[llvm] r189995 - Remove dead subtree limit code.

[Andrew Trick]

Author: atrick
Date: Wed Sep  4 16:00:20 2013
New Revision: 189995

URL: http://llvm.org/viewvc/llvm-project?rev=189995&view=rev
Log:
Remove dead subtree limit code.

Modified:
    llvm/trunk/lib/CodeGen/MachineScheduler.cpp

Modified: llvm/trunk/lib/CodeGen/MachineScheduler.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/MachineScheduler.cpp?rev=189995&r1=189994&r2=189995&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/MachineScheduler.cpp (original)
+++ llvm/trunk/lib/CodeGen/MachineScheduler.cpp Wed Sep  4 16:00:20 2013
@@ -2818,15 +2818,6 @@ struct ILPOrder {
 
 /// \brief Schedule based on the ILP metric.
 class ILPScheduler : public MachineSchedStrategy {
-  /// In case all subtrees are eventually connected to a common root through
-  /// data dependence (e.g. reduction), place an upper limit on their size.
-  ///
-  /// FIXME: A subtree limit is generally good, but in the situation commented
-  /// above, where multiple similar subtrees feed a common root, we should
-  /// only split at a point where the resulting subtrees will be balanced.
-  /// (a motivating test case must be found).
-  static const unsigned SubtreeLimit = 16;
-
   ScheduleDAGMI *DAG;
   ILPOrder Cmp;