[llvm] [BranchFolder] Prevent nested salvage in empty BB chains with pseudo probes (PR #206092)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,108 @@
+# RUN: llc -o - %s -mtriple=x86_64-- -run-pass=branch-folder | FileCheck %s
+
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arsenm wrote:

test/CodeGen/MIR is for MIR parser tests, this belongs in test/CodeGen/X86

https://github.com/llvm/llvm-project/pull/206092