Immediately cache compiled scripts.

Usually, script compilation is expensive enough to warrant the extra
overhead of caching scripts immediatly.

BUG=chromium:588900
R=yangguo@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1890083002

Cr-Commit-Position: refs/heads/master@{#35527}

src/objects.cc

@@ -17636,23 +17636,11 @@ Handle<CompilationCacheTable> CompilationCacheTable::Put(
   Isolate* isolate = cache->GetIsolate();
   Handle<SharedFunctionInfo> shared(context->closure()->shared());
   StringSharedKey key(src, shared, language_mode, RelocInfo::kNoPosition);
-  {
-    Handle<Object> k = key.AsHandle(isolate);
-    DisallowHeapAllocation no_allocation_scope;
-    int entry = cache->FindEntry(&key);
-    if (entry != kNotFound) {
-      cache->set(EntryToIndex(entry), *k);
-      cache->set(EntryToIndex(entry) + 1, *value);
-      return cache;
-    }
-  }
-
+  Handle<Object> k = key.AsHandle(isolate);
   cache = EnsureCapacity(cache, 1, &key);
   int entry = cache->FindInsertionEntry(key.Hash());
-  Handle<Object> k =
-      isolate->factory()->NewNumber(static_cast<double>(key.Hash()));
   cache->set(EntryToIndex(entry), *k);
-  cache->set(EntryToIndex(entry) + 1, Smi::FromInt(kHashGenerations));
+  cache->set(EntryToIndex(entry) + 1, *value);
   cache->ElementAdded();
   return cache;
 }

test/cctest/heap/test-heap.cc

@@ -1587,25 +1587,11 @@ TEST(CompilationCacheCachingBehavior) {
     CompileRun(raw_source);
   }
 
-  // On first compilation, only a hash is inserted in the code cache. We can't
-  // find that value.
+  // The script should be in the cache now.
   MaybeHandle<SharedFunctionInfo> info = compilation_cache->LookupScript(
       source, Handle<Object>(), 0, 0,
       v8::ScriptOriginOptions(false, true, false), native_context,
       language_mode);
-  CHECK(info.is_null());
-
-  {
-    v8::HandleScope scope(CcTest::isolate());
-    CompileRun(raw_source);
-  }
-
-  // On second compilation, the hash is replaced by a real cache entry mapping
-  // the source to the shared function info containing the code.
-  info = compilation_cache->LookupScript(
-      source, Handle<Object>(), 0, 0,
-      v8::ScriptOriginOptions(false, true, false), native_context,
-      language_mode);
   CHECK(!info.is_null());
 
   // Check that the code cache entry survives at least on GC.
@@ -1637,36 +1623,6 @@ TEST(CompilationCacheCachingBehavior) {
       v8::ScriptOriginOptions(false, true, false), native_context,
       language_mode);
   CHECK(info.is_null());
-
-  {
-    v8::HandleScope scope(CcTest::isolate());
-    CompileRun(raw_source);
-  }
-
-  // On first compilation, only a hash is inserted in the code cache. We can't
-  // find that value.
-  info = compilation_cache->LookupScript(
-      source, Handle<Object>(), 0, 0,
-      v8::ScriptOriginOptions(false, true, false), native_context,
-      language_mode);
-  CHECK(info.is_null());
-
-  for (int i = 0; i < CompilationCacheTable::kHashGenerations; i++) {
-    compilation_cache->MarkCompactPrologue();
-  }
-
-  {
-    v8::HandleScope scope(CcTest::isolate());
-    CompileRun(raw_source);
-  }
-
-  // If we aged the cache before caching the script, ensure that we didn't cache
-  // on next compilation.
-  info = compilation_cache->LookupScript(
-      source, Handle<Object>(), 0, 0,
-      v8::ScriptOriginOptions(false, true, false), native_context,
-      language_mode);
-  CHECK(info.is_null());
 }
 
 

test/cctest/test-api.cc

@@ -24064,8 +24064,7 @@ void TestInvalidCacheData(v8::ScriptCompiler::CompileOptions option) {
       script->Run(context).ToLocalChecked()->Int32Value(context).FromJust());
 }
 
-
-TEST(InvalidCacheData) {
+TEST(InvalidParserCacheData) {
   v8::V8::Initialize();
   v8::HandleScope scope(CcTest::isolate());
   LocalContext context;
@@ -24073,6 +24072,12 @@ TEST(InvalidCacheData) {
     // Cached parser data is not consumed while parsing eagerly.
     TestInvalidCacheData(v8::ScriptCompiler::kConsumeParserCache);
   }
+}
+
+TEST(InvalidCodeCacheData) {
+  v8::V8::Initialize();
+  v8::HandleScope scope(CcTest::isolate());
+  LocalContext context;
   TestInvalidCacheData(v8::ScriptCompiler::kConsumeCodeCache);
 }
 

test/mjsunit/osr-elements-kind.js

@@ -30,7 +30,7 @@
 // Limit the number of stress runs to reduce polymorphism it defeats some of the
 // assumptions made about how elements transitions work because transition stubs
 // end up going generic.
-// Flags: --stress-runs=2
+// Flags: --stress-runs=1
 
 var elements_kind = {
   fast_smi_only             :  'fast smi only elements',