From 4e8061cbdaabe092ba7f1b4e7e8155dafbac4a90 Mon Sep 17 00:00:00 2001
From: Devang Patel <dpatel@apple.com>
Date: Tue, 14 Aug 2007 23:53:57 +0000
Subject: Avoid nested loops at the moment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41090 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/Scalar/LoopIndexSplit.cpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'lib/Transforms/Scalar/LoopIndexSplit.cpp')

diff --git a/lib/Transforms/Scalar/LoopIndexSplit.cpp b/lib/Transforms/Scalar/LoopIndexSplit.cpp
index 1398692afd..dfe33ffe16 100644
--- a/lib/Transforms/Scalar/LoopIndexSplit.cpp
+++ b/lib/Transforms/Scalar/LoopIndexSplit.cpp
@@ -154,6 +154,10 @@ bool LoopIndexSplit::runOnLoop(Loop *IncomingLoop, LPPassManager &LPM_Ref) {
   L = IncomingLoop;
   LPM = &LPM_Ref;
 
+  // FIXME - Nested loops makes dominator info updates tricky. 
+  if (!L->getSubLoops().empty())
+    return false;
+
   SE = &getAnalysis<ScalarEvolution>();
   DT = &getAnalysis<DominatorTree>();
   LI = &getAnalysis<LoopInfo>();
-- 
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