[wasm] Base address for data segments can also be the value of a global variable.

test/mjsunit/wasm/test-wasm-module-builder.js

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Flags: --expose-wasm
 
 load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 var debug = true;
@@ skipping 87 matching lines @@
     assertEquals(7777, instance.exports.main(0, 2222, 5555));
     assertThrows(function() { instance.exports.main(1, 1, 1); });
 })();
 
 (function DataSegmentTest() {
     var module = new WasmModuleBuilder();
     module.addMemory(1, 1, false);
     module.addFunction("load", kSig_i_i)
         .addBody([kExprGetLocal, 0, kExprI32LoadMem, 0, 0])
         .exportAs("load");
-    module.addDataSegment(0, [9, 9, 9, 9], true);
+    module.addDataSegment(0, [9, 9, 9, 9]);
 
     var buffer = module.toBuffer(debug);
     var instance = Wasm.instantiateModule(buffer);
     assertEquals(151587081, instance.exports.load(0));
 })();
 
 
 (function BasicTestWithUint8Array() {
     var module = new WasmModuleBuilder();
     module.addMemory(1, 2, false);
@@ skipping 25 matching lines @@
     var index = module.addImportWithModule("mod", "print", makeSig_v_x(kAstI32));
     module.addFunction("foo", kSig_v_v)
         .addBody([kExprI8Const, 19, kExprCallFunction, index])
         .exportAs("main");
 
     var buffer = module.toBuffer(debug);
     var instance = Wasm.instantiateModule(buffer, {mod: {print: print}});
     print("should print 19! ");
     instance.exports.main();
 })();