[llvm-branch-commits] [llvm] [LV] Bundle partial reductions inside VPExpressionRecipe (PR #147302)

[Sam Tebbs via llvm-branch-commits]

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@@ -2955,12 +2966,14 @@ tryToMatchAndCreateMulAccumulateReduction(VPReductionRecipe *Red,
 
     // Match reduce.add(mul(ext, ext)).
     if (RecipeA && RecipeB &&
-        (RecipeA->getOpcode() == RecipeB->getOpcode() || A == B) &&
+        (RecipeA->getOpcode() == RecipeB->getOpcode() || A == B ||
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SamTebbs33 wrote:

I don't think there is such a case, since if A and B are equal but the opcodes are different then they'd have to be defined by different recipes, in which case they can't be equal since they're different objects. The check was already here so I thought I'd leave it but I can try removing it and seeing if it fails any tests.

https://github.com/llvm/llvm-project/pull/147302