1 files changed, 41 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/wasm/multi-value/regress-1597200.js b/js/src/jit-test/tests/wasm/multi-value/regress-1597200.js
new file mode 100644
index 0000000000..542bd542ab
--- /dev/null
+++ b/js/src/jit-test/tests/wasm/multi-value/regress-1597200.js
@@ -0,0 +1,41 @@
+new WebAssembly.Instance(new WebAssembly.Module(wasmTextToBinary(`
+(module
+  (func (export "main") (result i32)
+    (i32.const 1)
+    (i32.const 2)
+    (i32.const 3)
+    (loop (param i32 i32 i32)
+      (i32.popcnt)
+      (i32.const -63)
+      (br 0))
+    (unreachable)))`)));
+
+wasmFullPass(`
+(module
+  (func (export "run") (result i32)
+    (block (result i32 i32 i32)
+      (i32.const 41)
+      (i32.const 42)
+      (i32.const 43)
+      (loop (param i32 i32 i32)
+        (i32.eqz)
+        (i32.const -63)
+        (br 1))
+      (unreachable))
+    (drop)
+    (drop)))`,
+            42);
+
+wasmFullPass(`
+(module
+  (func (export "run") (result i32)
+    (block (result i32 i32 i32)
+      (i32.popcnt (i32.const 0x0))
+      (i32.popcnt (i32.const 0xf))
+      (i32.popcnt (i32.const 0xff))
+      (i32.popcnt (i32.const 0xfff))
+      (block) ;; Force a sync().
+      (br 0))
+    (drop)
+    (drop)))`,
+             4);