; LLVM IR from TheAlgorithms/C-Plus-Plus :: data_structures/binary_search_tree.ll (Z6InsertP4nodei)

; 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, ptr }

; Function Attrs: mustprogress uwtable
define dso_local void @_Z6InsertP4nodei(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  %7 = load i32, ptr %4, align 4, !tbaa !9
  %8 = load ptr, ptr %3, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.node, ptr %8, i32 0, i32 0
  %10 = load i32, ptr %9, align 8, !tbaa !11
  %11 = icmp slt i32 %7, %10
  br i1 %11, label %12, label %35

12:                                               ; preds = %2
  %13 = load ptr, ptr %3, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.node, ptr %13, i32 0, i32 1
  %15 = load ptr, ptr %14, align 8, !tbaa !13
  %16 = icmp eq ptr %15, null
  br i1 %16, label %17, label %29

17:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %18 = call noalias noundef nonnull ptr @_Znwm(i64 noundef 24) #4
  store ptr %18, ptr %5, align 8, !tbaa !5
  %19 = load i32, ptr %4, align 4, !tbaa !9
  %20 = load ptr, ptr %5, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.node, ptr %20, i32 0, i32 0
  store i32 %19, ptr %21, align 8, !tbaa !11
  %22 = load ptr, ptr %5, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.node, ptr %22, i32 0, i32 1
  store ptr null, ptr %23, align 8, !tbaa !13
  %24 = load ptr, ptr %5, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct.node, ptr %24, i32 0, i32 2
  store ptr null, ptr %25, align 8, !tbaa !14
  %26 = load ptr, ptr %5, align 8, !tbaa !5
  %27 = load ptr, ptr %3, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct.node, ptr %27, i32 0, i32 1
  store ptr %26, ptr %28, align 8, !tbaa !13
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  br label %34

29:                                               ; preds = %12
  %30 = load ptr, ptr %3, align 8, !tbaa !5
  %31 = getelementptr inbounds %struct.node, ptr %30, i32 0, i32 1
  %32 = load ptr, ptr %31, align 8, !tbaa !13
  %33 = load i32, ptr %4, align 4, !tbaa !9
  call void @_Z6InsertP4nodei(ptr noundef %32, i32 noundef %33)
  br label %34

34:                                               ; preds = %29, %17
  br label %58

35:                                               ; preds = %2
  %36 = load ptr, ptr %3, align 8, !tbaa !5
  %37 = getelementptr inbounds %struct.node, ptr %36, i32 0, i32 2
  %38 = load ptr, ptr %37, align 8, !tbaa !14
  %39 = icmp eq ptr %38, null
  br i1 %39, label %40, label %52

40:                                               ; preds = %35
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %41 = call noalias noundef nonnull ptr @_Znwm(i64 noundef 24) #4
  store ptr %41, ptr %6, align 8, !tbaa !5
  %42 = load i32, ptr %4, align 4, !tbaa !9
  %43 = load ptr, ptr %6, align 8, !tbaa !5
  %44 = getelementptr inbounds %struct.node, ptr %43, i32 0, i32 0
  store i32 %42, ptr %44, align 8, !tbaa !11
  %45 = load ptr, ptr %6, align 8, !tbaa !5
  %46 = getelementptr inbounds %struct.node, ptr %45, i32 0, i32 1
  store ptr null, ptr %46, align 8, !tbaa !13
  %47 = load ptr, ptr %6, align 8, !tbaa !5
  %48 = getelementptr inbounds %struct.node, ptr %47, i32 0, i32 2
  store ptr null, ptr %48, align 8, !tbaa !14
  %49 = load ptr, ptr %6, align 8, !tbaa !5
  %50 = load ptr, ptr %3, align 8, !tbaa !5
  %51 = getelementptr inbounds %struct.node, ptr %50, i32 0, i32 2
  store ptr %49, ptr %51, align 8, !tbaa !14
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  br label %57

52:                                               ; preds = %35
  %53 = load ptr, ptr %3, align 8, !tbaa !5
  %54 = getelementptr inbounds %struct.node, ptr %53, i32 0, i32 2
  %55 = load ptr, ptr %54, align 8, !tbaa !14
  %56 = load i32, ptr %4, align 4, !tbaa !9
  call void @_Z6InsertP4nodei(ptr noundef %55, i32 noundef %56)
  br label %57

57:                                               ; preds = %52, %40
  br label %58

58:                                               ; preds = %57, %34
  ret void
}

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

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znwm(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 = { mustprogress 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 = { nobuiltin 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 = { builtin 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"_ZTS4node", !10, i64 0, !6, i64 8, !6, i64 16}
!13 = !{!12, !6, i64 8}
!14 = !{!12, !6, i64 16}


; 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 uwtable
define dso_local void @_Z6InsertP4nodei(ptr nocapture noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  br label %tailrecurse

tailrecurse:                                      ; preds = %tailrecurse.backedge, %2
  %.tr = phi ptr [ %0, %2 ], [ %.tr.be, %tailrecurse.backedge ]
  %3 = load i32, ptr %.tr, align 8, !tbaa !5
  %4 = icmp sgt i32 %3, %1
  br i1 %4, label %5, label %9

5:                                                ; preds = %tailrecurse
  %6 = getelementptr inbounds i8, ptr %.tr, i64 8
  %7 = load ptr, ptr %6, align 8, !tbaa !11
  %8 = icmp eq ptr %7, null
  br i1 %8, label %13, label %tailrecurse.backedge

tailrecurse.backedge:                             ; preds = %5, %9
  %.tr.be = phi ptr [ %7, %5 ], [ %11, %9 ]
  br label %tailrecurse

9:                                                ; preds = %tailrecurse
  %10 = getelementptr inbounds i8, ptr %.tr, i64 16
  %11 = load ptr, ptr %10, align 8, !tbaa !12
  %12 = icmp eq ptr %11, null
  br i1 %12, label %13, label %tailrecurse.backedge

13:                                               ; preds = %9, %5
  %.sink = phi i64 [ 8, %5 ], [ 16, %9 ]
  %14 = getelementptr inbounds i8, ptr %.tr, i64 %.sink
  %15 = tail call noalias noundef nonnull dereferenceable(24) ptr @_Znwm(i64 noundef 24) #3
  store i32 %1, ptr %15, align 8, !tbaa !5
  %16 = getelementptr inbounds i8, ptr %15, i64 8
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %16, i8 0, i64 16, i1 false)
  store ptr %15, ptr %14, align 8, !tbaa !13
  ret void
}

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znwm(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 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 = { nobuiltin 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 #2 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #3 = { builtin 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 = !{!"_ZTS4node", !7, i64 0, !10, i64 8, !10, i64 16}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !10, i64 8}
!12 = !{!6, !10, i64 16}
!13 = !{!10, !10, i64 0}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LICMPass,LoopSimplifyPass,LoopUnrollPass,MemCpyOptPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass