21 lines
397 B
C++
21 lines
397 B
C++
|
// Synthetic benchmark for __tsan_func_entry/exit (spends ~75% there).
|
||
|
|
||
|
void foo(bool x);
|
||
|
|
||
|
int main() {
|
||
|
volatile int kRepeat1 = 1 << 30;
|
||
|
const int kRepeat = kRepeat1;
|
||
|
for (int i = 0; i < kRepeat; i++)
|
||
|
foo(false);
|
||
|
}
|
||
|
|
||
|
__attribute__((noinline)) void bar(volatile bool x) {
|
||
|
if (x)
|
||
|
foo(x);
|
||
|
}
|
||
|
|
||
|
__attribute__((noinline)) void foo(bool x) {
|
||
|
if (__builtin_expect(x, false))
|
||
|
bar(x);
|
||
|
}
|