From 351b891cbc06f9e35d0675c132092ff5fb3f3ee2 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Tue, 2 Aug 2005 03:31:14 +0000
Subject: Like the comment says, do not insert cast instructions before phi
 nodes

llvm-svn: 22586
---
 llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'llvm/lib/Transforms')

diff --git a/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
index fcb7ad3dfde..33714a2ad20 100644
--- a/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
+++ b/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
@@ -232,6 +232,10 @@ void LoopStrengthReduce::AnalyzeGetElementPtrUsers(GetElementPtrInst *GEP,
         else
           ++InsertPt;
       }
+      
+      // Do not insert casts into the middle of PHI node blocks.
+      while (isa<PHINode>(InsertPt)) ++InsertPt;
+      
       BP = new CastInst(GEP->getOperand(0), UIntPtrTy,
                         GEP->getOperand(0)->getName(), InsertPt);
     }
-- 
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