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-rw-r--r--llvm/lib/CodeGen/GlobalISel/GISelValueTracking.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/GlobalISel/GISelValueTracking.cpp b/llvm/lib/CodeGen/GlobalISel/GISelValueTracking.cpp
index 04d9309..d6f23b6 100644
--- a/llvm/lib/CodeGen/GlobalISel/GISelValueTracking.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/GISelValueTracking.cpp
@@ -602,6 +602,8 @@ void GISelValueTracking::computeKnownBitsImpl(Register R, KnownBits &Known,
Depth + 1);
computeKnownBitsImpl(MI.getOperand(3).getReg(), WidthKnown, DemandedElts,
Depth + 1);
+ OffsetKnown = OffsetKnown.sext(BitWidth);
+ WidthKnown = WidthKnown.sext(BitWidth);
Known = extractBits(BitWidth, SrcOpKnown, OffsetKnown, WidthKnown);
// Sign extend the extracted value using shift left and arithmetic shift
// right.