1 files changed, 95 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/wasm/spec/memory64/memory_redundancy64.wast.js b/js/src/jit-test/tests/wasm/spec/memory64/memory_redundancy64.wast.js
new file mode 100644
index 0000000000..5801c3057e
--- /dev/null
+++ b/js/src/jit-test/tests/wasm/spec/memory64/memory_redundancy64.wast.js
@@ -0,0 +1,95 @@
+/* Copyright 2021 Mozilla Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// ./test/core/memory_redundancy64.wast
+
+// ./test/core/memory_redundancy64.wast:5
+let $0 = instantiate(`(module
+  (memory i64 1 1)
+
+  (func (export "zero_everything")
+    (i32.store (i64.const 0) (i32.const 0))
+    (i32.store (i64.const 4) (i32.const 0))
+    (i32.store (i64.const 8) (i32.const 0))
+    (i32.store (i64.const 12) (i32.const 0))
+  )
+
+  (func (export "test_store_to_load") (result i32)
+    (i32.store (i64.const 8) (i32.const 0))
+    (f32.store (i64.const 5) (f32.const -0.0))
+    (i32.load (i64.const 8))
+  )
+
+  (func (export "test_redundant_load") (result i32)
+    (local $$t i32)
+    (local $$s i32)
+    (local.set $$t (i32.load (i64.const 8)))
+    (i32.store (i64.const 5) (i32.const 0x80000000))
+    (local.set $$s (i32.load (i64.const 8)))
+    (i32.add (local.get $$t) (local.get $$s))
+  )
+
+  (func (export "test_dead_store") (result f32)
+    (local $$t f32)
+    (i32.store (i64.const 8) (i32.const 0x23232323))
+    (local.set $$t (f32.load (i64.const 11)))
+    (i32.store (i64.const 8) (i32.const 0))
+    (local.get $$t)
+  )
+
+  ;; A function named "malloc" which implementations nonetheless shouldn't
+  ;; assume behaves like C malloc.
+  (func $$malloc (export "malloc")
+     (param $$size i64)
+     (result i64)
+     (i64.const 16)
+  )
+
+  ;; Call malloc twice, but unlike C malloc, we don't get non-aliasing pointers.
+  (func (export "malloc_aliasing")
+     (result i32)
+     (local $$x i64)
+     (local $$y i64)
+     (local.set $$x (call $$malloc (i64.const 4)))
+     (local.set $$y (call $$malloc (i64.const 4)))
+     (i32.store (local.get $$x) (i32.const 42))
+     (i32.store (local.get $$y) (i32.const 43))
+     (i32.load (local.get $$x))
+  )
+)`);
+
+// ./test/core/memory_redundancy64.wast:59
+assert_return(() => invoke($0, `test_store_to_load`, []), [value("i32", 128)]);
+
+// ./test/core/memory_redundancy64.wast:60
+invoke($0, `zero_everything`, []);
+
+// ./test/core/memory_redundancy64.wast:61
+assert_return(() => invoke($0, `test_redundant_load`, []), [value("i32", 128)]);
+
+// ./test/core/memory_redundancy64.wast:62
+invoke($0, `zero_everything`, []);
+
+// ./test/core/memory_redundancy64.wast:63
+assert_return(
+  () => invoke($0, `test_dead_store`, []),
+  [value("f32", 0.000000000000000000000000000000000000000000049)],
+);
+
+// ./test/core/memory_redundancy64.wast:64
+invoke($0, `zero_everything`, []);
+
+// ./test/core/memory_redundancy64.wast:65
+assert_return(() => invoke($0, `malloc_aliasing`, []), [value("i32", 43)]);