llvm::MCParsedAsmOperand::isMemUseUpRegs

isMemUseUpRegs ‐ Is memory operand use up regs, for example, intel MS inline asm may use ARR[baseReg + IndexReg + ...]which may use up regs in [...]expr, so ARR[baseReg + IndexReg + ...]can not use extra reg for ARR. For example, calculating ARR address to a reg or use another base reg in PIC model.