1 files changed, 92 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/bug1791520.js b/js/src/jit-test/tests/ion/bug1791520.js
new file mode 100644
index 0000000000..aca91c2a7f
--- /dev/null
+++ b/js/src/jit-test/tests/ion/bug1791520.js
@@ -0,0 +1,92 @@
+function testAtomicsAdd() {
+  var x;
+  for (var i = 0; i < 100; ++i) {
+    var a = new BigInt64Array(2);
+    x = Atomics.add(a, i & 1, 1n);
+  }
+  return x;
+}
+
+function testAtomicsSub() {
+  var x;
+  for (var i = 0; i < 100; ++i) {
+    var a = new BigInt64Array(2);
+    x = Atomics.sub(a, i & 1, 1n);
+  }
+  return x;
+}
+
+function testAtomicsAnd() {
+  var x;
+  for (var i = 0; i < 100; ++i) {
+    var a = new BigInt64Array(2);
+    x = Atomics.and(a, i & 1, 1n);
+  }
+  return x;
+}
+
+function testAtomicsOr() {
+  var x;
+  for (var i = 0; i < 100; ++i) {
+    var a = new BigInt64Array(2);
+    x = Atomics.or(a, i & 1, 1n);
+  }
+  return x;
+}
+
+function testAtomicsXor() {
+  var x;
+  for (var i = 0; i < 100; ++i) {
+    var a = new BigInt64Array(2);
+    x = Atomics.xor(a, i & 1, 1n);
+  }
+  return x;
+}
+
+function testAtomicsExchange() {
+  var x;
+  for (var i = 0; i < 100; ++i) {
+    var a = new BigInt64Array(2);
+    x = Atomics.exchange(a, i & 1, 0n);
+  }
+  return x;
+}
+
+function testAtomicsCompareExchange() {
+  var x;
+  for (var i = 0; i < 100; ++i) {
+    var a = new BigInt64Array(2);
+    x = Atomics.compareExchange(a, i & 1, 0n, 0n);
+  }
+  return x;
+}
+
+function testAtomicsLoad() {
+  var x;
+  for (var i = 0; i < 100; ++i) {
+    var a = new BigInt64Array(2);
+    x = Atomics.load(a, i & 1);
+  }
+  return x;
+}
+
+function testLoadElement() {
+  var x;
+  for (var i = 0; i < 100; ++i) {
+    var a = new BigInt64Array(2);
+    x = a[i & 1];
+  }
+  return x;
+}
+
+gczeal(14);
+
+testAtomicsAdd();
+testAtomicsSub();
+testAtomicsAnd();
+testAtomicsOr();
+testAtomicsXor();
+testAtomicsExchange();
+testAtomicsCompareExchange();
+testAtomicsLoad();
+testLoadElement();