From 1176aa52646fe641a4243a246aa7f960c708a274 Mon Sep 17 00:00:00 2001
From: dim <dim@FreeBSD.org>
Date: Sun, 17 Jul 2011 15:36:56 +0000
Subject: Vendor import of llvm trunk r135360:
 http://llvm.org/svn/llvm-project/llvm/trunk@135360

---
 lib/CodeGen/ScheduleDAGEmit.cpp | 1 +
 1 file changed, 1 insertion(+)

(limited to 'lib/CodeGen/ScheduleDAGEmit.cpp')

diff --git a/lib/CodeGen/ScheduleDAGEmit.cpp b/lib/CodeGen/ScheduleDAGEmit.cpp
index 6b7a8c64..f8b1bc7 100644
--- a/lib/CodeGen/ScheduleDAGEmit.cpp
+++ b/lib/CodeGen/ScheduleDAGEmit.cpp
@@ -45,6 +45,7 @@ void ScheduleDAG::EmitPhysRegCopy(SUnit *SU,
       unsigned Reg = 0;
       for (SUnit::const_succ_iterator II = SU->Succs.begin(),
              EE = SU->Succs.end(); II != EE; ++II) {
+        if (II->isCtrl()) continue;  // ignore chain preds
         if (II->getReg()) {
           Reg = II->getReg();
           break;
-- 
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