| //===-- main.cpp ------------------------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| 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: frame #1: 0x{{[0-9a-f]+}} a.out`func3{{.*}} [opt] [artificial] |
| // CHECK-NEXT: frame #2: 0x{{[0-9a-f]+}} a.out`func2{{.*}} [opt] |
| // CHECK-NEXT: frame #3: 0x{{[0-9a-f]+}} a.out`func1{{.*}} [opt] [artificial] |
| // CHECK-NEXT: frame #4: 0x{{[0-9a-f]+}} a.out`main{{.*}} [opt] |
| } |
| |
| void __attribute__((noinline)) func3() { sink(); /* tail */ } |
| |
| void __attribute__((disable_tail_calls, noinline)) func2() { func3(); /* regular */ } |
| |
| void __attribute__((noinline)) func1() { func2(); /* tail */ } |
| |
| int __attribute__((disable_tail_calls)) main() { |
| func1(); /* regular */ |
| return 0; |
| } |
