[llvm] [RegisterCoalescer] Fix issue in the RegisterCoalescer. (PR #96839)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,33 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 5
+# RUN: llc -mtriple x86_64-unknown-unknown -x mir < %s \
+# RUN:   -verify-coalescing -enable-subreg-liveness=true \
+# RUN:   --run-pass=register-coalescer -o - | FileCheck %s
+
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arsenm wrote:

Can you add a comment explaining the test?

https://github.com/llvm/llvm-project/pull/96839