[AArch64] Use helper class for emitting CFI instructions into MIR

Author: s-barannikov

llvm/include/llvm/CodeGen/CFIInstBuilder.h

@@ -63,20 +63,33 @@ class CFIInstBuilder {
         nullptr, TRI.getDwarfRegNum(Reg, IsEH)));
   }
 
-  void buildDefCFAOffset(int64_t Offset) const {
-    insertCFIInst(MCCFIInstruction::cfiDefCfaOffset(nullptr, Offset));
+  void buildDefCFAOffset(int64_t Offset, MCSymbol *Label = nullptr) const {
+    insertCFIInst(MCCFIInstruction::cfiDefCfaOffset(Label, Offset));
   }
 
   void buildOffset(MCRegister Reg, int64_t Offset) const {
     insertCFIInst(MCCFIInstruction::createOffset(
         nullptr, TRI.getDwarfRegNum(Reg, IsEH), Offset));
   }
 
+  void buildNegateRAState() const {
+    insertCFIInst(MCCFIInstruction::createNegateRAState(nullptr));
+  }
+
+  void buildNegateRAStateWithPC() const {
+    insertCFIInst(MCCFIInstruction::createNegateRAStateWithPC(nullptr));
+  }
+
   void buildRestore(MCRegister Reg) const {
     insertCFIInst(MCCFIInstruction::createRestore(
         nullptr, TRI.getDwarfRegNum(Reg, IsEH)));
   }
 
+  void buildSameValue(MCRegister Reg) const {
+    insertCFIInst(MCCFIInstruction::createSameValue(
+        nullptr, TRI.getDwarfRegNum(Reg, IsEH)));
+  }
+
   void buildEscape(StringRef Bytes, StringRef Comment = "") const {
     insertCFIInst(
         MCCFIInstruction::createEscape(nullptr, Bytes, SMLoc(), Comment));