FunctionLiteral has work to do in the typing phase.

src/hydrogen.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 4558 matching lines @@
   ASSERT(current_block()->HasPredecessor());
   return Bailout(kDebuggerStatement);
 }
 
 
 void HOptimizedGraphBuilder::VisitCaseClause(CaseClause* clause) {
   UNREACHABLE();
 }
 
 
-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());
   }
   // We also have a stack overflow if the recursive compilation did.
   if (HasStackOverflow()) return;
   HFunctionLiteral* instr =
       New<HFunctionLiteral>(shared_info, expr->pretenure());
   return ast_context()->ReturnInstruction(instr, expr->id());
 }
 
@@ skipping 6199 matching lines @@
   if (ShouldProduceTraceOutput()) {
     isolate()->GetHTracer()->TraceHydrogen(name(), graph_);
   }
 
 #ifdef DEBUG
   graph_->Verify(false);  // No full verify.
 #endif
 }
 
 } }  // namespace v8::internal