[llvm] [CycleInfo] skip unreachable predecessors (PR #101316)

[Sameer Sahasrabuddhe via llvm-commits]

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@@ -0,0 +1,23 @@
+; RUN: opt < %s -disable-output -passes='print<cycles>' 2>&1 | FileCheck %s
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ssahasra wrote:

The CHECK is an exact one. The incorrect entry will show up in the `entries()` parentheses below and the CHECK will fail.

https://github.com/llvm/llvm-project/pull/101316