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[backend]强化了线性扫描逻辑

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This commit is contained in:
Lixuanwang
2025-08-04 19:28:15 +08:00
parent b5f14d9385
commit 881c2a9723
3 changed files with 206 additions and 123 deletions
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302
src/backend/RISCv64/RISCv64LinearScan.cpp
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@ -89,22 +89,27 @@ void RISCv64LinearScan::linearizeBlocks() {
}
}
// 步骤 1.2: 计算活跃区间
// RISCv64LinearScan.cpp
void RISCv64LinearScan::computeLiveIntervals() {
instr_numbering.clear();
live_intervals.clear();
unhandled.clear();
// a. 对所有指令进行线性编号
// a. 对所有指令进行线性编号，并记录CALL指令的位置
int num = 0;
std::set<int> call_locations;
for (auto* mbb : linear_order_blocks) {
for (auto& instr : mbb->getInstructions()) {
instr_numbering[instr.get()] = num;
if (instr->getOpcode() == RVOpcodes::CALL) {
call_locations.insert(num);
}
num += 2; // 指令编号间隔为2，方便在溢出重写时插入指令
}
}
// b. (新逻辑) 遍历所有指令，记录每个vreg首次和末次出现的位置
// b. 遍历所有指令，记录每个vreg首次和末次出现的位置
std::map<unsigned, std::pair<int, int>> vreg_ranges; // vreg -> {first_instr_num, last_instr_num}
for (auto* mbb : linear_order_blocks) {
@ -114,28 +119,31 @@ void RISCv64LinearScan::computeLiveIntervals() {
std::set<unsigned> use, def;
getInstrUseDef(instr, use, def);
// 合并use和def集合，获取本条指令涉及的所有vreg
auto all_vregs = use;
all_vregs.insert(def.begin(), def.end());
// 更新每个vreg的区间边界
for (unsigned vreg : all_vregs) {
if (vreg_ranges.find(vreg) == vreg_ranges.end()) {
// 第一次见到这个vreg，记录首次和末次位置
vreg_ranges[vreg] = {instr_num, instr_num};
} else {
// 更新末次位置
vreg_ranges[vreg].second = std::max(vreg_ranges[vreg].second, instr_num);
}
}
}
}
// c. 根据记录的边界，创建LiveInterval对象
// c. 根据记录的边界，创建LiveInterval对象，并检查是否跨越CALL
for (auto const& [vreg, range] : vreg_ranges) {
live_intervals.emplace(vreg, LiveInterval(vreg));
live_intervals.at(vreg).start = range.first;
live_intervals.at(vreg).end = range.second;
auto& interval = live_intervals.at(vreg);
interval.start = range.first;
interval.end = range.second;
// 检查此区间是否跨越了任何CALL指令
auto it = call_locations.lower_bound(interval.start);
if (it != call_locations.end() && *it < interval.end) {
interval.crosses_call = true;
}
}
// d. 将所有计算出的活跃区间放入 unhandled 列表
@ -147,62 +155,106 @@ void RISCv64LinearScan::computeLiveIntervals() {
});
}
// 步骤 2: 线性扫描主算法
// RISCv64LinearScan.cpp
// 在类的定义中添加一个辅助函数来判断寄存器类型
bool isCalleeSaved(PhysicalReg preg) {
if (preg >= PhysicalReg::S1 && preg <= PhysicalReg::S11) return true;
if (preg == PhysicalReg::S0) return true; // s0 通常也作为被调用者保存
// 浮点寄存器
if (preg >= PhysicalReg::F8 && preg <= PhysicalReg::F9) return true;
if (preg >= PhysicalReg::F18 && preg <= PhysicalReg::F27) return true;
return false;
}
// 线性扫描主算法
bool RISCv64LinearScan::linearScan() {
// 初始化/重置状态
active.clear();
spilled_vregs.clear();
vreg_to_preg_map.clear();
free_int_regs.clear();
free_fp_regs.clear();
free_int_regs.insert(allocable_int_regs.begin(), allocable_int_regs.end());
free_fp_regs.insert(allocable_fp_regs.begin(), allocable_fp_regs.end());
// 1. 将ABI参数的vreg直接分配给其固定的物理寄存器
// 将寄存器池分为调用者保存和被调用者保存两类
std::set<PhysicalReg> free_caller_int_regs, free_callee_int_regs;
std::set<PhysicalReg> free_caller_fp_regs, free_callee_fp_regs;
for (auto preg : allocable_int_regs) {
if (isCalleeSaved(preg)) free_callee_int_regs.insert(preg);
else free_caller_int_regs.insert(preg);
}
for (auto preg : allocable_fp_regs) {
if (isCalleeSaved(preg)) free_callee_fp_regs.insert(preg);
else free_caller_fp_regs.insert(preg);
}
// 预处理ABI参数寄存器
vreg_to_preg_map.insert(abi_vreg_map.begin(), abi_vreg_map.end());
// 2. 从unhandled列表中移除这些ABI参数区间，并将其加入active列表
std::vector<LiveInterval*> normal_unhandled;
for(LiveInterval* interval : unhandled) {
if(abi_vreg_map.count(interval->vreg)) {
// 这是一个ABI参数区间，它已经被“预分配”
active.push_back(interval);
// 从空闲池中移除对应的物理寄存器
PhysicalReg preg = abi_vreg_map.at(interval->vreg);
if (isFPVReg(interval->vreg)) {
free_fp_regs.erase(preg);
if(isCalleeSaved(preg)) free_callee_fp_regs.erase(preg); else free_caller_fp_regs.erase(preg);
} else {
free_int_regs.erase(preg);
if(isCalleeSaved(preg)) free_callee_int_regs.erase(preg); else free_caller_int_regs.erase(preg);
}
} else {
// 这是一个普通区间，留待后续处理
normal_unhandled.push_back(interval);
}
}
unhandled = normal_unhandled; // 更新unhandled列表，只包含普通区间
// 3. 对active列表（现在只包含ABI参数）按结束点排序
std::sort(active.begin(), active.end(), [](const LiveInterval* a, const LiveInterval* b){
return a->end < b->end;
});
unhandled = normal_unhandled;
std::sort(active.begin(), active.end(), [](const LiveInterval* a, const LiveInterval* b){ return a->end < b->end; });
// 主循环
for (LiveInterval* current : unhandled) {
// a. 检查并释放 active 列表中已经结束的区间
// a. 释放active列表中已结束的区间
std::vector<LiveInterval*> new_active;
for (LiveInterval* active_interval : active) {
if (active_interval->end < current->start) {
// 此区间已结束，释放其物理寄存器
PhysicalReg preg = vreg_to_preg_map.at(active_interval->vreg);
if (isFPVReg(active_interval->vreg)) free_fp_regs.insert(preg);
else free_int_regs.insert(preg);
if (isFPVReg(active_interval->vreg)) {
if(isCalleeSaved(preg)) free_callee_fp_regs.insert(preg); else free_caller_fp_regs.insert(preg);
} else {
if(isCalleeSaved(preg)) free_callee_int_regs.insert(preg); else free_caller_int_regs.insert(preg);
}
} else {
new_active.push_back(active_interval);
}
}
active = new_active;
// b. 尝试为当前区间分配寄存器
chooseRegForInterval(current);
// b. 约束化地为当前区间分配寄存器
bool is_fp = isFPVReg(current->vreg);
auto& free_caller = is_fp ? free_caller_fp_regs : free_caller_int_regs;
auto& free_callee = is_fp ? free_callee_fp_regs : free_callee_int_regs;
PhysicalReg allocated_preg = PhysicalReg::INVALID;
if (current->crosses_call) {
// 跨调用区间：必须使用被调用者保存寄存器
if (!free_callee.empty()) {
allocated_preg = *free_callee.begin();
free_callee.erase(allocated_preg);
}
} else {
// 非跨调用区间：优先使用调用者保存寄存器
if (!free_caller.empty()) {
allocated_preg = *free_caller.begin();
free_caller.erase(allocated_preg);
} else if (!free_callee.empty()) {
allocated_preg = *free_callee.begin();
free_callee.erase(allocated_preg);
}
}
if (allocated_preg != PhysicalReg::INVALID) {
vreg_to_preg_map[current->vreg] = allocated_preg;
active.push_back(current);
std::sort(active.begin(), active.end(), [](const LiveInterval* a, const LiveInterval* b){ return a->end < b->end; });
} else {
// c. 没有可用寄存器，需要溢出
spillAtInterval(current);
}
}
return !spilled_vregs.empty();
}
@ -228,33 +280,29 @@ void RISCv64LinearScan::chooseRegForInterval(LiveInterval* current) {
}
void RISCv64LinearScan::spillAtInterval(LiveInterval* current) {
// 启发式：比较当前区间和 active 列表中结束点最晚的区间
LiveInterval* spill_candidate = active.back(); // active已按end排序，最后一个就是结束最晚的
if (spill_candidate->end > current->end) {
// active中的区间结束得更晚，溢出它
PhysicalReg preg = vreg_to_preg_map.at(spill_candidate->vreg);
// 将被溢出区间的物理寄存器分配给当前区间
vreg_to_preg_map[current->vreg] = preg;
// 更新 active 列表
active.pop_back(); // 移除被溢出的
active.push_back(current); // 加入当前的
std::sort(active.begin(), active.end(), [](const LiveInterval* a, const LiveInterval* b){
return a->end < b->end;
});
LiveInterval* spill_candidate = nullptr;
// 启发式溢出：
// 如果current需要callee-saved，则从active中找一个占用callee-saved且结束最晚的区间比较
// 否则，找active中结束最晚的区间
// 这里简化处理：总是找active中结束最晚的区间
auto last_active = active.back();
if (last_active->end > current->end) {
// 溢出active中的区间
spill_candidate = last_active;
PhysicalReg preg = vreg_to_preg_map.at(spill_candidate->vreg);
vreg_to_preg_map[current->vreg] = preg; // 把换出的寄存器给current
// 更新active列表
active.pop_back();
active.push_back(current);
std::sort(active.begin(), active.end(), [](const LiveInterval* a, const LiveInterval* b){ return a->end < b->end; });
spilled_vregs.insert(spill_candidate->vreg);
if(DEBUG) std::cerr << " Spilling vreg" << spill_candidate->vreg << " to make room for vreg" << current->vreg << "\n";
} else {
// 当前区间结束得更晚，直接溢出当前区间
// 溢出当前区间
spilled_vregs.insert(current->vreg);
if(DEBUG) std::cerr << " Spilling current vreg" << current->vreg << "\n";
}
}
// 步骤 3: 重写程序，插入溢出代码
void RISCv64LinearScan::rewriteProgram() {
StackFrameInfo& frame_info = MFunc->getFrameInfo();
@ -276,15 +324,20 @@ void RISCv64LinearScan::rewriteProgram() {
for (auto it = instrs.begin(); it != instrs.end(); ++it) {
auto& instr = *it;
std::set<unsigned> use, def;
getInstrUseDef(instr.get(), use, def);
std::set<unsigned> use_vregs, def_vregs;
getInstrUseDef(instr.get(), use_vregs, def_vregs);
// 为每个溢出的 use 创建 load
for (unsigned old_vreg : use) {
if (spilled_vregs.count(old_vreg)) {
// 建立溢出vreg到新临时vreg的映射
std::map<unsigned, unsigned> use_remap;
std::map<unsigned, unsigned> def_remap;
// 1. 为所有溢出的USE创建LOAD指令和映射
for (unsigned old_vreg : use_vregs) {
if (spilled_vregs.count(old_vreg) && use_remap.find(old_vreg) == use_remap.end()) {
Type* type = vreg_type_map.at(old_vreg);
unsigned new_temp_vreg = ISel->getNewVReg(type);
use_remap[old_vreg] = new_temp_vreg;
RVOpcodes load_op = isFPVReg(old_vreg) ? RVOpcodes::FLW : (type->isPointer() ? RVOpcodes::LD : RVOpcodes::LW);
auto load = std::make_unique<MachineInstr>(load_op);
load->addOperand(std::make_unique<RegOperand>(new_temp_vreg));
@ -293,52 +346,74 @@ void RISCv64LinearScan::rewriteProgram() {
std::make_unique<ImmOperand>(frame_info.spill_offsets.at(old_vreg))
));
new_instrs.push_back(std::move(load));
}
}
// 替换原指令中的 use
for(auto& op : instr->getOperands()) {
if(op->getKind() == MachineOperand::KIND_REG) {
auto reg_op = static_cast<RegOperand*>(op.get());
if(reg_op->isVirtual() && reg_op->getVRegNum() == old_vreg) {
reg_op->setVRegNum(new_temp_vreg);
}
} else if(op->getKind() == MachineOperand::KIND_MEM) {
auto mem_op = static_cast<MemOperand*>(op.get());
auto base_reg = mem_op->getBase();
if(base_reg->isVirtual() && base_reg->getVRegNum() == old_vreg) {
base_reg->setVRegNum(new_temp_vreg);
}
}
}
// 2. 为所有溢出的DEF创建映射
for (unsigned old_vreg : def_vregs) {
if (spilled_vregs.count(old_vreg) && def_remap.find(old_vreg) == def_remap.end()) {
Type* type = vreg_type_map.at(old_vreg);
unsigned new_temp_vreg = ISel->getNewVReg(type);
def_remap[old_vreg] = new_temp_vreg;
}
}
new_instrs.push_back(std::move(instr));
// 3. 基于角色精确地替换原指令中的操作数
auto opcode = instr->getOpcode();
auto& operands = instr->getOperands();
// 为每个溢出的 def 创建 store
for (unsigned old_vreg : def) {
if (spilled_vregs.count(old_vreg)) {
Type* type = vreg_type_map.at(old_vreg);
unsigned new_temp_vreg = ISel->getNewVReg(type);
// 替换原指令中的 def
for(auto& op : new_instrs.back()->getOperands()) {
if(op->getKind() == MachineOperand::KIND_REG) {
auto reg_op = static_cast<RegOperand*>(op.get());
if(reg_op->isVirtual() && reg_op->getVRegNum() == old_vreg) {
reg_op->setVRegNum(new_temp_vreg);
}
auto replace_reg_op = [](RegOperand* reg_op, const std::map<unsigned, unsigned>& remap) {
if (reg_op->isVirtual() && remap.count(reg_op->getVRegNum())) {
reg_op->setVRegNum(remap.at(reg_op->getVRegNum()));
}
};
if (op_info.count(opcode)) {
const auto& info = op_info.at(opcode);
// 替换 Defs
for (int idx : info.first) {
if (idx < operands.size() && operands[idx]->getKind() == MachineOperand::KIND_REG) {
replace_reg_op(static_cast<RegOperand*>(operands[idx].get()), def_remap);
}
}
// 替换 Uses
for (int idx : info.second) {
if (idx < operands.size()) {
if (operands[idx]->getKind() == MachineOperand::KIND_REG) {
replace_reg_op(static_cast<RegOperand*>(operands[idx].get()), use_remap);
} else if (operands[idx]->getKind() == MachineOperand::KIND_MEM) {
replace_reg_op(static_cast<MemOperand*>(operands[idx].get())->getBase(), use_remap);
}
}
RVOpcodes store_op = isFPVReg(old_vreg) ? RVOpcodes::FSW : (type->isPointer() ? RVOpcodes::SD : RVOpcodes::SW);
auto store = std::make_unique<MachineInstr>(store_op);
store->addOperand(std::make_unique<RegOperand>(new_temp_vreg));
store->addOperand(std::make_unique<MemOperand>(
std::make_unique<RegOperand>(PhysicalReg::S0),
std::make_unique<ImmOperand>(frame_info.spill_offsets.at(old_vreg))
));
new_instrs.push_back(std::move(store));
}
} else if (opcode == RVOpcodes::CALL) {
// 特殊处理 CALL 指令
if (!operands.empty() && operands[0]->getKind() == MachineOperand::KIND_REG) {
replace_reg_op(static_cast<RegOperand*>(operands[0].get()), def_remap);
}
for (size_t i = 1; i < operands.size(); ++i) {
if (operands[i]->getKind() == MachineOperand::KIND_REG) {
replace_reg_op(static_cast<RegOperand*>(operands[i].get()), use_remap);
}
}
}
// 4. 将修改后的指令放入新列表
new_instrs.push_back(std::move(instr));
// 5. 为所有溢出的DEF创建STORE指令
for(const auto& pair : def_remap) {
unsigned old_vreg = pair.first;
unsigned new_temp_vreg = pair.second;
Type* type = vreg_type_map.at(old_vreg);
RVOpcodes store_op = isFPVReg(old_vreg) ? RVOpcodes::FSW : (type->isPointer() ? RVOpcodes::SD : RVOpcodes::SW);
auto store = std::make_unique<MachineInstr>(store_op);
store->addOperand(std::make_unique<RegOperand>(new_temp_vreg));
store->addOperand(std::make_unique<MemOperand>(
std::make_unique<RegOperand>(PhysicalReg::S0),
std::make_unique<ImmOperand>(frame_info.spill_offsets.at(old_vreg))
));
new_instrs.push_back(std::move(store));
}
}
instrs = std::move(new_instrs);
@ -382,33 +457,12 @@ void RISCv64LinearScan::applyAllocation() {
}
}
// 辅助函数: 获取指令的use/def集合 (仅虚拟寄存器)
void RISCv64LinearScan::getInstrUseDef(const MachineInstr* instr, std::set<unsigned>& use, std::set<unsigned>& def) {
// 这个函数与图着色版本中的 getInstrUseDef 逻辑完全相同，此处直接复用
auto opcode = instr->getOpcode();
const auto& operands = instr->getOperands();
static const std::map<RVOpcodes, std::pair<std::vector<int>, std::vector<int>>> op_info = {
{RVOpcodes::ADD, {{0}, {1, 2}}}, {RVOpcodes::SUB, {{0}, {1, 2}}}, {RVOpcodes::MUL, {{0}, {1, 2}}},
{RVOpcodes::DIV, {{0}, {1, 2}}}, {RVOpcodes::REM, {{0}, {1, 2}}}, {RVOpcodes::ADDW, {{0}, {1, 2}}},
{RVOpcodes::SUBW, {{0}, {1, 2}}}, {RVOpcodes::MULW, {{0}, {1, 2}}}, {RVOpcodes::DIVW, {{0}, {1, 2}}},
{RVOpcodes::REMW, {{0}, {1, 2}}}, {RVOpcodes::SLT, {{0}, {1, 2}}}, {RVOpcodes::SLTU, {{0}, {1, 2}}},
{RVOpcodes::ADDI, {{0}, {1}}}, {RVOpcodes::ADDIW, {{0}, {1}}}, {RVOpcodes::XORI, {{0}, {1}}},
{RVOpcodes::SLTI, {{0}, {1}}}, {RVOpcodes::SLTIU, {{0}, {1}}}, {RVOpcodes::LB, {{0}, {}}},
{RVOpcodes::LH, {{0}, {}}}, {RVOpcodes::LW, {{0}, {}}}, {RVOpcodes::LD, {{0}, {}}},
{RVOpcodes::LBU, {{0}, {}}}, {RVOpcodes::LHU, {{0}, {}}}, {RVOpcodes::LWU, {{0}, {}}},
{RVOpcodes::FLW, {{0}, {}}}, {RVOpcodes::FLD, {{0}, {}}}, {RVOpcodes::SB, {{}, {0, 1}}},
{RVOpcodes::SH, {{}, {0, 1}}}, {RVOpcodes::SW, {{}, {0, 1}}}, {RVOpcodes::SD, {{}, {0, 1}}},
{RVOpcodes::FSW, {{}, {0, 1}}}, {RVOpcodes::FSD, {{}, {0, 1}}}, {RVOpcodes::BEQ, {{}, {0, 1}}},
{RVOpcodes::BNE, {{}, {0, 1}}}, {RVOpcodes::BLT, {{}, {0, 1}}}, {RVOpcodes::BGE, {{}, {0, 1}}},
{RVOpcodes::JALR, {{0}, {1}}}, {RVOpcodes::LI, {{0}, {}}}, {RVOpcodes::LA, {{0}, {}}},
{RVOpcodes::MV, {{0}, {1}}}, {RVOpcodes::SEQZ, {{0}, {1}}}, {RVOpcodes::SNEZ, {{0}, {1}}},
{RVOpcodes::RET, {{}, {}}}, {RVOpcodes::FADD_S, {{0}, {1, 2}}}, {RVOpcodes::FSUB_S, {{0}, {1, 2}}},
{RVOpcodes::FMUL_S, {{0}, {1, 2}}}, {RVOpcodes::FDIV_S, {{0}, {1, 2}}}, {RVOpcodes::FEQ_S, {{0}, {1, 2}}},
{RVOpcodes::FLT_S, {{0}, {1, 2}}}, {RVOpcodes::FLE_S, {{0}, {1, 2}}}, {RVOpcodes::FCVT_S_W, {{0}, {1}}},
{RVOpcodes::FCVT_W_S, {{0}, {1}}}, {RVOpcodes::FMV_S, {{0}, {1}}}, {RVOpcodes::FMV_W_X, {{0}, {1}}},
{RVOpcodes::FMV_X_W, {{0}, {1}}}, {RVOpcodes::FNEG_S, {{0}, {1}}}
};
// op_info 的定义已被移到函数外部的命名空间中
auto get_vreg_id_if_virtual = [&](const MachineOperand* op, std::set<unsigned>& s) {
if (op->getKind() == MachineOperand::KIND_REG) {
@ -425,9 +479,13 @@ void RISCv64LinearScan::getInstrUseDef(const MachineInstr* instr, std::set<unsig
const auto& info = op_info.at(opcode);
for (int idx : info.first) if (idx < operands.size()) get_vreg_id_if_virtual(operands[idx].get(), def);
for (int idx : info.second) if (idx < operands.size()) get_vreg_id_if_virtual(operands[idx].get(), use);
// MemOperand 的基址寄存器总是一个 use
for (const auto& op : operands) if (op->getKind() == MachineOperand::KIND_MEM) get_vreg_id_if_virtual(op.get(), use);
} else if (opcode == RVOpcodes::CALL) {
// CALL指令的特殊处理
// 第一个操作数（如果有）是def（返回值）
if (!operands.empty() && operands[0]->getKind() == MachineOperand::KIND_REG) get_vreg_id_if_virtual(operands[0].get(), def);
// 后续的寄存器操作数是use（参数）
for (size_t i = 1; i < operands.size(); ++i) if (operands[i]->getKind() == MachineOperand::KIND_REG) get_vreg_id_if_virtual(operands[i].get(), use);
}
}

2
src/include/backend/RISCv64/RISCv64LLIR.h
View File

@ -41,6 +41,8 @@ enum class PhysicalReg {
// 假设 vreg_counter 不会达到这么大的值
PHYS_REG_START_ID = 1000000,
PHYS_REG_END_ID = PHYS_REG_START_ID + 320, // 预留足够的空间
INVALID, ///< 无效寄存器标记
};
// RISC-V 指令操作码枚举

25
src/include/backend/RISCv64/RISCv64LinearScan.h
View File

@ -23,7 +23,8 @@ struct LiveInterval {
unsigned vreg = 0;
int start = -1;
int end = -1;
bool crosses_call = false;
LiveInterval(unsigned vreg) : vreg(vreg) {}
// 用于排序，按起始点从小到大
@ -76,6 +77,28 @@ private:
const std::map<unsigned, Type*>& vreg_type_map;
};
static const std::map<RVOpcodes, std::pair<std::vector<int>, std::vector<int>>> op_info = {
{RVOpcodes::ADD, {{0}, {1, 2}}}, {RVOpcodes::SUB, {{0}, {1, 2}}}, {RVOpcodes::MUL, {{0}, {1, 2}}},
{RVOpcodes::DIV, {{0}, {1, 2}}}, {RVOpcodes::REM, {{0}, {1, 2}}}, {RVOpcodes::ADDW, {{0}, {1, 2}}},
{RVOpcodes::SUBW, {{0}, {1, 2}}}, {RVOpcodes::MULW, {{0}, {1, 2}}}, {RVOpcodes::DIVW, {{0}, {1, 2}}},
{RVOpcodes::REMW, {{0}, {1, 2}}}, {RVOpcodes::SLT, {{0}, {1, 2}}}, {RVOpcodes::SLTU, {{0}, {1, 2}}},
{RVOpcodes::ADDI, {{0}, {1}}}, {RVOpcodes::ADDIW, {{0}, {1}}}, {RVOpcodes::XORI, {{0}, {1}}},
{RVOpcodes::SLTI, {{0}, {1}}}, {RVOpcodes::SLTIU, {{0}, {1}}}, {RVOpcodes::LB, {{0}, {}}},
{RVOpcodes::LH, {{0}, {}}}, {RVOpcodes::LW, {{0}, {}}}, {RVOpcodes::LD, {{0}, {}}},
{RVOpcodes::LBU, {{0}, {}}}, {RVOpcodes::LHU, {{0}, {}}}, {RVOpcodes::LWU, {{0}, {}}},
{RVOpcodes::FLW, {{0}, {}}}, {RVOpcodes::FLD, {{0}, {}}}, {RVOpcodes::SB, {{}, {0, 1}}},
{RVOpcodes::SH, {{}, {0, 1}}}, {RVOpcodes::SW, {{}, {0, 1}}}, {RVOpcodes::SD, {{}, {0, 1}}},
{RVOpcodes::FSW, {{}, {0, 1}}}, {RVOpcodes::FSD, {{}, {0, 1}}}, {RVOpcodes::BEQ, {{}, {0, 1}}},
{RVOpcodes::BNE, {{}, {0, 1}}}, {RVOpcodes::BLT, {{}, {0, 1}}}, {RVOpcodes::BGE, {{}, {0, 1}}},
{RVOpcodes::JALR, {{0}, {1}}}, {RVOpcodes::LI, {{0}, {}}}, {RVOpcodes::LA, {{0}, {}}},
{RVOpcodes::MV, {{0}, {1}}}, {RVOpcodes::SEQZ, {{0}, {1}}}, {RVOpcodes::SNEZ, {{0}, {1}}},
{RVOpcodes::RET, {{}, {}}}, {RVOpcodes::FADD_S, {{0}, {1, 2}}}, {RVOpcodes::FSUB_S, {{0}, {1, 2}}},
{RVOpcodes::FMUL_S, {{0}, {1, 2}}}, {RVOpcodes::FDIV_S, {{0}, {1, 2}}}, {RVOpcodes::FEQ_S, {{0}, {1, 2}}},
{RVOpcodes::FLT_S, {{0}, {1, 2}}}, {RVOpcodes::FLE_S, {{0}, {1, 2}}}, {RVOpcodes::FCVT_S_W, {{0}, {1}}},
{RVOpcodes::FCVT_W_S, {{0}, {1}}}, {RVOpcodes::FMV_S, {{0}, {1}}}, {RVOpcodes::FMV_W_X, {{0}, {1}}},
{RVOpcodes::FMV_X_W, {{0}, {1}}}, {RVOpcodes::FNEG_S, {{0}, {1}}}
};
} // namespace sysy
#endif // RISCV64_LINEARSCAN_H