1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/Target/X86/X86ShuffleDecodeConstantPool.cpp b/llvm/lib/Target/X86/X86ShuffleDecodeConstantPool.cpp
index 29498160842..11115524c81 100644
--- a/llvm/lib/Target/X86/X86ShuffleDecodeConstantPool.cpp
+++ b/llvm/lib/Target/X86/X86ShuffleDecodeConstantPool.cpp
@@ -82,7 +82,7 @@ static bool extractConstantMask(const Constant *C, unsigned MaskEltSizeInBits,
 
     // Only treat the element as UNDEF if all bits are UNDEF, otherwise
     // treat it as zero.
-    if (EltUndef.countPopulation() == MaskEltSizeInBits) {
+    if (EltUndef.isAllOnesValue()) {
       UndefElts[i] = true;
       RawMask[i] = 0;
       continue;