VM: Explicitly load function and context before calling a closure.

runtime/vm/il_printer.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/il_printer.h"
 
 #include "vm/intermediate_language.h"
 #include "vm/os.h"
 #include "vm/parser.h"
 
@@ skipping 337 matching lines @@
   f->Print(")");
 }
 
 
 void AssertBooleanInstr::PrintOperandsTo(BufferFormatter* f) const {
   value()->PrintTo(f);
 }
 
 
 void ClosureCallInstr::PrintOperandsTo(BufferFormatter* f) const {
+  f->Print("function=");
+  InputAt(0)->PrintTo(f);
   for (intptr_t i = 0; i < ArgumentCount(); ++i) {
-    if (i > 0) f->Print(", ");
+    f->Print(", ");
     PushArgumentAt(i)->value()->PrintTo(f);
   }
 }
 
 
 void InstanceCallInstr::PrintOperandsTo(BufferFormatter* f) const {
   f->Print("%s", function_name().ToCString());
   for (intptr_t i = 0; i < ArgumentCount(); ++i) {
     f->Print(", ");
     PushArgumentAt(i)->value()->PrintTo(f);
@@ skipping 699 matching lines @@
 }
 
 const char* Environment::ToCString() const {
   char buffer[1024];
   BufferFormatter bf(buffer, 1024);
   PrintTo(&bf);
   return Isolate::Current()->current_zone()->MakeCopyOfString(buffer);
 }
 
 }  // namespace dart