[llvm] [InstCombine] Fold vector.reduce.OP(F(X)) == 0 -> OP(X) == 0 (PR #173069)

[Yingwei Zheng via llvm-commits]

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@@ -2132,6 +2132,44 @@ static void computeKnownBitsFromOperator(const Operator *I,
           Known.One.clearAllBits();
         break;
       }
+      case Intrinsic::vector_reduce_add: {
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dtcxzyw wrote:

Please file a separate patch for computeKnownBits changes.

https://github.com/llvm/llvm-project/pull/173069