[wasm] Make wasm info available on the stack trace

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

 // 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.
 
 #ifndef WASM_RUN_UTILS_H
 #define WASM_RUN_UTILS_H
 
 #include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
@@ skipping 477 matching lines @@
                          Code::ComputeFlags(Code::WASM_FUNCTION));
     v8::base::SmartPointer<CompilationJob> job(Pipeline::NewWasmCompilationJob(
         &info, graph(), desc, &source_position_table_));
     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.
+    // deopt data. Here, we only store the function index.
     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(1, Smi::FromInt(function_index_));
     deopt_data->set_length(2);
     code->set_deoptimization_data(*deopt_data);
 
 #ifdef ENABLE_DISASSEMBLER
     if (FLAG_print_opt_code) {
       OFStream os(stdout);
       code->Disassemble("wasm code", os);
     }
 #endif
 
@@ skipping 140 matching lines @@
     if (p1 == MachineType::None()) return 1;
     if (p2 == MachineType::None()) return 2;
     if (p3 == MachineType::None()) return 3;
     return 4;
   }
 };
 
 }  // namespace
 
 #endif