[AArch64] Use helper class for emitting CFI instructions into MIR (NFCI) (llvm#136004)

Pull Request: llvm#136004

Author: s-barannikov

llvm/include/llvm/CodeGen/CFIInstBuilder.h

@@ -67,8 +67,8 @@ 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 buildAdjustCFAOffset(int64_t Adjustment) const {
@@ -80,6 +80,14 @@ class CFIInstBuilder {
         nullptr, TRI.getDwarfRegNum(Reg, IsEH), Offset));
   }
 
+  void buildNegateRAState() const {
+    insertCFIInst(MCCFIInstruction::createNegateRAState(nullptr));
+  }
+
+  void buildNegateRAStateWithPC() const {
+    insertCFIInst(MCCFIInstruction::createNegateRAStateWithPC(nullptr));
+  }
+
   void buildRegister(MCRegister Reg1, MCRegister Reg2) const {
     insertCFIInst(MCCFIInstruction::createRegister(
         nullptr, TRI.getDwarfRegNum(Reg1, IsEH),