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[backend]引入浮点数支持，但目前寄存器分配存在问题

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This commit is contained in:
Lixuanwang
2025-07-30 15:07:29 +08:00
parent 860ebcd447
commit dd38bdc133
10 changed files with 748 additions and 199 deletions
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7
src/backend/RISCv64/Handler/LegalizeImmediates.cpp
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@@ -52,6 +52,8 @@ void LegalizeImmediatesPass::runOnMachineFunction(MachineFunction* mfunc) {
case RVOpcodes::ADDI:
case RVOpcodes::ADDIW: {
auto& operands = instr_ptr->getOperands();
// 确保操作数足够多，以防万一
if (operands.size() < 3) break;
auto imm_op = static_cast<ImmOperand*>(operands.back().get());
if (!isLegalImmediate(imm_op->getValue())) {
@@ -73,7 +75,7 @@ void LegalizeImmediatesPass::runOnMachineFunction(MachineFunction* mfunc) {
add->addOperand(std::move(rd_op));
add->addOperand(std::move(rs1_op));
add->addOperand(std::make_unique<RegOperand>(TEMP_REG));
if (DEEPDEBUG) {
std::cerr << " New sequence:\n ";
temp_printer.printInstruction(li.get(), true);
@@ -92,7 +94,8 @@ void LegalizeImmediatesPass::runOnMachineFunction(MachineFunction* mfunc) {
// 处理所有内存加载/存储指令
case RVOpcodes::LB: case RVOpcodes::LH: case RVOpcodes::LW: case RVOpcodes::LD:
case RVOpcodes::LBU: case RVOpcodes::LHU: case RVOpcodes::LWU:
case RVOpcodes::SB: case RVOpcodes::SH: case RVOpcodes::SW: case RVOpcodes::SD: {
case RVOpcodes::SB: case RVOpcodes::SH: case RVOpcodes::SW: case RVOpcodes::SD:
case RVOpcodes::FLW: case RVOpcodes::FSW: {
auto& operands = instr_ptr->getOperands();
auto mem_op = static_cast<MemOperand*>(operands.back().get());
auto offset_op = mem_op->getOffset();