MIPS: Symbols for type cells.

src/mips/lithium-codegen-mips.cc

Index: src/mips/lithium-codegen-mips.cc
diff --git a/src/mips/lithium-codegen-mips.cc b/src/mips/lithium-codegen-mips.cc
index 72f3296f54cdeca539acccdb6c158bb6ef6e03cb..74b53155d3c4be94c713d172fc9bdac3ed57bec5 100644
--- a/src/mips/lithium-codegen-mips.cc
+++ b/src/mips/lithium-codegen-mips.cc
@@ -3883,8 +3883,9 @@ void LCodeGen::DoCallNew(LCallNew* instr) {
 
   __ li(a0, Operand(instr->arity()));
   // No cell in a2 for construct type feedback in optimized code
-  Handle<Object> undefined_value(isolate()->factory()->undefined_value());
-  __ li(a2, Operand(undefined_value));
+  Handle<Object> megamorphic_symbol =
+      TypeFeedbackInfo::MegamorphicSentinel(isolate());
+  __ li(a2, Operand(megamorphic_symbol));
   CallConstructStub stub(NO_CALL_FUNCTION_FLAGS);
   CallCode(stub.GetCode(isolate()), RelocInfo::CONSTRUCT_CALL, instr);
 }
@@ -3896,7 +3897,7 @@ void LCodeGen::DoCallNewArray(LCallNewArray* instr) {
   ASSERT(ToRegister(instr->result()).is(v0));
 
   __ li(a0, Operand(instr->arity()));
-  __ li(a2, Operand(factory()->undefined_value()));
+  __ li(a2, Operand(TypeFeedbackInfo::MegamorphicSentinel(isolate())));
   ElementsKind kind = instr->hydrogen()->elements_kind();
   AllocationSiteOverrideMode override_mode =
       (AllocationSite::GetMode(kind) == TRACK_ALLOCATION_SITE)