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-rw-r--r--lib/Support/APInt.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/Support/APInt.cpp b/lib/Support/APInt.cpp
index 2e537d66da..c5abf4bf16 100644
--- a/lib/Support/APInt.cpp
+++ b/lib/Support/APInt.cpp
@@ -2212,7 +2212,8 @@ APInt::tcExtract(integerPart *dst, unsigned int dstCount, const integerPart *src
dst[dstParts - 1] |= ((src[firstSrcPart + dstParts] & mask)
<< n % integerPartWidth);
} else if (n > srcBits) {
- dst[dstParts - 1] &= lowBitMask (srcBits % integerPartWidth);
+ if (srcBits % integerPartWidth)
+ dst[dstParts - 1] &= lowBitMask (srcBits % integerPartWidth);
}
/* Clear high parts. */