Stop attaching try_index to individual instructions put it at block entry instead.

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 480 matching lines @@
 void ParameterInstr::PrintTo(BufferFormatter* f) const {
   f->Print("    v%d <- parameter(%d)",
            HasSSATemp() ? ssa_temp_index() : temp_index(),
            index());
   PrintPropagatedType(f, *this);
 }
 
 
 void TargetEntryInstr::PrintTo(BufferFormatter* f) const {
   f->Print("%2d: [target", block_id());
-  if (HasTryIndex()) {
-    f->Print(" catch %d]", try_index());
+  if (IsCatchEntry()) {
+    f->Print(" catch %d]", catch_try_index());
   } else {
     f->Print("]");
   }
   if (HasParallelMove()) {
     f->Print("\n");
     parallel_move()->PrintTo(f);
   }
 }
 
 
@@ skipping 243 matching lines @@
 
 void ParameterInstr::PrintToVisualizer(BufferFormatter* f) const {
   ASSERT(HasSSATemp());
   ASSERT(temp_index() == -1);
   f->Print("v%d Parameter(%d)", ssa_temp_index(), index());
 }
 
 
 void TargetEntryInstr::PrintToVisualizer(BufferFormatter* f) const {
   f->Print("_ [target");
-  if (HasTryIndex()) {
-    f->Print(" catch %d]", try_index());
+  if (IsCatchEntry()) {
+    f->Print(" catch %d]", catch_try_index());
   } else {
     f->Print("]");
   }
 }
 
 
 void BindInstr::PrintToVisualizer(BufferFormatter* f) const {
   if (!is_used()) {
     f->Print("_ ");
   } else if (HasSSATemp()) {
@@ skipping 55 matching lines @@
     if ((locations_ != NULL) && !locations_[i].IsInvalid()) {
       f->Print(" [");
       locations_[i].PrintTo(f);
       f->Print("]");
     }
   }
   f->Print(" }");
 }
 
 }  // namespace dart