1 files changed, 29 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/wasm/tail-calls/litmus7.js b/js/src/jit-test/tests/wasm/tail-calls/litmus7.js
new file mode 100644
index 0000000000..43cfc8d3ed
--- /dev/null
+++ b/js/src/jit-test/tests/wasm/tail-calls/litmus7.js
@@ -0,0 +1,29 @@
+// |jit-test| skip-if: !wasmTailCallsEnabled()
+
+// Tail-call litmus test with multiple results
+//
+// Mutually recursive functions implement a multi-entry loop using indirect tail
+// calls.  The functions do not have the same signatures, so if all arguments
+// are stack arguments then these use different amounts of stack space.
+
+var ins = wasmEvalText(`
+(module
+  (table 2 2 funcref)
+  (elem (i32.const 0) $even $odd)
+  (type $t (func (param i32) (result i32 i32 i32)))
+  (type $q (func (param i32 i32) (result i32 i32 i32)))
+
+  (func $odd (export "odd") (param $n i32) (param $dummy i32) (result i32 i32 i32)
+    (if (result i32 i32 i32) (i32.eqz (local.get $n))
+        (then (return (i32.const 0) (i32.const 32769) (i32.const -37)))
+        (else (return_call_indirect (type $t) (i32.sub (local.get $n) (i32.const 1)) (i32.const 0)))))
+
+  (func $even (export "even") (param $n i32) (result i32 i32 i32)
+    (if (result i32 i32 i32) (i32.eqz (local.get $n))
+        (then (return (i32.const 1) (i32.const -17) (i32.const 44021)))
+        (else (return_call_indirect (type $q) (i32.sub (local.get $n) (i32.const 1)) (i32.const 33) (i32.const 1)))))
+)
+`);
+
+assertSame(ins.exports.even(TailCallIterations), [1, -17, 44021]);
+assertSame(ins.exports.odd(TailCallIterations, 33), [0, 32769, -37]);