diff options
Diffstat (limited to 'lib/Target/X86/X86InstrInfo.h')
| -rw-r--r-- | lib/Target/X86/X86InstrInfo.h | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/lib/Target/X86/X86InstrInfo.h b/lib/Target/X86/X86InstrInfo.h index 6eb07d5..c6daa25 100644 --- a/lib/Target/X86/X86InstrInfo.h +++ b/lib/Target/X86/X86InstrInfo.h @@ -449,13 +449,41 @@ public: unsigned &SrcSubIdx, unsigned &DstSubIdx) const; unsigned isLoadFromStackSlot(const MachineInstr *MI, int &FrameIndex) const; + /// isLoadFromStackSlotPostFE - Check for post-frame ptr elimination + /// stack locations as well. This uses a heuristic so it isn't + /// reliable for correctness. + unsigned isLoadFromStackSlotPostFE(const MachineInstr *MI, + int &FrameIndex) const; + + /// hasLoadFromStackSlot - If the specified machine instruction has + /// a load from a stack slot, return true along with the FrameIndex + /// of the loaded stack slot. If not, return false. Unlike + /// isLoadFromStackSlot, this returns true for any instructions that + /// loads from the stack. This is a hint only and may not catch all + /// cases. + bool hasLoadFromStackSlot(const MachineInstr *MI, int &FrameIndex) const; + unsigned isStoreToStackSlot(const MachineInstr *MI, int &FrameIndex) const; + /// isStoreToStackSlotPostFE - Check for post-frame ptr elimination + /// stack locations as well. This uses a heuristic so it isn't + /// reliable for correctness. + unsigned isStoreToStackSlotPostFE(const MachineInstr *MI, + int &FrameIndex) const; + + /// hasStoreToStackSlot - If the specified machine instruction has a + /// store to a stack slot, return true along with the FrameIndex of + /// the loaded stack slot. If not, return false. Unlike + /// isStoreToStackSlot, this returns true for any instructions that + /// loads from the stack. This is a hint only and may not catch all + /// cases. + bool hasStoreToStackSlot(const MachineInstr *MI, int &FrameIndex) const; bool isReallyTriviallyReMaterializable(const MachineInstr *MI, AliasAnalysis *AA) const; void reMaterialize(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, unsigned DestReg, unsigned SubIdx, - const MachineInstr *Orig) const; + const MachineInstr *Orig, + const TargetRegisterInfo *TRI) const; /// convertToThreeAddress - This method must be implemented by targets that /// set the M_CONVERTIBLE_TO_3_ADDR flag. When this flag is set, the target @@ -610,6 +638,11 @@ private: unsigned OpNum, const SmallVectorImpl<MachineOperand> &MOs, unsigned Size, unsigned Alignment) const; + + /// isFrameOperand - Return true and the FrameIndex if the specified + /// operand and follow operands form a reference to the stack frame. + bool isFrameOperand(const MachineInstr *MI, unsigned int Op, + int &FrameIndex) const; }; } // End llvm namespace |
