Revert of [builtins] Refactor the remaining Date builtins.

src/crankshaft/ppc/lithium-codegen-ppc.cc

Index: src/crankshaft/ppc/lithium-codegen-ppc.cc
diff --git a/src/crankshaft/ppc/lithium-codegen-ppc.cc b/src/crankshaft/ppc/lithium-codegen-ppc.cc
index 4c035392ab649cee2fc2b7ac0eb498e90608b5d2..92f43672a73403a818c550966bff3b9434c84031 100644
--- a/src/crankshaft/ppc/lithium-codegen-ppc.cc
+++ b/src/crankshaft/ppc/lithium-codegen-ppc.cc
@@ -1810,6 +1810,41 @@
   Register result = ToRegister(instr->result());
   Register map = ToRegister(instr->value());
   __ EnumLength(result, map);
+}
+
+
+void LCodeGen::DoDateField(LDateField* instr) {
+  Register object = ToRegister(instr->date());
+  Register result = ToRegister(instr->result());
+  Register scratch = ToRegister(instr->temp());
+  Smi* index = instr->index();
+  DCHECK(object.is(result));
+  DCHECK(object.is(r3));
+  DCHECK(!scratch.is(scratch0()));
+  DCHECK(!scratch.is(object));
+
+  if (index->value() == 0) {
+    __ LoadP(result, FieldMemOperand(object, JSDate::kValueOffset));
+  } else {
+    Label runtime, done;
+    if (index->value() < JSDate::kFirstUncachedField) {
+      ExternalReference stamp = ExternalReference::date_cache_stamp(isolate());
+      __ mov(scratch, Operand(stamp));
+      __ LoadP(scratch, MemOperand(scratch));
+      __ LoadP(scratch0(), FieldMemOperand(object, JSDate::kCacheStampOffset));
+      __ cmp(scratch, scratch0());
+      __ bne(&runtime);
+      __ LoadP(result,
+               FieldMemOperand(object, JSDate::kValueOffset +
+                                           kPointerSize * index->value()));
+      __ b(&done);
+    }
+    __ bind(&runtime);
+    __ PrepareCallCFunction(2, scratch);
+    __ LoadSmiLiteral(r4, index);
+    __ CallCFunction(ExternalReference::get_date_field_function(isolate()), 2);
+    __ bind(&done);
+  }
 }