; LLVM IR from DionysiosB/CodeForces :: 1400-1499 (1498A-GCDSum)

; 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 [5 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [6 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local noundef i64 @_Z3gcdxx(i64 noundef, i64 noundef) #0

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #1 {
  %1 = alloca i32, align 4
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i32, align 4
  %7 = alloca i64, align 8
  %8 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #4
  %9 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  br label %10

10:                                               ; preds = %50, %0
  %11 = load i64, ptr %2, align 8, !tbaa !5
  %12 = add nsw i64 %11, -1
  store i64 %12, ptr %2, align 8, !tbaa !5
  %13 = icmp ne i64 %11, 0
  br i1 %13, label %14, label %53

14:                                               ; preds = %10
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #4
  %15 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %3)
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #4
  store i64 0, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #4
  %16 = load i64, ptr %3, align 8, !tbaa !5
  store i64 %16, ptr %5, align 8, !tbaa !5
  br label %17

17:                                               ; preds = %46, %14
  %18 = load i64, ptr %5, align 8, !tbaa !5
  %19 = load i64, ptr %3, align 8, !tbaa !5
  %20 = add nsw i64 %19, 100
  %21 = icmp slt i64 %18, %20
  br i1 %21, label %23, label %22

22:                                               ; preds = %17
  store i32 4, ptr %6, align 4
  br label %49

23:                                               ; preds = %17
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #4
  %24 = load i64, ptr %5, align 8, !tbaa !5
  store i64 %24, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #4
  store i64 0, ptr %8, align 8, !tbaa !5
  br label %25

25:                                               ; preds = %28, %23
  %26 = load i64, ptr %7, align 8, !tbaa !5
  %27 = icmp ne i64 %26, 0
  br i1 %27, label %28, label %35

28:                                               ; preds = %25
  %29 = load i64, ptr %7, align 8, !tbaa !5
  %30 = srem i64 %29, 10
  %31 = load i64, ptr %8, align 8, !tbaa !5
  %32 = add nsw i64 %31, %30
  store i64 %32, ptr %8, align 8, !tbaa !5
  %33 = load i64, ptr %7, align 8, !tbaa !5
  %34 = sdiv i64 %33, 10
  store i64 %34, ptr %7, align 8, !tbaa !5
  br label %25, !llvm.loop !9

35:                                               ; preds = %25
  %36 = load i64, ptr %5, align 8, !tbaa !5
  %37 = load i64, ptr %8, align 8, !tbaa !5
  %38 = call noundef i64 @_Z3gcdxx(i64 noundef %36, i64 noundef %37)
  %39 = icmp sgt i64 %38, 1
  br i1 %39, label %40, label %42

40:                                               ; preds = %35
  %41 = load i64, ptr %5, align 8, !tbaa !5
  store i64 %41, ptr %4, align 8, !tbaa !5
  store i32 4, ptr %6, align 4
  br label %43

42:                                               ; preds = %35
  store i32 0, ptr %6, align 4
  br label %43

43:                                               ; preds = %42, %40
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #4
  %44 = load i32, ptr %6, align 4
  switch i32 %44, label %49 [
    i32 0, label %45
  ]

45:                                               ; preds = %43
  br label %46

46:                                               ; preds = %45
  %47 = load i64, ptr %5, align 8, !tbaa !5
  %48 = add nsw i64 %47, 1
  store i64 %48, ptr %5, align 8, !tbaa !5
  br label %17, !llvm.loop !11

49:                                               ; preds = %43, %22
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  br label %50

50:                                               ; preds = %49
  %51 = load i64, ptr %4, align 8, !tbaa !5
  %52 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i64 noundef %51)
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #4
  br label %10, !llvm.loop !12

53:                                               ; preds = %10
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #4
  %54 = load i32, ptr %1, align 4
  ret i32 %54
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

declare i32 @__isoc99_scanf(ptr noundef, ...) #3

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

declare i32 @printf(ptr noundef, ...) #3

attributes #0 = { 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" }
attributes #1 = { 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 #2 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { "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 #4 = { 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 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 [5 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [6 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local noundef i64 @_Z3gcdxx(i64 noundef, i64 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #1 {
  %1 = alloca i64, align 8
  %2 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #4
  %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
  %.not26 = icmp eq i64 %4, 0
  br i1 %.not26, label %._crit_edge29, label %.preheader.preheader

.preheader.preheader:                             ; preds = %0, %._crit_edge22
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #4
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %2)
  %7 = load i64, ptr %2, align 8, !tbaa !5
  br label %.preheader

.preheader:                                       ; preds = %.preheader.preheader, %13
  %.01521 = phi i64 [ %14, %13 ], [ %7, %.preheader.preheader ]
  %.not1718 = icmp eq i64 %.01521, 0
  br i1 %.not1718, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %.preheader, %.lr.ph
  %.020 = phi i64 [ %9, %.lr.ph ], [ 0, %.preheader ]
  %.01319 = phi i64 [ %10, %.lr.ph ], [ %.01521, %.preheader ]
  %8 = srem i64 %.01319, 10
  %9 = add nsw i64 %.020, %8
  %10 = sdiv i64 %.01319, 10
  %.01319.off = add i64 %.01319, 9
  %.not17 = icmp ult i64 %.01319.off, 19
  br i1 %.not17, label %._crit_edge, label %.lr.ph, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %.preheader
  %.0.lcssa = phi i64 [ 0, %.preheader ], [ %9, %.lr.ph ]
  %11 = call noundef i64 @_Z3gcdxx(i64 noundef %.01521, i64 noundef %.0.lcssa)
  %12 = icmp slt i64 %11, 2
  br i1 %12, label %13, label %._crit_edge22

13:                                               ; preds = %._crit_edge
  %14 = add nsw i64 %.01521, 1
  %15 = load i64, ptr %2, align 8, !tbaa !5
  %16 = add nsw i64 %15, 99
  %17 = icmp slt i64 %.01521, %16
  br i1 %17, label %.preheader, label %._crit_edge22, !llvm.loop !11

._crit_edge22:                                    ; preds = %._crit_edge, %13
  %.2.ph = phi i64 [ %.01521, %._crit_edge ], [ 0, %13 ]
  %18 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i64 noundef %.2.ph)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #4
  %19 = load i64, ptr %1, align 8, !tbaa !5
  %20 = add nsw i64 %19, -1
  store i64 %20, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %19, 0
  br i1 %.not, label %._crit_edge29, label %.preheader.preheader, !llvm.loop !12

._crit_edge29:                                    ; preds = %._crit_edge22, %0
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #4
  ret i32 0
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

attributes #0 = { 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" }
attributes #1 = { 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 #2 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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 #4 = { 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 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: CorrelatedValuePropagationPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopInstSimplifyPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SCCPPass,SROAPass,SimplifyCFGPass