[llvm] [LegalizeTypes][MSP430] Soften FAKE_USE operand (PR #142714)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,31 @@
+; RUN: llc -stop-after=finalize-isel -filetype=asm -o - < %s | FileCheck %s
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arsenm wrote:

```suggestion
; RUN: llc < %s | FileCheck %s
```
-filetype=asm is the default, so there's essentially no reason to ever use it. There's also no real reason to use a mir test here, and you can run to the end 

https://github.com/llvm/llvm-project/pull/142714