Handle stack frames differently inside and on the boundary of wasm.

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 724c4d0f593782250aaa845c6ec38108ddd4a2b3..eafa22576c880ad5db676b2b687e63fc27bb6dd0 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -4907,6 +4907,13 @@ class Code: public HeapObject {
     FAST
   };
 
+  // Types of wasm functions.
+  enum WasmFunctionType {
+    WASM_INNER_FUNCTION,
+    WASM_TO_JS,
+    JS_TO_WASM,
+  };
+
   static const int kPrologueOffsetNotSet = -1;
 
 #ifdef ENABLE_DISASSEMBLER
@@ -4984,6 +4991,8 @@ class Code: public HeapObject {
 
   inline StubType type();  // Only valid for monomorphic IC stubs.
 
+  inline WasmFunctionType wasm_function_type();  // Only valid for wasm.
+
   // Testers for IC stub kinds.
   inline bool is_inline_cache_stub();
   inline bool is_debug_stub();
@@ -5140,7 +5149,11 @@ class Code: public HeapObject {
   static inline Flags ComputeFlags(
       Kind kind, InlineCacheState ic_state = UNINITIALIZED,
       ExtraICState extra_ic_state = kNoExtraICState, StubType type = NORMAL,
-      CacheHolderFlag holder = kCacheOnReceiver);
+      CacheHolderFlag holder = kCacheOnReceiver,
+      WasmFunctionType = WASM_INNER_FUNCTION);
+
+  static inline Flags ComputeWasmFlags(Kind kind,
+                                       WasmFunctionType = WASM_INNER_FUNCTION);
 
   static inline Flags ComputeMonomorphicFlags(
       Kind kind, ExtraICState extra_ic_state = kNoExtraICState,
@@ -5152,6 +5165,7 @@ class Code: public HeapObject {
 
   static inline InlineCacheState ExtractICStateFromFlags(Flags flags);
   static inline StubType ExtractTypeFromFlags(Flags flags);
+  static inline WasmFunctionType ExtractWasmFunctionTypeFromFlags(Flags flags);
   static inline CacheHolderFlag ExtractCacheHolderFromFlags(Flags flags);
   static inline Kind ExtractKindFromFlags(Flags flags);
   static inline ExtraICState ExtractExtraICStateFromFlags(Flags flags);
@@ -5323,8 +5337,10 @@ class Code: public HeapObject {
   class TypeField : public BitField<StubType, 3, 1> {};
   class CacheHolderField : public BitField<CacheHolderFlag, 4, 2> {};
   class KindField : public BitField<Kind, 6, 5> {};
-  class ExtraICStateField: public BitField<ExtraICState, 11,
-      PlatformSmiTagging::kSmiValueSize - 11 + 1> {};  // NOLINT
+  class WasmFunctionTypeField : public BitField<WasmFunctionType, 11, 2> {};
+  class ExtraICStateField
+      : public BitField<ExtraICState, 13, PlatformSmiTagging::kSmiValueSize -
+                                              13 + 1> {};  // NOLINT
 
   // KindSpecificFlags1 layout (STUB and OPTIMIZED_FUNCTION)
   static const int kStackSlotsFirstBit = 0;