llvm-project

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; RUN: opt %loadNPMPolly '-passes=print<polly-detect>' -disable-output < %s
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; Verify that the scop detection does not crash on inputs with unreachable
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; blocks. Earlier we crashed when detecting error blocks.
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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; Function Attrs: nounwind uwtable
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define void @foo() {
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entry:
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  br label %while.cond
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while.cond:                                       ; preds = %for.end, %entry
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  br i1 false, label %for.end, label %while.end8
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while.cond1:                                      ; preds = %while.cond4
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  br i1 undef, label %while.body3, label %for.inc
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while.body3:                                      ; preds = %while.cond1
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  br label %while.cond4
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while.cond4:                                      ; preds = %while.cond4, %while.body3
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  br i1 undef, label %while.cond4, label %while.cond1
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for.inc:                                          ; preds = %while.cond1
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  %conv = zext i16 undef to i32
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  br label %for.end
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for.end:                                          ; preds = %for.inc, %while.cond
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  %conv.sink = phi i32 [ %conv, %for.inc ], [ 0, %while.cond ]
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  br label %while.cond
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while.end8:                                       ; preds = %while.cond
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  ret void
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}
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