X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FAnalysis%2FScalarEvolutionExpander.cpp;h=968c619a48ddfae989f5921b06827f5fa7f38eea;hb=2b861c3a24fa299d6b8a2d5097114c1000354bee;hp=8c75b0db70f29f4ea11e2a34c5a22291cf1b1aee;hpb=b7f1fb47e67af99d65dd1afc55910c8f19b5ec8e;p=oota-llvm.git

diff --git a/lib/Analysis/ScalarEvolutionExpander.cpp b/lib/Analysis/ScalarEvolutionExpander.cpp
index 8c75b0db70f..968c619a48d 100644
--- a/lib/Analysis/ScalarEvolutionExpander.cpp
+++ b/lib/Analysis/ScalarEvolutionExpander.cpp
@@ -1443,8 +1443,12 @@ Value *SCEVExpander::visitAddRecExpr(const SCEVAddRecExpr *S) {
     Constant *One = ConstantInt::get(Ty, 1);
     for (pred_iterator HPI = HPB; HPI != HPE; ++HPI) {
       BasicBlock *HP = *HPI;
-      if (!PredSeen.insert(HP))
+      if (!PredSeen.insert(HP)) {
+        // There must be an incoming value for each predecessor, even the
+        // duplicates!
+        CanonicalIV->addIncoming(CanonicalIV->getIncomingValueForBlock(HP), HP);
         continue;
+      }
 
       if (L->contains(HP)) {
         // Insert a unit add instruction right before the terminator