; LLVM IR from bartobri/data-structures-c :: symbol-table/array-ordered (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 [19 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [35 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(i32 noundef 20)
  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, 20
  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
  %24 = call i32 @STcount()
  %25 = call i32 (ptr, ...) @printf(ptr noundef @.str, i32 noundef %24)
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %26

26:                                               ; preds = %42, %23
  %27 = load i32, ptr %2, align 4, !tbaa !5
  %28 = icmp slt i32 %27, 100
  br i1 %28, label %29, label %45

29:                                               ; preds = %26
  br label %30

30:                                               ; preds = %34, %29
  %31 = load i32, ptr %2, align 4, !tbaa !5
  %32 = call ptr @STsearch(i32 noundef %31)
  store ptr %32, ptr %3, align 8, !tbaa !9
  %33 = icmp ne ptr %32, null
  br i1 %33, label %34, label %41

34:                                               ; preds = %30
  %35 = load i32, ptr %2, align 4, !tbaa !5
  %36 = load ptr, ptr %3, align 8, !tbaa !9
  %37 = getelementptr inbounds %struct.anon, ptr %36, i32 0, i32 1
  %38 = load i32, ptr %37, align 4, !tbaa !13
  %39 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i32 noundef %35, i32 noundef %38)
  %40 = load ptr, ptr %3, align 8, !tbaa !9
  call void @STdelete(ptr noundef %40)
  br label %30, !llvm.loop !16

41:                                               ; preds = %30
  br label %42

42:                                               ; preds = %41
  %43 = load i32, ptr %2, align 4, !tbaa !5
  %44 = add nsw i32 %43, 1
  store i32 %44, ptr %2, align 4, !tbaa !5
  br label %26, !llvm.loop !17

45:                                               ; preds = %26
  %46 = call i32 @STcount()
  %47 = call i32 (ptr, ...) @printf(ptr noundef @.str, i32 noundef %46)
  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(i32 noundef) #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 i32 @printf(ptr noundef, ...) #3

declare i32 @STcount() #3

declare ptr @STsearch(i32 noundef) #3

declare void @STdelete(ptr 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}


; 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 [19 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [35 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(i32 noundef 20) #5
  br label %3

3:                                                ; preds = %0, %3
  %.011 = 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 %.011, 1
  %exitcond.not = icmp eq i32 %10, 20
  br i1 %exitcond.not, label %11, label %3, !llvm.loop !11

11:                                               ; preds = %3
  %12 = tail call i32 @STcount() #5
  %13 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %12)
  br label %.preheader

.preheader:                                       ; preds = %11, %._crit_edge
  %.113 = phi i32 [ 0, %11 ], [ %20, %._crit_edge ]
  %14 = tail call ptr @STsearch(i32 noundef %.113) #5
  %.not12 = icmp eq ptr %14, null
  br i1 %.not12, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %.preheader, %.lr.ph
  %15 = phi ptr [ %19, %.lr.ph ], [ %14, %.preheader ]
  %16 = getelementptr inbounds i8, ptr %15, i64 4
  %17 = load i32, ptr %16, align 4, !tbaa !10
  %18 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %.113, i32 noundef %17)
  tail call void @STdelete(ptr noundef nonnull %15) #5
  %19 = tail call ptr @STsearch(i32 noundef %.113) #5
  %.not = icmp eq ptr %19, null
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !13

._crit_edge:                                      ; preds = %.lr.ph, %.preheader
  %20 = add nuw nsw i32 %.113, 1
  %exitcond14.not = icmp eq i32 %20, 100
  br i1 %exitcond14.not, label %21, label %.preheader, !llvm.loop !14

21:                                               ; preds = %._crit_edge
  %22 = tail call i32 @STcount() #5
  %23 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %22)
  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(i32 noundef) 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

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

declare i32 @STcount() local_unnamed_addr #2

declare ptr @STsearch(i32 noundef) local_unnamed_addr #2

declare void @STdelete(ptr 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}


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