; LLVM IR from DionysiosB/CodeForces :: 1500-1599 (1542B-PlusAndMultiply)

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

10:                                               ; preds = %58, %56, %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 %59

14:                                               ; preds = %10
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %15 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %5, ptr noundef %3, ptr noundef %4)
  %16 = load i64, ptr %4, align 8, !tbaa !9
  %17 = icmp eq i64 %16, 1
  br i1 %17, label %18, label %20

18:                                               ; preds = %14
  %19 = call i32 @puts(ptr noundef @.str.2)
  store i32 2, ptr %6, align 4
  br label %56, !llvm.loop !11

20:                                               ; preds = %14
  %21 = load i64, ptr %3, align 8, !tbaa !9
  %22 = icmp eq i64 %21, 1
  br i1 %22, label %23, label %31

23:                                               ; preds = %20
  %24 = load i64, ptr %5, align 8, !tbaa !9
  %25 = load i64, ptr %4, align 8, !tbaa !9
  %26 = srem i64 %24, %25
  %27 = icmp eq i64 %26, 1
  %28 = zext i1 %27 to i64
  %29 = select i1 %27, ptr @.str.2, ptr @.str.3
  %30 = call i32 @puts(ptr noundef %29)
  store i32 2, ptr %6, align 4
  br label %56, !llvm.loop !11

31:                                               ; preds = %20
  br label %32

32:                                               ; preds = %31
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  store i64 1, ptr %7, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 1, ptr %8) #3
  store i8 0, ptr %8, align 1, !tbaa !13
  br label %33

33:                                               ; preds = %46, %32
  %34 = load i64, ptr %7, align 8, !tbaa !9
  %35 = load i64, ptr %5, align 8, !tbaa !9
  %36 = icmp sle i64 %34, %35
  br i1 %36, label %37, label %50

37:                                               ; preds = %33
  %38 = load i64, ptr %5, align 8, !tbaa !9
  %39 = load i64, ptr %4, align 8, !tbaa !9
  %40 = srem i64 %38, %39
  %41 = load i64, ptr %7, align 8, !tbaa !9
  %42 = load i64, ptr %4, align 8, !tbaa !9
  %43 = srem i64 %41, %42
  %44 = icmp eq i64 %40, %43
  br i1 %44, label %45, label %46

45:                                               ; preds = %37
  store i8 1, ptr %8, align 1, !tbaa !13
  br label %50

46:                                               ; preds = %37
  %47 = load i64, ptr %3, align 8, !tbaa !9
  %48 = load i64, ptr %7, align 8, !tbaa !9
  %49 = mul nsw i64 %48, %47
  store i64 %49, ptr %7, align 8, !tbaa !9
  br label %33, !llvm.loop !15

50:                                               ; preds = %45, %33
  %51 = load i8, ptr %8, align 1, !tbaa !13, !range !16, !noundef !17
  %52 = trunc i8 %51 to i1
  %53 = zext i1 %52 to i64
  %54 = select i1 %52, ptr @.str.2, ptr @.str.3
  %55 = call i32 @puts(ptr noundef %54)
  call void @llvm.lifetime.end.p0(i64 1, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  store i32 0, ptr %6, align 4
  br label %56

56:                                               ; preds = %50, %23, %18
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  %57 = load i32, ptr %6, align 4
  switch i32 %57, label %61 [
    i32 0, label %58
    i32 2, label %10
  ]

58:                                               ; preds = %56
  br label %10, !llvm.loop !11

59:                                               ; preds = %10
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  %60 = load i32, ptr %1, align 4
  ret i32 %60

61:                                               ; preds = %56
  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

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


; 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 [15 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [3 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 i64, align 8
  %4 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #3
  %5 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %6 = load i64, ptr %1, align 8, !tbaa !5
  %7 = add nsw i64 %6, -1
  store i64 %7, ptr %1, align 8, !tbaa !5
  %.not13 = icmp eq i64 %6, 0
  br i1 %.not13, label %._crit_edge16, label %.lr.ph15

.lr.ph15:                                         ; preds = %0, %._crit_edge
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #3
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %4, ptr noundef nonnull %2, ptr noundef nonnull %3)
  %9 = load i64, ptr %3, align 8, !tbaa !9
  %10 = icmp eq i64 %9, 1
  br i1 %10, label %._crit_edge, label %11, !llvm.loop !11

11:                                               ; preds = %.lr.ph15
  %12 = load i64, ptr %2, align 8, !tbaa !9
  %13 = icmp eq i64 %12, 1
  %14 = load i64, ptr %4, align 8, !tbaa !9
  br i1 %13, label %16, label %.preheader

.preheader:                                       ; preds = %11
  %.not8.not9 = icmp slt i64 %14, 1
  br i1 %.not8.not9, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %.preheader
  %15 = srem i64 %14, %9
  br label %20

16:                                               ; preds = %11
  %17 = srem i64 %14, %9
  %18 = icmp eq i64 %17, 1
  %19 = select i1 %18, ptr @.str.2, ptr @.str.3
  br label %._crit_edge, !llvm.loop !11

20:                                               ; preds = %.lr.ph, %23
  %.0510 = phi i64 [ 1, %.lr.ph ], [ %24, %23 ]
  %21 = srem i64 %.0510, %9
  %22 = icmp eq i64 %15, %21
  br i1 %22, label %._crit_edge, label %23

23:                                               ; preds = %20
  %24 = mul nsw i64 %.0510, %12
  %.not8.not = icmp sgt i64 %24, %14
  br i1 %.not8.not, label %._crit_edge, label %20, !llvm.loop !13

._crit_edge:                                      ; preds = %20, %23, %.preheader, %.lr.ph15, %16
  %.sink = phi ptr [ %19, %16 ], [ @.str.2, %.lr.ph15 ], [ @.str.3, %.preheader ], [ @.str.2, %20 ], [ @.str.3, %23 ]
  %25 = call i32 @puts(ptr noundef nonnull dereferenceable(1) %.sink)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  %26 = load i64, ptr %1, align 8, !tbaa !5
  %27 = add nsw i64 %26, -1
  store i64 %27, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %26, 0
  br i1 %.not, label %._crit_edge16, label %.lr.ph15

._crit_edge16:                                    ; preds = %._crit_edge, %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: 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 = !{!10, !10, i64 0}
!10 = !{!"long long", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


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