Merge r10006, r10087 and r10126 from bleeding edge to the 3.6 branch.

src/hydrogen-instructions.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 4040 matching lines @@
 class HRegExpLiteral: public HMaterializedLiteral<1> {
  public:
   HRegExpLiteral(HValue* context,
                  Handle<String> pattern,
                  Handle<String> flags,
                  int literal_index)
       : HMaterializedLiteral<1>(literal_index, 0),
         pattern_(pattern),
         flags_(flags) {
     SetOperandAt(0, context);
+    SetAllSideEffects();
   }
 
   HValue* context() { return OperandAt(0); }
   Handle<String> pattern() { return pattern_; }
   Handle<String> flags() { return flags_; }
 
   virtual Representation RequiredInputRepresentation(int index) const {
     return Representation::Tagged();
   }
 
@@ skipping 130 matching lines @@
 
   DECLARE_CONCRETE_INSTRUCTION(In)
 };
 
 #undef DECLARE_INSTRUCTION
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_INSTRUCTIONS_H_