; LLVM IR from TyrantLucifer/DataStructure :: Tree (BTree)

; 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, i32, i32, ptr, ptr, ptr }

; Function Attrs: nounwind uwtable
define dso_local ptr @initNode(i32 noundef %0) #0 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  store i32 %0, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  %5 = call noalias ptr @malloc(i64 noundef 40) #4
  store ptr %5, ptr %3, align 8, !tbaa !9
  %6 = load i32, ptr %2, align 4, !tbaa !5
  %7 = load ptr, ptr %3, align 8, !tbaa !9
  %8 = getelementptr inbounds %struct.Node, ptr %7, i32 0, i32 0
  store i32 %6, ptr %8, align 8, !tbaa !11
  %9 = load ptr, ptr %3, align 8, !tbaa !9
  %10 = getelementptr inbounds %struct.Node, ptr %9, i32 0, i32 1
  store i32 0, ptr %10, align 4, !tbaa !13
  %11 = load ptr, ptr %3, align 8, !tbaa !9
  %12 = getelementptr inbounds %struct.Node, ptr %11, i32 0, i32 2
  store i32 0, ptr %12, align 8, !tbaa !14
  %13 = load i32, ptr %2, align 4, !tbaa !5
  %14 = add nsw i32 %13, 1
  %15 = sext i32 %14 to i64
  %16 = mul i64 4, %15
  %17 = call noalias ptr @malloc(i64 noundef %16) #4
  %18 = load ptr, ptr %3, align 8, !tbaa !9
  %19 = getelementptr inbounds %struct.Node, ptr %18, i32 0, i32 3
  store ptr %17, ptr %19, align 8, !tbaa !15
  %20 = load i32, ptr %2, align 4, !tbaa !5
  %21 = add nsw i32 %20, 1
  %22 = sext i32 %21 to i64
  %23 = mul i64 8, %22
  %24 = call noalias ptr @malloc(i64 noundef %23) #4
  %25 = load ptr, ptr %3, align 8, !tbaa !9
  %26 = getelementptr inbounds %struct.Node, ptr %25, i32 0, i32 4
  store ptr %24, ptr %26, align 8, !tbaa !16
  %27 = load ptr, ptr %3, align 8, !tbaa !9
  %28 = getelementptr inbounds %struct.Node, ptr %27, i32 0, i32 5
  store ptr null, ptr %28, align 8, !tbaa !17
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  store i32 0, ptr %4, align 4, !tbaa !5
  br label %29

29:                                               ; preds = %46, %1
  %30 = load i32, ptr %4, align 4, !tbaa !5
  %31 = load i32, ptr %2, align 4, !tbaa !5
  %32 = icmp slt i32 %30, %31
  br i1 %32, label %33, label %49

33:                                               ; preds = %29
  %34 = load ptr, ptr %3, align 8, !tbaa !9
  %35 = getelementptr inbounds %struct.Node, ptr %34, i32 0, i32 3
  %36 = load ptr, ptr %35, align 8, !tbaa !15
  %37 = load i32, ptr %4, align 4, !tbaa !5
  %38 = sext i32 %37 to i64
  %39 = getelementptr inbounds i32, ptr %36, i64 %38
  store i32 0, ptr %39, align 4, !tbaa !5
  %40 = load ptr, ptr %3, align 8, !tbaa !9
  %41 = getelementptr inbounds %struct.Node, ptr %40, i32 0, i32 4
  %42 = load ptr, ptr %41, align 8, !tbaa !16
  %43 = load i32, ptr %4, align 4, !tbaa !5
  %44 = sext i32 %43 to i64
  %45 = getelementptr inbounds ptr, ptr %42, i64 %44
  store ptr null, ptr %45, align 8, !tbaa !9
  br label %46

46:                                               ; preds = %33
  %47 = load i32, ptr %4, align 4, !tbaa !5
  %48 = add nsw i32 %47, 1
  store i32 %48, ptr %4, align 4, !tbaa !5
  br label %29, !llvm.loop !18

49:                                               ; preds = %29
  %50 = load ptr, ptr %3, align 8, !tbaa !9
  %51 = getelementptr inbounds %struct.Node, ptr %50, i32 0, i32 3
  %52 = load ptr, ptr %51, align 8, !tbaa !15
  %53 = load i32, ptr %4, align 4, !tbaa !5
  %54 = sext i32 %53 to i64
  %55 = getelementptr inbounds i32, ptr %52, i64 %54
  store i32 0, ptr %55, align 4, !tbaa !5
  %56 = load ptr, ptr %3, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  ret ptr %56
}

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

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #2

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

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 = { nounwind allocsize(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 }
attributes #4 = { nounwind allocsize(0) }

!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 = !{!12, !6, i64 0}
!12 = !{!"Node", !6, i64 0, !6, i64 4, !6, i64 8, !10, i64 16, !10, i64 24, !10, i64 32}
!13 = !{!12, !6, i64 4}
!14 = !{!12, !6, i64 8}
!15 = !{!12, !10, i64 16}
!16 = !{!12, !10, i64 24}
!17 = !{!12, !10, i64 32}
!18 = distinct !{!18, !19}
!19 = !{!"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: mustprogress nofree nounwind willreturn memory(write, argmem: none, inaccessiblemem: readwrite) uwtable
define dso_local noalias noundef ptr @initNode(i32 noundef %0) local_unnamed_addr #0 {
  %2 = tail call noalias dereferenceable_or_null(40) ptr @malloc(i64 noundef 40) #3
  store i32 %0, ptr %2, align 8, !tbaa !5
  %3 = getelementptr inbounds i8, ptr %2, i64 4
  store i32 0, ptr %3, align 4, !tbaa !11
  %4 = getelementptr inbounds i8, ptr %2, i64 8
  store i32 0, ptr %4, align 8, !tbaa !12
  %5 = add nsw i32 %0, 1
  %6 = sext i32 %5 to i64
  %7 = shl nsw i64 %6, 2
  %8 = tail call noalias ptr @malloc(i64 noundef %7) #3
  %9 = getelementptr inbounds i8, ptr %2, i64 16
  store ptr %8, ptr %9, align 8, !tbaa !13
  %10 = shl nsw i64 %6, 3
  %11 = tail call noalias ptr @malloc(i64 noundef %10) #3
  %12 = getelementptr inbounds i8, ptr %2, i64 24
  store ptr %11, ptr %12, align 8, !tbaa !14
  %13 = getelementptr inbounds i8, ptr %2, i64 32
  store ptr null, ptr %13, align 8, !tbaa !15
  %14 = icmp sgt i32 %0, 0
  br i1 %14, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %1
  %15 = zext nneg i32 %0 to i64
  %16 = shl nuw nsw i64 %15, 2
  tail call void @llvm.memset.p0.i64(ptr align 4 %8, i8 0, i64 %16, i1 false), !tbaa !16
  %17 = shl nuw nsw i64 %15, 3
  tail call void @llvm.memset.p0.i64(ptr align 8 %11, i8 0, i64 %17, i1 false), !tbaa !17
  %18 = zext nneg i32 %0 to i64
  br label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph.preheader, %1
  %.0.lcssa = phi i64 [ 0, %1 ], [ %18, %.lr.ph.preheader ]
  %19 = getelementptr inbounds i32, ptr %8, i64 %.0.lcssa
  store i32 0, ptr %19, align 4, !tbaa !16
  ret ptr %2
}

; Function Attrs: mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr #1

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #2

attributes #0 = { mustprogress nofree nounwind willreturn memory(write, argmem: none, inaccessiblemem: readwrite) 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 nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(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 #2 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #3 = { nounwind allocsize(0) }

!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, !7, i64 4, !7, i64 8, !10, i64 16, !10, i64 24, !10, i64 32}
!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 4}
!12 = !{!6, !7, i64 8}
!13 = !{!6, !10, i64 16}
!14 = !{!6, !10, i64 24}
!15 = !{!6, !10, i64 32}
!16 = !{!7, !7, i64 0}
!17 = !{!10, !10, i64 0}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LCSSAPass,LoopIdiomRecognizePass,LoopRotatePass,LoopSimplifyPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass