; LLVM IR from bartobri/data-structures-c :: symbol-table/binary-search-tree-perfect-balancing (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.anon = type { i32, i32 }

@.str = external hidden unnamed_addr constant [14 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #5
  %4 = call i64 @time(ptr noundef null) #5
  %5 = trunc i64 %4 to i32
  call void @srand(i32 noundef %5) #5
  call void @STinit()
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %6

6:                                                ; preds = %20, %0
  %7 = load i32, ptr %2, align 4, !tbaa !5
  %8 = icmp slt i32 %7, 50
  br i1 %8, label %9, label %23

9:                                                ; preds = %6
  %10 = call noalias ptr @malloc(i64 noundef 8) #6
  store ptr %10, ptr %3, align 8, !tbaa !9
  %11 = call i32 @rand() #5
  %12 = srem i32 %11, 100
  %13 = load ptr, ptr %3, align 8, !tbaa !9
  %14 = getelementptr inbounds %struct.anon, ptr %13, i32 0, i32 0
  store i32 %12, ptr %14, align 4, !tbaa !11
  %15 = call i32 @rand() #5
  %16 = srem i32 %15, 1000
  %17 = load ptr, ptr %3, align 8, !tbaa !9
  %18 = getelementptr inbounds %struct.anon, ptr %17, i32 0, i32 1
  store i32 %16, ptr %18, align 4, !tbaa !13
  %19 = load ptr, ptr %3, align 8, !tbaa !9
  call void @STinsert(ptr noundef %19)
  br label %20

20:                                               ; preds = %9
  %21 = load i32, ptr %2, align 4, !tbaa !5
  %22 = add nsw i32 %21, 1
  store i32 %22, ptr %2, align 4, !tbaa !5
  br label %6, !llvm.loop !14

23:                                               ; preds = %6
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %24

24:                                               ; preds = %38, %23
  %25 = load i32, ptr %2, align 4, !tbaa !5
  %26 = icmp slt i32 %25, 100
  br i1 %26, label %27, label %41

27:                                               ; preds = %24
  %28 = load i32, ptr %2, align 4, !tbaa !5
  %29 = call ptr @STsearch(i32 noundef %28)
  store ptr %29, ptr %3, align 8, !tbaa !9
  %30 = load ptr, ptr %3, align 8, !tbaa !9
  %31 = icmp ne ptr %30, null
  br i1 %31, label %32, label %37

32:                                               ; preds = %27
  %33 = load ptr, ptr %3, align 8, !tbaa !9
  %34 = getelementptr inbounds %struct.anon, ptr %33, i32 0, i32 0
  %35 = load i32, ptr %34, align 4, !tbaa !11
  %36 = call i32 (ptr, ...) @printf(ptr noundef @.str, i32 noundef %35)
  br label %37

37:                                               ; preds = %32, %27
  br label %38

38:                                               ; preds = %37
  %39 = load i32, ptr %2, align 4, !tbaa !5
  %40 = add nsw i32 %39, 1
  store i32 %40, ptr %2, align 4, !tbaa !5
  br label %24, !llvm.loop !16

41:                                               ; preds = %24
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %42

42:                                               ; preds = %53, %41
  %43 = load i32, ptr %2, align 4, !tbaa !5
  %44 = icmp slt i32 %43, 100
  br i1 %44, label %45, label %56

45:                                               ; preds = %42
  br label %46

46:                                               ; preds = %50, %45
  %47 = load i32, ptr %2, align 4, !tbaa !5
  %48 = call ptr @STsearch(i32 noundef %47)
  %49 = icmp ne ptr %48, null
  br i1 %49, label %50, label %52

50:                                               ; preds = %46
  %51 = load i32, ptr %2, align 4, !tbaa !5
  call void @STdelete(i32 noundef %51)
  br label %46, !llvm.loop !17

52:                                               ; preds = %46
  br label %53

53:                                               ; preds = %52
  %54 = load i32, ptr %2, align 4, !tbaa !5
  %55 = add nsw i32 %54, 1
  store i32 %55, ptr %2, align 4, !tbaa !5
  br label %42, !llvm.loop !18

56:                                               ; preds = %42
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #5
  ret i32 0
}

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

; Function Attrs: nounwind
declare void @srand(i32 noundef) #2

; Function Attrs: nounwind
declare i64 @time(ptr noundef) #2

declare void @STinit() #3

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #4

; Function Attrs: nounwind
declare i32 @rand() #2

declare void @STinsert(ptr noundef) #3

declare ptr @STsearch(i32 noundef) #3

declare i32 @printf(ptr noundef, ...) #3

declare void @STdelete(i32 noundef) #3

; 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 "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 = { "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 #4 = { 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 #5 = { nounwind }
attributes #6 = { 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 = !{!"", !6, i64 0, !6, i64 4}
!13 = !{!12, !6, i64 4}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}
!16 = distinct !{!16, !15}
!17 = distinct !{!17, !15}
!18 = distinct !{!18, !15}


; 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 = external hidden unnamed_addr constant [14 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = tail call i64 @time(ptr noundef null) #5
  %2 = trunc i64 %1 to i32
  tail call void @srand(i32 noundef %2) #5
  tail call void @STinit() #5
  br label %3

3:                                                ; preds = %0, %3
  %.017 = phi i32 [ 0, %0 ], [ %10, %3 ]
  %4 = tail call noalias dereferenceable_or_null(8) ptr @malloc(i64 noundef 8) #6
  %5 = tail call i32 @rand() #5
  %6 = srem i32 %5, 100
  store i32 %6, ptr %4, align 4, !tbaa !5
  %7 = tail call i32 @rand() #5
  %8 = srem i32 %7, 1000
  %9 = getelementptr inbounds i8, ptr %4, i64 4
  store i32 %8, ptr %9, align 4, !tbaa !10
  tail call void @STinsert(ptr noundef nonnull %4) #5
  %10 = add nuw nsw i32 %.017, 1
  %exitcond.not = icmp eq i32 %10, 50
  br i1 %exitcond.not, label %.preheader16, label %3, !llvm.loop !11

.preheader16:                                     ; preds = %3, %15
  %.118 = phi i32 [ %16, %15 ], [ 0, %3 ]
  %11 = tail call ptr @STsearch(i32 noundef %.118) #5
  %.not14 = icmp eq ptr %11, null
  br i1 %.not14, label %15, label %12

12:                                               ; preds = %.preheader16
  %13 = load i32, ptr %11, align 4, !tbaa !5
  %14 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %13)
  br label %15

15:                                               ; preds = %.preheader16, %12
  %16 = add nuw nsw i32 %.118, 1
  %exitcond21.not = icmp eq i32 %16, 100
  br i1 %exitcond21.not, label %.preheader, label %.preheader16, !llvm.loop !13

.preheader:                                       ; preds = %15, %._crit_edge
  %.220 = phi i32 [ %19, %._crit_edge ], [ 0, %15 ]
  %17 = tail call ptr @STsearch(i32 noundef %.220) #5
  %.not19 = icmp eq ptr %17, null
  br i1 %.not19, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %.preheader, %.lr.ph
  tail call void @STdelete(i32 noundef %.220) #5
  %18 = tail call ptr @STsearch(i32 noundef %.220) #5
  %.not = icmp eq ptr %18, null
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !14

._crit_edge:                                      ; preds = %.lr.ph, %.preheader
  %19 = add nuw nsw i32 %.220, 1
  %exitcond22.not = icmp eq i32 %19, 100
  br i1 %exitcond22.not, label %20, label %.preheader, !llvm.loop !15

20:                                               ; preds = %._crit_edge
  ret i32 0
}

; Function Attrs: nounwind
declare void @srand(i32 noundef) local_unnamed_addr #1

; Function Attrs: nounwind
declare i64 @time(ptr noundef) local_unnamed_addr #1

declare void @STinit() local_unnamed_addr #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 #3

; Function Attrs: nounwind
declare i32 @rand() local_unnamed_addr #1

declare void @STinsert(ptr noundef) local_unnamed_addr #2

declare ptr @STsearch(i32 noundef) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #4

declare void @STdelete(i32 noundef) local_unnamed_addr #2

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 "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 = { "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 = { 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 #4 = { 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 #5 = { nounwind }
attributes #6 = { 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 = !{!"", !7, i64 0, !7, i64 4}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!6, !7, i64 4}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}
!14 = distinct !{!14, !12}
!15 = distinct !{!15, !12}


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