[wasm] Store function names in the wasm object

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 ce7ccb7dc0337d656aefa34aa1d312fa1b61188c..1d0fd7110d6eff801a6e3549d3850f8ad998ef4f 100644
--- a/test/cctest/wasm/wasm-run-utils.h
+++ b/test/cctest/wasm/wasm-run-utils.h
@@ -487,13 +487,29 @@ class WasmFunctionCompiler : public HandleAndZoneScope,
                          Code::ComputeFlags(Code::WASM_FUNCTION));
     v8::base::SmartPointer<CompilationJob> job(Pipeline::NewWasmCompilationJob(
         &info, graph(), desc, &source_position_table_));
-    Handle<Code> code = Handle<Code>::null();
-    if (job->OptimizeGraph() == CompilationJob::SUCCEEDED &&
-        job->GenerateCode() == CompilationJob::SUCCEEDED) {
-      code = info.code();
+    if (job->OptimizeGraph() != CompilationJob::SUCCEEDED ||
+        job->GenerateCode() != CompilationJob::SUCCEEDED)
+      return Handle<Code>::null();
+
+    Handle<Code> code = info.code();
+
+    // Length is always 2, since usually <wasm_obj, func_index> is stored in the
+    // deopt data. Here, we store <func_name, undef> instead.
+    DCHECK(code->deoptimization_data() == nullptr ||
+           code->deoptimization_data()->length() == 0);
+    Handle<FixedArray> deopt_data =
+        isolate()->factory()->NewFixedArray(2, TENURED);
+    if (debug_name_.start() != nullptr) {
+      MaybeHandle<String> maybe_name =
+          isolate()->factory()->NewStringFromUtf8(debug_name_, TENURED);
+      if (!maybe_name.is_null())
+        deopt_data->set(0, *maybe_name.ToHandleChecked());
     }
+    deopt_data->set_length(2);
+    code->set_deoptimization_data(*deopt_data);
+
 #ifdef ENABLE_DISASSEMBLER
-    if (!code.is_null() && FLAG_print_opt_code) {
+    if (FLAG_print_opt_code) {
       OFStream os(stdout);
       code->Disassemble("wasm code", os);
     }