146     unsigned StackTop;          // The current top of the FP stack.  member
167       for (unsigned i = 0; i != StackTop; ++i) {  in dumpStack()
184       return Slot < StackTop && Stack[Slot] == RegNo;  in isLive()
189       if (STi >= StackTop)  in getStackEntry()
191       return Stack[StackTop-1-STi];  in getStackEntry()
197       return StackTop - 1 - getSlot(RegNo) + X86::ST0;  in getSTReg()
203       if (StackTop >= 8)  in pushReg()
205       Stack[StackTop] = Reg;  in pushReg()
206       RegMap[Reg] = StackTop++;  in pushReg()
209     bool isAtTop(unsigned RegNo) const { return getSlot(RegNo) == StackTop-1; }  in isAtTop()
221       if (RegMap[RegOnTop] >= StackTop)  in moveToTop()
223       std::swap(Stack[RegMap[RegOnTop]], Stack[StackTop-1]);  in moveToTop()
325   StackTop = 0;  in runOnMachineFunction()
468   StackTop = 0;  in setupBlockStack()
530     Bundle.FixCount = StackTop;  in finishBlockStack()
531     for (unsigned i = 0; i < StackTop; ++i)  in finishBlockStack()
794   if (StackTop == 0)  in popStackAfter()
796   RegMap[Stack[--StackTop]] = ~0;     // Update state  in popStackAfter()
831   unsigned TopReg   = Stack[StackTop-1];  in freeStackSlotBefore()
835   Stack[--StackTop] = ~0;  in freeStackSlotBefore()
846   for (unsigned i = 0; i < StackTop; ++i) {  in adjustLiveRegs()
871     while (StackTop) {  in adjustLiveRegs()
900   assert(StackTop == countPopulation(Mask) && "Live count mismatch");  in adjustLiveRegs()
1001     assert(StackTop == 1 && FirstFPRegOp == getStackEntry(0) &&  in handleReturn()
1007     StackTop = 0;  in handleReturn()
1014   if (StackTop == 1) {  in handleReturn()
1026   assert(StackTop == 2 && "Must have two values live!");  in handleReturn()
1039   StackTop = 0;  in handleReturn()
1099     if (StackTop == 0)  in handleOneArgFP()
1101     --StackTop;  in handleOneArgFP()
1131     if (StackTop == 0)  in handleOneArgFPRW()
1133     --StackTop;  in handleOneArgFPRW()
1314   assert(UpdatedSlot < StackTop && Dest < 7);  in handleTwoArgFP()
1587     StackTop -= NumSTPopped;  in handleSpecialFP()