Use llvm.vector.(de)interleaveN in SVE2 #8887
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Use llvm.vector.(de)interleaveN intrinsic to lower vector shuffle operation if it matches deinterleave or interleave pattern. Note that the supported factor N is limited by llvm-ir spec and also target backend.
Take vscale into accout in slicing small vectors.
alexreinking
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Dec 6, 2025
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nit: please use the concat_strings helper since this gives us an easy thing to search for when eventually modernizing to C++20 and have std::format available.
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Just want to follow up, I suppose the bot job failures are not related to this commit. Let me know if you’d like me to update anything before it can be merged. I have some other items depending on this one. Thanks! |
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@stevesuzuki-arm -- thanks for the nudge. Sorry for the delay. |
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Use llvm.vector.(de)interleaveN intrinsic to lower vector shuffle operation if it matches deinterleave or interleave pattern. Note that the supported factor N is limited by llvm-ir spec and also target backend.