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-rw-r--r--contrib/llvm/lib/Transforms/Utils/LoopUnrollRuntime.cpp4
1 files changed, 3 insertions, 1 deletions
diff --git a/contrib/llvm/lib/Transforms/Utils/LoopUnrollRuntime.cpp b/contrib/llvm/lib/Transforms/Utils/LoopUnrollRuntime.cpp
index 3aa6bef..67e17f4 100644
--- a/contrib/llvm/lib/Transforms/Utils/LoopUnrollRuntime.cpp
+++ b/contrib/llvm/lib/Transforms/Utils/LoopUnrollRuntime.cpp
@@ -131,7 +131,7 @@ static void ConnectProlog(Loop *L, Value *TripCount, unsigned Count,
/// There are two value maps that are defined and used. VMap is
/// for the values in the current loop instance. LVMap contains
/// the values from the last loop instance. We need the LVMap values
-/// to update the inital values for the current loop instance.
+/// to update the initial values for the current loop instance.
///
static void CloneLoopBlocks(Loop *L,
bool FirstCopy,
@@ -237,6 +237,8 @@ bool llvm::UnrollRuntimeLoopProlog(Loop *L, unsigned Count, LoopInfo *LI,
// Use Scalar Evolution to compute the trip count. This allows more
// loops to be unrolled than relying on induction var simplification
+ if (!LPM)
+ return false;
ScalarEvolution *SE = LPM->getAnalysisIfAvailable<ScalarEvolution>();
if (SE == 0)
return false;
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