- const uint16_t *getCalleeSavedRegs(const MachineFunction* MF = 0) const;
- const uint32_t *getCallPreservedMask(CallingConv::ID) const;
+ const MCPhysReg *
+ getCalleeSavedRegs(const MachineFunction* MF) const override;
+ const uint32_t *getCallPreservedMask(const MachineFunction &MF,
+ CallingConv::ID) const override;
+ const uint32_t *getNoPreservedMask() const override;
+
+ // Calls involved in thread-local variable lookup save more registers than
+ // normal calls, so they need a different mask to represent this.
+ const uint32_t *getDarwinTLSCallPreservedMask() const;