Revert "Add a premonomorphic state to the call target cache."

src/ia32/code-stubs-ia32.cc

Index: src/ia32/code-stubs-ia32.cc
diff --git a/src/ia32/code-stubs-ia32.cc b/src/ia32/code-stubs-ia32.cc
index e8e721c9e9e9fc6df57918d0f9b5d66bdea3a69d..78824195df456e2787c6be0f12e76c77ec56e125 100644
--- a/src/ia32/code-stubs-ia32.cc
+++ b/src/ia32/code-stubs-ia32.cc
@@ -2362,26 +2362,10 @@ static void GenerateRecordCallTarget(MacroAssembler* masm) {
 
   __ bind(&miss);
 
-  // A monomorphic miss (i.e, here the cache is not uninitialized or
-  // pre-monomorphic) goes megamorphic.
-  Label not_uninitialized;
+  // A monomorphic miss (i.e, here the cache is not uninitialized) goes
+  // megamorphic.
   __ cmp(ecx, Immediate(TypeFeedbackInfo::UninitializedSentinel(isolate)));
-  __ j(not_equal, &not_uninitialized);
-
-  // PremonomorphicSentinel is an immortal immovable object (null) so no
-  // write-barrier is needed.
-  __ mov(FieldOperand(ebx, edx, times_half_pointer_size,
-                      FixedArray::kHeaderSize),
-         Immediate(TypeFeedbackInfo::PremonomorphicSentinel(isolate)));
-  __ jmp(&done, Label::kFar);
-
-  // If the cache isn't uninitialized, it is either premonomorphic or
-  // monomorphic. If it is premonomorphic, we initialize it thus making
-  // it monomorphic. Otherwise, we go megamorphic.
-  __ bind(&not_uninitialized);
-  __ cmp(ecx, Immediate(TypeFeedbackInfo::PremonomorphicSentinel(isolate)));
   __ j(equal, &initialize);
-
   // MegamorphicSentinel is an immortal immovable object (undefined) so no
   // write-barrier is needed.
   __ bind(&megamorphic);