Bug 1739683 - Add gczeal test for Wasm instance call safepoint issue.…

… r=lth

Differential Revision: https://phabricator.services.mozilla.com/D130528

js/src/jit-test/tests/wasm/ref-types/stackmaps5.js

@@ -0,0 +1,21 @@
+// Test for Bug 1739683. Tests that stackmaps are properly associated with
+// an Ion call to a builtin Wasm instance method.
+
+gczeal(2, 1); // Collect on every allocation.
+
+let exports = wasmEvalText(
+  `(module
+     (table $tab (export "tab") 5 externref)
+     (elem declare funcref (ref.func $g))
+     (func $g)
+     (func $f (export "f") (param externref) (result)
+       (ref.func $g) ;; force a collection via allocation in instance call
+       (ref.is_null)
+       (if
+         (then)
+         (else (i32.const 0) (local.get 0) (table.set $tab)))
+       )
+     )`,
+  {}
+).exports;
+exports.f("foo");