From ed5bc470aab7097c30e5f881158112f7830472f3 Mon Sep 17 00:00:00 2001
From: Duncan Sands <baldrick@free.fr>
Date: Fri, 1 Jul 2011 12:01:00 +0000
Subject: [PATCH] Disable commit 134216 ("Add 134199 back, but disable the
 optimization when the second copy is a kill") to see if it fixes the i386
 dragonegg buildbot, which is timing out because gcc built with dragonegg is
 going into an infinite loop.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134237 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/RegisterCoalescer.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/CodeGen/RegisterCoalescer.cpp b/lib/CodeGen/RegisterCoalescer.cpp
index 3b982d67e7b..d5025b9e636 100644
--- a/lib/CodeGen/RegisterCoalescer.cpp
+++ b/lib/CodeGen/RegisterCoalescer.cpp
@@ -1203,6 +1203,7 @@ static bool RegistersDefinedFromSameValue(LiveIntervals &li,
                                           VNInfo *VNI,
                                           LiveRange *LR,
                                      SmallVector<MachineInstr*, 8> &DupCopies) {
+  return false; // To see if this fixes the i386 dragonegg buildbot miscompile.
   // FIXME: This is very conservative. For example, we don't handle
   // physical registers.
 
-- 
2.11.0