1 /// Test instrumentation can handle various linkages.
2 // RUN: %clang_profgen -fcoverage-mapping %s -o %t
3 // RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t
4 // RUN: llvm-profdata show %t.profraw --all-functions | FileCheck %s
5 
6 // RUN: %clang_profgen -fcoverage-mapping -ffunction-sections -Wl,-opt:ref %s -o %t
7 // RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t
8 // RUN: llvm-profdata show %t.profraw --all-functions | FileCheck %s
9 
10 // CHECK:      {{.*}}external{{.*}}:
11 // CHECK-NEXT:    Hash:
12 // CHECK-NEXT:    Counters: 1
13 // CHECK-NEXT:    Function count: 1
14 // CHECK:      {{.*}}weak{{.*}}:
15 // CHECK-NEXT:    Hash:
16 // CHECK-NEXT:    Counters: 1
17 // CHECK-NEXT:    Function count: 1
18 // CHECK:      main:
19 // CHECK-NEXT:    Hash:
20 // CHECK-NEXT:    Counters: 1
21 // CHECK-NEXT:    Function count: 1
22 // CHECK:      {{.*}}internal{{.*}}:
23 // CHECK-NEXT:    Hash:
24 // CHECK-NEXT:    Counters: 1
25 // CHECK-NEXT:    Function count: 1
26 // CHECK:      {{.*}}linkonce_odr{{.*}}:
27 // CHECK-NEXT:    Hash:
28 // CHECK-NEXT:    Counters: 1
29 // CHECK-NEXT:    Function count: 1
30 
31 #include <stdio.h>
32 
33 void discarded0() {}
34 __attribute__((weak)) void discarded1() {}
35 
36 void external() { puts("external"); }
37 __attribute__((weak)) void weak() { puts("weak"); }
38 static void internal() { puts("internal"); }
39 __attribute__((noinline)) inline void linkonce_odr() { puts("linkonce_odr"); }
40 
41 int main() {
42   internal();
43   external();
44   weak();
45   linkonce_odr();
46 }
47