[llvm] [X86] Fix lower1BitShuffle blend-with-zero shuffles to AND mask (PR #180472)

[Simon Pilgrim via llvm-commits]

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@@ -250,3 +250,18 @@ define i16 @PR90356(<16 x i1> %a) {
   %2 = bitcast <16 x i1> %1 to i16
   ret i16 %2
 }
+
+define <4 x i1> @ISSUE180426(<4 x i1> %0) {
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RKSimon wrote:

Use PR (Problem Report) tag:
```suggestion
define <4 x i1> @PR180426(<4 x i1> %0) {
```

https://github.com/llvm/llvm-project/pull/180472