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

runtime/vm/raw_object.h

Index: runtime/vm/raw_object.h
diff --git a/runtime/vm/raw_object.h b/runtime/vm/raw_object.h
index 9f4e3bd8642263b2d23f344b8bd77d1fecb65270..c0e367f662c907090fad653c163fe07dc4b7aec1 100644
--- a/runtime/vm/raw_object.h
+++ b/runtime/vm/raw_object.h
@@ -837,10 +837,11 @@ class RawCode : public RawObject {
   }
 
   intptr_t pointer_offsets_length_;
-  // Alive: If true, the embedded object pointers will be visited during GC.
-  // This field cannot be shorter because of alignment issues on x64
+  // These fields cannot be boolean because of alignment issues on x64
   // architectures.
-  intptr_t state_bits_;  // state, is_optimized, is_alive.
+  intptr_t is_optimized_;
+  // If true, the embedded object pointers will be visited during GC.
+  intptr_t is_alive_;
 
   // Variable length data follows here.
   int32_t data_[0];
@@ -942,9 +943,9 @@ class RawExceptionHandlers : public RawObject {
   // The index into the ExceptionHandlers table corresponds to
   // the try_index of the handler.
   struct HandlerInfo {
+    intptr_t outer_try_index;  // Try block index of enclosing try block.
     intptr_t handler_pc;       // PC value of handler.
-    int16_t outer_try_index;   // Try block index of enclosing try block.
-    int16_t needs_stacktrace;  // True if a stacktrace is needed.
+    bool needs_stacktrace;     // True if a stacktrace is needed.
   };
  private:
   RAW_HEAP_OBJECT_IMPLEMENTATION(ExceptionHandlers);