[llvm] [InstCombine] Propagate demanded elements through fma/fmuladd (PR #221495)

[Hugo Pompougnac via llvm-commits]

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@@ -1992,6 +1992,18 @@ Value *InstCombinerImpl::SimplifyDemandedVectorElts(Value *V,
       PoisonElts = PoisonElts2 & PoisonElts3;
       break;
     }
+    case Intrinsic::fma:
+    case Intrinsic::fmuladd: {
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qaco wrote:

Ok done, thanks for the advice. As an extra gift it now improves minmax-fold !

https://github.com/llvm/llvm-project/pull/221495