[llvm] [IA] Relax the requirement of having ExtractValue users on deinterleave intrinsic (PR #148716)

[Philip Reames via llvm-commits]

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@@ -256,17 +257,15 @@ static bool isMultipleOfN(const Value *V, const DataLayout &DL, unsigned N) {
 }
 
 bool RISCVTargetLowering::lowerDeinterleaveIntrinsicToLoad(
-    Instruction *Load, Value *Mask,
-    ArrayRef<Value *> DeinterleaveValues) const {
-  const unsigned Factor = DeinterleaveValues.size();
+    Instruction *Load, Value *Mask, IntrinsicInst *DI) const {
+  const unsigned Factor = getDeinterleaveIntrinsicFactor(DI->getIntrinsicID());
+  assert(Factor && "unexpected deinterleaving factor");
   if (Factor > 8)
     return false;
 
   IRBuilder<> Builder(Load);
 
-  Value *FirstActive =
-      *llvm::find_if(DeinterleaveValues, [](Value *V) { return V != nullptr; });
-  VectorType *ResVTy = cast<VectorType>(FirstActive->getType());
+  VectorType *ResVTy = cast<VectorType>(getDeinterleavedVectorType(DI));
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preames wrote:

e.g. another cast

https://github.com/llvm/llvm-project/pull/148716