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-rw-r--r--llvm/lib/Transforms/Utils/SimplifyCFG.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Utils/SimplifyCFG.cpp b/llvm/lib/Transforms/Utils/SimplifyCFG.cpp
index 635117ff0b9..a651eacd1bb 100644
--- a/llvm/lib/Transforms/Utils/SimplifyCFG.cpp
+++ b/llvm/lib/Transforms/Utils/SimplifyCFG.cpp
@@ -3627,7 +3627,7 @@ Value *SwitchLookupTable::BuildLookup(Value *Index, uint64_t TableSize,
case ArrayKind: {
// Make sure the table index will not overflow when treated as signed.
if (IntegerType *IT = dyn_cast<IntegerType>(Index->getType()))
- if (TableSize > (1 << (IT->getBitWidth() - 1)))
+ if (TableSize > (1ULL << (IT->getBitWidth() - 1)))
Index = Builder.CreateZExt(Index,
IntegerType::get(IT->getContext(),
IT->getBitWidth() + 1),
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