[llvm] [ARM] Prefer MUL to MULS on some implementations (PR #112540)

[David Green via llvm-commits]

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@@ -63,5 +63,5 @@ body:             |
 
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davemgreen wrote:

We also like to use update_mir_test_checks.py where we can, but I'm not sure it's very useful here.

https://github.com/llvm/llvm-project/pull/112540