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[ESIMD] Fix potential infinite loop in dword_atomic_cmpxchg.cpp. #1304

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Oct 4, 2022
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[ESIMD] Fix potential infinite loop in dword_atomic_cmpxchg.cpp. #1304

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4 changes: 3 additions & 1 deletion SYCL/ESIMD/lsc/atomic_smoke.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -65,10 +65,12 @@ constexpr char MODE[] = "LSC";
#endif // USE_DWORD_ATOMICS

#ifndef USE_DWORD_ATOMICS
#if USE_FULL_BARRIER
uint32_t atomic_load(uint32_t *addr) {
auto v = atomic_update<LSCAtomicOp::load, uint32_t, 1>(addr, 0, 1);
return v[0];
}
#endif // USE_FULL_BARRIER
#endif // USE_DWORD_ATOMICS

template <class, int, template <class, int> class> class TestID;
Expand Down Expand Up @@ -240,7 +242,7 @@ bool test(queue q, const Config &cfg) {
// is not endless:
for (auto old_val =
atomic_update<op>(arr, offsets, new_val, exp_val, m);
any(old_val != exp_val, !m);
any(old_val < exp_val, !m);
old_val =
atomic_update<op>(arr, offsets, new_val, exp_val, m))
;
Expand Down