[llvm] [AArch64][GISel] Translate legal SVE formal arguments and select COPY for SVE (PR #95236)

[via llvm-commits]

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@@ -0,0 +1,389 @@
+; NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 5
+; RUN: llc -mtriple=aarch64-linux-gnu -O0 -mattr=+sve -global-isel -global-isel-abort=1 -aarch64-enable-gisel-sve=1 \
+; RUN:     -stop-after=irtranslator -verify-machineinstrs %s -o - | FileCheck %s
+
+;; vscale x 128-bit
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Him188 wrote:

Isn't [sve-formal-argument.ll](https://github.com/llvm/llvm-project/pull/95236/files#diff-e38af48ccacbc706e49c732d40e671d7b38f6296861cb2947728bd95e8b56d8c) doing this?

https://github.com/llvm/llvm-project/pull/95236