From 4fe0fe8b493437e91f8510b81462ff39f0d889ca Mon Sep 17 00:00:00 2001
From: Devang Patel <dpatel@apple.com>
Date: Thu, 18 Sep 2008 23:45:14 +0000
Subject: splitLoop does not handle split condition EQ. Fixes PR 2805

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56321 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/Scalar/LoopIndexSplit.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

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

diff --git a/lib/Transforms/Scalar/LoopIndexSplit.cpp b/lib/Transforms/Scalar/LoopIndexSplit.cpp
index 8cafe74..085223c 100644
--- a/lib/Transforms/Scalar/LoopIndexSplit.cpp
+++ b/lib/Transforms/Scalar/LoopIndexSplit.cpp
@@ -1430,6 +1430,12 @@ bool LoopIndexSplit::splitLoop(SplitInfo &SD) {
   if (!safeSplitCondition(SD))
     return false;
 
+  // If split condition EQ is not handled.
+  if (ICmpInst *ICMP = dyn_cast<ICmpInst>(SD.SplitCondition)) {
+    if (ICMP->getPredicate() == ICmpInst::ICMP_EQ)
+      return false;
+  }
+  
   BasicBlock *SplitCondBlock = SD.SplitCondition->getParent();
   
   // Unable to handle triangle loops at the moment.
-- 
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