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-rw-r--r--lib/Analysis/ScalarEvolution.cpp5
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp
index 2601277cd8..41173c9ce1 100644
--- a/lib/Analysis/ScalarEvolution.cpp
+++ b/lib/Analysis/ScalarEvolution.cpp
@@ -347,8 +347,9 @@ replaceSymbolicValuesWithConcrete(const SCEVHandle &Sym,
bool SCEVAddRecExpr::isLoopInvariant(const Loop *QueryLoop) const {
// This recurrence is invariant w.r.t to QueryLoop iff QueryLoop doesn't
- // contain L.
- return !QueryLoop->contains(L->getHeader());
+ // contain L and if the start is invariant.
+ return !QueryLoop->contains(L->getHeader()) &&
+ getOperand(0)->isLoopInvariant(QueryLoop);
}