From: Andrew Trick <atrick@apple.com>
Date: Fri, 20 Apr 2012 20:24:33 +0000 (+0000)
Subject: New and improved comment.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=a30444a69c2503ab7dae4c9d696fd3ade33e921d;p=oota-llvm.git

New and improved comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155229 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/ScheduleDAGInstrs.cpp b/lib/CodeGen/ScheduleDAGInstrs.cpp
index 20f8b787597..1b306d6990a 100644
--- a/lib/CodeGen/ScheduleDAGInstrs.cpp
+++ b/lib/CodeGen/ScheduleDAGInstrs.cpp
@@ -135,8 +135,8 @@ void ScheduleDAGInstrs::startBlock(MachineBasicBlock *bb) {
 }
 
 void ScheduleDAGInstrs::finishBlock() {
+  // Subclasses should no longer refer to the old block.
   BB = 0;
-  // Nothing to do.
 }
 
 /// Initialize the map with the number of registers.