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

src/mips/lithium-mips.cc

Index: src/mips/lithium-mips.cc
diff --git a/src/mips/lithium-mips.cc b/src/mips/lithium-mips.cc
index eebab79e4dfd1306302517f537ae05a8c0b40cb2..77c5836f73184683d8fd4567ba15d0d599bafb31 100644
--- a/src/mips/lithium-mips.cc
+++ b/src/mips/lithium-mips.cc
@@ -1802,7 +1802,7 @@ LInstruction* LChunkBuilder::DoDateField(HDateField* instr) {
   LOperand* object = UseFixed(instr->value(), a0);
   LDateField* result =
       new(zone()) LDateField(object, FixedTemp(a1), instr->index());
-  return MarkAsCall(DefineFixed(result, v0), instr, CAN_DEOPTIMIZE_EAGERLY);
+  return MarkAsCall(DefineFixed(result, v0), instr, CANNOT_DEOPTIMIZE_EAGERLY);
 }