Generate a custom OSR entrypoint for OSR compiles on all platforms, and transition to optimized cod…

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 973 matching lines @@
 
 void HNumericConstraint::PrintDataTo(StringStream* stream) {
   stream->Add("(");
   constrained_value()->PrintNameTo(stream);
   stream->Add(" %s ", relation().Mnemonic());
   related_value()->PrintNameTo(stream);
   stream->Add(")");
 }
 
 
+void HUnknownOSRValue::PrintDataTo(StringStream *stream) {
+  const char* type = "expression";
+  if (environment_->is_local_index(index_)) type = "local";
+  if (environment_->is_special_index(index_)) type = "special";
+  if (environment_->is_parameter_index(index_)) type = "parameter";
+  stream->Add("%s @ %d", type, index_);
+}
+
+
 HInductionVariableAnnotation* HInductionVariableAnnotation::AddToGraph(
     HPhi* phi,
     NumericRelation relation,
     int operand_index) {
   HInductionVariableAnnotation* result =
       new(phi->block()->zone()) HInductionVariableAnnotation(phi, relation,
                                                              operand_index);
   result->InsertAfter(phi->block()->first());
   return result;
 }
@@ skipping 3465 matching lines @@
       break;
     case kExternalMemory:
       stream->Add("[external-memory]");
       break;
   }
 
   stream->Add("@%d", offset());
 }
 
 } }  // namespace v8::internal