1750 lines
70 KiB
C++
1750 lines
70 KiB
C++
// SysYIRGenerator.cpp
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// TODO：类型转换及其检查
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// TODO：sysy库函数处理
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// TODO：数组处理
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// TODO：对while、continue、break的测试
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#include "IR.h"
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#include <any>
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#include <memory>
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#include <iterator>
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#include <sstream>
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#include <string>
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#include <vector>
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#include "SysYIRGenerator.h"
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using namespace std;
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namespace sysy {
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Type* SysYIRGenerator::buildArrayType(Type* baseType, const std::vector<Value*>& dims){
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Type* currentType = baseType;
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// 从最内层维度开始构建 ArrayType
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// 例如对于 int arr[2][3]，先处理 [3]，再处理 [2]
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// 注意：SysY 的 dims 是从最外层到最内层，所以我们需要反向迭代
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// 或者调整逻辑，使得从内到外构建 ArrayType
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// 假设 dims 列表是 [dim1, dim2, dim3...] (例如 [2, 3] for int[2][3])
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// 我们需要从最内层维度开始向外构建 ArrayType
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for (int i = dims.size() - 1; i >= 0; --i) {
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// 维度大小必须是常量，否则无法构建 ArrayType
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ConstantInteger* constDim = dynamic_cast<ConstantInteger*>(dims[i]);
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if (constDim == nullptr) {
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// 如果维度不是常量，可能需要特殊处理，例如将其视为指针
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// 对于函数参数 int arr[] 这种，第一个维度可以为未知
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// 在这里，我们假设所有声明的数组维度都是常量
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assert(false && "Array dimension must be a constant integer!");
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return nullptr;
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}
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unsigned dimSize = constDim->getInt();
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currentType = Type::getArrayType(currentType, dimSize);
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}
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return currentType;
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}
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// @brief: 获取 GEP 指令的地址
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// @param basePointer: GEP 的基指针，已经过适当的加载/处理，类型为 LLVM IR 中的指针类型。
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// 例如，对于局部数组，它是 AllocaInst；对于参数数组，它是 LoadInst 的结果。
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// @param indices: 已经包含了所有必要的偏移索引 (包括可能的初始 0 索引，由 visitLValue 准备)。
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// @return: 计算得到的地址值 (也是一个指针类型)
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Value* SysYIRGenerator::getGEPAddressInst(Value* basePointer, const std::vector<Value*>& indices) {
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// 检查 basePointer 是否为指针类型
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assert(basePointer->getType()->isPointer() && "Base pointer must be a pointer type!");
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// `indices` 向量现在由调用方（如 visitLValue, visitVarDecl, visitAssignStmt）负责完整准备，
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// 包括是否需要添加初始的 `0` 索引。
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// 所以这里直接将其传递给 `builder.createGetElementPtrInst`。
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return builder.createGetElementPtrInst(basePointer, indices);
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}
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/*
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* @brief: visit compUnit
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* @details:
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* compUnit: (globalDecl | funcDef)+;
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*/
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std::any SysYIRGenerator::visitCompUnit(SysYParser::CompUnitContext *ctx) {
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// create the IR module
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auto pModule = new Module();
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assert(pModule);
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module.reset(pModule);
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// SymbolTable::ModuleScope scope(symbols_table);
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Utils::initExternalFunction(pModule, &builder);
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pModule->enterNewScope();
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visitChildren(ctx);
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pModule->leaveScope();
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return pModule;
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}
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std::any SysYIRGenerator::visitGlobalConstDecl(SysYParser::GlobalConstDeclContext *ctx){
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auto constDecl = ctx->constDecl();
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Type* type = std::any_cast<Type *>(visitBType(constDecl->bType()));
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for (const auto &constDef : constDecl->constDef()) {
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std::vector<Value *> dims = {};
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std::string name = constDef->Ident()->getText();
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auto constExps = constDef->constExp();
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if (!constExps.empty()) {
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for (const auto &constExp : constExps) {
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dims.push_back(std::any_cast<Value *>(visitConstExp(constExp)));
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}
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}
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ArrayValueTree* root = std::any_cast<ArrayValueTree *>(constDef->constInitVal()->accept(this));
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ValueCounter values;
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Utils::tree2Array(type, root, dims, dims.size(), values, &builder);
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delete root;
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// 创建全局常量变量，并更新符号表
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Type* variableType = type;
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if (!dims.empty()) { // 如果有维度，说明是数组
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variableType = buildArrayType(type, dims); // 构建完整的 ArrayType
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}
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module->createConstVar(name, Type::getPointerType(variableType), values);
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}
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return std::any();
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}
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std::any SysYIRGenerator::visitGlobalVarDecl(SysYParser::GlobalVarDeclContext *ctx) {
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auto varDecl = ctx->varDecl();
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Type* type = std::any_cast<Type *>(visitBType(varDecl->bType()));
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for (const auto &varDef : varDecl->varDef()) {
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std::vector<Value *> dims = {};
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std::string name = varDef->Ident()->getText();
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auto constExps = varDef->constExp();
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if (!constExps.empty()) {
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for (const auto &constExp : constExps) {
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dims.push_back(std::any_cast<Value *>(visitConstExp(constExp)));
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}
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}
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ValueCounter values = {};
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if (varDef->initVal() != nullptr) {
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ArrayValueTree* root = std::any_cast<ArrayValueTree *>(varDef->initVal()->accept(this));
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Utils::tree2Array(type, root, dims, dims.size(), values, &builder);
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delete root;
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}
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// 创建全局变量，并更新符号表
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Type* variableType = type;
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if (!dims.empty()) { // 如果有维度，说明是数组
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variableType = buildArrayType(type, dims); // 构建完整的 ArrayType
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}
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module->createGlobalValue(name, Type::getPointerType(variableType), values);
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}
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return std::any();
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}
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std::any SysYIRGenerator::visitConstDecl(SysYParser::ConstDeclContext *ctx) {
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Type *type = std::any_cast<Type *>(visitBType(ctx->bType()));
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for (const auto constDef : ctx->constDef()) {
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std::vector<Value *> dims = {};
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std::string name = constDef->Ident()->getText();
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auto constExps = constDef->constExp();
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if (!constExps.empty()) {
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for (const auto constExp : constExps) {
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dims.push_back(std::any_cast<Value *>(visitConstExp(constExp)));
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}
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}
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Type *variableType = type;
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if (!dims.empty()) {
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variableType = buildArrayType(type, dims); // 构建完整的 ArrayType
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}
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// 显式地为局部常量在栈上分配空间
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// alloca 的类型将是指针指向常量类型，例如 `int*` 或 `int[2][3]*`
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AllocaInst *alloca = builder.createAllocaInst(Type::getPointerType(variableType), name);
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ArrayValueTree *root = std::any_cast<ArrayValueTree *>(constDef->constInitVal()->accept(this));
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ValueCounter values;
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Utils::tree2Array(type, root, dims, dims.size(), values, &builder);
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delete root;
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// 根据维度信息进行 store 初始化
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if (dims.empty()) { // 标量常量初始化
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// 局部常量必须有初始值，且通常是单个值
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if (!values.getValues().empty()) {
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builder.createStoreInst(values.getValue(0), alloca);
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} else {
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// 错误处理：局部标量常量缺少初始化值
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// 或者可以考虑默认初始化为0，但这通常不符合常量的语义
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assert(false && "Local scalar constant must have an initialization value!");
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return std::any(); // 直接返回，避免继续执行
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}
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} else { // 数组常量初始化
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const std::vector<sysy::Value *> &counterValues = values.getValues();
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const std::vector<unsigned> &counterNumbers = values.getNumbers();
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int numElements = 1;
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std::vector<int> dimSizes;
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for (Value *dimVal : dims) {
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if (ConstantInteger *constInt = dynamic_cast<ConstantInteger *>(dimVal)) {
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int dimSize = constInt->getInt();
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numElements *= dimSize;
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dimSizes.push_back(dimSize);
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}
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// TODO else 错误处理：数组维度必须是常量（对于静态分配）
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else {
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assert(false && "Array dimension must be a constant integer!");
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return std::any(); // 直接返回，避免继续执行
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}
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}
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unsigned int elementSizeInBytes = type->getSize();
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unsigned int totalSizeInBytes = numElements * elementSizeInBytes;
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// 检查是否所有初始化值都是零
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bool allValuesAreZero = false;
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if (counterValues.empty()) { // 如果没有提供初始化值，通常视为全零初始化
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allValuesAreZero = true;
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} else {
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allValuesAreZero = true;
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for (Value *val : counterValues) {
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if (ConstantInteger *constInt = dynamic_cast<ConstantInteger *>(val)) {
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if (constInt->getInt() != 0) {
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allValuesAreZero = false;
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break;
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}
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} else { // 如果不是常量整数，则不能确定是零
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allValuesAreZero = false;
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break;
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}
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}
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}
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if (allValuesAreZero) {
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builder.createMemsetInst(alloca, ConstantInteger::get(0), ConstantInteger::get(totalSizeInBytes),
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ConstantInteger::get(0));
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} else {
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int linearIndexOffset = 0; // 用于追踪当前处理的线性索引的偏移量
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for (int k = 0; k < counterValues.size(); ++k) {
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// 当前 Value 的值和重复次数
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Value *currentValue = counterValues[k];
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unsigned currentRepeatNum = counterNumbers[k];
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for (unsigned i = 0; i < currentRepeatNum; ++i) {
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std::vector<Value *> currentIndices;
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int tempLinearIndex = linearIndexOffset + i; // 使用偏移量和当前重复次数内的索引
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// 将线性索引转换为多维索引
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for (int dimIdx = dimSizes.size() - 1; dimIdx >= 0; --dimIdx) {
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currentIndices.insert(currentIndices.begin(),
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ConstantInteger::get(static_cast<int>(tempLinearIndex % dimSizes[dimIdx])));
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tempLinearIndex /= dimSizes[dimIdx];
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}
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// 对于局部数组，alloca 本身就是 GEP 的基指针。
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// GEP 的第一个索引必须是 0，用于“步过”整个数组。
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std::vector<Value *> gepIndicesForInit;
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gepIndicesForInit.push_back(ConstantInteger::get(0));
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gepIndicesForInit.insert(gepIndicesForInit.end(), currentIndices.begin(), currentIndices.end());
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// 计算元素的地址
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Value *elementAddress = getGEPAddressInst(alloca, gepIndicesForInit);
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// 生成 store 指令
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builder.createStoreInst(currentValue, elementAddress);
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}
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// 更新线性索引偏移量，以便下一次迭代从正确的位置开始
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linearIndexOffset += currentRepeatNum;
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}
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}
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}
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// 更新符号表，将常量名称与 AllocaInst 关联起来
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module->addVariable(name, alloca);
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}
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return std::any();
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}
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std::any SysYIRGenerator::visitVarDecl(SysYParser::VarDeclContext *ctx) {
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Type* type = std::any_cast<Type *>(visitBType(ctx->bType()));
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for (const auto varDef : ctx->varDef()) {
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std::vector<Value *> dims = {};
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std::string name = varDef->Ident()->getText();
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auto constExps = varDef->constExp();
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if (!constExps.empty()) {
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for (const auto &constExp : constExps) {
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dims.push_back(std::any_cast<Value *>(visitConstExp(constExp)));
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}
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}
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Type* variableType = type;
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if (!dims.empty()) { // 如果有维度，说明是数组
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variableType = buildArrayType(type, dims); // 构建完整的 ArrayType
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}
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// 对于数组，alloca 的类型将是指针指向数组类型，例如 `int[2][3]*`
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// 对于标量，alloca 的类型将是指针指向标量类型，例如 `int*`
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AllocaInst* alloca =
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builder.createAllocaInst(Type::getPointerType(variableType), name);
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if (varDef->initVal() != nullptr) {
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ValueCounter values;
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ArrayValueTree* root = std::any_cast<ArrayValueTree *>(varDef->initVal()->accept(this));
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Utils::tree2Array(type, root, dims, dims.size(), values, &builder);
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delete root;
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if (dims.empty()) { // 标量变量初始化
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builder.createStoreInst(values.getValue(0), alloca);
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} else { // 数组变量初始化
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const std::vector<sysy::Value *> &counterValues = values.getValues();
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const std::vector<unsigned> &counterNumbers = values.getNumbers();
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int numElements = 1;
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std::vector<int> dimSizes;
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for (Value *dimVal : dims) {
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if (ConstantInteger *constInt = dynamic_cast<ConstantInteger *>(dimVal)) {
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int dimSize = constInt->getInt();
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numElements *= dimSize;
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dimSizes.push_back(dimSize);
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}
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// TODO else 错误处理：数组维度必须是常量（对于静态分配）
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}
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unsigned int elementSizeInBytes = type->getSize();
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unsigned int totalSizeInBytes = numElements * elementSizeInBytes;
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bool allValuesAreZero = false;
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if (counterValues.empty()) {
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allValuesAreZero = true;
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}
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else {
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allValuesAreZero = true;
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for (Value *val : counterValues){
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if (ConstantInteger *constInt = dynamic_cast<ConstantInteger *>(val)){
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if (constInt->getInt() != 0){
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allValuesAreZero = false;
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break;
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}
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}
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else{
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allValuesAreZero = false;
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break;
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}
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}
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}
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if (allValuesAreZero) {
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builder.createMemsetInst(
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alloca,
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ConstantInteger::get(0),
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ConstantInteger::get(totalSizeInBytes),
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ConstantInteger::get(0));
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}
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else {
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int linearIndexOffset = 0; // 用于追踪当前处理的线性索引的偏移量
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for (int k = 0; k < counterValues.size(); ++k) {
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// 当前 Value 的值和重复次数
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Value* currentValue = counterValues[k];
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unsigned currentRepeatNum = counterNumbers[k];
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for (unsigned i = 0; i < currentRepeatNum; ++i) {
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std::vector<Value *> currentIndices;
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int tempLinearIndex = linearIndexOffset + i; // 使用偏移量和当前重复次数内的索引
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// 将线性索引转换为多维索引
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for (int dimIdx = dimSizes.size() - 1; dimIdx >= 0; --dimIdx) {
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currentIndices.insert(currentIndices.begin(),
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ConstantInteger::get(static_cast<int>(tempLinearIndex % dimSizes[dimIdx])));
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tempLinearIndex /= dimSizes[dimIdx];
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}
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// 对于局部数组，alloca 本身就是 GEP 的基指针。
|
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// GEP 的第一个索引必须是 0，用于“步过”整个数组。
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std::vector<Value*> gepIndicesForInit;
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gepIndicesForInit.push_back(ConstantInteger::get(0));
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gepIndicesForInit.insert(gepIndicesForInit.end(), currentIndices.begin(), currentIndices.end());
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// 计算元素的地址
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Value* elementAddress = getGEPAddressInst(alloca, gepIndicesForInit);
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// 生成 store 指令
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builder.createStoreInst(currentValue, elementAddress);
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}
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// 更新线性索引偏移量，以便下一次迭代从正确的位置开始
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linearIndexOffset += currentRepeatNum;
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}
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}
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}
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}
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else { // 如果没有显式初始化值，默认对数组进行零初始化
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if (!dims.empty()) { // 只有数组才需要默认的零初始化
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int numElements = 1;
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for (Value *dimVal : dims) {
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if (ConstantInteger *constInt = dynamic_cast<ConstantInteger *>(dimVal)) {
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numElements *= constInt->getInt();
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}
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}
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unsigned int elementSizeInBytes = type->getSize();
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unsigned int totalSizeInBytes = numElements * elementSizeInBytes;
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builder.createMemsetInst(
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alloca,
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ConstantInteger::get(0),
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ConstantInteger::get(totalSizeInBytes),
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ConstantInteger::get(0)
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);
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}
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}
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module->addVariable(name, alloca);
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}
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return std::any();
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}
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std::any SysYIRGenerator::visitBType(SysYParser::BTypeContext *ctx) {
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return ctx->INT() != nullptr ? Type::getIntType() : Type::getFloatType();
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}
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std::any SysYIRGenerator::visitScalarInitValue(SysYParser::ScalarInitValueContext *ctx) {
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Value* value = std::any_cast<Value *>(visitExp(ctx->exp()));
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ArrayValueTree* result = new ArrayValueTree();
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result->setValue(value);
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return result;
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}
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std::any SysYIRGenerator::visitArrayInitValue(SysYParser::ArrayInitValueContext *ctx) {
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std::vector<ArrayValueTree *> children;
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for (const auto &initVal : ctx->initVal())
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children.push_back(std::any_cast<ArrayValueTree *>(initVal->accept(this)));
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ArrayValueTree* result = new ArrayValueTree();
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result->addChildren(children);
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return result;
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}
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std::any SysYIRGenerator::visitConstScalarInitValue(SysYParser::ConstScalarInitValueContext *ctx) {
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Value* value = std::any_cast<Value *>(visitConstExp(ctx->constExp()));
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ArrayValueTree* result = new ArrayValueTree();
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result->setValue(value);
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return result;
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}
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std::any SysYIRGenerator::visitConstArrayInitValue(SysYParser::ConstArrayInitValueContext *ctx) {
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std::vector<ArrayValueTree *> children;
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for (const auto &constInitVal : ctx->constInitVal())
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||
children.push_back(std::any_cast<ArrayValueTree *>(constInitVal->accept(this)));
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||
ArrayValueTree* result = new ArrayValueTree();
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||
result->addChildren(children);
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return result;
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}
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||
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||
std::any SysYIRGenerator::visitFuncType(SysYParser::FuncTypeContext *ctx) {
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||
if (ctx->INT() != nullptr)
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||
return Type::getIntType();
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||
if (ctx->FLOAT() != nullptr)
|
||
return Type::getFloatType();
|
||
return Type::getVoidType();
|
||
}
|
||
|
||
std::any SysYIRGenerator::visitFuncDef(SysYParser::FuncDefContext *ctx){
|
||
// 更新作用域
|
||
module->enterNewScope();
|
||
|
||
auto name = ctx->Ident()->getText();
|
||
std::vector<Type *> paramActualTypes;
|
||
std::vector<std::string> paramNames;
|
||
std::vector<std::vector<Value *>> paramDims;
|
||
|
||
if (ctx->funcFParams() != nullptr) {
|
||
auto params = ctx->funcFParams()->funcFParam();
|
||
for (const auto ¶m : params) {
|
||
Type* baseBType = std::any_cast<Type *>(visitBType(param->bType()));
|
||
std::string paramName = param->Ident()->getText();
|
||
|
||
// 用于收集当前参数的维度信息（如果它是数组）
|
||
std::vector<Value *> currentParamDims;
|
||
if (!param->LBRACK().empty()) { // 如果参数声明中有方括号，说明是数组
|
||
// SysY 数组参数的第一个维度可以是未知的（例如 int arr[] 或 int arr[][10]）
|
||
// 这里的 ConstantInteger::get(-1) 表示未知维度，但对于 LLVM 类型构建，我们主要关注已知维度
|
||
currentParamDims.push_back(ConstantInteger::get(-1)); // 标记第一个维度为未知
|
||
for (const auto &exp : param->exp()) {
|
||
// 访问表达式以获取维度大小，这些维度必须是常量
|
||
Value* dimVal = std::any_cast<Value *>(visitExp(exp));
|
||
// 确保维度是常量整数，否则 buildArrayType 会断言失败
|
||
assert(dynamic_cast<ConstantInteger*>(dimVal) && "Array dimension in parameter must be a constant integer!");
|
||
currentParamDims.push_back(dimVal);
|
||
}
|
||
}
|
||
|
||
// 根据解析出的信息，确定参数在 LLVM IR 中的实际类型
|
||
Type* actualParamType;
|
||
if (currentParamDims.empty()) { // 情况1：标量参数 (e.g., int x)
|
||
actualParamType = baseBType; // 实际类型就是基本类型
|
||
} else { // 情况2&3：数组参数 (e.g., int arr[] 或 int arr[][10])
|
||
// 数组参数在函数传递时会退化为指针。
|
||
// 这个指针指向的类型是除第一维外，由后续维度构成的数组类型。
|
||
|
||
// 从 currentParamDims 中移除第一个标记未知维度的 -1
|
||
std::vector<Value*> fixedDimsForTypeBuilding;
|
||
if (currentParamDims.size() > 1) { // 如果有固定维度 (e.g., int arr[][10])
|
||
// 复制除第一个 -1 之外的所有维度
|
||
fixedDimsForTypeBuilding.assign(currentParamDims.begin() + 1, currentParamDims.end());
|
||
}
|
||
|
||
Type* pointedToArrayType = baseBType; // 从基本类型开始构建
|
||
// 从最内层维度向外层构建数组类型
|
||
// buildArrayType 期望 dims 是从最外层到最内层，但它内部反向迭代，所以这里直接传入
|
||
// 例如，对于 int arr[][10]，fixedDimsForTypeBuilding 包含 [10]，构建出 [10 x i32]
|
||
if (!fixedDimsForTypeBuilding.empty()) {
|
||
pointedToArrayType = buildArrayType(baseBType, fixedDimsForTypeBuilding);
|
||
}
|
||
|
||
// 实际参数类型是指向这个构建好的数组类型的指针
|
||
actualParamType = Type::getPointerType(pointedToArrayType); // e.g., i32* 或 [10 x i32]*
|
||
}
|
||
|
||
paramActualTypes.push_back(actualParamType); // 存储参数的实际 LLVM IR 类型
|
||
paramNames.push_back(paramName); // 存储参数名称
|
||
|
||
}
|
||
}
|
||
|
||
Type* returnType = std::any_cast<Type *>(visitFuncType(ctx->funcType()));
|
||
Type* funcType = Type::getFunctionType(returnType, paramActualTypes);
|
||
Function* function = module->createFunction(name, funcType);
|
||
BasicBlock* entry = function->getEntryBlock();
|
||
builder.setPosition(entry, entry->end());
|
||
|
||
for(int i = 0; i < paramActualTypes.size(); ++i) {
|
||
Argument* arg = new Argument(paramActualTypes[i], function, i, paramNames[i]);
|
||
function->insertArgument(arg);
|
||
|
||
}
|
||
|
||
auto funcArgs = function->getArguments();
|
||
std::vector<AllocaInst *> allocas;
|
||
for (int i = 0; i < paramActualTypes.size(); ++i) {
|
||
AllocaInst *alloca = builder.createAllocaInst(Type::getPointerType(paramActualTypes[i]), paramNames[i]);
|
||
allocas.push_back(alloca);
|
||
module->addVariable(paramNames[i], alloca);
|
||
}
|
||
|
||
for(int i = 0; i < paramActualTypes.size(); ++i) {
|
||
Value *argValue = funcArgs[i];
|
||
builder.createStoreInst(argValue, allocas[i]);
|
||
}
|
||
|
||
// 在处理函数体之前，创建一个新的基本块作为函数体的实际入口
|
||
// 这样 entryBB 就可以在完成初始化后跳转到这里
|
||
BasicBlock* funcBodyEntry = function->addBasicBlock("funcBodyEntry_" + name);
|
||
|
||
// 从 entryBB 无条件跳转到 funcBodyEntry
|
||
builder.createUncondBrInst(funcBodyEntry);
|
||
builder.setPosition(funcBodyEntry,funcBodyEntry->end()); // 将插入点设置到 funcBodyEntry
|
||
|
||
for (auto item : ctx->blockStmt()->blockItem()) {
|
||
visitBlockItem(item);
|
||
}
|
||
|
||
// 如果函数没有显式的返回语句，且返回类型不是 void，则需要添加一个默认的返回值
|
||
ReturnInst* retinst = nullptr;
|
||
retinst = dynamic_cast<ReturnInst*>(builder.getBasicBlock()->terminator()->get());
|
||
|
||
if (!retinst) {
|
||
if (returnType->isVoid()) {
|
||
builder.createReturnInst();
|
||
} else if (returnType->isInt()) {
|
||
builder.createReturnInst(ConstantInteger::get(0)); // 默认返回 0
|
||
} else if (returnType->isFloat()) {
|
||
builder.createReturnInst(ConstantFloating::get(0.0f)); // 默认返回 0.0f
|
||
} else {
|
||
assert(false && "Function with no explicit return and non-void type should return a value.");
|
||
}
|
||
}
|
||
|
||
module->leaveScope();
|
||
|
||
return std::any();
|
||
}
|
||
|
||
std::any SysYIRGenerator::visitBlockStmt(SysYParser::BlockStmtContext *ctx) {
|
||
module->enterNewScope();
|
||
for (auto item : ctx->blockItem())
|
||
visitBlockItem(item);
|
||
module->leaveScope();
|
||
return 0;
|
||
}
|
||
|
||
std::any SysYIRGenerator::visitAssignStmt(SysYParser::AssignStmtContext *ctx) {
|
||
auto lVal = ctx->lValue();
|
||
std::string name = lVal->Ident()->getText();
|
||
Value* LValue = nullptr;
|
||
Value* variable = module->getVariable(name); // 左值
|
||
|
||
vector<Value *> indices;
|
||
if (lVal->exp().size() > 0) {
|
||
// 如果有下标，访问表达式获取下标值
|
||
for (const auto &exp : lVal->exp()) {
|
||
Value* indexValue = std::any_cast<Value *>(visitExp(exp));
|
||
indices.push_back(indexValue);
|
||
}
|
||
}
|
||
if (indices.empty()) {
|
||
// variable 本身就是指向标量的指针 (e.g., int* %a)
|
||
if (dynamic_cast<AllocaInst*>(variable) || dynamic_cast<GlobalValue*>(variable)) {
|
||
LValue = variable;
|
||
}
|
||
}
|
||
else {
|
||
// 对于数组或多维数组的左值处理
|
||
// 需要获取 GEP 地址
|
||
Value* gepBasePointer = nullptr;
|
||
std::vector<Value*> gepIndices;
|
||
if (AllocaInst *alloc = dynamic_cast<AllocaInst *>(variable)) {
|
||
Type* allocatedType = alloc->getType()->as<PointerType>()->getBaseType();
|
||
if (allocatedType->isPointer()) {
|
||
gepBasePointer = builder.createLoadInst(alloc);
|
||
gepIndices = indices;
|
||
} else {
|
||
gepBasePointer = alloc;
|
||
gepIndices.push_back(ConstantInteger::get(0));
|
||
gepIndices.insert(gepIndices.end(), indices.begin(), indices.end());
|
||
}
|
||
} else if (GlobalValue *glob = dynamic_cast<GlobalValue *>(variable)) {
|
||
// 情况 B: 全局变量 (GlobalValue)
|
||
gepBasePointer = glob;
|
||
gepIndices.push_back(ConstantInteger::get(0));
|
||
gepIndices.insert(gepIndices.end(), indices.begin(), indices.end());
|
||
} else if (ConstantVariable *constV = dynamic_cast<ConstantVariable *>(variable)) {
|
||
gepBasePointer = constV;
|
||
gepIndices.push_back(ConstantInteger::get(0));
|
||
gepIndices.insert(gepIndices.end(), indices.begin(), indices.end());
|
||
}
|
||
// 左值为地址
|
||
LValue = getGEPAddressInst(gepBasePointer, gepIndices);
|
||
}
|
||
|
||
Value* RValue = std::any_cast<Value *>(visitExp(ctx->exp())); // 右值
|
||
|
||
// 先推断 LValue 的类型
|
||
// 如果 LValue 是指向数组的指针，则需要根据 indices 获取正确的类型
|
||
// 如果 LValue 是标量，则直接使用其类型
|
||
// 注意：LValue 的类型可能是指向数组的指针 (e.g., int(*)[3]) 或者指向标量的指针 (e.g., int*) 也能推断
|
||
Type* LType = builder.getIndexedType(variable->getType(), indices);
|
||
Type* RType = RValue->getType();
|
||
|
||
if (LType != RType) {
|
||
ConstantValue *constValue = dynamic_cast<ConstantValue *>(RValue);
|
||
if (constValue != nullptr) {
|
||
if (LType == Type::getFloatType()) {
|
||
if(dynamic_cast<ConstantInteger *>(constValue)) {
|
||
// 如果是整型常量，转换为浮点型
|
||
RValue = ConstantFloating::get(static_cast<float>(constValue->getInt()));
|
||
} else if (dynamic_cast<ConstantFloating *>(constValue)) {
|
||
// 如果是浮点型常量，直接使用
|
||
RValue = ConstantFloating::get(static_cast<float>(constValue->getFloat()));
|
||
}
|
||
} else { // 假设如果不是浮点型，就是整型
|
||
if(dynamic_cast<ConstantFloating *>(constValue)) {
|
||
// 如果是浮点型常量，转换为整型
|
||
RValue = ConstantInteger::get(static_cast<int>(constValue->getFloat()));
|
||
} else if (dynamic_cast<ConstantInteger *>(constValue)) {
|
||
// 如果是整型常量，直接使用
|
||
RValue = ConstantInteger::get(static_cast<int>(constValue->getInt()));
|
||
|
||
}
|
||
}
|
||
} else {
|
||
if (LType == Type::getFloatType()) {
|
||
RValue = builder.createIToFInst(RValue);
|
||
} else { // 假设如果不是浮点型，就是整型
|
||
RValue = builder.createFtoIInst(RValue);
|
||
}
|
||
}
|
||
}
|
||
|
||
builder.createStoreInst(RValue, LValue);
|
||
|
||
return std::any();
|
||
}
|
||
|
||
|
||
std::any SysYIRGenerator::visitIfStmt(SysYParser::IfStmtContext *ctx) {
|
||
// labels string stream
|
||
|
||
std::stringstream labelstring;
|
||
Function * function = builder.getBasicBlock()->getParent();
|
||
|
||
BasicBlock* thenBlock = new BasicBlock(function);
|
||
BasicBlock* exitBlock = new BasicBlock(function);
|
||
|
||
if (ctx->stmt().size() > 1) {
|
||
BasicBlock* elseBlock = new BasicBlock(function);
|
||
|
||
builder.pushTrueBlock(thenBlock);
|
||
builder.pushFalseBlock(elseBlock);
|
||
// 访问条件表达式
|
||
visitCond(ctx->cond());
|
||
builder.popTrueBlock();
|
||
builder.popFalseBlock();
|
||
|
||
labelstring << "if_then.L" << builder.getLabelIndex();
|
||
thenBlock->setName(labelstring.str());
|
||
labelstring.str("");
|
||
function->addBasicBlock(thenBlock);
|
||
builder.setPosition(thenBlock, thenBlock->end());
|
||
|
||
auto block = dynamic_cast<SysYParser::BlockStmtContext *>(ctx->stmt(0));
|
||
// 如果是块语句，直接访问
|
||
// 否则访问语句
|
||
if (block != nullptr) {
|
||
visitBlockStmt(block);
|
||
} else {
|
||
module->enterNewScope();
|
||
ctx->stmt(0)->accept(this);
|
||
module->leaveScope();
|
||
}
|
||
builder.createUncondBrInst(exitBlock);
|
||
BasicBlock::conectBlocks(builder.getBasicBlock(), exitBlock);
|
||
|
||
labelstring << "if_else.L" << builder.getLabelIndex();
|
||
elseBlock->setName(labelstring.str());
|
||
labelstring.str("");
|
||
function->addBasicBlock(elseBlock);
|
||
builder.setPosition(elseBlock, elseBlock->end());
|
||
|
||
block = dynamic_cast<SysYParser::BlockStmtContext *>(ctx->stmt(1));
|
||
if (block != nullptr) {
|
||
visitBlockStmt(block);
|
||
} else {
|
||
module->enterNewScope();
|
||
ctx->stmt(1)->accept(this);
|
||
module->leaveScope();
|
||
}
|
||
builder.createUncondBrInst(exitBlock);
|
||
BasicBlock::conectBlocks(builder.getBasicBlock(), exitBlock);
|
||
|
||
labelstring << "if_exit.L" << builder.getLabelIndex();
|
||
exitBlock->setName(labelstring.str());
|
||
labelstring.str("");
|
||
function->addBasicBlock(exitBlock);
|
||
builder.setPosition(exitBlock, exitBlock->end());
|
||
|
||
} else {
|
||
builder.pushTrueBlock(thenBlock);
|
||
builder.pushFalseBlock(exitBlock);
|
||
visitCond(ctx->cond());
|
||
builder.popTrueBlock();
|
||
builder.popFalseBlock();
|
||
|
||
labelstring << "if_then.L" << builder.getLabelIndex();
|
||
thenBlock->setName(labelstring.str());
|
||
labelstring.str("");
|
||
function->addBasicBlock(thenBlock);
|
||
builder.setPosition(thenBlock, thenBlock->end());
|
||
|
||
auto block = dynamic_cast<SysYParser::BlockStmtContext *>(ctx->stmt(0));
|
||
if (block != nullptr) {
|
||
visitBlockStmt(block);
|
||
} else {
|
||
module->enterNewScope();
|
||
ctx->stmt(0)->accept(this);
|
||
module->leaveScope();
|
||
}
|
||
builder.createUncondBrInst(exitBlock);
|
||
BasicBlock::conectBlocks(builder.getBasicBlock(), exitBlock);
|
||
|
||
labelstring << "if_exit.L" << builder.getLabelIndex();
|
||
exitBlock->setName(labelstring.str());
|
||
labelstring.str("");
|
||
function->addBasicBlock(exitBlock);
|
||
builder.setPosition(exitBlock, exitBlock->end());
|
||
}
|
||
return std::any();
|
||
}
|
||
|
||
std::any SysYIRGenerator::visitWhileStmt(SysYParser::WhileStmtContext *ctx) {
|
||
// while structure:
|
||
// curblock -> headBlock -> bodyBlock -> exitBlock
|
||
BasicBlock* curBlock = builder.getBasicBlock();
|
||
Function* function = builder.getBasicBlock()->getParent();
|
||
|
||
std::stringstream labelstring;
|
||
labelstring << "while_head.L" << builder.getLabelIndex();
|
||
BasicBlock *headBlock = function->addBasicBlock(labelstring.str());
|
||
labelstring.str("");
|
||
builder.createUncondBrInst(headBlock);
|
||
BasicBlock::conectBlocks(curBlock, headBlock);
|
||
builder.setPosition(headBlock, headBlock->end());
|
||
|
||
BasicBlock* bodyBlock = new BasicBlock(function);
|
||
BasicBlock* exitBlock = new BasicBlock(function);
|
||
|
||
builder.pushTrueBlock(bodyBlock);
|
||
builder.pushFalseBlock(exitBlock);
|
||
// 访问条件表达式
|
||
visitCond(ctx->cond());
|
||
builder.popTrueBlock();
|
||
builder.popFalseBlock();
|
||
|
||
labelstring << "while_body.L" << builder.getLabelIndex();
|
||
bodyBlock->setName(labelstring.str());
|
||
labelstring.str("");
|
||
function->addBasicBlock(bodyBlock);
|
||
builder.setPosition(bodyBlock, bodyBlock->end());
|
||
|
||
builder.pushBreakBlock(exitBlock);
|
||
builder.pushContinueBlock(headBlock);
|
||
|
||
auto block = dynamic_cast<SysYParser::BlockStmtContext *>(ctx->stmt());
|
||
|
||
if( block != nullptr) {
|
||
visitBlockStmt(block);
|
||
} else {
|
||
module->enterNewScope();
|
||
ctx->stmt()->accept(this);
|
||
module->leaveScope();
|
||
}
|
||
|
||
builder.createUncondBrInst(headBlock);
|
||
BasicBlock::conectBlocks(builder.getBasicBlock(), exitBlock);
|
||
builder.popBreakBlock();
|
||
builder.popContinueBlock();
|
||
|
||
labelstring << "while_exit.L" << builder.getLabelIndex();
|
||
exitBlock->setName(labelstring.str());
|
||
labelstring.str("");
|
||
function->addBasicBlock(exitBlock);
|
||
builder.setPosition(exitBlock, exitBlock->end());
|
||
|
||
return std::any();
|
||
}
|
||
|
||
std::any SysYIRGenerator::visitBreakStmt(SysYParser::BreakStmtContext *ctx) {
|
||
BasicBlock* breakBlock = builder.getBreakBlock();
|
||
builder.createUncondBrInst(breakBlock);
|
||
BasicBlock::conectBlocks(builder.getBasicBlock(), breakBlock);
|
||
return std::any();
|
||
}
|
||
|
||
std::any SysYIRGenerator::visitContinueStmt(SysYParser::ContinueStmtContext *ctx) {
|
||
BasicBlock* continueBlock = builder.getContinueBlock();
|
||
builder.createUncondBrInst(continueBlock);
|
||
BasicBlock::conectBlocks(builder.getBasicBlock(), continueBlock);
|
||
return std::any();
|
||
}
|
||
|
||
std::any SysYIRGenerator::visitReturnStmt(SysYParser::ReturnStmtContext *ctx) {
|
||
Value* returnValue = nullptr;
|
||
if (ctx->exp() != nullptr) {
|
||
returnValue = std::any_cast<Value *>(visitExp(ctx->exp()));
|
||
}
|
||
|
||
Type* funcType = builder.getBasicBlock()->getParent()->getReturnType();
|
||
if (returnValue != nullptr && funcType!= returnValue->getType()) {
|
||
ConstantValue * constValue = dynamic_cast<ConstantValue *>(returnValue);
|
||
if (constValue != nullptr) {
|
||
if (funcType == Type::getFloatType()) {
|
||
if(dynamic_cast<ConstantInteger *>(constValue)) {
|
||
// 如果是整型常量，转换为浮点型
|
||
returnValue = ConstantFloating::get(static_cast<float>(constValue->getInt()));
|
||
} else if (dynamic_cast<ConstantFloating *>(constValue)) {
|
||
// 如果是浮点型常量，直接使用
|
||
returnValue = ConstantFloating::get(static_cast<float>(constValue->getInt()));
|
||
}
|
||
} else {
|
||
if(dynamic_cast<ConstantFloating *>(constValue)) {
|
||
// 如果是浮点型常量，转换为整型
|
||
returnValue = ConstantInteger::get(static_cast<int>(constValue->getFloat()));
|
||
} else if (dynamic_cast<ConstantInteger *>(constValue)) {
|
||
// 如果是整型常量，直接使用
|
||
returnValue = ConstantInteger::get(static_cast<int>(constValue->getFloat()));
|
||
}
|
||
}
|
||
} else {
|
||
if (funcType == Type::getFloatType()) {
|
||
returnValue = builder.createIToFInst(returnValue);
|
||
} else {
|
||
returnValue = builder.createFtoIInst(returnValue);
|
||
}
|
||
}
|
||
}
|
||
builder.createReturnInst(returnValue);
|
||
|
||
return std::any();
|
||
}
|
||
|
||
|
||
// 辅助函数：计算给定类型中嵌套的数组维度数量
|
||
// 例如：
|
||
// - 对于 i32* 类型，它指向 i32，维度为 0。
|
||
// - 对于 [10 x i32]* 类型，它指向 [10 x i32]，维度为 1。
|
||
// - 对于 [20 x [10 x i32]]* 类型，它指向 [20 x [10 x i32]]，维度为 2。
|
||
unsigned SysYIRGenerator::countArrayDimensions(Type* type) {
|
||
unsigned dims = 0;
|
||
Type* currentType = type;
|
||
|
||
// 如果是指针类型，先获取它指向的基础类型
|
||
if (currentType->isPointer()) {
|
||
currentType = currentType->as<PointerType>()->getBaseType();
|
||
}
|
||
|
||
// 递归地计算数组的维度层数
|
||
while (currentType && currentType->isArray()) {
|
||
dims++;
|
||
currentType = currentType->as<ArrayType>()->getElementType();
|
||
}
|
||
return dims;
|
||
}
|
||
|
||
std::any SysYIRGenerator::visitLValue(SysYParser::LValueContext *ctx) {
|
||
std::string name = ctx->Ident()->getText();
|
||
Value* variable = module->getVariable(name);
|
||
|
||
Value* value = nullptr;
|
||
|
||
std::vector<Value *> dims;
|
||
for (const auto &exp : ctx->exp()) {
|
||
dims.push_back(std::any_cast<Value *>(visitExp(exp)));
|
||
}
|
||
|
||
// 1. 获取变量的声明维度数量
|
||
unsigned declaredNumDims = countArrayDimensions(variable->getType());
|
||
|
||
// 2. 处理常量变量 (ConstantVariable) 且所有索引都是常量的情况
|
||
ConstantVariable* constVar = dynamic_cast<ConstantVariable *>(variable);
|
||
if (constVar != nullptr) {
|
||
bool allIndicesConstant = true;
|
||
for (const auto &dim : dims) {
|
||
if (dynamic_cast<ConstantValue *>(dim) == nullptr) {
|
||
allIndicesConstant = false;
|
||
break;
|
||
}
|
||
}
|
||
if (allIndicesConstant) {
|
||
// 如果是常量变量且所有索引都是常量，直接通过 getByIndices 获取编译时值
|
||
// 这个方法会根据索引深度返回最终的标量值或指向子数组的指针 (作为 ConstantValue/Variable)
|
||
return constVar->getByIndices(dims);
|
||
}
|
||
}
|
||
|
||
// 3. 处理可变变量 (AllocaInst/GlobalValue) 或带非常量索引的常量变量
|
||
// 这里区分标量访问和数组元素/子数组访问
|
||
|
||
// 检查是否是访问标量变量本身（没有索引，且声明维度为0）
|
||
if (dims.empty() && declaredNumDims == 0) {
|
||
// 对于标量变量，直接加载其值。
|
||
// variable 本身就是指向标量的指针 (e.g., int* %a)
|
||
if (dynamic_cast<AllocaInst*>(variable) || dynamic_cast<GlobalValue*>(variable)) {
|
||
value = builder.createLoadInst(variable);
|
||
} else {
|
||
// 如果走到这里且不是AllocaInst/GlobalValue，但dims为空且declaredNumDims为0，
|
||
// 且又不是ConstantVariable (前面已处理)，则可能是错误情况。
|
||
assert(false && "Unhandled scalar variable type in LValue access.");
|
||
return static_cast<Value*>(nullptr);
|
||
}
|
||
} else {
|
||
// 访问数组元素或子数组（有索引，或变量本身是数组/多维指针）
|
||
Value* gepBasePointer = nullptr;
|
||
std::vector<Value*> gepIndices; // 准备传递给 getGEPAddressInst 的索引列表
|
||
// GEP 的基指针就是变量本身（它是一个指向内存的指针）
|
||
if (AllocaInst *alloc = dynamic_cast<AllocaInst *>(variable)) {
|
||
// 情况 A: 局部变量 (AllocaInst)
|
||
// 获取 AllocaInst 分配的内存的实际类型。
|
||
// 例如：对于 `int b[10][20];`，`allocatedType` 是 `[10 x [20 x i32]]`。
|
||
// 对于 `int b[][20]` 的函数参数，其 AllocaInst 存储的是一个指针，
|
||
// 此时 `allocatedType` 是 `[20 x i32]*`。
|
||
Type* allocatedType = alloc->getType()->as<PointerType>()->getBaseType();
|
||
|
||
if (allocatedType->isPointer()) {
|
||
// 如果 AllocaInst 分配的是一个指针类型 (例如，用于存储函数参数的指针，如 int b[][20] 中的 b)
|
||
// 即 `allocatedType` 是一个指向数组指针的指针 (e.g., [20 x i32]**)
|
||
// 那么 GEP 的基指针是加载这个指针变量的值。
|
||
gepBasePointer = builder.createLoadInst(alloc); // 加载出实际的指针值 (e.g., [20 x i32]*)
|
||
// 对于这种参数指针，用户提供的索引直接作用于它。不需要额外的 0。
|
||
gepIndices = dims;
|
||
} else {
|
||
// 如果 AllocaInst 分配的是实际的数组数据 (例如，int b[10][20] 中的 b)
|
||
// 那么 AllocaInst 本身就是 GEP 的基指针。
|
||
// 这里的 `alloc` 是指向数组的指针 (e.g., [10 x [20 x i32]]*)
|
||
gepBasePointer = alloc; // 类型是 [10 x [20 x i32]]*
|
||
// 对于这种完整的数组分配，GEP 的第一个索引必须是 0，用于“步过”整个数组。
|
||
gepIndices.push_back(ConstantInteger::get(0));
|
||
gepIndices.insert(gepIndices.end(), dims.begin(), dims.end());
|
||
}
|
||
} else if (GlobalValue *glob = dynamic_cast<GlobalValue *>(variable)) {
|
||
// 情况 B: 全局变量 (GlobalValue)
|
||
// GlobalValue 总是指向全局数据的指针。
|
||
gepBasePointer = glob; // 类型是 [61 x [67 x i32]]*
|
||
// 对于全局数组，GEP 的第一个索引必须是 0，用于“步过”整个数组。
|
||
gepIndices.push_back(ConstantInteger::get(0));
|
||
gepIndices.insert(gepIndices.end(), dims.begin(), dims.end());
|
||
} else if (ConstantVariable *constV = dynamic_cast<ConstantVariable *>(variable)) {
|
||
// 情况 C: 常量变量 (ConstantVariable)，如果它代表全局数组常量
|
||
// 假设 ConstantVariable 可以直接作为 GEP 的基指针。
|
||
gepBasePointer = constV;
|
||
// 对于常量数组，也需要 0 索引来“步过”整个数组。
|
||
// 这里可以进一步检查 constV->getType()->as<PointerType>()->getBaseType()->isArray()
|
||
// 但为了简洁，假设所有 ConstantVariable 作为 GEP 基指针时都需要此 0。
|
||
gepIndices.push_back(ConstantInteger::get(0));
|
||
gepIndices.insert(gepIndices.end(), dims.begin(), dims.end());
|
||
} else {
|
||
assert(false && "LValue variable type not supported for GEP base pointer.");
|
||
return static_cast<Value *>(nullptr);
|
||
}
|
||
|
||
// 现在调用 getGEPAddressInst，传入正确准备的基指针和索引列表
|
||
Value *targetAddress = getGEPAddressInst(gepBasePointer, gepIndices);
|
||
|
||
// 如果提供的索引数量少于声明的维度数量，则表示访问的是子数组，返回其地址
|
||
if (dims.size() < declaredNumDims) {
|
||
value = targetAddress;
|
||
} else {
|
||
// 否则，表示访问的是最终的标量元素，加载其值
|
||
// 假设 createLoadInst 接受 Value* pointer
|
||
value = builder.createLoadInst(targetAddress);
|
||
}
|
||
}
|
||
return value;
|
||
}
|
||
|
||
std::any SysYIRGenerator::visitPrimaryExp(SysYParser::PrimaryExpContext *ctx) {
|
||
if (ctx->exp() != nullptr)
|
||
return visitExp(ctx->exp());
|
||
if (ctx->lValue() != nullptr)
|
||
return visitLValue(ctx->lValue());
|
||
if (ctx->number() != nullptr)
|
||
return visitNumber(ctx->number());
|
||
if (ctx->string() != nullptr) {
|
||
cout << "String literal not supported in SysYIRGenerator." << endl;
|
||
}
|
||
return visitNumber(ctx->number());
|
||
}
|
||
|
||
std::any SysYIRGenerator::visitNumber(SysYParser::NumberContext *ctx) {
|
||
if (ctx->ILITERAL() != nullptr) {
|
||
int value = std::stol(ctx->ILITERAL()->getText(), nullptr, 0);
|
||
return static_cast<Value *>(ConstantInteger::get(value));
|
||
} else if (ctx->FLITERAL() != nullptr) {
|
||
float value = std::stof(ctx->FLITERAL()->getText());
|
||
return static_cast<Value *>(ConstantFloating::get(value));
|
||
}
|
||
throw std::runtime_error("Unknown number type.");
|
||
return std::any(); // 不会到达这里
|
||
}
|
||
|
||
std::any SysYIRGenerator::visitCall(SysYParser::CallContext *ctx) {
|
||
std::string funcName = ctx->Ident()->getText();
|
||
Function *function = module->getFunction(funcName);
|
||
if (function == nullptr) {
|
||
function = module->getExternalFunction(funcName);
|
||
if (function == nullptr) {
|
||
std::cout << "The function " << funcName << " no defined." << std::endl;
|
||
assert(function);
|
||
}
|
||
}
|
||
|
||
std::vector<Value *> args = {};
|
||
if (funcName == "starttime" || funcName == "stoptime") {
|
||
args.emplace_back(
|
||
ConstantInteger::get(static_cast<int>(ctx->getStart()->getLine())));
|
||
} else {
|
||
if (ctx->funcRParams() != nullptr) {
|
||
args = std::any_cast<std::vector<Value *>>(visitFuncRParams(ctx->funcRParams()));
|
||
}
|
||
|
||
// 获取形参列表。`getArguments()` 返回的是 `Argument*` 的集合，
|
||
// 每个 `Argument` 代表一个函数形参，其 `getType()` 就是指向形参的类型的指针类型。
|
||
auto formalParams = function->getArguments();
|
||
|
||
// 检查实参和形参数量是否匹配。
|
||
if (args.size() != formalParams.size()) {
|
||
std::cerr << "Error: Function call argument count mismatch for function '" << funcName << "'." << std::endl;
|
||
assert(false && "Function call argument count mismatch!");
|
||
}
|
||
|
||
for (int i = 0; i < args.size(); i++) {
|
||
// 形参的类型 (e.g., i32, float, i32*, [10 x i32]*)
|
||
Type* formalParamExpectedValueType = formalParams[i]->getType();
|
||
// 实参的实际类型 (e.g., i32, float, i32*, [67 x i32]*)
|
||
Type* actualArgType = args[i]->getType();
|
||
// 如果实参类型与形参类型不匹配，则尝试进行类型转换
|
||
if (formalParamExpectedValueType != actualArgType) {
|
||
ConstantValue *constValue = dynamic_cast<ConstantValue *>(args[i]);
|
||
if (constValue != nullptr) {
|
||
if (formalParamExpectedValueType->isInt() && actualArgType->isFloat()) {
|
||
args[i] = ConstantInteger::get(static_cast<int>(constValue->getFloat()));
|
||
} else if (formalParamExpectedValueType->isFloat() && actualArgType->isInt()) {
|
||
args[i] = ConstantFloating::get(static_cast<float>(constValue->getInt()));
|
||
} else {
|
||
// 如果是常量但不是简单的 int/float 标量转换，
|
||
// 或者是指针常量需要 bitcast，则让它进入非常量转换逻辑。
|
||
// 例如，一个常量数组的地址，需要 bitcast 成另一种指针类型。
|
||
// 目前不知道样例有没有这种情况，所以这里不做处理。
|
||
}
|
||
}
|
||
else {
|
||
// 1. 标量值类型转换 (例如：int_reg 到 float_reg，float_reg 到 int_reg)
|
||
if (formalParamExpectedValueType->isInt() && actualArgType->isFloat()) {
|
||
args[i] = builder.createFtoIInst(args[i]);
|
||
} else if (formalParamExpectedValueType->isFloat() && actualArgType->isInt()) {
|
||
args[i] = builder.createIToFInst(args[i]);
|
||
}
|
||
// 2. 指针类型转换 (例如数组退化：`[N x T]*` 到 `T*`，或兼容指针类型之间) TODO：不清楚有没有这种样例
|
||
// 这种情况常见于数组参数，实参可能是一个更具体的数组指针类型，
|
||
// 而形参是其退化后的基础指针类型。LLVM 的 `bitcast` 指令可以用于
|
||
// 在相同大小的指针类型之间进行转换，这对于数组退化至关重要。
|
||
// else if (formalParamType->isPointer() && actualArgType->isPointer()) {
|
||
// 检查指针基类型是否兼容，或者是否是数组退化导致的类型不同。
|
||
// 使用 bitcast，
|
||
// args[i] = builder.createBitCastInst(args[i], formalParamType);
|
||
// }
|
||
// 3. 其他未预期的类型不匹配
|
||
// 如果代码执行到这里，说明存在编译器前端未处理的类型不兼容或错误。
|
||
else {
|
||
// assert(false && "Unhandled type mismatch for function call argument.");
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
return static_cast<Value *>(builder.createCallInst(function, args));
|
||
}
|
||
|
||
std::any SysYIRGenerator::visitUnaryExp(SysYParser::UnaryExpContext *ctx) {
|
||
if (ctx->primaryExp() != nullptr)
|
||
return visitPrimaryExp(ctx->primaryExp());
|
||
if (ctx->call() != nullptr)
|
||
return visitCall(ctx->call());
|
||
|
||
Value* value = std::any_cast<Value *>(visitUnaryExp(ctx->unaryExp()));
|
||
Value* result = value;
|
||
if (ctx->unaryOp()->SUB() != nullptr) {
|
||
ConstantValue * constValue = dynamic_cast<ConstantValue *>(value);
|
||
if (constValue != nullptr) {
|
||
if (constValue->isFloat()) {
|
||
result = ConstantFloating::get(-constValue->getFloat());
|
||
} else {
|
||
result = ConstantInteger::get(-constValue->getInt());
|
||
}
|
||
} else if (value != nullptr) {
|
||
if (value->getType() == Type::getIntType()) {
|
||
result = builder.createNegInst(value);
|
||
} else {
|
||
result = builder.createFNegInst(value);
|
||
}
|
||
} else {
|
||
std::cout << "UnExp: value is nullptr." << std::endl;
|
||
assert(false);
|
||
}
|
||
} else if (ctx->unaryOp()->NOT() != nullptr) {
|
||
auto constValue = dynamic_cast<ConstantValue *>(value);
|
||
if (constValue != nullptr) {
|
||
if (constValue->isFloat()) {
|
||
result =
|
||
ConstantFloating::get(1 - (constValue->getFloat() != 0.0F ? 1 : 0));
|
||
} else {
|
||
result = ConstantInteger::get(1 - (constValue->getInt() != 0 ? 1 : 0));
|
||
}
|
||
} else if (value != nullptr) {
|
||
if (value->getType() == Type::getIntType()) {
|
||
result = builder.createNotInst(value);
|
||
} else {
|
||
result = builder.createFNotInst(value);
|
||
}
|
||
} else {
|
||
std::cout << "UnExp: value is nullptr." << std::endl;
|
||
assert(false);
|
||
}
|
||
}
|
||
return result;
|
||
}
|
||
|
||
std::any SysYIRGenerator::visitFuncRParams(SysYParser::FuncRParamsContext *ctx) {
|
||
std::vector<Value *> params;
|
||
for (const auto &exp : ctx->exp())
|
||
params.push_back(std::any_cast<Value *>(visitExp(exp)));
|
||
return params;
|
||
}
|
||
|
||
|
||
std::any SysYIRGenerator::visitMulExp(SysYParser::MulExpContext *ctx) {
|
||
Value * result = std::any_cast<Value *>(visitUnaryExp(ctx->unaryExp(0)));
|
||
|
||
for (int i = 1; i < ctx->unaryExp().size(); i++) {
|
||
auto opNode = dynamic_cast<antlr4::tree::TerminalNode*>(ctx->children[2*i-1]);
|
||
int opType = opNode->getSymbol()->getType();
|
||
|
||
Value* operand = std::any_cast<Value *>(visitUnaryExp(ctx->unaryExp(i)));
|
||
|
||
Type* resultType = result->getType();
|
||
Type* operandType = operand->getType();
|
||
Type* floatType = Type::getFloatType();
|
||
|
||
if (resultType == floatType || operandType == floatType) {
|
||
// 如果有一个操作数是浮点数，则将两个操作数都转换为浮点数
|
||
if (operandType != floatType) {
|
||
ConstantValue * constValue = dynamic_cast<ConstantValue *>(operand);
|
||
if (constValue != nullptr) {
|
||
if(dynamic_cast<ConstantInteger *>(constValue)) {
|
||
// 如果是整型常量，转换为浮点型
|
||
operand = ConstantFloating::get(static_cast<float>(constValue->getInt()));
|
||
} else if (dynamic_cast<ConstantFloating *>(constValue)) {
|
||
// 如果是浮点型常量，直接使用
|
||
operand = ConstantFloating::get(static_cast<float>(constValue->getFloat()));
|
||
}
|
||
}
|
||
else
|
||
operand = builder.createIToFInst(operand);
|
||
} else if (resultType != floatType) {
|
||
ConstantValue* constResult = dynamic_cast<ConstantValue *>(result);
|
||
if (constResult != nullptr) {
|
||
if(dynamic_cast<ConstantInteger *>(constResult)) {
|
||
// 如果是整型常量，转换为浮点型
|
||
result = ConstantFloating::get(static_cast<float>(constResult->getInt()));
|
||
} else if (dynamic_cast<ConstantFloating *>(constResult)) {
|
||
// 如果是浮点型常量，直接使用
|
||
result = ConstantFloating::get(static_cast<float>(constResult->getFloat()));
|
||
}
|
||
}
|
||
else
|
||
result = builder.createIToFInst(result);
|
||
}
|
||
|
||
ConstantFloating* constResult = dynamic_cast<ConstantFloating *>(result);
|
||
ConstantFloating* constOperand = dynamic_cast<ConstantFloating *>(operand);
|
||
if (opType == SysYParser::MUL) {
|
||
if ((constOperand != nullptr) && (constResult != nullptr)) {
|
||
result = ConstantFloating::get(constResult->getFloat() *
|
||
constOperand->getFloat());
|
||
} else {
|
||
result = builder.createFMulInst(result, operand);
|
||
}
|
||
} else if (opType == SysYParser::DIV) {
|
||
if ((constOperand != nullptr) && (constResult != nullptr)) {
|
||
result = ConstantFloating::get(constResult->getFloat() /
|
||
constOperand->getFloat());
|
||
} else {
|
||
result = builder.createFDivInst(result, operand);
|
||
}
|
||
} else {
|
||
// float类型的取模操作不允许
|
||
std::cout << "MulExp: float type mod operation is not allowed." << std::endl;
|
||
assert(false);
|
||
}
|
||
} else {
|
||
ConstantInteger *constResult = dynamic_cast<ConstantInteger *>(result);
|
||
ConstantInteger *constOperand = dynamic_cast<ConstantInteger *>(operand);
|
||
if (opType == SysYParser::MUL) {
|
||
if ((constOperand != nullptr) && (constResult != nullptr))
|
||
result = ConstantInteger::get(constResult->getInt() * constOperand->getInt());
|
||
else
|
||
result = builder.createMulInst(result, operand);
|
||
} else if (opType == SysYParser::DIV) {
|
||
if ((constOperand != nullptr) && (constResult != nullptr))
|
||
result = ConstantInteger::get(constResult->getInt() / constOperand->getInt());
|
||
else
|
||
result = builder.createDivInst(result, operand);
|
||
} else {
|
||
if ((constOperand != nullptr) && (constResult != nullptr))
|
||
result = ConstantInteger::get(constResult->getInt() % constOperand->getInt());
|
||
else
|
||
result = builder.createRemInst(result, operand);
|
||
}
|
||
}
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
|
||
std::any SysYIRGenerator::visitAddExp(SysYParser::AddExpContext *ctx) {
|
||
Value* result = std::any_cast<Value *>(visitMulExp(ctx->mulExp(0)));
|
||
|
||
for (int i = 1; i < ctx->mulExp().size(); i++) {
|
||
auto opNode = dynamic_cast<antlr4::tree::TerminalNode*>(ctx->children[2*i-1]);
|
||
int opType = opNode->getSymbol()->getType();
|
||
|
||
Value* operand = std::any_cast<Value *>(visitMulExp(ctx->mulExp(i)));
|
||
Type* resultType = result->getType();
|
||
Type* operandType = operand->getType();
|
||
Type* floatType = Type::getFloatType();
|
||
|
||
if (resultType == floatType || operandType == floatType) {
|
||
// 类型转换
|
||
if (operandType != floatType) {
|
||
ConstantValue * constOperand = dynamic_cast<ConstantValue *>(operand);
|
||
if (constOperand != nullptr) {
|
||
if(dynamic_cast<ConstantInteger *>(constOperand)) {
|
||
// 如果是整型常量，转换为浮点型
|
||
operand = ConstantFloating::get(static_cast<float>(constOperand->getInt()));
|
||
} else if (dynamic_cast<ConstantFloating *>(constOperand)) {
|
||
// 如果是浮点型常量，直接使用
|
||
operand = ConstantFloating::get(static_cast<float>(constOperand->getFloat()));
|
||
}
|
||
}
|
||
else
|
||
operand = builder.createIToFInst(operand);
|
||
} else if (resultType != floatType) {
|
||
ConstantValue * constResult = dynamic_cast<ConstantValue *>(result);
|
||
if (constResult != nullptr) {
|
||
if(dynamic_cast<ConstantInteger *>(constResult)) {
|
||
// 如果是整型常量，转换为浮点型
|
||
result = ConstantFloating::get(static_cast<float>(constResult->getInt()));
|
||
} else if (dynamic_cast<ConstantFloating *>(constResult)) {
|
||
// 如果是浮点型常量，直接使用
|
||
result = ConstantFloating::get(static_cast<float>(constResult->getFloat()));
|
||
}
|
||
}
|
||
else
|
||
result = builder.createIToFInst(result);
|
||
}
|
||
|
||
ConstantFloating *constResult = dynamic_cast<ConstantFloating *>(result);
|
||
ConstantFloating *constOperand = dynamic_cast<ConstantFloating *>(operand);
|
||
if (opType == SysYParser::ADD) {
|
||
if ((constResult != nullptr) && (constOperand != nullptr))
|
||
result = ConstantFloating::get(constResult->getFloat() + constOperand->getFloat());
|
||
else
|
||
result = builder.createFAddInst(result, operand);
|
||
} else {
|
||
if ((constResult != nullptr) && (constOperand != nullptr))
|
||
result = ConstantFloating::get(constResult->getFloat() - constOperand->getFloat());
|
||
else
|
||
result = builder.createFSubInst(result, operand);
|
||
}
|
||
} else {
|
||
ConstantInteger *constResult = dynamic_cast<ConstantInteger *>(result);
|
||
ConstantInteger *constOperand = dynamic_cast<ConstantInteger *>(operand);
|
||
if (opType == SysYParser::ADD) {
|
||
if ((constResult != nullptr) && (constOperand != nullptr))
|
||
result = ConstantInteger::get(constResult->getInt() + constOperand->getInt());
|
||
else
|
||
result = builder.createAddInst(result, operand);
|
||
} else {
|
||
if ((constResult != nullptr) && (constOperand != nullptr))
|
||
result = ConstantInteger::get(constResult->getInt() - constOperand->getInt());
|
||
else
|
||
result = builder.createSubInst(result, operand);
|
||
}
|
||
}
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
std::any SysYIRGenerator::visitRelExp(SysYParser::RelExpContext *ctx) {
|
||
Value* result = std::any_cast<Value *>(visitAddExp(ctx->addExp(0)));
|
||
|
||
for (int i = 1; i < ctx->addExp().size(); i++) {
|
||
auto opNode = dynamic_cast<antlr4::tree::TerminalNode*>(ctx->children[2*i-1]);
|
||
int opType = opNode->getSymbol()->getType();
|
||
|
||
Value* operand = std::any_cast<Value *>(visitAddExp(ctx->addExp(i)));
|
||
|
||
Type* resultType = result->getType();
|
||
Type* operandType = operand->getType();
|
||
|
||
ConstantValue* constResult = dynamic_cast<ConstantValue *>(result);
|
||
ConstantValue* constOperand = dynamic_cast<ConstantValue *>(operand);
|
||
|
||
// 常量比较
|
||
if ((constResult != nullptr) && (constOperand != nullptr)) {
|
||
auto operand1 = constResult->isFloat() ? constResult->getFloat()
|
||
: constResult->getInt();
|
||
auto operand2 = constOperand->isFloat() ? constOperand->getFloat()
|
||
: constOperand->getInt();
|
||
|
||
if (opType == SysYParser::LT) result = ConstantInteger::get(operand1 < operand2 ? 1 : 0);
|
||
else if (opType == SysYParser::GT) result = ConstantInteger::get(operand1 > operand2 ? 1 : 0);
|
||
else if (opType == SysYParser::LE) result = ConstantInteger::get(operand1 <= operand2 ? 1 : 0);
|
||
else if (opType == SysYParser::GE) result = ConstantInteger::get(operand1 >= operand2 ? 1 : 0);
|
||
else assert(false);
|
||
|
||
} else {
|
||
Type* resultType = result->getType();
|
||
Type* operandType = operand->getType();
|
||
Type* floatType = Type::getFloatType();
|
||
|
||
// 浮点数处理
|
||
if (resultType == floatType || operandType == floatType) {
|
||
if (resultType != floatType) {
|
||
if (constResult != nullptr){
|
||
if(dynamic_cast<ConstantInteger *>(constResult)) {
|
||
// 如果是整型常量，转换为浮点型
|
||
result = ConstantFloating::get(static_cast<float>(constResult->getInt()));
|
||
} else if (dynamic_cast<ConstantFloating *>(constResult)) {
|
||
// 如果是浮点型常量，直接使用
|
||
result = ConstantFloating::get(static_cast<float>(constResult->getFloat()));
|
||
}
|
||
}
|
||
else
|
||
result = builder.createIToFInst(result);
|
||
|
||
}
|
||
if (operandType != floatType) {
|
||
if (constOperand != nullptr) {
|
||
if(dynamic_cast<ConstantInteger *>(constOperand)) {
|
||
// 如果是整型常量，转换为浮点型
|
||
operand = ConstantFloating::get(static_cast<float>(constOperand->getInt()));
|
||
} else if (dynamic_cast<ConstantFloating *>(constOperand)) {
|
||
// 如果是浮点型常量，直接使用
|
||
operand = ConstantFloating::get(static_cast<float>(constOperand->getFloat()));
|
||
}
|
||
}
|
||
else
|
||
operand = builder.createIToFInst(operand);
|
||
|
||
}
|
||
|
||
if (opType == SysYParser::LT) result = builder.createFCmpLTInst(result, operand);
|
||
else if (opType == SysYParser::GT) result = builder.createFCmpGTInst(result, operand);
|
||
else if (opType == SysYParser::LE) result = builder.createFCmpLEInst(result, operand);
|
||
else if (opType == SysYParser::GE) result = builder.createFCmpGEInst(result, operand);
|
||
else assert(false);
|
||
|
||
} else {
|
||
// 整数处理
|
||
if (opType == SysYParser::LT) result = builder.createICmpLTInst(result, operand);
|
||
else if (opType == SysYParser::GT) result = builder.createICmpGTInst(result, operand);
|
||
else if (opType == SysYParser::LE) result = builder.createICmpLEInst(result, operand);
|
||
else if (opType == SysYParser::GE) result = builder.createICmpGEInst(result, operand);
|
||
else assert(false);
|
||
|
||
}
|
||
}
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
|
||
std::any SysYIRGenerator::visitEqExp(SysYParser::EqExpContext *ctx) {
|
||
Value * result = std::any_cast<Value *>(visitRelExp(ctx->relExp(0)));
|
||
|
||
for (int i = 1; i < ctx->relExp().size(); i++) {
|
||
auto opNode = dynamic_cast<antlr4::tree::TerminalNode*>(ctx->children[2*i-1]);
|
||
int opType = opNode->getSymbol()->getType();
|
||
|
||
Value * operand = std::any_cast<Value *>(visitRelExp(ctx->relExp(i)));
|
||
|
||
ConstantValue* constResult = dynamic_cast<ConstantValue *>(result);
|
||
ConstantValue* constOperand = dynamic_cast<ConstantValue *>(operand);
|
||
|
||
if ((constResult != nullptr) && (constOperand != nullptr)) {
|
||
auto operand1 = constResult->isFloat() ? constResult->getFloat()
|
||
: constResult->getInt();
|
||
auto operand2 = constOperand->isFloat() ? constOperand->getFloat()
|
||
: constOperand->getInt();
|
||
|
||
if (opType == SysYParser::EQ) result = ConstantInteger::get(operand1 == operand2 ? 1 : 0);
|
||
else if (opType == SysYParser::NE) result = ConstantInteger::get(operand1 != operand2 ? 1 : 0);
|
||
else assert(false);
|
||
|
||
} else {
|
||
Type* resultType = result->getType();
|
||
Type* operandType = operand->getType();
|
||
Type* floatType = Type::getFloatType();
|
||
|
||
if (resultType == floatType || operandType == floatType) {
|
||
if (resultType != floatType) {
|
||
if (constResult != nullptr){
|
||
if(dynamic_cast<ConstantInteger *>(constResult)) {
|
||
// 如果是整型常量，转换为浮点型
|
||
result = ConstantFloating::get(static_cast<float>(constResult->getInt()));
|
||
} else if (dynamic_cast<ConstantFloating *>(constResult)) {
|
||
// 如果是浮点型常量，直接使用
|
||
result = ConstantFloating::get(static_cast<float>(constResult->getFloat()));
|
||
}
|
||
}
|
||
else
|
||
result = builder.createIToFInst(result);
|
||
}
|
||
if (operandType != floatType) {
|
||
if (constOperand != nullptr) {
|
||
if(dynamic_cast<ConstantInteger *>(constOperand)) {
|
||
// 如果是整型常量，转换为浮点型
|
||
operand = ConstantFloating::get(static_cast<float>(constOperand->getInt()));
|
||
} else if (dynamic_cast<ConstantFloating *>(constOperand)) {
|
||
// 如果是浮点型常量，直接使用
|
||
operand = ConstantFloating::get(static_cast<float>(constOperand->getFloat()));
|
||
}
|
||
}
|
||
else
|
||
operand = builder.createIToFInst(operand);
|
||
}
|
||
|
||
if (opType == SysYParser::EQ) result = builder.createFCmpEQInst(result, operand);
|
||
else if (opType == SysYParser::NE) result = builder.createFCmpNEInst(result, operand);
|
||
else assert(false);
|
||
|
||
} else {
|
||
|
||
if (opType == SysYParser::EQ) result = builder.createICmpEQInst(result, operand);
|
||
else if (opType == SysYParser::NE) result = builder.createICmpNEInst(result, operand);
|
||
else assert(false);
|
||
|
||
}
|
||
}
|
||
}
|
||
|
||
if (ctx->relExp().size() == 1) {
|
||
ConstantValue * constResult = dynamic_cast<ConstantValue *>(result);
|
||
// 如果只有一个关系表达式，则将结果转换为0或1
|
||
if (constResult != nullptr) {
|
||
if (constResult->isFloat())
|
||
result = ConstantInteger::get(constResult->getFloat() != 0.0F ? 1 : 0);
|
||
else
|
||
result = ConstantInteger::get(constResult->getInt() != 0 ? 1 : 0);
|
||
}
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
std::any SysYIRGenerator::visitLAndExp(SysYParser::LAndExpContext *ctx){
|
||
std::stringstream labelstring;
|
||
BasicBlock *curBlock = builder.getBasicBlock();
|
||
Function *function = builder.getBasicBlock()->getParent();
|
||
BasicBlock *trueBlock = builder.getTrueBlock();
|
||
BasicBlock *falseBlock = builder.getFalseBlock();
|
||
auto conds = ctx->eqExp();
|
||
|
||
for (int i = 0; i < conds.size() - 1; i++) {
|
||
|
||
labelstring << "AND.L" << builder.getLabelIndex();
|
||
BasicBlock *newtrueBlock = function->addBasicBlock(labelstring.str());
|
||
labelstring.str("");
|
||
|
||
auto cond = std::any_cast<Value *>(visitEqExp(ctx->eqExp(i)));
|
||
builder.createCondBrInst(cond, newtrueBlock, falseBlock);
|
||
|
||
BasicBlock::conectBlocks(curBlock, newtrueBlock);
|
||
BasicBlock::conectBlocks(curBlock, falseBlock);
|
||
|
||
curBlock = newtrueBlock;
|
||
builder.setPosition(curBlock, curBlock->end());
|
||
}
|
||
|
||
auto cond = std::any_cast<Value *>(visitEqExp(conds.back()));
|
||
builder.createCondBrInst(cond, trueBlock, falseBlock);
|
||
|
||
BasicBlock::conectBlocks(curBlock, trueBlock);
|
||
BasicBlock::conectBlocks(curBlock, falseBlock);
|
||
|
||
return std::any();
|
||
}
|
||
|
||
auto SysYIRGenerator::visitLOrExp(SysYParser::LOrExpContext *ctx) -> std::any {
|
||
std::stringstream labelstring;
|
||
BasicBlock *curBlock = builder.getBasicBlock();
|
||
Function *function = curBlock->getParent();
|
||
auto conds = ctx->lAndExp();
|
||
|
||
for (int i = 0; i < conds.size() - 1; i++) {
|
||
labelstring << "OR.L" << builder.getLabelIndex();
|
||
BasicBlock *newFalseBlock = function->addBasicBlock(labelstring.str());
|
||
labelstring.str("");
|
||
|
||
builder.pushFalseBlock(newFalseBlock);
|
||
visitLAndExp(ctx->lAndExp(i));
|
||
builder.popFalseBlock();
|
||
|
||
builder.setPosition(newFalseBlock, newFalseBlock->end());
|
||
}
|
||
|
||
visitLAndExp(conds.back());
|
||
|
||
return std::any();
|
||
}
|
||
|
||
// attention : 这里的type是数组元素的type
|
||
void Utils::tree2Array(Type *type, ArrayValueTree *root,
|
||
const std::vector<Value *> &dims, unsigned numDims,
|
||
ValueCounter &result, IRBuilder *builder) {
|
||
Value* value = root->getValue();
|
||
auto &children = root->getChildren();
|
||
// 类型转换
|
||
if (value != nullptr) {
|
||
if (type == value->getType()) {
|
||
result.push_back(value);
|
||
} else {
|
||
if (type == Type::getFloatType()) {
|
||
ConstantValue* constValue = dynamic_cast<ConstantValue *>(value);
|
||
if (constValue != nullptr) {
|
||
if(dynamic_cast<ConstantInteger *>(constValue))
|
||
result.push_back(ConstantFloating::get(static_cast<float>(constValue->getInt())));
|
||
else if (dynamic_cast<ConstantFloating *>(constValue))
|
||
result.push_back(ConstantFloating::get(static_cast<float>(constValue->getFloat())));
|
||
else
|
||
assert(false && "Unknown constant type for float conversion.");
|
||
}
|
||
else
|
||
result.push_back(builder->createIToFInst(value));
|
||
|
||
} else {
|
||
ConstantValue* constValue = dynamic_cast<ConstantValue *>(value);
|
||
if (constValue != nullptr){
|
||
if(dynamic_cast<ConstantInteger *>(constValue))
|
||
result.push_back(ConstantInteger::get(constValue->getInt()));
|
||
else if (dynamic_cast<ConstantFloating *>(constValue))
|
||
result.push_back(ConstantInteger::get(static_cast<int>(constValue->getFloat())));
|
||
else
|
||
assert(false && "Unknown constant type for int conversion.");
|
||
}
|
||
else
|
||
result.push_back(builder->createFtoIInst(value));
|
||
|
||
}
|
||
}
|
||
return;
|
||
}
|
||
|
||
auto beforeSize = result.size();
|
||
for (const auto &child : children) {
|
||
int begin = result.size();
|
||
int newNumDims = 0;
|
||
for (unsigned i = 0; i < numDims - 1; i++) {
|
||
auto dim = dynamic_cast<ConstantValue *>(*(dims.rbegin() + i))->getInt();
|
||
if (begin % dim == 0) {
|
||
newNumDims += 1;
|
||
begin /= dim;
|
||
} else {
|
||
break;
|
||
}
|
||
}
|
||
tree2Array(type, child.get(), dims, newNumDims, result, builder);
|
||
}
|
||
auto afterSize = result.size();
|
||
|
||
int blockSize = 1;
|
||
for (unsigned i = 0; i < numDims; i++) {
|
||
blockSize *= dynamic_cast<ConstantValue *>(*(dims.rbegin() + i))->getInt();
|
||
}
|
||
|
||
int num = blockSize - afterSize + beforeSize;
|
||
if (num > 0) {
|
||
if (type == Type::getFloatType())
|
||
result.push_back(ConstantFloating::get(0.0F), num);
|
||
else
|
||
result.push_back(ConstantInteger::get(0), num);
|
||
}
|
||
}
|
||
|
||
void Utils::createExternalFunction(
|
||
const std::vector<Type *> ¶mTypes,
|
||
const std::vector<std::string> ¶mNames,
|
||
const std::vector<std::vector<Value *>> ¶mDims, Type *returnType,
|
||
const std::string &funcName, Module *pModule, IRBuilder *pBuilder) {
|
||
auto funcType = Type::getFunctionType(returnType, paramTypes);
|
||
auto function = pModule->createExternalFunction(funcName, funcType);
|
||
auto entry = function->getEntryBlock();
|
||
pBuilder->setPosition(entry, entry->end());
|
||
|
||
for (int i = 0; i < paramTypes.size(); ++i) {
|
||
auto arg = new Argument(paramTypes[i], function, i, paramNames[i]);
|
||
auto alloca = pBuilder->createAllocaInst(
|
||
Type::getPointerType(paramTypes[i]), paramNames[i]);
|
||
function->insertArgument(arg);
|
||
auto store = pBuilder->createStoreInst(arg, alloca);
|
||
pModule->addVariable(paramNames[i], alloca);
|
||
}
|
||
}
|
||
|
||
void Utils::initExternalFunction(Module *pModule, IRBuilder *pBuilder) {
|
||
std::vector<Type *> paramTypes;
|
||
std::vector<std::string> paramNames;
|
||
std::vector<std::vector<Value *>> paramDims;
|
||
Type *returnType;
|
||
std::string funcName;
|
||
|
||
returnType = Type::getIntType();
|
||
funcName = "getint";
|
||
Utils::createExternalFunction(paramTypes, paramNames, paramDims, returnType,
|
||
funcName, pModule, pBuilder);
|
||
funcName = "getch";
|
||
Utils::createExternalFunction(paramTypes, paramNames, paramDims, returnType,
|
||
funcName, pModule, pBuilder);
|
||
paramTypes.push_back(Type::getIntType());
|
||
paramNames.emplace_back("x");
|
||
paramDims.push_back(std::vector<Value *>{ConstantInteger::get(-1)});
|
||
funcName = "getarray";
|
||
Utils::createExternalFunction(paramTypes, paramNames, paramDims, returnType,
|
||
funcName, pModule, pBuilder);
|
||
|
||
returnType = Type::getFloatType();
|
||
paramTypes.clear();
|
||
paramNames.clear();
|
||
paramDims.clear();
|
||
funcName = "getfloat";
|
||
Utils::createExternalFunction(paramTypes, paramNames, paramDims, returnType,
|
||
funcName, pModule, pBuilder);
|
||
|
||
returnType = Type::getIntType();
|
||
paramTypes.push_back(Type::getFloatType());
|
||
paramNames.emplace_back("x");
|
||
paramDims.push_back(std::vector<Value *>{ConstantInteger::get(-1)});
|
||
funcName = "getfarray";
|
||
Utils::createExternalFunction(paramTypes, paramNames, paramDims, returnType,
|
||
funcName, pModule, pBuilder);
|
||
|
||
returnType = Type::getVoidType();
|
||
|
||
paramTypes.clear();
|
||
paramTypes.push_back(Type::getIntType());
|
||
paramDims.clear();
|
||
paramDims.emplace_back();
|
||
funcName = "putint";
|
||
Utils::createExternalFunction(paramTypes, paramNames, paramDims, returnType,
|
||
funcName, pModule, pBuilder);
|
||
|
||
funcName = "putch";
|
||
Utils::createExternalFunction(paramTypes, paramNames, paramDims, returnType,
|
||
funcName, pModule, pBuilder);
|
||
|
||
paramTypes.clear();
|
||
paramTypes.push_back(Type::getIntType());
|
||
paramTypes.push_back(Type::getIntType());
|
||
paramDims.clear();
|
||
paramDims.emplace_back();
|
||
paramDims.push_back(std::vector<Value *>{ConstantInteger::get(-1)});
|
||
paramNames.clear();
|
||
paramNames.emplace_back("n");
|
||
paramNames.emplace_back("a");
|
||
funcName = "putarray";
|
||
Utils::createExternalFunction(paramTypes, paramNames, paramDims, returnType,
|
||
funcName, pModule, pBuilder);
|
||
|
||
paramTypes.clear();
|
||
paramTypes.push_back(Type::getFloatType());
|
||
paramDims.clear();
|
||
paramDims.emplace_back();
|
||
paramNames.clear();
|
||
paramNames.emplace_back("a");
|
||
funcName = "putfloat";
|
||
Utils::createExternalFunction(paramTypes, paramNames, paramDims, returnType,
|
||
funcName, pModule, pBuilder);
|
||
|
||
paramTypes.clear();
|
||
paramTypes.push_back(Type::getIntType());
|
||
paramTypes.push_back(Type::getFloatType());
|
||
paramDims.clear();
|
||
paramDims.emplace_back();
|
||
paramDims.push_back(std::vector<Value *>{ConstantInteger::get(-1)});
|
||
paramNames.clear();
|
||
paramNames.emplace_back("n");
|
||
paramNames.emplace_back("a");
|
||
funcName = "putfarray";
|
||
Utils::createExternalFunction(paramTypes, paramNames, paramDims, returnType,
|
||
funcName, pModule, pBuilder);
|
||
|
||
paramTypes.clear();
|
||
paramTypes.push_back(Type::getIntType());
|
||
paramDims.clear();
|
||
paramDims.emplace_back();
|
||
paramNames.clear();
|
||
paramNames.emplace_back("__LINE__");
|
||
funcName = "starttime";
|
||
Utils::createExternalFunction(paramTypes, paramNames, paramDims, returnType,
|
||
funcName, pModule, pBuilder);
|
||
|
||
paramTypes.clear();
|
||
paramTypes.push_back(Type::getIntType());
|
||
paramDims.clear();
|
||
paramDims.emplace_back();
|
||
paramNames.clear();
|
||
paramNames.emplace_back("__LINE__");
|
||
funcName = "stoptime";
|
||
Utils::createExternalFunction(paramTypes, paramNames, paramDims, returnType,
|
||
funcName, pModule, pBuilder);
|
||
|
||
}
|
||
|
||
} // namespace sysy
|