; LLVM IR from ippeb/ACM-ICPC :: data_structure/binary_search_tree/binary_search_tree.ll (Z6insertiP4node)

; 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"

%class.node = type { i32, ptr, ptr }

; Function Attrs: mustprogress uwtable
define dso_local noundef ptr @_Z6insertiP4node(i32 noundef %0, ptr noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  %6 = load ptr, ptr %5, align 8, !tbaa !9
  %7 = icmp eq ptr %6, null
  br i1 %7, label %8, label %14

8:                                                ; preds = %2
  %9 = call noalias noundef nonnull ptr @_Znwm(i64 noundef 24) #2
  store ptr %9, ptr %5, align 8, !tbaa !9
  %10 = load i32, ptr %4, align 4, !tbaa !5
  %11 = load ptr, ptr %5, align 8, !tbaa !9
  %12 = getelementptr inbounds %class.node, ptr %11, i32 0, i32 0
  store i32 %10, ptr %12, align 8, !tbaa !11
  %13 = load ptr, ptr %5, align 8, !tbaa !9
  store ptr %13, ptr %3, align 8
  br label %38

14:                                               ; preds = %2
  %15 = load i32, ptr %4, align 4, !tbaa !5
  %16 = load ptr, ptr %5, align 8, !tbaa !9
  %17 = getelementptr inbounds %class.node, ptr %16, i32 0, i32 0
  %18 = load i32, ptr %17, align 8, !tbaa !11
  %19 = icmp slt i32 %15, %18
  br i1 %19, label %20, label %28

20:                                               ; preds = %14
  %21 = load i32, ptr %4, align 4, !tbaa !5
  %22 = load ptr, ptr %5, align 8, !tbaa !9
  %23 = getelementptr inbounds %class.node, ptr %22, i32 0, i32 2
  %24 = load ptr, ptr %23, align 8, !tbaa !13
  %25 = call noundef ptr @_Z6insertiP4node(i32 noundef %21, ptr noundef %24)
  %26 = load ptr, ptr %5, align 8, !tbaa !9
  %27 = getelementptr inbounds %class.node, ptr %26, i32 0, i32 2
  store ptr %25, ptr %27, align 8, !tbaa !13
  br label %36

28:                                               ; preds = %14
  %29 = load i32, ptr %4, align 4, !tbaa !5
  %30 = load ptr, ptr %5, align 8, !tbaa !9
  %31 = getelementptr inbounds %class.node, ptr %30, i32 0, i32 1
  %32 = load ptr, ptr %31, align 8, !tbaa !14
  %33 = call noundef ptr @_Z6insertiP4node(i32 noundef %29, ptr noundef %32)
  %34 = load ptr, ptr %5, align 8, !tbaa !9
  %35 = getelementptr inbounds %class.node, ptr %34, i32 0, i32 1
  store ptr %33, ptr %35, align 8, !tbaa !14
  br label %36

36:                                               ; preds = %28, %20
  %37 = load ptr, ptr %5, align 8, !tbaa !9
  store ptr %37, ptr %3, align 8
  br label %38

38:                                               ; preds = %36, %8
  %39 = load ptr, ptr %3, align 8
  ret ptr %39
}

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


; 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 noundef ptr @_Z6insertiP4node(i32 noundef %0, ptr noundef %1) local_unnamed_addr #0 {
  %3 = icmp eq ptr %1, null
  br i1 %3, label %common.ret, label %5

common.ret:                                       ; preds = %2
  %4 = tail call noalias noundef nonnull dereferenceable(24) ptr @_Znwm(i64 noundef 24) #2
  store i32 %0, ptr %4, align 8, !tbaa !5
  br label %common.ret15

5:                                                ; preds = %2
  %6 = load i32, ptr %1, align 8, !tbaa !5
  %7 = icmp sgt i32 %6, %0
  br i1 %7, label %8, label %12

common.ret15:                                     ; preds = %12, %8, %common.ret
  %common.ret15.op = phi ptr [ %4, %common.ret ], [ %1, %8 ], [ %1, %12 ]
  ret ptr %common.ret15.op

8:                                                ; preds = %5
  %9 = getelementptr inbounds i8, ptr %1, i64 16
  %10 = load ptr, ptr %9, align 8, !tbaa !11
  %11 = tail call noundef ptr @_Z6insertiP4node(i32 noundef %0, ptr noundef %10)
  store ptr %11, ptr %9, align 8, !tbaa !11
  br label %common.ret15

12:                                               ; preds = %5
  %13 = getelementptr inbounds i8, ptr %1, i64 8
  %14 = load ptr, ptr %13, align 8, !tbaa !12
  %15 = tail call noundef ptr @_Z6insertiP4node(i32 noundef %0, ptr noundef %14)
  store ptr %15, ptr %13, align 8, !tbaa !12
  br label %common.ret15
}

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znwm(i64 noundef) local_unnamed_addr #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 = { 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 = { 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 16}
!12 = !{!6, !10, i64 8}


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