[wasm] Add utilities to print out WASM ast directly from the bytes.

test/cctest/wasm/wasm-run-utils.h

Index: test/cctest/wasm/wasm-run-utils.h
diff --git a/test/cctest/wasm/wasm-run-utils.h b/test/cctest/wasm/wasm-run-utils.h
index cc23b46b732365446c8bdb75e4de80ba372104a0..bb9cdab4c51029a4bd8b932630dd70e8308f4da0 100644
--- a/test/cctest/wasm/wasm-run-utils.h
+++ b/test/cctest/wasm/wasm-run-utils.h
@@ -168,6 +168,29 @@ class TestingModule : public ModuleEnv {
     return &module->functions->back();
   }
 
+  void AddIndirectFunctionTable(int* functions, int table_size) {

[ahaas, 2016/01/21 15:47:28]

This function is only used with the parameters "null_ptr, 0". Do you plan to use
it for more tests? If not, then imo the code should not be more complex than
necessary.

+    AllocModule();
+    Isolate* isolate = module->shared_isolate;
+    Handle<FixedArray> fixed =
+        isolate->factory()->NewFixedArray(2 * table_size);
+    function_table = fixed;
+    module->function_table = new std::vector<uint16_t>();
+    for (int i = 0; i < table_size; i++) {
+      module->function_table->push_back(functions[i]);
+    }
+  }
+
+  void PopulateIndirectFunctionTable() {

[ahaas, 2016/01/21 15:47:28]

This function is not used anywhere. Does it have to be in this CL?

+    if (function_table.is_null()) return;
+    int table_size = static_cast<int>(module->function_table->size());
+    for (int i = 0; i < table_size; i++) {
+      int function = module->function_table->at(i);
+      function_table->set(i, Smi::FromInt(function));
+      function_table->set(i + table_size, *function_code->at(function));
+    }
+  }
+
+
  private:
   size_t mem_size;
   uint32_t global_offset;