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

[David Green via llvm-commits]

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@@ -0,0 +1,20 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc < %s -mtriple=aarch64-none-linux-gnu | FileCheck %s
+
+define i32 @test_add_zext(<4 x i16> %a, <4 x i16> %b) local_unnamed_addr #0 {
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davemgreen wrote:

It is probably worth adding other type sizes if they are not already tested elsewhere.

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