[debugger] infrastructure for side-effect-free debug-evaluate.

src/interpreter/bytecodes.h

Index: src/interpreter/bytecodes.h
diff --git a/src/interpreter/bytecodes.h b/src/interpreter/bytecodes.h
index 2c01590d2c0b9e61345bda1b97e7164c112529db..2408445af133cc0bb00a562bf35a7aa30cb7221d 100644
--- a/src/interpreter/bytecodes.h
+++ b/src/interpreter/bytecodes.h
@@ -804,6 +804,8 @@ class V8_EXPORT_PRIVATE Bytecodes final {
     }
   }
 
+  static bool BytecodeIsReadOnly(Bytecode bytecode);

[jgruber, 2017/01/10 12:46:37]

What does read-only mean in this context? A comment would be great. Maybe all
'IsReadOnly'-like names would be clearer as 'IsSideEffectFree'?

[Yang, 2017/01/10 14:14:06]

Done.

+
  private:
   static const OperandType* const kOperandTypes[];
   static const OperandTypeInfo* const kOperandTypeInfos[];