[llvm] [VPlan] Add VPSingleDefBundleRecipe, replacing extended reduction recipes. (PR #144281)

[via llvm-commits]

================
@@ -3014,12 +2937,13 @@ tryToMatchAndCreateMulAccumulateReduction(VPReductionRecipe *Red,
         match(RecipeB, m_ZExtOrSExt(m_VPValue())) &&
         IsMulAccValidAndClampRange(RecipeA->getOpcode() ==
                                        Instruction::CastOps::ZExt,
-                                   Mul, RecipeA, RecipeB, nullptr))
-      return new VPMulAccumulateReductionRecipe(Red, Mul, RecipeA, RecipeB,
-                                                RecipeA->getResultType());
+                                   Mul, RecipeA, RecipeB, nullptr)) {
+      return new VPSingleDefBundleRecipe(RecipeA, RecipeB, Mul, Red);
+    }
     // Match reduce.add(mul).
-    if (IsMulAccValidAndClampRange(true, Mul, nullptr, nullptr, nullptr))
-      return new VPMulAccumulateReductionRecipe(Red, Mul, RedTy);
+    if (IsMulAccValidAndClampRange(true, Mul, nullptr, nullptr, nullptr)) {
+      return new VPSingleDefBundleRecipe(Mul, Red);
+    }
----------------
ayalz wrote:

```suggestion
    if (IsMulAccValidAndClampRange(true, Mul, nullptr, nullptr, nullptr))
      return new VPSingleDefBundleRecipe(Mul, Red);
```

https://github.com/llvm/llvm-project/pull/144281