Allocation Info Tracking, continued.

src/arm/lithium-codegen-arm.cc

Index: src/arm/lithium-codegen-arm.cc
diff --git a/src/arm/lithium-codegen-arm.cc b/src/arm/lithium-codegen-arm.cc
index bd54068a267f4bca1e9179d728da81378eac10f6..c5cf0ee17a6ab4b98d6e47c827bd04c75049e59d 100644
--- a/src/arm/lithium-codegen-arm.cc
+++ b/src/arm/lithium-codegen-arm.cc
@@ -4283,9 +4283,12 @@ void LCodeGen::DoCallNew(LCallNew* instr) {
   ASSERT(ToRegister(instr->result()).is(r0));
 
   __ mov(r0, Operand(instr->arity()));
-  // No cell in r2 for construct type feedback in optimized code
-  Handle<Object> undefined_value(isolate()->heap()->undefined_value());
-  __ mov(r2, Operand(undefined_value));
+  if (FLAG_optimize_constructed_arrays) {
+    // No cell in r2 for construct type feedback in optimized code
+    Handle<Object> undefined_value(isolate()->heap()->undefined_value(),
+                                   isolate());
+    __ mov(r2, Operand(undefined_value));
+  }
   CallConstructStub stub(NO_CALL_FUNCTION_FLAGS);
   CallCode(stub.GetCode(isolate()), RelocInfo::CONSTRUCT_CALL, instr);
 }
@@ -4294,6 +4297,7 @@ void LCodeGen::DoCallNew(LCallNew* instr) {
 void LCodeGen::DoCallNewArray(LCallNewArray* instr) {
   ASSERT(ToRegister(instr->constructor()).is(r1));
   ASSERT(ToRegister(instr->result()).is(r0));
+  ASSERT(FLAG_optimize_constructed_arrays);
 
   __ mov(r0, Operand(instr->arity()));
   __ mov(r2, Operand(instr->hydrogen()->property_cell()));