Encode any deoptimizer entry in serialized data.

src/external-reference-table.h

Index: src/external-reference-table.h
diff --git a/src/external-reference-table.h b/src/external-reference-table.h
index 4b167cec721ebc6535b04411c98dbc922a4839eb..6853466289c8d02a792277e8cfc854510515472d 100644
--- a/src/external-reference-table.h
+++ b/src/external-reference-table.h
@@ -34,7 +34,11 @@ class ExternalReferenceTable {
 
   static const char* ResolveSymbol(void* address);
 
-  static const int kDeoptTableSerializeEntryCount = 64;
+  // NOTE: SnapshotByteSink::PutInt reserves top 2 bits of integer
+  static const uint32_t kSpecialIdMask = 7 << 27;
+  static const uint32_t kEagerDeoptFlag = 1 << 27;
+  static const uint32_t kLazyDeoptFlag = 2 << 27;
+  static const uint32_t kSoftDeoptFlag = 3 << 27;

[Yang, 2017/03/31 06:58:16]

We can have at most 16k entries. See Deoptimizer::kMaxNumberOfEntries

With this CL, I think we can also remove Deoptimizer::kMinNumberOfEntries

 
  private:
   struct ExternalReferenceEntry {
@@ -62,7 +66,6 @@ class ExternalReferenceTable {
   void AddIsolateAddresses(Isolate* isolate);
   void AddAccessors(Isolate* isolate);
   void AddStubCache(Isolate* isolate);
-  void AddDeoptEntries(Isolate* isolate);
   void AddApiReferences(Isolate* isolate);
 
   List<ExternalReferenceEntry> refs_;