Minor compiler pipeline refactoring. Inline UpdateSharedFunctionInfo and make Parser::Parse respons…

src/compiler.cc

Index: src/compiler.cc
diff --git a/src/compiler.cc b/src/compiler.cc
index acfeaa48ccb303b3722600ed435a8233abcff79e..cd8b75b42a5dc912d7a48e3c6f34b3e36bee2fe6 100644
--- a/src/compiler.cc
+++ b/src/compiler.cc
@@ -619,37 +619,6 @@ void SetExpectedNofPropertiesFromEstimate(Handle<SharedFunctionInfo> shared,
 }
 
 
-static void UpdateSharedFunctionInfo(CompilationInfo* info) {
-  // Update the shared function info with the compiled code and the
-  // scope info.  Please note, that the order of the shared function
-  // info initialization is important since set_scope_info might
-  // trigger a GC, causing the DCHECK below to be invalid if the code
-  // was flushed. By setting the code object last we avoid this.
-  Handle<SharedFunctionInfo> shared = info->shared_info();
-  Handle<ScopeInfo> scope_info =
-      ScopeInfo::Create(info->scope(), info->zone());
-  shared->set_scope_info(*scope_info);
-
-  Handle<Code> code = info->code();
-  CHECK(code->kind() == Code::FUNCTION);
-  shared->ReplaceCode(*code);
-  if (shared->optimization_disabled()) code->set_optimizable(false);
-
-  shared->set_feedback_vector(*info->feedback_vector());
-
-  // Set the expected number of properties for instances.
-  FunctionLiteral* lit = info->function();
-  int expected = lit->expected_property_count();
-  SetExpectedNofPropertiesFromEstimate(shared, expected);
-
-  // Check the function has compiled code.
-  DCHECK(shared->is_compiled());
-  shared->set_bailout_reason(lit->dont_optimize_reason());
-  shared->set_ast_node_count(lit->ast_node_count());
-  shared->set_strict_mode(lit->strict_mode());
-}
-
-
 // Sets the function info on a function.
 // The start_position points to the first '(' character after the function name
 // in the full script source. When counting characters in the script source the
@@ -702,14 +671,33 @@ MUST_USE_RESULT static MaybeHandle<Code> GetUnoptimizedCodeCommon(
     CompilationInfo* info) {
   VMState<COMPILER> state(info->isolate());
   PostponeInterruptsScope postpone(info->isolate());
+
+  // Parse and update CompilationInfo with the results.
   if (!Parser::Parse(info)) return MaybeHandle<Code>();
-  info->SetStrictMode(info->function()->strict_mode());
+  Handle<SharedFunctionInfo> shared = info->shared_info();
+  FunctionLiteral* lit = info->function();
+  shared->set_strict_mode(lit->strict_mode());
+  SetExpectedNofPropertiesFromEstimate(shared, lit->expected_property_count());
+  shared->set_bailout_reason(lit->dont_optimize_reason());
+  shared->set_ast_node_count(lit->ast_node_count());
 
+  // Compile unoptimized code.
   if (!CompileUnoptimizedCode(info)) return MaybeHandle<Code>();
+
+  CHECK_EQ(Code::FUNCTION, info->code()->kind());
   Compiler::RecordFunctionCompilation(
       Logger::LAZY_COMPILE_TAG, info, info->shared_info());
-  UpdateSharedFunctionInfo(info);
-  DCHECK_EQ(Code::FUNCTION, info->code()->kind());
+
+  // Update the shared function info with the scope info. Allocating the
+  // ScopeInfo object may cause a GC.
+  Handle<ScopeInfo> scope_info = ScopeInfo::Create(info->scope(), info->zone());
+  shared->set_scope_info(*scope_info);
+
+  // Update the code and feedback vector for the shared function info.
+  shared->ReplaceCode(*info->code());
+  if (shared->optimization_disabled()) info->code()->set_optimizable(false);
+  shared->set_feedback_vector(*info->feedback_vector());
+
   return info->code();
 }
 
@@ -817,7 +805,6 @@ void Compiler::CompileForLiveEdit(Handle<Script> script) {
 
   info.MarkAsGlobal();
   if (!Parser::Parse(&info)) return;
-  info.SetStrictMode(info.function()->strict_mode());
 
   LiveEditFunctionTracker tracker(info.isolate(), info.function());
   if (!CompileUnoptimizedCode(&info)) return;
@@ -1192,8 +1179,6 @@ static void InsertCodeIntoOptimizedCodeMap(CompilationInfo* info) {
 
 static bool CompileOptimizedPrologue(CompilationInfo* info) {
   if (!Parser::Parse(info)) return false;
-  info->SetStrictMode(info->function()->strict_mode());
-
   if (!Rewriter::Rewrite(info)) return false;
   if (!Scope::Analyze(info)) return false;
   DCHECK(info->scope() != NULL);