; LLVM IR from wgtdkp/wgtcc :: test/data-structure (tree)

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

; Function Attrs: nounwind uwtable
define dso_local ptr @tree_insert(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  %6 = load ptr, ptr %4, align 8, !tbaa !5
  %7 = icmp eq ptr %6, null
  br i1 %7, label %8, label %18

8:                                                ; preds = %2
  %9 = call noalias ptr @malloc(i64 noundef 24) #2
  store ptr %9, ptr %4, align 8, !tbaa !5
  %10 = load i32, ptr %5, align 4, !tbaa !9
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.tree, ptr %11, i32 0, i32 0
  store i32 %10, ptr %12, align 8, !tbaa !11
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.tree, ptr %13, i32 0, i32 1
  store ptr null, ptr %14, align 8, !tbaa !13
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.tree, ptr %15, i32 0, i32 2
  store ptr null, ptr %16, align 8, !tbaa !14
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  store ptr %17, ptr %3, align 8
  br label %49

18:                                               ; preds = %2
  %19 = load i32, ptr %5, align 4, !tbaa !9
  %20 = load ptr, ptr %4, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.tree, ptr %20, i32 0, i32 0
  %22 = load i32, ptr %21, align 8, !tbaa !11
  %23 = icmp slt i32 %19, %22
  br i1 %23, label %24, label %32

24:                                               ; preds = %18
  %25 = load ptr, ptr %4, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.tree, ptr %25, i32 0, i32 1
  %27 = load ptr, ptr %26, align 8, !tbaa !13
  %28 = load i32, ptr %5, align 4, !tbaa !9
  %29 = call ptr @tree_insert(ptr noundef %27, i32 noundef %28)
  %30 = load ptr, ptr %4, align 8, !tbaa !5
  %31 = getelementptr inbounds %struct.tree, ptr %30, i32 0, i32 1
  store ptr %29, ptr %31, align 8, !tbaa !13
  br label %47

32:                                               ; preds = %18
  %33 = load i32, ptr %5, align 4, !tbaa !9
  %34 = load ptr, ptr %4, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct.tree, ptr %34, i32 0, i32 0
  %36 = load i32, ptr %35, align 8, !tbaa !11
  %37 = icmp sgt i32 %33, %36
  br i1 %37, label %38, label %46

38:                                               ; preds = %32
  %39 = load ptr, ptr %4, align 8, !tbaa !5
  %40 = getelementptr inbounds %struct.tree, ptr %39, i32 0, i32 2
  %41 = load ptr, ptr %40, align 8, !tbaa !14
  %42 = load i32, ptr %5, align 4, !tbaa !9
  %43 = call ptr @tree_insert(ptr noundef %41, i32 noundef %42)
  %44 = load ptr, ptr %4, align 8, !tbaa !5
  %45 = getelementptr inbounds %struct.tree, ptr %44, i32 0, i32 2
  store ptr %43, ptr %45, align 8, !tbaa !14
  br label %46

46:                                               ; preds = %38, %32
  br label %47

47:                                               ; preds = %46, %24
  %48 = load ptr, ptr %4, align 8, !tbaa !5
  store ptr %48, ptr %3, align 8
  br label %49

49:                                               ; preds = %47, %8
  %50 = load ptr, ptr %3, align 8
  ret ptr %50
}

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #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 = { 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 #2 = { 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 = !{!"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 = !{!12, !10, i64 0}
!12 = !{!"tree", !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: nofree nounwind uwtable
define dso_local noundef ptr @tree_insert(ptr noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp eq ptr %0, null
  br i1 %3, label %4, label %7

4:                                                ; preds = %2
  %5 = tail call noalias dereferenceable_or_null(24) ptr @malloc(i64 noundef 24) #3
  store i32 %1, ptr %5, align 8, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %5, i64 8
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %6, i8 0, i64 16, i1 false)
  br label %common.ret20

7:                                                ; preds = %2
  %8 = load i32, ptr %0, align 8, !tbaa !5
  %9 = icmp sgt i32 %8, %1
  br i1 %9, label %10, label %14

common.ret20:                                     ; preds = %14, %4, %16, %10
  %common.ret20.op = phi ptr [ %0, %10 ], [ %0, %16 ], [ %5, %4 ], [ %0, %14 ]
  ret ptr %common.ret20.op

10:                                               ; preds = %7
  %11 = getelementptr inbounds i8, ptr %0, i64 8
  %12 = load ptr, ptr %11, align 8, !tbaa !11
  %13 = tail call ptr @tree_insert(ptr noundef %12, i32 noundef %1)
  store ptr %13, ptr %11, align 8, !tbaa !11
  br label %common.ret20

14:                                               ; preds = %7
  %15 = icmp slt i32 %8, %1
  br i1 %15, label %16, label %common.ret20

16:                                               ; preds = %14
  %17 = getelementptr inbounds i8, ptr %0, i64 16
  %18 = load ptr, ptr %17, align 8, !tbaa !12
  %19 = tail call ptr @tree_insert(ptr noundef %18, i32 noundef %1)
  store ptr %19, ptr %17, align 8, !tbaa !12
  br label %common.ret20
}

; 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 = { 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" }
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 = !{!"tree", !7, i64 0, !10, i64 8, !10, 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, !10, i64 8}
!12 = !{!6, !10, i64 16}


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