[backend]继续增强寄存器分配器健壮性

src/backend/RISCv64/RISCv64AsmPrinter.cpp

@@ -5,23 +5,6 @@
 #include <iostream>
 namespace sysy {
 
-// 检查是否为内存加载/存储指令，以处理特殊的打印格式
-bool isMemoryOp(RVOpcodes opcode) {
-    switch (opcode) {
-        // --- 整数加载/存储 (原有逻辑) ---
-        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::FLW:
-        case RVOpcodes::FSW:
-        // 如果未来支持双精度，也在这里添加FLD/FSD
-        // case RVOpcodes::FLD:
-        // case RVOpcodes::FSD:
-            return true;
-        default:
-            return false;
-    }
-}
 
 RISCv64AsmPrinter::RISCv64AsmPrinter(MachineFunction* mfunc) : MFunc(mfunc) {}