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

@@ -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.