Liveness analysis for environment slots in Hydrogen

src/hydrogen-instructions.cc

Index: src/hydrogen-instructions.cc
diff --git a/src/hydrogen-instructions.cc b/src/hydrogen-instructions.cc
index b7473879df21f4085e614a6c609749864de29d80..51d098a1ead8edac1dfcb5b322e8ff48635e7678 100644
--- a/src/hydrogen-instructions.cc
+++ b/src/hydrogen-instructions.cc
@@ -987,6 +987,11 @@ void HDummyUse::PrintDataTo(StringStream* stream) {
 }
 
 
+void HEnvironmentMarker::PrintDataTo(StringStream* stream) {
+  stream->Add("%s var[%d]", kind() == BIND ? "bind" : "lookup", index());
+}
+
+
 void HUnaryCall::PrintDataTo(StringStream* stream) {
   value()->PrintNameTo(stream);
   stream->Add(" ");
@@ -2060,6 +2065,13 @@ void HDeoptimize::PrintDataTo(StringStream* 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());