[ic] [stubs] Remove InlineCacheState field from the code flags.

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 5a010b51c9ca899c5e8b1409b41d81851d9a979e..0540bc0c6825088a76d30d6bcc88a1a496b712ed 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -4969,7 +4969,6 @@ class Code: public HeapObject {
 
   // [flags]: Access to specific code flags.
   inline Kind kind();
-  inline InlineCacheState ic_state();  // Only valid for IC stubs.
   inline ExtraICState extra_ic_state();  // Only valid for IC stubs.
 
   // Testers for IC stub kinds.
@@ -4982,7 +4981,6 @@ class Code: public HeapObject {
   inline bool is_to_boolean_ic_stub();
   inline bool is_optimized_code();
   inline bool is_wasm_code();
-  inline bool embeds_maps_weakly();
 
   inline bool IsCodeStubOrIC();
 
@@ -5105,18 +5103,12 @@ class Code: public HeapObject {
 
   // Flags operations.
   static inline Flags ComputeFlags(
-      Kind kind, InlineCacheState ic_state = UNINITIALIZED,
-      ExtraICState extra_ic_state = kNoExtraICState,
-      CacheHolderFlag holder = kCacheOnReceiver);
-
-  static inline Flags ComputeMonomorphicFlags(
       Kind kind, ExtraICState extra_ic_state = kNoExtraICState,
       CacheHolderFlag holder = kCacheOnReceiver);
 
   static inline Flags ComputeHandlerFlags(
       Kind handler_kind, CacheHolderFlag holder = kCacheOnReceiver);
 
-  static inline InlineCacheState ExtractICStateFromFlags(Flags flags);
   static inline CacheHolderFlag ExtractCacheHolderFromFlags(Flags flags);
   static inline Kind ExtractKindFromFlags(Flags flags);
   static inline ExtraICState ExtractExtraICStateFromFlags(Flags flags);
@@ -5288,12 +5280,11 @@ class Code: public HeapObject {
   class ProfilerTicksField : public BitField<int, 4, 28> {};
 
   // Flags layout.  BitField<type, shift, size>.
-  class ICStateField : public BitField<InlineCacheState, 0, 3> {};
-  class CacheHolderField : public BitField<CacheHolderFlag, 3, 2> {};
-  class KindField : public BitField<Kind, 5, 5> {};
-  class ExtraICStateField
-      : public BitField<ExtraICState, 10, PlatformSmiTagging::kSmiValueSize -
-                                              10 + 1> {};  // NOLINT
+  class CacheHolderField : public BitField<CacheHolderFlag, 0, 2> {};
+  class KindField : public BitField<Kind, CacheHolderField::kNext, 5> {};
+  class ExtraICStateField : public BitField<ExtraICState, KindField::kNext,
+                                            PlatformSmiTagging::kSmiValueSize -
+                                                KindField::kNext + 1> {};
 
   // KindSpecificFlags1 layout (STUB, BUILTIN and OPTIMIZED_FUNCTION)
   static const int kStackSlotsFirstBit = 0;