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Add xadd to chibicc

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This commit is contained in:
Justine Tunney 2022-06-21 04:55:27 -07:00
parent 56eff8544f
commit 1216b6e7c7
2 changed files with 23 additions and 0 deletions
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13
third_party/chibicc/test/atomic_test.c vendored
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@ -37,5 +37,18 @@ main() {
ASSERT(4, x);
ASSERT(4, lock);
// CAS success #3
x = 4;
ASSERT(1, __atomic_compare_exchange_n(&lock, &x, 31337, 0, __ATOMIC_SEQ_CST,
__ATOMIC_SEQ_CST));
ASSERT(4, x);
ASSERT(31337, lock);
// xadd
ASSERT(31337, __atomic_fetch_add(&lock, 31337, __ATOMIC_SEQ_CST));
ASSERT(62674, lock);
ASSERT(62674, __atomic_fetch_sub(&lock, 31337, __ATOMIC_SEQ_CST));
ASSERT(31337, lock);
//
}