; LLVM IR from Water-Melon/Melon :: src (mln_conf)

; 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_conf_hook_s = type { ptr, ptr, ptr, ptr }

@g_conf_hook_head = external hidden global ptr, align 8

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @mln_conf_load() #1

; Function Attrs: nounwind uwtable
declare dso_local void @mln_conf_free() #1

; Function Attrs: nounwind uwtable
define dso_local i32 @mln_conf_reload() #1 {
  %1 = alloca i32, align 4
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  call void @mln_conf_free()
  %4 = call i32 @mln_conf_load()
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #2
  %5 = load ptr, ptr @g_conf_hook_head, align 8, !tbaa !5
  store ptr %5, ptr %2, align 8, !tbaa !5
  br label %6

6:                                                ; preds = %25, %0
  %7 = load ptr, ptr %2, align 8, !tbaa !5
  %8 = icmp ne ptr %7, null
  br i1 %8, label %9, label %29

9:                                                ; preds = %6
  %10 = load ptr, ptr %2, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.mln_conf_hook_s, ptr %10, i32 0, i32 0
  %12 = load ptr, ptr %11, align 8, !tbaa !9
  %13 = icmp ne ptr %12, null
  br i1 %13, label %14, label %24

14:                                               ; preds = %9
  %15 = load ptr, ptr %2, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.mln_conf_hook_s, ptr %15, i32 0, i32 0
  %17 = load ptr, ptr %16, align 8, !tbaa !9
  %18 = load ptr, ptr %2, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.mln_conf_hook_s, ptr %18, i32 0, i32 1
  %20 = load ptr, ptr %19, align 8, !tbaa !11
  %21 = call i32 %17(ptr noundef %20)
  %22 = icmp slt i32 %21, 0
  br i1 %22, label %23, label %24

23:                                               ; preds = %14
  store i32 -1, ptr %1, align 4
  store i32 1, ptr %3, align 4
  br label %30

24:                                               ; preds = %14, %9
  br label %25

25:                                               ; preds = %24
  %26 = load ptr, ptr %2, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.mln_conf_hook_s, ptr %26, i32 0, i32 3
  %28 = load ptr, ptr %27, align 8, !tbaa !12
  store ptr %28, ptr %2, align 8, !tbaa !5
  br label %6, !llvm.loop !13

29:                                               ; preds = %6
  store i32 0, ptr %1, align 4
  store i32 1, ptr %3, align 4
  br label %30

30:                                               ; preds = %29, %23
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #2
  %31 = load i32, ptr %1, align 4
  ret i32 %31
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { 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, !6, i64 0}
!10 = !{!"mln_conf_hook_s", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24}
!11 = !{!10, !6, i64 8}
!12 = !{!10, !6, i64 24}
!13 = distinct !{!13, !14}
!14 = !{!"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"

@g_conf_hook_head = external hidden local_unnamed_addr global ptr, align 8

; Function Attrs: nounwind uwtable
declare dso_local i32 @mln_conf_load() local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local void @mln_conf_free() local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 1) i32 @mln_conf_reload() local_unnamed_addr #0 {
  tail call void @mln_conf_free()
  %1 = tail call i32 @mln_conf_load()
  %.08 = load ptr, ptr @g_conf_hook_head, align 8, !tbaa !5
  %.not9 = icmp eq ptr %.08, null
  br i1 %.not9, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %0, %8
  %.010 = phi ptr [ %.0, %8 ], [ %.08, %0 ]
  %2 = load ptr, ptr %.010, align 8, !tbaa !9
  %.not7 = icmp eq ptr %2, null
  br i1 %.not7, label %8, label %3

3:                                                ; preds = %.lr.ph
  %4 = getelementptr inbounds i8, ptr %.010, i64 8
  %5 = load ptr, ptr %4, align 8, !tbaa !11
  %6 = tail call i32 %2(ptr noundef %5) #1
  %7 = icmp slt i32 %6, 0
  br i1 %7, label %._crit_edge, label %8

8:                                                ; preds = %.lr.ph, %3
  %9 = getelementptr inbounds i8, ptr %.010, i64 24
  %.0 = load ptr, ptr %9, align 8, !tbaa !5
  %.not = icmp eq ptr %.0, null
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !12

._crit_edge:                                      ; preds = %3, %8, %0
  %.05 = phi i32 [ 0, %0 ], [ 0, %8 ], [ -1, %3 ]
  ret i32 %.05
}

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 }

!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, !6, i64 0}
!10 = !{!"mln_conf_hook_s", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24}
!11 = !{!10, !6, i64 8}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


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