Liveness analysis for environment slots in Hydrogen

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 969 matching lines @@
   induction_base()->PrintNameTo(stream);
   stream->Add(")");
 }
 
 
 void HDummyUse::PrintDataTo(StringStream* stream) {
   value()->PrintNameTo(stream);
 }
 
 
+void HEnvironmentBind::PrintDataTo(StringStream* stream) {
+  stream->Add("var[%d]", index());
+}
+
+
+void HEnvironmentLookup::PrintDataTo(StringStream* stream) {
+  stream->Add("var[%d]", index());
+}
+
+
 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 1053 matching lines @@
 void HDeoptimize::PrintDataTo(StringStream* stream) {
   if (OperandCount() == 0) return;
   OperandAt(0)->PrintNameTo(stream);
   for (int i = 1; i < OperandCount(); ++i) {
     stream->Add(" ");
     OperandAt(i)->PrintNameTo(stream);
   }
 }
 
 
+void HEnterInlined::RegisterReturnTarget(HBasicBlock* return_target,
+                                         Zone* zone) {
+  ASSERT(return_target->IsInlineReturnTarget());
+  return_targets_.Add(return_target, zone);
+}
+
+
 void HEnterInlined::PrintDataTo(StringStream* stream) {
   SmartArrayPointer<char> name = function()->debug_name()->ToCString();
   stream->Add("%s, id=%d", *name, function()->id().ToInt());
 }
 
 
 static bool IsInteger32(double value) {
   double roundtrip_value = static_cast<double>(static_cast<int32_t>(value));
   return BitCast<int64_t>(roundtrip_value) == BitCast<int64_t>(value);
 }
@@ skipping 1589 matching lines @@
 
 
 void HCheckFunction::Verify() {
   HInstruction::Verify();
   ASSERT(HasNoUses());
 }
 
 #endif
 
 } }  // namespace v8::internal