1 files changed, 6 insertions, 4 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 02b20b3..931a10b 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -13783,10 +13783,12 @@ static SDValue lowerV4I32Shuffle(const SDLoc &DL, ArrayRef<int> Mask,
     // so prevents folding a load into this instruction or making a copy.
     const int UnpackLoMask[] = {0, 0, 1, 1};
     const int UnpackHiMask[] = {2, 2, 3, 3};
-    if (isShuffleEquivalent(Mask, {0, 0, 1, 1}, V1, V2))
-      Mask = UnpackLoMask;
-    else if (isShuffleEquivalent(Mask, {2, 2, 3, 3}, V1, V2))
-      Mask = UnpackHiMask;
+    if (!isSingleElementRepeatedMask(Mask)) {
+      if (isShuffleEquivalent(Mask, {0, 0, 1, 1}, V1, V2))
+        Mask = UnpackLoMask;
+      else if (isShuffleEquivalent(Mask, {2, 2, 3, 3}, V1, V2))
+        Mask = UnpackHiMask;
+    }
 
     return DAG.getNode(X86ISD::PSHUFD, DL, MVT::v4i32, V1,
                        getV4X86ShuffleImm8ForMask(Mask, DL, DAG));