[date] Refactor the %_DateField intrinsic to be optimizable.

src/ia32/lithium-ia32.cc

Index: src/ia32/lithium-ia32.cc
diff --git a/src/ia32/lithium-ia32.cc b/src/ia32/lithium-ia32.cc
index cecfadd371a0aea633828981cd2c35a75aabbfbf..e245ba725f4b5ab4ddc5ad561a92c351b3048991 100644
--- a/src/ia32/lithium-ia32.cc
+++ b/src/ia32/lithium-ia32.cc
@@ -1816,7 +1816,7 @@ LInstruction* LChunkBuilder::DoDateField(HDateField* instr) {
   LOperand* date = UseFixed(instr->value(), eax);
   LDateField* result =
       new(zone()) LDateField(date, FixedTemp(ecx), instr->index());
-  return MarkAsCall(DefineFixed(result, eax), instr, CAN_DEOPTIMIZE_EAGERLY);
+  return MarkAsCall(DefineFixed(result, eax), instr, CANNOT_DEOPTIMIZE_EAGERLY);
 }