[llvm] [AArch64] Extend usage of `XAR` instruction for fixed-length operations (PR #139460)

[David Green via llvm-commits]

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@@ -1,6 +1,7 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 4
 ; RUN: llc -mtriple=aarch64 -mattr=+sha3 < %s | FileCheck --check-prefix=SHA3 %s
 ; RUN: llc -mtriple=aarch64 -mattr=-sha3 < %s | FileCheck --check-prefix=NOSHA3 %s
+; RUN: llc -mtriple=aarch64 -mattr=+sve2,sve2-sha3,+sha3 < %s | FileCheck --check-prefix=SVE2SHA3 %s
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davemgreen wrote:

XAR only requires sve2, not the other cyrpto features like the neon variant.

https://github.com/llvm/llvm-project/pull/139460