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[backend]修复了较小全零全局数组未显示初始化导致未定义行为的问题

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Lixuanwang
2025-08-04 02:31:18 +08:00
parent 1b9a7a4827
commit a269366ac5
1 changed files with 23 additions and 1 deletions
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24
src/backend/RISCv64/RISCv64Backend.cpp
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@ -139,7 +139,29 @@ std::string RISCv64CodeGen::module_gen() {
ss << ".type " << global->getName() << ", @object\n";
ss << ".size " << global->getName() << ", " << total_size << "\n";
ss << global->getName() << ":\n";
printInitializer(ss, global->getInitValues());
bool is_all_zeros = true;
const auto& init_values = global->getInitValues();
if (init_values.getValues().empty()) {
is_all_zeros = true;
} else {
for (auto val : init_values.getValues()) {
if (auto const_val = dynamic_cast<ConstantValue*>(val)) {
if (!const_val->isZero()) {
is_all_zeros = false;
break;
}
} else {
is_all_zeros = false;
break;
}
}
}
if (is_all_zeros) {
ss << " .zero " << total_size << "\n";
} else {
// 对于有非零初始值的变量，保持原有的打印逻辑。
printInitializer(ss, global->getInitValues());
}
}
// b. 处理全局常量 (ConstantVariable)