; LLVM IR from Water-Melon/Melon :: t (event)

; 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"

@stderr = external global ptr, align 8
@.str = external hidden unnamed_addr constant [20 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [19 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [24 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local i32 @main(i32 noundef %0, ptr noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  store i32 0, ptr %3, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  %8 = call ptr @mln_event_new()
  store ptr %8, ptr %6, align 8, !tbaa !9
  %9 = load ptr, ptr %6, align 8, !tbaa !9
  %10 = icmp eq ptr %9, null
  br i1 %10, label %11, label %14

11:                                               ; preds = %2
  %12 = load ptr, ptr @stderr, align 8, !tbaa !9
  %13 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %12, ptr noundef @.str) #4
  store i32 -1, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %31

14:                                               ; preds = %2
  %15 = load ptr, ptr %6, align 8, !tbaa !9
  %16 = call ptr @mln_event_timer_set(ptr noundef %15, i32 noundef 1000, ptr noundef null, ptr noundef @timer_handler)
  %17 = icmp ult ptr %16, null
  br i1 %17, label %18, label %21

18:                                               ; preds = %14
  %19 = load ptr, ptr @stderr, align 8, !tbaa !9
  %20 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %19, ptr noundef @.str.1) #4
  store i32 -1, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %31

21:                                               ; preds = %14
  %22 = load ptr, ptr %6, align 8, !tbaa !9
  %23 = call i32 @mln_event_fd_set(ptr noundef %22, i32 noundef 1, i32 noundef 2, i32 noundef -1, ptr noundef null, ptr noundef @mln_fd_write)
  %24 = icmp slt i32 %23, 0
  br i1 %24, label %25, label %28

25:                                               ; preds = %21
  %26 = load ptr, ptr @stderr, align 8, !tbaa !9
  %27 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %26, ptr noundef @.str.2) #4
  store i32 -1, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %31

28:                                               ; preds = %21
  %29 = load ptr, ptr %6, align 8, !tbaa !9
  call void @mln_event_dispatch(ptr noundef %29)
  %30 = load ptr, ptr %6, align 8, !tbaa !9
  call void @mln_event_free(ptr noundef %30)
  store i32 0, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %31

31:                                               ; preds = %28, %25, %18, %11
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  %32 = load i32, ptr %3, align 4
  ret i32 %32
}

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

declare ptr @mln_event_new() #2

; Function Attrs: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #3

declare ptr @mln_event_timer_set(ptr noundef, i32 noundef, ptr noundef, ptr noundef) #2

; Function Attrs: nounwind uwtable
declare hidden void @timer_handler(ptr noundef, ptr noundef) #0

declare i32 @mln_event_fd_set(ptr noundef, i32 noundef, i32 noundef, i32 noundef, ptr noundef, ptr noundef) #2

; Function Attrs: nounwind uwtable
declare hidden void @mln_fd_write(ptr noundef, i32 noundef, ptr noundef) #0

declare void @mln_event_dispatch(ptr noundef) #2

declare void @mln_event_free(ptr 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 = { 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 = { "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 "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 }

!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}


; 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"

@stderr = external local_unnamed_addr global ptr, align 8
@.str = external hidden unnamed_addr constant [20 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [24 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 1) i32 @main(i32 noundef %0, ptr nocapture noundef readnone %1) local_unnamed_addr #0 {
  %3 = tail call ptr @mln_event_new() #3
  %4 = icmp eq ptr %3, null
  br i1 %4, label %5, label %8

5:                                                ; preds = %2
  %6 = load ptr, ptr @stderr, align 8, !tbaa !5
  %7 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %6, ptr noundef nonnull @.str) #4
  br label %16

8:                                                ; preds = %2
  %9 = tail call ptr @mln_event_timer_set(ptr noundef nonnull %3, i32 noundef 1000, ptr noundef null, ptr noundef nonnull @timer_handler) #3
  %10 = tail call i32 @mln_event_fd_set(ptr noundef nonnull %3, i32 noundef 1, i32 noundef 2, i32 noundef -1, ptr noundef null, ptr noundef nonnull @mln_fd_write) #3
  %11 = icmp slt i32 %10, 0
  br i1 %11, label %12, label %15

12:                                               ; preds = %8
  %13 = load ptr, ptr @stderr, align 8, !tbaa !5
  %14 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %13, ptr noundef nonnull @.str.2) #4
  br label %16

15:                                               ; preds = %8
  tail call void @mln_event_dispatch(ptr noundef nonnull %3) #3
  tail call void @mln_event_free(ptr noundef nonnull %3) #3
  br label %16

16:                                               ; preds = %15, %12, %5
  %.0 = phi i32 [ -1, %5 ], [ -1, %12 ], [ 0, %15 ]
  ret i32 %.0
}

declare ptr @mln_event_new() local_unnamed_addr #1

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #2

declare ptr @mln_event_timer_set(ptr noundef, i32 noundef, ptr noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare hidden void @timer_handler(ptr noundef, ptr noundef) #0

declare i32 @mln_event_fd_set(ptr noundef, i32 noundef, i32 noundef, i32 noundef, ptr noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare hidden void @mln_fd_write(ptr noundef, i32 noundef, ptr noundef) #0

declare void @mln_event_dispatch(ptr noundef) local_unnamed_addr #1

declare void @mln_event_free(ptr noundef) local_unnamed_addr #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 = { "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 = { 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 #3 = { nounwind }
attributes #4 = { cold nounwind }

!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"}


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