; LLVM IR from viveakrt/Competitive-programing :: SPOJ/treap.ll (Z3kthP4nodei)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%struct.node = type { i32, i32, i32, i32, i32, i32, ptr, ptr }

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z2szP4node(ptr noundef) #0

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z3kthP4nodei(ptr noundef %0, i32 noundef %1) #1 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  %6 = load i32, ptr %5, align 4, !tbaa !9
  %7 = load ptr, ptr %4, align 8, !tbaa !5
  %8 = getelementptr inbounds %struct.node, ptr %7, i32 0, i32 6
  %9 = load ptr, ptr %8, align 8, !tbaa !11
  %10 = call noundef i32 @_Z2szP4node(ptr noundef %9)
  %11 = add nsw i32 %10, 1
  %12 = icmp eq i32 %6, %11
  br i1 %12, label %13, label %17

13:                                               ; preds = %2
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.node, ptr %14, i32 0, i32 1
  %16 = load i32, ptr %15, align 4, !tbaa !13
  store i32 %16, ptr %3, align 4
  br label %43

17:                                               ; preds = %2
  %18 = load i32, ptr %5, align 4, !tbaa !9
  %19 = load ptr, ptr %4, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.node, ptr %19, i32 0, i32 6
  %21 = load ptr, ptr %20, align 8, !tbaa !11
  %22 = call noundef i32 @_Z2szP4node(ptr noundef %21)
  %23 = add nsw i32 %22, 1
  %24 = icmp sgt i32 %18, %23
  br i1 %24, label %25, label %37

25:                                               ; preds = %17
  %26 = load ptr, ptr %4, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.node, ptr %26, i32 0, i32 7
  %28 = load ptr, ptr %27, align 8, !tbaa !14
  %29 = load i32, ptr %5, align 4, !tbaa !9
  %30 = load ptr, ptr %4, align 8, !tbaa !5
  %31 = getelementptr inbounds %struct.node, ptr %30, i32 0, i32 6
  %32 = load ptr, ptr %31, align 8, !tbaa !11
  %33 = call noundef i32 @_Z2szP4node(ptr noundef %32)
  %34 = sub nsw i32 %29, %33
  %35 = sub nsw i32 %34, 1
  %36 = call noundef i32 @_Z3kthP4nodei(ptr noundef %28, i32 noundef %35)
  store i32 %36, ptr %3, align 4
  br label %43

37:                                               ; preds = %17
  %38 = load ptr, ptr %4, align 8, !tbaa !5
  %39 = getelementptr inbounds %struct.node, ptr %38, i32 0, i32 6
  %40 = load ptr, ptr %39, align 8, !tbaa !11
  %41 = load i32, ptr %5, align 4, !tbaa !9
  %42 = call noundef i32 @_Z3kthP4nodei(ptr noundef %40, i32 noundef %41)
  store i32 %42, ptr %3, align 4
  br label %43

43:                                               ; preds = %37, %25, %13
  %44 = load i32, ptr %3, align 4
  ret i32 %44
}

attributes #0 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !6, i64 24}
!12 = !{!"_ZTS4node", !10, i64 0, !10, i64 4, !10, i64 8, !10, i64 12, !10, i64 16, !10, i64 20, !6, i64 24, !6, i64 32}
!13 = !{!12, !10, i64 4}
!14 = !{!12, !6, i64 32}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z2szP4node(ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z3kthP4nodei(ptr nocapture noundef readonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = getelementptr inbounds i8, ptr %0, i64 24
  %4 = load ptr, ptr %3, align 8, !tbaa !5
  %5 = tail call noundef i32 @_Z2szP4node(ptr noundef %4)
  %6 = add nsw i32 %5, 1
  %7 = icmp eq i32 %6, %1
  br i1 %7, label %tailrecurse.outer._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2, %tailrecurse.outer
  %8 = phi ptr [ %26, %tailrecurse.outer ], [ %3, %2 ]
  %.tr11.ph17 = phi i32 [ %25, %tailrecurse.outer ], [ %1, %2 ]
  %.tr.ph16 = phi ptr [ %21, %tailrecurse.outer ], [ %0, %2 ]
  %9 = load ptr, ptr %8, align 8, !tbaa !5
  %10 = tail call noundef i32 @_Z2szP4node(ptr noundef %9)
  %11 = add nsw i32 %10, 1
  %12 = icmp slt i32 %11, %.tr11.ph17
  br i1 %12, label %tailrecurse.outer, label %tailrecurse

tailrecurse.outer._crit_edge:                     ; preds = %tailrecurse.outer, %tailrecurse, %2
  %.tr.lcssa = phi ptr [ %0, %2 ], [ %32, %tailrecurse ], [ %21, %tailrecurse.outer ]
  %13 = getelementptr inbounds i8, ptr %.tr.lcssa, i64 4
  %14 = load i32, ptr %13, align 4, !tbaa !11
  ret i32 %14

15:                                               ; preds = %tailrecurse
  %16 = load ptr, ptr %33, align 8, !tbaa !5
  %17 = tail call noundef i32 @_Z2szP4node(ptr noundef %16)
  %18 = add nsw i32 %17, 1
  %19 = icmp slt i32 %18, %.tr11.ph17
  br i1 %19, label %tailrecurse.outer, label %tailrecurse

tailrecurse.outer:                                ; preds = %15, %.lr.ph
  %.lcssa = phi ptr [ %8, %.lr.ph ], [ %33, %15 ]
  %.tr14.lcssa = phi ptr [ %.tr.ph16, %.lr.ph ], [ %32, %15 ]
  %20 = getelementptr inbounds i8, ptr %.tr14.lcssa, i64 32
  %21 = load ptr, ptr %20, align 8, !tbaa !12
  %22 = load ptr, ptr %.lcssa, align 8, !tbaa !5
  %23 = tail call noundef i32 @_Z2szP4node(ptr noundef %22)
  %24 = xor i32 %23, -1
  %25 = add i32 %.tr11.ph17, %24
  %26 = getelementptr inbounds i8, ptr %21, i64 24
  %27 = load ptr, ptr %26, align 8, !tbaa !5
  %28 = tail call noundef i32 @_Z2szP4node(ptr noundef %27)
  %29 = add nsw i32 %28, 1
  %30 = icmp eq i32 %29, %25
  br i1 %30, label %tailrecurse.outer._crit_edge, label %.lr.ph

tailrecurse:                                      ; preds = %.lr.ph, %15
  %31 = phi ptr [ %33, %15 ], [ %8, %.lr.ph ]
  %32 = load ptr, ptr %31, align 8, !tbaa !5
  %33 = getelementptr inbounds i8, ptr %32, i64 24
  %34 = load ptr, ptr %33, align 8, !tbaa !5
  %35 = tail call noundef i32 @_Z2szP4node(ptr noundef %34)
  %36 = add nsw i32 %35, 1
  %37 = icmp eq i32 %36, %.tr11.ph17
  br i1 %37, label %tailrecurse.outer._crit_edge, label %15
}

attributes #0 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !10, i64 24}
!6 = !{!"_ZTS4node", !7, i64 0, !7, i64 4, !7, i64 8, !7, i64 12, !7, i64 16, !7, i64 20, !10, i64 24, !10, i64 32}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !7, i64 4}
!12 = !{!6, !10, i64 32}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass