; LLVM IR from DionysiosB/CodeForces :: 0900-0999 (959C-MahmoudAndEhabAndTheWrongAlgorithm)

; 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 [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [21 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [8 x i8], align 1
@.str.4 = 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 i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #3
  %5 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  %6 = load i64, ptr %2, align 8, !tbaa !5
  %7 = icmp slt i64 %6, 6
  br i1 %7, label %8, label %10

8:                                                ; preds = %0
  %9 = call i32 @puts(ptr noundef @.str.1)
  br label %29

10:                                               ; preds = %0
  %11 = call i32 (ptr, ...) @printf(ptr noundef @.str.2)
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  store i64 7, ptr %3, align 8, !tbaa !5
  br label %12

12:                                               ; preds = %25, %10
  %13 = load i64, ptr %3, align 8, !tbaa !5
  %14 = load i64, ptr %2, align 8, !tbaa !5
  %15 = icmp sle i64 %13, %14
  br i1 %15, label %17, label %16

16:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  br label %28

17:                                               ; preds = %12
  %18 = load i64, ptr %3, align 8, !tbaa !5
  %19 = srem i64 %18, 2
  %20 = icmp ne i64 %19, 0
  %21 = zext i1 %20 to i64
  %22 = select i1 %20, i32 1, i32 2
  %23 = load i64, ptr %3, align 8, !tbaa !5
  %24 = call i32 (ptr, ...) @printf(ptr noundef @.str.3, i32 noundef %22, i64 noundef %23)
  br label %25

25:                                               ; preds = %17
  %26 = load i64, ptr %3, align 8, !tbaa !5
  %27 = add nsw i64 %26, 1
  store i64 %27, ptr %3, align 8, !tbaa !5
  br label %12, !llvm.loop !9

28:                                               ; preds = %16
  br label %29

29:                                               ; preds = %28, %8
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  store i64 2, ptr %4, align 8, !tbaa !5
  br label %30

30:                                               ; preds = %38, %29
  %31 = load i64, ptr %4, align 8, !tbaa !5
  %32 = load i64, ptr %2, align 8, !tbaa !5
  %33 = icmp sle i64 %31, %32
  br i1 %33, label %35, label %34

34:                                               ; preds = %30
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  br label %41

35:                                               ; preds = %30
  %36 = load i64, ptr %4, align 8, !tbaa !5
  %37 = call i32 (ptr, ...) @printf(ptr noundef @.str.4, i64 noundef %36)
  br label %38

38:                                               ; preds = %35
  %39 = load i64, ptr %4, align 8, !tbaa !5
  %40 = add nsw i64 %39, 1
  store i64 %40, ptr %4, align 8, !tbaa !5
  br label %30, !llvm.loop !11

41:                                               ; preds = %34
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  ret i32 0
}

; 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 @puts(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 = !{!"long", !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 [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [21 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [8 x i8], align 1
@.str.4 = 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 i64, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #3
  %2 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %3 = load i64, ptr %1, align 8, !tbaa !5
  %4 = icmp slt i64 %3, 6
  br i1 %4, label %5, label %7

5:                                                ; preds = %0
  %6 = call i32 @puts(ptr noundef nonnull dereferenceable(1) @.str.1)
  %.pre = load i64, ptr %1, align 8, !tbaa !5
  br label %.loopexit

7:                                                ; preds = %0
  %8 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2)
  %9 = load i64, ptr %1, align 8, !tbaa !5
  %.not10 = icmp slt i64 %9, 7
  br i1 %.not10, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %7, %.lr.ph
  %.0711 = phi i64 [ %13, %.lr.ph ], [ 7, %7 ]
  %10 = and i64 %.0711, 1
  %.not8 = icmp eq i64 %10, 0
  %11 = select i1 %.not8, i32 2, i32 1
  %12 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i32 noundef %11, i64 noundef %.0711)
  %13 = add nuw nsw i64 %.0711, 1
  %14 = load i64, ptr %1, align 8, !tbaa !5
  %.not.not = icmp slt i64 %.0711, %14
  br i1 %.not.not, label %.lr.ph, label %.loopexit, !llvm.loop !9

.loopexit:                                        ; preds = %.lr.ph, %7, %5
  %15 = phi i64 [ %9, %7 ], [ %.pre, %5 ], [ %14, %.lr.ph ]
  %.not912 = icmp slt i64 %15, 2
  br i1 %.not912, label %._crit_edge, label %.lr.ph14

._crit_edge:                                      ; preds = %.lr.ph14, %.loopexit
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #3
  ret i32 0

.lr.ph14:                                         ; preds = %.loopexit, %.lr.ph14
  %.013 = phi i64 [ %17, %.lr.ph14 ], [ 2, %.loopexit ]
  %16 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4, i64 noundef %.013)
  %17 = add nuw nsw i64 %.013, 1
  %18 = load i64, ptr %1, align 8, !tbaa !5
  %.not9.not = icmp slt i64 %.013, %18
  br i1 %.not9.not, label %.lr.ph14, label %._crit_edge, !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 @puts(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 = !{!"long", !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: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass