; LLVM IR from KishanBGajera/2024-366-Days-Of-DSA :: Data Structures/Non-Linear/Tree/N-ary Tree/C (main)

; 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.Node = type { i32, ptr, i32 }

@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [5 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

declare i32 @printf(ptr noundef, ...) #1

; Function Attrs: nounwind uwtable
define dso_local void @printTree(ptr noundef %0, i32 noundef %1) #2 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  %7 = load ptr, ptr %3, align 8, !tbaa !5
  %8 = icmp ne ptr %7, null
  br i1 %8, label %10, label %9

9:                                                ; preds = %2
  br label %47

10:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %18, %10
  %12 = load i32, ptr %5, align 4, !tbaa !9
  %13 = load i32, ptr %4, align 4, !tbaa !9
  %14 = icmp slt i32 %12, %13
  br i1 %14, label %16, label %15

15:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %21

16:                                               ; preds = %11
  %17 = call i32 (ptr, ...) @printf(ptr noundef @.str.1)
  br label %18

18:                                               ; preds = %16
  %19 = load i32, ptr %5, align 4, !tbaa !9
  %20 = add nsw i32 %19, 1
  store i32 %20, ptr %5, align 4, !tbaa !9
  br label %11, !llvm.loop !11

21:                                               ; preds = %15
  %22 = load ptr, ptr %3, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.Node, ptr %22, i32 0, i32 0
  %24 = load i32, ptr %23, align 8, !tbaa !13
  %25 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %24)
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  store i32 0, ptr %6, align 4, !tbaa !9
  br label %26

26:                                               ; preds = %43, %21
  %27 = load i32, ptr %6, align 4, !tbaa !9
  %28 = load ptr, ptr %3, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.Node, ptr %28, i32 0, i32 2
  %30 = load i32, ptr %29, align 8, !tbaa !15
  %31 = icmp slt i32 %27, %30
  br i1 %31, label %33, label %32

32:                                               ; preds = %26
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  br label %46

33:                                               ; preds = %26
  %34 = load ptr, ptr %3, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct.Node, ptr %34, i32 0, i32 1
  %36 = load ptr, ptr %35, align 8, !tbaa !16
  %37 = load i32, ptr %6, align 4, !tbaa !9
  %38 = sext i32 %37 to i64
  %39 = getelementptr inbounds ptr, ptr %36, i64 %38
  %40 = load ptr, ptr %39, align 8, !tbaa !5
  %41 = load i32, ptr %4, align 4, !tbaa !9
  %42 = add nsw i32 %41, 1
  call void @printTree(ptr noundef %40, i32 noundef %42)
  br label %43

43:                                               ; preds = %33
  %44 = load i32, ptr %6, align 4, !tbaa !9
  %45 = add nsw i32 %44, 1
  store i32 %45, ptr %6, align 4, !tbaa !9
  br label %26, !llvm.loop !17

46:                                               ; preds = %32
  br label %47

47:                                               ; preds = %46, %9
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { "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 = { 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 #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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!14, !10, i64 0}
!14 = !{!"Node", !10, i64 0, !6, i64 8, !10, i64 16}
!15 = !{!14, !10, i64 16}
!16 = !{!14, !6, i64 8}
!17 = distinct !{!17, !12}


; 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 [2 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [5 x i8], align 1

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

; Function Attrs: nofree nounwind uwtable
define dso_local void @printTree(ptr noundef readonly %0, i32 noundef %1) local_unnamed_addr #1 {
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %.loopexit, label %.preheader

.preheader:                                       ; preds = %2
  %3 = icmp sgt i32 %1, 0
  br i1 %3, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %.preheader
  %4 = load i32, ptr %0, align 8, !tbaa !5
  %5 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %4)
  %6 = getelementptr inbounds i8, ptr %0, i64 16
  %7 = load i32, ptr %6, align 8, !tbaa !11
  %8 = icmp sgt i32 %7, 0
  br i1 %8, label %.lr.ph16, label %.loopexit

.lr.ph16:                                         ; preds = %._crit_edge
  %9 = getelementptr inbounds i8, ptr %0, i64 8
  %10 = add nsw i32 %1, 1
  br label %13

.lr.ph:                                           ; preds = %.preheader, %.lr.ph
  %.01013 = phi i32 [ %12, %.lr.ph ], [ 0, %.preheader ]
  %11 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1)
  %12 = add nuw nsw i32 %.01013, 1
  %exitcond.not = icmp eq i32 %12, %1
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !12

13:                                               ; preds = %.lr.ph16, %13
  %indvars.iv = phi i64 [ 0, %.lr.ph16 ], [ %indvars.iv.next, %13 ]
  %14 = load ptr, ptr %9, align 8, !tbaa !14
  %15 = getelementptr inbounds ptr, ptr %14, i64 %indvars.iv
  %16 = load ptr, ptr %15, align 8, !tbaa !15
  tail call void @printTree(ptr noundef %16, i32 noundef %10)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %17 = load i32, ptr %6, align 8, !tbaa !11
  %18 = sext i32 %17 to i64
  %19 = icmp slt i64 %indvars.iv.next, %18
  br i1 %19, label %13, label %.loopexit, !llvm.loop !16

.loopexit:                                        ; preds = %13, %._crit_edge, %2
  ret void
}

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 = { nofree 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)"}
!5 = !{!6, !7, i64 0}
!6 = !{!"Node", !7, i64 0, !10, i64 8, !7, i64 16}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !7, i64 16}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}
!14 = !{!6, !10, i64 8}
!15 = !{!10, !10, i64 0}
!16 = distinct !{!16, !13}


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