llvm-project

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; RUN: opt -disable-output -debug-pass-manager \
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; RUN:     -passes='no-op-loop' %s 2>&1 \
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; RUN:     | FileCheck %s
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;            @f()
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;           /    \
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;       loop.0   loop.1
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;      /      \        \
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; loop.0.0  loop.0.1  loop.1.0
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;
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; CHECK: Running pass: NoOpLoopPass on loop %loop.0.0 in function f
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; CHECK: Running pass: NoOpLoopPass on loop %loop.0.1 in function f
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; CHECK: Running pass: NoOpLoopPass on loop %loop.0 in function f
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; CHECK: Running pass: NoOpLoopPass on loop %loop.1.0 in function f
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; CHECK: Running pass: NoOpLoopPass on loop %loop.1 in function f
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define void @f() {
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entry:
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  br label %loop.0
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loop.0:
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  br i1 undef, label %loop.0.0, label %loop.1
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loop.0.0:
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  br i1 undef, label %loop.0.0, label %loop.0.1
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loop.0.1:
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  br i1 undef, label %loop.0.1, label %loop.0
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loop.1:
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  br i1 undef, label %loop.1, label %loop.1.bb1
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loop.1.bb1:
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  br i1 undef, label %loop.1, label %loop.1.bb2
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loop.1.bb2:
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  br i1 undef, label %end, label %loop.1.0
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loop.1.0:
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  br i1 undef, label %loop.1.0, label %loop.1
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end:
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  ret void
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}
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