[llvm] [AArch64] Enable masked load/store for Streaming-SVE with -march=armv8-a+sme (PR #163133)

[David Green via llvm-commits]

================
@@ -0,0 +1,141 @@
+; RUN: opt < %s -passes=loop-vectorize -S | FileCheck %s
----------------
davemgreen wrote:

Can you move this into the AArch64 subfolder.
And run update_test_checks.py on it. It looks like it is already generated.

https://github.com/llvm/llvm-project/pull/163133