commit 35c9e51219942b7a5d0f95fd0b2abc7f79f58ba0
author Andrew Trick <atrick@apple.com> Fri Oct 07 06:33:09 2011 +0000
committer Andrew Trick <atrick@apple.com> Fri Oct 07 06:33:09 2011 +0000
tree bedf79797262acb0845cb614ae10a9fe3da43307
parent 4ef158335ba92e217786aca5a7d8acb2b5e09766

PostRA scheduler fix. Clear stale loop dependencies.

Fixes <rdar://problem/10235725>

llvm-svn: 141357

llvm/lib/CodeGen/ScheduleDAGInstrs.cpp

diff --git a/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp b/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp
index c5647fb..34b8ab0 100644
--- a/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp
+++ b/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp
@@ -134,6 +134,7 @@
 }
 
 void ScheduleDAGInstrs::StartBlock(MachineBasicBlock *BB) {
+  LoopRegs.Deps.clear();
   if (MachineLoop *ML = MLI.getLoopFor(BB))
     if (BB == ML->getLoopLatch()) {
       MachineBasicBlock *Header = ML->getHeader();