[llvm] [llvm] Support multiple save/restore points in mir (PR #119357)

[Michael Maitland via llvm-commits]

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@@ -72,6 +89,16 @@ class CalleeSavedInfo {
   bool isRestored()                        const { return Restored; }
   void setRestored(bool R)                       { Restored = R; }
   bool isSpilledToReg()                    const { return SpilledToReg; }
+  ArrayRef<MachineBasicBlock *> spilledIn() const { return SpilledIn; }
+  ArrayRef<MachineBasicBlock *> restoredIn() const { return RestoredIn; }
+  void addSpilledIn(MachineBasicBlock *MBB) { SpilledIn.push_back(MBB); }
+  void addRestoredIn(MachineBasicBlock *MBB) { RestoredIn.push_back(MBB); }
+  void setSpilledIn(std::vector<MachineBasicBlock *> BBV) {
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michaelmaitland wrote:

There are no callers of this function. Drop it?

https://github.com/llvm/llvm-project/pull/119357