From: mvstanton@chromium.org <mvstanton@chromium.org@ce2b1a6d-e550-0410-aec6-3dcde31c8c00>
Date: Thu, 9 Jan 2014 09:00:19 +0000 (+0000)
Subject: FunctionLiteral has work to do in the typing phase.
X-Git-Tag: upstream/4.7.83~11224
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=7baadbfac160fdf146e8782a84767689b83b0e03;p=platform%2Fupstream%2Fv8.git

FunctionLiteral has work to do in the typing phase.

In crankshaft, we searched un-optimized code for a SharedFunctionInfo
that matches the FunctionLiteral we are processing. Ideally, this
work should be done in the typing phase.

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/104883006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18508 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
---

diff --git a/src/ast.cc b/src/ast.cc
index ecf83ea..21ea50b 100644
--- a/src/ast.cc
+++ b/src/ast.cc
@@ -186,6 +186,23 @@ LanguageMode FunctionLiteral::language_mode() const {
 }
 
 
+void FunctionLiteral::InitializeSharedInfo(
+    Handle<Code> unoptimized_code) {
+  for (RelocIterator it(*unoptimized_code); !it.done(); it.next()) {
+    RelocInfo* rinfo = it.rinfo();
+    if (rinfo->rmode() != RelocInfo::EMBEDDED_OBJECT) continue;
+    Object* obj = rinfo->target_object();
+    if (obj->IsSharedFunctionInfo()) {
+      SharedFunctionInfo* shared = SharedFunctionInfo::cast(obj);
+      if (shared->start_position() == start_position()) {
+        shared_info_ = Handle<SharedFunctionInfo>(shared);
+        break;
+      }
+    }
+  }
+}
+
+
 ObjectLiteralProperty::ObjectLiteralProperty(Literal* key,
                                              Expression* value,
                                              Isolate* isolate) {
diff --git a/src/ast.h b/src/ast.h
index 3fabfdd..64a56e9 100644
--- a/src/ast.h
+++ b/src/ast.h
@@ -2296,6 +2296,8 @@ class FunctionLiteral V8_FINAL : public Expression {
   bool AllowsLazyCompilation();
   bool AllowsLazyCompilationWithoutContext();
 
+  void InitializeSharedInfo(Handle<Code> code);
+
   Handle<String> debug_name() const {
     if (name_->length() > 0) return name_;
     return inferred_name();
@@ -2306,6 +2308,9 @@ class FunctionLiteral V8_FINAL : public Expression {
     inferred_name_ = inferred_name;
   }
 
+  // shared_info may be null if it's not cached in full code.
+  Handle<SharedFunctionInfo> shared_info() { return shared_info_; }
+
   bool pretenure() { return Pretenure::decode(bitfield_); }
   void set_pretenure() { bitfield_ |= Pretenure::encode(true); }
 
@@ -2381,6 +2386,7 @@ class FunctionLiteral V8_FINAL : public Expression {
 
  private:
   Handle<String> name_;
+  Handle<SharedFunctionInfo> shared_info_;
   Scope* scope_;
   ZoneList<Statement*>* body_;
   Handle<String> inferred_name_;
diff --git a/src/hydrogen.cc b/src/hydrogen.cc
index 529ebd2..3c4ff15 100644
--- a/src/hydrogen.cc
+++ b/src/hydrogen.cc
@@ -4572,31 +4572,11 @@ void HOptimizedGraphBuilder::VisitCaseClause(CaseClause* clause) {
 }
 
 
-static Handle<SharedFunctionInfo> SearchSharedFunctionInfo(
-    Code* unoptimized_code, FunctionLiteral* expr) {
-  int start_position = expr->start_position();
-  for (RelocIterator it(unoptimized_code); !it.done(); it.next()) {
-    RelocInfo* rinfo = it.rinfo();
-    if (rinfo->rmode() != RelocInfo::EMBEDDED_OBJECT) continue;
-    Object* obj = rinfo->target_object();
-    if (obj->IsSharedFunctionInfo()) {
-      SharedFunctionInfo* shared = SharedFunctionInfo::cast(obj);
-      if (shared->start_position() == start_position) {
-        return Handle<SharedFunctionInfo>(shared);
-      }
-    }
-  }
-
-  return Handle<SharedFunctionInfo>();
-}
-
-
 void HOptimizedGraphBuilder::VisitFunctionLiteral(FunctionLiteral* expr) {
   ASSERT(!HasStackOverflow());
   ASSERT(current_block() != NULL);
   ASSERT(current_block()->HasPredecessor());
-  Handle<SharedFunctionInfo> shared_info =
-      SearchSharedFunctionInfo(current_info()->shared_info()->code(), expr);
+  Handle<SharedFunctionInfo> shared_info = expr->shared_info();
   if (shared_info.is_null()) {
     shared_info = Compiler::BuildFunctionInfo(expr, current_info()->script());
   }
diff --git a/src/typing.cc b/src/typing.cc
index c692f48..152f3c7 100644
--- a/src/typing.cc
+++ b/src/typing.cc
@@ -368,6 +368,7 @@ void AstTyper::VisitDebuggerStatement(DebuggerStatement* stmt) {
 
 
 void AstTyper::VisitFunctionLiteral(FunctionLiteral* expr) {
+  expr->InitializeSharedInfo(Handle<Code>(info_->closure()->shared()->code()));
 }