Store SharedFunctionInfos of a Script in a FixedArray indexed by their ID

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 56f6b70a6565444f4000e741e281cdd16b701851..3a601adf32bdf3a40ca3bfba6b69fabb58402873 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -7083,7 +7083,7 @@ class Script: public Struct {
 
   // [shared_function_infos]: weak fixed array containing all shared
   // function infos created from this script.
-  DECL_ACCESSORS(shared_function_infos, Object)
+  DECL_ACCESSORS(shared_function_infos, FixedArray)
 
   // [flags]: Holds an exciting bitfield.
   DECL_INT_ACCESSORS(flags)
@@ -7702,9 +7702,6 @@ class SharedFunctionInfo: public HeapObject {
   // Indicates that the the shared function info is deserialized from cache.
   DECL_BOOLEAN_ACCESSORS(deserialized)
 
-  // Indicates that the the shared function info has never been compiled before.
-  DECL_BOOLEAN_ACCESSORS(never_compiled)
-
   // Whether this function was created from a FunctionDeclaration.
   DECL_BOOLEAN_ACCESSORS(is_declaration)
 
@@ -7799,10 +7796,12 @@ class SharedFunctionInfo: public HeapObject {
     SharedFunctionInfo* Next();
 
    private:
-    bool NextScript();
+    void NextScript();
 
     Script::Iterator script_iterator_;
     WeakFixedArray::Iterator sfi_iterator_;
+    Script* current_script_;
+    int index_;
     DisallowHeapAllocation no_gc_;
     DISALLOW_COPY_AND_ASSIGN(Iterator);
   };
@@ -7964,7 +7963,7 @@ class SharedFunctionInfo: public HeapObject {
     kAllowLazyCompilation,
     kMarkedForTierUp,
     kOptimizationDisabled,
-    kNeverCompiled,
+    kIsClassFieldInitializer,
     kNative,
     kStrictModeFunction,
     kUsesArguments,
@@ -7986,7 +7985,6 @@ class SharedFunctionInfo: public HeapObject {
     kIsDeclaration,
     kIsAsmWasmBroken,
     kRequiresClassFieldInit,
-    kIsClassFieldInitializer,
     kCompilerHintsCount,  // Pseudo entry
   };
   // kFunctionKind has to be byte-aligned