[llvm] [AArch64] Fold scalar-to-vector shuffles into DUP/FMOV (PR #166962)

[via llvm-commits]

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@@ -0,0 +1,45 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc -mtriple=aarch64-linux-gnu -o - %s | FileCheck %s
+
+define <2 x i64> @low_vector_splat_v2i64_from_i64(i64 %0){
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CarolineConcatto wrote:

Can you add tests for the floating points as well.
<2 x double>, <4 x float>, <8 x half>, <8 x bfloat16>?

https://github.com/llvm/llvm-project/pull/166962