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

[Florian Hahn via llvm-commits]

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@@ -1283,8 +1285,6 @@ bool VPInstruction::onlyFirstLaneUsed(const VPValue *Op) const {
     return getNumOperands() > 1;
   case VPInstruction::PtrAdd:
     return Op == getOperand(0) || vputils::onlyFirstLaneUsed(this);
-  case VPInstruction::WidePtrAdd:
-    return Op == getOperand(0);
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fhahn wrote:

The patch exposed an issue here, more details in https://github.com/llvm/llvm-project/pull/155670/files#r2347298616 above

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