Initial support for emitting unwinding information in perf jitdump.

test/cctest/test-code-cache.cc

 // 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.
 
 #include "src/v8.h"
 
 #include "src/list.h"
 #include "src/objects.h"
 #include "test/cctest/cctest.h"
 
 namespace v8 {
 namespace internal {
 
 namespace {
 
 static Handle<Code> GetDummyCode(Isolate* isolate) {
   CodeDesc desc = {nullptr,   // buffer
                    0,         // buffer_size
                    0,         // instr_size
                    0,         // reloc_size
                    0,         // constant_pool_size
+                   nullptr,   // unwinding_info
+                   0,         // unwinding_info_size
                    nullptr};  // origin
   Code::Flags flags =
       Code::ComputeFlags(Code::LOAD_IC, kNoExtraICState, kCacheOnReceiver);
   Handle<Code> self_ref;
   return isolate->factory()->NewCode(desc, flags, self_ref);
 }
 
 }  // namespace
 
 TEST(CodeCache) {
@@ skipping 34 matching lines @@
   // Check that lookup works not only right after storing.
   for (int i = 0; i < kEntries; i++) {
     Handle<Name> name = names.at(i);
     Handle<Code> code = codes.at(i);
     CHECK_EQ(*code, map->LookupInCodeCache(*name, code->flags()));
   }
 }
 
 }  // namespace internal
 }  // namespace v8