Track allocation info

src/ia32/macro-assembler-ia32.cc

Index: src/ia32/macro-assembler-ia32.cc
diff --git a/src/ia32/macro-assembler-ia32.cc b/src/ia32/macro-assembler-ia32.cc
index 0d0bf037751a8361f785844b9cc21fd198459568..169e440448aa7d8c5bc9bcc62ada3b5f28ad1e1a 100644
--- a/src/ia32/macro-assembler-ia32.cc
+++ b/src/ia32/macro-assembler-ia32.cc
@@ -2328,6 +2328,52 @@ void MacroAssembler::LoadInitialArrayMap(
 }
 
 
+void test_routine(Object* context, Object* function) {
+  context->Print();
+  function->Print();
+}
+  
+void MacroAssembler::LoadInitialArrayMap(Register function_in,
+                                         Register elements_kind,
+                                         Register map_out) {
+  Label miss, done;
+  mov(map_out, Operand(esi, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX)));
+  mov(map_out, FieldOperand(map_out, GlobalObject::kGlobalContextOffset));
+  mov(map_out, Operand(map_out,
+                       Context::SlotOffset(Context::JS_ARRAY_MAPS_INDEX)));
+  cmp(function_in, Operand(map_out,
+                           Context::SlotOffset(Context::ARRAY_FUNCTION_INDEX)));
+  j(not_equal, &miss);
+  mov(map_out, FieldOperand(map_out, elements_kind,
+                            times_half_pointer_size,
+                            FixedArrayBase::kHeaderSize));
+  jmp(&done);
+  bind(&miss);
+  mov(map_out, FieldOperand(function_in,
+                            JSFunction::kPrototypeOrInitialMapOffset));
+  bind(&done);
+}
+
+void MacroAssembler::LoadInitialArrayMap(Register function_in,
+                                         ElementsKind elements_kind,
+                                         Register map_out) {
+  Label miss, done;
+  mov(map_out, Operand(esi, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX)));
+  mov(map_out, FieldOperand(map_out, GlobalObject::kGlobalContextOffset));
+  mov(map_out, Operand(map_out,
+                       Context::SlotOffset(Context::JS_ARRAY_MAPS_INDEX)));
+  cmp(function_in, Operand(map_out,
+                           Context::SlotOffset(Context::ARRAY_FUNCTION_INDEX)));
+  j(not_equal, &miss);
+  int offset = FixedArray::kHeaderSize + elements_kind * kPointerSize;
+  mov(map_out, FieldOperand(map_out, offset));
+  jmp(&done);
+  bind(&miss);
+  mov(map_out, FieldOperand(function_in,
+                            JSFunction::kPrototypeOrInitialMapOffset));
+  bind(&done);
+}
+
 void MacroAssembler::LoadGlobalFunction(int index, Register function) {
   // Load the global or builtins object from the current context.
   mov(function,