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

; 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.mln_iothread_s = type { %union.pthread_mutex_t, %union.pthread_mutex_t, i32, i32, ptr, ptr, ptr, ptr, ptr, ptr, i32, ptr, ptr }
%union.pthread_mutex_t = type { %struct.__pthread_mutex_s }
%struct.__pthread_mutex_s = type { i32, i32, i32, i32, i32, i16, i16, %struct.__pthread_internal_list }
%struct.__pthread_internal_list = type { ptr, ptr }

@stderr = external global ptr, align 8
@.str = external hidden unnamed_addr constant [22 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [6 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 i32, align 4
  %4 = alloca %struct.mln_iothread_s, align 8
  %5 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  call void @llvm.lifetime.start.p0(i64 160, ptr %4) #4
  %6 = call i32 @mln_iothread_init(ptr noundef %4, i32 noundef 1, ptr noundef @entry, ptr noundef %4, ptr noundef @msg_handler)
  %7 = icmp slt i32 %6, 0
  br i1 %7, label %8, label %11

8:                                                ; preds = %0
  %9 = load ptr, ptr @stderr, align 8, !tbaa !5
  %10 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %9, ptr noundef @.str) #4
  store i32 -1, ptr %1, align 4
  store i32 1, ptr %5, align 4
  br label %35

11:                                               ; preds = %0
  store i32 0, ptr %2, align 4, !tbaa !9
  br label %12

12:                                               ; preds = %28, %11
  %13 = load i32, ptr %2, align 4, !tbaa !9
  %14 = icmp slt i32 %13, 1000
  br i1 %14, label %15, label %31

15:                                               ; preds = %12
  %16 = load i32, ptr %2, align 4, !tbaa !9
  %17 = call i32 @mln_iothread_send(ptr noundef %4, i32 noundef %16, ptr noundef null, i32 noundef 0, i32 noundef 1)
  store i32 %17, ptr %3, align 4, !tbaa !9
  %18 = icmp slt i32 %17, 0
  br i1 %18, label %19, label %22

19:                                               ; preds = %15
  %20 = load ptr, ptr @stderr, align 8, !tbaa !5
  %21 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %20, ptr noundef @.str.1) #4
  store i32 -1, ptr %1, align 4
  store i32 1, ptr %5, align 4
  br label %35

22:                                               ; preds = %15
  %23 = load i32, ptr %3, align 4, !tbaa !9
  %24 = icmp sgt i32 %23, 0
  br i1 %24, label %25, label %26

25:                                               ; preds = %22
  br label %28

26:                                               ; preds = %22
  br label %27

27:                                               ; preds = %26
  br label %28

28:                                               ; preds = %27, %25
  %29 = load i32, ptr %2, align 4, !tbaa !9
  %30 = add nsw i32 %29, 1
  store i32 %30, ptr %2, align 4, !tbaa !9
  br label %12, !llvm.loop !11

31:                                               ; preds = %12
  %32 = call i32 @sleep(i32 noundef 1)
  call void @mln_iothread_destroy(ptr noundef %4)
  %33 = call i32 @sleep(i32 noundef 3)
  %34 = call i32 (ptr, ...) @printf(ptr noundef @.str.2)
  store i32 0, ptr %1, align 4
  store i32 1, ptr %5, align 4
  br label %35

35:                                               ; preds = %31, %19, %8
  call void @llvm.lifetime.end.p0(i64 160, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #4
  %36 = load i32, ptr %1, align 4
  ret i32 %36
}

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

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

; Function Attrs: nounwind uwtable
declare hidden ptr @entry(ptr noundef) #0

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

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

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

declare i32 @sleep(i32 noundef) #2

declare void @mln_iothread_destroy(ptr noundef) #2

declare i32 @printf(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 = !{!"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 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; 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"

%struct.mln_iothread_s = type { %union.pthread_mutex_t, %union.pthread_mutex_t, i32, i32, ptr, ptr, ptr, ptr, ptr, ptr, i32, ptr, ptr }
%union.pthread_mutex_t = type { %struct.__pthread_mutex_s }
%struct.__pthread_mutex_s = type { i32, i32, i32, i32, i32, i16, i16, %struct.__pthread_internal_list }
%struct.__pthread_internal_list = type { ptr, ptr }

@stderr = external local_unnamed_addr global ptr, align 8
@.str = external hidden unnamed_addr constant [22 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [6 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 1) i32 @main() local_unnamed_addr #0 {
  %1 = alloca %struct.mln_iothread_s, align 8
  call void @llvm.lifetime.start.p0(i64 160, ptr nonnull %1) #4
  %2 = call i32 @mln_iothread_init(ptr noundef nonnull %1, i32 noundef 1, ptr noundef nonnull @entry, ptr noundef nonnull %1, ptr noundef nonnull @msg_handler) #4
  %3 = icmp slt i32 %2, 0
  br i1 %3, label %4, label %.preheader

4:                                                ; preds = %0
  %5 = load ptr, ptr @stderr, align 8, !tbaa !5
  %6 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %5, ptr noundef nonnull @.str) #5
  br label %18

7:                                                ; preds = %.preheader
  %8 = add nuw nsw i32 %.056, 1
  %exitcond.not = icmp eq i32 %8, 1000
  br i1 %exitcond.not, label %14, label %.preheader, !llvm.loop !9

.preheader:                                       ; preds = %0, %7
  %.056 = phi i32 [ %8, %7 ], [ 0, %0 ]
  %9 = call i32 @mln_iothread_send(ptr noundef nonnull %1, i32 noundef %.056, ptr noundef null, i32 noundef 0, i32 noundef 1) #4
  %10 = icmp slt i32 %9, 0
  br i1 %10, label %11, label %7

11:                                               ; preds = %.preheader
  %12 = load ptr, ptr @stderr, align 8, !tbaa !5
  %13 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %12, ptr noundef nonnull @.str.1) #5
  br label %18

14:                                               ; preds = %7
  %15 = call i32 @sleep(i32 noundef 1) #4
  call void @mln_iothread_destroy(ptr noundef nonnull %1) #4
  %16 = call i32 @sleep(i32 noundef 3) #4
  %17 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2)
  br label %18

18:                                               ; preds = %14, %11, %4
  %.0 = phi i32 [ -1, %4 ], [ -1, %11 ], [ 0, %14 ]
  call void @llvm.lifetime.end.p0(i64 160, ptr nonnull %1) #4
  ret i32 %.0
}

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

declare i32 @mln_iothread_init(ptr noundef, i32 noundef, ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
declare hidden ptr @entry(ptr noundef) #0

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

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

declare i32 @mln_iothread_send(ptr noundef, i32 noundef, ptr noundef, i32 noundef, i32 noundef) local_unnamed_addr #2

declare i32 @sleep(i32 noundef) local_unnamed_addr #2

declare void @mln_iothread_destroy(ptr noundef) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

; Function Attrs: mustprogress 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 = { mustprogress 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 = { 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 #4 = { nounwind }
attributes #5 = { 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"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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