; LLVM IR from gargarchit/Data_Structure_n_Algorithms :: Graphs (AdjLinked_List_Implementation)

; 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 [3 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [21 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [24 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [17 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [64 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [12 x i8], align 1
@.str.10 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.11 = external hidden unnamed_addr constant [22 x i8], align 1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
declare dso_local ptr @createGraph(i32 noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local void @addEdge(ptr noundef, i32 noundef, i32 noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local void @printGraph(ptr noundef) #1

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

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

9:                                                ; preds = %34, %0
  %10 = load i32, ptr %3, align 4, !tbaa !5
  %11 = icmp ne i32 %10, 0
  br i1 %11, label %12, label %35

12:                                               ; preds = %9
  %13 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  %14 = call i32 (ptr, ...) @printf(ptr noundef @.str.4)
  %15 = call i32 (ptr, ...) @printf(ptr noundef @.str.5)
  %16 = call i32 (ptr, ...) @printf(ptr noundef @.str.6)
  %17 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.7, ptr noundef %3)
  %18 = load i32, ptr %3, align 4, !tbaa !5
  %19 = icmp eq i32 %18, 0
  br i1 %19, label %20, label %22

20:                                               ; preds = %12
  %21 = call i32 (ptr, ...) @printf(ptr noundef @.str.8)
  store i32 1, ptr %4, align 4
  br label %36

22:                                               ; preds = %12
  %23 = load i32, ptr %3, align 4, !tbaa !5
  switch i32 %23, label %32 [
    i32 1, label %24
    i32 2, label %30
  ]

24:                                               ; preds = %22
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  %25 = call i32 (ptr, ...) @printf(ptr noundef @.str.9)
  %26 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.10, ptr noundef %5, ptr noundef %6)
  %27 = load ptr, ptr %2, align 8, !tbaa !9
  %28 = load i32, ptr %5, align 4, !tbaa !5
  %29 = load i32, ptr %6, align 4, !tbaa !5
  call void @addEdge(ptr noundef %27, i32 noundef %28, i32 noundef %29)
  store i32 4, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %34

30:                                               ; preds = %22
  %31 = load ptr, ptr %2, align 8, !tbaa !9
  call void @printGraph(ptr noundef %31)
  br label %34

32:                                               ; preds = %22
  %33 = call i32 (ptr, ...) @printf(ptr noundef @.str.11)
  br label %34

34:                                               ; preds = %32, %30, %24
  br label %9, !llvm.loop !11

35:                                               ; preds = %9
  store i32 0, ptr %4, align 4
  br label %36

36:                                               ; preds = %35, %20
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #3
  %37 = load i32, ptr %4, align 4
  switch i32 %37, label %39 [
    i32 0, label %38
    i32 1, label %38
  ]

38:                                               ; preds = %36, %36
  ret void

39:                                               ; preds = %36
  unreachable
}

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

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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"}
!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"

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

; Function Attrs: noreturn nounwind uwtable
define dso_local void @main() local_unnamed_addr #1 {
  %1 = tail call ptr @createGraph(i32 noundef 5)
  unreachable
}

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 = { noreturn 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" }

!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)"}


; Effective O3 passes: BDCEPass,EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,LoopSimplifyPass,PostOrderFunctionAttrsPass,SCCPPass,SROAPass,SimplifyCFGPass,TailCallElimPass