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1; RUN: opt < %s -S -passes=loop-unroll -unroll-runtime | FileCheck %s2target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v128:128:128-n32:64"3target triple = "powerpc64le-unknown-linux"4 5define void @test1(i1 %arg) nounwind {6; Ensure that we don't crash when the trip count == -1.7; CHECK-LABEL: @test1(8entry:9 br label %for.cond2.preheader10 11for.cond2.preheader: ; preds = %for.end, %entry12 br i1 false, label %middle.block, label %vector.ph13 14vector.ph: ; preds = %for.cond2.preheader15 br label %vector.body16 17vector.body: ; preds = %vector.body, %vector.ph18 br i1 %arg, label %middle.block.loopexit, label %vector.body19 20middle.block.loopexit: ; preds = %vector.body21 br label %middle.block22 23middle.block: ; preds = %middle.block.loopexit, %for.cond2.preheader24 br i1 true, label %for.end, label %scalar.preheader25 26scalar.preheader: ; preds = %middle.block27 br label %for.body428 29for.body4: ; preds = %for.body4, %scalar.preheader30 %indvars.iv = phi i64 [ 16000, %scalar.preheader ], [ %indvars.iv.next, %for.body4 ]31 %indvars.iv.next = add i64 %indvars.iv, 132 %lftr.wideiv = trunc i64 %indvars.iv.next to i3233 %exitcond = icmp ne i32 %lftr.wideiv, 1600034 br i1 %exitcond, label %for.body4, label %for.end.loopexit35 36for.end.loopexit: ; preds = %for.body437 br label %for.end38 39for.end: ; preds = %for.end.loopexit, %middle.block40 br i1 %arg, label %for.cond2.preheader, label %for.end1541 42for.end15: ; preds = %for.end43 ret void44}45