X87: [date] Refactor the %_DateField intrinsic to be optimizable.

src/x87/lithium-x87.cc

Index: src/x87/lithium-x87.cc
diff --git a/src/x87/lithium-x87.cc b/src/x87/lithium-x87.cc
index 889df6164cac818d1b40487c6cae8dc33f5613f8..c0424e74312fbc844d1da1e6a779437fa7ead7de 100644
--- a/src/x87/lithium-x87.cc
+++ b/src/x87/lithium-x87.cc
@@ -1821,7 +1821,7 @@ 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);
 }