[Wasm-GC] Update "read the imports" part of JS API for globals

https://bugs.webkit.org/show_bug.cgi?id=264655

Reviewed by Justin Michaud.

The GC proposal JS API was recently updated
(WebAssembly/gc#467) to allow direct import of reftype
globals in more cases.

This patch also includes a version of the pending WPT tests for this case
(tracked upstream here: WebAssembly/gc#498) which
should be updated later if there are any changes in the accepted upstream
version.

* JSTests/wasm/gc/js-api.js:
(testImport.):
(testImport):
* LayoutTests/imported/w3c/web-platform-tests/wasm/jsapi/gc/global-import.tentative.any.js: Added.
(setup.doLink):
(setup):
(test):
* Source/JavaScriptCore/wasm/js/JSWebAssemblyHelpers.h:
(JSC::fromJSValue):
* Source/JavaScriptCore/wasm/js/WebAssemblyModuleRecord.cpp:
(JSC::WebAssemblyModuleRecord::initializeImports):

Canonical link: https://commits.webkit.org/272367@main

JSTests/wasm/gc/js-api.js

@@ -595,6 +595,45 @@ function testImport() {
       "Argument value did not match reference type"
     );
   }
+
+  // Test direct global imports.
+  {
+    function doImport(type, val) {
+      instantiate(`
+        (module
+          (type (struct))
+          (type (array i32))
+          (global (import "m" "g") (ref ${type}))
+        )
+      `,
+      { m: { g: val } });
+    }
+    function castError(type, val) {
+      assert.throws(
+        () => { doImport(type, val); },
+        WebAssembly.LinkError,
+        "Argument value did not match the reference type"
+      );
+    }
+    let m = instantiate(`
+      (module
+        (type (struct))
+        (type (array i32))
+        (func (export "makeS") (result anyref) (struct.new 0))
+        (func (export "makeA") (result anyref) (array.new_default 1 (i32.const 10)))
+      )
+    `);
+    doImport("any", "foo");
+    doImport("i31", 2 ** 30 - 1);
+    doImport("i31", -(2 ** 30));
+    castError("i31", 2.3);
+    doImport("any", "foo");
+    doImport("struct", m.exports.makeS());
+    doImport("array", m.exports.makeA());
+    doImport("0", m.exports.makeS());
+    doImport("1", m.exports.makeA());
+    castError("0", m.exports.makeA());
+  }
 }
 
 testArray();

LayoutTests/imported/w3c/web-platform-tests/wasm/jsapi/gc/global-import.tentative.any-expected.txt

@@ -0,0 +1,13 @@
+
+PASS anyref import
+PASS eqref import
+PASS structref import
+PASS arrayref import
+PASS i31ref import
+PASS funcref import
+PASS externref import
+PASS null import
+PASS concrete struct import
+PASS concrete array import
+PASS concrete func import
+

LayoutTests/imported/w3c/web-platform-tests/wasm/jsapi/gc/global-import.tentative.any.html

@@ -0,0 +1,2 @@
+<!-- webkit-test-runner [ jscOptions=--useWebAssemblyTypedFunctionReferences=true,--useWebAssemblyGC=true ] -->
+<!-- This file is required for WebKit test infrastructure to run the templated test -->