[llvm] [ARM][Thumb2] Mark BTI-clearing instructions as scheduling region boundaries (PR #79173)

[Victor Campos via llvm-commits]

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@@ -0,0 +1,166 @@
+# RUN: llc -o - -run-pass=machine-scheduler -misched=shuffle %s | FileCheck %s
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vhscampos wrote:

The script generates many more check lines than necessary, so I prefer to keep the testcase handmade.

https://github.com/llvm/llvm-project/pull/79173