Optimize calls to object literal properties that are initialized with a funct...

src/ia32/lithium-codegen-ia32.cc

Index: src/ia32/lithium-codegen-ia32.cc
===================================================================
--- src/ia32/lithium-codegen-ia32.cc	(revision 6540)
+++ src/ia32/lithium-codegen-ia32.cc	(working copy)
@@ -3346,7 +3346,13 @@
   __ push(FieldOperand(eax, JSFunction::kLiteralsOffset));
   __ push(Immediate(Smi::FromInt(instr->hydrogen()->literal_index())));
   __ push(Immediate(instr->hydrogen()->constant_properties()));
-  __ push(Immediate(Smi::FromInt(instr->hydrogen()->fast_elements() ? 1 : 0)));
+  int flags = instr->hydrogen()->fast_elements()
+      ? ObjectLiteral::kFastElements
+      : ObjectLiteral::kNoFlags;
+  flags |= instr->hydrogen()->has_function()
+      ? ObjectLiteral::kHasFunction
+      : ObjectLiteral::kNoFlags;
+  __ push(Immediate(Smi::FromInt(flags)));
 
   // Pick the right runtime function to call.
   if (instr->hydrogen()->depth() > 1) {
@@ -3357,6 +3363,13 @@
 }
 
 
+void LCodeGen::DoToFastProperties(LToFastProperties* instr) {
+  ASSERT(ToRegister(instr->InputAt(0)).is(eax));
+  __ push(eax);
+  CallRuntime(Runtime::kToFastProperties, 1, instr);
+}
+
+
 void LCodeGen::DoRegExpLiteral(LRegExpLiteral* instr) {
   NearLabel materialized;
   // Registers will be used as follows: