forked from OSchip/llvm-project
31 lines
901 B
LLVM
31 lines
901 B
LLVM
; RUN: opt -regions -analyze < %s | FileCheck %s
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; RUN: opt < %s -passes='print<regions>' 2>&1 | FileCheck %s
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; We should not crash if there are some bbs that are not reachable.
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define void @f() {
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entry:
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br label %for.pre
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notintree: ; No predecessors!
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br label %ret
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for.pre: ; preds = %entry
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br label %for
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for: ; preds = %for.inc, %for.pre
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%indvar = phi i64 [ 0, %for.pre ], [ %indvar.next, %for.inc ]
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%exitcond = icmp ne i64 %indvar, 200
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br i1 %exitcond, label %for.inc, label %ret
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for.inc: ; preds = %for
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%indvar.next = add i64 %indvar, 1
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br label %for
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ret: ; preds = %for, %notintree
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ret void
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}
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; CHECK: [0] entry => <Function Return>
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; CHECK: [1] for => ret
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