dawn-cmake/test/tint/statements/discard/atomic_cmpxchg.wgsl.expecte...

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#include <metal_stdlib>
using namespace metal;
struct atomic_compare_exchange_resulti32 {
int old_value;
bool exchanged;
};
atomic_compare_exchange_resulti32 atomicCompareExchangeWeak_1(device atomic_int* atomic, int compare, int value) {
int old_value = compare;
bool exchanged = atomic_compare_exchange_weak_explicit(atomic, &old_value, value, memory_order_relaxed, memory_order_relaxed);
return {old_value, exchanged};
}
struct tint_private_vars_struct {
bool tint_discarded;
};
struct tint_symbol_2 {
int old_value;
bool exchanged;
};
struct tint_symbol {
int value [[color(0)]];
};
int foo_inner(thread tint_private_vars_struct* const tint_private_vars, device atomic_int* const tint_symbol_4) {
(*(tint_private_vars)).tint_discarded = true;
int x = 0;
tint_symbol_2 tint_symbol_1 = {};
if (!((*(tint_private_vars)).tint_discarded)) {
atomic_compare_exchange_resulti32 const tint_symbol_3 = atomicCompareExchangeWeak_1(tint_symbol_4, 0, 1);
tint_symbol_1.old_value = tint_symbol_3.old_value;
tint_symbol_1.exchanged = tint_symbol_3.exchanged;
}
tint_symbol_2 const result = tint_symbol_1;
if (result.exchanged) {
x = result.old_value;
}
return x;
}
fragment tint_symbol foo(device atomic_int* tint_symbol_5 [[buffer(0)]]) {
thread tint_private_vars_struct tint_private_vars = {};
tint_private_vars.tint_discarded = false;
int const inner_result = foo_inner(&(tint_private_vars), tint_symbol_5);
tint_symbol wrapper_result = {};
wrapper_result.value = inner_result;
if (tint_private_vars.tint_discarded) {
discard_fragment();
}
return wrapper_result;
}