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[backend-O1-1]调整寄存器预着色逻辑

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This commit is contained in:
Lixuanwang
2025-08-20 02:13:23 +08:00
parent dd2725796a
commit 9ff1ace10e
3 changed files with 38 additions and 30 deletions
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8
src/backend/RISCv64/RISCv64ISel.cpp
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@@ -554,6 +554,14 @@ void RISCv64ISel::selectNode(DAGNode* node) {
CurMBB->addInstruction(std::move(instr));
break;
}
case BinaryInst::kMulh: {
auto instr = std::make_unique<MachineInstr>(RVOpcodes::MULH);
instr->addOperand(std::make_unique<RegOperand>(dest_vreg));
instr->addOperand(std::make_unique<RegOperand>(lhs_vreg));
instr->addOperand(std::make_unique<RegOperand>(rhs_vreg));
CurMBB->addInstruction(std::move(instr));
break;
}
case Instruction::kDiv: {
auto instr = std::make_unique<MachineInstr>(RVOpcodes::DIVW);
instr->addOperand(std::make_unique<RegOperand>(dest_vreg));