[BOLT] Recognize paciasp and autiasp instructions

Author: bgergely0

bolt/include/bolt/Core/MCPlusBuilder.h

@@ -648,6 +648,13 @@ class MCPlusBuilder {
     llvm_unreachable("not implemented");
     return false;
   }
+  virtual bool isPAuth(MCInst &Inst) const {
+    llvm_unreachable("not implemented");
+  }
+
+  virtual bool isPSign(MCInst &Inst) const {
+    llvm_unreachable("not implemented");
+  }
 
   virtual bool isCleanRegXOR(const MCInst &Inst) const {
     llvm_unreachable("not implemented");

bolt/lib/Target/AArch64/AArch64MCPlusBuilder.cpp

@@ -316,6 +316,12 @@ class AArch64MCPlusBuilder : public MCPlusBuilder {
     }
     return false;
   }
+  bool isPAuth(MCInst &Inst) const override {
+    return Inst.getOpcode() == AArch64::AUTIASP;
+  }
+  bool isPSign(MCInst &Inst) const override {
+    return Inst.getOpcode() == AArch64::PACIASP;
+  }
 
   bool isRegToRegMove(const MCInst &Inst, MCPhysReg &From,
                       MCPhysReg &To) const override {