[llvm] [VPlan] Add VPInstruction to unpack vector values to scalars. (PR #155670)

[Florian Hahn via llvm-commits]

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@@ -84,6 +84,8 @@ inline bool isSingleScalar(const VPValue *VPV) {
     return VPI->isSingleScalar() || VPI->isVectorToScalar() ||
            (PreservesUniformity(VPI->getOpcode()) &&
             all_of(VPI->operands(), isSingleScalar));
+  if (auto *Reduce = dyn_cast<VPReductionRecipe>(VPV))
+    return true;
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fhahn wrote:

Stripped again for now, thanks

https://github.com/llvm/llvm-project/pull/155670