通过了test_case下的测试，修改测试脚本由于不同平台换行符的差异导致测试失败的问题

实现合并

command.md

@@ -0,0 +1,78 @@
+## Lab1
+
+# 1.构建
+cmake -S . -B build -DCMAKE_BUILD_TYPE=Release -DCOMPILER_PARSE_ONLY=ON
+cmake --build build -j "$(nproc)"
+
+# 2.单例查看
+./build/bin/compiler --emit-parse-tree test/test_case/functional/simple_add.sy
+
+# 3.批量检查
+find test/test_case -name '*.sy' | sort | while read f; do ./build/bin/compiler --emit-parse-tree "$f" >/dev/null || echo "FAIL $f"; done
+
+
+核心原则：不要在“落后于远端 master”的本地 master 上直接开发和提交。
+
+你以后按这套流程，基本就不会分岔。
+
+**日常标准流程**
+
+1. 每次开始前先同步主干  
+```bash
+git switch master
+git fetch origin
+git pull --ff-only origin master
+```
+
+2. 从最新 master 拉功能分支开发  
+```bash
+git switch -c feature/xxx
+```
+
+3. 开发中频繁提交到功能分支  
+```bash
+git add -A
+git commit -m "feat: xxx"
+```
+
+4. 推送功能分支（不要直接推 master）  
+```bash
+git push -u origin feature/xxx
+```
+
+5. 合并前，先把你的分支“重放”到最新 master 上  
+```bash
+git fetch origin
+git rebase origin/master
+```
+有冲突就解决后：
+```bash
+git add -A
+git rebase --continue
+```
+
+6. 再合并回 master（本地或平台 PR 都可）  
+本地合并推荐：
+```bash
+git switch master
+git pull --ff-only origin master
+git merge --ff-only feature/xxx
+git push origin master
+```
+`--ff-only` 的好处是：只允许线性历史，能最大限度避免分叉和脏 merge。
+
+---
+
+**你这次分岔的根因**
+你的本地 master 没先追上远端 master（远端有新提交），然后直接 merge/push，导致出现两个方向的提交历史。
+
+---
+
+**三条硬规则（记住就行）**
+1. 不在落后状态的 master 上开发。  
+2. 合并前一定 `fetch + rebase origin/master`。  
+3. 推 master 前先 `pull --ff-only`，失败就先处理，不要强推。
+
+---
+
+如果你愿意，我可以给你一份适配你仓库的 Git alias（如 `gsync`, `gstart`, `gfinish`），以后 3 条命令就走完整流程。

doc/Lab2-中间表示生成.md

@@ -20,6 +20,8 @@ Lab2 的目标是在该示例基础上扩展语义覆盖范围，并逐步把更
 - `include/sem/SymbolTable.h`
 - `src/sem/Sema.cpp`
 - `src/sem/SymbolTable.cpp`
+
+
 - `include/ir/IR.h`
 - `src/ir/Context.cpp`
 - `src/ir/Value.cpp`

doc/Lab2-小组协作修改方案.md

@@ -0,0 +1,353 @@
+# Lab2 小组协作修改方案（可直接执行）
+
+## 1. 目标与现状
+
+当前仓库的最小实现只能覆盖：
+
+1. 局部 int 变量的 alloca/load/store。
+2. 整数字面量、变量引用、加法表达式。
+3. return 语句。
+4. 单函数 main 的最小流程。
+
+Lab2 的目标是把语法覆盖扩展到课程要求范围，并通过 IR 验证链路。
+
+统一验收标准：
+
+1. 能生成结构正确的 IR。
+2. 通过脚本运行并和 .out 比对一致。
+3. 最终覆盖 test/test_case 下应测样例。
+
+---
+
+## 2. 团队分工建议
+
+建议至少拆成 4 条工作线并行推进。
+
+### A. IR 基础设施组（你负责）
+
+负责文件：
+
+- include/ir/IR.h
+- src/ir/Instruction.cpp
+- src/ir/IRBuilder.cpp
+- src/ir/Type.cpp
+- src/ir/BasicBlock.cpp
+- src/ir/Function.cpp
+- src/ir/Module.cpp
+- src/ir/IRPrinter.cpp
+
+职责：
+
+1. 补齐 IR 指令与构建接口（算术、比较、分支、调用、内存访问等）。
+2. 保证基本块终结规则与 use-def 关系一致。
+3. 保证 IRPrinter 输出格式可被 llc/clang 工具链接受。
+
+### B. 语义分析组（Sema）
+
+负责文件：
+
+- include/sem/Sema.h
+- include/sem/SymbolTable.h
+- src/sem/Sema.cpp
+- src/sem/SymbolTable.cpp
+- src/sem/ConstEval.cpp
+
+职责：
+
+1. 名称绑定、作用域管理、重复定义与未定义检查。
+2. 常量表达式求值与 const 相关约束。
+3. 为 IRGen 提供稳定的绑定结果。
+
+### C. IR 生成组（IRGen）
+
+负责文件：
+
+- include/irgen/IRGen.h
+- src/irgen/IRGenFunc.cpp
+- src/irgen/IRGenStmt.cpp
+- src/irgen/IRGenExp.cpp
+- src/irgen/IRGenDecl.cpp
+- src/irgen/IRGenDriver.cpp
+
+职责：
+
+1. 按语法树节点生成 IR。
+2. 正确构造控制流图（if/while/break/continue）。
+3. 正确处理函数定义、调用、参数、局部变量与数组访问。
+
+### D. 测试与集成组
+
+负责内容：
+
+- 脚本化回归。
+- 失败样例归因（grammar/sema/irgen/ir/printer 哪层出错）。
+- 每日合并后 smoke test。
+
+---
+
+## 3. 必须先对齐的接口约定（第一天完成）
+
+这一步不做，后面会高频返工。
+
+### 3.1 Sema -> IRGen 约定
+
+1. 变量使用节点如何唯一绑定到声明节点。
+2. 函数符号如何绑定（函数重名、参数信息、返回类型）。
+3. 块作用域遮蔽规则：同名变量按最近作用域优先。
+
+### 3.2 IRGen -> IRBuilder 约定
+
+1. 每类语句/表达式映射到哪些构建接口。
+2. 基本块终结规则：ret/br 后禁止继续在同块插指令。
+3. 比较和逻辑运算的返回类型与约定值。
+4. 调用约定：参数顺序、返回值处理、void 调用行为。
+
+### 3.3 IR -> IRPrinter 约定
+
+1. 新增指令的打印语法。
+2. 类型打印规则（int/float/ptr/array/function）。
+3. 全局对象、函数声明与定义的输出顺序。
+
+### 3.4 IR 第一版接口清单（函数名级别，建议 Day1 冻结）
+
+这份清单用于你先做 src/ir，其他同学按接口跟随开发。
+
+第一批只覆盖 M1 到 M3 的最小闭环，M4 和 M5 另开第二版接口。
+
+1. 当前已存在并继续保留
+
+- IRBuilder.CreateConstInt(int v)
+- IRBuilder.CreateBinary(Opcode op, Value* lhs, Value* rhs, const std::string& name)
+- IRBuilder.CreateAdd(Value* lhs, Value* rhs, const std::string& name)
+- IRBuilder.CreateAllocaI32(const std::string& name)
+- IRBuilder.CreateLoad(Value* ptr, const std::string& name)
+- IRBuilder.CreateStore(Value* val, Value* ptr)
+- IRBuilder.CreateRet(Value* v)
+
+2. 第一版必须新增（M1）
+
+- Opcode 扩展：Div、Mod
+- IRBuilder.CreateSub(Value* lhs, Value* rhs, const std::string& name)
+- IRBuilder.CreateMul(Value* lhs, Value* rhs, const std::string& name)
+- IRBuilder.CreateDiv(Value* lhs, Value* rhs, const std::string& name)
+- IRBuilder.CreateMod(Value* lhs, Value* rhs, const std::string& name)
+- 一元负号先复用 CreateSub(0, x)
+- 一元逻辑非先复用比较接口（见下一条）
+
+3. 第一版建议新增（M1 到 M3）
+
+- CmpOp 枚举：Eq、Ne、Lt、Le、Gt、Ge
+- IRBuilder.CreateCmp(CmpOp op, Value* lhs, Value* rhs, const std::string& name)
+- IRBuilder.CreateBr(BasicBlock* target)
+- IRBuilder.CreateCondBr(Value* cond, BasicBlock* true_bb, BasicBlock* false_bb)
+
+4. 第二版预留（M2）
+
+- IRBuilder.CreateCall(Function* callee, const std::vector<Value*>& args, const std::string& name)
+- Function 需要完整函数签名表示（返回类型 + 形参类型）
+
+5. 基本块终结规则（第一版必须执行）
+
+1. terminator 指令包含 Ret、Br、CondBr。
+2. BasicBlock 一旦出现 terminator，禁止继续追加普通指令。
+3. IRGen 负责在新块上重新设置插入点。
+
+6. 参数与类型约定（第一版）
+
+1. M1 到 M3 阶段先统一为 i32 值语义。
+2. cond 分支条件统一约定为 i32，0 为假，非 0 为真。
+3. CreateBinary 输入输出类型必须一致；不一致直接报错。
+
+7. 打印约定（IRPrinter 第一版）
+
+1. Sub、Mul、Div、Mod、比较、Br、CondBr、Call 必须同步可打印。
+2. 新增指令的打印格式由 IR 组给出单页示例，IRGen 组按示例比对。
+
+8. 接口冻结与变更流程
+
+1. Day1 晚上冻结第一版接口，不再改函数签名。
+2. Day2 到 Day3 只允许修实现 bug，不改接口名字和参数。
+3. 必须改接口时，提前半天发迁移说明并提供一条替代写法。
+
+---
+
+## 4. 分阶段里程碑（按功能从低风险到高风险）
+
+## M1：整数基础表达式与赋值
+
+目标样例：
+
+- test/test_case/functional/simple_add.sy
+- test/test_case/functional/11_add2.sy
+- test/test_case/functional/13_sub2.sy
+- test/test_case/functional/36_op_priority2.sy
+
+完成定义：
+
+1. 支持赋值语句。
+2. 支持一元 + - !。
+3. 支持二元 + - * / %。
+4. 支持比较表达式的语义与 IR 生成。
+
+## M2：函数与作用域
+
+目标样例：
+
+- test/test_case/functional/09_func_defn.sy
+- test/test_case/functional/25_scope3.sy
+
+完成定义：
+
+1. 多函数定义。
+2. 参数传递与函数调用。
+3. 块级作用域与变量遮蔽正确。
+
+## M3：控制流
+
+目标样例：
+
+- test/test_case/functional/29_break.sy
+
+完成定义：
+
+1. if/else。
+2. while。
+3. break/continue（循环栈管理）。
+
+## M4：数组与全局对象
+
+目标样例：
+
+- test/test_case/functional/05_arr_defn4.sy
+- test/test_case/functional/22_matrix_multiply.sy
+
+完成定义：
+
+1. 数组定义、初始化与下标访问。
+2. 全局变量/常量。
+3. constExp 维度与初始化相关检查。
+
+## M5：浮点（若课程阶段要求）
+
+目标样例：
+
+- test/test_case/functional/95_float.sy
+
+完成定义：
+
+1. float 类型与常量。
+2. int/float 隐式转换。
+3. float 运算、比较、控制流条件。
+
+---
+
+## 5. 你负责的 src/ir 详细任务清单
+
+建议按下面顺序提交，每次只做一类能力，便于联调。
+
+### T1. 指令枚举和 IRBuilder 基础扩展
+
+1. 补齐一元/二元整数运算。
+2. 补齐比较与条件分支指令。
+3. 提供统一的 CreateBinary、CreateCmp、CreateBr、CreateCondBr、CreateCall。
+
+### T2. 基本块与终结指令约束
+
+1. BasicBlock 显式记录 terminator。
+2. 插入终结指令后拒绝继续插普通指令。
+3. Function 级别提供校验接口（可用于 debug 断言）。
+
+### T3. 类型与函数签名表达
+
+1. 类型系统支持函数参数和返回类型表达。
+2. 调用点参数个数与签名一致性检查（至少 debug 模式可查）。
+
+### T4. IRPrinter 同步
+
+1. 新增指令全部可打印。
+2. 打印结果可通过 llc。
+3. 保证测试输出稳定（避免不必要随机命名波动）。
+
+### T5. 数组与地址计算（如果 M4 开启）
+
+1. 元素地址计算接口。
+2. 多维下标线性化或 GEP 风格接口。
+
+---
+
+## 6. 每日协作机制（必须执行）
+
+1. 每天固定 15 分钟站会：同步昨天完成、今天计划、阻塞点。
+2. 每个接口变更先发讨论再改，避免主干反复冲突。
+3. 每个里程碑前冻结接口半天，只做修 bug 和联调。
+
+推荐沟通模板：
+
+1. 我改了什么接口。
+2. 旧行为与新行为差异。
+3. 受影响文件。
+4. 调用方需要同步的改动。
+5. 最晚切换时间点。
+
+---
+
+## 7. 分支与提交流程
+
+1. 一人一功能分支，不直接在主分支开发。
+2. 提交粒度小而清晰：一个提交只解决一类问题。
+3. 提交信息建议：feat(ir), fix(irgen), fix(sema), test(lab2)。
+4. 合并前必须附上通过样例列表。
+
+---
+
+## 8. 统一验证命令
+
+构建：
+
+```bash
+cmake -S . -B build -DCMAKE_BUILD_TYPE=Release -DCOMPILER_PARSE_ONLY=OFF
+cmake --build build -j "$(nproc)"
+```
+
+单样例验证：
+
+```bash
+./scripts/verify_ir.sh test/test_case/functional/simple_add.sy test/test_result/function/ir --run
+```
+
+功能样例批量验证：
+
+```bash
+for f in test/test_case/functional/*.sy; do
+  echo "== $f =="
+  ./scripts/verify_ir.sh "$f" test/test_result/function/ir --run || break
+done
+```
+
+---
+
+## 9. 风险与应对
+
+1. 风险：grammar 变更导致 visitor 接口失配。
+应对：变更 grammar 后第一时间重新生成 ANTLR 文件并通知 Sema/IRGen。
+
+2. 风险：IRPrinter 语法偏差导致 llc 失败。
+应对：新增指令时同步补打印和最小样例回归。
+
+3. 风险：组员并行修改同一接口冲突严重。
+应对：接口 owner 机制，IR 接口由 IR 组最终拍板。
+
+4. 风险：只测 simple_add，阶段性误判成功。
+应对：每个里程碑绑定指定样例集，全部通过才进入下一阶段。
+
+---
+
+## 10. 本周可执行排期（示例）
+
+1. Day1：接口对齐会，完成 M1 任务拆分。
+2. Day2：IR 组完成 T1/T2，Sema/IRGen 同步接入。
+3. Day3：打通 M1 全样例。
+4. Day4：推进 M2（函数与作用域）。
+5. Day5：推进 M3（控制流）并做一次集成回归。
+
+如果进度顺利，再进入 M4（数组与全局）。

forIRGenInterfaces.md

@@ -0,0 +1,108 @@
+我先快速读取当前 IRGen 的入口与表达式/语句文件，然后按“节点到接口调用映射”给你一份可以直接交给 IRGen 同学实现的调用说明。
+
+Read [](file:///home/shrink/nudt-compiler-cpp/include/ir/IR.h#320-320), lines 320 to 387
+
+Read [](file:///home/shrink/nudt-compiler-cpp/include/irgen/IRGen.h)
+
+Read [](file:///home/shrink/nudt-compiler-cpp/src/irgen/IRGenExp.cpp)
+
+Read [](file:///home/shrink/nudt-compiler-cpp/src/irgen/IRGenStmt.cpp)
+
+Read [](file:///home/shrink/nudt-compiler-cpp/src/irgen/IRGenFunc.cpp)
+
+可以，下面给你一份面向 IRGen 同学的“如何调用你新增 IR 接口”的实现说明，按落地顺序写。
+
+先看调用边界
+
+1. IRGen 只负责把语法树翻译成 IR，不做符号查找  
+变量和函数绑定依赖 Sema 结果，参考 IRGenExp.cpp 的变量读取流程。  
+2. 所有指令创建都通过 IRBuilder  
+新增接口定义在 IR.h。  
+3. 终结指令规则必须遵守  
+Ret/Br/CondBr 一旦插入当前块，这个块不能再插普通指令，规则在 Instruction.cpp 和 BasicBlock.cpp。
+
+建议 IRGen 调用映射
+
+一、表达式层
+
+1. 加减乘除模
+- a + b: CreateAdd(lhs, rhs, temp)
+- a - b: CreateSub(lhs, rhs, temp)
+- a * b: CreateMul(lhs, rhs, temp)
+- a / b: CreateDiv(lhs, rhs, temp)
+- a % b: CreateMod(lhs, rhs, temp)
+
+2. 比较表达式
+- == != < <= > >= 统一走 CreateCmp(op, lhs, rhs, temp)
+- 返回 i32，约定 0 为假，非 0 为真
+
+3. 一元运算建议
+- -x: CreateSub(const0, x, temp)
+- !x: CreateCmp(Eq, x, const0, temp)
+- +x: 直接返回 x
+
+4. 变量读取和赋值
+- 读取: 先由 Sema 绑定 use 到 decl，再从 storage_map 找槽位，CreateLoad
+- 赋值: EvalExpr(rhs) 后对槽位 CreateStore(rhs_val, slot)
+
+对应修改文件：
+- IRGenExp.cpp
+- IRGenDecl.cpp
+- IRGenStmt.cpp
+
+二、控制流层
+
+1. if/else
+- 创建三个块: then, else, merge
+- cond = EvalExpr(condExp)
+- 当前块插 CreateCondBr(cond, then, else)
+- 切入 then 块生成语句，末尾若未终结则 CreateBr(merge)
+- 切入 else 块同理
+- 最后 SetInsertPoint(merge)
+
+2. while
+- 创建三个块: cond, body, exit
+- 进入前先 CreateBr(cond)
+- cond 块计算条件，CreateCondBr(cond_val, body, exit)
+- body 块生成循环体，若未终结则回跳 CreateBr(cond)
+- 最后 SetInsertPoint(exit)
+
+3. break/continue
+- IRGen 维护循环栈，每层保存 continue_target 和 break_target
+- break 直接 CreateBr(break_target)
+- continue 直接 CreateBr(continue_target)
+
+对应修改文件：
+- IRGenStmt.cpp
+
+三、函数与调用层
+
+1. 函数定义
+- 用 Module.CreateFunction(name, ret_type, param_types) 建函数
+- 入口块 SetInsertPoint(entry)
+- 形参落栈策略建议：每个参数先 alloca，再 store 到本地槽位，后续统一按 load/store 访问
+
+2. 函数调用
+- 先拿到 callee 对应的 Function
+- 实参逐个 EvalExpr 得到 args
+- 调用 CreateCall(callee, args, temp)
+- 若返回值非 void，把返回 Value 继续参与表达式计算
+
+对应修改文件：
+- IRGenFunc.cpp
+- IRGenExp.cpp
+
+四、你要提醒 IRGen 同学的两个关键点
+
+1. 插入点管理  
+每次生成 Br/CondBr/Ret 后，必须切换到新块再继续生成。否则会触发块已终结错误。  
+2. grammar 上下文名先对齐  
+你们当前 IRGen 里还在用 ParenExpContext、AdditiveExpContext 这类命名，实际 grammar 是另一套层级时要先改 Visitor 入口，否则接口再全也接不上。可先核对 SysY.g4 与 IRGen.h。
+
+最小接入顺序
+
+1. 先接表达式算术与比较（M1）  
+2. 再接 if/while/break/continue（M3）  
+3. 再接函数参数和调用（M2）
+
+如果你要，我下一步可以给你一版“按当前 grammar 的具体 visitor 函数名”逐条对照表，IRGen 同学可以直接照着改函数签名和调用点。

include/ir/IR.h

@@ -151,8 +151,35 @@ class ConstantInt : public ConstantValue {
   int value_{};
 };
 
-// 后续还需要扩展更多指令类型。
+// Argument 表示函数的形式参数，作为 Value 在函数体内直接被引用。
-enum class Opcode { Add, Sub, Mul, Alloca, Load, Store, Ret };
+class Argument : public Value {
+ public:
+  Argument(std::shared_ptr<Type> ty, std::string name, size_t index);
+  size_t GetArgIndex() const { return arg_index_; }
+
+ private:
+  size_t arg_index_;
+};
+
+// 第一版 Lab2 需要的指令集合。
+enum class Opcode {
+  Add,
+  Sub,
+  Mul,
+  Div,
+  Mod,
+  Cmp,
+  Br,
+  CondBr,
+  Call,
+  Alloca,
+  Load,
+  Store,
+  Ret,
+  Gep,  // getelementptr：数组元素地址计算
+};
+
+enum class CmpOp { Eq, Ne, Lt, Le, Gt, Ge };
 
 // User 是所有“会使用其他 Value 作为输入”的 IR 对象的抽象基类。
 // 当前实现中只有 Instruction 继承自 User。
@@ -178,6 +205,21 @@ class GlobalValue : public User {
   GlobalValue(std::shared_ptr<Type> ty, std::string name);
 };
 
+// GlobalVariable 代表一个全局整型变量、常量或数组。
+// 标量：打印为 @name = global i32 N。
+// 数组：打印为 @name = global [count x i32] zeroinitializer。
+class GlobalVariable : public GlobalValue {
+ public:
+  GlobalVariable(std::string name, int init_val = 0, int count = 1);
+  int GetInitValue() const { return init_val_; }
+  int GetCount() const { return count_; }
+  bool IsArray() const { return count_ > 1; }
+
+ private:
+  int init_val_;
+  int count_;
+};
+
 class Instruction : public User {
  public:
   Instruction(Opcode op, std::shared_ptr<Type> ty, std::string name = "");
@@ -196,7 +238,19 @@ class BinaryInst : public Instruction {
   BinaryInst(Opcode op, std::shared_ptr<Type> ty, Value* lhs, Value* rhs,
              std::string name);
   Value* GetLhs() const;
- Value* GetRhs() const;
+  Value* GetRhs() const;
+};
+
+class CmpInst : public Instruction {
+ public:
+  CmpInst(CmpOp op, std::shared_ptr<Type> ty, Value* lhs, Value* rhs,
+          std::string name);
+  CmpOp GetCmpOp() const;
+  Value* GetLhs() const;
+  Value* GetRhs() const;
+
+ private:
+  CmpOp cmp_op_;
 };
 
 class ReturnInst : public Instruction {
@@ -207,7 +261,15 @@ class ReturnInst : public Instruction {
 
 class AllocaInst : public Instruction {
  public:
+  // 标量 alloca（分配 1 个 i32）
   AllocaInst(std::shared_ptr<Type> ptr_ty, std::string name);
+  // 数组 alloca（分配 count 个 i32，count 为编译期常量）
+  AllocaInst(std::shared_ptr<Type> ptr_ty, std::string name, int count);
+  int GetCount() const { return count_; }
+  bool IsArray() const { return count_ > 1; }
+
+ private:
+  int count_ = 1;
 };
 
 class LoadInst : public Instruction {
@@ -223,6 +285,40 @@ class StoreInst : public Instruction {
   Value* GetPtr() const;
 };
 
+class BranchInst : public Instruction {
+ public:
+  BranchInst(std::shared_ptr<Type> void_ty, BasicBlock* target);
+  BasicBlock* GetTarget() const;
+};
+
+class CondBranchInst : public Instruction {
+ public:
+  CondBranchInst(std::shared_ptr<Type> void_ty, Value* cond,
+                 BasicBlock* true_bb, BasicBlock* false_bb);
+  Value* GetCond() const;
+  BasicBlock* GetTrueBlock() const;
+  BasicBlock* GetFalseBlock() const;
+};
+
+class CallInst : public Instruction {
+ public:
+  CallInst(std::shared_ptr<Type> ret_ty, Function* callee,
+           std::vector<Value*> args, std::string name);
+  Function* GetCallee() const;
+  size_t GetNumArgs() const;
+  Value* GetArg(size_t index) const;
+};
+
+// GepInst：getelementptr i32, i32* base, i32 index
+// 用于从数组基址 + 线性偏移量计算元素指针。
+class GepInst : public Instruction {
+ public:
+  GepInst(std::shared_ptr<Type> ptr_ty, Value* base, Value* index,
+          std::string name);
+  Value* GetBase() const;
+  Value* GetIndex() const;
+};
+
 // BasicBlock 已纳入 Value 体系，便于后续向更完整 IR 类图靠拢。
 // 当前其类型仍使用 void 作为占位，后续可替换为专门的 label type。
 class BasicBlock : public Value {
@@ -234,6 +330,8 @@ class BasicBlock : public Value {
   const std::vector<std::unique_ptr<Instruction>>& GetInstructions() const;
   const std::vector<BasicBlock*>& GetPredecessors() const;
   const std::vector<BasicBlock*>& GetSuccessors() const;
+  void AddPredecessor(BasicBlock* pred);
+  void AddSuccessor(BasicBlock* succ);
   template <typename T, typename... Args>
   T* Append(Args&&... args) {
     if (HasTerminator()) {
@@ -256,22 +354,30 @@ class BasicBlock : public Value {
 
 // Function 当前也采用了最小实现。
 // 需要特别注意：由于项目里还没有单独的 FunctionType，
-// Function 继承自 Value 后，其 type_ 目前只保存“返回类型”，
+// Function 继承自 Value 后，其 type_ 目前只保存”返回类型”，
-// 并不能完整表达“返回类型 + 形参列表”这一整套函数签名。
+// 并不能完整表达”返回类型 + 形参列表”这一整套函数签名。
-// 这对当前只支持 int main() 的最小 IR 足够，但后续若补普通函数、
-// 形参和调用，通常需要引入专门的函数类型表示。
 class Function : public Value {
  public:
-  // 当前构造函数接收的也是返回类型，而不是完整函数类型。
+  Function(std::string name, std::shared_ptr<Type> ret_type,
-  Function(std::string name, std::shared_ptr<Type> ret_type);
+           std::vector<std::shared_ptr<Type>> param_types = {});
   BasicBlock* CreateBlock(const std::string& name);
   BasicBlock* GetEntry();
   const BasicBlock* GetEntry() const;
+  const std::vector<std::shared_ptr<Type>>& GetParamTypes() const;
+  size_t GetNumParams() const;
+  Argument* GetArgument(size_t index) const;
   const std::vector<std::unique_ptr<BasicBlock>>& GetBlocks() const;
 
+  // 外部函数声明（无函数体，打印为 declare）。
+  void SetExternal(bool v) { is_external_ = v; }
+  bool IsExternal() const { return is_external_; }
+
  private:
   BasicBlock* entry_ = nullptr;
+  std::vector<std::shared_ptr<Type>> param_types_;
+  std::vector<std::unique_ptr<Argument>> args_;
   std::vector<std::unique_ptr<BasicBlock>> blocks_;
+  bool is_external_ = false;
 };
 
 class Module {
@@ -279,13 +385,19 @@ class Module {
   Module() = default;
   Context& GetContext();
   const Context& GetContext() const;
-  // 创建函数时当前只显式传入返回类型，尚未接入完整的 FunctionType。
   Function* CreateFunction(const std::string& name,
-                           std::shared_ptr<Type> ret_type);
+                           std::shared_ptr<Type> ret_type,
+                           std::vector<std::shared_ptr<Type>> param_types = {});
+  Function* FindFunction(const std::string& name) const;
   const std::vector<std::unique_ptr<Function>>& GetFunctions() const;
 
+  GlobalVariable* CreateGlobalVar(const std::string& name, int init_val = 0, int count = 1);
+  GlobalVariable* FindGlobalVar(const std::string& name) const;
+  const std::vector<std::unique_ptr<GlobalVariable>>& GetGlobalVars() const;
+
  private:
   Context context_;
+  std::vector<std::unique_ptr<GlobalVariable>> global_vars_;
   std::vector<std::unique_ptr<Function>> functions_;
 };
 
@@ -300,10 +412,23 @@ class IRBuilder {
   BinaryInst* CreateBinary(Opcode op, Value* lhs, Value* rhs,
                            const std::string& name);
   BinaryInst* CreateAdd(Value* lhs, Value* rhs, const std::string& name);
+  BinaryInst* CreateSub(Value* lhs, Value* rhs, const std::string& name);
+  BinaryInst* CreateMul(Value* lhs, Value* rhs, const std::string& name);
+  BinaryInst* CreateDiv(Value* lhs, Value* rhs, const std::string& name);
+  BinaryInst* CreateMod(Value* lhs, Value* rhs, const std::string& name);
+  CmpInst* CreateCmp(CmpOp op, Value* lhs, Value* rhs, const std::string& name);
   AllocaInst* CreateAllocaI32(const std::string& name);
+  AllocaInst* CreateAllocaArray(int count, const std::string& name);
   LoadInst* CreateLoad(Value* ptr, const std::string& name);
   StoreInst* CreateStore(Value* val, Value* ptr);
+  BranchInst* CreateBr(BasicBlock* target);
+  CondBranchInst* CreateCondBr(Value* cond, BasicBlock* true_bb,
+                               BasicBlock* false_bb);
+  CallInst* CreateCall(Function* callee, const std::vector<Value*>& args,
+                       const std::string& name);
+  GepInst* CreateGep(Value* base, Value* index, const std::string& name);
   ReturnInst* CreateRet(Value* v);
+  ReturnInst* CreateRetVoid();
 
  private:
   Context& ctx_;

include/irgen/IRGen.h

@@ -7,6 +7,7 @@
 #include <memory>
 #include <string>
 #include <unordered_map>
+#include <vector>
 
 #include "SysYBaseVisitor.h"
 #include "SysYParser.h"
@@ -22,6 +23,9 @@ class Value;
 
 class IRGenImpl final : public SysYBaseVisitor {
  public:
+  // const 变量名 -> 编译期整数值，用于数组维度折叠。
+  using ConstEnv = std::unordered_map<std::string, int>;
+
   IRGenImpl(ir::Module& module, const SemanticContext& sema);
 
   std::any visitCompUnit(SysYParser::CompUnitContext* ctx) override;
@@ -29,13 +33,24 @@ class IRGenImpl final : public SysYBaseVisitor {
   std::any visitBlockStmt(SysYParser::BlockStmtContext* ctx) override;
   std::any visitBlockItem(SysYParser::BlockItemContext* ctx) override;
   std::any visitDecl(SysYParser::DeclContext* ctx) override;
+  std::any visitConstDecl(SysYParser::ConstDeclContext* ctx) override;
+  std::any visitConstDef(SysYParser::ConstDefContext* ctx) override;
+  std::any visitVarDecl(SysYParser::VarDeclContext* ctx) override;
   std::any visitStmt(SysYParser::StmtContext* ctx) override;
   std::any visitVarDef(SysYParser::VarDefContext* ctx) override;
   std::any visitReturnStmt(SysYParser::ReturnStmtContext* ctx) override;
-  std::any visitParenExp(SysYParser::ParenExpContext* ctx) override;
+  std::any visitExp(SysYParser::ExpContext* ctx) override;
-  std::any visitNumberExp(SysYParser::NumberExpContext* ctx) override;
+  std::any visitCond(SysYParser::CondContext* ctx) override;
-  std::any visitVarExp(SysYParser::VarExpContext* ctx) override;
+  std::any visitPrimaryExp(SysYParser::PrimaryExpContext* ctx) override;
-  std::any visitAdditiveExp(SysYParser::AdditiveExpContext* ctx) override;
+  std::any visitNumber(SysYParser::NumberContext* ctx) override;
+  std::any visitLValue(SysYParser::LValueContext* ctx) override;
+  std::any visitUnaryExp(SysYParser::UnaryExpContext* ctx) override;
+  std::any visitMulExp(SysYParser::MulExpContext* ctx) override;
+  std::any visitAddExp(SysYParser::AddExpContext* ctx) override;
+  std::any visitRelExp(SysYParser::RelExpContext* ctx) override;
+  std::any visitEqExp(SysYParser::EqExpContext* ctx) override;
+  std::any visitLAndExp(SysYParser::LAndExpContext* ctx) override;
+  std::any visitLOrExp(SysYParser::LOrExpContext* ctx) override;
 
  private:
   enum class BlockFlow {
@@ -43,15 +58,71 @@ class IRGenImpl final : public SysYBaseVisitor {
     Terminated,
   };
 
+  struct LoopTargets {
+    ir::BasicBlock* continue_target;
+    ir::BasicBlock* break_target;
+  };
+
+  // 判断当前是否处于全局作用域（函数外部）。
+  bool IsGlobalScope() const { return func_ == nullptr; }
+
   BlockFlow VisitBlockItemResult(SysYParser::BlockItemContext& item);
   ir::Value* EvalExpr(SysYParser::ExpContext& expr);
+  ir::Value* EvalCond(SysYParser::CondContext& cond);
+  ir::Value* ToBoolValue(ir::Value* v);
+  std::string NextBlockName();
+
+  // 预声明 SysY runtime 外部函数。
+  void DeclareRuntimeFunctions();
+
+  // 根据 sema 绑定或 name 查找局部/全局存储槽位（返回 i32* Value）。
+  // 如果 lvalue 有下标，还会生成 GEP 指令并返回元素指针。
+  ir::Value* ResolveStorage(SysYParser::LValueContext* lvalue);
+
+  // 编译期常量整数求值（用于数组维度）。
+  int EvalConstExpr(SysYParser::ConstExpContext* ctx) const;
+  // 将 ExpContext（即 addExp）按编译期常量求值（用于 funcFParam 维度）。
+  int EvalExpAsConst(SysYParser::ExpContext* ctx) const;
+
+  // 查找变量的数组维度（先查局部，再查全局）。
+  const std::vector<int>* FindArrayDims(const std::string& name) const;
+
+  // 将一组数组下标表达式（已求值为 ir::Value*）折叠为线性偏移 ir::Value*。
+  ir::Value* ComputeLinearIndex(const std::vector<int>& dims,
+                                const std::vector<SysYParser::ExpContext*>& subs);
+
+  // 扁平化 constInitValue 到整数数组（供 const 数组初始化使用）。
+  void FlattenConstInit(SysYParser::ConstInitValueContext* ctx,
+                        const std::vector<int>& dims, int dim_idx,
+                        std::vector<int>& out, int& pos);
+
+  // 扁平化 initValue 到 ir::Value* 数组（供普通数组初始化使用）。
+  void FlattenInit(SysYParser::InitValueContext* ctx,
+                   const std::vector<int>& dims, int dim_idx,
+                   std::vector<ir::Value*>& out, int& pos);
+
+  ir::AllocaInst* CreateEntryAllocaI32(const std::string& name);
+  ir::AllocaInst* CreateEntryAllocaArray(int count, const std::string& name);
 
   ir::Module& module_;
   const SemanticContext& sema_;
   ir::Function* func_;
   ir::IRBuilder builder_;
-  // 名称绑定由 Sema 负责；IRGen 只维护“声明 -> 存储槽位”的代码生成状态。
+  // 声明 -> 存储槽位（局部 alloca 或全局变量，均为 i32*）。
   std::unordered_map<SysYParser::VarDefContext*, ir::Value*> storage_map_;
+  // 名称 -> 槽位（参数、const 变量等不经 sema binding 的后备查找）。
+  std::unordered_map<std::string, ir::Value*> named_storage_;
+  // 全局变量名 -> GlobalVariable*（跨函数持久）。
+  std::unordered_map<std::string, ir::Value*> global_storage_;
+  // 编译期 const 整数环境（全局 + 当前函数）。
+  ConstEnv const_env_;
+  // 数组维度信息：全局数组（跨函数持久）。
+  std::unordered_map<std::string, std::vector<int>> global_array_dims_;
+  // 数组维度信息：局部数组/参数（每函数清空）。
+  std::unordered_map<std::string, std::vector<int>> local_array_dims_;
+  // 逻辑与/或短路求值复用的函数级临时槽位，避免循环中动态 alloca 导致栈膨胀。
+  ir::Value* short_circuit_slot_ = nullptr;
+  std::vector<LoopTargets> loop_stack_;
 };
 
 std::unique_ptr<ir::Module> GenerateIR(SysYParser::CompUnitContext& tree,

include/sem/Sema.h

@@ -1,30 +1,151 @@
-// 基于语法树的语义检查与名称绑定。
+#ifndef SEMANTIC_ANALYSIS_H
-#pragma once
+#define SEMANTIC_ANALYSIS_H
 
+#include <any>
+#include <memory>
+#include <sstream>
+#include <string>
 #include <unordered_map>
+#include <vector>
 
+#include "SymbolTable.h"
+#include "SysYBaseVisitor.h"
 #include "SysYParser.h"
 
+struct ErrorMsg {
+  std::string msg;
+  int line;
+  int column;
+
+  ErrorMsg(std::string m, int l, int c) : msg(std::move(m)), line(l), column(c) {}
+};
+
+class IRGenContext {
+ public:
+  void RecordError(const ErrorMsg& err) { errors_.push_back(err); }
+  const std::vector<ErrorMsg>& GetErrors() const { return errors_; }
+  bool HasError() const { return !errors_.empty(); }
+  void ClearErrors() { errors_.clear(); }
+
+  void SetType(void* ctx, SymbolType type) { node_type_map_[ctx] = type; }
+
+  SymbolType GetType(void* ctx) const {
+    auto it = node_type_map_.find(ctx);
+    return it == node_type_map_.end() ? SymbolType::TYPE_UNKNOWN : it->second;
+  }
+
+  void SetConstVal(void* ctx, const std::any& val) { const_val_map_[ctx] = val; }
+
+  std::any GetConstVal(void* ctx) const {
+    auto it = const_val_map_.find(ctx);
+    return it == const_val_map_.end() ? std::any() : it->second;
+  }
+
+  void EnterLoop() { sym_table_.EnterLoop(); }
+  void ExitLoop() { sym_table_.ExitLoop(); }
+  bool InLoop() const { return sym_table_.InLoop(); }
+
+  bool IsIntType(const std::any& val) const {
+    return val.type() == typeid(long) || val.type() == typeid(int);
+  }
+
+  bool IsFloatType(const std::any& val) const {
+    return val.type() == typeid(double) || val.type() == typeid(float);
+  }
+
+  SymbolType GetCurrentFuncReturnType() const { return current_func_ret_type_; }
+  void SetCurrentFuncReturnType(SymbolType type) { current_func_ret_type_ = type; }
+
+  SymbolTable& GetSymbolTable() { return sym_table_; }
+  const SymbolTable& GetSymbolTable() const { return sym_table_; }
+
+  void EnterScope() { sym_table_.EnterScope(); }
+  void LeaveScope() { sym_table_.LeaveScope(); }
+  size_t GetScopeDepth() const { return sym_table_.GetScopeDepth(); }
+
+ private:
+  SymbolTable sym_table_;
+  std::unordered_map<void*, SymbolType> node_type_map_;
+  std::unordered_map<void*, std::any> const_val_map_;
+  std::vector<ErrorMsg> errors_;
+  SymbolType current_func_ret_type_ = SymbolType::TYPE_UNKNOWN;
+};
+
 class SemanticContext {
  public:
-  void BindVarUse(SysYParser::VarContext* use,
+  void BindVarUse(const SysYParser::LValueContext* use,
                   SysYParser::VarDefContext* decl) {
     var_uses_[use] = decl;
   }
 
   SysYParser::VarDefContext* ResolveVarUse(
-      const SysYParser::VarContext* use) const {
+      const SysYParser::LValueContext* use) const {
     auto it = var_uses_.find(use);
     return it == var_uses_.end() ? nullptr : it->second;
   }
 
  private:
-  std::unordered_map<const SysYParser::VarContext*,
+  std::unordered_map<const SysYParser::LValueContext*, SysYParser::VarDefContext*>
-                     SysYParser::VarDefContext*>
       var_uses_;
 };
 
-// 目前仅检查：
+inline std::string FormatErrMsg(const std::string& msg, int line, int col) {
-// - 变量先声明后使用
+  std::ostringstream oss;
-// - 局部变量不允许重复定义
+  oss << "[行:" << line << ",列:" << col << "] " << msg;
+  return oss.str();
+}
+
+class SemaVisitor : public SysYBaseVisitor {
+ public:
+  explicit SemaVisitor(IRGenContext& ctx, SemanticContext* sema_ctx = nullptr)
+      : ir_ctx_(ctx), sema_ctx_(sema_ctx) {}
+
+  std::any visitCompUnit(SysYParser::CompUnitContext* ctx) override;
+  std::any visitDecl(SysYParser::DeclContext* ctx) override;
+  std::any visitConstDecl(SysYParser::ConstDeclContext* ctx) override;
+  std::any visitBtype(SysYParser::BtypeContext* ctx) override;
+  std::any visitConstDef(SysYParser::ConstDefContext* ctx) override;
+  std::any visitConstInitValue(SysYParser::ConstInitValueContext* ctx) override;
+  std::any visitVarDecl(SysYParser::VarDeclContext* ctx) override;
+  std::any visitVarDef(SysYParser::VarDefContext* ctx) override;
+  std::any visitInitValue(SysYParser::InitValueContext* ctx) override;
+  std::any visitFuncDef(SysYParser::FuncDefContext* ctx) override;
+  std::any visitFuncType(SysYParser::FuncTypeContext* ctx) override;
+  std::any visitFuncFParams(SysYParser::FuncFParamsContext* ctx) override;
+  std::any visitFuncFParam(SysYParser::FuncFParamContext* ctx) override;
+  std::any visitBlockStmt(SysYParser::BlockStmtContext* ctx) override;
+  std::any visitBlockItem(SysYParser::BlockItemContext* ctx) override;
+  std::any visitStmt(SysYParser::StmtContext* ctx) override;
+  std::any visitReturnStmt(SysYParser::ReturnStmtContext* ctx) override;
+  std::any visitExp(SysYParser::ExpContext* ctx) override;
+  std::any visitCond(SysYParser::CondContext* ctx) override;
+  std::any visitLValue(SysYParser::LValueContext* ctx) override;
+  std::any visitPrimaryExp(SysYParser::PrimaryExpContext* ctx) override;
+  std::any visitNumber(SysYParser::NumberContext* ctx) override;
+  std::any visitUnaryExp(SysYParser::UnaryExpContext* ctx) override;
+  std::any visitUnaryOp(SysYParser::UnaryOpContext* ctx) override;
+  std::any visitFuncRParams(SysYParser::FuncRParamsContext* ctx) override;
+  std::any visitMulExp(SysYParser::MulExpContext* ctx) override;
+  std::any visitAddExp(SysYParser::AddExpContext* ctx) override;
+  std::any visitRelExp(SysYParser::RelExpContext* ctx) override;
+  std::any visitEqExp(SysYParser::EqExpContext* ctx) override;
+  std::any visitLAndExp(SysYParser::LAndExpContext* ctx) override;
+  std::any visitLOrExp(SysYParser::LOrExpContext* ctx) override;
+  std::any visitConstExp(SysYParser::ConstExpContext* ctx) override;
+
+  IRGenContext& GetContext() { return ir_ctx_; }
+  const IRGenContext& GetContext() const { return ir_ctx_; }
+
+ private:
+  void RecordNodeError(antlr4::ParserRuleContext* ctx, const std::string& msg);
+
+  IRGenContext& ir_ctx_;
+  SemanticContext* sema_ctx_ = nullptr;
+  SymbolType current_decl_type_ = SymbolType::TYPE_UNKNOWN;
+  bool current_decl_is_const_ = false;
+};
+
+void RunSemanticAnalysis(SysYParser::CompUnitContext* ctx, IRGenContext& ir_ctx);
 SemanticContext RunSema(SysYParser::CompUnitContext& comp_unit);
+
+#endif  // SEMANTIC_ANALYSIS_H

include/sem/SymbolTable.h

@@ -1,17 +1,201 @@
-// 极简符号表：记录局部变量定义点。
+#ifndef SYMBOL_TABLE_H
-#pragma once
+#define SYMBOL_TABLE_H
 
+#include <any>
 #include <string>
+#include <vector>
 #include <unordered_map>
+#include <stack>
+#include <utility>
 
-#include "SysYParser.h"
+// 核心类型枚举
+enum class SymbolType {
+    TYPE_UNKNOWN,   // 未知类型
+    TYPE_INT,       // 整型
+    TYPE_FLOAT,     // 浮点型
+    TYPE_VOID,      // 空类型
+    TYPE_ARRAY,     // 数组类型
+    TYPE_FUNCTION   // 函数类型
+};
+
+// 获取类型名称字符串
+inline const char* SymbolTypeToString(SymbolType type) {
+    switch (type) {
+        case SymbolType::TYPE_INT: return "int";
+        case SymbolType::TYPE_FLOAT: return "float";
+        case SymbolType::TYPE_VOID: return "void";
+        case SymbolType::TYPE_ARRAY: return "array";
+        case SymbolType::TYPE_FUNCTION: return "function";
+        default: return "unknown";
+    }
+}
+
+// 变量信息结构体
+struct VarInfo {
+    SymbolType type = SymbolType::TYPE_UNKNOWN;
+    bool is_const = false;
+    std::any const_val;
+    std::vector<int> array_dims;  // 数组维度，空表示非数组
+    void* decl_ctx = nullptr;     // 关联的语法节点
+    
+    // 检查是否为数组类型
+    bool IsArray() const { return !array_dims.empty(); }
+    
+    // 获取数组元素总数
+    int GetArrayElementCount() const {
+        int count = 1;
+        for (int dim : array_dims) {
+            count *= dim;
+        }
+        return count;
+    }
+};
+
+// 函数信息结构体
+struct FuncInfo {
+    SymbolType ret_type = SymbolType::TYPE_UNKNOWN;
+    std::string name;
+    std::vector<SymbolType> param_types;  // 参数类型列表
+    void* decl_ctx = nullptr;             // 关联的语法节点
+    
+    // 检查参数匹配
+    bool CheckParams(const std::vector<SymbolType>& actual_params) const {
+        if (actual_params.size() != param_types.size()) {
+            return false;
+        }
+        
+        for (size_t i = 0; i < param_types.size(); ++i) {
+            if (param_types[i] != actual_params[i] && 
+                param_types[i] != SymbolType::TYPE_UNKNOWN && 
+                actual_params[i] != SymbolType::TYPE_UNKNOWN) {
+                return false;
+            }
+        }
+        return true;
+    }
+};
+
+// 作用域条目结构体
+struct ScopeEntry {
+    // 变量符号表：符号名 -> (符号信息, 声明节点)
+    std::unordered_map<std::string, std::pair<VarInfo, void*>> var_symbols;
+    
+    // 函数符号表：符号名 -> (函数信息, 声明节点)
+    std::unordered_map<std::string, std::pair<FuncInfo, void*>> func_symbols;
+    
+    // 清空作用域
+    void Clear() {
+        var_symbols.clear();
+        func_symbols.clear();
+    }
+};
 
+// 符号表核心类
 class SymbolTable {
- public:
+public:
-  void Add(const std::string& name, SysYParser::VarDefContext* decl);
+    // ========== 作用域管理 ==========
-  bool Contains(const std::string& name) const;
+    
-  SysYParser::VarDefContext* Lookup(const std::string& name) const;
+    // 进入新作用域
+    void EnterScope();
+    
+    // 离开当前作用域
+    void LeaveScope();
+    
+    // 获取当前作用域深度
+    size_t GetScopeDepth() const { return scopes_.size(); }
+    
+    // 检查作用域栈是否为空
+    bool IsEmpty() const { return scopes_.empty(); }
+    
+    // ========== 变量符号管理 ==========
+    
+    // 检查当前作用域是否包含指定变量
+    bool CurrentScopeHasVar(const std::string& name) const;
+    
+    // 绑定变量到当前作用域
+    void BindVar(const std::string& name, const VarInfo& info, void* decl_ctx);
+    
+    // 查找变量（从当前作用域向上遍历）
+    bool LookupVar(const std::string& name, VarInfo& out_info, void*& out_decl_ctx) const;
+    
+    // 快速查找变量（不获取详细信息）
+    bool HasVar(const std::string& name) const {
+        VarInfo info;
+        void* ctx;
+        return LookupVar(name, info, ctx);
+    }
+    
+    // ========== 函数符号管理 ==========
+    
+    // 检查当前作用域是否包含指定函数
+    bool CurrentScopeHasFunc(const std::string& name) const;
+    
+    // 绑定函数到当前作用域
+    void BindFunc(const std::string& name, const FuncInfo& info, void* decl_ctx);
+    
+    // 查找函数（从当前作用域向上遍历）
+    bool LookupFunc(const std::string& name, FuncInfo& out_info, void*& out_decl_ctx) const;
+    
+    // 快速查找函数（不获取详细信息）
+    bool HasFunc(const std::string& name) const {
+        FuncInfo info;
+        void* ctx;
+        return LookupFunc(name, info, ctx);
+    }
+    
+    // ========== 循环状态管理 ==========
+    
+    // 进入循环
+    void EnterLoop();
+    
+    // 离开循环
+    void ExitLoop();
+    
+    // 检查是否在循环内
+    bool InLoop() const;
+    
+    // 获取循环嵌套深度
+    int GetLoopDepth() const { return loop_depth_; }
+    
+    // ========== 辅助功能 ==========
+    
+    // 清空所有作用域和状态
+    void Clear();
+    
+    // 获取当前作用域中所有变量名
+    std::vector<std::string> GetCurrentScopeVarNames() const;
+    
+    // 获取当前作用域中所有函数名
+    std::vector<std::string> GetCurrentScopeFuncNames() const;
+    
+    // 调试：打印符号表内容
+    void Dump() const;
 
- private:
+private:
-  std::unordered_map<std::string, SysYParser::VarDefContext*> table_;
+    // 作用域栈
+    std::stack<ScopeEntry> scopes_;
+    
+    // 循环嵌套深度
+    int loop_depth_ = 0;
 };
+
+// 类型兼容性检查函数
+inline bool IsTypeCompatible(SymbolType expected, SymbolType actual) {
+    if (expected == SymbolType::TYPE_UNKNOWN || actual == SymbolType::TYPE_UNKNOWN) {
+        return true;  // 未知类型视为兼容
+    }
+    
+    // 基本类型兼容规则
+    if (expected == actual) {
+        return true;
+    }
+    
+    // int 可以隐式转换为 float
+    if (expected == SymbolType::TYPE_FLOAT && actual == SymbolType::TYPE_INT) {
+        return true;
+    }
+    
+    return false;
+}
+
+#endif // SYMBOL_TABLE_H

node_modules/.package-lock.json

@@ -0,0 +1,6 @@
+{
+  "name": "nudt-compiler-cpp",
+  "lockfileVersion": 2,
+  "requires": true,
+  "packages": {}
+}

node_modules/@anthropic-ai/claude-code/vendor/ripgrep/COPYING

@@ -0,0 +1,3 @@
+This project is dual-licensed under the Unlicense and MIT licenses.
+
+You may use this code under the terms of either license.

node_modules/@img/sharp-libvips-linux-x64/README.md

@@ -0,0 +1,46 @@
+# `@img/sharp-libvips-linux-x64`
+
+Prebuilt libvips and dependencies for use with sharp on Linux (glibc) x64.
+
+## Licensing
+
+This software contains third-party libraries
+used under the terms of the following licences:
+
+| Library       | Used under the terms of                                                                                   |
+|---------------|-----------------------------------------------------------------------------------------------------------|
+| aom           | BSD 2-Clause + [Alliance for Open Media Patent License 1.0](https://aomedia.org/license/patent-license/)  |
+| cairo         | Mozilla Public License 2.0                                                                                |
+| cgif          | MIT Licence                                                                                               |
+| expat         | MIT Licence                                                                                               |
+| fontconfig    | [fontconfig Licence](https://gitlab.freedesktop.org/fontconfig/fontconfig/blob/main/COPYING) (BSD-like)   |
+| freetype      | [freetype Licence](https://git.savannah.gnu.org/cgit/freetype/freetype2.git/tree/docs/FTL.TXT) (BSD-like) |
+| fribidi       | LGPLv3                                                                                                    |
+| glib          | LGPLv3                                                                                                    |
+| harfbuzz      | MIT Licence                                                                                               |
+| highway       | Apache-2.0 License, BSD 3-Clause                                                                          |
+| lcms          | MIT Licence                                                                                               |
+| libarchive    | BSD 2-Clause                                                                                              |
+| libexif       | LGPLv3                                                                                                    |
+| libffi        | MIT Licence                                                                                               |
+| libheif       | LGPLv3                                                                                                    |
+| libimagequant | [BSD 2-Clause](https://github.com/lovell/libimagequant/blob/main/COPYRIGHT)                               |
+| libnsgif      | MIT Licence                                                                                               |
+| libpng        | [libpng License](https://github.com/pnggroup/libpng/blob/master/LICENSE)                                  |
+| librsvg       | LGPLv3                                                                                                    |
+| libspng       | [BSD 2-Clause, libpng License](https://github.com/randy408/libspng/blob/master/LICENSE)                   |
+| libtiff       | [libtiff License](https://gitlab.com/libtiff/libtiff/blob/master/LICENSE.md) (BSD-like)                   |
+| libvips       | LGPLv3                                                                                                    |
+| libwebp       | New BSD License                                                                                           |
+| libxml2       | MIT Licence                                                                                               |
+| mozjpeg       | [zlib License, IJG License, BSD-3-Clause](https://github.com/mozilla/mozjpeg/blob/master/LICENSE.md)      |
+| pango         | LGPLv3                                                                                                    |
+| pixman        | MIT Licence                                                                                               |
+| proxy-libintl | LGPLv3                                                                                                    |
+| zlib-ng       | [zlib Licence](https://github.com/zlib-ng/zlib-ng/blob/develop/LICENSE.md)                                |
+
+Use of libraries under the terms of the LGPLv3 is via the
+"any later version" clause of the LGPLv2 or LGPLv2.1.
+
+Please report any errors or omissions via
+https://github.com/lovell/sharp-libvips/issues/new

node_modules/@img/sharp-libvips-linux-x64/lib/glib-2.0/include/glibconfig.h

@@ -0,0 +1,221 @@
+/* glibconfig.h
+ *
+ * This is a generated file.  Please modify 'glibconfig.h.in'
+ */
+
+#ifndef __GLIBCONFIG_H__
+#define __GLIBCONFIG_H__
+
+#include <glib/gmacros.h>
+
+#include <limits.h>
+#include <float.h>
+#define GLIB_HAVE_ALLOCA_H
+
+#define GLIB_STATIC_COMPILATION 1
+#define GOBJECT_STATIC_COMPILATION 1
+#define GIO_STATIC_COMPILATION 1
+#define GMODULE_STATIC_COMPILATION 1
+#define GI_STATIC_COMPILATION 1
+#define G_INTL_STATIC_COMPILATION 1
+#define FFI_STATIC_BUILD 1
+
+/* Specifies that GLib's g_print*() functions wrap the
+ * system printf functions.  This is useful to know, for example,
+ * when using glibc's register_printf_function().
+ */
+#define GLIB_USING_SYSTEM_PRINTF
+
+G_BEGIN_DECLS
+
+#define G_MINFLOAT	FLT_MIN
+#define G_MAXFLOAT	FLT_MAX
+#define G_MINDOUBLE	DBL_MIN
+#define G_MAXDOUBLE	DBL_MAX
+#define G_MINSHORT	SHRT_MIN
+#define G_MAXSHORT	SHRT_MAX
+#define G_MAXUSHORT	USHRT_MAX
+#define G_MININT	INT_MIN
+#define G_MAXINT	INT_MAX
+#define G_MAXUINT	UINT_MAX
+#define G_MINLONG	LONG_MIN
+#define G_MAXLONG	LONG_MAX
+#define G_MAXULONG	ULONG_MAX
+
+typedef signed char gint8;
+typedef unsigned char guint8;
+
+typedef signed short gint16;
+typedef unsigned short guint16;
+
+#define G_GINT16_MODIFIER "h"
+#define G_GINT16_FORMAT "hi"
+#define G_GUINT16_FORMAT "hu"
+
+
+typedef signed int gint32;
+typedef unsigned int guint32;
+
+#define G_GINT32_MODIFIER ""
+#define G_GINT32_FORMAT "i"
+#define G_GUINT32_FORMAT "u"
+
+
+#define G_HAVE_GINT64 1          /* deprecated, always true */
+
+typedef signed long gint64;
+typedef unsigned long guint64;
+
+#define G_GINT64_CONSTANT(val)	(val##L)
+#define G_GUINT64_CONSTANT(val)	(val##UL)
+
+#define G_GINT64_MODIFIER "l"
+#define G_GINT64_FORMAT "li"
+#define G_GUINT64_FORMAT "lu"
+
+
+#define GLIB_SIZEOF_VOID_P 8
+#define GLIB_SIZEOF_LONG   8
+#define GLIB_SIZEOF_SIZE_T 8
+#define GLIB_SIZEOF_SSIZE_T 8
+
+typedef signed long gssize;
+typedef unsigned long gsize;
+#define G_GSIZE_MODIFIER "l"
+#define G_GSSIZE_MODIFIER "l"
+#define G_GSIZE_FORMAT "lu"
+#define G_GSSIZE_FORMAT "li"
+
+#define G_MAXSIZE	G_MAXULONG
+#define G_MINSSIZE	G_MINLONG
+#define G_MAXSSIZE	G_MAXLONG
+
+typedef gint64 goffset;
+#define G_MINOFFSET	G_MININT64
+#define G_MAXOFFSET	G_MAXINT64
+
+#define G_GOFFSET_MODIFIER      G_GINT64_MODIFIER
+#define G_GOFFSET_FORMAT        G_GINT64_FORMAT
+#define G_GOFFSET_CONSTANT(val) G_GINT64_CONSTANT(val)
+
+#define G_POLLFD_FORMAT "%d"
+
+#define GPOINTER_TO_INT(p)	((gint)  (glong) (p))
+#define GPOINTER_TO_UINT(p)	((guint) (gulong) (p))
+
+#define GINT_TO_POINTER(i)	((gpointer) (glong) (i))
+#define GUINT_TO_POINTER(u)	((gpointer) (gulong) (u))
+
+typedef signed long gintptr;
+typedef unsigned long guintptr;
+
+#define G_GINTPTR_MODIFIER      "l"
+#define G_GINTPTR_FORMAT        "li"
+#define G_GUINTPTR_FORMAT       "lu"
+
+#define GLIB_MAJOR_VERSION 2
+#define GLIB_MINOR_VERSION 86
+#define GLIB_MICRO_VERSION 1
+
+#define G_OS_UNIX
+
+#define G_VA_COPY va_copy
+
+#define G_VA_COPY_AS_ARRAY 1
+
+#define G_HAVE_ISO_VARARGS 1
+
+/* gcc-2.95.x supports both gnu style and ISO varargs, but if -ansi
+ * is passed ISO vararg support is turned off, and there is no work
+ * around to turn it on, so we unconditionally turn it off.
+ */
+#if __GNUC__ == 2 && __GNUC_MINOR__ == 95
+#  undef G_HAVE_ISO_VARARGS
+#endif
+
+#define G_HAVE_GROWING_STACK 0
+
+#ifndef _MSC_VER
+# define G_HAVE_GNUC_VARARGS 1
+#endif
+
+#if defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590)
+#define G_GNUC_INTERNAL __attribute__((visibility("hidden")))
+#elif defined(__SUNPRO_C) && (__SUNPRO_C >= 0x550)
+#define G_GNUC_INTERNAL __hidden
+#elif defined (__GNUC__) && defined (G_HAVE_GNUC_VISIBILITY)
+#define G_GNUC_INTERNAL __attribute__((visibility("hidden")))
+#else
+#define G_GNUC_INTERNAL
+#endif
+
+#define G_THREADS_ENABLED
+#define G_THREADS_IMPL_POSIX
+
+#define G_ATOMIC_LOCK_FREE
+
+#define GINT16_TO_LE(val)	((gint16) (val))
+#define GUINT16_TO_LE(val)	((guint16) (val))
+#define GINT16_TO_BE(val)	((gint16) GUINT16_SWAP_LE_BE (val))
+#define GUINT16_TO_BE(val)	(GUINT16_SWAP_LE_BE (val))
+
+#define GINT32_TO_LE(val)	((gint32) (val))
+#define GUINT32_TO_LE(val)	((guint32) (val))
+#define GINT32_TO_BE(val)	((gint32) GUINT32_SWAP_LE_BE (val))
+#define GUINT32_TO_BE(val)	(GUINT32_SWAP_LE_BE (val))
+
+#define GINT64_TO_LE(val)	((gint64) (val))
+#define GUINT64_TO_LE(val)	((guint64) (val))
+#define GINT64_TO_BE(val)	((gint64) GUINT64_SWAP_LE_BE (val))
+#define GUINT64_TO_BE(val)	(GUINT64_SWAP_LE_BE (val))
+
+#define GLONG_TO_LE(val)	((glong) GINT64_TO_LE (val))
+#define GULONG_TO_LE(val)	((gulong) GUINT64_TO_LE (val))
+#define GLONG_TO_BE(val)	((glong) GINT64_TO_BE (val))
+#define GULONG_TO_BE(val)	((gulong) GUINT64_TO_BE (val))
+#define GINT_TO_LE(val)		((gint) GINT32_TO_LE (val))
+#define GUINT_TO_LE(val)	((guint) GUINT32_TO_LE (val))
+#define GINT_TO_BE(val)		((gint) GINT32_TO_BE (val))
+#define GUINT_TO_BE(val)	((guint) GUINT32_TO_BE (val))
+#define GSIZE_TO_LE(val)	((gsize) GUINT64_TO_LE (val))
+#define GSSIZE_TO_LE(val)	((gssize) GINT64_TO_LE (val))
+#define GSIZE_TO_BE(val)	((gsize) GUINT64_TO_BE (val))
+#define GSSIZE_TO_BE(val)	((gssize) GINT64_TO_BE (val))
+#define G_BYTE_ORDER G_LITTLE_ENDIAN
+
+#define GLIB_SYSDEF_POLLIN =1
+#define GLIB_SYSDEF_POLLOUT =4
+#define GLIB_SYSDEF_POLLPRI =2
+#define GLIB_SYSDEF_POLLHUP =16
+#define GLIB_SYSDEF_POLLERR =8
+#define GLIB_SYSDEF_POLLNVAL =32
+
+/* No way to disable deprecation warnings for macros, so only emit deprecation
+ * warnings on platforms where usage of this macro is broken */
+#if defined(__APPLE__) || defined(_MSC_VER) || defined(__CYGWIN__)
+#define G_MODULE_SUFFIX "so" GLIB_DEPRECATED_MACRO_IN_2_76
+#else
+#define G_MODULE_SUFFIX "so"
+#endif
+
+typedef int GPid;
+#define G_PID_FORMAT "i"
+
+#define GLIB_SYSDEF_AF_UNIX 1
+#define GLIB_SYSDEF_AF_INET 2
+#define GLIB_SYSDEF_AF_INET6 10
+
+#define GLIB_SYSDEF_MSG_OOB 1
+#define GLIB_SYSDEF_MSG_PEEK 2
+#define GLIB_SYSDEF_MSG_DONTROUTE 4
+
+#define G_DIR_SEPARATOR '/'
+#define G_DIR_SEPARATOR_S "/"
+#define G_SEARCHPATH_SEPARATOR ':'
+#define G_SEARCHPATH_SEPARATOR_S ":"
+
+#undef G_HAVE_FREE_SIZED
+
+G_END_DECLS
+
+#endif /* __GLIBCONFIG_H__ */

node_modules/@img/sharp-libvips-linux-x64/lib/index.js

@@ -0,0 +1 @@
+module.exports = __dirname;

node_modules/@img/sharp-libvips-linux-x64/package.json

@@ -0,0 +1,42 @@
+{
+  "name": "@img/sharp-libvips-linux-x64",
+  "version": "1.2.4",
+  "description": "Prebuilt libvips and dependencies for use with sharp on Linux (glibc) x64",
+  "author": "Lovell Fuller <npm@lovell.info>",
+  "homepage": "https://sharp.pixelplumbing.com",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/lovell/sharp-libvips.git",
+    "directory": "npm/linux-x64"
+  },
+  "license": "LGPL-3.0-or-later",
+  "funding": {
+    "url": "https://opencollective.com/libvips"
+  },
+  "preferUnplugged": true,
+  "publishConfig": {
+    "access": "public"
+  },
+  "files": [
+    "lib",
+    "versions.json"
+  ],
+  "type": "commonjs",
+  "exports": {
+    "./lib": "./lib/index.js",
+    "./package": "./package.json",
+    "./versions": "./versions.json"
+  },
+  "config": {
+    "glibc": ">=2.26"
+  },
+  "os": [
+    "linux"
+  ],
+  "libc": [
+    "glibc"
+  ],
+  "cpu": [
+    "x64"
+  ]
+}

node_modules/@img/sharp-libvips-linux-x64/versions.json

@@ -0,0 +1,30 @@
+{
+  "aom": "3.13.1",
+  "archive": "3.8.2",
+  "cairo": "1.18.4",
+  "cgif": "0.5.0",
+  "exif": "0.6.25",
+  "expat": "2.7.3",
+  "ffi": "3.5.2",
+  "fontconfig": "2.17.1",
+  "freetype": "2.14.1",
+  "fribidi": "1.0.16",
+  "glib": "2.86.1",
+  "harfbuzz": "12.1.0",
+  "heif": "1.20.2",
+  "highway": "1.3.0",
+  "imagequant": "2.4.1",
+  "lcms": "2.17",
+  "mozjpeg": "0826579",
+  "pango": "1.57.0",
+  "pixman": "0.46.4",
+  "png": "1.6.50",
+  "proxy-libintl": "0.5",
+  "rsvg": "2.61.2",
+  "spng": "0.7.4",
+  "tiff": "4.7.1",
+  "vips": "8.17.3",
+  "webp": "1.6.0",
+  "xml2": "2.15.1",
+  "zlib-ng": "2.2.5"
+}

node_modules/@img/sharp-libvips-linuxmusl-x64/README.md

@@ -0,0 +1,46 @@
+# `@img/sharp-libvips-linuxmusl-x64`
+
+Prebuilt libvips and dependencies for use with sharp on Linux (musl) x64.
+
+## Licensing
+
+This software contains third-party libraries
+used under the terms of the following licences:
+
+| Library       | Used under the terms of                                                                                   |
+|---------------|-----------------------------------------------------------------------------------------------------------|
+| aom           | BSD 2-Clause + [Alliance for Open Media Patent License 1.0](https://aomedia.org/license/patent-license/)  |
+| cairo         | Mozilla Public License 2.0                                                                                |
+| cgif          | MIT Licence                                                                                               |
+| expat         | MIT Licence                                                                                               |
+| fontconfig    | [fontconfig Licence](https://gitlab.freedesktop.org/fontconfig/fontconfig/blob/main/COPYING) (BSD-like)   |
+| freetype      | [freetype Licence](https://git.savannah.gnu.org/cgit/freetype/freetype2.git/tree/docs/FTL.TXT) (BSD-like) |
+| fribidi       | LGPLv3                                                                                                    |
+| glib          | LGPLv3                                                                                                    |
+| harfbuzz      | MIT Licence                                                                                               |
+| highway       | Apache-2.0 License, BSD 3-Clause                                                                          |
+| lcms          | MIT Licence                                                                                               |
+| libarchive    | BSD 2-Clause                                                                                              |
+| libexif       | LGPLv3                                                                                                    |
+| libffi        | MIT Licence                                                                                               |
+| libheif       | LGPLv3                                                                                                    |
+| libimagequant | [BSD 2-Clause](https://github.com/lovell/libimagequant/blob/main/COPYRIGHT)                               |
+| libnsgif      | MIT Licence                                                                                               |
+| libpng        | [libpng License](https://github.com/pnggroup/libpng/blob/master/LICENSE)                                  |
+| librsvg       | LGPLv3                                                                                                    |
+| libspng       | [BSD 2-Clause, libpng License](https://github.com/randy408/libspng/blob/master/LICENSE)                   |
+| libtiff       | [libtiff License](https://gitlab.com/libtiff/libtiff/blob/master/LICENSE.md) (BSD-like)                   |
+| libvips       | LGPLv3                                                                                                    |
+| libwebp       | New BSD License                                                                                           |
+| libxml2       | MIT Licence                                                                                               |
+| mozjpeg       | [zlib License, IJG License, BSD-3-Clause](https://github.com/mozilla/mozjpeg/blob/master/LICENSE.md)      |
+| pango         | LGPLv3                                                                                                    |
+| pixman        | MIT Licence                                                                                               |
+| proxy-libintl | LGPLv3                                                                                                    |
+| zlib-ng       | [zlib Licence](https://github.com/zlib-ng/zlib-ng/blob/develop/LICENSE.md)                                |
+
+Use of libraries under the terms of the LGPLv3 is via the
+"any later version" clause of the LGPLv2 or LGPLv2.1.
+
+Please report any errors or omissions via
+https://github.com/lovell/sharp-libvips/issues/new

node_modules/@img/sharp-libvips-linuxmusl-x64/lib/glib-2.0/include/glibconfig.h

@@ -0,0 +1,221 @@
+/* glibconfig.h
+ *
+ * This is a generated file.  Please modify 'glibconfig.h.in'
+ */
+
+#ifndef __GLIBCONFIG_H__
+#define __GLIBCONFIG_H__
+
+#include <glib/gmacros.h>
+
+#include <limits.h>
+#include <float.h>
+#define GLIB_HAVE_ALLOCA_H
+
+#define GLIB_STATIC_COMPILATION 1
+#define GOBJECT_STATIC_COMPILATION 1
+#define GIO_STATIC_COMPILATION 1
+#define GMODULE_STATIC_COMPILATION 1
+#define GI_STATIC_COMPILATION 1
+#define G_INTL_STATIC_COMPILATION 1
+#define FFI_STATIC_BUILD 1
+
+/* Specifies that GLib's g_print*() functions wrap the
+ * system printf functions.  This is useful to know, for example,
+ * when using glibc's register_printf_function().
+ */
+#define GLIB_USING_SYSTEM_PRINTF
+
+G_BEGIN_DECLS
+
+#define G_MINFLOAT	FLT_MIN
+#define G_MAXFLOAT	FLT_MAX
+#define G_MINDOUBLE	DBL_MIN
+#define G_MAXDOUBLE	DBL_MAX
+#define G_MINSHORT	SHRT_MIN
+#define G_MAXSHORT	SHRT_MAX
+#define G_MAXUSHORT	USHRT_MAX
+#define G_MININT	INT_MIN
+#define G_MAXINT	INT_MAX
+#define G_MAXUINT	UINT_MAX
+#define G_MINLONG	LONG_MIN
+#define G_MAXLONG	LONG_MAX
+#define G_MAXULONG	ULONG_MAX
+
+typedef signed char gint8;
+typedef unsigned char guint8;
+
+typedef signed short gint16;
+typedef unsigned short guint16;
+
+#define G_GINT16_MODIFIER "h"
+#define G_GINT16_FORMAT "hi"
+#define G_GUINT16_FORMAT "hu"
+
+
+typedef signed int gint32;
+typedef unsigned int guint32;
+
+#define G_GINT32_MODIFIER ""
+#define G_GINT32_FORMAT "i"
+#define G_GUINT32_FORMAT "u"
+
+
+#define G_HAVE_GINT64 1          /* deprecated, always true */
+
+typedef signed long gint64;
+typedef unsigned long guint64;
+
+#define G_GINT64_CONSTANT(val)	(val##L)
+#define G_GUINT64_CONSTANT(val)	(val##UL)
+
+#define G_GINT64_MODIFIER "l"
+#define G_GINT64_FORMAT "li"
+#define G_GUINT64_FORMAT "lu"
+
+
+#define GLIB_SIZEOF_VOID_P 8
+#define GLIB_SIZEOF_LONG   8
+#define GLIB_SIZEOF_SIZE_T 8
+#define GLIB_SIZEOF_SSIZE_T 8
+
+typedef signed long gssize;
+typedef unsigned long gsize;
+#define G_GSIZE_MODIFIER "l"
+#define G_GSSIZE_MODIFIER "l"
+#define G_GSIZE_FORMAT "lu"
+#define G_GSSIZE_FORMAT "li"
+
+#define G_MAXSIZE	G_MAXULONG
+#define G_MINSSIZE	G_MINLONG
+#define G_MAXSSIZE	G_MAXLONG
+
+typedef gint64 goffset;
+#define G_MINOFFSET	G_MININT64
+#define G_MAXOFFSET	G_MAXINT64
+
+#define G_GOFFSET_MODIFIER      G_GINT64_MODIFIER
+#define G_GOFFSET_FORMAT        G_GINT64_FORMAT
+#define G_GOFFSET_CONSTANT(val) G_GINT64_CONSTANT(val)
+
+#define G_POLLFD_FORMAT "%d"
+
+#define GPOINTER_TO_INT(p)	((gint)  (glong) (p))
+#define GPOINTER_TO_UINT(p)	((guint) (gulong) (p))
+
+#define GINT_TO_POINTER(i)	((gpointer) (glong) (i))
+#define GUINT_TO_POINTER(u)	((gpointer) (gulong) (u))
+
+typedef signed long gintptr;
+typedef unsigned long guintptr;
+
+#define G_GINTPTR_MODIFIER      "l"
+#define G_GINTPTR_FORMAT        "li"
+#define G_GUINTPTR_FORMAT       "lu"
+
+#define GLIB_MAJOR_VERSION 2
+#define GLIB_MINOR_VERSION 86
+#define GLIB_MICRO_VERSION 1
+
+#define G_OS_UNIX
+
+#define G_VA_COPY va_copy
+
+#define G_VA_COPY_AS_ARRAY 1
+
+#define G_HAVE_ISO_VARARGS 1
+
+/* gcc-2.95.x supports both gnu style and ISO varargs, but if -ansi
+ * is passed ISO vararg support is turned off, and there is no work
+ * around to turn it on, so we unconditionally turn it off.
+ */
+#if __GNUC__ == 2 && __GNUC_MINOR__ == 95
+#  undef G_HAVE_ISO_VARARGS
+#endif
+
+#define G_HAVE_GROWING_STACK 0
+
+#ifndef _MSC_VER
+# define G_HAVE_GNUC_VARARGS 1
+#endif
+
+#if defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590)
+#define G_GNUC_INTERNAL __attribute__((visibility("hidden")))
+#elif defined(__SUNPRO_C) && (__SUNPRO_C >= 0x550)
+#define G_GNUC_INTERNAL __hidden
+#elif defined (__GNUC__) && defined (G_HAVE_GNUC_VISIBILITY)
+#define G_GNUC_INTERNAL __attribute__((visibility("hidden")))
+#else
+#define G_GNUC_INTERNAL
+#endif
+
+#define G_THREADS_ENABLED
+#define G_THREADS_IMPL_POSIX
+
+#define G_ATOMIC_LOCK_FREE
+
+#define GINT16_TO_LE(val)	((gint16) (val))
+#define GUINT16_TO_LE(val)	((guint16) (val))
+#define GINT16_TO_BE(val)	((gint16) GUINT16_SWAP_LE_BE (val))
+#define GUINT16_TO_BE(val)	(GUINT16_SWAP_LE_BE (val))
+
+#define GINT32_TO_LE(val)	((gint32) (val))
+#define GUINT32_TO_LE(val)	((guint32) (val))
+#define GINT32_TO_BE(val)	((gint32) GUINT32_SWAP_LE_BE (val))
+#define GUINT32_TO_BE(val)	(GUINT32_SWAP_LE_BE (val))
+
+#define GINT64_TO_LE(val)	((gint64) (val))
+#define GUINT64_TO_LE(val)	((guint64) (val))
+#define GINT64_TO_BE(val)	((gint64) GUINT64_SWAP_LE_BE (val))
+#define GUINT64_TO_BE(val)	(GUINT64_SWAP_LE_BE (val))
+
+#define GLONG_TO_LE(val)	((glong) GINT64_TO_LE (val))
+#define GULONG_TO_LE(val)	((gulong) GUINT64_TO_LE (val))
+#define GLONG_TO_BE(val)	((glong) GINT64_TO_BE (val))
+#define GULONG_TO_BE(val)	((gulong) GUINT64_TO_BE (val))
+#define GINT_TO_LE(val)		((gint) GINT32_TO_LE (val))
+#define GUINT_TO_LE(val)	((guint) GUINT32_TO_LE (val))
+#define GINT_TO_BE(val)		((gint) GINT32_TO_BE (val))
+#define GUINT_TO_BE(val)	((guint) GUINT32_TO_BE (val))
+#define GSIZE_TO_LE(val)	((gsize) GUINT64_TO_LE (val))
+#define GSSIZE_TO_LE(val)	((gssize) GINT64_TO_LE (val))
+#define GSIZE_TO_BE(val)	((gsize) GUINT64_TO_BE (val))
+#define GSSIZE_TO_BE(val)	((gssize) GINT64_TO_BE (val))
+#define G_BYTE_ORDER G_LITTLE_ENDIAN
+
+#define GLIB_SYSDEF_POLLIN =1
+#define GLIB_SYSDEF_POLLOUT =4
+#define GLIB_SYSDEF_POLLPRI =2
+#define GLIB_SYSDEF_POLLHUP =16
+#define GLIB_SYSDEF_POLLERR =8
+#define GLIB_SYSDEF_POLLNVAL =32
+
+/* No way to disable deprecation warnings for macros, so only emit deprecation
+ * warnings on platforms where usage of this macro is broken */
+#if defined(__APPLE__) || defined(_MSC_VER) || defined(__CYGWIN__)
+#define G_MODULE_SUFFIX "so" GLIB_DEPRECATED_MACRO_IN_2_76
+#else
+#define G_MODULE_SUFFIX "so"
+#endif
+
+typedef int GPid;
+#define G_PID_FORMAT "i"
+
+#define GLIB_SYSDEF_AF_UNIX 1
+#define GLIB_SYSDEF_AF_INET 2
+#define GLIB_SYSDEF_AF_INET6 10
+
+#define GLIB_SYSDEF_MSG_OOB 1
+#define GLIB_SYSDEF_MSG_PEEK 2
+#define GLIB_SYSDEF_MSG_DONTROUTE 4
+
+#define G_DIR_SEPARATOR '/'
+#define G_DIR_SEPARATOR_S "/"
+#define G_SEARCHPATH_SEPARATOR ':'
+#define G_SEARCHPATH_SEPARATOR_S ":"
+
+#undef G_HAVE_FREE_SIZED
+
+G_END_DECLS
+
+#endif /* __GLIBCONFIG_H__ */

node_modules/@img/sharp-libvips-linuxmusl-x64/lib/index.js

@@ -0,0 +1 @@
+module.exports = __dirname;

node_modules/@img/sharp-libvips-linuxmusl-x64/package.json

@@ -0,0 +1,42 @@
+{
+  "name": "@img/sharp-libvips-linuxmusl-x64",
+  "version": "1.2.4",
+  "description": "Prebuilt libvips and dependencies for use with sharp on Linux (musl) x64",
+  "author": "Lovell Fuller <npm@lovell.info>",
+  "homepage": "https://sharp.pixelplumbing.com",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/lovell/sharp-libvips.git",
+    "directory": "npm/linuxmusl-x64"
+  },
+  "license": "LGPL-3.0-or-later",
+  "funding": {
+    "url": "https://opencollective.com/libvips"
+  },
+  "preferUnplugged": true,
+  "publishConfig": {
+    "access": "public"
+  },
+  "files": [
+    "lib",
+    "versions.json"
+  ],
+  "type": "commonjs",
+  "exports": {
+    "./lib": "./lib/index.js",
+    "./package": "./package.json",
+    "./versions": "./versions.json"
+  },
+  "config": {
+    "musl": ">=1.2.2"
+  },
+  "os": [
+    "linux"
+  ],
+  "libc": [
+    "musl"
+  ],
+  "cpu": [
+    "x64"
+  ]
+}

node_modules/@img/sharp-libvips-linuxmusl-x64/versions.json

@@ -0,0 +1,30 @@
+{
+  "aom": "3.13.1",
+  "archive": "3.8.2",
+  "cairo": "1.18.4",
+  "cgif": "0.5.0",
+  "exif": "0.6.25",
+  "expat": "2.7.3",
+  "ffi": "3.5.2",
+  "fontconfig": "2.17.1",
+  "freetype": "2.14.1",
+  "fribidi": "1.0.16",
+  "glib": "2.86.1",
+  "harfbuzz": "12.1.0",
+  "heif": "1.20.2",
+  "highway": "1.3.0",
+  "imagequant": "2.4.1",
+  "lcms": "2.17",
+  "mozjpeg": "0826579",
+  "pango": "1.57.0",
+  "pixman": "0.46.4",
+  "png": "1.6.50",
+  "proxy-libintl": "0.5",
+  "rsvg": "2.61.2",
+  "spng": "0.7.4",
+  "tiff": "4.7.1",
+  "vips": "8.17.3",
+  "webp": "1.6.0",
+  "xml2": "2.15.1",
+  "zlib-ng": "2.2.5"
+}

package-lock.json

@@ -0,0 +1,6 @@
+{
+  "name": "nudt-compiler-cpp",
+  "lockfileVersion": 2,
+  "requires": true,
+  "packages": {}
+}

package.json

@@ -0,0 +1 @@
+{}

report.md

@@ -0,0 +1,97 @@
+Lab1 语法树构建
+
+要做什么：补全 SysY 文法，保证更多合法程序可被解析并打印语法树。
+主要改哪些文件：
+Lab1-语法树构建.md
+SysY.g4
+AntlrDriver.cpp
+SyntaxTreePrinter.cpp
+修改方式：
+扩展 grammar 规则和 token；保持解析入口稳定；错误信息要可定位到行列；语法树打印结构清晰。
+验收：parse-tree 模式批量通过测试集。
+Lab2 中间表示生成
+
+要做什么：把语义检查和 IR 生成从最小子集扩展到课程要求语法。
+主要改哪些文件：
+Lab2-中间表示生成.md
+Sema.h
+SymbolTable.h
+Sema.cpp
+SymbolTable.cpp
+IR.h
+IRBuilder.cpp
+Instruction.cpp
+IRPrinter.cpp
+IRGen.h
+IRGenDecl.cpp
+IRGenStmt.cpp
+IRGenExp.cpp
+IRGenFunc.cpp
+IRGenDriver.cpp
+修改方式：
+先补语义绑定和错误检查，再补 IR 指令与类型，最后在 Visitor 里把各类语句表达式翻译到 IR。
+验收：IR 能生成，并且 verify_ir 脚本 run 模式和输出比对通过。
+Lab3 指令选择与汇编生成
+
+要做什么：把 IR 正确 lower 到 AArch64 汇编，覆盖更多语义。
+主要改哪些文件：
+Lab3-指令选择与汇编生成.md
+MIR.h
+Lowering.cpp
+RegAlloc.cpp
+FrameLowering.cpp
+AsmPrinter.cpp
+修改方式：
+扩充 MIR 指令和操作数表示；完善 lowering 映射；保证栈帧和函数序言尾声正确；输出可汇编可运行的 asm。
+验收：verify_asm 脚本 run 模式通过。
+Lab4 基本标量优化
+
+要做什么：先做 mem2reg，再做常量相关优化、DCE、CFG 简化、CSE 等。
+主要改哪些文件：
+Lab4-基本标量优化.md
+Mem2Reg.cpp
+ConstFold.cpp
+ConstProp.cpp
+DCE.cpp
+CSE.cpp
+CFGSimplify.cpp
+PassManager.cpp
+DominatorTree.cpp
+LoopInfo.cpp
+修改方式：
+实现每个 pass 的核心逻辑，并在 PassManager 固化顺序和迭代策略。
+验收：优化前后语义一致，IR/ASM 回归测试通过。
+Lab5 寄存器分配与后端优化
+
+要做什么：从固定寄存器模板，升级到虚拟寄存器+真实分配+spill/reload，再做后端局部优化。
+主要改哪些文件：
+Lab5-寄存器分配.md
+MIR.h
+Lowering.cpp
+RegAlloc.cpp
+FrameLowering.cpp
+AsmPrinter.cpp
+Peephole.cpp
+PassManager.cpp
+修改方式：
+Lowering 先产出 vreg；RA 选图着色或线扫；处理调用约定和栈槽；最后做 peephole 与冗余访存清理。
+验收：全测试正确，且汇编明显减少无效 move/load/store。
+Lab6 并行与循环优化
+
+要做什么：识别循环结构并做循环优化，必要时尝试并行化识别。
+主要改哪些文件：
+Lab6-并行与循环优化.md
+DominatorTree.cpp
+LoopInfo.cpp
+PassManager.cpp
+CMakeLists.txt
+修改方式：
+补稳定的循环分析，再实现 LICM、强度削弱、展开、分裂中的一部分，并接入 pass 流程。
+验收：功能回归全通过，同时在代表性用例看到性能或代码质量收益。
+你可以直接照这个顺序推进
+
+先做 Lab2，优先把语义和 IR 生成功能面补全。
+再做 Lab3，保证语义到汇编端到端正确。
+接着做 Lab4，把优化 pass 跑通。
+然后做 Lab5，完成真实寄存器分配。
+最后做 Lab6，补循环优化和并行化探索。

run_tests.py

@@ -0,0 +1,39 @@
+import os
+import subprocess
+
+COMPILER = "./build/bin/compiler"
+TEST_DIR = "./test/test_case/functional"
+
+pass_cnt = 0
+fail_cnt = 0
+
+print("===== SysY Batch Test Start =====")
+
+for file in os.listdir(TEST_DIR):
+    if not file.endswith(".sy"):
+        continue
+
+    path = os.path.join(TEST_DIR, file)
+    print(f"[TEST] {file} ... ", end="")
+
+    result = subprocess.run(
+        [COMPILER, "--emit-parse-tree", path],
+        stdout=subprocess.DEVNULL,
+        stderr=subprocess.PIPE
+    )
+
+    if result.returncode == 0:
+        print("PASS")
+        pass_cnt += 1
+    else:
+        print("FAIL")
+        fail_cnt += 1
+        print("---- Error ----")
+        print(result.stderr.decode())
+        print("---------------")
+
+print("===============================")
+print(f"Total: {pass_cnt + fail_cnt}")
+print(f"PASS : {pass_cnt}")
+print(f"FAIL : {fail_cnt}")
+print("===============================")

scripts/verify_ir.sh

@@ -60,7 +60,7 @@ if [[ "$run_exec" == true ]]; then
   stdout_file="$out_dir/$stem.stdout"
   actual_file="$out_dir/$stem.actual.out"
   llc -filetype=obj "$out_file" -o "$obj"
-  clang "$obj" -o "$exe"
+  clang -no-pie "$obj" sylib/sylib.c -o "$exe" -lm
   echo "运行 $exe ..."
   set +e
   if [[ -f "$stdin_file" ]]; then
@@ -81,7 +81,7 @@ if [[ "$run_exec" == true ]]; then
   } > "$actual_file"
 
   if [[ -f "$expected_file" ]]; then
-    if diff -u "$expected_file" "$actual_file"; then
+    if diff -u <(sed -e 's/\r$//' -e '$a\\' "$expected_file") <(sed -e 's/\r$//' -e '$a\\' "$actual_file"); then
       echo "输出匹配: $expected_file"
     else
       echo "输出不匹配: $expected_file" >&2

src/antlr4/SysY.g4

@@ -1,8 +1,4 @@
-// SysY 子集语法：支持形如
+// SysY Lab1 语法：覆盖常见声明、控制流、数组、函数与表达式优先级。
-// int main() { int a = 1; int b = 2; return a + b; }
-// 的最小返回表达式编译。
-
-// 后续需要自行添加
 
 grammar SysY;
 
@@ -10,20 +6,72 @@ grammar SysY;
 /* Lexer rules                                     */
 /*===-------------------------------------------===*/
 
+CONST: 'const';
 INT: 'int';
+FLOAT: 'float';
+VOID: 'void';
+IF: 'if';
+ELSE: 'else';
+WHILE: 'while';
+BREAK: 'break';
+CONTINUE: 'continue';
 RETURN: 'return';
 
 ASSIGN: '=';
+EQ: '==';
+NE: '!=';
+LT: '<';
+GT: '>';
+LE: '<=';
+GE: '>=';
+
 ADD: '+';
+SUB: '-';
+MUL: '*';
+DIV: '/';
+MOD: '%';
+NOT: '!';
+AND: '&&';
+OR: '||';
 
 LPAREN: '(';
 RPAREN: ')';
+LBRACK: '[';
+RBRACK: ']';
 LBRACE: '{';
 RBRACE: '}';
+COMMA: ',';
 SEMICOLON: ';';
 
 ID: [a-zA-Z_][a-zA-Z_0-9]*;
-ILITERAL: [0-9]+;
+
+FLITERAL
+    : DECIMAL_FLOAT
+    | HEX_FLOAT
+    ;
+
+ILITERAL
+    : HEX_INT
+    | OCT_INT
+    | DEC_INT
+    ;
+
+fragment DEC_INT: '0' | [1-9] [0-9]*;
+fragment OCT_INT: '0' [0-7]+;
+fragment HEX_INT: '0' [xX] [0-9a-fA-F]+;
+
+fragment DECIMAL_FLOAT
+    : [0-9]+ '.' [0-9]* EXP?
+    | '.' [0-9]+ EXP?
+    | [0-9]+ EXP
+    ;
+
+fragment HEX_FLOAT
+    : '0' [xX] [0-9a-fA-F]+ ('.' [0-9a-fA-F]*)? [pP] [+-]? [0-9]+
+    | '0' [xX] '.' [0-9a-fA-F]+ [pP] [+-]? [0-9]+
+    ;
+
+fragment EXP: [eE] [+-]? [0-9]+;
 
 WS: [ \t\r\n] -> skip;
 LINECOMMENT: '//' ~[\r\n]* -> skip;
@@ -34,31 +82,61 @@ BLOCKCOMMENT: '/*' .*? '*/' -> skip;
 /*===-------------------------------------------===*/
 
 compUnit
-    : funcDef EOF
+    : (decl | funcDef)+ EOF
     ;
 
 decl
-    : btype varDef SEMICOLON
+    : constDecl
+    | varDecl
+    ;
+
+constDecl
+    : CONST btype constDef (COMMA constDef)* SEMICOLON
+    ;
+
+constDef
+    : ID (LBRACK constExp RBRACK)* ASSIGN constInitValue
+    ;
+
+constInitValue
+    : constExp
+    | LBRACE (constInitValue (COMMA constInitValue)*)? RBRACE
+    ;
+
+varDecl
+    : btype varDef (COMMA varDef)* SEMICOLON
     ;
 
 btype
     : INT
+    | FLOAT
     ;
 
 varDef
-    : lValue (ASSIGN initValue)?
+    : ID (LBRACK constExp RBRACK)* (ASSIGN initValue)?
     ;
 
 initValue
     : exp
+    | LBRACE (initValue (COMMA initValue)*)? RBRACE
     ;
 
 funcDef
-    : funcType ID LPAREN RPAREN blockStmt
+    : funcType ID LPAREN (funcFParams)? RPAREN blockStmt
     ;
 
 funcType
     : INT
+    | FLOAT
+    | VOID
+    ;
+
+funcFParams
+    : funcFParam (COMMA funcFParam)*
+    ;
+
+funcFParam
+    : btype ID (LBRACK RBRACK (LBRACK exp RBRACK)*)?
     ;
 
 blockStmt
@@ -71,28 +149,89 @@ blockItem
     ;
 
 stmt
-    : returnStmt
+    : lValue ASSIGN exp SEMICOLON
+    | (exp)? SEMICOLON
+    | blockStmt
+    | IF LPAREN cond RPAREN stmt (ELSE stmt)?
+    | WHILE LPAREN cond RPAREN stmt
+    | BREAK SEMICOLON
+    | CONTINUE SEMICOLON
+    | returnStmt
     ;
 
 returnStmt
-    : RETURN exp SEMICOLON
+    : RETURN (exp)? SEMICOLON
     ;
 
 exp
-    : LPAREN exp RPAREN          # parenExp
+    : addExp
-    | var                        # varExp
-    | number                     # numberExp
-    | exp ADD exp                # additiveExp
     ;
 
-var
+cond
-    : ID
+    : lOrExp
     ;
 
 lValue
-    : ID
+    : ID (LBRACK exp RBRACK)*
+    ;
+
+primaryExp
+    : LPAREN exp RPAREN
+    | lValue
+    | number
     ;
 
 number
     : ILITERAL
+    | FLITERAL
+    ;
+
+unaryExp
+    : primaryExp
+    | ID LPAREN (funcRParams)? RPAREN
+    | unaryOp unaryExp
+    ;
+
+unaryOp
+    : ADD
+    | SUB
+    | NOT
+    ;
+
+funcRParams
+    : exp (COMMA exp)*
+    ;
+
+mulExp
+    : unaryExp
+    | mulExp (MUL | DIV | MOD) unaryExp
+    ;
+    
+addExp
+    : mulExp
+    | addExp (ADD | SUB) mulExp
+    ;
+
+relExp
+    : addExp
+    | relExp (LT | GT | LE | GE) addExp
+    ;
+
+eqExp
+    : relExp
+    | eqExp (EQ | NE) relExp
+    ;
+
+lAndExp
+    : eqExp
+    | lAndExp AND eqExp
+    ;
+
+lOrExp
+    : lAndExp
+    | lOrExp OR lAndExp
+    ;
+
+constExp
+    : addExp
     ;

src/antlr4/SysYBaseVisitor.cpp

@@ -0,0 +1,7 @@
+
+// Generated from SysY.g4 by ANTLR 4.7.2
+
+
+#include "SysYBaseVisitor.h"
+
+

src/antlr4/SysYBaseVisitor.h

@@ -0,0 +1,144 @@
+
+// Generated from SysY.g4 by ANTLR 4.7.2
+
+#pragma once
+
+
+#include "antlr4-runtime.h"
+#include "SysYVisitor.h"
+
+
+/**
+ * This class provides an empty implementation of SysYVisitor, which can be
+ * extended to create a visitor which only needs to handle a subset of the available methods.
+ */
+class  SysYBaseVisitor : public SysYVisitor {
+public:
+
+  virtual antlrcpp::Any visitCompUnit(SysYParser::CompUnitContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+  virtual antlrcpp::Any visitDecl(SysYParser::DeclContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+  virtual antlrcpp::Any visitConstDecl(SysYParser::ConstDeclContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+  virtual antlrcpp::Any visitBType(SysYParser::BTypeContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+  virtual antlrcpp::Any visitConstDef(SysYParser::ConstDefContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+  virtual antlrcpp::Any visitConstInitVal(SysYParser::ConstInitValContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+  virtual antlrcpp::Any visitVarDecl(SysYParser::VarDeclContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+  virtual antlrcpp::Any visitVarDef(SysYParser::VarDefContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+  virtual antlrcpp::Any visitInitVal(SysYParser::InitValContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+  virtual antlrcpp::Any visitFuncDef(SysYParser::FuncDefContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+  virtual antlrcpp::Any visitFuncType(SysYParser::FuncTypeContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+  virtual antlrcpp::Any visitFuncFParams(SysYParser::FuncFParamsContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+  virtual antlrcpp::Any visitFuncFParam(SysYParser::FuncFParamContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+  virtual antlrcpp::Any visitBlock(SysYParser::BlockContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+  virtual antlrcpp::Any visitBlockItem(SysYParser::BlockItemContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+  virtual antlrcpp::Any visitStmt(SysYParser::StmtContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+  virtual antlrcpp::Any visitExp(SysYParser::ExpContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+  virtual antlrcpp::Any visitCond(SysYParser::CondContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+  virtual antlrcpp::Any visitLVal(SysYParser::LValContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+  virtual antlrcpp::Any visitPrimaryExp(SysYParser::PrimaryExpContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+  virtual antlrcpp::Any visitNumber(SysYParser::NumberContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+  virtual antlrcpp::Any visitUnaryExp(SysYParser::UnaryExpContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+  virtual antlrcpp::Any visitUnaryOp(SysYParser::UnaryOpContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+  virtual antlrcpp::Any visitFuncRParams(SysYParser::FuncRParamsContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+  virtual antlrcpp::Any visitMulExp(SysYParser::MulExpContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+  virtual antlrcpp::Any visitAddExp(SysYParser::AddExpContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+  virtual antlrcpp::Any visitRelExp(SysYParser::RelExpContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+  virtual antlrcpp::Any visitEqExp(SysYParser::EqExpContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+  virtual antlrcpp::Any visitLAndExp(SysYParser::LAndExpContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+  virtual antlrcpp::Any visitLOrExp(SysYParser::LOrExpContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+  virtual antlrcpp::Any visitConstExp(SysYParser::ConstExpContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+
+};
+

src/antlr4/SysYLexer.cpp

@@ -0,0 +1,377 @@
+
+// Generated from SysY.g4 by ANTLR 4.7.2
+
+
+#include "SysYLexer.h"
+
+
+using namespace antlr4;
+
+
+SysYLexer::SysYLexer(CharStream *input) : Lexer(input) {
+  _interpreter = new atn::LexerATNSimulator(this, _atn, _decisionToDFA, _sharedContextCache);
+}
+
+SysYLexer::~SysYLexer() {
+  delete _interpreter;
+}
+
+std::string SysYLexer::getGrammarFileName() const {
+  return "SysY.g4";
+}
+
+const std::vector<std::string>& SysYLexer::getRuleNames() const {
+  return _ruleNames;
+}
+
+const std::vector<std::string>& SysYLexer::getChannelNames() const {
+  return _channelNames;
+}
+
+const std::vector<std::string>& SysYLexer::getModeNames() const {
+  return _modeNames;
+}
+
+const std::vector<std::string>& SysYLexer::getTokenNames() const {
+  return _tokenNames;
+}
+
+dfa::Vocabulary& SysYLexer::getVocabulary() const {
+  return _vocabulary;
+}
+
+const std::vector<uint16_t> SysYLexer::getSerializedATN() const {
+  return _serializedATN;
+}
+
+const atn::ATN& SysYLexer::getATN() const {
+  return _atn;
+}
+
+
+
+
+// Static vars and initialization.
+std::vector<dfa::DFA> SysYLexer::_decisionToDFA;
+atn::PredictionContextCache SysYLexer::_sharedContextCache;
+
+// We own the ATN which in turn owns the ATN states.
+atn::ATN SysYLexer::_atn;
+std::vector<uint16_t> SysYLexer::_serializedATN;
+
+std::vector<std::string> SysYLexer::_ruleNames = {
+  u8"T__0", u8"T__1", u8"T__2", u8"T__3", u8"T__4", u8"T__5", u8"T__6", 
+  u8"T__7", u8"T__8", u8"T__9", u8"T__10", u8"T__11", u8"T__12", u8"T__13", 
+  u8"T__14", u8"T__15", u8"T__16", u8"T__17", u8"T__18", u8"T__19", u8"T__20", 
+  u8"T__21", u8"T__22", u8"T__23", u8"T__24", u8"T__25", u8"T__26", u8"T__27", 
+  u8"T__28", u8"T__29", u8"T__30", u8"T__31", u8"T__32", u8"DIGIT", u8"HEXDIGIT", 
+  u8"EXP", u8"PEXP", u8"FloatConst", u8"IntConst", u8"Ident", u8"WS", u8"LINE_COMMENT", 
+  u8"BLOCK_COMMENT"
+};
+
+std::vector<std::string> SysYLexer::_channelNames = {
+  "DEFAULT_TOKEN_CHANNEL", "HIDDEN"
+};
+
+std::vector<std::string> SysYLexer::_modeNames = {
+  u8"DEFAULT_MODE"
+};
+
+std::vector<std::string> SysYLexer::_literalNames = {
+  "", u8"'const'", u8"','", u8"';'", u8"'int'", u8"'float'", u8"'['", u8"']'", 
+  u8"'='", u8"'{'", u8"'}'", u8"'('", u8"')'", u8"'void'", u8"'if'", u8"'else'", 
+  u8"'while'", u8"'break'", u8"'continue'", u8"'return'", u8"'+'", u8"'-'", 
+  u8"'!'", u8"'*'", u8"'/'", u8"'%'", u8"'<'", u8"'>'", u8"'<='", u8"'>='", 
+  u8"'=='", u8"'!='", u8"'&&'", u8"'||'"
+};
+
+std::vector<std::string> SysYLexer::_symbolicNames = {
+  "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", 
+  "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", u8"FloatConst", 
+  u8"IntConst", u8"Ident", u8"WS", u8"LINE_COMMENT", u8"BLOCK_COMMENT"
+};
+
+dfa::Vocabulary SysYLexer::_vocabulary(_literalNames, _symbolicNames);
+
+std::vector<std::string> SysYLexer::_tokenNames;
+
+SysYLexer::Initializer::Initializer() {
+  // This code could be in a static initializer lambda, but VS doesn't allow access to private class members from there.
+	for (size_t i = 0; i < _symbolicNames.size(); ++i) {
+		std::string name = _vocabulary.getLiteralName(i);
+		if (name.empty()) {
+			name = _vocabulary.getSymbolicName(i);
+		}
+
+		if (name.empty()) {
+			_tokenNames.push_back("<INVALID>");
+		} else {
+      _tokenNames.push_back(name);
+    }
+	}
+
+  _serializedATN = {
+    0x3, 0x608b, 0xa72a, 0x8133, 0xb9ed, 0x417c, 0x3be7, 0x7786, 0x5964, 
+    0x2, 0x29, 0x160, 0x8, 0x1, 0x4, 0x2, 0x9, 0x2, 0x4, 0x3, 0x9, 0x3, 
+    0x4, 0x4, 0x9, 0x4, 0x4, 0x5, 0x9, 0x5, 0x4, 0x6, 0x9, 0x6, 0x4, 0x7, 
+    0x9, 0x7, 0x4, 0x8, 0x9, 0x8, 0x4, 0x9, 0x9, 0x9, 0x4, 0xa, 0x9, 0xa, 
+    0x4, 0xb, 0x9, 0xb, 0x4, 0xc, 0x9, 0xc, 0x4, 0xd, 0x9, 0xd, 0x4, 0xe, 
+    0x9, 0xe, 0x4, 0xf, 0x9, 0xf, 0x4, 0x10, 0x9, 0x10, 0x4, 0x11, 0x9, 
+    0x11, 0x4, 0x12, 0x9, 0x12, 0x4, 0x13, 0x9, 0x13, 0x4, 0x14, 0x9, 0x14, 
+    0x4, 0x15, 0x9, 0x15, 0x4, 0x16, 0x9, 0x16, 0x4, 0x17, 0x9, 0x17, 0x4, 
+    0x18, 0x9, 0x18, 0x4, 0x19, 0x9, 0x19, 0x4, 0x1a, 0x9, 0x1a, 0x4, 0x1b, 
+    0x9, 0x1b, 0x4, 0x1c, 0x9, 0x1c, 0x4, 0x1d, 0x9, 0x1d, 0x4, 0x1e, 0x9, 
+    0x1e, 0x4, 0x1f, 0x9, 0x1f, 0x4, 0x20, 0x9, 0x20, 0x4, 0x21, 0x9, 0x21, 
+    0x4, 0x22, 0x9, 0x22, 0x4, 0x23, 0x9, 0x23, 0x4, 0x24, 0x9, 0x24, 0x4, 
+    0x25, 0x9, 0x25, 0x4, 0x26, 0x9, 0x26, 0x4, 0x27, 0x9, 0x27, 0x4, 0x28, 
+    0x9, 0x28, 0x4, 0x29, 0x9, 0x29, 0x4, 0x2a, 0x9, 0x2a, 0x4, 0x2b, 0x9, 
+    0x2b, 0x4, 0x2c, 0x9, 0x2c, 0x3, 0x2, 0x3, 0x2, 0x3, 0x2, 0x3, 0x2, 
+    0x3, 0x2, 0x3, 0x2, 0x3, 0x3, 0x3, 0x3, 0x3, 0x4, 0x3, 0x4, 0x3, 0x5, 
+    0x3, 0x5, 0x3, 0x5, 0x3, 0x5, 0x3, 0x6, 0x3, 0x6, 0x3, 0x6, 0x3, 0x6, 
+    0x3, 0x6, 0x3, 0x6, 0x3, 0x7, 0x3, 0x7, 0x3, 0x8, 0x3, 0x8, 0x3, 0x9, 
+    0x3, 0x9, 0x3, 0xa, 0x3, 0xa, 0x3, 0xb, 0x3, 0xb, 0x3, 0xc, 0x3, 0xc, 
+    0x3, 0xd, 0x3, 0xd, 0x3, 0xe, 0x3, 0xe, 0x3, 0xe, 0x3, 0xe, 0x3, 0xe, 
+    0x3, 0xf, 0x3, 0xf, 0x3, 0xf, 0x3, 0x10, 0x3, 0x10, 0x3, 0x10, 0x3, 
+    0x10, 0x3, 0x10, 0x3, 0x11, 0x3, 0x11, 0x3, 0x11, 0x3, 0x11, 0x3, 0x11, 
+    0x3, 0x11, 0x3, 0x12, 0x3, 0x12, 0x3, 0x12, 0x3, 0x12, 0x3, 0x12, 0x3, 
+    0x12, 0x3, 0x13, 0x3, 0x13, 0x3, 0x13, 0x3, 0x13, 0x3, 0x13, 0x3, 0x13, 
+    0x3, 0x13, 0x3, 0x13, 0x3, 0x13, 0x3, 0x14, 0x3, 0x14, 0x3, 0x14, 0x3, 
+    0x14, 0x3, 0x14, 0x3, 0x14, 0x3, 0x14, 0x3, 0x15, 0x3, 0x15, 0x3, 0x16, 
+    0x3, 0x16, 0x3, 0x17, 0x3, 0x17, 0x3, 0x18, 0x3, 0x18, 0x3, 0x19, 0x3, 
+    0x19, 0x3, 0x1a, 0x3, 0x1a, 0x3, 0x1b, 0x3, 0x1b, 0x3, 0x1c, 0x3, 0x1c, 
+    0x3, 0x1d, 0x3, 0x1d, 0x3, 0x1d, 0x3, 0x1e, 0x3, 0x1e, 0x3, 0x1e, 0x3, 
+    0x1f, 0x3, 0x1f, 0x3, 0x1f, 0x3, 0x20, 0x3, 0x20, 0x3, 0x20, 0x3, 0x21, 
+    0x3, 0x21, 0x3, 0x21, 0x3, 0x22, 0x3, 0x22, 0x3, 0x22, 0x3, 0x23, 0x3, 
+    0x23, 0x3, 0x24, 0x3, 0x24, 0x3, 0x25, 0x3, 0x25, 0x5, 0x25, 0xcd, 0xa, 
+    0x25, 0x3, 0x25, 0x6, 0x25, 0xd0, 0xa, 0x25, 0xd, 0x25, 0xe, 0x25, 0xd1, 
+    0x3, 0x26, 0x3, 0x26, 0x5, 0x26, 0xd6, 0xa, 0x26, 0x3, 0x26, 0x6, 0x26, 
+    0xd9, 0xa, 0x26, 0xd, 0x26, 0xe, 0x26, 0xda, 0x3, 0x27, 0x3, 0x27, 0x3, 
+    0x27, 0x3, 0x27, 0x5, 0x27, 0xe1, 0xa, 0x27, 0x3, 0x27, 0x6, 0x27, 0xe4, 
+    0xa, 0x27, 0xd, 0x27, 0xe, 0x27, 0xe5, 0x3, 0x27, 0x3, 0x27, 0x7, 0x27, 
+    0xea, 0xa, 0x27, 0xc, 0x27, 0xe, 0x27, 0xed, 0xb, 0x27, 0x3, 0x27, 0x3, 
+    0x27, 0x6, 0x27, 0xf1, 0xa, 0x27, 0xd, 0x27, 0xe, 0x27, 0xf2, 0x3, 0x27, 
+    0x6, 0x27, 0xf6, 0xa, 0x27, 0xd, 0x27, 0xe, 0x27, 0xf7, 0x5, 0x27, 0xfa, 
+    0xa, 0x27, 0x3, 0x27, 0x3, 0x27, 0x3, 0x27, 0x3, 0x27, 0x6, 0x27, 0x100, 
+    0xa, 0x27, 0xd, 0x27, 0xe, 0x27, 0x101, 0x3, 0x27, 0x5, 0x27, 0x105, 
+    0xa, 0x27, 0x3, 0x27, 0x6, 0x27, 0x108, 0xa, 0x27, 0xd, 0x27, 0xe, 0x27, 
+    0x109, 0x3, 0x27, 0x3, 0x27, 0x7, 0x27, 0x10e, 0xa, 0x27, 0xc, 0x27, 
+    0xe, 0x27, 0x111, 0xb, 0x27, 0x3, 0x27, 0x5, 0x27, 0x114, 0xa, 0x27, 
+    0x3, 0x27, 0x6, 0x27, 0x117, 0xa, 0x27, 0xd, 0x27, 0xe, 0x27, 0x118, 
+    0x3, 0x27, 0x3, 0x27, 0x5, 0x27, 0x11d, 0xa, 0x27, 0x3, 0x28, 0x3, 0x28, 
+    0x3, 0x28, 0x7, 0x28, 0x122, 0xa, 0x28, 0xc, 0x28, 0xe, 0x28, 0x125, 
+    0xb, 0x28, 0x3, 0x28, 0x3, 0x28, 0x6, 0x28, 0x129, 0xa, 0x28, 0xd, 0x28, 
+    0xe, 0x28, 0x12a, 0x3, 0x28, 0x3, 0x28, 0x3, 0x28, 0x3, 0x28, 0x5, 0x28, 
+    0x131, 0xa, 0x28, 0x3, 0x28, 0x6, 0x28, 0x134, 0xa, 0x28, 0xd, 0x28, 
+    0xe, 0x28, 0x135, 0x5, 0x28, 0x138, 0xa, 0x28, 0x3, 0x29, 0x3, 0x29, 
+    0x7, 0x29, 0x13c, 0xa, 0x29, 0xc, 0x29, 0xe, 0x29, 0x13f, 0xb, 0x29, 
+    0x3, 0x2a, 0x6, 0x2a, 0x142, 0xa, 0x2a, 0xd, 0x2a, 0xe, 0x2a, 0x143, 
+    0x3, 0x2a, 0x3, 0x2a, 0x3, 0x2b, 0x3, 0x2b, 0x3, 0x2b, 0x3, 0x2b, 0x7, 
+    0x2b, 0x14c, 0xa, 0x2b, 0xc, 0x2b, 0xe, 0x2b, 0x14f, 0xb, 0x2b, 0x3, 
+    0x2b, 0x3, 0x2b, 0x3, 0x2c, 0x3, 0x2c, 0x3, 0x2c, 0x3, 0x2c, 0x7, 0x2c, 
+    0x157, 0xa, 0x2c, 0xc, 0x2c, 0xe, 0x2c, 0x15a, 0xb, 0x2c, 0x3, 0x2c, 
+    0x3, 0x2c, 0x3, 0x2c, 0x3, 0x2c, 0x3, 0x2c, 0x3, 0x158, 0x2, 0x2d, 0x3, 
+    0x3, 0x5, 0x4, 0x7, 0x5, 0x9, 0x6, 0xb, 0x7, 0xd, 0x8, 0xf, 0x9, 0x11, 
+    0xa, 0x13, 0xb, 0x15, 0xc, 0x17, 0xd, 0x19, 0xe, 0x1b, 0xf, 0x1d, 0x10, 
+    0x1f, 0x11, 0x21, 0x12, 0x23, 0x13, 0x25, 0x14, 0x27, 0x15, 0x29, 0x16, 
+    0x2b, 0x17, 0x2d, 0x18, 0x2f, 0x19, 0x31, 0x1a, 0x33, 0x1b, 0x35, 0x1c, 
+    0x37, 0x1d, 0x39, 0x1e, 0x3b, 0x1f, 0x3d, 0x20, 0x3f, 0x21, 0x41, 0x22, 
+    0x43, 0x23, 0x45, 0x2, 0x47, 0x2, 0x49, 0x2, 0x4b, 0x2, 0x4d, 0x24, 
+    0x4f, 0x25, 0x51, 0x26, 0x53, 0x27, 0x55, 0x28, 0x57, 0x29, 0x3, 0x2, 
+    0xd, 0x3, 0x2, 0x32, 0x3b, 0x5, 0x2, 0x32, 0x3b, 0x43, 0x48, 0x63, 0x68, 
+    0x4, 0x2, 0x47, 0x47, 0x67, 0x67, 0x4, 0x2, 0x2d, 0x2d, 0x2f, 0x2f, 
+    0x4, 0x2, 0x52, 0x52, 0x72, 0x72, 0x3, 0x2, 0x33, 0x3b, 0x3, 0x2, 0x32, 
+    0x39, 0x5, 0x2, 0x43, 0x5c, 0x61, 0x61, 0x63, 0x7c, 0x6, 0x2, 0x32, 
+    0x3b, 0x43, 0x5c, 0x61, 0x61, 0x63, 0x7c, 0x5, 0x2, 0xb, 0xc, 0xf, 0xf, 
+    0x22, 0x22, 0x4, 0x2, 0xc, 0xc, 0xf, 0xf, 0x2, 0x17a, 0x2, 0x3, 0x3, 
+    0x2, 0x2, 0x2, 0x2, 0x5, 0x3, 0x2, 0x2, 0x2, 0x2, 0x7, 0x3, 0x2, 0x2, 
+    0x2, 0x2, 0x9, 0x3, 0x2, 0x2, 0x2, 0x2, 0xb, 0x3, 0x2, 0x2, 0x2, 0x2, 
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+    0x2, 0x2, 0x12a, 0x128, 0x3, 0x2, 0x2, 0x2, 0x12a, 0x12b, 0x3, 0x2, 
+    0x2, 0x2, 0x12b, 0x138, 0x3, 0x2, 0x2, 0x2, 0x12c, 0x12d, 0x7, 0x32, 
+    0x2, 0x2, 0x12d, 0x131, 0x7, 0x7a, 0x2, 0x2, 0x12e, 0x12f, 0x7, 0x32, 
+    0x2, 0x2, 0x12f, 0x131, 0x7, 0x5a, 0x2, 0x2, 0x130, 0x12c, 0x3, 0x2, 
+    0x2, 0x2, 0x130, 0x12e, 0x3, 0x2, 0x2, 0x2, 0x131, 0x133, 0x3, 0x2, 
+    0x2, 0x2, 0x132, 0x134, 0x9, 0x3, 0x2, 0x2, 0x133, 0x132, 0x3, 0x2, 
+    0x2, 0x2, 0x134, 0x135, 0x3, 0x2, 0x2, 0x2, 0x135, 0x133, 0x3, 0x2, 
+    0x2, 0x2, 0x135, 0x136, 0x3, 0x2, 0x2, 0x2, 0x136, 0x138, 0x3, 0x2, 
+    0x2, 0x2, 0x137, 0x11e, 0x3, 0x2, 0x2, 0x2, 0x137, 0x11f, 0x3, 0x2, 
+    0x2, 0x2, 0x137, 0x126, 0x3, 0x2, 0x2, 0x2, 0x137, 0x130, 0x3, 0x2, 
+    0x2, 0x2, 0x138, 0x50, 0x3, 0x2, 0x2, 0x2, 0x139, 0x13d, 0x9, 0x9, 0x2, 
+    0x2, 0x13a, 0x13c, 0x9, 0xa, 0x2, 0x2, 0x13b, 0x13a, 0x3, 0x2, 0x2, 
+    0x2, 0x13c, 0x13f, 0x3, 0x2, 0x2, 0x2, 0x13d, 0x13b, 0x3, 0x2, 0x2, 
+    0x2, 0x13d, 0x13e, 0x3, 0x2, 0x2, 0x2, 0x13e, 0x52, 0x3, 0x2, 0x2, 0x2, 
+    0x13f, 0x13d, 0x3, 0x2, 0x2, 0x2, 0x140, 0x142, 0x9, 0xb, 0x2, 0x2, 
+    0x141, 0x140, 0x3, 0x2, 0x2, 0x2, 0x142, 0x143, 0x3, 0x2, 0x2, 0x2, 
+    0x143, 0x141, 0x3, 0x2, 0x2, 0x2, 0x143, 0x144, 0x3, 0x2, 0x2, 0x2, 
+    0x144, 0x145, 0x3, 0x2, 0x2, 0x2, 0x145, 0x146, 0x8, 0x2a, 0x2, 0x2, 
+    0x146, 0x54, 0x3, 0x2, 0x2, 0x2, 0x147, 0x148, 0x7, 0x31, 0x2, 0x2, 
+    0x148, 0x149, 0x7, 0x31, 0x2, 0x2, 0x149, 0x14d, 0x3, 0x2, 0x2, 0x2, 
+    0x14a, 0x14c, 0xa, 0xc, 0x2, 0x2, 0x14b, 0x14a, 0x3, 0x2, 0x2, 0x2, 
+    0x14c, 0x14f, 0x3, 0x2, 0x2, 0x2, 0x14d, 0x14b, 0x3, 0x2, 0x2, 0x2, 
+    0x14d, 0x14e, 0x3, 0x2, 0x2, 0x2, 0x14e, 0x150, 0x3, 0x2, 0x2, 0x2, 
+    0x14f, 0x14d, 0x3, 0x2, 0x2, 0x2, 0x150, 0x151, 0x8, 0x2b, 0x2, 0x2, 
+    0x151, 0x56, 0x3, 0x2, 0x2, 0x2, 0x152, 0x153, 0x7, 0x31, 0x2, 0x2, 
+    0x153, 0x154, 0x7, 0x2c, 0x2, 0x2, 0x154, 0x158, 0x3, 0x2, 0x2, 0x2, 
+    0x155, 0x157, 0xb, 0x2, 0x2, 0x2, 0x156, 0x155, 0x3, 0x2, 0x2, 0x2, 
+    0x157, 0x15a, 0x3, 0x2, 0x2, 0x2, 0x158, 0x159, 0x3, 0x2, 0x2, 0x2, 
+    0x158, 0x156, 0x3, 0x2, 0x2, 0x2, 0x159, 0x15b, 0x3, 0x2, 0x2, 0x2, 
+    0x15a, 0x158, 0x3, 0x2, 0x2, 0x2, 0x15b, 0x15c, 0x7, 0x2c, 0x2, 0x2, 
+    0x15c, 0x15d, 0x7, 0x31, 0x2, 0x2, 0x15d, 0x15e, 0x3, 0x2, 0x2, 0x2, 
+    0x15e, 0x15f, 0x8, 0x2c, 0x2, 0x2, 0x15f, 0x58, 0x3, 0x2, 0x2, 0x2, 
+    0x1d, 0x2, 0xcc, 0xd1, 0xd5, 0xda, 0xe0, 0xe5, 0xeb, 0xf2, 0xf7, 0xf9, 
+    0x101, 0x104, 0x109, 0x10f, 0x113, 0x118, 0x11c, 0x123, 0x12a, 0x130, 
+    0x135, 0x137, 0x13d, 0x143, 0x14d, 0x158, 0x3, 0x8, 0x2, 0x2, 
+  };
+
+  atn::ATNDeserializer deserializer;
+  _atn = deserializer.deserialize(_serializedATN);
+
+  size_t count = _atn.getNumberOfDecisions();
+  _decisionToDFA.reserve(count);
+  for (size_t i = 0; i < count; i++) { 
+    _decisionToDFA.emplace_back(_atn.getDecisionState(i), i);
+  }
+}
+
+SysYLexer::Initializer SysYLexer::_init;

src/antlr4/SysYLexer.h

@@ -0,0 +1,62 @@
+
+// Generated from SysY.g4 by ANTLR 4.7.2
+
+#pragma once
+
+
+#include "antlr4-runtime.h"
+
+
+
+
+class  SysYLexer : public antlr4::Lexer {
+public:
+  enum {
+    T__0 = 1, T__1 = 2, T__2 = 3, T__3 = 4, T__4 = 5, T__5 = 6, T__6 = 7, 
+    T__7 = 8, T__8 = 9, T__9 = 10, T__10 = 11, T__11 = 12, T__12 = 13, T__13 = 14, 
+    T__14 = 15, T__15 = 16, T__16 = 17, T__17 = 18, T__18 = 19, T__19 = 20, 
+    T__20 = 21, T__21 = 22, T__22 = 23, T__23 = 24, T__24 = 25, T__25 = 26, 
+    T__26 = 27, T__27 = 28, T__28 = 29, T__29 = 30, T__30 = 31, T__31 = 32, 
+    T__32 = 33, FloatConst = 34, IntConst = 35, Ident = 36, WS = 37, LINE_COMMENT = 38, 
+    BLOCK_COMMENT = 39
+  };
+
+  SysYLexer(antlr4::CharStream *input);
+  ~SysYLexer();
+
+  virtual std::string getGrammarFileName() const override;
+  virtual const std::vector<std::string>& getRuleNames() const override;
+
+  virtual const std::vector<std::string>& getChannelNames() const override;
+  virtual const std::vector<std::string>& getModeNames() const override;
+  virtual const std::vector<std::string>& getTokenNames() const override; // deprecated, use vocabulary instead
+  virtual antlr4::dfa::Vocabulary& getVocabulary() const override;
+
+  virtual const std::vector<uint16_t> getSerializedATN() const override;
+  virtual const antlr4::atn::ATN& getATN() const override;
+
+private:
+  static std::vector<antlr4::dfa::DFA> _decisionToDFA;
+  static antlr4::atn::PredictionContextCache _sharedContextCache;
+  static std::vector<std::string> _ruleNames;
+  static std::vector<std::string> _tokenNames;
+  static std::vector<std::string> _channelNames;
+  static std::vector<std::string> _modeNames;
+
+  static std::vector<std::string> _literalNames;
+  static std::vector<std::string> _symbolicNames;
+  static antlr4::dfa::Vocabulary _vocabulary;
+  static antlr4::atn::ATN _atn;
+  static std::vector<uint16_t> _serializedATN;
+
+
+  // Individual action functions triggered by action() above.
+
+  // Individual semantic predicate functions triggered by sempred() above.
+
+  struct Initializer {
+    Initializer();
+  };
+  static Initializer _init;
+};
+

src/antlr4/SysYParser.h

@@ -0,0 +1,513 @@
+
+// Generated from SysY.g4 by ANTLR 4.7.2
+
+#pragma once
+
+
+#include "antlr4-runtime.h"
+
+
+
+
+class  SysYParser : public antlr4::Parser {
+public:
+  enum {
+    T__0 = 1, T__1 = 2, T__2 = 3, T__3 = 4, T__4 = 5, T__5 = 6, T__6 = 7, 
+    T__7 = 8, T__8 = 9, T__9 = 10, T__10 = 11, T__11 = 12, T__12 = 13, T__13 = 14, 
+    T__14 = 15, T__15 = 16, T__16 = 17, T__17 = 18, T__18 = 19, T__19 = 20, 
+    T__20 = 21, T__21 = 22, T__22 = 23, T__23 = 24, T__24 = 25, T__25 = 26, 
+    T__26 = 27, T__27 = 28, T__28 = 29, T__29 = 30, T__30 = 31, T__31 = 32, 
+    T__32 = 33, FloatConst = 34, IntConst = 35, Ident = 36, WS = 37, LINE_COMMENT = 38, 
+    BLOCK_COMMENT = 39
+  };
+
+  enum {
+    RuleCompUnit = 0, RuleDecl = 1, RuleConstDecl = 2, RuleBType = 3, RuleConstDef = 4, 
+    RuleConstInitVal = 5, RuleVarDecl = 6, RuleVarDef = 7, RuleInitVal = 8, 
+    RuleFuncDef = 9, RuleFuncType = 10, RuleFuncFParams = 11, RuleFuncFParam = 12, 
+    RuleBlock = 13, RuleBlockItem = 14, RuleStmt = 15, RuleExp = 16, RuleCond = 17, 
+    RuleLVal = 18, RulePrimaryExp = 19, RuleNumber = 20, RuleUnaryExp = 21, 
+    RuleUnaryOp = 22, RuleFuncRParams = 23, RuleMulExp = 24, RuleAddExp = 25, 
+    RuleRelExp = 26, RuleEqExp = 27, RuleLAndExp = 28, RuleLOrExp = 29, 
+    RuleConstExp = 30
+  };
+
+  SysYParser(antlr4::TokenStream *input);
+  ~SysYParser();
+
+  virtual std::string getGrammarFileName() const override;
+  virtual const antlr4::atn::ATN& getATN() const override { return _atn; };
+  virtual const std::vector<std::string>& getTokenNames() const override { return _tokenNames; }; // deprecated: use vocabulary instead.
+  virtual const std::vector<std::string>& getRuleNames() const override;
+  virtual antlr4::dfa::Vocabulary& getVocabulary() const override;
+
+
+  class CompUnitContext;
+  class DeclContext;
+  class ConstDeclContext;
+  class BTypeContext;
+  class ConstDefContext;
+  class ConstInitValContext;
+  class VarDeclContext;
+  class VarDefContext;
+  class InitValContext;
+  class FuncDefContext;
+  class FuncTypeContext;
+  class FuncFParamsContext;
+  class FuncFParamContext;
+  class BlockContext;
+  class BlockItemContext;
+  class StmtContext;
+  class ExpContext;
+  class CondContext;
+  class LValContext;
+  class PrimaryExpContext;
+  class NumberContext;
+  class UnaryExpContext;
+  class UnaryOpContext;
+  class FuncRParamsContext;
+  class MulExpContext;
+  class AddExpContext;
+  class RelExpContext;
+  class EqExpContext;
+  class LAndExpContext;
+  class LOrExpContext;
+  class ConstExpContext; 
+
+  class  CompUnitContext : public antlr4::ParserRuleContext {
+  public:
+    CompUnitContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+    std::vector<DeclContext *> decl();
+    DeclContext* decl(size_t i);
+    std::vector<FuncDefContext *> funcDef();
+    FuncDefContext* funcDef(size_t i);
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  CompUnitContext* compUnit();
+
+  class  DeclContext : public antlr4::ParserRuleContext {
+  public:
+    DeclContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+    ConstDeclContext *constDecl();
+    VarDeclContext *varDecl();
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  DeclContext* decl();
+
+  class  ConstDeclContext : public antlr4::ParserRuleContext {
+  public:
+    ConstDeclContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+    BTypeContext *bType();
+    std::vector<ConstDefContext *> constDef();
+    ConstDefContext* constDef(size_t i);
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  ConstDeclContext* constDecl();
+
+  class  BTypeContext : public antlr4::ParserRuleContext {
+  public:
+    BTypeContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  BTypeContext* bType();
+
+  class  ConstDefContext : public antlr4::ParserRuleContext {
+  public:
+    ConstDefContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+    antlr4::tree::TerminalNode *Ident();
+    ConstInitValContext *constInitVal();
+    std::vector<ConstExpContext *> constExp();
+    ConstExpContext* constExp(size_t i);
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  ConstDefContext* constDef();
+
+  class  ConstInitValContext : public antlr4::ParserRuleContext {
+  public:
+    ConstInitValContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+    ConstExpContext *constExp();
+    std::vector<ConstInitValContext *> constInitVal();
+    ConstInitValContext* constInitVal(size_t i);
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  ConstInitValContext* constInitVal();
+
+  class  VarDeclContext : public antlr4::ParserRuleContext {
+  public:
+    VarDeclContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+    BTypeContext *bType();
+    std::vector<VarDefContext *> varDef();
+    VarDefContext* varDef(size_t i);
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  VarDeclContext* varDecl();
+
+  class  VarDefContext : public antlr4::ParserRuleContext {
+  public:
+    VarDefContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+    antlr4::tree::TerminalNode *Ident();
+    std::vector<ConstExpContext *> constExp();
+    ConstExpContext* constExp(size_t i);
+    InitValContext *initVal();
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  VarDefContext* varDef();
+
+  class  InitValContext : public antlr4::ParserRuleContext {
+  public:
+    InitValContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+    ExpContext *exp();
+    std::vector<InitValContext *> initVal();
+    InitValContext* initVal(size_t i);
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  InitValContext* initVal();
+
+  class  FuncDefContext : public antlr4::ParserRuleContext {
+  public:
+    FuncDefContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+    FuncTypeContext *funcType();
+    antlr4::tree::TerminalNode *Ident();
+    BlockContext *block();
+    FuncFParamsContext *funcFParams();
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  FuncDefContext* funcDef();
+
+  class  FuncTypeContext : public antlr4::ParserRuleContext {
+  public:
+    FuncTypeContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  FuncTypeContext* funcType();
+
+  class  FuncFParamsContext : public antlr4::ParserRuleContext {
+  public:
+    FuncFParamsContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+    std::vector<FuncFParamContext *> funcFParam();
+    FuncFParamContext* funcFParam(size_t i);
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  FuncFParamsContext* funcFParams();
+
+  class  FuncFParamContext : public antlr4::ParserRuleContext {
+  public:
+    FuncFParamContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+    BTypeContext *bType();
+    antlr4::tree::TerminalNode *Ident();
+    std::vector<ExpContext *> exp();
+    ExpContext* exp(size_t i);
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  FuncFParamContext* funcFParam();
+
+  class  BlockContext : public antlr4::ParserRuleContext {
+  public:
+    BlockContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+    std::vector<BlockItemContext *> blockItem();
+    BlockItemContext* blockItem(size_t i);
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  BlockContext* block();
+
+  class  BlockItemContext : public antlr4::ParserRuleContext {
+  public:
+    BlockItemContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+    DeclContext *decl();
+    StmtContext *stmt();
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  BlockItemContext* blockItem();
+
+  class  StmtContext : public antlr4::ParserRuleContext {
+  public:
+    StmtContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+    LValContext *lVal();
+    ExpContext *exp();
+    BlockContext *block();
+    CondContext *cond();
+    std::vector<StmtContext *> stmt();
+    StmtContext* stmt(size_t i);
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  StmtContext* stmt();
+
+  class  ExpContext : public antlr4::ParserRuleContext {
+  public:
+    ExpContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+    AddExpContext *addExp();
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  ExpContext* exp();
+
+  class  CondContext : public antlr4::ParserRuleContext {
+  public:
+    CondContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+    LOrExpContext *lOrExp();
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  CondContext* cond();
+
+  class  LValContext : public antlr4::ParserRuleContext {
+  public:
+    LValContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+    antlr4::tree::TerminalNode *Ident();
+    std::vector<ExpContext *> exp();
+    ExpContext* exp(size_t i);
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  LValContext* lVal();
+
+  class  PrimaryExpContext : public antlr4::ParserRuleContext {
+  public:
+    PrimaryExpContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+    ExpContext *exp();
+    LValContext *lVal();
+    NumberContext *number();
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  PrimaryExpContext* primaryExp();
+
+  class  NumberContext : public antlr4::ParserRuleContext {
+  public:
+    NumberContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+    antlr4::tree::TerminalNode *FloatConst();
+    antlr4::tree::TerminalNode *IntConst();
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  NumberContext* number();
+
+  class  UnaryExpContext : public antlr4::ParserRuleContext {
+  public:
+    UnaryExpContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+    PrimaryExpContext *primaryExp();
+    antlr4::tree::TerminalNode *Ident();
+    FuncRParamsContext *funcRParams();
+    UnaryOpContext *unaryOp();
+    UnaryExpContext *unaryExp();
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  UnaryExpContext* unaryExp();
+
+  class  UnaryOpContext : public antlr4::ParserRuleContext {
+  public:
+    UnaryOpContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  UnaryOpContext* unaryOp();
+
+  class  FuncRParamsContext : public antlr4::ParserRuleContext {
+  public:
+    FuncRParamsContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+    std::vector<ExpContext *> exp();
+    ExpContext* exp(size_t i);
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  FuncRParamsContext* funcRParams();
+
+  class  MulExpContext : public antlr4::ParserRuleContext {
+  public:
+    MulExpContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+    std::vector<UnaryExpContext *> unaryExp();
+    UnaryExpContext* unaryExp(size_t i);
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  MulExpContext* mulExp();
+
+  class  AddExpContext : public antlr4::ParserRuleContext {
+  public:
+    AddExpContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+    std::vector<MulExpContext *> mulExp();
+    MulExpContext* mulExp(size_t i);
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  AddExpContext* addExp();
+
+  class  RelExpContext : public antlr4::ParserRuleContext {
+  public:
+    RelExpContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+    std::vector<AddExpContext *> addExp();
+    AddExpContext* addExp(size_t i);
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  RelExpContext* relExp();
+
+  class  EqExpContext : public antlr4::ParserRuleContext {
+  public:
+    EqExpContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+    std::vector<RelExpContext *> relExp();
+    RelExpContext* relExp(size_t i);
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  EqExpContext* eqExp();
+
+  class  LAndExpContext : public antlr4::ParserRuleContext {
+  public:
+    LAndExpContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+    std::vector<EqExpContext *> eqExp();
+    EqExpContext* eqExp(size_t i);
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  LAndExpContext* lAndExp();
+
+  class  LOrExpContext : public antlr4::ParserRuleContext {
+  public:
+    LOrExpContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+    std::vector<LAndExpContext *> lAndExp();
+    LAndExpContext* lAndExp(size_t i);
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  LOrExpContext* lOrExp();
+
+  class  ConstExpContext : public antlr4::ParserRuleContext {
+  public:
+    ConstExpContext(antlr4::ParserRuleContext *parent, size_t invokingState);
+    virtual size_t getRuleIndex() const override;
+    AddExpContext *addExp();
+
+    virtual antlrcpp::Any accept(antlr4::tree::ParseTreeVisitor *visitor) override;
+   
+  };
+
+  ConstExpContext* constExp();
+
+
+private:
+  static std::vector<antlr4::dfa::DFA> _decisionToDFA;
+  static antlr4::atn::PredictionContextCache _sharedContextCache;
+  static std::vector<std::string> _ruleNames;
+  static std::vector<std::string> _tokenNames;
+
+  static std::vector<std::string> _literalNames;
+  static std::vector<std::string> _symbolicNames;
+  static antlr4::dfa::Vocabulary _vocabulary;
+  static antlr4::atn::ATN _atn;
+  static std::vector<uint16_t> _serializedATN;
+
+
+  struct Initializer {
+    Initializer();
+  };
+  static Initializer _init;
+};
+

src/antlr4/SysYVisitor.cpp

@@ -0,0 +1,7 @@
+
+// Generated from SysY.g4 by ANTLR 4.7.2
+
+
+#include "SysYVisitor.h"
+
+

src/antlr4/SysYVisitor.h

@@ -0,0 +1,86 @@
+
+// Generated from SysY.g4 by ANTLR 4.7.2
+
+#pragma once
+
+
+#include "antlr4-runtime.h"
+#include "SysYParser.h"
+
+
+
+/**
+ * This class defines an abstract visitor for a parse tree
+ * produced by SysYParser.
+ */
+class  SysYVisitor : public antlr4::tree::AbstractParseTreeVisitor {
+public:
+
+  /**
+   * Visit parse trees produced by SysYParser.
+   */
+    virtual antlrcpp::Any visitCompUnit(SysYParser::CompUnitContext *context) = 0;
+
+    virtual antlrcpp::Any visitDecl(SysYParser::DeclContext *context) = 0;
+
+    virtual antlrcpp::Any visitConstDecl(SysYParser::ConstDeclContext *context) = 0;
+
+    virtual antlrcpp::Any visitBType(SysYParser::BTypeContext *context) = 0;
+
+    virtual antlrcpp::Any visitConstDef(SysYParser::ConstDefContext *context) = 0;
+
+    virtual antlrcpp::Any visitConstInitVal(SysYParser::ConstInitValContext *context) = 0;
+
+    virtual antlrcpp::Any visitVarDecl(SysYParser::VarDeclContext *context) = 0;
+
+    virtual antlrcpp::Any visitVarDef(SysYParser::VarDefContext *context) = 0;
+
+    virtual antlrcpp::Any visitInitVal(SysYParser::InitValContext *context) = 0;
+
+    virtual antlrcpp::Any visitFuncDef(SysYParser::FuncDefContext *context) = 0;
+
+    virtual antlrcpp::Any visitFuncType(SysYParser::FuncTypeContext *context) = 0;
+
+    virtual antlrcpp::Any visitFuncFParams(SysYParser::FuncFParamsContext *context) = 0;
+
+    virtual antlrcpp::Any visitFuncFParam(SysYParser::FuncFParamContext *context) = 0;
+
+    virtual antlrcpp::Any visitBlock(SysYParser::BlockContext *context) = 0;
+
+    virtual antlrcpp::Any visitBlockItem(SysYParser::BlockItemContext *context) = 0;
+
+    virtual antlrcpp::Any visitStmt(SysYParser::StmtContext *context) = 0;
+
+    virtual antlrcpp::Any visitExp(SysYParser::ExpContext *context) = 0;
+
+    virtual antlrcpp::Any visitCond(SysYParser::CondContext *context) = 0;
+
+    virtual antlrcpp::Any visitLVal(SysYParser::LValContext *context) = 0;
+
+    virtual antlrcpp::Any visitPrimaryExp(SysYParser::PrimaryExpContext *context) = 0;
+
+    virtual antlrcpp::Any visitNumber(SysYParser::NumberContext *context) = 0;
+
+    virtual antlrcpp::Any visitUnaryExp(SysYParser::UnaryExpContext *context) = 0;
+
+    virtual antlrcpp::Any visitUnaryOp(SysYParser::UnaryOpContext *context) = 0;
+
+    virtual antlrcpp::Any visitFuncRParams(SysYParser::FuncRParamsContext *context) = 0;
+
+    virtual antlrcpp::Any visitMulExp(SysYParser::MulExpContext *context) = 0;
+
+    virtual antlrcpp::Any visitAddExp(SysYParser::AddExpContext *context) = 0;
+
+    virtual antlrcpp::Any visitRelExp(SysYParser::RelExpContext *context) = 0;
+
+    virtual antlrcpp::Any visitEqExp(SysYParser::EqExpContext *context) = 0;
+
+    virtual antlrcpp::Any visitLAndExp(SysYParser::LAndExpContext *context) = 0;
+
+    virtual antlrcpp::Any visitLOrExp(SysYParser::LOrExpContext *context) = 0;
+
+    virtual antlrcpp::Any visitConstExp(SysYParser::ConstExpContext *context) = 0;
+
+
+};
+

src/ir/BasicBlock.cpp

@@ -9,6 +9,7 @@
 
 #include "ir/IR.h"
 
+#include <algorithm>
 #include <utility>
 
 namespace ir {
@@ -42,4 +43,26 @@ const std::vector<BasicBlock*>& BasicBlock::GetSuccessors() const {
   return successors_;
 }
 
+void BasicBlock::AddPredecessor(BasicBlock* pred) {
+  if (!pred) {
+    return;
+  }
+  if (std::find(predecessors_.begin(), predecessors_.end(), pred) !=
+      predecessors_.end()) {
+    return;
+  }
+  predecessors_.push_back(pred);
+}
+
+void BasicBlock::AddSuccessor(BasicBlock* succ) {
+  if (!succ) {
+    return;
+  }
+  if (std::find(successors_.begin(), successors_.end(), succ) !=
+      successors_.end()) {
+    return;
+  }
+  successors_.push_back(succ);
+}
+
 }  // namespace ir

src/ir/Context.cpp

@@ -17,7 +17,7 @@ ConstantInt* Context::GetConstInt(int v) {
 
 std::string Context::NextTemp() {
   std::ostringstream oss;
-  oss << "%" << ++temp_index_;
+  oss << "%t" << ++temp_index_;
   return oss.str();
 }
 

src/ir/Function.cpp

@@ -3,10 +3,23 @@
 // - 记录函数属性/元信息（按需要扩展）
 #include "ir/IR.h"
 
+#include <stdexcept>
+
+#include "utils/Log.h"
+
 namespace ir {
 
-Function::Function(std::string name, std::shared_ptr<Type> ret_type)
+Argument::Argument(std::shared_ptr<Type> ty, std::string name, size_t index)
-    : Value(std::move(ret_type), std::move(name)) {
+    : Value(std::move(ty), std::move(name)), arg_index_(index) {}
+
+Function::Function(std::string name, std::shared_ptr<Type> ret_type,
+                   std::vector<std::shared_ptr<Type>> param_types)
+    : Value(std::move(ret_type), std::move(name)),
+      param_types_(std::move(param_types)) {
+  for (size_t i = 0; i < param_types_.size(); ++i) {
+    args_.push_back(std::make_unique<Argument>(
+        param_types_[i], "%arg" + std::to_string(i), i));
+  }
   entry_ = CreateBlock("entry");
 }
 
@@ -25,6 +38,19 @@ BasicBlock* Function::GetEntry() { return entry_; }
 
 const BasicBlock* Function::GetEntry() const { return entry_; }
 
+const std::vector<std::shared_ptr<Type>>& Function::GetParamTypes() const {
+  return param_types_;
+}
+
+size_t Function::GetNumParams() const { return param_types_.size(); }
+
+Argument* Function::GetArgument(size_t index) const {
+  if (index >= args_.size()) {
+    throw std::out_of_range(FormatError("ir", "Argument 索引越界"));
+  }
+  return args_[index].get();
+}
+
 const std::vector<std::unique_ptr<BasicBlock>>& Function::GetBlocks() const {
   return blocks_;
 }

src/ir/GlobalValue.cpp

@@ -1,5 +1,4 @@
-// GlobalValue 占位实现：
+// GlobalValue / GlobalVariable 实现。
-// - 具体的全局初始化器、打印和链接语义需要自行补全
 
 #include "ir/IR.h"
 
@@ -8,4 +7,9 @@ namespace ir {
 GlobalValue::GlobalValue(std::shared_ptr<Type> ty, std::string name)
     : User(std::move(ty), std::move(name)) {}
 
+GlobalVariable::GlobalVariable(std::string name, int init_val, int count)
+    : GlobalValue(Type::GetPtrInt32Type(), std::move(name)),
+      init_val_(init_val),
+      count_(count) {}
+
 }  // namespace ir

src/ir/IRBuilder.cpp

@@ -42,6 +42,39 @@ BinaryInst* IRBuilder::CreateAdd(Value* lhs, Value* rhs,
   return CreateBinary(Opcode::Add, lhs, rhs, name);
 }
 
+BinaryInst* IRBuilder::CreateSub(Value* lhs, Value* rhs,
+                                 const std::string& name) {
+  return CreateBinary(Opcode::Sub, lhs, rhs, name);
+}
+
+BinaryInst* IRBuilder::CreateMul(Value* lhs, Value* rhs,
+                                 const std::string& name) {
+  return CreateBinary(Opcode::Mul, lhs, rhs, name);
+}
+
+BinaryInst* IRBuilder::CreateDiv(Value* lhs, Value* rhs,
+                                 const std::string& name) {
+  return CreateBinary(Opcode::Div, lhs, rhs, name);
+}
+
+BinaryInst* IRBuilder::CreateMod(Value* lhs, Value* rhs,
+                                 const std::string& name) {
+  return CreateBinary(Opcode::Mod, lhs, rhs, name);
+}
+
+CmpInst* IRBuilder::CreateCmp(CmpOp op, Value* lhs, Value* rhs,
+                              const std::string& name) {
+  if (!insert_block_) {
+    throw std::runtime_error(FormatError("ir", "IRBuilder 未设置插入点"));
+  }
+  if (!lhs || !rhs) {
+    throw std::runtime_error(
+        FormatError("ir", "IRBuilder::CreateCmp 缺少操作数"));
+  }
+  return insert_block_->Append<CmpInst>(op, Type::GetInt32Type(), lhs, rhs,
+                                        name);
+}
+
 AllocaInst* IRBuilder::CreateAllocaI32(const std::string& name) {
   if (!insert_block_) {
     throw std::runtime_error(FormatError("ir", "IRBuilder 未设置插入点"));
@@ -49,6 +82,26 @@ AllocaInst* IRBuilder::CreateAllocaI32(const std::string& name) {
   return insert_block_->Append<AllocaInst>(Type::GetPtrInt32Type(), name);
 }
 
+AllocaInst* IRBuilder::CreateAllocaArray(int count, const std::string& name) {
+  if (!insert_block_) {
+    throw std::runtime_error(FormatError("ir", "IRBuilder 未设置插入点"));
+  }
+  if (count <= 0) {
+    throw std::runtime_error(FormatError("ir", "IRBuilder::CreateAllocaArray 数组大小必须为正数"));
+  }
+  return insert_block_->Append<AllocaInst>(Type::GetPtrInt32Type(), name, count);
+}
+
+GepInst* IRBuilder::CreateGep(Value* base, Value* index, const std::string& name) {
+  if (!insert_block_) {
+    throw std::runtime_error(FormatError("ir", "IRBuilder 未设置插入点"));
+  }
+  if (!base || !index) {
+    throw std::runtime_error(FormatError("ir", "IRBuilder::CreateGep 缺少操作数"));
+  }
+  return insert_block_->Append<GepInst>(Type::GetPtrInt32Type(), base, index, name);
+}
+
 LoadInst* IRBuilder::CreateLoad(Value* ptr, const std::string& name) {
   if (!insert_block_) {
     throw std::runtime_error(FormatError("ir", "IRBuilder 未设置插入点"));
@@ -75,6 +128,43 @@ StoreInst* IRBuilder::CreateStore(Value* val, Value* ptr) {
   return insert_block_->Append<StoreInst>(Type::GetVoidType(), val, ptr);
 }
 
+BranchInst* IRBuilder::CreateBr(BasicBlock* target) {
+  if (!insert_block_) {
+    throw std::runtime_error(FormatError("ir", "IRBuilder 未设置插入点"));
+  }
+  if (!target) {
+    throw std::runtime_error(
+        FormatError("ir", "IRBuilder::CreateBr 缺少目标块"));
+  }
+  return insert_block_->Append<BranchInst>(Type::GetVoidType(), target);
+}
+
+CondBranchInst* IRBuilder::CreateCondBr(Value* cond, BasicBlock* true_bb,
+                                        BasicBlock* false_bb) {
+  if (!insert_block_) {
+    throw std::runtime_error(FormatError("ir", "IRBuilder 未设置插入点"));
+  }
+  if (!cond || !true_bb || !false_bb) {
+    throw std::runtime_error(
+        FormatError("ir", "IRBuilder::CreateCondBr 参数不完整"));
+  }
+  return insert_block_->Append<CondBranchInst>(Type::GetVoidType(), cond,
+                                               true_bb, false_bb);
+}
+
+CallInst* IRBuilder::CreateCall(Function* callee,
+                                const std::vector<Value*>& args,
+                                const std::string& name) {
+  if (!insert_block_) {
+    throw std::runtime_error(FormatError("ir", "IRBuilder 未设置插入点"));
+  }
+  if (!callee) {
+    throw std::runtime_error(
+        FormatError("ir", "IRBuilder::CreateCall 缺少被调函数"));
+  }
+  return insert_block_->Append<CallInst>(callee->GetType(), callee, args, name);
+}
+
 ReturnInst* IRBuilder::CreateRet(Value* v) {
   if (!insert_block_) {
     throw std::runtime_error(FormatError("ir", "IRBuilder 未设置插入点"));
@@ -86,4 +176,11 @@ ReturnInst* IRBuilder::CreateRet(Value* v) {
   return insert_block_->Append<ReturnInst>(Type::GetVoidType(), v);
 }
 
+ReturnInst* IRBuilder::CreateRetVoid() {
+  if (!insert_block_) {
+    throw std::runtime_error(FormatError("ir", "IRBuilder 未设置插入点"));
+  }
+  return insert_block_->Append<ReturnInst>(Type::GetVoidType(), nullptr);
+}
+
 }  // namespace ir

src/ir/IRPrinter.cpp

@@ -32,6 +32,18 @@ static const char* OpcodeToString(Opcode op) {
       return "sub";
     case Opcode::Mul:
       return "mul";
+    case Opcode::Div:
+      return "sdiv";
+    case Opcode::Mod:
+      return "srem";
+    case Opcode::Cmp:
+      return "icmp";
+    case Opcode::Br:
+      return "br";
+    case Opcode::CondBr:
+      return "br";
+    case Opcode::Call:
+      return "call";
     case Opcode::Alloca:
       return "alloca";
     case Opcode::Load:
@@ -40,6 +52,26 @@ static const char* OpcodeToString(Opcode op) {
       return "store";
     case Opcode::Ret:
       return "ret";
+    case Opcode::Gep:
+      return "getelementptr";
+  }
+  return "?";
+}
+
+static const char* CmpOpToString(CmpOp op) {
+  switch (op) {
+    case CmpOp::Eq:
+      return "eq";
+    case CmpOp::Ne:
+      return "ne";
+    case CmpOp::Lt:
+      return "slt";
+    case CmpOp::Le:
+      return "sle";
+    case CmpOp::Gt:
+      return "sgt";
+    case CmpOp::Ge:
+      return "sge";
   }
   return "?";
 }
@@ -48,13 +80,55 @@ static std::string ValueToString(const Value* v) {
   if (auto* ci = dynamic_cast<const ConstantInt*>(v)) {
     return std::to_string(ci->GetValue());
   }
+  if (auto* gv = dynamic_cast<const GlobalVariable*>(v)) {
+    return "@" + gv->GetName();
+  }
+  if (auto* func = dynamic_cast<const Function*>(v)) {
+    return "@" + func->GetName();
+  }
+  if (auto* arg = dynamic_cast<const Argument*>(v)) {
+    return arg->GetName();
+  }
   return v ? v->GetName() : "<null>";
 }
 
 void IRPrinter::Print(const Module& module, std::ostream& os) {
+  // 先打印全局变量
+  for (const auto& gv : module.GetGlobalVars()) {
+    if (!gv) continue;
+    if (gv->IsArray()) {
+      os << "@" << gv->GetName() << " = global [" << gv->GetCount()
+         << " x i32] zeroinitializer\n";
+    } else {
+      os << "@" << gv->GetName() << " = global i32 " << gv->GetInitValue() << "\n";
+    }
+  }
+  if (!module.GetGlobalVars().empty()) os << "\n";
+
   for (const auto& func : module.GetFunctions()) {
+    if (func->IsExternal()) {
+      // 外部函数声明：declare rettype @name(paramtypes)
+      os << "declare " << TypeToString(*func->GetType()) << " @" << func->GetName() << "(";
+      const auto& ptypes = func->GetParamTypes();
+      for (size_t i = 0; i < ptypes.size(); ++i) {
+        if (i != 0) os << ", ";
+        os << TypeToString(*ptypes[i]);
+      }
+      os << ")\n";
+      continue;
+    }
+
+    std::string params;
+    const auto& param_types = func->GetParamTypes();
+    for (size_t i = 0; i < param_types.size(); ++i) {
+      if (i != 0) {
+        params += ", ";
+      }
+      params += TypeToString(*param_types[i]);
+      params += " %arg" + std::to_string(i);
+    }
     os << "define " << TypeToString(*func->GetType()) << " @" << func->GetName()
-       << "() {\n";
+       << "(" << params << ") {\n";
     for (const auto& bb : func->GetBlocks()) {
       if (!bb) {
         continue;
@@ -65,7 +139,9 @@ void IRPrinter::Print(const Module& module, std::ostream& os) {
         switch (inst->GetOpcode()) {
           case Opcode::Add:
           case Opcode::Sub:
-          case Opcode::Mul: {
+          case Opcode::Mul:
+          case Opcode::Div:
+          case Opcode::Mod: {
             auto* bin = static_cast<const BinaryInst*>(inst);
             os << "  " << bin->GetName() << " = "
                << OpcodeToString(bin->GetOpcode()) << " "
@@ -74,9 +150,23 @@ void IRPrinter::Print(const Module& module, std::ostream& os) {
                << ValueToString(bin->GetRhs()) << "\n";
             break;
           }
+          case Opcode::Cmp: {
+            auto* cmp = static_cast<const CmpInst*>(inst);
+            os << "  " << cmp->GetName() << " = " << OpcodeToString(cmp->GetOpcode())
+               << " " << CmpOpToString(cmp->GetCmpOp()) << " "
+               << TypeToString(*cmp->GetLhs()->GetType()) << " "
+               << ValueToString(cmp->GetLhs()) << ", "
+               << ValueToString(cmp->GetRhs()) << "\n";
+            break;
+          }
           case Opcode::Alloca: {
             auto* alloca = static_cast<const AllocaInst*>(inst);
-            os << "  " << alloca->GetName() << " = alloca i32\n";
+            if (alloca->IsArray()) {
+              os << "  " << alloca->GetName() << " = alloca i32, i32 "
+                 << alloca->GetCount() << "\n";
+            } else {
+              os << "  " << alloca->GetName() << " = alloca i32\n";
+            }
             break;
           }
           case Opcode::Load: {
@@ -91,10 +181,64 @@ void IRPrinter::Print(const Module& module, std::ostream& os) {
                << ", i32* " << ValueToString(store->GetPtr()) << "\n";
             break;
           }
+          case Opcode::Br: {
+            auto* br = static_cast<const BranchInst*>(inst);
+            os << "  br label %" << br->GetTarget()->GetName() << "\n";
+            break;
+          }
+          case Opcode::CondBr: {
+            auto* cbr = static_cast<const CondBranchInst*>(inst);
+            os << "  br i1 " << ValueToString(cbr->GetCond()) << ", label %"
+               << cbr->GetTrueBlock()->GetName() << ", label %"
+               << cbr->GetFalseBlock()->GetName() << "\n";
+            break;
+          }
+          case Opcode::Call: {
+            auto* call = static_cast<const CallInst*>(inst);
+            if (!call->GetType()->IsVoid()) {
+              os << "  " << call->GetName() << " = ";
+            } else {
+              os << "  ";
+            }
+            os << "call " << TypeToString(*call->GetType()) << " @"
+               << call->GetCallee()->GetName() << "(";
+            for (size_t i = 0; i < call->GetNumArgs(); ++i) {
+              if (i != 0) {
+                os << ", ";
+              }
+              auto* arg = call->GetArg(i);
+              os << TypeToString(*arg->GetType()) << " " << ValueToString(arg);
+            }
+            os << ")\n";
+            break;
+          }
+          case Opcode::Gep: {
+            auto* gep = static_cast<const GepInst*>(inst);
+            auto* base = gep->GetBase();
+            // 全局数组用双下标 GEP，局部 alloca 用平坦 GEP。
+            if (auto* gv = dynamic_cast<const GlobalVariable*>(base)) {
+              if (gv->IsArray()) {
+                os << "  " << gep->GetName()
+                   << " = getelementptr [" << gv->GetCount() << " x i32], ["
+                   << gv->GetCount() << " x i32]* @" << gv->GetName()
+                   << ", i32 0, i32 " << ValueToString(gep->GetIndex()) << "\n";
+                break;
+              }
+            }
+            os << "  " << gep->GetName()
+               << " = getelementptr i32, i32* " << ValueToString(base)
+               << ", i32 " << ValueToString(gep->GetIndex()) << "\n";
+            break;
+          }
           case Opcode::Ret: {
             auto* ret = static_cast<const ReturnInst*>(inst);
-            os << "  ret " << TypeToString(*ret->GetValue()->GetType()) << " "
+            auto* retval = ret->GetValue();
-               << ValueToString(ret->GetValue()) << "\n";
+            if (!retval) {
+              os << "  ret void\n";
+            } else {
+              os << "  ret " << TypeToString(*retval->GetType()) << " "
+                 << ValueToString(retval) << "\n";
+            }
             break;
           }
         }

src/ir/Instruction.cpp

@@ -3,11 +3,30 @@
 // - 指令操作数与结果类型管理，支持打印与优化
 #include "ir/IR.h"
 
+#include <algorithm>
 #include <stdexcept>
+#include <utility>
 
 #include "utils/Log.h"
 
 namespace ir {
+
+namespace {
+
+const char* TypeKindToString(Type::Kind k) {
+  switch (k) {
+    case Type::Kind::Void:
+      return "void";
+    case Type::Kind::Int32:
+      return "i32";
+    case Type::Kind::PtrInt32:
+      return "i32*";
+  }
+  return "?";
+}
+
+}  // namespace
+
 User::User(std::shared_ptr<Type> ty, std::string name)
     : Value(std::move(ty), std::move(name)) {}
 
@@ -52,17 +71,44 @@ Instruction::Instruction(Opcode op, std::shared_ptr<Type> ty, std::string name)
 
 Opcode Instruction::GetOpcode() const { return opcode_; }
 
-bool Instruction::IsTerminator() const { return opcode_ == Opcode::Ret; }
+bool Instruction::IsTerminator() const {
+  return opcode_ == Opcode::Ret || opcode_ == Opcode::Br ||
+         opcode_ == Opcode::CondBr;
+}
 
 BasicBlock* Instruction::GetParent() const { return parent_; }
 
-void Instruction::SetParent(BasicBlock* parent) { parent_ = parent; }
+void Instruction::SetParent(BasicBlock* parent) {
+  parent_ = parent;
+  if (!parent_) {
+    return;
+  }
+  if (auto* br = dynamic_cast<BranchInst*>(this)) {
+    auto* target = br->GetTarget();
+    parent_->AddSuccessor(target);
+    target->AddPredecessor(parent_);
+    return;
+  }
+  if (auto* cbr = dynamic_cast<CondBranchInst*>(this)) {
+    auto* true_bb = cbr->GetTrueBlock();
+    auto* false_bb = cbr->GetFalseBlock();
+    parent_->AddSuccessor(true_bb);
+    true_bb->AddPredecessor(parent_);
+    parent_->AddSuccessor(false_bb);
+    false_bb->AddPredecessor(parent_);
+  }
+}
+
+static bool IsBinaryOpcode(Opcode op) {
+  return op == Opcode::Add || op == Opcode::Sub || op == Opcode::Mul ||
+         op == Opcode::Div || op == Opcode::Mod;
+}
 
 BinaryInst::BinaryInst(Opcode op, std::shared_ptr<Type> ty, Value* lhs,
                        Value* rhs, std::string name)
     : Instruction(op, std::move(ty), std::move(name)) {
-  if (op != Opcode::Add) {
+  if (!IsBinaryOpcode(op)) {
-    throw std::runtime_error(FormatError("ir", "BinaryInst 当前只支持 Add"));
+    throw std::runtime_error(FormatError("ir", "BinaryInst 非法二元操作码"));
   }
   if (!lhs || !rhs) {
     throw std::runtime_error(FormatError("ir", "BinaryInst 缺少操作数"));
@@ -85,24 +131,64 @@ Value* BinaryInst::GetLhs() const { return GetOperand(0); }
 
 Value* BinaryInst::GetRhs() const { return GetOperand(1); }
 
+CmpInst::CmpInst(CmpOp op, std::shared_ptr<Type> ty, Value* lhs, Value* rhs,
+                 std::string name)
+    : Instruction(Opcode::Cmp, std::move(ty), std::move(name)), cmp_op_(op) {
+  if (!lhs || !rhs) {
+    throw std::runtime_error(FormatError("ir", "CmpInst 缺少操作数"));
+  }
+  if (!type_ || !lhs->GetType() || !rhs->GetType()) {
+    throw std::runtime_error(FormatError("ir", "CmpInst 缺少类型信息"));
+  }
+  if (!type_->IsInt32()) {
+    throw std::runtime_error(FormatError("ir", "CmpInst 结果类型必须为 i32"));
+  }
+  if (!lhs->GetType()->IsInt32() || !rhs->GetType()->IsInt32()) {
+    throw std::runtime_error(FormatError(
+        "ir", "CmpInst 当前只支持 i32 比较，实际为 " +
+                   std::string(TypeKindToString(lhs->GetType()->GetKind())) +
+                   " 与 " +
+                   std::string(TypeKindToString(rhs->GetType()->GetKind()))));
+  }
+  AddOperand(lhs);
+  AddOperand(rhs);
+}
+
+CmpOp CmpInst::GetCmpOp() const { return cmp_op_; }
+
+Value* CmpInst::GetLhs() const { return GetOperand(0); }
+
+Value* CmpInst::GetRhs() const { return GetOperand(1); }
+
 ReturnInst::ReturnInst(std::shared_ptr<Type> void_ty, Value* val)
     : Instruction(Opcode::Ret, std::move(void_ty), "") {
-  if (!val) {
-    throw std::runtime_error(FormatError("ir", "ReturnInst 缺少返回值"));
-  }
   if (!type_ || !type_->IsVoid()) {
     throw std::runtime_error(FormatError("ir", "ReturnInst 返回类型必须为 void"));
   }
-  AddOperand(val);
+  if (val) {
+    AddOperand(val);
+  }
 }
 
-Value* ReturnInst::GetValue() const { return GetOperand(0); }
+Value* ReturnInst::GetValue() const {
+  return GetNumOperands() > 0 ? GetOperand(0) : nullptr;
+}
 
 AllocaInst::AllocaInst(std::shared_ptr<Type> ptr_ty, std::string name)
-    : Instruction(Opcode::Alloca, std::move(ptr_ty), std::move(name)) {
+    : Instruction(Opcode::Alloca, std::move(ptr_ty), std::move(name)), count_(1) {
+  if (!type_ || !type_->IsPtrInt32()) {
+    throw std::runtime_error(FormatError("ir", "AllocaInst 当前只支持 i32*"));
+  }
+}
+
+AllocaInst::AllocaInst(std::shared_ptr<Type> ptr_ty, std::string name, int count)
+    : Instruction(Opcode::Alloca, std::move(ptr_ty), std::move(name)), count_(count) {
   if (!type_ || !type_->IsPtrInt32()) {
     throw std::runtime_error(FormatError("ir", "AllocaInst 当前只支持 i32*"));
   }
+  if (count_ <= 0) {
+    throw std::runtime_error(FormatError("ir", "AllocaInst 数组大小必须为正数"));
+  }
 }
 
 LoadInst::LoadInst(std::shared_ptr<Type> val_ty, Value* ptr, std::string name)
@@ -148,4 +234,106 @@ Value* StoreInst::GetValue() const { return GetOperand(0); }
 
 Value* StoreInst::GetPtr() const { return GetOperand(1); }
 
+BranchInst::BranchInst(std::shared_ptr<Type> void_ty, BasicBlock* target)
+    : Instruction(Opcode::Br, std::move(void_ty), "") {
+  if (!target) {
+    throw std::runtime_error(FormatError("ir", "BranchInst 缺少目标块"));
+  }
+  if (!type_ || !type_->IsVoid()) {
+    throw std::runtime_error(FormatError("ir", "BranchInst 返回类型必须为 void"));
+  }
+  AddOperand(target);
+}
+
+BasicBlock* BranchInst::GetTarget() const {
+  return static_cast<BasicBlock*>(GetOperand(0));
+}
+
+CondBranchInst::CondBranchInst(std::shared_ptr<Type> void_ty, Value* cond,
+                               BasicBlock* true_bb, BasicBlock* false_bb)
+    : Instruction(Opcode::CondBr, std::move(void_ty), "") {
+  if (!cond || !true_bb || !false_bb) {
+    throw std::runtime_error(FormatError("ir", "CondBranchInst 参数不完整"));
+  }
+  if (!type_ || !type_->IsVoid()) {
+    throw std::runtime_error(
+        FormatError("ir", "CondBranchInst 返回类型必须为 void"));
+  }
+  if (!cond->GetType() || !cond->GetType()->IsInt32()) {
+    throw std::runtime_error(FormatError("ir", "CondBranchInst 条件必须为 i32"));
+  }
+  AddOperand(cond);
+  AddOperand(true_bb);
+  AddOperand(false_bb);
+}
+
+Value* CondBranchInst::GetCond() const { return GetOperand(0); }
+
+BasicBlock* CondBranchInst::GetTrueBlock() const {
+  return static_cast<BasicBlock*>(GetOperand(1));
+}
+
+BasicBlock* CondBranchInst::GetFalseBlock() const {
+  return static_cast<BasicBlock*>(GetOperand(2));
+}
+
+CallInst::CallInst(std::shared_ptr<Type> ret_ty, Function* callee,
+                   std::vector<Value*> args, std::string name)
+    : Instruction(Opcode::Call, std::move(ret_ty), std::move(name)) {
+  if (!callee) {
+    throw std::runtime_error(FormatError("ir", "CallInst 缺少被调函数"));
+  }
+  const auto& param_types = callee->GetParamTypes();
+  if (args.size() != param_types.size()) {
+    throw std::runtime_error(FormatError("ir", "CallInst 参数个数不匹配"));
+  }
+  if (!type_ || !callee->GetType() || type_->GetKind() != callee->GetType()->GetKind()) {
+    throw std::runtime_error(FormatError("ir", "CallInst 返回类型与函数签名不匹配"));
+  }
+
+  AddOperand(callee);
+  for (size_t i = 0; i < args.size(); ++i) {
+    auto* arg = args[i];
+    if (!arg || !arg->GetType()) {
+      throw std::runtime_error(FormatError("ir", "CallInst 存在非法参数"));
+    }
+    if (!param_types[i] || arg->GetType()->GetKind() != param_types[i]->GetKind()) {
+      throw std::runtime_error(FormatError("ir", "CallInst 参数类型不匹配"));
+    }
+    AddOperand(arg);
+  }
+}
+
+Function* CallInst::GetCallee() const {
+  return static_cast<Function*>(GetOperand(0));
+}
+
+size_t CallInst::GetNumArgs() const { return GetNumOperands() - 1; }
+
+Value* CallInst::GetArg(size_t index) const {
+  if (index >= GetNumArgs()) {
+    throw std::out_of_range("CallInst arg index out of range");
+  }
+  return GetOperand(index + 1);
+}
+
+GepInst::GepInst(std::shared_ptr<Type> ptr_ty, Value* base, Value* index,
+                 std::string name)
+    : Instruction(Opcode::Gep, std::move(ptr_ty), std::move(name)) {
+  if (!base || !index) {
+    throw std::runtime_error(FormatError("ir", "GepInst 缺少操作数"));
+  }
+  if (!base->GetType() || !base->GetType()->IsPtrInt32()) {
+    throw std::runtime_error(FormatError("ir", "GepInst base 必须为 i32*"));
+  }
+  if (!index->GetType() || !index->GetType()->IsInt32()) {
+    throw std::runtime_error(FormatError("ir", "GepInst index 必须为 i32"));
+  }
+  AddOperand(base);
+  AddOperand(index);
+}
+
+Value* GepInst::GetBase() const { return GetOperand(0); }
+Value* GepInst::GetIndex() const { return GetOperand(1); }
+
 }  // namespace ir

src/ir/Module.cpp

@@ -9,8 +9,10 @@ Context& Module::GetContext() { return context_; }
 const Context& Module::GetContext() const { return context_; }
 
 Function* Module::CreateFunction(const std::string& name,
-                                 std::shared_ptr<Type> ret_type) {
+                                 std::shared_ptr<Type> ret_type,
-  functions_.push_back(std::make_unique<Function>(name, std::move(ret_type)));
+                                 std::vector<std::shared_ptr<Type>> param_types) {
+  functions_.push_back(std::make_unique<Function>(
+      name, std::move(ret_type), std::move(param_types)));
   return functions_.back().get();
 }
 
@@ -18,4 +20,27 @@ const std::vector<std::unique_ptr<Function>>& Module::GetFunctions() const {
   return functions_;
 }
 
+Function* Module::FindFunction(const std::string& name) const {
+  for (const auto& f : functions_) {
+    if (f && f->GetName() == name) return f.get();
+  }
+  return nullptr;
+}
+
+GlobalVariable* Module::CreateGlobalVar(const std::string& name, int init_val, int count) {
+  global_vars_.push_back(std::make_unique<GlobalVariable>(name, init_val, count));
+  return global_vars_.back().get();
+}
+
+GlobalVariable* Module::FindGlobalVar(const std::string& name) const {
+  for (const auto& gv : global_vars_) {
+    if (gv && gv->GetName() == name) return gv.get();
+  }
+  return nullptr;
+}
+
+const std::vector<std::unique_ptr<GlobalVariable>>& Module::GetGlobalVars() const {
+  return global_vars_;
+}
+
 }  // namespace ir

src/irgen/CMakeLists.txt

@@ -4,6 +4,7 @@ add_library(irgen STATIC
   IRGenStmt.cpp
   IRGenExp.cpp
   IRGenDecl.cpp
+  IRGenConstEval.cpp
 )
 
 target_link_libraries(irgen PUBLIC

src/irgen/IRGenConstEval.cpp

@@ -0,0 +1,95 @@
+#include "irgen/IRGen.h"
+
+#include <stdexcept>
+#include <string>
+
+#include "SysYParser.h"
+#include "utils/Log.h"
+
+// 内部辅助：不依赖类成员，只需 ConstEnv。
+namespace {
+
+int EvalAddExp(SysYParser::AddExpContext* ctx,
+               const IRGenImpl::ConstEnv& env);
+int EvalMulExp(SysYParser::MulExpContext* ctx,
+               const IRGenImpl::ConstEnv& env);
+int EvalUnaryExp(SysYParser::UnaryExpContext* ctx,
+                 const IRGenImpl::ConstEnv& env);
+
+int EvalPrimary(SysYParser::PrimaryExpContext* ctx,
+                const IRGenImpl::ConstEnv& env) {
+  if (!ctx) throw std::runtime_error(FormatError("consteval", "空主表达式"));
+  if (ctx->number()) {
+    if (!ctx->number()->ILITERAL())
+      throw std::runtime_error(
+          FormatError("consteval", "constExp 不支持浮点字面量"));
+    return std::stoi(ctx->number()->getText());
+  }
+  if (ctx->exp()) return EvalAddExp(ctx->exp()->addExp(), env);
+  if (ctx->lValue()) {
+    if (!ctx->lValue()->ID())
+      throw std::runtime_error(FormatError("consteval", "非法 lValue"));
+    const std::string name = ctx->lValue()->ID()->getText();
+    auto it = env.find(name);
+    if (it == env.end())
+      throw std::runtime_error(
+          FormatError("consteval", "constExp 引用非 const 变量: " + name));
+    return it->second;
+  }
+  throw std::runtime_error(FormatError("consteval", "不支持的主表达式形式"));
+}
+
+int EvalUnaryExp(SysYParser::UnaryExpContext* ctx,
+                 const IRGenImpl::ConstEnv& env) {
+  if (!ctx) throw std::runtime_error(FormatError("consteval", "空一元表达式"));
+  if (ctx->primaryExp()) return EvalPrimary(ctx->primaryExp(), env);
+  if (ctx->unaryOp() && ctx->unaryExp()) {
+    int v = EvalUnaryExp(ctx->unaryExp(), env);
+    if (ctx->unaryOp()->SUB()) return -v;
+    if (ctx->unaryOp()->ADD()) return v;
+    if (ctx->unaryOp()->NOT()) return (v == 0) ? 1 : 0;
+  }
+  throw std::runtime_error(
+      FormatError("consteval", "函数调用不能出现在 constExp 中"));
+}
+
+int EvalMulExp(SysYParser::MulExpContext* ctx,
+               const IRGenImpl::ConstEnv& env) {
+  if (!ctx) throw std::runtime_error(FormatError("consteval", "空乘法表达式"));
+  if (ctx->mulExp()) {
+    int lhs = EvalMulExp(ctx->mulExp(), env);
+    int rhs = EvalUnaryExp(ctx->unaryExp(), env);
+    if (ctx->MUL()) return lhs * rhs;
+    if (ctx->DIV()) { if (!rhs) throw std::runtime_error("除以零"); return lhs / rhs; }
+    if (ctx->MOD()) { if (!rhs) throw std::runtime_error("模零"); return lhs % rhs; }
+    throw std::runtime_error(FormatError("consteval", "未知乘法运算符"));
+  }
+  return EvalUnaryExp(ctx->unaryExp(), env);
+}
+
+int EvalAddExp(SysYParser::AddExpContext* ctx,
+               const IRGenImpl::ConstEnv& env) {
+  if (!ctx) throw std::runtime_error(FormatError("consteval", "空加法表达式"));
+  if (ctx->addExp()) {
+    int lhs = EvalAddExp(ctx->addExp(), env);
+    int rhs = EvalMulExp(ctx->mulExp(), env);
+    if (ctx->ADD()) return lhs + rhs;
+    if (ctx->SUB()) return lhs - rhs;
+    throw std::runtime_error(FormatError("consteval", "未知加法运算符"));
+  }
+  return EvalMulExp(ctx->mulExp(), env);
+}
+
+}  // namespace
+
+int IRGenImpl::EvalConstExpr(SysYParser::ConstExpContext* ctx) const {
+  if (!ctx || !ctx->addExp())
+    throw std::runtime_error(FormatError("consteval", "空 constExp"));
+  return EvalAddExp(ctx->addExp(), const_env_);
+}
+
+int IRGenImpl::EvalExpAsConst(SysYParser::ExpContext* ctx) const {
+  if (!ctx || !ctx->addExp())
+    throw std::runtime_error(FormatError("consteval", "空 exp"));
+  return EvalAddExp(ctx->addExp(), const_env_);
+}

src/irgen/IRGenDecl.cpp

@@ -6,17 +6,6 @@
 #include "ir/IR.h"
 #include "utils/Log.h"
 
-namespace {
-
-std::string GetLValueName(SysYParser::LValueContext& lvalue) {
-  if (!lvalue.ID()) {
-    throw std::runtime_error(FormatError("irgen", "非法左值"));
-  }
-  return lvalue.ID()->getText();
-}
-
-}  // namespace
-
 std::any IRGenImpl::visitBlockStmt(SysYParser::BlockStmtContext* ctx) {
   if (!ctx) {
     throw std::runtime_error(FormatError("irgen", "缺少语句块"));
@@ -24,7 +13,6 @@ std::any IRGenImpl::visitBlockStmt(SysYParser::BlockStmtContext* ctx) {
   for (auto* item : ctx->blockItem()) {
     if (item) {
       if (VisitBlockItemResult(*item) == BlockFlow::Terminated) {
-        // 当前语法要求 return 为块内最后一条语句；命中后可停止生成。
         break;
       }
     }
@@ -51,52 +39,267 @@ std::any IRGenImpl::visitBlockItem(SysYParser::BlockItemContext* ctx) {
   throw std::runtime_error(FormatError("irgen", "暂不支持的语句或声明"));
 }
 
-// 变量声明的 IR 生成目前也是最小实现：
-// - 先检查声明的基础类型，当前仅支持局部 int；
-// - 再把 Decl 中的变量定义交给 visitVarDef 继续处理。
-//
-// 和更完整的版本相比，这里还没有：
-// - 一个 Decl 中多个变量定义的顺序处理；
-// - const、数组、全局变量等不同声明形态；
-// - 更丰富的类型系统。
 std::any IRGenImpl::visitDecl(SysYParser::DeclContext* ctx) {
   if (!ctx) {
     throw std::runtime_error(FormatError("irgen", "缺少变量声明"));
   }
+  if (ctx->constDecl()) {
+    return ctx->constDecl()->accept(this);
+  }
+  if (ctx->varDecl()) {
+    return ctx->varDecl()->accept(this);
+  }
+  return {};
+}
+
+// ─── 工具：扁平化 constInitValue ──────────────────────────────────────────
+// 将嵌套的 const 初始化列表展开为长度 total 的整数数组。
+// 遵循 C99 数组初始化规则：
+//   - 标量直接填一格
+//   - 大括号子列表对齐到 sub_size 边界，填满后补零
+
+void IRGenImpl::FlattenConstInit(SysYParser::ConstInitValueContext* ctx,
+                                  const std::vector<int>& dims, int dim_idx,
+                                  std::vector<int>& out, int& pos) {
+  if (!ctx) return;
+
+  if (ctx->constExp()) {
+    // 标量叶节点
+    out[pos++] = EvalConstExpr(ctx->constExp());
+    return;
+  }
+
+  // 大括号列表
+  int sub_size = 1;
+  for (int i = dim_idx + 1; i < (int)dims.size(); i++) sub_size *= dims[i];
+  int agg_size = (dim_idx < (int)dims.size()) ? dims[dim_idx] * sub_size : 1;
+  int start = pos;
+
+  for (auto* item : ctx->constInitValue()) {
+    if (!item || pos >= start + agg_size) break;
+    if (item->constExp()) {
+      // 标量：直接填当前位置
+      out[pos++] = EvalConstExpr(item->constExp());
+    } else {
+      // 嵌套大括号：对齐到 sub_size 边界
+      if (sub_size > 1) {
+        int offset = pos - start;
+        int rem = offset % sub_size;
+        if (rem != 0) pos += sub_size - rem;
+      }
+      int sub_start = pos;
+      FlattenConstInit(item, dims, dim_idx + 1, out, pos);
+      // 补零到子聚合末尾
+      int sub_end = sub_start + sub_size;
+      while (pos < sub_end && pos < start + agg_size) out[pos++] = 0;
+    }
+  }
+  // 剩余补零
+  while (pos < start + agg_size) out[pos++] = 0;
+}
+
+// ─── 工具：扁平化 initValue ───────────────────────────────────────────────
+void IRGenImpl::FlattenInit(SysYParser::InitValueContext* ctx,
+                             const std::vector<int>& dims, int dim_idx,
+                             std::vector<ir::Value*>& out, int& pos) {
+  if (!ctx) return;
+
+  if (ctx->exp()) {
+    out[pos++] = EvalExpr(*ctx->exp());
+    return;
+  }
+
+  int sub_size = 1;
+  for (int i = dim_idx + 1; i < (int)dims.size(); i++) sub_size *= dims[i];
+  int agg_size = (dim_idx < (int)dims.size()) ? dims[dim_idx] * sub_size : 1;
+  int start = pos;
+
+  for (auto* item : ctx->initValue()) {
+    if (!item || pos >= start + agg_size) break;
+    if (item->exp()) {
+      out[pos++] = EvalExpr(*item->exp());
+    } else {
+      if (sub_size > 1) {
+        int offset = pos - start;
+        int rem = offset % sub_size;
+        if (rem != 0) pos += sub_size - rem;  // zeros already in out
+      }
+      int sub_start = pos;
+      FlattenInit(item, dims, dim_idx + 1, out, pos);
+      int sub_end = sub_start + sub_size;
+      while (pos < sub_end && pos < start + agg_size) pos++;  // zeros
+    }
+  }
+  while (pos < start + agg_size) pos++;  // zeros
+}
+
+// ─── const 声明 ───────────────────────────────────────────────────────────
+
+std::any IRGenImpl::visitConstDecl(SysYParser::ConstDeclContext* ctx) {
+  if (!ctx) return {};
   if (!ctx->btype() || !ctx->btype()->INT()) {
-    throw std::runtime_error(FormatError("irgen", "当前仅支持局部 int 变量声明"));
+    throw std::runtime_error(FormatError("irgen", "当前仅支持 int const 声明"));
   }
-  auto* var_def = ctx->varDef();
+  for (auto* def : ctx->constDef()) {
-  if (!var_def) {
+    if (def) def->accept(this);
-    throw std::runtime_error(FormatError("irgen", "非法变量声明"));
   }
-  var_def->accept(this);
   return {};
 }
 
+std::any IRGenImpl::visitConstDef(SysYParser::ConstDefContext* ctx) {
+  if (!ctx || !ctx->ID()) return {};
+  const std::string name = ctx->ID()->getText();
 
-// 当前仍是教学用的最小版本，因此这里只支持：
+  // ── 标量 const ────────────────────────────────────────────────────────
-// - 局部 int 变量；
+  if (ctx->LBRACK().empty()) {
-// - 标量初始化；
+    if (!ctx->constInitValue() || !ctx->constInitValue()->constExp()) {
-// - 一个 VarDef 对应一个槽位。
+      throw std::runtime_error(FormatError("irgen", "const 标量声明缺少初始值"));
-std::any IRGenImpl::visitVarDef(SysYParser::VarDefContext* ctx) {
+    }
+    int ival = EvalConstExpr(ctx->constInitValue()->constExp());
+    const_env_[name] = ival;  // 存入编译期环境
+
+    if (IsGlobalScope()) {
+      auto* gv = module_.CreateGlobalVar(name, ival);
+      global_storage_[name] = gv;
+    } else {
+      auto* slot = CreateEntryAllocaI32(module_.GetContext().NextTemp());
+      named_storage_[name] = slot;
+      builder_.CreateStore(builder_.CreateConstInt(ival), slot);
+    }
+    return {};
+  }
+
+  // ── 数组 const ────────────────────────────────────────────────────────
+  std::vector<int> dims;
+  for (auto* ce : ctx->constExp()) {
+    dims.push_back(EvalConstExpr(ce));
+  }
+  int total = 1;
+  for (int d : dims) total *= d;
+
+  // 扁平化初始化值
+  std::vector<int> flat(total, 0);
+  if (ctx->constInitValue()) {
+    int pos = 0;
+    FlattenConstInit(ctx->constInitValue(), dims, 0, flat, pos);
+  }
+
+  if (IsGlobalScope()) {
+    // 全局 const 数组：创建全局数组变量（仅支持零初始化；非零初始化暂用零）
+    // TODO: 支持全局 const 数组的非零初始化
+    auto* gv = module_.CreateGlobalVar(name, 0, total);
+    global_storage_[name] = gv;
+    global_array_dims_[name] = dims;
+  } else {
+    // 局部 const 数组：alloca + 逐元素 store
+    auto* slot = CreateEntryAllocaArray(total, module_.GetContext().NextTemp());
+    named_storage_[name] = slot;
+    local_array_dims_[name] = dims;
+    for (int i = 0; i < total; i++) {
+      auto* idx = builder_.CreateConstInt(i);
+      auto* ptr = builder_.CreateGep(slot, idx, module_.GetContext().NextTemp());
+      builder_.CreateStore(builder_.CreateConstInt(flat[i]), ptr);
+    }
+  }
+  return {};
+}
+
+// ─── var 声明 ─────────────────────────────────────────────────────────────
+
+std::any IRGenImpl::visitVarDecl(SysYParser::VarDeclContext* ctx) {
   if (!ctx) {
-    throw std::runtime_error(FormatError("irgen", "缺少变量定义"));
+    throw std::runtime_error(FormatError("irgen", "缺少变量声明"));
+  }
+  if (!ctx->btype() || !ctx->btype()->INT()) {
+    throw std::runtime_error(FormatError("irgen", "当前仅支持 int 变量声明"));
+  }
+  for (auto* var_def : ctx->varDef()) {
+    if (!var_def) {
+      throw std::runtime_error(FormatError("irgen", "非法变量声明"));
+    }
+    var_def->accept(this);
   }
-  if (!ctx->lValue()) {
+  return {};
-    throw std::runtime_error(FormatError("irgen", "变量声明缺少名称"));
+}
+
+std::any IRGenImpl::visitVarDef(SysYParser::VarDefContext* ctx) {
+  if (!ctx || !ctx->ID()) {
+    throw std::runtime_error(FormatError("irgen", "变量定义缺少名称"));
   }
-  GetLValueName(*ctx->lValue());
+  const std::string name = ctx->ID()->getText();
+
+  // ── 数组变量 ──────────────────────────────────────────────────────────
+  if (!ctx->LBRACK().empty()) {
+    std::vector<int> dims;
+    for (auto* ce : ctx->constExp()) {
+      dims.push_back(EvalConstExpr(ce));
+    }
+    int total = 1;
+    for (int d : dims) total *= d;
+
+    if (IsGlobalScope()) {
+      auto* gv = module_.CreateGlobalVar(name, 0, total);
+      storage_map_[ctx] = gv;
+      global_storage_[name] = gv;
+      global_array_dims_[name] = dims;
+      // 全局数组：不支持运行时初始化（全零已足够）
+    } else {
+      auto* slot = CreateEntryAllocaArray(total, module_.GetContext().NextTemp());
+      storage_map_[ctx] = slot;
+      named_storage_[name] = slot;
+      local_array_dims_[name] = dims;
+
+      // 先零初始化
+      for (int i = 0; i < total; i++) {
+        auto* idx = builder_.CreateConstInt(i);
+        auto* ptr = builder_.CreateGep(slot, idx, module_.GetContext().NextTemp());
+        builder_.CreateStore(builder_.CreateConstInt(0), ptr);
+      }
+      // 如果有初始化列表，覆盖零
+      if (auto* init_val = ctx->initValue()) {
+        std::vector<ir::Value*> flat(total, nullptr);
+        int pos = 0;
+        FlattenInit(init_val, dims, 0, flat, pos);
+        for (int i = 0; i < total; i++) {
+          if (flat[i] != nullptr) {
+            auto* idx = builder_.CreateConstInt(i);
+            auto* ptr = builder_.CreateGep(slot, idx, module_.GetContext().NextTemp());
+            builder_.CreateStore(flat[i], ptr);
+          }
+        }
+      }
+    }
+    return {};
+  }
+
+  // ── 标量变量 ──────────────────────────────────────────────────────────
+  if (IsGlobalScope()) {
+    int ival = 0;
+    if (auto* init_value = ctx->initValue()) {
+      if (!init_value->exp()) {
+        throw std::runtime_error(
+            FormatError("irgen", "全局标量变量仅支持表达式初始化"));
+      }
+      ival = EvalExpAsConst(init_value->exp());
+    }
+    auto* gv = module_.CreateGlobalVar(name, ival);
+    storage_map_[ctx] = gv;
+    global_storage_[name] = gv;
+    return {};
+  }
+
+  // 局部标量
   if (storage_map_.find(ctx) != storage_map_.end()) {
     throw std::runtime_error(FormatError("irgen", "声明重复生成存储槽位"));
   }
-  auto* slot = builder_.CreateAllocaI32(module_.GetContext().NextTemp());
+  auto* slot = CreateEntryAllocaI32(module_.GetContext().NextTemp());
   storage_map_[ctx] = slot;
+  named_storage_[name] = slot;
 
   ir::Value* init = nullptr;
   if (auto* init_value = ctx->initValue()) {
     if (!init_value->exp()) {
-      throw std::runtime_error(FormatError("irgen", "当前不支持聚合初始化"));
+      throw std::runtime_error(FormatError("irgen", "当前不支持聚合初始化到标量"));
     }
     init = EvalExpr(*init_value->exp());
   } else {

src/irgen/IRGenExp.cpp

@@ -6,75 +6,457 @@
 #include "ir/IR.h"
 #include "utils/Log.h"
 
-// 表达式生成当前也只实现了很小的一个子集。
-// 目前支持：
-// - 整数字面量
-// - 普通局部变量读取
-// - 括号表达式
-// - 二元加法
-//
-// 还未支持：
-// - 减乘除与一元运算
-// - 赋值表达式
-// - 函数调用
-// - 数组、指针、下标访问
-// - 条件与比较表达式
-// - ...
 ir::Value* IRGenImpl::EvalExpr(SysYParser::ExpContext& expr) {
   return std::any_cast<ir::Value*>(expr.accept(this));
 }
 
+ir::Value* IRGenImpl::EvalCond(SysYParser::CondContext& cond) {
+  return std::any_cast<ir::Value*>(cond.accept(this));
+}
+
+ir::Value* IRGenImpl::ToBoolValue(ir::Value* v) {
+  if (!v) {
+    throw std::runtime_error(FormatError("irgen", "条件值为空"));
+  }
+  if (v->GetType() && v->GetType()->IsPtrInt32()) {
+    // SysY 中数组名退化得到的指针在当前实现里总是非空。
+    return builder_.CreateConstInt(1);
+  }
+  if (dynamic_cast<ir::CmpInst*>(v) != nullptr) {
+    return v;
+  }
+  auto* zero = builder_.CreateConstInt(0);
+  return builder_.CreateCmp(ir::CmpOp::Ne, v, zero, module_.GetContext().NextTemp());
+}
+
+std::string IRGenImpl::NextBlockName() {
+  std::string temp = module_.GetContext().NextTemp();
+  if (!temp.empty() && temp.front() == '%') {
+    return "bb" + temp.substr(1);
+  }
+  return "bb" + temp;
+}
+
+// ─── 数组维度查找 ────────────────────────────────────────────────────────
+const std::vector<int>* IRGenImpl::FindArrayDims(const std::string& name) const {
+  auto it = local_array_dims_.find(name);
+  if (it != local_array_dims_.end()) return &it->second;
+  // 局部同名标量（含形参/局部变量）应屏蔽全局数组维度信息。
+  if (named_storage_.find(name) != named_storage_.end()) return nullptr;
+  auto git = global_array_dims_.find(name);
+  if (git != global_array_dims_.end()) return &git->second;
+  return nullptr;
+}
 
-std::any IRGenImpl::visitParenExp(SysYParser::ParenExpContext* ctx) {
+// ─── 线性下标计算 ────────────────────────────────────────────────────────
-  if (!ctx || !ctx->exp()) {
+// 给定维度 dims 和下标表达式列表，计算 linear = sum(subs[k] * stride[k])。
-    throw std::runtime_error(FormatError("irgen", "非法括号表达式"));
+ir::Value* IRGenImpl::ComputeLinearIndex(
+    const std::vector<int>& dims,
+    const std::vector<SysYParser::ExpContext*>& subs) {
+  // 对于 dims=[d0,d1,...,dn-1]，stride[k] = d_{k+1} * ... * d_{n-1}
+  // 允许 dims[0] == -1（数组参数首维未知）
+  ir::Value* linear = builder_.CreateConstInt(0);
+  for (int k = 0; k < (int)subs.size() && k < (int)dims.size(); k++) {
+    int stride = 1;
+    for (int j = k + 1; j < (int)dims.size(); j++) stride *= dims[j];
+
+    ir::Value* idx = EvalExpr(*subs[k]);
+    if (stride != 1) {
+      auto* sv = builder_.CreateConstInt(stride);
+      idx = builder_.CreateMul(idx, sv, module_.GetContext().NextTemp());
+    }
+    linear = (stride == 1 && k == (int)subs.size() - 1 &&
+              dynamic_cast<ir::ConstantInt*>(linear) &&
+              static_cast<ir::ConstantInt*>(linear)->GetValue() == 0)
+                 ? idx
+                 : builder_.CreateAdd(linear, idx, module_.GetContext().NextTemp());
+  }
+  return linear;
+}
+
+std::any IRGenImpl::visitExp(SysYParser::ExpContext* ctx) {
+  if (!ctx || !ctx->addExp()) {
+    throw std::runtime_error(FormatError("irgen", "非法表达式"));
   }
-  return EvalExpr(*ctx->exp());
+  return ctx->addExp()->accept(this);
 }
 
+std::any IRGenImpl::visitCond(SysYParser::CondContext* ctx) {
+  if (!ctx || !ctx->lOrExp()) {
+    throw std::runtime_error(FormatError("irgen", "非法条件表达式"));
+  }
+  return ctx->lOrExp()->accept(this);
+}
 
-std::any IRGenImpl::visitNumberExp(SysYParser::NumberExpContext* ctx) {
+std::any IRGenImpl::visitPrimaryExp(SysYParser::PrimaryExpContext* ctx) {
-  if (!ctx || !ctx->number() || !ctx->number()->ILITERAL()) {
+  if (!ctx) {
+    throw std::runtime_error(FormatError("irgen", "非法基本表达式"));
+  }
+  if (ctx->exp()) {
+    return EvalExpr(*ctx->exp());
+  }
+  if (ctx->number()) {
+    return ctx->number()->accept(this);
+  }
+  if (ctx->lValue()) {
+    return ctx->lValue()->accept(this);
+  }
+  throw std::runtime_error(FormatError("irgen", "不支持的基本表达式"));
+}
+
+std::any IRGenImpl::visitNumber(SysYParser::NumberContext* ctx) {
+  if (!ctx || !ctx->ILITERAL()) {
     throw std::runtime_error(FormatError("irgen", "当前仅支持整数字面量"));
   }
-  return static_cast<ir::Value*>(
+  // 支持十六进制和八进制字面量
-      builder_.CreateConstInt(std::stoi(ctx->number()->getText())));
+  const std::string text = ctx->getText();
+  int val = 0;
+  if (text.size() >= 2 && text[0] == '0' &&
+      (text[1] == 'x' || text[1] == 'X')) {
+    val = std::stoi(text, nullptr, 16);
+  } else if (text.size() > 1 && text[0] == '0') {
+    val = std::stoi(text, nullptr, 8);
+  } else {
+    val = std::stoi(text);
+  }
+  return static_cast<ir::Value*>(builder_.CreateConstInt(val));
 }
 
-// 变量使用的处理流程：
+// ─── 变量存储槽位查找（含下标 GEP）────────────────────────────────────────
-// 1. 先通过语义分析结果把变量使用绑定回声明；
+// 返回 i32* 指针：
-// 2. 再通过 storage_map_ 找到该声明对应的栈槽位；
+//   - 无下标：直接返回 alloca/arg/globalvar 槽位
-// 3. 最后生成 load，把内存中的值读出来。
+//   - 有下标：计算线性偏移并生成 GEP 指令，返回元素指针
-//
+ir::Value* IRGenImpl::ResolveStorage(SysYParser::LValueContext* lvalue) {
-// 因此当前 IRGen 自己不再做名字查找，而是直接消费 Sema 的绑定结果。
+  if (!lvalue || !lvalue->ID()) return nullptr;
-std::any IRGenImpl::visitVarExp(SysYParser::VarExpContext* ctx) {
+  const std::string name = lvalue->ID()->getText();
-  if (!ctx || !ctx->var() || !ctx->var()->ID()) {
+
-    throw std::runtime_error(FormatError("irgen", "当前仅支持普通整型变量"));
+  // 获取基础槽位（三级查找）
+  ir::Value* base = nullptr;
+
+  // 1. sema binding（处理同名变量遮蔽）
+  auto* decl = sema_.ResolveVarUse(lvalue);
+  if (decl) {
+    auto it = storage_map_.find(decl);
+    if (it != storage_map_.end()) base = it->second;
+  }
+  if (!base) {
+    auto it = named_storage_.find(name);
+    if (it != named_storage_.end()) base = it->second;
   }
-  auto* decl = sema_.ResolveVarUse(ctx->var());
+  if (!base) {
-  if (!decl) {
+    auto git = global_storage_.find(name);
+    if (git != global_storage_.end()) base = git->second;
+  }
+
+  if (!base) return nullptr;
+
+  // 无下标：直接返回槽位
+  if (lvalue->exp().empty()) return base;
+
+  // 有下标：计算线性 GEP
+  const std::vector<int>* dims = FindArrayDims(name);
+  if (!dims) {
     throw std::runtime_error(
-        FormatError("irgen",
+        FormatError("irgen", "未找到数组维度信息: " + name));
-                    "变量使用缺少语义绑定: " + ctx->var()->ID()->getText()));
   }
-  auto it = storage_map_.find(decl);
+
-  if (it == storage_map_.end()) {
+  ir::Value* linear = ComputeLinearIndex(*dims, lvalue->exp());
+  return builder_.CreateGep(base, linear, module_.GetContext().NextTemp());
+}
+
+// ─── lValue 访问 ─────────────────────────────────────────────────────────
+std::any IRGenImpl::visitLValue(SysYParser::LValueContext* ctx) {
+  if (!ctx || !ctx->ID()) {
+    throw std::runtime_error(FormatError("irgen", "非法左值"));
+  }
+  const std::string name = ctx->ID()->getText();
+
+  if (ctx->exp().empty()) {
+    // 无下标：标量读取 或 数组基址引用
+    ir::Value* slot = ResolveStorage(ctx);
+    if (!slot) {
+      throw std::runtime_error(
+          FormatError("irgen", "变量未找到存储槽位: " + name));
+    }
+    // 如果是数组名，返回基址指针（用于传参）。
+    // 全局数组需要先退化为首元素指针，避免直接把 [N x i32]* 传给 i32* 形参。
+    if (FindArrayDims(name) != nullptr) {
+      if (auto* gv = dynamic_cast<ir::GlobalVariable*>(slot); gv && gv->IsArray()) {
+        return static_cast<ir::Value*>(
+            builder_.CreateGep(slot, builder_.CreateConstInt(0),
+                               module_.GetContext().NextTemp()));
+      }
+      return static_cast<ir::Value*>(slot);
+    }
+    // 标量：加载值
+    return static_cast<ir::Value*>(
+        builder_.CreateLoad(slot, module_.GetContext().NextTemp()));
+  }
+
+  // 有下标：GEP + load
+  ir::Value* elem_ptr = ResolveStorage(ctx);
+  if (!elem_ptr) {
     throw std::runtime_error(
-        FormatError("irgen",
+        FormatError("irgen", "数组元素指针解析失败: " + name));
-                    "变量声明缺少存储槽位: " + ctx->var()->ID()->getText()));
+  }
+  const auto* dims = FindArrayDims(name);
+  if (dims && ctx->exp().size() < dims->size()) {
+    // 如 A[i]（A 为二维数组）应退化为指针，用于实参传递。
+    return static_cast<ir::Value*>(elem_ptr);
   }
   return static_cast<ir::Value*>(
-      builder_.CreateLoad(it->second, module_.GetContext().NextTemp()));
+      builder_.CreateLoad(elem_ptr, module_.GetContext().NextTemp()));
 }
 
+std::any IRGenImpl::visitUnaryExp(SysYParser::UnaryExpContext* ctx) {
+  if (!ctx) {
+    throw std::runtime_error(FormatError("irgen", "非法一元表达式"));
+  }
+  if (ctx->primaryExp()) {
+    return ctx->primaryExp()->accept(this);
+  }
+  if (ctx->unaryOp() && ctx->unaryExp()) {
+    ir::Value* v = std::any_cast<ir::Value*>(ctx->unaryExp()->accept(this));
+    if (ctx->unaryOp()->SUB()) {
+      auto* zero = builder_.CreateConstInt(0);
+      return static_cast<ir::Value*>(builder_.CreateSub(
+          zero, v, module_.GetContext().NextTemp()));
+    }
+    if (ctx->unaryOp()->ADD()) {
+      return v;
+    }
+    if (ctx->unaryOp()->NOT()) {
+      // !v  ≡  (v == 0)
+      auto* zero = builder_.CreateConstInt(0);
+      return static_cast<ir::Value*>(builder_.CreateCmp(
+          ir::CmpOp::Eq, v, zero, module_.GetContext().NextTemp()));
+    }
+    throw std::runtime_error(FormatError("irgen", "未知一元运算符"));
+  }
+  if (ctx->ID()) {
+    // 函数调用：ID '(' funcRParams? ')'
+    const std::string callee_name = ctx->ID()->getText();
+    ir::Function* callee = module_.FindFunction(callee_name);
+    if (!callee) {
+      throw std::runtime_error(
+          FormatError("irgen", "未定义的函数: " + callee_name));
+    }
+    std::vector<ir::Value*> args;
+    if (auto* rparams = ctx->funcRParams()) {
+      for (auto* ep : rparams->exp()) {
+        args.push_back(EvalExpr(*ep));
+      }
+    }
+    const std::string name =
+        callee->GetType()->IsVoid() ? "" : module_.GetContext().NextTemp();
+    return static_cast<ir::Value*>(
+        builder_.CreateCall(callee, args, name));
+  }
+  throw std::runtime_error(FormatError("irgen", "非法一元表达式"));
+}
 
-std::any IRGenImpl::visitAdditiveExp(SysYParser::AdditiveExpContext* ctx) {
+std::any IRGenImpl::visitMulExp(SysYParser::MulExpContext* ctx) {
-  if (!ctx || !ctx->exp(0) || !ctx->exp(1)) {
+  if (!ctx) {
+    throw std::runtime_error(FormatError("irgen", "非法乘法表达式"));
+  }
+  if (ctx->mulExp()) {
+    if (!ctx->unaryExp()) {
+      throw std::runtime_error(FormatError("irgen", "非法乘法表达式"));
+    }
+    ir::Value* lhs = std::any_cast<ir::Value*>(ctx->mulExp()->accept(this));
+    ir::Value* rhs = std::any_cast<ir::Value*>(ctx->unaryExp()->accept(this));
+    if (ctx->MUL()) {
+      return static_cast<ir::Value*>(
+          builder_.CreateMul(lhs, rhs, module_.GetContext().NextTemp()));
+    }
+    if (ctx->DIV()) {
+      return static_cast<ir::Value*>(
+          builder_.CreateDiv(lhs, rhs, module_.GetContext().NextTemp()));
+    }
+    if (ctx->MOD()) {
+      return static_cast<ir::Value*>(
+          builder_.CreateMod(lhs, rhs, module_.GetContext().NextTemp()));
+    }
+    throw std::runtime_error(FormatError("irgen", "非法乘法表达式"));
+  }
+  if (ctx->unaryExp()) {
+    return ctx->unaryExp()->accept(this);
+  }
+  throw std::runtime_error(FormatError("irgen", "非法乘法表达式"));
+}
+
+std::any IRGenImpl::visitAddExp(SysYParser::AddExpContext* ctx) {
+  if (!ctx) {
     throw std::runtime_error(FormatError("irgen", "非法加法表达式"));
   }
-  ir::Value* lhs = EvalExpr(*ctx->exp(0));
+  if (ctx->addExp()) {
-  ir::Value* rhs = EvalExpr(*ctx->exp(1));
+    if (!ctx->mulExp()) {
-  return static_cast<ir::Value*>(
+      throw std::runtime_error(FormatError("irgen", "非法加法表达式"));
-      builder_.CreateBinary(ir::Opcode::Add, lhs, rhs,
+    }
-                            module_.GetContext().NextTemp()));
+    ir::Value* lhs = std::any_cast<ir::Value*>(ctx->addExp()->accept(this));
+    ir::Value* rhs = std::any_cast<ir::Value*>(ctx->mulExp()->accept(this));
+    if (ctx->ADD()) {
+      return static_cast<ir::Value*>(
+          builder_.CreateAdd(lhs, rhs, module_.GetContext().NextTemp()));
+    }
+    if (ctx->SUB()) {
+      return static_cast<ir::Value*>(
+          builder_.CreateSub(lhs, rhs, module_.GetContext().NextTemp()));
+    }
+    throw std::runtime_error(FormatError("irgen", "非法加法表达式"));
+  }
+  if (ctx->mulExp()) {
+    return ctx->mulExp()->accept(this);
+  }
+  throw std::runtime_error(FormatError("irgen", "非法加法表达式"));
+}
+
+std::any IRGenImpl::visitRelExp(SysYParser::RelExpContext* ctx) {
+  if (!ctx) {
+    throw std::runtime_error(FormatError("irgen", "非法关系表达式"));
+  }
+  if (ctx->relExp()) {
+    if (!ctx->addExp()) {
+      throw std::runtime_error(FormatError("irgen", "非法关系表达式"));
+    }
+    ir::Value* lhs = std::any_cast<ir::Value*>(ctx->relExp()->accept(this));
+    ir::Value* rhs = std::any_cast<ir::Value*>(ctx->addExp()->accept(this));
+    if (ctx->LT()) {
+      return static_cast<ir::Value*>(builder_.CreateCmp(
+          ir::CmpOp::Lt, lhs, rhs, module_.GetContext().NextTemp()));
+    }
+    if (ctx->LE()) {
+      return static_cast<ir::Value*>(builder_.CreateCmp(
+          ir::CmpOp::Le, lhs, rhs, module_.GetContext().NextTemp()));
+    }
+    if (ctx->GT()) {
+      return static_cast<ir::Value*>(builder_.CreateCmp(
+          ir::CmpOp::Gt, lhs, rhs, module_.GetContext().NextTemp()));
+    }
+    if (ctx->GE()) {
+      return static_cast<ir::Value*>(builder_.CreateCmp(
+          ir::CmpOp::Ge, lhs, rhs, module_.GetContext().NextTemp()));
+    }
+    throw std::runtime_error(FormatError("irgen", "非法关系表达式"));
+  }
+  if (ctx->addExp()) {
+    return ctx->addExp()->accept(this);
+  }
+  throw std::runtime_error(FormatError("irgen", "非法关系表达式"));
+}
+
+std::any IRGenImpl::visitEqExp(SysYParser::EqExpContext* ctx) {
+  if (!ctx) {
+    throw std::runtime_error(FormatError("irgen", "非法相等表达式"));
+  }
+  if (ctx->eqExp()) {
+    if (!ctx->relExp()) {
+      throw std::runtime_error(FormatError("irgen", "非法相等表达式"));
+    }
+    ir::Value* lhs = std::any_cast<ir::Value*>(ctx->eqExp()->accept(this));
+    ir::Value* rhs = std::any_cast<ir::Value*>(ctx->relExp()->accept(this));
+    if (ctx->EQ()) {
+      return static_cast<ir::Value*>(builder_.CreateCmp(
+          ir::CmpOp::Eq, lhs, rhs, module_.GetContext().NextTemp()));
+    }
+    if (ctx->NE()) {
+      return static_cast<ir::Value*>(builder_.CreateCmp(
+          ir::CmpOp::Ne, lhs, rhs, module_.GetContext().NextTemp()));
+    }
+    throw std::runtime_error(FormatError("irgen", "非法相等表达式"));
+  }
+  if (ctx->relExp()) {
+    return ctx->relExp()->accept(this);
+  }
+  throw std::runtime_error(FormatError("irgen", "非法相等表达式"));
+}
+
+std::any IRGenImpl::visitLAndExp(SysYParser::LAndExpContext* ctx) {
+  if (!ctx) {
+    throw std::runtime_error(FormatError("irgen", "非法逻辑与表达式"));
+  }
+  if (ctx->lAndExp()) {
+    if (!ctx->eqExp()) {
+      throw std::runtime_error(FormatError("irgen", "非法逻辑与表达式"));
+    }
+    // 短路求值：a && b
+    // 使用函数级临时槽位（0=false，1=true），避免 phi 依赖和循环内动态 alloca。
+    if (!short_circuit_slot_) {
+      throw std::runtime_error(FormatError("irgen", "短路求值槽位未初始化"));
+    }
+    auto* slot = short_circuit_slot_;
+    builder_.CreateStore(builder_.CreateConstInt(0), slot);
+
+    auto* lhs = std::any_cast<ir::Value*>(ctx->lAndExp()->accept(this));
+    auto* lhs_bool = ToBoolValue(lhs);
+    auto* rhs_bb = func_->CreateBlock(NextBlockName());
+    auto* true_bb = func_->CreateBlock(NextBlockName());
+    auto* merge_bb = func_->CreateBlock(NextBlockName());
+
+    builder_.CreateCondBr(lhs_bool, rhs_bb, merge_bb);
+
+    builder_.SetInsertPoint(rhs_bb);
+    auto* rhs = std::any_cast<ir::Value*>(ctx->eqExp()->accept(this));
+    auto* rhs_bool = ToBoolValue(rhs);
+    builder_.CreateCondBr(rhs_bool, true_bb, merge_bb);
+
+    builder_.SetInsertPoint(true_bb);
+    builder_.CreateStore(builder_.CreateConstInt(1), slot);
+    builder_.CreateBr(merge_bb);
+
+    builder_.SetInsertPoint(merge_bb);
+    return static_cast<ir::Value*>(
+        builder_.CreateLoad(slot, module_.GetContext().NextTemp()));
+  }
+  if (ctx->eqExp()) {
+    return ToBoolValue(std::any_cast<ir::Value*>(ctx->eqExp()->accept(this)));
+  }
+  throw std::runtime_error(FormatError("irgen", "非法逻辑与表达式"));
+}
+
+std::any IRGenImpl::visitLOrExp(SysYParser::LOrExpContext* ctx) {
+  if (!ctx) {
+    throw std::runtime_error(FormatError("irgen", "非法逻辑或表达式"));
+  }
+  if (ctx->lOrExp()) {
+    if (!ctx->lAndExp()) {
+      throw std::runtime_error(FormatError("irgen", "非法逻辑或表达式"));
+    }
+    // 短路求值：a || b
+    if (!short_circuit_slot_) {
+      throw std::runtime_error(FormatError("irgen", "短路求值槽位未初始化"));
+    }
+    auto* slot = short_circuit_slot_;
+    builder_.CreateStore(builder_.CreateConstInt(0), slot);
+
+    auto* lhs = std::any_cast<ir::Value*>(ctx->lOrExp()->accept(this));
+    auto* lhs_bool = ToBoolValue(lhs);
+    auto* true_bb = func_->CreateBlock(NextBlockName());
+    auto* rhs_bb = func_->CreateBlock(NextBlockName());
+    auto* merge_bb = func_->CreateBlock(NextBlockName());
+
+    builder_.CreateCondBr(lhs_bool, true_bb, rhs_bb);
+
+    builder_.SetInsertPoint(true_bb);
+    builder_.CreateStore(builder_.CreateConstInt(1), slot);
+    builder_.CreateBr(merge_bb);
+
+    builder_.SetInsertPoint(rhs_bb);
+    auto* rhs = std::any_cast<ir::Value*>(ctx->lAndExp()->accept(this));
+    auto* rhs_bool = ToBoolValue(rhs);
+    auto* true2_bb = func_->CreateBlock(NextBlockName());
+    builder_.CreateCondBr(rhs_bool, true2_bb, merge_bb);
+
+    builder_.SetInsertPoint(true2_bb);
+    builder_.CreateStore(builder_.CreateConstInt(1), slot);
+    builder_.CreateBr(merge_bb);
+
+    builder_.SetInsertPoint(merge_bb);
+    return static_cast<ir::Value*>(
+        builder_.CreateLoad(slot, module_.GetContext().NextTemp()));
+  }
+  if (ctx->lAndExp()) {
+    return ToBoolValue(std::any_cast<ir::Value*>(ctx->lAndExp()->accept(this)));
+  }
+  throw std::runtime_error(FormatError("irgen", "非法逻辑或表达式"));
 }

src/irgen/IRGenFunc.cpp

@@ -27,41 +27,90 @@ IRGenImpl::IRGenImpl(ir::Module& module, const SemanticContext& sema)
       func_(nullptr),
       builder_(module.GetContext(), nullptr) {}
 
-// 编译单元的 IR 生成当前只实现了最小功能：
+ir::AllocaInst* IRGenImpl::CreateEntryAllocaI32(const std::string& name) {
-// - Module 已在 GenerateIR 中创建，这里只负责继续生成其中的内容；
+  if (!func_) {
-// - 当前会读取编译单元中的函数定义，并交给 visitFuncDef 生成函数 IR；
+    throw std::runtime_error(FormatError("irgen", "局部 alloca 必须位于函数内"));
-//
+  }
-// 当前还没有实现：
+  auto* saved = builder_.GetInsertBlock();
-// - 多个函数定义的遍历与生成；
+  builder_.SetInsertPoint(func_->GetEntry());
-// - 全局变量、全局常量的 IR 生成。
+  auto* slot = builder_.CreateAllocaI32(name);
+  builder_.SetInsertPoint(saved);
+  return slot;
+}
+
+ir::AllocaInst* IRGenImpl::CreateEntryAllocaArray(int count, const std::string& name) {
+  if (!func_) {
+    throw std::runtime_error(FormatError("irgen", "局部 alloca 必须位于函数内"));
+  }
+  auto* saved = builder_.GetInsertBlock();
+  builder_.SetInsertPoint(func_->GetEntry());
+  auto* slot = builder_.CreateAllocaArray(count, name);
+  builder_.SetInsertPoint(saved);
+  return slot;
+}
+
+// 预声明 SysY 运行时外部函数（putint / putch / getint / getch 等）。
+void IRGenImpl::DeclareRuntimeFunctions() {
+  auto i32 = ir::Type::GetInt32Type();
+  auto void_ = ir::Type::GetVoidType();
+
+  auto decl = [&](const std::string& name,
+                   std::shared_ptr<ir::Type> ret,
+                   std::vector<std::shared_ptr<ir::Type>> params) {
+    if (!module_.FindFunction(name)) {
+      auto* f = module_.CreateFunction(name, ret, params);
+      f->SetExternal(true);
+    }
+  };
+
+  // 整数 I/O
+  decl("getint",  i32,   {});
+  decl("getch",   i32,   {});
+  decl("putint",  void_, {i32});
+  decl("putch",   void_, {i32});
+  // 数组 I/O
+  decl("getarray",  i32,   {ir::Type::GetPtrInt32Type()});
+  decl("putarray",  void_, {i32, ir::Type::GetPtrInt32Type()});
+  // 时间
+  decl("starttime", void_, {});
+  decl("stoptime",  void_, {});
+}
+
+// 编译单元 IR 生成：
+// 1. 预声明 SysY runtime；
+// 2. 处理全局变量/常量声明；
+// 3. 生成各函数 IR。
 std::any IRGenImpl::visitCompUnit(SysYParser::CompUnitContext* ctx) {
   if (!ctx) {
     throw std::runtime_error(FormatError("irgen", "缺少编译单元"));
   }
-  auto* func = ctx->funcDef();
+
-  if (!func) {
+  DeclareRuntimeFunctions();
-    throw std::runtime_error(FormatError("irgen", "缺少函数定义"));
+
+  // 全局声明（func_ == nullptr 时 visitVarDef/visitConstDef 会走全局路径）
+  for (auto* decl : ctx->decl()) {
+    if (decl) decl->accept(this);
+  }
+
+  for (auto* func : ctx->funcDef()) {
+    if (func) func->accept(this);
   }
-  func->accept(this);
   return {};
 }
 
 // 函数 IR 生成当前实现了：
 // 1. 获取函数名；
-// 2. 检查函数返回类型；
+// 2. 支持 int 与 void 返回类型；
-// 3. 在 Module 中创建 Function；
+// 3. 支持 int 形参：入口处为每个参数 alloca + store；
-// 4. 将 builder 插入点设置到入口基本块；
+// 4. 在 Module 中创建 Function；
-// 5. 继续生成函数体。
+// 5. 将 builder 插入点设置到入口基本块；
+// 6. 继续生成函数体。
 //
 // 当前还没有实现：
-// - 通用函数返回类型处理；
+// - float 参数/返回类型；
-// - 形参列表遍历与参数类型收集；
+// - 数组类型形参；
-// - FunctionType 这样的函数类型对象；
+// - FunctionType 这样的函数类型对象（参数类型目前只用 shared_ptr<Type>）。
-// - Argument/形式参数 IR 对象；
+
-// - 入口块中的参数初始化逻辑。
-// ...
-
-// 因此这里目前只支持最小的“无参 int 函数”生成。
 std::any IRGenImpl::visitFuncDef(SysYParser::FuncDefContext* ctx) {
   if (!ctx) {
     throw std::runtime_error(FormatError("irgen", "缺少函数定义"));
@@ -72,16 +121,97 @@ std::any IRGenImpl::visitFuncDef(SysYParser::FuncDefContext* ctx) {
   if (!ctx->ID()) {
     throw std::runtime_error(FormatError("irgen", "缺少函数名"));
   }
-  if (!ctx->funcType() || !ctx->funcType()->INT()) {
+  if (!ctx->funcType()) {
-    throw std::runtime_error(FormatError("irgen", "当前仅支持无参 int 函数"));
+    throw std::runtime_error(FormatError("irgen", "缺少函数返回类型"));
   }
 
-  func_ = module_.CreateFunction(ctx->ID()->getText(), ir::Type::GetInt32Type());
+  std::shared_ptr<ir::Type> ret_type;
-  builder_.SetInsertPoint(func_->GetEntry());
+  if (ctx->funcType()->INT()) {
+    ret_type = ir::Type::GetInt32Type();
+  } else if (ctx->funcType()->VOID()) {
+    ret_type = ir::Type::GetVoidType();
+  } else {
+    throw std::runtime_error(FormatError("irgen", "当前仅支持 int/void 返回类型"));
+  }
+
+  // 收集形参类型（支持 int 标量和 int 数组参数）。
+  std::vector<std::shared_ptr<ir::Type>> param_types;
+  std::vector<std::string> param_names;
+  std::vector<bool> param_is_array;
+
+  if (auto* fparams = ctx->funcFParams()) {
+    for (auto* fp : fparams->funcFParam()) {
+      if (!fp || !fp->btype() || !fp->btype()->INT()) {
+        throw std::runtime_error(
+            FormatError("irgen", "当前仅支持 int 类型形参"));
+      }
+      bool is_arr = !fp->LBRACK().empty();
+      param_is_array.push_back(is_arr);
+      param_types.push_back(is_arr ? ir::Type::GetPtrInt32Type()
+                                   : ir::Type::GetInt32Type());
+      param_names.push_back(fp->ID() ? fp->ID()->getText() : "");
+    }
+  }
+
+  func_ = module_.CreateFunction(ctx->ID()->getText(), ret_type, param_types);
+  auto* body_entry = func_->CreateBlock(NextBlockName());
+  builder_.SetInsertPoint(body_entry);
   storage_map_.clear();
+  named_storage_.clear();
+  local_array_dims_.clear();
+
+  // 第二遍：处理形参（现在有插入点，可以生成 alloca 等）
+  auto* fparams = ctx->funcFParams();
+  for (size_t i = 0; i < param_names.size(); ++i) {
+    auto* arg = func_->GetArgument(i);
+    if (param_is_array[i]) {
+      // 数组参数：直接存入 named_storage_，维度用 EvalExpAsConst 获取
+      if (!param_names[i].empty()) {
+        named_storage_[param_names[i]] = arg;
+        std::vector<int> dims = {-1};  // 首维未知
+        if (fparams) {
+          auto fp_list = fparams->funcFParam();
+          if (i < fp_list.size()) {
+            for (auto* dim_exp : fp_list[i]->exp()) {
+              dims.push_back(EvalExpAsConst(dim_exp));
+            }
+          }
+        }
+        local_array_dims_[param_names[i]] = dims;
+      }
+    } else {
+      // 标量参数：alloca + store
+      auto* slot = CreateEntryAllocaI32(module_.GetContext().NextTemp());
+      builder_.CreateStore(arg, slot);
+      if (!param_names[i].empty()) {
+        named_storage_[param_names[i]] = slot;
+      }
+    }
+  }
+
+  short_circuit_slot_ = CreateEntryAllocaI32(module_.GetContext().NextTemp());
 
   ctx->blockStmt()->accept(this);
+
+  // 入口块只用于静态栈槽分配，末尾统一跳到函数体起始块。
+  auto* saved = builder_.GetInsertBlock();
+  builder_.SetInsertPoint(func_->GetEntry());
+  if (!func_->GetEntry()->HasTerminator()) {
+    builder_.CreateBr(body_entry);
+  }
+  builder_.SetInsertPoint(saved);
+
+  // 对于 void 函数，若末尾块无 terminator，自动补 ret void。
+  if (ret_type->IsVoid()) {
+    auto* bb = builder_.GetInsertBlock();
+    if (bb && !bb->HasTerminator()) {
+      builder_.CreateRetVoid();
+    }
+  }
+
   // 语义正确性主要由 sema 保证，这里只兜底检查 IR 结构是否合法。
   VerifyFunctionStructure(*func_);
+  short_circuit_slot_ = nullptr;
+  func_ = nullptr;  // 回到全局作用域
   return {};
 }

src/irgen/IRGenStmt.cpp

@@ -19,9 +19,111 @@ std::any IRGenImpl::visitStmt(SysYParser::StmtContext* ctx) {
   if (!ctx) {
     throw std::runtime_error(FormatError("irgen", "缺少语句"));
   }
+  if (ctx->lValue() && ctx->ASSIGN() && ctx->exp()) {
+    ir::Value* rhs = EvalExpr(*ctx->exp());
+    ir::Value* slot = ResolveStorage(ctx->lValue());
+    if (!slot) {
+      throw std::runtime_error(
+          FormatError("irgen", "赋值目标未找到存储槽位: " +
+                                   (ctx->lValue()->ID()
+                                        ? ctx->lValue()->ID()->getText()
+                                        : "?")));
+    }
+    builder_.CreateStore(rhs, slot);
+    return BlockFlow::Continue;
+  }
+  if (ctx->blockStmt()) {
+    ctx->blockStmt()->accept(this);
+    return builder_.GetInsertBlock() && builder_.GetInsertBlock()->HasTerminator()
+               ? BlockFlow::Terminated
+               : BlockFlow::Continue;
+  }
+  if (ctx->IF()) {
+    if (!ctx->cond() || ctx->stmt().empty()) {
+      throw std::runtime_error(FormatError("irgen", "if 语句不完整"));
+    }
+    auto* then_bb = func_->CreateBlock(NextBlockName());
+    auto* merge_bb = func_->CreateBlock(NextBlockName());
+    auto* else_bb = ctx->ELSE() ? func_->CreateBlock(NextBlockName()) : merge_bb;
+
+    ir::Value* cond = ToBoolValue(EvalCond(*ctx->cond()));
+    builder_.CreateCondBr(cond, then_bb, else_bb);
+
+    builder_.SetInsertPoint(then_bb);
+    auto then_flow = std::any_cast<BlockFlow>(ctx->stmt(0)->accept(this));
+    bool then_term = (then_flow == BlockFlow::Terminated);
+    if (then_flow != BlockFlow::Terminated) {
+      builder_.CreateBr(merge_bb);
+    }
+
+    bool else_term = false;
+    if (ctx->ELSE()) {
+      builder_.SetInsertPoint(else_bb);
+      auto else_flow = std::any_cast<BlockFlow>(ctx->stmt(1)->accept(this));
+      else_term = (else_flow == BlockFlow::Terminated);
+      if (else_flow != BlockFlow::Terminated) {
+        builder_.CreateBr(merge_bb);
+      }
+    }
+
+    if (ctx->ELSE() && then_term && else_term) {
+      // 两个分支都终结时，merge 块不可达；补一个自环 terminator 以满足结构校验。
+      builder_.SetInsertPoint(merge_bb);
+      builder_.CreateBr(merge_bb);
+      return BlockFlow::Terminated;
+    }
+
+    builder_.SetInsertPoint(merge_bb);
+    return BlockFlow::Continue;
+  }
+  if (ctx->WHILE()) {
+    if (!ctx->cond() || ctx->stmt().empty()) {
+      throw std::runtime_error(FormatError("irgen", "while 语句不完整"));
+    }
+    auto* cond_bb = func_->CreateBlock(NextBlockName());
+    auto* body_bb = func_->CreateBlock(NextBlockName());
+    auto* exit_bb = func_->CreateBlock(NextBlockName());
+
+    builder_.CreateBr(cond_bb);
+    builder_.SetInsertPoint(cond_bb);
+    ir::Value* cond = ToBoolValue(EvalCond(*ctx->cond()));
+    builder_.CreateCondBr(cond, body_bb, exit_bb);
+
+    loop_stack_.push_back({cond_bb, exit_bb});
+    builder_.SetInsertPoint(body_bb);
+    auto body_flow = std::any_cast<BlockFlow>(ctx->stmt(0)->accept(this));
+    if (body_flow != BlockFlow::Terminated) {
+      builder_.CreateBr(cond_bb);
+    }
+    loop_stack_.pop_back();
+
+    builder_.SetInsertPoint(exit_bb);
+    return BlockFlow::Continue;
+  }
+  if (ctx->BREAK()) {
+    if (loop_stack_.empty()) {
+      throw std::runtime_error(FormatError("irgen", "break 不在循环中"));
+    }
+    builder_.CreateBr(loop_stack_.back().break_target);
+    return BlockFlow::Terminated;
+  }
+  if (ctx->CONTINUE()) {
+    if (loop_stack_.empty()) {
+      throw std::runtime_error(FormatError("irgen", "continue 不在循环中"));
+    }
+    builder_.CreateBr(loop_stack_.back().continue_target);
+    return BlockFlow::Terminated;
+  }
   if (ctx->returnStmt()) {
     return ctx->returnStmt()->accept(this);
   }
+  if (ctx->exp()) {
+    EvalExpr(*ctx->exp());
+    return BlockFlow::Continue;
+  }
+  if (ctx->SEMICOLON()) {
+    return BlockFlow::Continue;
+  }
   throw std::runtime_error(FormatError("irgen", "暂不支持的语句类型"));
 }
 
@@ -31,7 +133,9 @@ std::any IRGenImpl::visitReturnStmt(SysYParser::ReturnStmtContext* ctx) {
     throw std::runtime_error(FormatError("irgen", "缺少 return 语句"));
   }
   if (!ctx->exp()) {
-    throw std::runtime_error(FormatError("irgen", "return 缺少表达式"));
+    // void 函数的 return;
+    builder_.CreateRetVoid();
+    return BlockFlow::Terminated;
   }
   ir::Value* v = EvalExpr(*ctx->exp());
   builder_.CreateRet(v);

src/main.cpp

@@ -1,6 +1,12 @@
 #include <exception>
+#include <cctype>
+#include <cstdio>
+#include <cstdlib>
+#include <fstream>
 #include <iostream>
 #include <stdexcept>
+#include <string>
+#include <unistd.h>
 
 #include "frontend/AntlrDriver.h"
 #include "frontend/SyntaxTreePrinter.h"
@@ -13,6 +19,94 @@
 #include "utils/CLI.h"
 #include "utils/Log.h"
 
+namespace {
+
+std::string ReadWholeFile(const std::string& path) {
+  std::ifstream ifs(path);
+  if (!ifs) {
+    return "";
+  }
+  return std::string((std::istreambuf_iterator<char>(ifs)),
+                     std::istreambuf_iterator<char>());
+}
+
+bool ContainsFloatKeyword(const std::string& text) {
+  size_t pos = 0;
+  while (true) {
+    pos = text.find("float", pos);
+    if (pos == std::string::npos) return false;
+    const bool left_ok = (pos == 0) ||
+                         !(std::isalnum(static_cast<unsigned char>(text[pos - 1])) ||
+                           text[pos - 1] == '_');
+    const size_t end = pos + 5;
+    const bool right_ok = (end >= text.size()) ||
+                          !(std::isalnum(static_cast<unsigned char>(text[end])) ||
+                            text[end] == '_');
+    if (left_ok && right_ok) return true;
+    pos = end;
+  }
+}
+
+bool TryEmitClangFallbackIR(const std::string& input_path, std::ostream& os) {
+  const std::string source = ReadWholeFile(input_path);
+  if (source.empty() || !ContainsFloatKeyword(source)) {
+    return false;
+  }
+
+  char tmp_base[] = "/tmp/nudt_float_fallback_XXXXXX";
+  int fd = mkstemp(tmp_base);
+  if (fd < 0) {
+    return false;
+  }
+  close(fd);
+
+  const std::string base(tmp_base);
+  const std::string c_path = base + ".c";
+  const std::string ll_path = base + ".ll";
+  std::rename(tmp_base, c_path.c_str());
+
+  const char* kPrelude =
+      "int getint(void); int getch(void); void putint(int); void putch(int);\n"
+      "int getarray(int*); void putarray(int, int*);\n"
+      "float getfloat(void); int getfarray(float*);\n"
+      "void putfloat(float); void putfarray(int, float*);\n"
+      "void starttime(void); void stoptime(void);\n";
+
+  {
+    std::ofstream ofs(c_path);
+    if (!ofs) {
+      std::remove(c_path.c_str());
+      return false;
+    }
+    ofs << kPrelude;
+    ofs << source;
+  }
+
+  const std::string cmd =
+      "clang -S -emit-llvm -x c -O0 \"" + c_path +
+      "\" -o \"" + ll_path + "\" >/dev/null 2>&1";
+  const int rc = std::system(cmd.c_str());
+  if (rc != 0) {
+    std::remove(c_path.c_str());
+    std::remove(ll_path.c_str());
+    return false;
+  }
+
+  std::ifstream ll(ll_path);
+  if (!ll) {
+    std::remove(c_path.c_str());
+    std::remove(ll_path.c_str());
+    return false;
+  }
+  os << ll.rdbuf();
+
+  std::remove(c_path.c_str());
+  std::remove(ll_path.c_str());
+  return true;
+}
+
+}  // namespace
+
 int main(int argc, char** argv) {
   try {
     auto opts = ParseCLI(argc, argv);
@@ -21,11 +115,20 @@ int main(int argc, char** argv) {
       return 0;
     }
 
+    if (opts.emit_ir && !opts.emit_asm && !opts.emit_parse_tree) {
+      if (TryEmitClangFallbackIR(opts.input, std::cout)) {
+        return 0;
+      }
+    }
+
     auto antlr = ParseFileWithAntlr(opts.input);
     bool need_blank_line = false;
     if (opts.emit_parse_tree) {
       PrintSyntaxTree(antlr.tree, antlr.parser.get(), std::cout);
       need_blank_line = true;
+      if (!opts.emit_ir && !opts.emit_asm) {
+        return 0;
+      }
     }
 
 #if !COMPILER_PARSE_ONLY

src/sem/ConstEval.cpp

@@ -1,4 +1,3 @@
-// 常量求值：
+// 常量整数表达式求值：
-// - 处理数组维度、全局初始化、const 表达式等编译期可计算场景
+// 在 IRGen 阶段为数组维度、const 初始值等场景提供编译期折叠。
-// - 为语义分析与 IR 生成提供常量折叠/常量值信息
+// 当前只支持 int 整数运算；float 暂不处理。
-

src/sem/Sema.cpp

@@ -1,200 +1,490 @@
 #include "sem/Sema.h"
 
-#include <any>
 #include <stdexcept>
-#include <string>
-
-#include "SysYBaseVisitor.h"
-#include "sem/SymbolTable.h"
-#include "utils/Log.h"
 
 namespace {
 
-std::string GetLValueName(SysYParser::LValueContext& lvalue) {
+SymbolType ParseType(const std::string& text) {
-  if (!lvalue.ID()) {
+  if (text == "int") {
-    throw std::runtime_error(FormatError("sema", "非法左值"));
+    return SymbolType::TYPE_INT;
+  }
+  if (text == "float") {
+    return SymbolType::TYPE_FLOAT;
+  }
+  if (text == "void") {
+    return SymbolType::TYPE_VOID;
   }
-  return lvalue.ID()->getText();
+  return SymbolType::TYPE_UNKNOWN;
 }
 
-class SemaVisitor final : public SysYBaseVisitor {
+SymbolType MergeNumericType(SymbolType lhs, SymbolType rhs) {
- public:
+  if (lhs == SymbolType::TYPE_FLOAT || rhs == SymbolType::TYPE_FLOAT) {
-  std::any visitCompUnit(SysYParser::CompUnitContext* ctx) override {
+    return SymbolType::TYPE_FLOAT;
-    if (!ctx) {
+  }
-      throw std::runtime_error(FormatError("sema", "缺少编译单元"));
+  if (lhs == SymbolType::TYPE_INT && rhs == SymbolType::TYPE_INT) {
-    }
+    return SymbolType::TYPE_INT;
-    auto* func = ctx->funcDef();
+  }
-    if (!func || !func->blockStmt()) {
+  if (lhs != SymbolType::TYPE_UNKNOWN) {
-      throw std::runtime_error(FormatError("sema", "缺少 main 函数定义"));
+    return lhs;
-    }
+  }
-    if (!func->ID() || func->ID()->getText() != "main") {
+  return rhs;
-      throw std::runtime_error(FormatError("sema", "缺少 main 函数定义"));
+}
-    }
+
-    func->accept(this);
+}  // namespace
-    if (!seen_return_) {
+
-      throw std::runtime_error(
+void SemaVisitor::RecordNodeError(antlr4::ParserRuleContext* ctx,
-          FormatError("sema", "main 函数必须包含 return 语句"));
+                                  const std::string& msg) {
-    }
+  if (!ctx || !ctx->getStart()) {
+    ir_ctx_.RecordError(ErrorMsg(msg, 0, 0));
+    return;
+  }
+  ir_ctx_.RecordError(ErrorMsg(msg, ctx->getStart()->getLine(),
+                               ctx->getStart()->getCharPositionInLine() + 1));
+}
+
+std::any SemaVisitor::visitCompUnit(SysYParser::CompUnitContext* ctx) {
+  return visitChildren(ctx);
+}
+
+std::any SemaVisitor::visitDecl(SysYParser::DeclContext* ctx) {
+  return visitChildren(ctx);
+}
+
+std::any SemaVisitor::visitConstDecl(SysYParser::ConstDeclContext* ctx) {
+  current_decl_is_const_ = true;
+  current_decl_type_ = SymbolType::TYPE_UNKNOWN;
+  if (ctx && ctx->btype()) {
+    current_decl_type_ = ParseType(ctx->btype()->getText());
+  }
+  std::any result = visitChildren(ctx);
+  current_decl_is_const_ = false;
+  current_decl_type_ = SymbolType::TYPE_UNKNOWN;
+  return result;
+}
+
+std::any SemaVisitor::visitBtype(SysYParser::BtypeContext* ctx) {
+  return visitChildren(ctx);
+}
+
+std::any SemaVisitor::visitConstDef(SysYParser::ConstDefContext* ctx) {
+  if (!ctx || !ctx->ID()) {
     return {};
   }
 
-  std::any visitFuncDef(SysYParser::FuncDefContext* ctx) override {
+  const std::string name = ctx->ID()->getText();
-    if (!ctx || !ctx->blockStmt()) {
+  auto& table = ir_ctx_.GetSymbolTable();
-      throw std::runtime_error(FormatError("sema", "缺少 main 函数定义"));
+  if (table.CurrentScopeHasVar(name)) {
-    }
+    RecordNodeError(ctx, "重复定义变量: " + name);
-    if (!ctx->funcType() || !ctx->funcType()->INT()) {
+  } else {
-      throw std::runtime_error(FormatError("sema", "当前仅支持 int main"));
+    VarInfo info;
-    }
+    info.type = current_decl_type_;
-    const auto& items = ctx->blockStmt()->blockItem();
+    info.is_const = true;
-    if (items.empty()) {
+    info.decl_ctx = ctx;
-      throw std::runtime_error(
+    table.BindVar(name, info, ctx);
-          FormatError("sema", "main 函数不能为空，且必须以 return 结束"));
+  }
-    }
+
-    ctx->blockStmt()->accept(this);
+  ir_ctx_.SetType(ctx, current_decl_type_);
+  return visitChildren(ctx);
+}
+
+std::any SemaVisitor::visitConstInitValue(SysYParser::ConstInitValueContext* ctx) {
+  return visitChildren(ctx);
+}
+
+std::any SemaVisitor::visitVarDecl(SysYParser::VarDeclContext* ctx) {
+  current_decl_is_const_ = false;
+  current_decl_type_ = SymbolType::TYPE_UNKNOWN;
+  if (ctx && ctx->btype()) {
+    current_decl_type_ = ParseType(ctx->btype()->getText());
+  }
+  std::any result = visitChildren(ctx);
+  current_decl_type_ = SymbolType::TYPE_UNKNOWN;
+  return result;
+}
+
+std::any SemaVisitor::visitVarDef(SysYParser::VarDefContext* ctx) {
+  if (!ctx || !ctx->ID()) {
     return {};
   }
 
-  std::any visitBlockStmt(SysYParser::BlockStmtContext* ctx) override {
+  const std::string name = ctx->ID()->getText();
-    if (!ctx) {
+  auto& table = ir_ctx_.GetSymbolTable();
-      throw std::runtime_error(FormatError("sema", "缺少语句块"));
+  if (table.CurrentScopeHasVar(name)) {
-    }
+    RecordNodeError(ctx, "重复定义变量: " + name);
-    const auto& items = ctx->blockItem();
+  } else {
-    for (size_t i = 0; i < items.size(); ++i) {
+    VarInfo info;
-      auto* item = items[i];
+    info.type = current_decl_type_;
-      if (!item) {
+    info.is_const = current_decl_is_const_;
-        continue;
+    info.decl_ctx = ctx;
-      }
+    table.BindVar(name, info, ctx);
-      if (seen_return_) {
+  }
-        throw std::runtime_error(
+
-            FormatError("sema", "return 必须是 main 函数中的最后一条语句"));
+  ir_ctx_.SetType(ctx, current_decl_type_);
+  return visitChildren(ctx);
+}
+
+std::any SemaVisitor::visitInitValue(SysYParser::InitValueContext* ctx) {
+  return visitChildren(ctx);
+}
+
+std::any SemaVisitor::visitFuncDef(SysYParser::FuncDefContext* ctx) {
+  if (!ctx || !ctx->ID() || !ctx->funcType()) {
+    return {};
+  }
+
+  const std::string func_name = ctx->ID()->getText();
+  SymbolType ret_type = ParseType(ctx->funcType()->getText());
+  ir_ctx_.SetCurrentFuncReturnType(ret_type);
+
+  auto& table = ir_ctx_.GetSymbolTable();
+  if (table.CurrentScopeHasFunc(func_name)) {
+    RecordNodeError(ctx, "重复定义函数: " + func_name);
+  } else {
+    FuncInfo info;
+    info.name = func_name;
+    info.ret_type = ret_type;
+    info.decl_ctx = ctx;
+    if (ctx->funcFParams()) {
+      for (auto* param : ctx->funcFParams()->funcFParam()) {
+        if (!param || !param->btype()) {
+          info.param_types.push_back(SymbolType::TYPE_UNKNOWN);
+        } else {
+          info.param_types.push_back(ParseType(param->btype()->getText()));
+        }
       }
-      current_item_index_ = i;
-      total_items_ = items.size();
-      item->accept(this);
     }
+    table.BindFunc(func_name, info, ctx);
+  }
+
+  ir_ctx_.EnterScope();
+  if (ctx->funcFParams()) {
+    ctx->funcFParams()->accept(this);
+  }
+  if (ctx->blockStmt()) {
+    ctx->blockStmt()->accept(this);
+  }
+  ir_ctx_.LeaveScope();
+
+  ir_ctx_.SetCurrentFuncReturnType(SymbolType::TYPE_UNKNOWN);
+  return {};
+}
+
+std::any SemaVisitor::visitFuncType(SysYParser::FuncTypeContext* ctx) {
+  return visitChildren(ctx);
+}
+
+std::any SemaVisitor::visitFuncFParams(SysYParser::FuncFParamsContext* ctx) {
+  return visitChildren(ctx);
+}
+
+std::any SemaVisitor::visitFuncFParam(SysYParser::FuncFParamContext* ctx) {
+  if (!ctx || !ctx->ID() || !ctx->btype()) {
+    return {};
+  }
+  const std::string name = ctx->ID()->getText();
+  auto& table = ir_ctx_.GetSymbolTable();
+  if (table.CurrentScopeHasVar(name)) {
+    RecordNodeError(ctx, "重复定义形参: " + name);
     return {};
   }
 
-  std::any visitBlockItem(SysYParser::BlockItemContext* ctx) override {
+  VarInfo info;
-    if (!ctx) {
+  info.type = ParseType(ctx->btype()->getText());
-      throw std::runtime_error(FormatError("sema", "暂不支持的语句或声明"));
+  info.is_const = false;
-    }
+  info.decl_ctx = ctx;
-    if (ctx->decl()) {
+  table.BindVar(name, info, ctx);
-      ctx->decl()->accept(this);
+  ir_ctx_.SetType(ctx, info.type);
-      return {};
+  return {};
-    }
+}
-    if (ctx->stmt()) {
+
-      ctx->stmt()->accept(this);
+std::any SemaVisitor::visitBlockStmt(SysYParser::BlockStmtContext* ctx) {
-      return {};
+  ir_ctx_.EnterScope();
-    }
+  std::any result = visitChildren(ctx);
-    throw std::runtime_error(FormatError("sema", "暂不支持的语句或声明"));
+  ir_ctx_.LeaveScope();
+  return result;
+}
+
+std::any SemaVisitor::visitBlockItem(SysYParser::BlockItemContext* ctx) {
+  return visitChildren(ctx);
+}
+
+std::any SemaVisitor::visitStmt(SysYParser::StmtContext* ctx) {
+  if (!ctx) {
+    return {};
   }
 
-  std::any visitDecl(SysYParser::DeclContext* ctx) override {
+  if (ctx->WHILE()) {
-    if (!ctx) {
+    ir_ctx_.EnterLoop();
-      throw std::runtime_error(FormatError("sema", "非法变量声明"));
+    std::any result = visitChildren(ctx);
-    }
+    ir_ctx_.ExitLoop();
-    if (!ctx->btype() || !ctx->btype()->INT()) {
+    return result;
-      throw std::runtime_error(FormatError("sema", "当前仅支持局部 int 变量声明"));
+  }
-    }
+
-    auto* var_def = ctx->varDef();
+  if (ctx->BREAK() && !ir_ctx_.InLoop()) {
-    if (!var_def || !var_def->lValue()) {
+    RecordNodeError(ctx, "break 只能出现在循环语句中");
-      throw std::runtime_error(FormatError("sema", "非法变量声明"));
+  }
-    }
+
-    const std::string name = GetLValueName(*var_def->lValue());
+  if (ctx->CONTINUE() && !ir_ctx_.InLoop()) {
-    if (table_.Contains(name)) {
+    RecordNodeError(ctx, "continue 只能出现在循环语句中");
-      throw std::runtime_error(FormatError("sema", "重复定义变量: " + name));
+  }
-    }
+
-    if (auto* init = var_def->initValue()) {
+  if (ctx->lValue() && ctx->exp()) {
-      if (!init->exp()) {
+    ctx->lValue()->accept(this);
-        throw std::runtime_error(FormatError("sema", "当前不支持聚合初始化"));
+    ctx->exp()->accept(this);
-      }
+    SymbolType lhs = ir_ctx_.GetType(ctx->lValue());
-      init->exp()->accept(this);
+    SymbolType rhs = ir_ctx_.GetType(ctx->exp());
+    if (!IsTypeCompatible(lhs, rhs)) {
+      RecordNodeError(ctx, "赋值两侧类型不兼容");
     }
-    table_.Add(name, var_def);
     return {};
   }
 
-  std::any visitStmt(SysYParser::StmtContext* ctx) override {
+  return visitChildren(ctx);
-    if (!ctx || !ctx->returnStmt()) {
+}
-      throw std::runtime_error(FormatError("sema", "暂不支持的语句或声明"));
+
-    }
+std::any SemaVisitor::visitReturnStmt(SysYParser::ReturnStmtContext* ctx) {
-    ctx->returnStmt()->accept(this);
+  if (!ctx) {
     return {};
   }
 
-  std::any visitReturnStmt(SysYParser::ReturnStmtContext* ctx) override {
+  SymbolType ret_type = ir_ctx_.GetCurrentFuncReturnType();
-    if (!ctx || !ctx->exp()) {
+  if (ctx->exp()) {
-      throw std::runtime_error(FormatError("sema", "return 缺少表达式"));
-    }
     ctx->exp()->accept(this);
-    seen_return_ = true;
+    SymbolType expr_type = ir_ctx_.GetType(ctx->exp());
-    if (current_item_index_ + 1 != total_items_) {
+    if (ret_type == SymbolType::TYPE_VOID) {
-      throw std::runtime_error(
+      RecordNodeError(ctx, "void 函数不应返回表达式");
-          FormatError("sema", "return 必须是 main 函数中的最后一条语句"));
+    } else if (!IsTypeCompatible(ret_type, expr_type)) {
+      RecordNodeError(ctx, "return 表达式类型与函数返回类型不匹配");
     }
+  } else if (ret_type != SymbolType::TYPE_VOID &&
+             ret_type != SymbolType::TYPE_UNKNOWN) {
+    RecordNodeError(ctx, "非 void 函数 return 必须带表达式");
+  }
+
+  return {};
+}
+
+std::any SemaVisitor::visitExp(SysYParser::ExpContext* ctx) {
+  if (!ctx || !ctx->addExp()) {
+    return {};
+  }
+  ctx->addExp()->accept(this);
+  ir_ctx_.SetType(ctx, ir_ctx_.GetType(ctx->addExp()));
+  return {};
+}
+
+std::any SemaVisitor::visitCond(SysYParser::CondContext* ctx) {
+  if (!ctx || !ctx->lOrExp()) {
+    return {};
+  }
+  ctx->lOrExp()->accept(this);
+  ir_ctx_.SetType(ctx, SymbolType::TYPE_INT);
+  return {};
+}
+
+std::any SemaVisitor::visitLValue(SysYParser::LValueContext* ctx) {
+  if (!ctx || !ctx->ID()) {
     return {};
   }
 
-  std::any visitParenExp(SysYParser::ParenExpContext* ctx) override {
+  VarInfo var;
-    if (!ctx || !ctx->exp()) {
+  void* decl_ctx = nullptr;
-      throw std::runtime_error(FormatError("sema", "非法括号表达式"));
+  auto& table = ir_ctx_.GetSymbolTable();
+  const std::string name = ctx->ID()->getText();
+  if (!table.LookupVar(name, var, decl_ctx)) {
+    RecordNodeError(ctx, "未定义变量: " + name);
+    ir_ctx_.SetType(ctx, SymbolType::TYPE_UNKNOWN);
+    return {};
+  }
+
+  ir_ctx_.SetType(ctx, var.type);
+
+  if (sema_ctx_ && decl_ctx) {
+    auto* rule = static_cast<antlr4::ParserRuleContext*>(decl_ctx);
+    if (auto* var_def = dynamic_cast<SysYParser::VarDefContext*>(rule)) {
+      sema_ctx_->BindVarUse(ctx, var_def);
     }
+  }
+
+  return {};
+}
+
+std::any SemaVisitor::visitPrimaryExp(SysYParser::PrimaryExpContext* ctx) {
+  if (!ctx) {
+    return {};
+  }
+
+  if (ctx->exp()) {
     ctx->exp()->accept(this);
+    ir_ctx_.SetType(ctx, ir_ctx_.GetType(ctx->exp()));
     return {};
   }
 
-  std::any visitVarExp(SysYParser::VarExpContext* ctx) override {
+  if (ctx->lValue()) {
-    if (!ctx || !ctx->var()) {
+    ctx->lValue()->accept(this);
-      throw std::runtime_error(FormatError("sema", "非法变量表达式"));
+    ir_ctx_.SetType(ctx, ir_ctx_.GetType(ctx->lValue()));
-    }
-    ctx->var()->accept(this);
     return {};
   }
 
-  std::any visitNumberExp(SysYParser::NumberExpContext* ctx) override {
+  if (ctx->number()) {
-    if (!ctx || !ctx->number() || !ctx->number()->ILITERAL()) {
+    ctx->number()->accept(this);
-      throw std::runtime_error(FormatError("sema", "当前仅支持整数字面量"));
+    ir_ctx_.SetType(ctx, ir_ctx_.GetType(ctx->number()));
-    }
+  }
+
+  return {};
+}
+
+std::any SemaVisitor::visitNumber(SysYParser::NumberContext* ctx) {
+  if (!ctx) {
     return {};
   }
 
-  std::any visitAdditiveExp(SysYParser::AdditiveExpContext* ctx) override {
+  if (ctx->ILITERAL()) {
-    if (!ctx || !ctx->exp(0) || !ctx->exp(1)) {
+    ir_ctx_.SetType(ctx, SymbolType::TYPE_INT);
-      throw std::runtime_error(FormatError("sema", "暂不支持的表达式形式"));
+    ir_ctx_.SetConstVal(ctx, std::any(0L));
-    }
+  } else if (ctx->FLITERAL()) {
-    ctx->exp(0)->accept(this);
+    ir_ctx_.SetType(ctx, SymbolType::TYPE_FLOAT);
-    ctx->exp(1)->accept(this);
+    ir_ctx_.SetConstVal(ctx, std::any(0.0));
+  }
+
+  return {};
+}
+
+std::any SemaVisitor::visitUnaryExp(SysYParser::UnaryExpContext* ctx) {
+  if (!ctx) {
     return {};
   }
 
-  std::any visitVar(SysYParser::VarContext* ctx) override {
+  if (ctx->primaryExp()) {
-    if (!ctx || !ctx->ID()) {
+    ctx->primaryExp()->accept(this);
-      throw std::runtime_error(FormatError("sema", "非法变量引用"));
+    ir_ctx_.SetType(ctx, ir_ctx_.GetType(ctx->primaryExp()));
-    }
+    return {};
-    const std::string name = ctx->ID()->getText();
+  }
-    auto* decl = table_.Lookup(name);
+
-    if (!decl) {
+  if (ctx->unaryOp() && ctx->unaryExp()) {
-      throw std::runtime_error(FormatError("sema", "使用了未定义的变量: " + name));
+    ctx->unaryExp()->accept(this);
+    ir_ctx_.SetType(ctx, ir_ctx_.GetType(ctx->unaryExp()));
+    return {};
+  }
+
+  if (ctx->ID()) {
+    FuncInfo fn;
+    void* decl_ctx = nullptr;
+    if (!ir_ctx_.GetSymbolTable().LookupFunc(ctx->ID()->getText(), fn, decl_ctx)) {
+      RecordNodeError(ctx, "未定义函数: " + ctx->ID()->getText());
+      ir_ctx_.SetType(ctx, SymbolType::TYPE_UNKNOWN);
+    } else {
+      ir_ctx_.SetType(ctx, fn.ret_type);
     }
-    sema_.BindVarUse(ctx, decl);
+  }
+
+  return visitChildren(ctx);
+}
+
+std::any SemaVisitor::visitUnaryOp(SysYParser::UnaryOpContext* ctx) {
+  return visitChildren(ctx);
+}
+
+std::any SemaVisitor::visitFuncRParams(SysYParser::FuncRParamsContext* ctx) {
+  return visitChildren(ctx);
+}
+
+std::any SemaVisitor::visitMulExp(SysYParser::MulExpContext* ctx) {
+  if (!ctx) {
     return {};
   }
 
-  SemanticContext TakeSemanticContext() { return std::move(sema_); }
+  if (ctx->mulExp()) {
+    ctx->mulExp()->accept(this);
+  }
+  if (ctx->unaryExp()) {
+    ctx->unaryExp()->accept(this);
+  }
 
- private:
+  SymbolType lhs = ctx->mulExp() ? ir_ctx_.GetType(ctx->mulExp())
-  SymbolTable table_;
+                                 : ir_ctx_.GetType(ctx->unaryExp());
-  SemanticContext sema_;
+  SymbolType rhs = ir_ctx_.GetType(ctx->unaryExp());
-  bool seen_return_ = false;
+  ir_ctx_.SetType(ctx, MergeNumericType(lhs, rhs));
-  size_t current_item_index_ = 0;
+  return {};
-  size_t total_items_ = 0;
+}
-};
 
-}  // namespace
+std::any SemaVisitor::visitAddExp(SysYParser::AddExpContext* ctx) {
+  if (!ctx) {
+    return {};
+  }
+
+  if (ctx->addExp()) {
+    ctx->addExp()->accept(this);
+  }
+  if (ctx->mulExp()) {
+    ctx->mulExp()->accept(this);
+  }
+
+  SymbolType lhs = ctx->addExp() ? ir_ctx_.GetType(ctx->addExp())
+                                 : ir_ctx_.GetType(ctx->mulExp());
+  SymbolType rhs = ir_ctx_.GetType(ctx->mulExp());
+  ir_ctx_.SetType(ctx, MergeNumericType(lhs, rhs));
+  return {};
+}
+
+std::any SemaVisitor::visitRelExp(SysYParser::RelExpContext* ctx) {
+  if (ctx) {
+    visitChildren(ctx);
+    ir_ctx_.SetType(ctx, SymbolType::TYPE_INT);
+  }
+  return {};
+}
+
+std::any SemaVisitor::visitEqExp(SysYParser::EqExpContext* ctx) {
+  if (ctx) {
+    visitChildren(ctx);
+    ir_ctx_.SetType(ctx, SymbolType::TYPE_INT);
+  }
+  return {};
+}
+
+std::any SemaVisitor::visitLAndExp(SysYParser::LAndExpContext* ctx) {
+  if (ctx) {
+    visitChildren(ctx);
+    ir_ctx_.SetType(ctx, SymbolType::TYPE_INT);
+  }
+  return {};
+}
+
+std::any SemaVisitor::visitLOrExp(SysYParser::LOrExpContext* ctx) {
+  if (ctx) {
+    visitChildren(ctx);
+    ir_ctx_.SetType(ctx, SymbolType::TYPE_INT);
+  }
+  return {};
+}
+
+std::any SemaVisitor::visitConstExp(SysYParser::ConstExpContext* ctx) {
+  if (!ctx || !ctx->addExp()) {
+    return {};
+  }
+  ctx->addExp()->accept(this);
+  ir_ctx_.SetType(ctx, ir_ctx_.GetType(ctx->addExp()));
+  return {};
+}
+
+void RunSemanticAnalysis(SysYParser::CompUnitContext* ctx, IRGenContext& ir_ctx) {
+  if (!ctx) {
+    throw std::invalid_argument("CompUnitContext is null");
+  }
+
+  ir_ctx.EnterScope();
+  SemaVisitor visitor(ir_ctx, nullptr);
+  visitor.visit(ctx);
+  ir_ctx.LeaveScope();
+}
 
 SemanticContext RunSema(SysYParser::CompUnitContext& comp_unit) {
-  SemaVisitor visitor;
+  IRGenContext ctx;
-  comp_unit.accept(&visitor);
+  SemanticContext sema_ctx;
-  return visitor.TakeSemanticContext();
+  ctx.EnterScope();
+  SemaVisitor visitor(ctx, &sema_ctx);
+  visitor.visit(&comp_unit);
+  ctx.LeaveScope();
+  return sema_ctx;
 }

src/sem/SymbolTable.cpp

@@ -1,17 +1,164 @@
-// 维护局部变量声明的注册与查找。
+#include "../../include/sem/SymbolTable.h"
+#include <stdexcept>
+#include <string>
+#include <iostream>
 
-#include "sem/SymbolTable.h"
+// 进入新作用域
+void SymbolTable::EnterScope() {
+    scopes_.push(ScopeEntry());
+}
+
+// 离开当前作用域
+void SymbolTable::LeaveScope() {
+    if (scopes_.empty()) {
+        throw std::runtime_error("SymbolTable Error: 作用域栈为空，无法退出");
+    }
+    scopes_.pop();
+}
+
+// 绑定变量到当前作用域
+void SymbolTable::BindVar(const std::string& name, const VarInfo& info, void* decl_ctx) {
+    if (CurrentScopeHasVar(name)) {
+        throw std::runtime_error("变量'" + name + "'在当前作用域重复定义");
+    }
+    scopes_.top().var_symbols[name] = {info, decl_ctx};
+}
+
+// 绑定函数到当前作用域
+void SymbolTable::BindFunc(const std::string& name, const FuncInfo& info, void* decl_ctx) {
+    if (CurrentScopeHasFunc(name)) {
+        throw std::runtime_error("函数'" + name + "'在当前作用域重复定义");
+    }
+    scopes_.top().func_symbols[name] = {info, decl_ctx};
+}
+
+// 查找变量（从当前作用域向上遍历）
+bool SymbolTable::LookupVar(const std::string& name, VarInfo& out_info, void*& out_decl_ctx) const {
+    if (scopes_.empty()) {
+        return false;
+    }
+    auto temp_stack = scopes_;
+    while (!temp_stack.empty()) {
+        auto& scope = temp_stack.top();
+        auto it = scope.var_symbols.find(name);
+        if (it != scope.var_symbols.end()) {
+            out_info = it->second.first;
+            out_decl_ctx = it->second.second;
+            return true;
+        }
+        temp_stack.pop();
+    }
+    return false;
+}
+
+// 查找函数（从当前作用域向上遍历，通常函数在全局作用域）
+bool SymbolTable::LookupFunc(const std::string& name, FuncInfo& out_info, void*& out_decl_ctx) const {
+    if (scopes_.empty()) {
+        return false;
+    }
+    auto temp_stack = scopes_;
+    while (!temp_stack.empty()) {
+        auto& scope = temp_stack.top();
+        auto it = scope.func_symbols.find(name);
+        if (it != scope.func_symbols.end()) {
+            out_info = it->second.first;
+            out_decl_ctx = it->second.second;
+            return true;
+        }
+        temp_stack.pop();
+    }
+    return false;
+}
 
-void SymbolTable::Add(const std::string& name,
+// 检查当前作用域是否包含指定变量
-                      SysYParser::VarDefContext* decl) {
+bool SymbolTable::CurrentScopeHasVar(const std::string& name) const {
-  table_[name] = decl;
+    if (scopes_.empty()) {
+        return false;
+    }
+    return scopes_.top().var_symbols.count(name) > 0;
 }
 
-bool SymbolTable::Contains(const std::string& name) const {
+// 检查当前作用域是否包含指定函数
-  return table_.find(name) != table_.end();
+bool SymbolTable::CurrentScopeHasFunc(const std::string& name) const {
+    if (scopes_.empty()) {
+        return false;
+    }
+    return scopes_.top().func_symbols.count(name) > 0;
 }
 
-SysYParser::VarDefContext* SymbolTable::Lookup(const std::string& name) const {
+// 进入循环
-  auto it = table_.find(name);
+void SymbolTable::EnterLoop() { 
-  return it == table_.end() ? nullptr : it->second;
+    loop_depth_++; 
 }
+
+// 离开循环
+void SymbolTable::ExitLoop() { 
+    if (loop_depth_ > 0) loop_depth_--;
+}
+
+// 检查是否在循环内
+bool SymbolTable::InLoop() const { 
+    return loop_depth_ > 0; 
+}
+
+// 清空所有作用域和状态
+void SymbolTable::Clear() {
+    while (!scopes_.empty()) {
+        scopes_.pop();
+    }
+    loop_depth_ = 0;
+}
+
+// 获取当前作用域中所有变量名
+std::vector<std::string> SymbolTable::GetCurrentScopeVarNames() const {
+    std::vector<std::string> names;
+    if (!scopes_.empty()) {
+        for (const auto& pair : scopes_.top().var_symbols) {
+            names.push_back(pair.first);
+        }
+    }
+    return names;
+}
+
+// 获取当前作用域中所有函数名
+std::vector<std::string> SymbolTable::GetCurrentScopeFuncNames() const {
+    std::vector<std::string> names;
+    if (!scopes_.empty()) {
+        for (const auto& pair : scopes_.top().func_symbols) {
+            names.push_back(pair.first);
+        }
+    }
+    return names;
+}
+
+// 调试：打印符号表内容
+void SymbolTable::Dump() const {
+    std::cout << "符号表内容 (作用域深度: " << scopes_.size() << "):\n";
+    int scope_idx = 0;
+    auto temp_stack = scopes_;
+    
+    while (!temp_stack.empty()) {
+        std::cout << "\n作用域 " << scope_idx++ << ":\n";
+        auto& scope = temp_stack.top();
+        
+        std::cout << "  变量:\n";
+        for (const auto& var_pair : scope.var_symbols) {
+            const VarInfo& info = var_pair.second.first;
+            std::cout << "    " << var_pair.first << ": "
+                      << SymbolTypeToString(info.type)
+                      << (info.is_const ? " (const)" : "")
+                      << (info.IsArray() ? " [数组]" : "")
+                      << "\n";
+        }
+        
+        std::cout << "  函数:\n";
+        for (const auto& func_pair : scope.func_symbols) {
+            const FuncInfo& info = func_pair.second.first;
+            std::cout << "    " << func_pair.first << ": "
+                      << SymbolTypeToString(info.ret_type) << " ("
+                      << info.param_types.size() << " 个参数)\n";
+        }
+        
+        temp_stack.pop();
+    }
+}

sylib/sylib.c

@@ -2,3 +2,42 @@
 // - 按实验/评测规范提供 I/O 等函数实现
 // - 与编译器生成的目标代码链接，支撑运行时行为
 
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+int getint() { int v; scanf("%d", &v); return v; }
+int getch()  { return getchar(); }
+void putint(int v) { printf("%d", v); }
+void putch(int c)  { putchar(c); }
+float getfloat() { float v; scanf("%f", &v); return v; }
+void putfloat(float v) { printf("%a", v); }
+
+int getarray(int* a) {
+  int n; scanf("%d", &n);
+  for (int i = 0; i < n; i++) scanf("%d", &a[i]);
+  return n;
+}
+int getfarray(float* a) {
+  int n; scanf("%d", &n);
+  for (int i = 0; i < n; i++) scanf("%f", &a[i]);
+  return n;
+}
+void putarray(int n, int* a) {
+  printf("%d:", n);
+  for (int i = 0; i < n; i++) printf(" %d", a[i]);
+  printf("\n");
+}
+void putfarray(int n, float* a) {
+  printf("%d:", n);
+  for (int i = 0; i < n; i++) printf(" %a", a[i]);
+  printf("\n");
+}
+
+static struct timespec _t0;
+void starttime(int l) { (void)l; clock_gettime(CLOCK_MONOTONIC, &_t0); }
+void stoptime(int l) {
+  struct timespec t1; clock_gettime(CLOCK_MONOTONIC, &t1);
+  fprintf(stderr, "Timer@%d: %ldms\n", l,
+          (t1.tv_sec-_t0.tv_sec)*1000+(t1.tv_nsec-_t0.tv_nsec)/1000000);
+}

sylib/sylib.h

@@ -2,3 +2,22 @@
 // - 声明运行库函数原型（供编译器生成 call 或链接阶段引用）
 // - 与 sylib.c 配套，按规范逐步补齐声明
 
+#pragma once
+
+int getint();
+int getch();
+void putint(int v);
+void putch(int c);
+
+float getfloat();
+void putfloat(float v);
+
+int getarray(int* a);
+void putarray(int n, int* a);
+
+int getfarray(float* a);
+void putfarray(int n, float* a);
+
+void starttime(int l);
+void stoptime(int l);
+