Keep a canonical list of shared function infos.

src/compiler.h

 // Copyright 2012 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.
 
 #ifndef V8_COMPILER_H_
 #define V8_COMPILER_H_
 
 #include "src/allocation.h"
 #include "src/ast.h"
 #include "src/bailout-reason.h"
@@ skipping 620 matching lines @@
       Handle<Object> source_map_url, Handle<Context> context,
       v8::Extension* extension, ScriptData** cached_data,
       ScriptCompiler::CompileOptions compile_options,
       NativesFlag is_natives_code, bool is_module);
 
   static Handle<SharedFunctionInfo> CompileStreamedScript(Handle<Script> script,
                                                           ParseInfo* info,
                                                           int source_length);
 
   // Create a shared function info object (the code may be lazily compiled).
-  static Handle<SharedFunctionInfo> BuildFunctionInfo(FunctionLiteral* node,
-                                                      Handle<Script> script,
-                                                      CompilationInfo* outer);
+  static Handle<SharedFunctionInfo> GetSharedFunctionInfo(
+      FunctionLiteral* node, Handle<Script> script, CompilationInfo* outer);
 
   enum ConcurrencyMode { NOT_CONCURRENT, CONCURRENT };
 
   // Generate and return optimized code or start a concurrent optimization job.
   // In the latter case, return the InOptimizationQueue builtin.  On failure,
   // return the empty handle.
   MUST_USE_RESULT static MaybeHandle<Code> GetOptimizedCode(
       Handle<JSFunction> function,
       Handle<Code> current_code,
       ConcurrencyMode mode,
@@ skipping 28 matching lines @@
   Zone zone_;
   size_t info_zone_start_allocation_size_;
   base::ElapsedTimer timer_;
 
   DISALLOW_COPY_AND_ASSIGN(CompilationPhase);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_COMPILER_H_