Port FastNewClosureStub introduced for ia32 in r3477 to x64 and arm.

src/ia32/codegen-ia32.cc

 // Copyright 2006-2009 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 3892 matching lines @@
   frame_->SpillAll();
   frame_->CallRuntime(Runtime::kDebugBreak, 0);
   // Ignore the return value.
 #endif
 }
 
 
 void CodeGenerator::InstantiateBoilerplate(Handle<JSFunction> boilerplate) {
   ASSERT(boilerplate->IsBoilerplate());
 
+  // The inevitable call will sync frame elements to memory anyway, so
+  // we do it eagerly to allow us to push the arguments directly into
+  // place.
+  frame_->SyncRange(0, frame_->element_count() - 1);
+
   // Use the fast case closure allocation code that allocates in new
   // space for nested functions that don't need literals cloning.
   if (scope()->is_function_scope() && boilerplate->NumberOfLiterals() == 0) {
     FastNewClosureStub stub;
-    frame_->Push(boilerplate);
+    frame_->EmitPush(Immediate(boilerplate));
     Result answer = frame_->CallStub(&stub, 1);
     frame_->Push(&answer);
   } else {
     // Call the runtime to instantiate the function boilerplate
-    // object.  The inevitable call will sync frame elements to memory
-    // anyway, so we do it eagerly to allow us to push the arguments
-    // directly into place.
-    frame_->SyncRange(0, frame_->element_count() - 1);
-
-    // Create a new closure.
+    // object.
     frame_->EmitPush(esi);
     frame_->EmitPush(Immediate(boilerplate));
     Result result = frame_->CallRuntime(Runtime::kNewClosure, 2);
     frame_->Push(&result);
   }
 }
 
 
 void CodeGenerator::VisitFunctionLiteral(FunctionLiteral* node) {
   Comment cmnt(masm_, "[ FunctionLiteral");
@@ skipping 5832 matching lines @@
 
   // Call the runtime; it returns -1 (less), 0 (equal), or 1 (greater)
   // tagged as a small integer.
   __ bind(&runtime);
   __ TailCallRuntime(ExternalReference(Runtime::kStringCompare), 2, 1);
 }
 
 #undef __
 
 } }  // namespace v8::internal