154     unsigned StackTop = 0;      // The current top of the FP stack.  member
175       for (unsigned i = 0; i != StackTop; ++i) {  in dumpStack()
192       return Slot < StackTop && Stack[Slot] == RegNo;  in isLive()
197       if (STi >= StackTop)  in getStackEntry()
199       return Stack[StackTop-1-STi];  in getStackEntry()
205       return StackTop - 1 - getSlot(RegNo) + X86::ST0;  in getSTReg()
211       if (StackTop >= 8)  in pushReg()
213       Stack[StackTop] = Reg;  in pushReg()
214       RegMap[Reg] = StackTop++;  in pushReg()
219       if (StackTop == 0)  in popReg()
221       RegMap[Stack[--StackTop]] = ~0;     // Update state  in popReg()
224     bool isAtTop(unsigned RegNo) const { return getSlot(RegNo) == StackTop-1; }  in isAtTop()
236       if (RegMap[RegOnTop] >= StackTop)  in moveToTop()
238       std::swap(Stack[RegMap[RegOnTop]], Stack[StackTop-1]);  in moveToTop()
347   StackTop = 0;  in runOnMachineFunction()
511   StackTop = 0;  in setupBlockStack()
573     Bundle.FixCount = StackTop;  in finishBlockStack()
574     for (unsigned i = 0; i < StackTop; ++i)  in finishBlockStack()
878   unsigned TopReg   = Stack[StackTop-1];  in freeStackSlotBefore()
882   Stack[--StackTop] = ~0;  in freeStackSlotBefore()
893   for (unsigned i = 0; i < StackTop; ++i) {  in adjustLiveRegs()
919     while (StackTop) {  in adjustLiveRegs()
948   assert(StackTop == countPopulation(Mask) && "Live count mismatch");  in adjustLiveRegs()
1007   while (StackTop > 0)  in handleCall()
1060     assert(StackTop == 1 && FirstFPRegOp == getStackEntry(0) &&  in handleReturn()
1066     StackTop = 0;  in handleReturn()
1073   if (StackTop == 1) {  in handleReturn()
1085   assert(StackTop == 2 && "Must have two values live!");  in handleReturn()
1098   StackTop = 0;  in handleReturn()
1162     if (StackTop == 0)  in handleOneArgFP()
1164     --StackTop;  in handleOneArgFP()
1194     if (StackTop == 0)  in handleOneArgFPRW()
1196     --StackTop;  in handleOneArgFPRW()
1380   assert(UpdatedSlot < StackTop && Dest < 7);  in handleTwoArgFP()
1656     StackTop -= NumSTPopped;  in handleSpecialFP()