diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -7454,8 +7454,15 @@
       Type *Ty = CDS->getType();
       Mask = APInt::getZero(Ty->getPrimitiveSizeInBits());
       unsigned EltBits = CDS->getElementType()->getPrimitiveSizeInBits();
-      for (unsigned I = 0, E = CDS->getNumElements(); I != E; ++I)
-        Mask.insertBits(CDS->getElementAsAPInt(I), I * EltBits);
+      if (isa<IntegerType>(CDS->getElementType())) {
+        for (unsigned I = 0, E = CDS->getNumElements(); I != E; ++I)
+          Mask.insertBits(CDS->getElementAsAPInt(I), I * EltBits);
+      } else {
+        // Assume floating points
+        for (unsigned I = 0, E = CDS->getNumElements(); I != E; ++I)
+          Mask.insertBits(CDS->getElementAsAPFloat(I).bitcastToAPInt(),
+                          I * EltBits);
+      }
       return true;
     }
     return false;