; LLVM IR from DionysiosB/CodeForces :: 1933B-TurtleMathFastThreeTask (main)

; 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 [2 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [2 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 i8, align 1
  %5 = alloca i32, align 4
  %6 = alloca i64, align 8
  %7 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #3
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  br label %9

9:                                                ; preds = %53, %0
  %10 = load i64, ptr %2, align 8, !tbaa !5
  %11 = add nsw i64 %10, -1
  store i64 %11, ptr %2, align 8, !tbaa !5
  %12 = icmp ne i64 %10, 0
  br i1 %12, label %13, label %54

13:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  %14 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %3)
  call void @llvm.lifetime.start.p0(i64 1, ptr %4) #3
  store i8 0, ptr %4, align 1, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  store i32 0, ptr %5, align 4, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  store i64 0, ptr %6, align 8, !tbaa !5
  br label %15

15:                                               ; preds = %32, %13
  %16 = load i64, ptr %6, align 8, !tbaa !5
  %17 = load i64, ptr %3, align 8, !tbaa !5
  %18 = icmp slt i64 %16, %17
  br i1 %18, label %20, label %19

19:                                               ; preds = %15
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  br label %35

20:                                               ; preds = %15
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  %21 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %7)
  %22 = load i32, ptr %7, align 4, !tbaa !11
  %23 = srem i32 %22, 3
  %24 = icmp eq i32 %23, 1
  br i1 %24, label %25, label %26

25:                                               ; preds = %20
  store i8 1, ptr %4, align 1, !tbaa !9
  br label %26

26:                                               ; preds = %25, %20
  %27 = load i32, ptr %7, align 4, !tbaa !11
  %28 = load i32, ptr %5, align 4, !tbaa !11
  %29 = add nsw i32 %28, %27
  store i32 %29, ptr %5, align 4, !tbaa !11
  %30 = load i32, ptr %5, align 4, !tbaa !11
  %31 = srem i32 %30, 3
  store i32 %31, ptr %5, align 4, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  br label %32

32:                                               ; preds = %26
  %33 = load i64, ptr %6, align 8, !tbaa !5
  %34 = add nsw i64 %33, 1
  store i64 %34, ptr %6, align 8, !tbaa !5
  br label %15, !llvm.loop !13

35:                                               ; preds = %19
  %36 = load i8, ptr %4, align 1, !tbaa !9, !range !15, !noundef !16
  %37 = trunc i8 %36 to i1
  br i1 %37, label %44, label %38

38:                                               ; preds = %35
  %39 = load i32, ptr %5, align 4, !tbaa !11
  %40 = srem i32 %39, 3
  %41 = icmp eq i32 %40, 1
  br i1 %41, label %42, label %44

42:                                               ; preds = %38
  %43 = call i32 @puts(ptr noundef @.str.2)
  br label %53

44:                                               ; preds = %38, %35
  %45 = load i32, ptr %5, align 4, !tbaa !11
  %46 = srem i32 %45, 3
  %47 = icmp ne i32 %46, 0
  br i1 %47, label %48, label %50

48:                                               ; preds = %44
  %49 = call i32 @puts(ptr noundef @.str.3)
  br label %52

50:                                               ; preds = %44
  %51 = call i32 @puts(ptr noundef @.str.4)
  br label %52

52:                                               ; preds = %50, %48
  br label %53

53:                                               ; preds = %52, %42
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 1, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  br label %9, !llvm.loop !17

54:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  %55 = load i32, ptr %1, align 4
  ret i32 %55
}

; 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

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

declare i32 @puts(ptr noundef) #2

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 = !{!10, !10, i64 0}
!10 = !{!"bool", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = !{i8 0, i8 2}
!16 = !{}
!17 = distinct !{!17, !14}


; 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 [2 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [2 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
  %3 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #3
  %4 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %5 = load i64, ptr %1, align 8, !tbaa !5
  %6 = add nsw i64 %5, -1
  store i64 %6, ptr %1, align 8, !tbaa !5
  %.not17 = icmp eq i64 %5, 0
  br i1 %.not17, label %._crit_edge20, label %.lr.ph19

.lr.ph19:                                         ; preds = %0, %21
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %2)
  %8 = load i64, ptr %2, align 8, !tbaa !5
  %9 = icmp sgt i64 %8, 0
  br i1 %9, label %.lr.ph, label %.thread

._crit_edge:                                      ; preds = %.lr.ph
  %10 = icmp ne i32 %16, 1
  %or.cond.not = select i1 %spec.select, i1 true, i1 %10
  br i1 %or.cond.not, label %20, label %21

.lr.ph:                                           ; preds = %.lr.ph19, %.lr.ph
  %.015 = phi i64 [ %17, %.lr.ph ], [ 0, %.lr.ph19 ]
  %.0814 = phi i32 [ %16, %.lr.ph ], [ 0, %.lr.ph19 ]
  %.0913 = phi i1 [ %spec.select, %.lr.ph ], [ false, %.lr.ph19 ]
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #3
  %11 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %3)
  %12 = load i32, ptr %3, align 4, !tbaa !9
  %13 = srem i32 %12, 3
  %14 = icmp eq i32 %13, 1
  %spec.select = select i1 %14, i1 true, i1 %.0913
  %15 = add nsw i32 %12, %.0814
  %16 = srem i32 %15, 3
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #3
  %17 = add nuw nsw i64 %.015, 1
  %18 = load i64, ptr %2, align 8, !tbaa !5
  %19 = icmp slt i64 %17, %18
  br i1 %19, label %.lr.ph, label %._crit_edge, !llvm.loop !11

20:                                               ; preds = %._crit_edge
  %.not10 = icmp eq i32 %16, 0
  br i1 %.not10, label %.thread, label %21

.thread:                                          ; preds = %.lr.ph19, %20
  br label %21

21:                                               ; preds = %20, %._crit_edge, %.thread
  %.str.3.sink = phi ptr [ @.str.4, %.thread ], [ @.str.2, %._crit_edge ], [ @.str.3, %20 ]
  %22 = call i32 @puts(ptr noundef nonnull dereferenceable(1) %.str.3.sink)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  %23 = load i64, ptr %1, align 8, !tbaa !5
  %24 = add nsw i64 %23, -1
  store i64 %24, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %23, 0
  br i1 %.not, label %._crit_edge20, label %.lr.ph19, !llvm.loop !13

._crit_edge20:                                    ; preds = %21, %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: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

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

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 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


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