_ptr<ExprAST> Body;
 
 public:
   FunctionAST(std::unique_ptr<PrototypeAST> Proto,
               std::unique_ptr<ExprAST> Body)
       : Proto(std::move(Proto)), Body(std::move(Body)) {}
+
   Function *codegen();
 };
+
 } // end anonymous namespace
 
 //===----------------------------------------------------------------------===//
 // Parser
 //===----------------------------------------------------------------------===//
 
 /// CurTok/getNextToken - Provide a simple token buffer.  CurTok is the current
 /// token the parser is looking at.  getNextToken reads another token from the