Nested deoptimization environments.

runtime/vm/il_printer.cc

Index: runtime/vm/il_printer.cc
diff --git a/runtime/vm/il_printer.cc b/runtime/vm/il_printer.cc
index c8bc854b952813eaadcd475d756f4ad32d870088..6a1dc97dee42ec9f95a8413833dc77358d6b1155 100644
--- a/runtime/vm/il_printer.cc
+++ b/runtime/vm/il_printer.cc
@@ -436,9 +436,8 @@ void GraphEntryInstr::PrintTo(BufferFormatter* f) const {
   f->Print("%2"Pd": [graph]", block_id());
   if (start_env_ != NULL) {
     f->Print("\n{\n");
-    const GrowableArray<Value*>& values = start_env_->values();
-    for (intptr_t i = 0; i < values.length(); i++) {
-      Definition* def = values[i]->definition();
+    for (intptr_t i = 0; i < start_env_->Length(); i++) {
+      Definition* def = start_env_->ValueAt(i)->definition();
       f->Print("  ");
       def->PrintTo(f);
       f->Print("\n");
@@ -796,6 +795,7 @@ void Environment::PrintTo(BufferFormatter* f) const {
     }
   }
   f->Print(" }");
+  if (outer_ != NULL) outer_->PrintTo(f);
 }
 
 }  // namespace dart