Revert of [compiler] Drop the CompareNilIC.

src/ia32/interface-descriptors-ia32.cc

Index: src/ia32/interface-descriptors-ia32.cc
diff --git a/src/ia32/interface-descriptors-ia32.cc b/src/ia32/interface-descriptors-ia32.cc
index f138bff38fc252727e1ed7292c41c46927e7c947..b36cf63b874b12ef9d70255dc47956b138c11858 100644
--- a/src/ia32/interface-descriptors-ia32.cc
+++ b/src/ia32/interface-descriptors-ia32.cc
@@ -324,6 +324,13 @@
 }
 
 
+void CompareNilDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {eax};
+  data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
+}
+
+
 void ToBooleanDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {eax};