[llvm] [IA] Support deinterleave intrinsics w/ fewer than N extracts (PR #147572)

[Philip Reames via llvm-commits]

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@@ -17456,14 +17456,16 @@ bool AArch64TargetLowering::lowerInterleavedStore(StoreInst *SI,
 }
 
 bool AArch64TargetLowering::lowerDeinterleaveIntrinsicToLoad(
-    LoadInst *LI, ArrayRef<Value *> DeinterleavedValues) const {
-  unsigned Factor = DeinterleavedValues.size();
+    LoadInst *LI, ArrayRef<Value *> DeinterleavedValues,
+    unsigned Factor) const {
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preames wrote:

Bouncing between a couple meetings today, will take another look and reply in a few hours.  Maybe I confused myself.

https://github.com/llvm/llvm-project/pull/147572