return 0;
}
-static bool isEAXLiveIn(MachineFunction &MF) {
- for (MachineRegisterInfo::livein_iterator II = MF.getRegInfo().livein_begin(),
- EE = MF.getRegInfo().livein_end(); II != EE; ++II) {
- unsigned Reg = II->first;
+static bool isEAXLiveIn(MachineBasicBlock &MBB) {
+ for (MachineBasicBlock::RegisterMaskPair RegMask : MBB.liveins()) {
+ unsigned Reg = RegMask.PhysReg;
if (Reg == X86::RAX || Reg == X86::EAX || Reg == X86::AX ||
Reg == X86::AH || Reg == X86::AL)
// load the offset into a register and do one sub/add
unsigned Reg = 0;
- if (isSub && !isEAXLiveIn(*MBB.getParent()))
+ if (isSub && !isEAXLiveIn(MBB))
Reg = (unsigned)(Is64Bit ? X86::RAX : X86::EAX);
else
Reg = findDeadCallerSavedReg(MBB, MBBI, TRI, Is64Bit);
if (IsWin64Prologue && !IsFunclet && TRI->needsStackRealignment(MF))
AlignedNumBytes = RoundUpToAlignment(AlignedNumBytes, MaxAlign);
if (AlignedNumBytes >= StackProbeSize && UseStackProbe) {
- // Check whether EAX is livein for this function.
- bool isEAXAlive = isEAXLiveIn(MF);
+ // Check whether EAX is livein for this block.
+ bool isEAXAlive = isEAXLiveIn(MBB);
if (isEAXAlive) {
// Sanity check that EAX is not livein for this function.