; LLVM IR from MostafaTwfiq/C-DataStructures-And-Algorithms :: DataStructure/Graphs/Sources (DirectedGraph)

; 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"

%struct.DirectedGraph = type { ptr, ptr, ptr }

@stderr = external global ptr, align 8
@.str = external hidden unnamed_addr constant [42 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [30 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [31 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.17 = external hidden unnamed_addr constant [20 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
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #1

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) #2

declare ptr @hashMapGet(ptr noundef, ptr noundef) #3

; Function Attrs: nounwind uwtable
declare dso_local void @freeUintptr_t(ptr noundef) #4

; Function Attrs: nounwind uwtable
declare dso_local i32 @compUintptr_t(ptr noundef, ptr noundef) #4

; Function Attrs: nounwind uwtable
declare dso_local i32 @uintptr_tHashFunDirG(ptr noundef) #4

declare ptr @hashSetInitialization(ptr noundef, ptr noundef, ptr noundef) #3

declare void @destroyHashSet(ptr noundef) #3

; Function Attrs: nounwind uwtable
define dso_local i32 @dirGraphNodeIsPartOfCycle(ptr noundef %0, ptr noundef %1) #4 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %10 = load ptr, ptr %4, align 8, !tbaa !5
  %11 = icmp eq ptr %10, null
  br i1 %11, label %12, label %15

12:                                               ; preds = %2
  %13 = load ptr, ptr @stderr, align 8, !tbaa !5
  %14 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %13, ptr noundef @.str.7, ptr noundef @.str.8, ptr noundef @.str.2) #5
  call void @exit(i32 noundef -83386157) #6
  unreachable

15:                                               ; preds = %2
  %16 = load ptr, ptr %5, align 8, !tbaa !5
  %17 = icmp eq ptr %16, null
  br i1 %17, label %18, label %21

18:                                               ; preds = %15
  %19 = load ptr, ptr @stderr, align 8, !tbaa !5
  %20 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %19, ptr noundef @.str, ptr noundef @.str.17, ptr noundef @.str.2) #5
  call void @exit(i32 noundef -83384987) #6
  unreachable

21:                                               ; preds = %15
  br label %22

22:                                               ; preds = %21
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #5
  %23 = load ptr, ptr %4, align 8, !tbaa !5
  %24 = getelementptr inbounds %struct.DirectedGraph, ptr %23, i32 0, i32 0
  %25 = load ptr, ptr %24, align 8, !tbaa !9
  %26 = load ptr, ptr %5, align 8, !tbaa !5
  %27 = call ptr @hashMapGet(ptr noundef %25, ptr noundef %26)
  store ptr %27, ptr %6, align 8, !tbaa !5
  %28 = load ptr, ptr %6, align 8, !tbaa !5
  %29 = icmp eq ptr %28, null
  br i1 %29, label %30, label %31

30:                                               ; preds = %22
  store i32 0, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %38

31:                                               ; preds = %22
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #5
  %32 = call ptr @hashSetInitialization(ptr noundef @freeUintptr_t, ptr noundef @compUintptr_t, ptr noundef @uintptr_tHashFunDirG)
  store ptr %32, ptr %8, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #5
  %33 = load ptr, ptr %6, align 8, !tbaa !5
  %34 = load ptr, ptr %8, align 8, !tbaa !5
  %35 = call i32 @dirGraphNodeIsPartOfCycleR(ptr noundef %33, ptr noundef %34)
  store i32 %35, ptr %9, align 4, !tbaa !11
  %36 = load ptr, ptr %8, align 8, !tbaa !5
  call void @destroyHashSet(ptr noundef %36)
  %37 = load i32, ptr %9, align 4, !tbaa !11
  store i32 %37, ptr %3, align 4
  store i32 1, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #5
  br label %38

38:                                               ; preds = %31, %30
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #5
  %39 = load i32, ptr %3, align 4
  ret i32 %39
}

; Function Attrs: nounwind uwtable
declare dso_local i32 @dirGraphNodeIsPartOfCycleR(ptr noundef, ptr noundef) #4

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { noreturn 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 = { "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 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 #5 = { nounwind }
attributes #6 = { noreturn 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"}
!9 = !{!10, !6, i64 0}
!10 = !{!"DirectedGraph", !6, i64 0, !6, i64 8, !6, i64 16}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}


; 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"

@stderr = external local_unnamed_addr global ptr, align 8
@.str = external hidden unnamed_addr constant [42 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [30 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [31 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.17 = external hidden unnamed_addr constant [20 x i8], align 1

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #0

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) local_unnamed_addr #1

declare ptr @hashMapGet(ptr noundef, ptr noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
declare dso_local void @freeUintptr_t(ptr noundef) #3

; Function Attrs: nounwind uwtable
declare dso_local i32 @compUintptr_t(ptr noundef, ptr noundef) #3

; Function Attrs: nounwind uwtable
declare dso_local i32 @uintptr_tHashFunDirG(ptr noundef) #3

declare ptr @hashSetInitialization(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #2

declare void @destroyHashSet(ptr noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
define dso_local i32 @dirGraphNodeIsPartOfCycle(ptr noundef readonly %0, ptr noundef %1) local_unnamed_addr #3 {
  %3 = icmp eq ptr %0, null
  br i1 %3, label %4, label %7

4:                                                ; preds = %2
  %5 = load ptr, ptr @stderr, align 8, !tbaa !5
  %6 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %5, ptr noundef nonnull @.str.7, ptr noundef nonnull @.str.8, ptr noundef nonnull @.str.2) #4
  tail call void @exit(i32 noundef -83386157) #5
  unreachable

7:                                                ; preds = %2
  %8 = icmp eq ptr %1, null
  br i1 %8, label %9, label %12

9:                                                ; preds = %7
  %10 = load ptr, ptr @stderr, align 8, !tbaa !5
  %11 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %10, ptr noundef nonnull @.str, ptr noundef nonnull @.str.17, ptr noundef nonnull @.str.2) #4
  tail call void @exit(i32 noundef -83384987) #5
  unreachable

12:                                               ; preds = %7
  %13 = load ptr, ptr %0, align 8, !tbaa !9
  %14 = tail call ptr @hashMapGet(ptr noundef %13, ptr noundef nonnull %1) #6
  %15 = icmp eq ptr %14, null
  br i1 %15, label %19, label %16

16:                                               ; preds = %12
  %17 = tail call ptr @hashSetInitialization(ptr noundef nonnull @freeUintptr_t, ptr noundef nonnull @compUintptr_t, ptr noundef nonnull @uintptr_tHashFunDirG) #6
  %18 = tail call i32 @dirGraphNodeIsPartOfCycleR(ptr noundef nonnull %14, ptr noundef %17)
  tail call void @destroyHashSet(ptr noundef %17) #6
  br label %19

19:                                               ; preds = %12, %16
  %.0 = phi i32 [ %18, %16 ], [ 0, %12 ]
  ret i32 %.0
}

; Function Attrs: nounwind uwtable
declare dso_local i32 @dirGraphNodeIsPartOfCycleR(ptr noundef, ptr noundef) local_unnamed_addr #3

attributes #0 = { 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 #1 = { noreturn 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 #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 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 #4 = { cold nounwind }
attributes #5 = { noreturn nounwind }
attributes #6 = { 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"}
!9 = !{!10, !6, i64 0}
!10 = !{!"DirectedGraph", !6, i64 0, !6, i64 8, !6, i64 16}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass