From: Duncan Sands <baldrick@free.fr>
Date: Mon, 20 Jun 2011 09:26:23 +0000 (+0000)
Subject: Disable the logic added by rafael in commit 133415 to see if it brings the
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=2ee2d932328522267d845402e8b31d1d06f8bdd1;p=oota-llvm.git

Disable the logic added by rafael in commit 133415 to see if it brings the
dragonegg buildbots back to life.  Original commit message:
Teach early dup how to duplicate basic blocks with one successor and only phi instructions
into more complex blocks.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133430 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/TailDuplication.cpp b/lib/CodeGen/TailDuplication.cpp
index f93840103e0..89160709f42 100644
--- a/lib/CodeGen/TailDuplication.cpp
+++ b/lib/CodeGen/TailDuplication.cpp
@@ -707,7 +707,7 @@ TailDuplicatePass::TailDuplicate(MachineBasicBlock *TailBB, MachineFunction &MF,
   DenseSet<unsigned> UsedByPhi;
   getRegsUsedByPHIs(*TailBB, &UsedByPhi);
 
-  if (isSimpleBB(TailBB))
+  if (0 && isSimpleBB(TailBB)) // Disabled to see if doing so fixes buildbots.
     return duplicateSimpleBB(TailBB, TDBBs, UsedByPhi, Copies);
 
   // Iterate through all the unique predecessors and tail-duplicate this