BitVector PPCRegisterInfo::getReservedRegs(const MachineFunction &MF) const {
BitVector Reserved(getNumRegs());
const PPCSubtarget &Subtarget = MF.getSubtarget<PPCSubtarget>();
- const PPCFrameLowering *PPCFI =
- static_cast<const PPCFrameLowering *>(Subtarget.getFrameLowering());
+ const PPCFrameLowering *TFI = getFrameLowering(MF);
// The ZERO register is not really a register, but the representation of r0
// when used in instructions that treat r0 as the constant 0.
Reserved.set(PPC::X1);
Reserved.set(PPC::X13);
- if (PPCFI->needsFP(MF))
+ if (TFI->needsFP(MF))
Reserved.set(PPC::X31);
if (hasBasePointer(MF))
}
}
- if (PPCFI->needsFP(MF))
+ if (TFI->needsFP(MF))
Reserved.set(PPC::R31);
if (hasBasePointer(MF)) {
unsigned PPCRegisterInfo::getRegPressureLimit(const TargetRegisterClass *RC,
MachineFunction &MF) const {
- const PPCSubtarget &Subtarget = MF.getSubtarget<PPCSubtarget>();
- const TargetFrameLowering *TFI = Subtarget.getFrameLowering();
+ const PPCFrameLowering *TFI = getFrameLowering(MF);
const unsigned DefaultSafety = 1;
switch (RC->getID()) {
unsigned FrameSize = MFI->getStackSize();
// Get stack alignments.
- unsigned TargetAlign = Subtarget.getFrameLowering()->getStackAlignment();
+ const PPCFrameLowering *TFI = getFrameLowering(MF);
+ unsigned TargetAlign = TFI->getStackAlignment();
unsigned MaxAlign = MFI->getMaxAlignment();
assert((maxCallFrameSize & (MaxAlign-1)) == 0 &&
"Maximum call-frame size not sufficiently aligned");
}
unsigned PPCRegisterInfo::getFrameRegister(const MachineFunction &MF) const {
- const PPCSubtarget &Subtarget = MF.getSubtarget<PPCSubtarget>();
- const TargetFrameLowering *TFI = Subtarget.getFrameLowering();
+ const PPCFrameLowering *TFI = getFrameLowering(MF);
if (!TM.isPPC64())
return TFI->hasFP(MF) ? PPC::R31 : PPC::R1;
return needsStackRealignment(MF);
}
-bool PPCRegisterInfo::canRealignStack(const MachineFunction &MF) const {
- if (MF.getFunction()->hasFnAttribute("no-realign-stack"))
- return false;
-
- return true;
-}
-
-bool PPCRegisterInfo::needsStackRealignment(const MachineFunction &MF) const {
- const PPCSubtarget &Subtarget = MF.getSubtarget<PPCSubtarget>();
- const MachineFrameInfo *MFI = MF.getFrameInfo();
- const Function *F = MF.getFunction();
- unsigned StackAlign = Subtarget.getFrameLowering()->getStackAlignment();
- bool requiresRealignment = ((MFI->getMaxAlignment() > StackAlign) ||
- F->hasFnAttribute(Attribute::StackAlignment));
-
- return requiresRealignment && canRealignStack(MF);
-}
-
/// Returns true if the instruction's frame index
/// reference would be better served by a base register other than FP
/// or SP. Used by LocalStackFrameAllocation to determine which frame index
MachineBasicBlock &MBB = *MI->getParent();
MachineFunction &MF = *MBB.getParent();
- const PPCSubtarget &Subtarget = MF.getSubtarget<PPCSubtarget>();
- const PPCFrameLowering *PPCFI =
- static_cast<const PPCFrameLowering *>(Subtarget.getFrameLowering());
- unsigned StackEst =
- PPCFI->determineFrameLayout(MF, false, true);
+ const PPCFrameLowering *TFI = getFrameLowering(MF);
+ unsigned StackEst = TFI->determineFrameLayout(MF, false, true);
// If we likely don't need a stack frame, then we probably don't need a
// virtual base register either.
MI->getOpcode() == TargetOpcode::PATCHPOINT ||
(isInt<16>(Offset) && (!usesIXAddr(*MI) || (Offset & 3) == 0));
}
-