LLVM Namespace Value

The base class that is extended to:

• LLVM Namespace Function
• LLVM Namespace BasicBlock
• Instruction
• Result of intermediate computation Each of LLVM codegen’s methods returns a Value * object which represents the virtual register containing an expressions result.

Creating a Value codegen

Within some AST C++ Class

class ExprAST {
public:
  virtual ~ExprAST() = default;
  virtual Value *codegen() = 0;
};