feat: no VoidValue, just Void type

include/ir/ir.hpp

@@ -54,7 +54,7 @@ namespace IR
                 argRegs.Push(arg);
             }
             // TODO: gather return type of the function
-            auto dst = VoidValue();
+            auto dst = AllocateNamed<Instruction>(new ValueHandle::Type {ValueHandle::Type::Kind::Void});
             m_ops->Push(new CallOp(dst, fn->name(), argRegs.view()));
             return dst;
         }
@@ -75,7 +75,7 @@ namespace IR
             }
 
             assert(0 && "unreachable");
-            return reinterpret_cast<ValueHandle *>(new Void());
+            return nullptr;
         }
 
         ValueHandle *ParseExpression(const Node *expression)
@@ -187,11 +187,6 @@ namespace IR
             return new V(ValueHandle::kNoId, std::forward<Args>(args)...);
         }
 
-        ValueHandle *VoidValue()
-        {
-            return new Void();
-        }
-
     private:
         const Node *m_root = nullptr;
 

include/ir/ops.hpp

@@ -99,7 +99,7 @@ namespace IR
         {
             StringBuilder sb;
             sb.AppendIndent(indent);
-            sb << result()->Format() << " = load " << m_ptr->Format();
+            sb << result()->Format() << " = load " << result()->GetType()->Format() << ", " << m_ptr->Format();
             return sb.view();
         }
 

include/ir/value.hpp

@@ -129,27 +129,6 @@ namespace IR
         Type *m_value_typ;
     };
 
-    class Void : public ValueHandle
-    {
-    public:
-        Void()
-            : ValueHandle()
-        {
-            m_type = new Type{Type::Kind::Void};
-        }
-
-        const Type *GetType() const override { return m_type; }
-
-    public:
-        virtual StringView Format() const override
-        {
-            return m_type->Format();
-        }
-
-    private:
-        Type *m_type;
-    };
-
     class Instruction : public ValueHandle
     {
     public: