1 files changed, 3 insertions, 3 deletions
diff --git a/llvm/lib/Analysis/ValueTracking.cpp b/llvm/lib/Analysis/ValueTracking.cpp
index af55c96..3cd90e8 100644
--- a/llvm/lib/Analysis/ValueTracking.cpp
+++ b/llvm/lib/Analysis/ValueTracking.cpp
@@ -549,10 +549,10 @@ void llvm::computeKnownBitsFromRangeMetadata(const MDNode &Ranges,
     // The first CommonPrefixBits of all values in Range are equal.
     unsigned CommonPrefixBits =
         (Range.getUnsignedMax() ^ Range.getUnsignedMin()).countLeadingZeros();
-
     APInt Mask = APInt::getHighBitsSet(BitWidth, CommonPrefixBits);
-    Known.One &= Range.getUnsignedMax() & Mask;
-    Known.Zero &= ~Range.getUnsignedMax() & Mask;
+    APInt UnsignedMax = Range.getUnsignedMax().zextOrTrunc(BitWidth);
+    Known.One &= UnsignedMax & Mask;
+    Known.Zero &= ~UnsignedMax & Mask;
   }
 }