; LLVM IR from abeaumont/competitive-programming :: codeforces/1068 (f)

; 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"

@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [7 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #3
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  store i32 0, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  store i32 0, ptr %4, align 4, !tbaa !5
  br label %8

8:                                                ; preds = %56, %0
  %9 = load i32, ptr %4, align 4, !tbaa !5
  %10 = load i32, ptr %2, align 4, !tbaa !5
  %11 = icmp slt i32 %9, %10
  br i1 %11, label %12, label %15

12:                                               ; preds = %8
  %13 = load i32, ptr %3, align 4, !tbaa !5
  %14 = icmp slt i32 %13, 3
  br label %15

15:                                               ; preds = %12, %8
  %16 = phi i1 [ false, %8 ], [ %14, %12 ]
  br i1 %16, label %18, label %17

17:                                               ; preds = %15
  store i32 2, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  br label %59

18:                                               ; preds = %15
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  store i32 0, ptr %6, align 4, !tbaa !5
  br label %19

19:                                               ; preds = %50, %18
  %20 = load i32, ptr %4, align 4, !tbaa !5
  %21 = load i32, ptr %2, align 4, !tbaa !5
  %22 = icmp slt i32 %20, %21
  br i1 %22, label %23, label %28

23:                                               ; preds = %19
  %24 = load i32, ptr %6, align 4, !tbaa !5
  %25 = load i32, ptr %2, align 4, !tbaa !5
  %26 = sdiv i32 %25, 3
  %27 = icmp sle i32 %24, %26
  br label %28

28:                                               ; preds = %23, %19
  %29 = phi i1 [ false, %19 ], [ %27, %23 ]
  br i1 %29, label %31, label %30

30:                                               ; preds = %28
  store i32 5, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  br label %55

31:                                               ; preds = %28
  %32 = load i32, ptr %3, align 4, !tbaa !5
  %33 = sdiv i32 %32, 3
  %34 = mul nsw i32 %33, 8
  %35 = add nsw i32 %34, 1
  %36 = load i32, ptr %3, align 4, !tbaa !5
  %37 = srem i32 %36, 3
  %38 = icmp eq i32 %37, 1
  %39 = zext i1 %38 to i32
  %40 = mul nsw i32 %39, 3
  %41 = add nsw i32 %35, %40
  %42 = load i32, ptr %6, align 4, !tbaa !5
  %43 = mul nsw i32 %42, 2
  %44 = add nsw i32 %43, 1
  %45 = load i32, ptr %3, align 4, !tbaa !5
  %46 = icmp ne i32 %45, 0
  %47 = zext i1 %46 to i32
  %48 = add nsw i32 %44, %47
  %49 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i32 noundef %41, i32 noundef %48)
  br label %50

50:                                               ; preds = %31
  %51 = load i32, ptr %6, align 4, !tbaa !5
  %52 = add nsw i32 %51, 1
  store i32 %52, ptr %6, align 4, !tbaa !5
  %53 = load i32, ptr %4, align 4, !tbaa !5
  %54 = add nsw i32 %53, 1
  store i32 %54, ptr %4, align 4, !tbaa !5
  br label %19, !llvm.loop !9

55:                                               ; preds = %30
  br label %56

56:                                               ; preds = %55
  %57 = load i32, ptr %3, align 4, !tbaa !5
  %58 = add nsw i32 %57, 1
  store i32 %58, ptr %3, align 4, !tbaa !5
  br label %8, !llvm.loop !11

59:                                               ; preds = %17
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #3
  %60 = load i32, ptr %1, align 4
  ret i32 %60
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

declare i32 @__isoc99_scanf(ptr noundef, ...) #2

declare i32 @printf(ptr noundef, ...) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { mustprogress norecurse 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "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 #3 = { nounwind }

!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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


; 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"

@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [7 x i8], align 1

; Function Attrs: mustprogress nofree norecurse nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #3
  %2 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %3 = load i32, ptr %1, align 4, !tbaa !5
  %4 = icmp sgt i32 %3, 0
  br i1 %4, label %.preheader, label %._crit_edge

.preheader:                                       ; preds = %0, %.critedge
  %5 = phi i32 [ %10, %.critedge ], [ %3, %0 ]
  %.01220 = phi i32 [ %.1.lcssa, %.critedge ], [ 0, %0 ]
  %.01319 = phi i32 [ %11, %.critedge ], [ 0, %0 ]
  %6 = icmp sge i32 %.01220, %5
  %.not15 = icmp slt i32 %5, -2
  %or.cond16 = or i1 %6, %.not15
  br i1 %or.cond16, label %.critedge, label %.lr.ph

.lr.ph:                                           ; preds = %.preheader
  %7 = icmp eq i32 %.01319, 1
  %8 = select i1 %7, i32 4, i32 1
  %.not21 = icmp eq i32 %.01319, 0
  %9 = select i1 %.not21, i32 1, i32 2
  br label %15

._crit_edge:                                      ; preds = %.critedge, %0
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #3
  ret i32 0

.critedge:                                        ; preds = %15, %.preheader
  %10 = phi i32 [ %5, %.preheader ], [ %21, %15 ]
  %.1.lcssa = phi i32 [ %.01220, %.preheader ], [ %20, %15 ]
  %11 = add nuw nsw i32 %.01319, 1
  %12 = icmp slt i32 %.1.lcssa, %10
  %13 = icmp ult i32 %.01319, 2
  %14 = select i1 %12, i1 %13, i1 false
  br i1 %14, label %.preheader, label %._crit_edge, !llvm.loop !9

15:                                               ; preds = %.lr.ph, %15
  %.018 = phi i32 [ 0, %.lr.ph ], [ %19, %15 ]
  %.117 = phi i32 [ %.01220, %.lr.ph ], [ %20, %15 ]
  %16 = shl nuw nsw i32 %.018, 1
  %17 = add nuw nsw i32 %9, %16
  %18 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %8, i32 noundef %17)
  %19 = add nuw nsw i32 %.018, 1
  %20 = add nsw i32 %.117, 1
  %21 = load i32, ptr %1, align 4, !tbaa !5
  %22 = icmp sge i32 %20, %21
  %23 = sdiv i32 %21, 3
  %.not = icmp sge i32 %.018, %23
  %or.cond = or i1 %22, %.not
  br i1 %or.cond, label %.critedge, label %15, !llvm.loop !11
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { mustprogress nofree norecurse 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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nofree nounwind "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 #3 = { nounwind }

!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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass