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1; RUN: llc -mtriple=hexagon -mcpu=hexagonv5 -hexagon-hwloop-preheader < %s2; REQUIRES: asserts3 4; Test that the preheader is added to the parent loop, otherwise5; we generate an invalid hardware loop.6 7; Function Attrs: nounwind readonly8define void @test(i16 signext %n) #0 {9entry:10 br i1 undef, label %for.cond4.preheader.preheader.split.us, label %for.end2211 12for.cond4.preheader.preheader.split.us:13 %0 = sext i16 %n to i3214 br label %for.body9.preheader.us15 16for.body9.us:17 %indvars.iv = phi i32 [ %indvars.iv.next.7, %for.body9.us ], [ 0, %for.body9.preheader.us ]18 %indvars.iv.next.7 = add i32 %indvars.iv, 819 %lftr.wideiv.7 = trunc i32 %indvars.iv.next.7 to i1620 %exitcond.7 = icmp slt i16 %lftr.wideiv.7, 021 br i1 %exitcond.7, label %for.body9.us, label %for.body9.us.ur22 23for.body9.preheader.us:24 %i.030.us.pmt = phi i32 [ %inc21.us.pmt, %for.end.loopexit.us ], [ 0, %for.cond4.preheader.preheader.split.us ]25 br i1 undef, label %for.body9.us, label %for.body9.us.ur26 27for.body9.us.ur:28 %exitcond.ur.old = icmp eq i16 undef, %n29 br i1 %exitcond.ur.old, label %for.end.loopexit.us, label %for.body9.us.ur30 31for.end.loopexit.us:32 %inc21.us.pmt = add i32 %i.030.us.pmt, 133 %exitcond33 = icmp eq i32 %inc21.us.pmt, %034 br i1 %exitcond33, label %for.end22, label %for.body9.preheader.us35 36for.end22:37 ret void38}39 40attributes #0 = { nounwind readonly "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" }41