[llvm] [HEXAGON] Fix corner cases for hwloops pass (PR #135439)

[Brian Cain via llvm-commits]

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@@ -0,0 +1,281 @@
+# RUN: llc -run-pass=hwloops %s -o - | FileCheck %s
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androm3da wrote:

Needs `--mtriple=hexagon`.

This causes a CI failure.

https://github.com/llvm/llvm-project/pull/135439