Move callee-saved regs spills / reloads to TFI

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120228 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 74 deletions

diff --git a/lib/Target/ARM/Thumb1InstrInfo.cpp b/lib/Target/ARM/Thumb1InstrInfo.cpp
index 7e20a0ff49..3fbb43340c 100644
--- a/lib/Target/ARM/Thumb1InstrInfo.cpp
+++ b/lib/Target/ARM/Thumb1InstrInfo.cpp
@@ -109,77 +109,3 @@ loadRegFromStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
                    .addFrameIndex(FI).addImm(0).addMemOperand(MMO));
   }
 }
-
-bool Thumb1InstrInfo::
-spillCalleeSavedRegisters(MachineBasicBlock &MBB,
-                          MachineBasicBlock::iterator MI,
-                          const std::vector<CalleeSavedInfo> &CSI,
-                          const TargetRegisterInfo *TRI) const {
-  if (CSI.empty())
-    return false;
-
-  DebugLoc DL;
-  if (MI != MBB.end()) DL = MI->getDebugLoc();
-
-  MachineInstrBuilder MIB = BuildMI(MBB, MI, DL, get(ARM::tPUSH));
-  AddDefaultPred(MIB);
-  for (unsigned i = CSI.size(); i != 0; --i) {
-    unsigned Reg = CSI[i-1].getReg();
-    bool isKill = true;
-
-    // Add the callee-saved register as live-in unless it's LR and
-    // @llvm.returnaddress is called. If LR is returned for @llvm.returnaddress
-    // then it's already added to the function and entry block live-in sets.
-    if (Reg == ARM::LR) {
-      MachineFunction &MF = *MBB.getParent();
-      if (MF.getFrameInfo()->isReturnAddressTaken() &&
-          MF.getRegInfo().isLiveIn(Reg))
-        isKill = false;
-    }
-
-    if (isKill)
-      MBB.addLiveIn(Reg);
-
-    MIB.addReg(Reg, getKillRegState(isKill));
-  }
-  return true;
-}
-
-bool Thumb1InstrInfo::
-restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
-                            MachineBasicBlock::iterator MI,
-                            const std::vector<CalleeSavedInfo> &CSI,
-                            const TargetRegisterInfo *TRI) const {
-  MachineFunction &MF = *MBB.getParent();
-  ARMFunctionInfo *AFI = MF.getInfo<ARMFunctionInfo>();
-  if (CSI.empty())
-    return false;
-
-  bool isVarArg = AFI->getVarArgsRegSaveSize() > 0;
-  DebugLoc DL = MI->getDebugLoc();
-  MachineInstrBuilder MIB = BuildMI(MF, DL, get(ARM::tPOP));
-  AddDefaultPred(MIB);
-
-  bool NumRegs = false;
-  for (unsigned i = CSI.size(); i != 0; --i) {
-    unsigned Reg = CSI[i-1].getReg();
-    if (Reg == ARM::LR) {
-      // Special epilogue for vararg functions. See emitEpilogue
-      if (isVarArg)
-        continue;
-      Reg = ARM::PC;
-      (*MIB).setDesc(get(ARM::tPOP_RET));
-      MI = MBB.erase(MI);
-    }
-    MIB.addReg(Reg, getDefRegState(true));
-    NumRegs = true;
-  }
-
-  // It's illegal to emit pop instruction without operands.
-  if (NumRegs)
-    MBB.insert(MI, &*MIB);
-  else
-    MF.DeleteMachineInstr(MIB);
-
-  return true;
-}