; LLVM IR from DionysiosB/CodeForces :: 1400-1499 (1436B-PrimeSquare)

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

8:                                                ; preds = %60, %58, %0
  %9 = load i64, ptr %2, align 8, !tbaa !5
  %10 = add nsw i64 %9, -1
  store i64 %10, ptr %2, align 8, !tbaa !5
  %11 = icmp ne i64 %9, 0
  br i1 %11, label %12, label %61

12:                                               ; preds = %8
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  %13 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %3)
  %14 = load i64, ptr %3, align 8, !tbaa !5
  %15 = icmp eq i64 %14, 2
  br i1 %15, label %16, label %18

16:                                               ; preds = %12
  %17 = call i32 @puts(ptr noundef @.str.1)
  store i32 2, ptr %4, align 4
  br label %58, !llvm.loop !9

18:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  store i64 0, ptr %5, align 8, !tbaa !5
  br label %19

19:                                               ; preds = %54, %18
  %20 = load i64, ptr %5, align 8, !tbaa !5
  %21 = load i64, ptr %3, align 8, !tbaa !5
  %22 = icmp slt i64 %20, %21
  br i1 %22, label %24, label %23

23:                                               ; preds = %19
  store i32 4, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  br label %57

24:                                               ; preds = %19
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  store i64 0, ptr %6, align 8, !tbaa !5
  br label %25

25:                                               ; preds = %49, %24
  %26 = load i64, ptr %6, align 8, !tbaa !5
  %27 = load i64, ptr %3, align 8, !tbaa !5
  %28 = icmp slt i64 %26, %27
  br i1 %28, label %30, label %29

29:                                               ; preds = %25
  store i32 7, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  br label %52

30:                                               ; preds = %25
  %31 = load i64, ptr %6, align 8, !tbaa !5
  %32 = load i64, ptr %5, align 8, !tbaa !5
  %33 = icmp eq i64 %31, %32
  br i1 %33, label %34, label %36

34:                                               ; preds = %30
  %35 = call i32 (ptr, ...) @printf(ptr noundef @.str.2)
  br label %48

36:                                               ; preds = %30
  %37 = load i64, ptr %6, align 8, !tbaa !5
  %38 = load i64, ptr %5, align 8, !tbaa !5
  %39 = add nsw i64 %38, 1
  %40 = load i64, ptr %3, align 8, !tbaa !5
  %41 = srem i64 %39, %40
  %42 = icmp eq i64 %37, %41
  br i1 %42, label %43, label %45

43:                                               ; preds = %36
  %44 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  br label %47

45:                                               ; preds = %36
  %46 = call i32 (ptr, ...) @printf(ptr noundef @.str.4)
  br label %47

47:                                               ; preds = %45, %43
  br label %48

48:                                               ; preds = %47, %34
  br label %49

49:                                               ; preds = %48
  %50 = load i64, ptr %6, align 8, !tbaa !5
  %51 = add nsw i64 %50, 1
  store i64 %51, ptr %6, align 8, !tbaa !5
  br label %25, !llvm.loop !11

52:                                               ; preds = %29
  %53 = call i32 @puts(ptr noundef @.str.5)
  br label %54

54:                                               ; preds = %52
  %55 = load i64, ptr %5, align 8, !tbaa !5
  %56 = add nsw i64 %55, 1
  store i64 %56, ptr %5, align 8, !tbaa !5
  br label %19, !llvm.loop !12

57:                                               ; preds = %23
  store i32 0, ptr %4, align 4
  br label %58

58:                                               ; preds = %57, %16
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  %59 = load i32, ptr %4, align 4
  switch i32 %59, label %63 [
    i32 0, label %60
    i32 2, label %8
  ]

60:                                               ; preds = %58
  br label %8, !llvm.loop !9

61:                                               ; preds = %8
  store i32 0, ptr %1, align 4
  store i32 1, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  %62 = load i32, ptr %1, align 4
  ret i32 %62

63:                                               ; preds = %58
  unreachable
}

; 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}
!12 = distinct !{!12, !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 [8 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [1 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
  %2 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #3
  %3 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %4 = load i64, ptr %1, align 8, !tbaa !5
  %5 = add nsw i64 %4, -1
  store i64 %5, ptr %1, align 8, !tbaa !5
  %.not14 = icmp eq i64 %4, 0
  br i1 %.not14, label %._crit_edge17, label %.lr.ph16

.lr.ph16:                                         ; preds = %0, %.loopexit
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %2)
  %7 = load i64, ptr %2, align 8, !tbaa !5
  %8 = icmp eq i64 %7, 2
  br i1 %8, label %10, label %.preheader11

.preheader11:                                     ; preds = %.lr.ph16
  %9 = icmp sgt i64 %7, 0
  br i1 %9, label %.preheader, label %.loopexit

10:                                               ; preds = %.lr.ph16
  %11 = call i32 @puts(ptr noundef nonnull dereferenceable(1) @.str.1)
  br label %.loopexit, !llvm.loop !9

.preheader:                                       ; preds = %.preheader11, %._crit_edge
  %12 = phi i64 [ %16, %._crit_edge ], [ %7, %.preheader11 ]
  %.0913 = phi i64 [ %14, %._crit_edge ], [ 0, %.preheader11 ]
  %13 = icmp sgt i64 %12, 0
  %14 = add nuw nsw i64 %.0913, 1
  br i1 %13, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %23, %.preheader
  %15 = call i32 @puts(ptr noundef nonnull dereferenceable(1) @.str.5)
  %16 = load i64, ptr %2, align 8, !tbaa !5
  %17 = icmp slt i64 %14, %16
  br i1 %17, label %.preheader, label %.loopexit, !llvm.loop !11

.lr.ph:                                           ; preds = %.preheader, %23
  %18 = phi i64 [ %26, %23 ], [ %12, %.preheader ]
  %.012 = phi i64 [ %25, %23 ], [ 0, %.preheader ]
  %19 = icmp eq i64 %.012, %.0913
  br i1 %19, label %23, label %20

20:                                               ; preds = %.lr.ph
  %21 = srem i64 %14, %18
  %22 = icmp eq i64 %.012, %21
  %.str.3..str.4 = select i1 %22, ptr @.str.3, ptr @.str.4
  br label %23

23:                                               ; preds = %20, %.lr.ph
  %.str.2.sink = phi ptr [ @.str.2, %.lr.ph ], [ %.str.3..str.4, %20 ]
  %24 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) %.str.2.sink)
  %25 = add nuw nsw i64 %.012, 1
  %26 = load i64, ptr %2, align 8, !tbaa !5
  %27 = icmp slt i64 %25, %26
  br i1 %27, label %.lr.ph, label %._crit_edge, !llvm.loop !12

.loopexit:                                        ; preds = %._crit_edge, %.preheader11, %10
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  %28 = load i64, ptr %1, align 8, !tbaa !5
  %29 = add nsw i64 %28, -1
  store i64 %29, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %28, 0
  br i1 %.not, label %._crit_edge17, label %.lr.ph16

._crit_edge17:                                    ; preds = %.loopexit, %0
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #3
  ret i32 0
}

; 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}
!12 = distinct !{!12, !10}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass