[llvm] [VPlan] Simplify (X && Y) || (X && !Y) -> X. (PR #89386)

[via llvm-commits]

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@@ -935,6 +935,22 @@ static void simplifyRecipe(VPRecipeBase &R, VPTypeAnalysis &TypeInfo) {
 #endif
   }
 
+  VPValue *X;
+  VPValue *Y;
+  VPValue *X1;
+  VPValue *Y1;
+  // Simplify (X && Y) || (X1 && !Y1) -> X.
----------------
ayalz wrote:

```suggestion
  // Simplify (X && Y) || (X && !Y) -> X.
```
This now more closely matches the code, where repeated occurrences of X and Y are enumerated.

https://github.com/llvm/llvm-project/pull/89386