Revert "Compress memory usage. Imprive speed of finding exception handle..."

runtime/vm/object.h

Index: runtime/vm/object.h
diff --git a/runtime/vm/object.h b/runtime/vm/object.h
index b6183bcbb82bd6cbaea059604ff439027c6cab6b..fe1c18582640a7f672e4197f0dc1e3882e7d41fc 100644
--- a/runtime/vm/object.h
+++ b/runtime/vm/object.h
@@ -2952,15 +2952,18 @@ class Code : public Object {
   intptr_t pointer_offsets_length() const {
     return raw_ptr()->pointer_offsets_length_;
   }
-
   bool is_optimized() const {
-    return OptimizedBit::decode(raw_ptr()->state_bits_);
+    return (raw_ptr()->is_optimized_ == 1);
+  }
+  void set_is_optimized(bool value) const {
+    raw_ptr()->is_optimized_ = value ? 1 : 0;
   }
-  void set_is_optimized(bool value) const;
   bool is_alive() const {
-    return AliveBit::decode(raw_ptr()->state_bits_);
+    return (raw_ptr()->is_alive_ == 1);
+  }
+  void set_is_alive(bool value) const {
+    raw_ptr()->is_alive_ = value ? 1 : 0;
   }
-  void set_is_alive(bool value) const;
 
   uword EntryPoint() const {
     const Instructions& instr = Instructions::Handle(instructions());
@@ -3132,17 +3135,6 @@ class Code : public Object {
   RawArray* ExtractTypeFeedbackArray() const;
 
  private:
-  void set_state_bits(intptr_t bits) const;
-
-  friend class RawCode;
-  enum {
-    kOptimizedBit = 0,
-    kAliveBit = 1,
-  };
-
-  class OptimizedBit : public BitField<bool, kOptimizedBit, 1> {};
-  class AliveBit : public BitField<bool, kAliveBit, 1> {};
-
   // An object finder visitor interface.
   class FindRawCodeVisitor : public FindObjectVisitor {
    public: