+/// CreateFixedObject - Create a new object at a fixed location on the stack.
+/// All fixed objects should be created before other objects are created for
+/// efficiency. By default, fixed objects are immutable. This returns an
+/// index with a negative value.
+///
+int MachineFrameInfo::CreateFixedObject(uint64_t Size, int64_t SPOffset,
+ bool Immutable) {
+ assert(Size != 0 && "Cannot allocate zero size fixed stack objects!");
+ Objects.insert(Objects.begin(), StackObject(Size, 1, SPOffset, Immutable));
+ return -++NumFixedObjects;
+}
+
+
+BitVector
+MachineFrameInfo::getPristineRegs(const MachineBasicBlock *MBB) const {
+ assert(MBB && "MBB must be valid");
+ const MachineFunction *MF = MBB->getParent();
+ assert(MF && "MBB must be part of a MachineFunction");
+ const TargetMachine &TM = MF->getTarget();
+ const TargetRegisterInfo *TRI = TM.getRegisterInfo();
+ BitVector BV(TRI->getNumRegs());
+
+ // Before CSI is calculated, no registers are considered pristine. They can be
+ // freely used and PEI will make sure they are saved.
+ if (!isCalleeSavedInfoValid())
+ return BV;
+
+ for (const unsigned *CSR = TRI->getCalleeSavedRegs(MF); CSR && *CSR; ++CSR)
+ BV.set(*CSR);
+
+ // The entry MBB always has all CSRs pristine.
+ if (MBB == &MF->front())
+ return BV;
+
+ // On other MBBs the saved CSRs are not pristine.
+ const std::vector<CalleeSavedInfo> &CSI = getCalleeSavedInfo();
+ for (std::vector<CalleeSavedInfo>::const_iterator I = CSI.begin(),
+ E = CSI.end(); I != E; ++I)
+ BV.reset(I->getReg());
+
+ return BV;
+}
+
+
+void MachineFrameInfo::print(const MachineFunction &MF, raw_ostream &OS) const{
+ const TargetFrameInfo *FI = MF.getTarget().getFrameInfo();
+ int ValOffset = (FI ? FI->getOffsetOfLocalArea() : 0);