; LLVM IR from freddiev4/dailyprogrammerchallenges :: Easy Challenges/Challenge 0023 Easy/solutions (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.1 = external hidden unnamed_addr constant [34 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [26 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [27 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local void @print_list(ptr noundef) #0

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

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

; Function Attrs: nounwind uwtable
declare dso_local ptr @insert_node(ptr noundef, i32 noundef) #0

; Function Attrs: nounwind uwtable
declare dso_local void @split_list(ptr noundef, ptr noundef, ptr noundef) #0

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

10:                                               ; preds = %18, %2
  %11 = load i32, ptr %9, align 4, !tbaa !5
  %12 = icmp slt i32 %11, 13
  br i1 %12, label %13, label %21

13:                                               ; preds = %10
  %14 = load ptr, ptr %6, align 8, !tbaa !9
  %15 = call i32 @rand() #4
  %16 = srem i32 %15, 1234
  %17 = call ptr @insert_node(ptr noundef %14, i32 noundef %16)
  store ptr %17, ptr %6, align 8, !tbaa !9
  br label %18

18:                                               ; preds = %13
  %19 = load i32, ptr %9, align 4, !tbaa !5
  %20 = add nsw i32 %19, 1
  store i32 %20, ptr %9, align 4, !tbaa !5
  br label %10, !llvm.loop !11

21:                                               ; preds = %10
  %22 = call i32 (ptr, ...) @printf(ptr noundef @.str.1)
  %23 = load ptr, ptr %6, align 8, !tbaa !9
  call void @print_list(ptr noundef %23)
  %24 = call i32 (ptr, ...) @printf(ptr noundef @.str.2)
  %25 = load ptr, ptr %6, align 8, !tbaa !9
  call void @split_list(ptr noundef %25, ptr noundef %7, ptr noundef %8)
  %26 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  %27 = load ptr, ptr %7, align 8, !tbaa !9
  call void @print_list(ptr noundef %27)
  %28 = call i32 (ptr, ...) @printf(ptr noundef @.str.2)
  %29 = call i32 (ptr, ...) @printf(ptr noundef @.str.4)
  %30 = load ptr, ptr %8, align 8, !tbaa !9
  call void @print_list(ptr noundef %30)
  %31 = call i32 (ptr, ...) @printf(ptr noundef @.str.2)
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  ret i32 0
}

; Function Attrs: nounwind
declare i32 @rand() #3

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 "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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; 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.1 = external hidden unnamed_addr constant [34 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [26 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [27 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local void @print_list(ptr noundef) local_unnamed_addr #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 @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

; Function Attrs: nounwind uwtable
declare dso_local ptr @insert_node(ptr noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local void @split_list(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @main(i32 noundef %0, ptr nocapture noundef readnone %1) local_unnamed_addr #0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #4
  store ptr null, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #4
  store ptr null, ptr %4, align 8, !tbaa !5
  %5 = tail call i32 @rand() #4
  %6 = srem i32 %5, 1234
  %7 = tail call ptr @insert_node(ptr noundef null, i32 noundef %6)
  %8 = tail call i32 @rand() #4
  %9 = srem i32 %8, 1234
  %10 = tail call ptr @insert_node(ptr noundef %7, i32 noundef %9)
  %11 = tail call i32 @rand() #4
  %12 = srem i32 %11, 1234
  %13 = tail call ptr @insert_node(ptr noundef %10, i32 noundef %12)
  %14 = tail call i32 @rand() #4
  %15 = srem i32 %14, 1234
  %16 = tail call ptr @insert_node(ptr noundef %13, i32 noundef %15)
  %17 = tail call i32 @rand() #4
  %18 = srem i32 %17, 1234
  %19 = tail call ptr @insert_node(ptr noundef %16, i32 noundef %18)
  %20 = tail call i32 @rand() #4
  %21 = srem i32 %20, 1234
  %22 = tail call ptr @insert_node(ptr noundef %19, i32 noundef %21)
  %23 = tail call i32 @rand() #4
  %24 = srem i32 %23, 1234
  %25 = tail call ptr @insert_node(ptr noundef %22, i32 noundef %24)
  %26 = tail call i32 @rand() #4
  %27 = srem i32 %26, 1234
  %28 = tail call ptr @insert_node(ptr noundef %25, i32 noundef %27)
  %29 = tail call i32 @rand() #4
  %30 = srem i32 %29, 1234
  %31 = tail call ptr @insert_node(ptr noundef %28, i32 noundef %30)
  %32 = tail call i32 @rand() #4
  %33 = srem i32 %32, 1234
  %34 = tail call ptr @insert_node(ptr noundef %31, i32 noundef %33)
  %35 = tail call i32 @rand() #4
  %36 = srem i32 %35, 1234
  %37 = tail call ptr @insert_node(ptr noundef %34, i32 noundef %36)
  %38 = tail call i32 @rand() #4
  %39 = srem i32 %38, 1234
  %40 = tail call ptr @insert_node(ptr noundef %37, i32 noundef %39)
  %41 = tail call i32 @rand() #4
  %42 = srem i32 %41, 1234
  %43 = tail call ptr @insert_node(ptr noundef %40, i32 noundef %42)
  %44 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1)
  tail call void @print_list(ptr noundef %43)
  %45 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2)
  call void @split_list(ptr noundef %43, ptr noundef nonnull %3, ptr noundef nonnull %4)
  %46 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3)
  %47 = load ptr, ptr %3, align 8, !tbaa !5
  call void @print_list(ptr noundef %47)
  %48 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2)
  %49 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4)
  %50 = load ptr, ptr %4, align 8, !tbaa !5
  call void @print_list(ptr noundef %50)
  %51 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #4
  ret i32 0
}

; Function Attrs: nounwind
declare i32 @rand() local_unnamed_addr #3

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 = { 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 "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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


; Effective O3 passes: GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LCSSAPass,LoopRotatePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass