[llvm] [AArch64] Convert UADDV(add(zext, zext)) into UADDLV(concat). (PR #78301)

[Rin Dobrescu via llvm-commits]

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@@ -1434,37 +1434,21 @@ entry:
 }
 
 define zeroext i8 @add_v16i8_v16i8_acc(<16 x i8> %x, i8 %a) {
-; CHECK-SD-BASE-LABEL: add_v16i8_v16i8_acc:
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Rin18 wrote:

This change here seem unnecessary, but it gets added by the update_llc_test_checks.py. Those checks pass with or without this change, and the only thing changing looks to be the --check-prefix. Using different versions of update_llc_test_checks.py doesn't make a difference either.

https://github.com/llvm/llvm-project/pull/78301