[PATCH] D150482: [AArch64] Don't use tbl lowering if ZExt can be folded into user.

Eli Friedman via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Thu Jun 1 11:09:17 PDT 2023


efriedma accepted this revision.
efriedma added a comment.
This revision is now accepted and ready to land.

LGTM



================
Comment at: llvm/lib/Target/AArch64/AArch64ISelLowering.cpp:14461
   auto DstWidth = cast<IntegerType>(DstTy->getElementType())->getBitWidth();
+  if (DstWidth % 8 != 0 || DstWidth <= 16 || DstWidth >= 64)
+    return false;
----------------
Maybe just explicitly check "DstWidth != 16 && DstWidth != 32"?


Repository:
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https://reviews.llvm.org/D150482



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