Don't emit code for instructions that are hiding behind an HSoftDeoptimize

src/hydrogen-instructions.cc

 // Copyright 2012 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 719 matching lines @@
   }
 
   // Verify that instructions that can be eliminated by GVN have overridden
   // HValue::DataEquals.  The default implementation is UNREACHABLE.  We
   // don't actually care whether DataEquals returns true or false here.
   if (CheckFlag(kUseGVN)) DataEquals(this);
 }
 #endif
 
 
+void HDummyUse::PrintDataTo(StringStream* stream) {
+  value()->PrintNameTo(stream);
+}
+
+
 void HUnaryCall::PrintDataTo(StringStream* stream) {
   value()->PrintNameTo(stream);
   stream->Add(" ");
   stream->Add("#%d", argument_count());
 }
 
 
 void HBinaryCall::PrintDataTo(StringStream* stream) {
   first()->PrintNameTo(stream);
   stream->Add(" ");
@@ skipping 2015 matching lines @@
 
 
 void HCheckFunction::Verify() {
   HInstruction::Verify();
   ASSERT(HasNoUses());
 }
 
 #endif
 
 } }  // namespace v8::internal