1 files changed, 49 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/wasm/globals-impl.js b/js/src/jit-test/tests/wasm/globals-impl.js
new file mode 100644
index 0000000000..f5ff8a3f5d
--- /dev/null
+++ b/js/src/jit-test/tests/wasm/globals-impl.js
@@ -0,0 +1,49 @@
+// This is intended to test that Ion correctly handles the combination
+// {direct, indirect} x {i32, i64} for global variables, following GVN
+// improvements pertaining to globals in bug 1448277.
+
+let txt =
+  `(module
+     ;; -------- Globals --------
+     (global $ind64 (export "ind64") (mut i64) (i64.const 4242))
+     (global $ind32 (export "ind32") (mut i32) (i32.const 3141))
+     (global $dir64 (mut i64) (i64.const 5927))
+     (global $dir32 (mut i32) (i32.const 2718))
+     ;; -------- FUNCTION 0 --------
+     (func (export "function0") (result i32)
+       (local $loopctr i32)
+       (local $sum     i32)
+       (local $tmp64   i64)
+       (local $tmp32   i32)
+       (loop
+          (global.set $ind64 (i64.add (global.get $ind64) (i64.const 11)))
+          (global.set $ind32 (i32.add (global.get $ind32) (i32.const 22)))
+          (global.set $dir64 (i64.add (global.get $dir64) (i64.const 33)))
+          (global.set $dir32 (i32.add (global.get $dir32) (i32.const 44)))
+
+          (local.set $tmp64 (i64.and (global.get $ind64) (global.get $dir64)))
+          (local.set $tmp32 (i32.or  (global.get $ind32) (global.get $dir32)))
+
+          (local.set $sum
+            (i32.sub (local.get $sum) (i32.xor (i32.wrap/i64 (local.get $tmp64))
+                                               (local.get $tmp32))))
+
+          (local.set $loopctr
+            (i32.add (local.get $loopctr) (i32.const 1)))
+          (br_if 0
+            (i32.lt_u (local.get $loopctr) (i32.const 10)))
+
+       )
+       (local.get $sum)
+     )
+   )`;
+
+function test_driver()
+{
+    let bin  = wasmTextToBinary(txt);
+    let inst = new WebAssembly.Instance(new WebAssembly.Module(bin));
+    let res  = inst.exports.function0();
+    assertEq(res, -79170);
+}
+
+test_driver();