diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 073b78b6ae67c..c7a42b15cb0c1 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -14907,8 +14907,7 @@ static SDValue lowerShuffleAsLanePermuteAndSHUFP(const SDLoc &DL, MVT VT,
       continue;
     int LaneBase = i & ~1;
     auto &LaneMask = (i & 1) ? RHSMask : LHSMask;
-    LaneMask[LaneBase + 0] = (M & ~1);
-    LaneMask[LaneBase + 1] = (M & ~1) + 1;
+    LaneMask[LaneBase + (M & 1)] = M;
     SHUFPMask |= (M & 1) << i;
   }