[PATCH] D138791: [AArch64][SME]: Generate streaming-compatible code for ld2-alloca.

[Sander de Smalen via Phabricator via llvm-commits]

sdesmalen added inline comments.


================
Comment at: llvm/lib/Target/AArch64/AArch64ISelLowering.cpp:13970
+  if (Subtarget->forceStreamingCompatibleSVE() ||
+      (Subtarget->useSVEForFixedLengthVectors() &&
+       (VecSize % Subtarget->getMinSVEVectorSizeInBits() == 0 ||
----------------
Sorry, I just realise you'll also need to add a check that we can generate a predicate pattern for the number of elements (e.g. vl2, vl3, ...), because e.g. a <9 x i8> has no corresponding predicate pattern. You can use `Optional<unsigned> getSVEPredPatternFromNumElements()` for this (defined in Utils/AArch64BaseInfo.h).

Can you also add a test for <9 x i8> ?


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https://reviews.llvm.org/D138791