[llvm] [LV] Add support for widening loads/stores to a VF multiple (PR #217670)

[Benjamin Maxwell via llvm-commits]

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@@ -672,6 +676,7 @@ unsigned VPInstruction::getNumOperandsForOpcode() const {
   case Instruction::Select:
   case VPInstruction::WideActiveLaneMask:
   case VPInstruction::ReductionStartVector:
+  case VPInstruction::VFMultipleLoad:
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MacDue wrote:

I don't think so, the default is to return `true` (but I guess I can for documentation). 

https://github.com/llvm/llvm-project/pull/217670