Re-re-enable compact unwind after fixing a failure in SingleSource/Benchmarks/Shootout-C++/except.cpp and friends. It was encoding the stored registers in the wrong order.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146617 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCDwarf.cpp b/lib/MC/MCDwarf.cpp
index 09a64a5..46ab65f 100644
--- a/lib/MC/MCDwarf.cpp
+++ b/lib/MC/MCDwarf.cpp
@@ -1348,8 +1348,7 @@
   ArrayRef<MCDwarfFrameInfo> FrameArray = Streamer.getFrameInfos();
 
   // Emit the compact unwind info if available.
-  // FIXME: Re-enable.
-  if (false && IsEH && MOFI->getCompactUnwindSection())
+  if (IsEH && MOFI->getCompactUnwindSection())
     for (unsigned i = 0, n = Streamer.getNumFrameInfos(); i < n; ++i) {
       const MCDwarfFrameInfo &Frame = Streamer.getFrameInfo(i);
       if (Frame.CompactUnwindEncoding)