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// |jit-test| test-join=--spectre-mitigations=off
// These do not test atomicity, just that code generation for BigInt values
// works correctly.
const bigIntValues = [
// Definitely heap digits.
-(2n ** 2000n),
-(2n ** 1000n),
// -(2n**64n)
-18446744073709551617n,
-18446744073709551616n,
-18446744073709551615n,
// -(2n**63n)
-9223372036854775809n,
-9223372036854775808n,
-9223372036854775807n,
// -(2**32)
-4294967297n,
-4294967296n,
-4294967295n,
// -(2**31)
-2147483649n,
-2147483648n,
-2147483647n,
-1n,
0n,
1n,
// 2**31
2147483647n,
2147483648n,
2147483649n,
// 2**32
4294967295n,
4294967296n,
4294967297n,
// 2n**63n
9223372036854775807n,
9223372036854775808n,
9223372036854775809n,
// 2n**64n
18446744073709551615n,
18446744073709551616n,
18446744073709551617n,
// Definitely heap digits.
2n ** 1000n,
2n ** 2000n,
];
function testCompareExchange() {
const int64 = new BigInt64Array(2);
const uint64 = new BigUint64Array(2);
// Test with constant index.
for (let i = 0; i < 20; ++i) {
for (let j = 0; j < bigIntValues.length; ++j) {
let value = bigIntValues[j];
// Comparison fails.
assertEq(Atomics.compareExchange(int64, 0, 1n, value), 0n);
assertEq(int64[0], 0n);
assertEq(Atomics.compareExchange(uint64, 0, 1n, value), 0n);
assertEq(uint64[0], 0n);
// Comparison succeeds, the new value is written into the memory location.
assertEq(Atomics.compareExchange(int64, 0, 0n, value), 0n);
assertEq(int64[0], BigInt.asIntN(64, value));
assertEq(Atomics.compareExchange(uint64, 0, 0n, value), 0n);
assertEq(uint64[0], BigInt.asUintN(64, value));
// Comparison succeeds, the memory location is reset.
assertEq(Atomics.compareExchange(int64, 0, value, 0n), BigInt.asIntN(64, value));
assertEq(int64[0], 0n);
assertEq(Atomics.compareExchange(uint64, 0, value, 0n), BigInt.asUintN(64, value));
assertEq(uint64[0], 0n);
}
}
// Test with variable index.
for (let i = 0; i < 20; ++i) {
for (let j = 0; j < bigIntValues.length; ++j) {
let value = bigIntValues[j];
let idx = j & 1;
// Comparison fails.
assertEq(Atomics.compareExchange(int64, idx, 1n, value), 0n);
assertEq(int64[idx], 0n);
assertEq(Atomics.compareExchange(uint64,idx, 1n, value), 0n);
assertEq(uint64[idx], 0n);
// Comparison succeeds, the new value is written into the memory location.
assertEq(Atomics.compareExchange(int64, idx, 0n, value), 0n);
assertEq(int64[idx], BigInt.asIntN(64, value));
assertEq(Atomics.compareExchange(uint64, idx, 0n, value), 0n);
assertEq(uint64[idx], BigInt.asUintN(64, value));
// Comparison succeeds, the memory location is reset.
assertEq(Atomics.compareExchange(int64, idx, value, 0n), BigInt.asIntN(64, value));
assertEq(int64[idx], 0n);
assertEq(Atomics.compareExchange(uint64, idx, value, 0n), BigInt.asUintN(64, value));
assertEq(uint64[idx], 0n);
}
}
}
for (let i = 0; i < 2; ++i) testCompareExchange();
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