1/*
2RUN: rm -fr %t.profdir
3RUN: %clang_profgen=%t.profdir/default_%m.profraw -o %t -O2 %s
4RUN: %run %t 2>&1 | FileCheck %s --check-prefix=NO_EXIT_WRITE
5RUN: llvm-profdata merge -o %t.profdata %t.profdir
6RUN: %clang_profuse=%t.profdata -o - -S -emit-llvm %s | FileCheck %s --check-prefix=PROF
7
8NO_EXIT_WRITE: Profile data not written to file: already written
9*/
10
11int __llvm_profile_dump(void);
12void __llvm_profile_reset_counters(void);
13int foo(int);
14int bar(int);
15int skip(int);
16
17int main(int argc, const char *argv[]) {
18 int Ret = foo(0); /* region 1 */
19 __llvm_profile_dump();
20
21 /* not profiled -- cleared later. */
22 skip(0); /* skipped region */
23
24 __llvm_profile_reset_counters();
25 Ret += bar(0); /* region 2 */
26 __llvm_profile_dump();
27
28 skip(1);
29
30 __llvm_profile_reset_counters();
31 /* foo's profile will be merged. */
32 foo(1); /* region 3 */
33 __llvm_profile_dump();
34
35 return Ret;
36}
37
38__attribute__((noinline)) int foo(int X) {
39 /* PROF: define {{.*}} @foo({{.*}}!prof ![[ENT:[0-9]+]]
40 PROF: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}, !prof ![[PD1:[0-9]+]]
41 */
42 return X <= 0 ? -X : X;
43}
44
45__attribute__((noinline)) int skip(int X) {
46 /* PROF: define {{.*}} @skip(
47 PROF: br i1 %{{.*}}, label %{{.*}}, label %{{[^,]+$}}
48 */
49 return X <= 0 ? -X : X;
50}
51
52__attribute__((noinline)) int bar(int X) {
53 /* PROF-LABEL: define {{.*}} @bar(
54 PROF: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}, !prof ![[PD2:[0-9]+]]
55 */
56 return X <= 0 ? -X : X;
57}
58
59/*
60PROF: ![[ENT]] = !{!"function_entry_count", i64 2}
61PROF: ![[PD1]] = !{!"branch_weights", i32 2, i32 2}
62*/
63