gh0s7/mysysy
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[IR Gen] debugging SIGSEGV

Browse Source
This commit is contained in:
lixuanwang
2025-06-09 21:11:17 +08:00
parent 3c5fb7d17b
commit 5727d3bde5
2 changed files with 40 additions and 35 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
src/LLVMIRGenerator.cpp
View File

@ -533,6 +533,7 @@ std::any LLVMIRGenerator::visitUnExp(SysYParser::UnExpContext* ctx) {
}
return ctx->unaryExp()->accept(this);
}
std::any LLVMIRGenerator::visitCall(SysYParser::CallContext *ctx)
{
std::string funcName = ctx->Ident()->getText();

74
src/LLVMIRGenerator_1.cpp
View File

@ -180,7 +180,7 @@ std::any LLVMIRGenerator::visitConstDecl(SysYParser::ConstDeclContext* ctx) {
symbolTable[varName] = {allocaName, llvmType};
tmpTable[allocaName] = llvmType;
// 局部常量（SysY IR）
// 局部常量（SysY IR）TODO:这里可能有bug，AI在犯蠢
sysy::IRBuilder builder(currentIRBlock);
auto allocaInst = builder.createAllocaInst(irType, {}, varName);
builder.createStoreInst(initValue, allocaInst);
@ -230,9 +230,9 @@ std::any LLVMIRGenerator::visitVarDef(SysYParser::VarDefContext* ctx) {
symbolTable[varName] = {allocaName, llvmType};
tmpTable[allocaName] = llvmType;
irSymbolTable[varName] = allocaInst;
irTmpTable[allocaName] = allocaInst;
builder.createStoreInst(initValue, allocaInst);
irSymbolTable[varName] = allocaInst;//TODO:这里没看懂在干嘛
irTmpTable[allocaName] = allocaInst;//TODO:这里没看懂在干嘛
builder.createStoreInst(initValue, allocaInst);//TODO:这里没看懂在干嘛
return nullptr;
}
@ -342,6 +342,7 @@ std::any LLVMIRGenerator::visitAssignStmt(SysYParser::AssignStmtContext* ctx) {
rhs = ss.str();
} catch (...) {
// 如果 rhs 不是字面量，假设已正确处理
throw std::runtime_error("Invalid float literal: " + rhs);
}
}
irStream << " store " << lhsType << " " << rhs << ", " << lhsType
@ -485,9 +486,7 @@ std::any LLVMIRGenerator::visitLValue(SysYParser::LValueContext* ctx) {
std::any LLVMIRGenerator::visitPrimExp(SysYParser::PrimExpContext* ctx) {
SysYParser::PrimaryExpContext* pExpCtx = ctx->primaryExp();
if (auto* lvalCtx = dynamic_cast<SysYParser::LValContext*>(pExpCtx)) {
std
::string allocaPtr = std::any_cast<std::string>(lvalCtx->lValue()->accept(this));
std::string allocaPtr = std::any_cast<std::string>(lvalCtx->lValue()->accept(this));
std::string varName = lvalCtx->lValue()->Ident()->getText();
std::string type = symbolTable[varName].second;
std::string temp = getNextTemp();
@ -509,6 +508,9 @@ std::any LLVMIRGenerator::visitPrimExp(SysYParser::PrimExpContext* ctx) {
} else if (auto* numCtx = dynamic_cast<SysYParser::NumContext*>(pExpCtx)) {
return numCtx->number()->accept(this);
} else {
// 没有成功转换，说明 ctx->primaryExp() 不是 NumContext 或其他已知类型
// 可能是其他类型的表达式，或者是一个空的 PrimaryExpContext
std::cout << "Unknown primary expression type." << std::endl;
throw std::runtime_error("Unknown primary expression type.");
}
}
@ -555,6 +557,36 @@ std::any LLVMIRGenerator::visitString(SysYParser::StringContext* ctx) {
return ctx->STRING()->getText();
}
std::any LLVMIRGenerator::visitUnExp(SysYParser::UnExpContext* ctx) {
if (ctx->unaryOp()) {
std::string operand = std::any_cast<std::string>(ctx->unaryExp()->accept(this));
sysy::Value* irOperand = irTmpTable[operand];
std::string op = ctx->unaryOp()->getText();
std::string temp = getNextTemp();
std::string type = tmpTable[operand];
sysy::Type* irType = getIRType(type == "i32" ? "int" : "float");
tmpTable[temp] = type;
// 文本 IR
if (op == "-") {
irStream << " " << temp << " = sub " << type << " 0, " << operand << "\n";
} else if (op == "!") {
irStream << " " << temp << " = xor " << type << " " << operand << ", 1\n";
}
// SysY IR
sysy::IRBuilder builder(currentIRBlock);
sysy::Instruction::Kind kind = (op == "-") ? (type == "i32" ? sysy::Instruction::kNeg : sysy::Instruction::kFNeg)
: sysy::Instruction::kNot;
auto unaryInst = builder.createUnaryInst(kind, irType, irOperand, temp);
irTmpTable[temp] = unaryInst;
return temp;
}
return ctx->unaryExp()->accept(this);
}
std::any LLVMIRGenerator::visitCall(SysYParser::CallContext* ctx) {
std::string funcName = ctx->Ident()->getText();
std::vector<std::string> args;
@ -588,34 +620,6 @@ std::any LLVMIRGenerator::visitCall(SysYParser::CallContext* ctx) {
return temp;
}
std::any LLVMIRGenerator::visitUnExp(SysYParser::UnExpContext* ctx) {
if (ctx->unaryOp()) {
std::string operand = std::any_cast<std::string>(ctx->unaryExp()->accept(this));
sysy::Value* irOperand = irTmpTable[operand];
std::string op = ctx->unaryOp()->getText();
std::string temp = getNextTemp();
std::string type = tmpTable[operand];
sysy::Type* irType = getIRType(type == "i32" ? "int" : "float");
tmpTable[temp] = type;
// 文本 IR
if (op == "-") {
irStream << " " << temp << " = sub " << type << " 0, " << operand << "\n";
} else if (op == "!") {
irStream << " " << temp << " = xor " << type << " " << operand << ", 1\n";
}
// SysY IR
sysy::IRBuilder builder(currentIRBlock);
sysy::Instruction::Kind kind = (op == "-") ? (type == "i32" ? sysy::Instruction::kNeg : sysy::Instruction::kFNeg)
: sysy::Instruction::kNot;
auto unaryInst = builder.createUnaryInst(kind, irType, irOperand, temp);
irTmpTable[temp] = unaryInst;
return temp;
}
return ctx->unaryExp()->accept(this);
}
std::any LLVMIRGenerator::visitMulExp(SysYParser::MulExpContext* ctx) {
auto unaryExps = ctx->unaryExp();
std::string left = std::any_cast<std::string>(unaryExps[0]->accept(this));