; LLVM IR from ritikbanger/Hacktoberfest2022-DSA :: 10. Linked List/c lang/CircularLinkedList (Inserting)

; 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.3 = external hidden unnamed_addr constant [24 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [25 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [38 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [16 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [16 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.10 = external hidden unnamed_addr constant [18 x i8], align 1
@.str.11 = external hidden unnamed_addr constant [18 x i8], align 1
@.str.12 = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local i32 @sizeofList() #0

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

; 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 void @add(i32 noundef) #0

; Function Attrs: nounwind uwtable
declare dso_local void @insertBeg(i32 noundef) #0

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

; Function Attrs: nounwind uwtable
declare dso_local void @display() #0

declare i32 @printf(ptr noundef, ...) #2

; 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
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %6 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  %7 = call i32 (ptr, ...) @printf(ptr noundef @.str.4)
  %8 = call i32 (ptr, ...) @printf(ptr noundef @.str.5)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  br label %9

9:                                                ; preds = %68, %0
  br label %10

10:                                               ; preds = %9
  %11 = call i32 (ptr, ...) @printf(ptr noundef @.str.6)
  %12 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.7, ptr noundef %2)
  %13 = load i32, ptr %2, align 4, !tbaa !5
  %14 = icmp eq i32 %13, 1
  br i1 %14, label %15, label %20

15:                                               ; preds = %10
  %16 = call i32 (ptr, ...) @printf(ptr noundef @.str.8)
  %17 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.7, ptr noundef %3)
  %18 = call i32 (ptr, ...) @printf(ptr noundef @.str.9)
  %19 = load i32, ptr %3, align 4, !tbaa !5
  call void @add(i32 noundef %19)
  br label %68

20:                                               ; preds = %10
  %21 = load i32, ptr %2, align 4, !tbaa !5
  %22 = icmp eq i32 %21, 2
  br i1 %22, label %23, label %56

23:                                               ; preds = %20
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  %24 = call i32 @sizeofList()
  store i32 %24, ptr %5, align 4, !tbaa !5
  %25 = call i32 (ptr, ...) @printf(ptr noundef @.str.10)
  %26 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.7, ptr noundef %3)
  br label %27

27:                                               ; preds = %50, %23
  br label %28

28:                                               ; preds = %27
  %29 = call i32 (ptr, ...) @printf(ptr noundef @.str.11)
  %30 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.7, ptr noundef %4)
  %31 = load i32, ptr %4, align 4, !tbaa !5
  %32 = icmp eq i32 %31, 1
  br i1 %32, label %33, label %35

33:                                               ; preds = %28
  %34 = load i32, ptr %3, align 4, !tbaa !5
  call void @insertBeg(i32 noundef %34)
  br label %54

35:                                               ; preds = %28
  %36 = load i32, ptr %4, align 4, !tbaa !5
  %37 = load i32, ptr %5, align 4, !tbaa !5
  %38 = add nsw i32 %37, 1
  %39 = icmp eq i32 %36, %38
  br i1 %39, label %40, label %42

40:                                               ; preds = %35
  %41 = load i32, ptr %3, align 4, !tbaa !5
  call void @add(i32 noundef %41)
  br label %54

42:                                               ; preds = %35
  %43 = load i32, ptr %4, align 4, !tbaa !5
  %44 = icmp slt i32 %43, 1
  br i1 %44, label %50, label %45

45:                                               ; preds = %42
  %46 = load i32, ptr %4, align 4, !tbaa !5
  %47 = load i32, ptr %5, align 4, !tbaa !5
  %48 = add nsw i32 %47, 1
  %49 = icmp sgt i32 %46, %48
  br i1 %49, label %50, label %51

50:                                               ; preds = %45, %42
  br label %27

51:                                               ; preds = %45
  %52 = load i32, ptr %3, align 4, !tbaa !5
  %53 = load i32, ptr %4, align 4, !tbaa !5
  call void @insertPos(i32 noundef %52, i32 noundef %53)
  br label %54

54:                                               ; preds = %51, %40, %33
  %55 = call i32 (ptr, ...) @printf(ptr noundef @.str.9)
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %67

56:                                               ; preds = %20
  %57 = load i32, ptr %2, align 4, !tbaa !5
  %58 = icmp eq i32 %57, 3
  br i1 %58, label %59, label %61

59:                                               ; preds = %56
  call void @display()
  %60 = call i32 (ptr, ...) @printf(ptr noundef @.str.12)
  br label %66

61:                                               ; preds = %56
  %62 = load i32, ptr %2, align 4, !tbaa !5
  %63 = icmp eq i32 %62, 0
  br i1 %63, label %64, label %65

64:                                               ; preds = %61
  br label %69

65:                                               ; preds = %61
  br label %66

66:                                               ; preds = %65, %59
  br label %67

67:                                               ; preds = %66, %54
  br label %68

68:                                               ; preds = %67, %15
  br label %9

69:                                               ; preds = %64
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #3
  %70 = load i32, ptr %1, align 4
  ret i32 %70
}

declare i32 @__isoc99_scanf(ptr noundef, ...) #2

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.3 = external hidden unnamed_addr constant [24 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [25 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [38 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [16 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [16 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.10 = external hidden unnamed_addr constant [18 x i8], align 1
@.str.11 = external hidden unnamed_addr constant [18 x i8], align 1
@.str.12 = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local i32 @sizeofList() 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: 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 void @add(i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local void @insertBeg(i32 noundef) local_unnamed_addr #0

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

; Function Attrs: nounwind uwtable
declare dso_local void @display() local_unnamed_addr #0

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

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3)
  %5 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4)
  %6 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.5)
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #3
  br label %7

7:                                                ; preds = %.backedge, %0
  %8 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.6)
  %9 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.7, ptr noundef nonnull %1)
  %10 = load i32, ptr %1, align 4, !tbaa !5
  switch i32 %10, label %.backedge [
    i32 1, label %11
    i32 2, label %16
    i32 3, label %39
    i32 0, label %41
  ]

.backedge:                                        ; preds = %7, %37, %39, %11
  br label %7

11:                                               ; preds = %7
  %12 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.8)
  %13 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.7, ptr noundef nonnull %2)
  %14 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.9)
  %15 = load i32, ptr %2, align 4, !tbaa !5
  call void @add(i32 noundef %15)
  br label %.backedge

16:                                               ; preds = %7
  %17 = call i32 @sizeofList()
  %18 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.10)
  %19 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.7, ptr noundef nonnull %2)
  %20 = add nsw i32 %17, 1
  br label %21

21:                                               ; preds = %32, %16
  %22 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.11)
  %23 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.7, ptr noundef nonnull %3)
  %24 = load i32, ptr %3, align 4, !tbaa !5
  %25 = icmp eq i32 %24, 1
  br i1 %25, label %26, label %28

26:                                               ; preds = %21
  %27 = load i32, ptr %2, align 4, !tbaa !5
  call void @insertBeg(i32 noundef %27)
  br label %37

28:                                               ; preds = %21
  %29 = icmp eq i32 %24, %20
  br i1 %29, label %30, label %32

30:                                               ; preds = %28
  %31 = load i32, ptr %2, align 4, !tbaa !5
  call void @add(i32 noundef %31)
  br label %37

32:                                               ; preds = %28
  %33 = icmp slt i32 %24, 1
  %34 = icmp sgt i32 %24, %20
  %or.cond = or i1 %33, %34
  br i1 %or.cond, label %21, label %35

35:                                               ; preds = %32
  %36 = load i32, ptr %2, align 4, !tbaa !5
  call void @insertPos(i32 noundef %36, i32 noundef %24)
  br label %37

37:                                               ; preds = %35, %30, %26
  %38 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.9)
  br label %.backedge

39:                                               ; preds = %7
  call void @display()
  %40 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.12)
  br label %.backedge

41:                                               ; preds = %7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #3
  ret i32 0
}

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

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 }

!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: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LICMPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass