diff options
Diffstat (limited to 'llvm/lib/Target/X86/X86RegisterInfo.h')
| -rw-r--r-- | llvm/lib/Target/X86/X86RegisterInfo.h | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/llvm/lib/Target/X86/X86RegisterInfo.h b/llvm/lib/Target/X86/X86RegisterInfo.h index 3435c0a10b04..7fd10ddd1a15 100644 --- a/llvm/lib/Target/X86/X86RegisterInfo.h +++ b/llvm/lib/Target/X86/X86RegisterInfo.h @@ -121,13 +121,16 @@ public: bool canRealignStack(const MachineFunction &MF) const override; - bool hasReservedSpillSlot(const MachineFunction &MF, Register Reg, - int &FrameIdx) const override; - void eliminateFrameIndex(MachineBasicBlock::iterator MI, int SPAdj, unsigned FIOperandNum, RegScavenger *RS = nullptr) const override; + /// findDeadCallerSavedReg - Return a caller-saved register that isn't live + /// when it reaches the "return" instruction. We can then pop a stack object + /// to this register without worry about clobbering it. + unsigned findDeadCallerSavedReg(MachineBasicBlock &MBB, + MachineBasicBlock::iterator &MBBI) const; + // Debug information queries. Register getFrameRegister(const MachineFunction &MF) const override; unsigned getPtrSizedFrameRegister(const MachineFunction &MF) const; @@ -141,6 +144,11 @@ public: Register getFramePtr() const { return FramePtr; } // FIXME: Move to FrameInfok unsigned getSlotSize() const { return SlotSize; } + + bool getRegAllocationHints(Register VirtReg, ArrayRef<MCPhysReg> Order, + SmallVectorImpl<MCPhysReg> &Hints, + const MachineFunction &MF, const VirtRegMap *VRM, + const LiveRegMatrix *Matrix) const override; }; } // End llvm namespace |