; LLVM IR from TLE-MEC/Hack-CP-DSA :: Hackerrank/Day of the programmer (solution)

; 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 [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [10 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [10 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [10 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  store i32 0, ptr %3, align 4, !tbaa !5
  %4 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  %5 = load i32, ptr %2, align 4, !tbaa !5
  %6 = srem i32 %5, 4
  %7 = icmp eq i32 %6, 0
  br i1 %7, label %8, label %9

8:                                                ; preds = %0
  store i32 1, ptr %3, align 4, !tbaa !5
  br label %9

9:                                                ; preds = %8, %0
  %10 = load i32, ptr %2, align 4, !tbaa !5
  %11 = icmp sgt i32 %10, 1918
  br i1 %11, label %12, label %23

12:                                               ; preds = %9
  %13 = load i32, ptr %2, align 4, !tbaa !5
  %14 = srem i32 %13, 100
  %15 = icmp eq i32 %14, 0
  br i1 %15, label %16, label %17

16:                                               ; preds = %12
  store i32 0, ptr %3, align 4, !tbaa !5
  br label %17

17:                                               ; preds = %16, %12
  %18 = load i32, ptr %2, align 4, !tbaa !5
  %19 = srem i32 %18, 400
  %20 = icmp eq i32 %19, 0
  br i1 %20, label %21, label %22

21:                                               ; preds = %17
  store i32 1, ptr %3, align 4, !tbaa !5
  br label %22

22:                                               ; preds = %21, %17
  br label %23

23:                                               ; preds = %22, %9
  %24 = load i32, ptr %2, align 4, !tbaa !5
  %25 = icmp ne i32 %24, 1918
  br i1 %25, label %26, label %36

26:                                               ; preds = %23
  %27 = load i32, ptr %3, align 4, !tbaa !5
  %28 = icmp eq i32 %27, 0
  br i1 %28, label %29, label %32

29:                                               ; preds = %26
  %30 = load i32, ptr %2, align 4, !tbaa !5
  %31 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i32 noundef %30)
  br label %35

32:                                               ; preds = %26
  %33 = load i32, ptr %2, align 4, !tbaa !5
  %34 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %33)
  br label %35

35:                                               ; preds = %32, %29
  br label %39

36:                                               ; preds = %23
  %37 = load i32, ptr %2, align 4, !tbaa !5
  %38 = call i32 (ptr, ...) @printf(ptr noundef @.str.3, i32 noundef %37)
  br label %39

39:                                               ; preds = %36, %35
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  call void @llvm.lifetime.end.p0(i64 4, 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 @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 = { 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 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


; 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 [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [10 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [10 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [10 x i8], align 1

; Function Attrs: nofree nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #3
  %2 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %3 = load i32, ptr %1, align 4, !tbaa !5
  %4 = and i32 %3, 3
  %5 = icmp eq i32 %4, 0
  %spec.select = zext i1 %5 to i32
  %6 = icmp sgt i32 %3, 1918
  br i1 %6, label %.thread, label %11

.thread:                                          ; preds = %0
  %7 = urem i32 %3, 100
  %8 = icmp eq i32 %7, 0
  %spec.select4 = select i1 %8, i32 0, i32 %spec.select
  %9 = urem i32 %3, 400
  %10 = icmp eq i32 %9, 0
  br i1 %10, label %.thread9, label %12

11:                                               ; preds = %0
  %.not = icmp eq i32 %3, 1918
  br i1 %.not, label %17, label %12

12:                                               ; preds = %.thread, %11
  %.28 = phi i32 [ %spec.select4, %.thread ], [ %spec.select, %11 ]
  %13 = icmp eq i32 %.28, 0
  br i1 %13, label %14, label %.thread9

14:                                               ; preds = %12
  %15 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %3)
  br label %19

.thread9:                                         ; preds = %.thread, %12
  %16 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %3)
  br label %19

17:                                               ; preds = %11
  %18 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i32 noundef 1918)
  br label %19

19:                                               ; preds = %14, %.thread9, %17
  call void @llvm.lifetime.end.p0(i64 4, 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 @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 = { nofree 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass