[IR]重构数组地址相关指令

增加GEP指令以及相关方法
新增数组Array Type
删除无用指令(GetSubArray,LA)
删除冗余类定义(Lval)
修复中间代码生成逻辑
测试通过所以test目录下的文件
TODO:后端展开数组计算地址仅需要针对GEP指令展开

src/IR.cpp

@@ -49,6 +49,11 @@ auto Type::getFunctionType(Type *returnType, const std::vector<Type *> &paramTyp
   return FunctionType::get(returnType, paramTypes);
 }
 
+auto Type::getArrayType(Type *elementType, unsigned numElements) -> Type * {
+  // forward to ArrayType
+  return ArrayType::get(elementType, numElements);
+}
+
 auto Type::getSize() const -> unsigned {
   switch (kind) {
     case kInt:
@@ -58,6 +63,10 @@ auto Type::getSize() const -> unsigned {
     case kPointer:
     case kFunction:
       return 8;
+    case Kind::kArray: {
+      const ArrayType* arrType = static_cast<const ArrayType*>(this);
+      return arrType->getElementType()->getSize() * arrType->getNumElements();
+    }
     case kVoid:
       return 0;
   }
@@ -95,6 +104,11 @@ FunctionType*FunctionType::get(Type *returnType, const std::vector<Type *> &para
   return result.first->get();
 }
 
+ArrayType *ArrayType::get(Type *elementType, unsigned numElements) {
+  // TODO:可以考虑在这里添加缓存，避免重复创建相同的数组类型
+  return new ArrayType(elementType, numElements);
+}
+
 void Value::replaceAllUsesWith(Value *value) {
   for (auto &use : uses) {
     use->getUser()->setOperand(use->getIndex(), value);
@@ -465,44 +479,7 @@ Function * Function::clone(const std::string &suffix) const  {
         break;
       }
 
-      case Instruction::kLa: {
-        auto oldLaInst = dynamic_cast<LaInst *>(inst);
-        auto oldPointer = oldLaInst->getPointer();
-        Value *newPointer;
-        std::vector<Value *> newIndices;
-        newPointer = oldNewValueMap.at(oldPointer);
-
-        for (const auto &index : oldLaInst->getIndices()) {
-          newIndices.emplace_back(oldNewValueMap.at(index->getValue()));
-        }
-        ss << oldLaInst->getName() << suffix;
-        auto newLaInst = new LaInst(newPointer, newIndices, oldNewBlockMap.at(oldLaInst->getParent()), ss.str());
-        ss.str("");
-        oldNewValueMap.emplace(oldLaInst, newLaInst);
-        break;
-      }
-
-      case Instruction::kGetSubArray: {
-        auto oldGetSubArrayInst = dynamic_cast<GetSubArrayInst *>(inst);
-        auto oldFather = oldGetSubArrayInst->getFatherArray();
-        auto oldChild = oldGetSubArrayInst->getChildArray();
-        Value *newFather;
-        Value *newChild;
-        std::vector<Value *> newIndices;
-        newFather = oldNewValueMap.at(oldFather);
-        newChild = oldNewValueMap.at(oldChild);
-
-        for (const auto &index : oldGetSubArrayInst->getIndices()) {
-          newIndices.emplace_back(oldNewValueMap.at(index->getValue()));
-        }
-        ss << oldGetSubArrayInst->getName() << suffix;
-        auto newGetSubArrayInst =
-            new GetSubArrayInst(dynamic_cast<LVal *>(newFather), dynamic_cast<LVal *>(newChild), newIndices,
-                                oldNewBlockMap.at(oldGetSubArrayInst->getParent()), ss.str());
-        ss.str("");
-        oldNewValueMap.emplace(oldGetSubArrayInst, newGetSubArrayInst);
-        break;
-      }
+      // TODO：复制GEP指令
 
       case Instruction::kMemset: {
         auto oldMemsetInst = dynamic_cast<MemsetInst *>(inst);