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

[Philip Reames via llvm-commits]

================
@@ -188,6 +189,9 @@ LLVM_ABI unsigned getInterleaveIntrinsicFactor(Intrinsic::ID ID);
 /// Returns the corresponding factor of llvm.vector.deinterleaveN intrinsics.
 LLVM_ABI unsigned getDeinterleaveIntrinsicFactor(Intrinsic::ID ID);
 
+/// Given a deinterleaveN intrinsic, return the (narrow) type of each factor.
+LLVM_ABI Type *getDeinterleavedVectorType(IntrinsicInst *DI);
----------------
preames wrote:

You can have this return a VectorType, and remove a couple casts.

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