*** old/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir/src/org/graalvm/compiler/lir/alloc/lsra/IntervalWalker.java	Fri Jul  7 09:30:38 2017
--- new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir/src/org/graalvm/compiler/lir/alloc/lsra/IntervalWalker.java	Fri Jul  7 09:30:38 2017

*** 20,30 ****
--- 20,30 ----
   * or visit www.oracle.com if you need additional information or have any
   * questions.
   */
  package org.graalvm.compiler.lir.alloc.lsra;
  
! import org.graalvm.compiler.debug.DebugContext;
  import org.graalvm.compiler.debug.Indent;
  import org.graalvm.compiler.lir.alloc.lsra.Interval.RegisterBinding;
  import org.graalvm.compiler.lir.alloc.lsra.Interval.RegisterBindingLists;
  import org.graalvm.compiler.lir.alloc.lsra.Interval.State;
  

*** 231,241 ****
--- 231,242 ----
  
              // call walkTo even if currentPosition == id
              walkTo(State.Active, opId);
              walkTo(State.Inactive, opId);
  
              try (Indent indent = Debug.logAndIndent("walk to op %d", opId)) {
+             DebugContext debug = allocator.getDebug();
+             try (Indent indent = debug.logAndIndent("walk to op %d", opId)) {
                  currentInterval.state = State.Active;
                  if (activateCurrent(currentInterval)) {
                      activeLists.addToListSortedByCurrentFromPositions(currentBinding, currentInterval);
                      intervalMoved(currentInterval, State.Unhandled, State.Active);
                  }

*** 255,266 ****
--- 256,268 ----
      }
  
      private void intervalMoved(Interval interval, State from, State to) {
          // intervalMoved() is called whenever an interval moves from one interval list to another.
          // In the implementation of this method it is prohibited to move the interval to any list.
          if (Debug.isLogEnabled()) {
              Debug.log("interval moved from %s to %s: %s", from, to, interval.logString(allocator));
+         DebugContext debug = allocator.getDebug();
+         if (debug.isLogEnabled()) {
+             debug.log("interval moved from %s to %s: %s", from, to, interval.logString(allocator));
          }
      }
  
      /**
       * Move {@linkplain #unhandledLists unhandled} stack intervals to