diff options
| -rw-r--r-- | include/llvm/Target/MRegisterInfo.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/include/llvm/Target/MRegisterInfo.h b/include/llvm/Target/MRegisterInfo.h index a45d53a..c5a4187 100644 --- a/include/llvm/Target/MRegisterInfo.h +++ b/include/llvm/Target/MRegisterInfo.h @@ -29,6 +29,7 @@ class MachineInstr; class MachineLocation; class MachineMove; class TargetRegisterClass; +class CalleeSavedInfo; /// TargetRegisterDesc - This record contains all of the information known about /// a particular register. The AliasSet field (if not null) contains a pointer @@ -319,6 +320,26 @@ public: // immediates and memory. FIXME: Move these to TargetInstrInfo.h. // + /// spillCalleeSaveRegisters - Issues instruction(s) to spill all callee saved + /// registers and returns true if it isn't possible / profitable to do so by + /// issuing a series of store instructions via storeRegToStackSlot(). Returns + /// false otherwise. + virtual bool spillCalleeSaveRegisters(MachineBasicBlock &MBB, + MachineBasicBlock::iterator MI, + const std::vector<CalleeSavedInfo> &CSI) const { + return false; + } + + /// restoreCalleeSaveRegisters - Issues instruction(s) to restore all callee + /// saved registers and returns true if it isn't possible / profitable to do + /// so by issuing a series of load instructions via loadRegToStackSlot(). + /// Returns false otherwise. + virtual bool restoreCalleeSaveRegisters(MachineBasicBlock &MBB, + MachineBasicBlock::iterator MI, + const std::vector<CalleeSavedInfo> &CSI) const { + return false; + } + virtual void storeRegToStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, unsigned SrcReg, int FrameIndex, |