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9569e2c790
By generating a helper function for these, we can keep the atomic expression pre-statement-free. This can help prevent for-loops from being transformed into while loops. Change-Id: Id034ea5ea9be601661ddb78db973015d845c420f Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/57463 Kokoro: Kokoro <noreply+kokoro@google.com> Commit-Queue: Ben Clayton <bclayton@google.com> Auto-Submit: Ben Clayton <bclayton@google.com> Reviewed-by: James Price <jrprice@google.com>
26 lines
876 B
Plaintext
26 lines
876 B
Plaintext
#include <metal_stdlib>
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using namespace metal;
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template <typename A, typename T>
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vec<T, 2> atomicCompareExchangeWeak_1(threadgroup A* atomic, T compare, T value) {
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T prev_value = compare;
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bool matched = atomic_compare_exchange_weak_explicit(atomic, &prev_value, value, memory_order_relaxed, memory_order_relaxed);
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return {prev_value, matched};
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}
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void atomicCompareExchangeWeak_89ea3b(threadgroup atomic_int* const tint_symbol_1) {
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int2 res = atomicCompareExchangeWeak_1(&(*(tint_symbol_1)), 1, 1);
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}
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kernel void compute_main(uint local_invocation_index [[thread_index_in_threadgroup]]) {
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threadgroup atomic_int tint_symbol_2;
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if ((local_invocation_index == 0u)) {
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atomic_store_explicit(&(tint_symbol_2), int(), memory_order_relaxed);
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}
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threadgroup_barrier(mem_flags::mem_threadgroup);
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atomicCompareExchangeWeak_89ea3b(&(tint_symbol_2));
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return;
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}
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