Compile FastCloneShallowObjectStub using Crankshaft.

src/arm/full-codegen-arm.cc

Index: src/arm/full-codegen-arm.cc
diff --git a/src/arm/full-codegen-arm.cc b/src/arm/full-codegen-arm.cc
index cb83860d6ab96b5e35d938b7ec1462b395825e34..9c8f2de39a31d34acff0143d59bf7ccd25ac6df1 100644
--- a/src/arm/full-codegen-arm.cc
+++ b/src/arm/full-codegen-arm.cc
@@ -1579,7 +1579,7 @@ void FullCodeGenerator::EmitAccessor(Expression* expression) {
 void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) {
   Comment cmnt(masm_, "[ ObjectLiteral");
   Handle<FixedArray> constant_properties = expr->constant_properties();
-  __ ldr(r3, MemOperand(fp,  JavaScriptFrameConstants::kFunctionOffset));
+  __ ldr(r3, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
   __ ldr(r3, FieldMemOperand(r3, JSFunction::kLiteralsOffset));
   __ mov(r2, Operand(Smi::FromInt(expr->literal_index())));
   __ mov(r1, Operand(constant_properties));
@@ -1590,12 +1590,13 @@ void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) {
       ? ObjectLiteral::kHasFunction
       : ObjectLiteral::kNoFlags;
   __ mov(r0, Operand(Smi::FromInt(flags)));
-  __ Push(r3, r2, r1, r0);
   int properties_count = constant_properties->length() / 2;
   if (expr->depth() > 1) {
+    __ Push(r3, r2, r1, r0);
     __ CallRuntime(Runtime::kCreateObjectLiteral, 4);
-  } else if (flags != ObjectLiteral::kFastElements ||
+  } else if (Serializer::enabled() || flags != ObjectLiteral::kFastElements ||
       properties_count > FastCloneShallowObjectStub::kMaximumClonedProperties) {
+    __ Push(r3, r2, r1, r0);
     __ CallRuntime(Runtime::kCreateObjectLiteralShallow, 4);
   } else {
     FastCloneShallowObjectStub stub(properties_count);