text: //===-- main.cpp ------------------------------------------------*- C++ -*-===//
  //
  // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
  // See https://llvm.org/LICENSE.txt for license information.
  // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  //
  //===----------------------------------------------------------------------===//
  
  volatile int x;
  
  void __attribute__((noinline)) sink() {
    x++; //% self.filecheck("bt", "main.cpp", "-implicit-check-not=artificial")
    // CHECK: frame #0: 0x{{[0-9a-f]+}} a.out`sink() at main.cpp:[[@LINE-1]]:4 [opt]
    // CHECK-NEXT: func2{{.*}} [opt] [artificial]
    // CHECK-NEXT: main{{.*}} [opt]
  }
  
  void __attribute__((noinline)) func2() {
    sink(); /* tail */
  }
  
  void __attribute__((noinline)) func1() { sink(); /* tail */ }
  
  int __attribute__((disable_tail_calls)) main(int argc, char **) {
    // The sequences `main -> f{1,2} -> sink` are both plausible. Test that
    // return-pc call site info allows lldb to pick the correct sequence.
    func2();
    if (argc == 100)
      func1();
    return 0;
  }
  