From b8390b7a25c02f22fd3961394c129d3f88f3f2e3 Mon Sep 17 00:00:00 2001
From: Andrew Trick <atrick@apple.com>
Date: Sat, 5 Mar 2011 08:04:11 +0000
Subject: [PATCH] Missing comment.

llvm-svn: 127068
---
 llvm/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/llvm/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp b/llvm/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
index 035d027afeb2..8821b85a852b 100644
--- a/llvm/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
@@ -2228,6 +2228,8 @@ bool ilp_ls_rr_sort::isReady(SUnit *SU, unsigned CurCycle) const {
   return true;
 }
 
+// list-ilp is currently an experimental scheduler that allows various
+// heuristics to be enabled prior to the normal register reduction logic.
 bool ilp_ls_rr_sort::operator()(SUnit *left, SUnit *right) const {
   if (left->isCall || right->isCall)
     // No way to compute latency of calls.
-- 
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