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84 lines
2.3 KiB
84 lines
2.3 KiB
// SSA 值体系抽象：
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// - 常量、参数、指令结果等统一为 Value
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// - 提供类型信息与使用/被使用关系（按需要实现）
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#include "ir/IR.h"
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#include <algorithm>
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namespace ir {
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Value::Value(std::shared_ptr<Type> ty, std::string name)
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: type_(std::move(ty)), name_(std::move(name)) {}
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const std::shared_ptr<Type>& Value::GetType() const { return type_; }
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const std::string& Value::GetName() const { return name_; }
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void Value::SetName(std::string n) { name_ = std::move(n); }
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bool Value::IsVoid() const { return type_ && type_->IsVoid(); }
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bool Value::IsInt32() const { return type_ && type_->IsInt32(); }
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bool Value::IsPtrInt32() const { return type_ && type_->IsPtrInt32(); }
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bool Value::IsConstant() const {
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return dynamic_cast<const ConstantValue*>(this) != nullptr;
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}
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bool Value::IsInstruction() const {
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return dynamic_cast<const Instruction*>(this) != nullptr;
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}
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bool Value::IsUser() const {
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return dynamic_cast<const User*>(this) != nullptr;
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}
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bool Value::IsFunction() const {
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return dynamic_cast<const Function*>(this) != nullptr;
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}
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void Value::AddUse(User* user, size_t operand_index) {
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if (!user) return;
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uses_.push_back(Use(this, user, operand_index));
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}
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void Value::RemoveUse(User* user, size_t operand_index) {
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uses_.erase(
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std::remove_if(uses_.begin(), uses_.end(),
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[&](const Use& use) {
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return use.GetUser() == user &&
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use.GetOperandIndex() == operand_index;
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}),
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uses_.end());
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}
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const std::vector<Use>& Value::GetUses() const { return uses_; }
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void Value::ReplaceAllUsesWith(Value* new_value) {
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if (!new_value) {
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throw std::runtime_error("ReplaceAllUsesWith 缺少 new_value");
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}
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if (new_value == this) {
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return;
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}
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auto uses = uses_;
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for (const auto& use : uses) {
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auto* user = use.GetUser();
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if (!user) continue;
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size_t operand_index = use.GetOperandIndex();
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if (user->GetOperand(operand_index) == this) {
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user->SetOperand(operand_index, new_value);
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}
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}
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}
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ConstantValue::ConstantValue(std::shared_ptr<Type> ty, std::string name)
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: Value(std::move(ty), std::move(name)) {}
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ConstantInt::ConstantInt(std::shared_ptr<Type> ty, int v)
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: ConstantValue(std::move(ty), ""), value_(v) {}
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} // namespace ir
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