MandarinInstrInfo.cpp
/// isStoreToStackSlot - If the specified machine instruction is a direct
/// store to a stack slot, return the virtual or physical register number of
/// the source reg along with the FrameIndex of the loaded stack slot.  If
/// not, return 0.  This predicate must return 0 if the instruction has
/// any side effects other than storing to the stack slot.
If the specified machine instruction is a direct
store to a stack slot, return the virtual or physical register number of
the source reg along with the FrameIndex of the loaded stack slot.  If
not, return 0.  This predicate must return 0 if the instruction has
any side effects other than storing to the stack slot.
If the specified machine instruction is a direct store to a stack slot return the virtual or physical register number of the source reg along with the FrameIndex of the loaded stack slot . If not return 0 . This predicate must return 0 if the instruction has any side effects other than storing to the stack slot .
unsigned MandarinInstrInfo::isStoreToStackSlot(const MachineInstr *MI,
                                            int &FrameIndex) const
{
	MI->dump();
  return 0;
}
unsigned MandarinInstrInfo :: isStoreToStackSlot ( const MachineInstr * MI , int & FrameIndex ) const { MI -> dump ( ) ; return 0 ; }
isStoreToStackSlot - If the specified machine instruction is a direct
store to a stack slot, return the virtual or physical register number of
the source reg along with the FrameIndex of the loaded stack slot.
isStoreToStackSlot - If the specified machine instruction is a direct store to a stack slot return the virtual or physical register number of the source reg along with the FrameIndex of the loaded stack slot .
/*if (MI->getOpcode() == SP::STri ||
      MI->getOpcode() == SP::STXri ||
      MI->getOpcode() == SP::STFri ||
      MI->getOpcode() == SP::STDFri ||
      MI->getOpcode() == SP::STQFri) {
    if (MI->getOperand(0).isFI() && MI->getOperand(1).isImm() &&
        MI->getOperand(1).getImm() == 0) {
      FrameIndex = MI->getOperand(0).getIndex();
      return MI->getOperand(2).getReg();
    }
  }*/