; 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 }
%struct.DirGraphNode = type { ptr, ptr, ptr }
%struct.Entry = type { ptr, 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.9 = external hidden unnamed_addr constant [14 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 void @free(ptr noundef) #1

; 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

declare ptr @hashMapToArray(ptr noundef) #3

declare i32 @hashMapGetLength(ptr noundef) #3

declare i32 @arrayListGetIndex(ptr noundef, ptr noundef) #3

declare ptr @arrayListRemoveAtIndexWtFr(ptr noundef, i32 noundef) #3

; Function Attrs: nounwind uwtable
define dso_local ptr @dirGraphRemoveNodeWtoFr(ptr noundef %0, ptr noundef %1) #4 {
  %3 = alloca ptr, align 8
  %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
  %10 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = icmp eq ptr %11, null
  br i1 %12, label %13, label %16

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

16:                                               ; preds = %2
  %17 = load ptr, ptr %5, align 8, !tbaa !5
  %18 = icmp eq ptr %17, null
  br i1 %18, label %19, label %22

19:                                               ; preds = %16
  %20 = load ptr, ptr @stderr, align 8, !tbaa !5
  %21 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %20, ptr noundef @.str, ptr noundef @.str.9, ptr noundef @.str.2) #5
  call void @exit(i32 noundef -83384987) #6
  unreachable

22:                                               ; preds = %16
  br label %23

23:                                               ; preds = %22
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #5
  %24 = load ptr, ptr %4, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct.DirectedGraph, ptr %24, i32 0, i32 0
  %26 = load ptr, ptr %25, align 8, !tbaa !9
  %27 = load ptr, ptr %5, align 8, !tbaa !5
  %28 = call ptr @hashMapGet(ptr noundef %26, ptr noundef %27)
  store ptr %28, ptr %6, align 8, !tbaa !5
  %29 = load ptr, ptr %6, align 8, !tbaa !5
  %30 = icmp eq ptr %29, null
  br i1 %30, label %31, label %32

31:                                               ; preds = %23
  store ptr null, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %80

32:                                               ; preds = %23
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #5
  %33 = load ptr, ptr %4, align 8, !tbaa !5
  %34 = getelementptr inbounds %struct.DirectedGraph, ptr %33, i32 0, i32 0
  %35 = load ptr, ptr %34, align 8, !tbaa !9
  %36 = call ptr @hashMapToArray(ptr noundef %35)
  store ptr %36, ptr %8, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #5
  store i32 0, ptr %9, align 4, !tbaa !11
  br label %37

37:                                               ; preds = %68, %32
  %38 = load i32, ptr %9, align 4, !tbaa !11
  %39 = load ptr, ptr %4, align 8, !tbaa !5
  %40 = getelementptr inbounds %struct.DirectedGraph, ptr %39, i32 0, i32 0
  %41 = load ptr, ptr %40, align 8, !tbaa !9
  %42 = call i32 @hashMapGetLength(ptr noundef %41)
  %43 = icmp slt i32 %38, %42
  br i1 %43, label %45, label %44

44:                                               ; preds = %37
  store i32 2, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #5
  br label %71

45:                                               ; preds = %37
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #5
  %46 = load ptr, ptr %8, align 8, !tbaa !5
  %47 = load i32, ptr %9, align 4, !tbaa !11
  %48 = sext i32 %47 to i64
  %49 = getelementptr inbounds ptr, ptr %46, i64 %48
  %50 = load ptr, ptr %49, align 8, !tbaa !5
  %51 = getelementptr inbounds %struct.DirGraphNode, ptr %50, i32 0, i32 1
  %52 = load ptr, ptr %51, align 8, !tbaa !13
  %53 = load ptr, ptr %6, align 8, !tbaa !5
  %54 = call i32 @arrayListGetIndex(ptr noundef %52, ptr noundef %53)
  store i32 %54, ptr %10, align 4, !tbaa !11
  %55 = load i32, ptr %10, align 4, !tbaa !11
  %56 = icmp ne i32 %55, -1
  br i1 %56, label %57, label %67

57:                                               ; preds = %45
  %58 = load ptr, ptr %8, align 8, !tbaa !5
  %59 = load i32, ptr %9, align 4, !tbaa !11
  %60 = sext i32 %59 to i64
  %61 = getelementptr inbounds ptr, ptr %58, i64 %60
  %62 = load ptr, ptr %61, align 8, !tbaa !5
  %63 = getelementptr inbounds %struct.DirGraphNode, ptr %62, i32 0, i32 1
  %64 = load ptr, ptr %63, align 8, !tbaa !13
  %65 = load i32, ptr %10, align 4, !tbaa !11
  %66 = call ptr @arrayListRemoveAtIndexWtFr(ptr noundef %64, i32 noundef %65)
  br label %67

67:                                               ; preds = %57, %45
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #5
  br label %68

68:                                               ; preds = %67
  %69 = load i32, ptr %9, align 4, !tbaa !11
  %70 = add nsw i32 %69, 1
  store i32 %70, ptr %9, align 4, !tbaa !11
  br label %37, !llvm.loop !15

71:                                               ; preds = %44
  %72 = load ptr, ptr %8, align 8, !tbaa !5
  call void @free(ptr noundef %72) #5
  %73 = load ptr, ptr %4, align 8, !tbaa !5
  %74 = getelementptr inbounds %struct.DirectedGraph, ptr %73, i32 0, i32 0
  %75 = load ptr, ptr %74, align 8, !tbaa !9
  %76 = load ptr, ptr %5, align 8, !tbaa !5
  %77 = call ptr @hashMapDeleteWtoFrAll(ptr noundef %75, ptr noundef %76)
  %78 = getelementptr inbounds %struct.Entry, ptr %77, i32 0, i32 0
  %79 = load ptr, ptr %78, align 8, !tbaa !17
  store ptr %79, ptr %3, align 8
  store i32 1, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #5
  br label %80

80:                                               ; preds = %71, %31
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #5
  %81 = load ptr, ptr %3, align 8
  ret ptr %81
}

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

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}
!13 = !{!14, !6, i64 8}
!14 = !{!"DirGraphNode", !6, i64 0, !6, i64 8, !6, i64 16}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}
!17 = !{!18, !6, i64 0}
!18 = !{!"Entry", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24}


; 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.9 = external hidden unnamed_addr constant [14 x i8], align 1

; Function Attrs: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #0

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #1

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

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

declare ptr @hashMapToArray(ptr noundef) local_unnamed_addr #3

declare i32 @hashMapGetLength(ptr noundef) local_unnamed_addr #3

declare i32 @arrayListGetIndex(ptr noundef, ptr noundef) local_unnamed_addr #3

declare ptr @arrayListRemoveAtIndexWtFr(ptr noundef, i32 noundef) local_unnamed_addr #3

; Function Attrs: nounwind uwtable
define dso_local ptr @dirGraphRemoveNodeWtoFr(ptr noundef readonly %0, ptr noundef %1) local_unnamed_addr #4 {
  %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) #5
  tail call void @exit(i32 noundef -83386157) #6
  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.9, ptr noundef nonnull @.str.2) #5
  tail call void @exit(i32 noundef -83384987) #6
  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) #7
  %15 = icmp eq ptr %14, null
  br i1 %15, label %40, label %16

16:                                               ; preds = %12
  %17 = load ptr, ptr %0, align 8, !tbaa !9
  %18 = tail call ptr @hashMapToArray(ptr noundef %17) #7
  %19 = load ptr, ptr %0, align 8, !tbaa !9
  %20 = tail call i32 @hashMapGetLength(ptr noundef %19) #7
  %21 = icmp sgt i32 %20, 0
  br i1 %21, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %35, %16
  tail call void @free(ptr noundef %18) #7
  %22 = load ptr, ptr %0, align 8, !tbaa !9
  %23 = tail call ptr @hashMapDeleteWtoFrAll(ptr noundef %22, ptr noundef nonnull %1) #7
  %24 = load ptr, ptr %23, align 8, !tbaa !11
  br label %40

.lr.ph:                                           ; preds = %16, %35
  %indvars.iv = phi i64 [ %indvars.iv.next, %35 ], [ 0, %16 ]
  %25 = getelementptr inbounds ptr, ptr %18, i64 %indvars.iv
  %26 = load ptr, ptr %25, align 8, !tbaa !5
  %27 = getelementptr inbounds i8, ptr %26, i64 8
  %28 = load ptr, ptr %27, align 8, !tbaa !13
  %29 = tail call i32 @arrayListGetIndex(ptr noundef %28, ptr noundef nonnull %14) #7
  %.not = icmp eq i32 %29, -1
  br i1 %.not, label %35, label %30

30:                                               ; preds = %.lr.ph
  %31 = load ptr, ptr %25, align 8, !tbaa !5
  %32 = getelementptr inbounds i8, ptr %31, i64 8
  %33 = load ptr, ptr %32, align 8, !tbaa !13
  %34 = tail call ptr @arrayListRemoveAtIndexWtFr(ptr noundef %33, i32 noundef %29) #7
  br label %35

35:                                               ; preds = %30, %.lr.ph
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %36 = load ptr, ptr %0, align 8, !tbaa !9
  %37 = tail call i32 @hashMapGetLength(ptr noundef %36) #7
  %38 = sext i32 %37 to i64
  %39 = icmp slt i64 %indvars.iv.next, %38
  br i1 %39, label %.lr.ph, label %._crit_edge, !llvm.loop !15

40:                                               ; preds = %12, %._crit_edge
  %.0 = phi ptr [ %24, %._crit_edge ], [ null, %12 ]
  ret ptr %.0
}

declare ptr @hashMapDeleteWtoFrAll(ptr noundef, ptr noundef) local_unnamed_addr #3

attributes #0 = { mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite) "alloc-family"="malloc" "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 = { 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 #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 = { cold nounwind }
attributes #6 = { noreturn nounwind }
attributes #7 = { 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, !6, i64 0}
!12 = !{!"Entry", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24}
!13 = !{!14, !6, i64 8}
!14 = !{!"DirGraphNode", !6, i64 0, !6, i64 8, !6, i64 16}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass