Merge pull request swiftlang#9889 from rastogishubham/FixDiffStable

[InstrRef] Fix mismatch between LiveDebugValues and salvageCopySSA

Author: adrian-prantl

llvm/lib/CodeGen/MachineFunction.cpp

@@ -1066,7 +1066,7 @@ auto MachineFunction::salvageCopySSA(
   // Check whether this copy-like instruction has already been salvaged into
   // an operand pair.
   Register Dest;
-  if (auto CopyDstSrc = TII.isCopyInstr(MI)) {
+  if (auto CopyDstSrc = TII.isCopyLikeInstr(MI)) {
     Dest = CopyDstSrc->Destination->getReg();
   } else {
     assert(MI.isSubregToReg());
@@ -1150,7 +1150,7 @@ auto MachineFunction::salvageCopySSAImpl(MachineInstr &MI)
     CurInst = Inst.getIterator();
 
     // Any non-copy instruction is the defining instruction we're seeking.
-    if (!Inst.isCopyLike() && !TII.isCopyInstr(Inst))
+    if (!Inst.isCopyLike() && !TII.isCopyLikeInstr(Inst))
       break;
     State = GetRegAndSubreg(Inst);
   };