[llvm] [MachineVerifier] Report errors from one thread at a time (PR #111605)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,55 @@
+# RUN: not --crash llc -march=x86-64 -run-pass none -o /dev/null %s 2>&1 | FileCheck %s
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arsenm wrote:

This belongs in test/MachineVerifier 

https://github.com/llvm/llvm-project/pull/111605