; LLVM IR from pmwkaa/monotone :: monotone/engine/engine (engine)

; 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.Engine = type { %struct.Mutex, %struct.CondVar, %struct.Mapping, %struct.Pipeline, %struct.StorageMgr, ptr, ptr, ptr }
%struct.Mutex = type { %union.pthread_mutex_t }
%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 }
%struct.CondVar = type { %union.pthread_cond_t }
%union.pthread_cond_t = type { %struct.__pthread_cond_s }
%struct.__pthread_cond_s = type { %union.__atomic_wide_counter, %union.__atomic_wide_counter, [2 x i32], [2 x i32], i32, i32, [2 x i32] }
%union.__atomic_wide_counter = type { i64 }
%struct.Mapping = type { %struct.Rbtree, i32 }
%struct.Rbtree = type { ptr }
%struct.Pipeline = type { %struct.List, i32, ptr }
%struct.List = type { ptr, ptr }
%struct.StorageMgr = type { %struct.List, i32, ptr }

; Function Attrs: nounwind uwtable
define dso_local void @engine_close(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  br label %6

6:                                                ; preds = %22, %1
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #4
  %7 = load ptr, ptr %2, align 8, !tbaa !5
  %8 = getelementptr inbounds %struct.Engine, ptr %7, i32 0, i32 2
  %9 = call ptr @mapping_min(ptr noundef %8)
  store ptr %9, ptr %3, align 8, !tbaa !5
  %10 = load ptr, ptr %3, align 8, !tbaa !5
  %11 = icmp ne ptr %10, null
  br i1 %11, label %13, label %12

12:                                               ; preds = %6
  store i32 2, ptr %4, align 4
  br label %20

13:                                               ; preds = %6
  %14 = load ptr, ptr %2, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.Engine, ptr %14, i32 0, i32 2
  %16 = load ptr, ptr %3, align 8, !tbaa !5
  call void @mapping_remove(ptr noundef %15, ptr noundef %16)
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #4
  %17 = load ptr, ptr %3, align 8, !tbaa !5
  %18 = call ptr @ref_of(ptr noundef %17)
  store ptr %18, ptr %5, align 8, !tbaa !5
  %19 = load ptr, ptr %5, align 8, !tbaa !5
  call void @ref_free(ptr noundef %19)
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  store i32 0, ptr %4, align 4
  br label %20

20:                                               ; preds = %13, %12
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #4
  %21 = load i32, ptr %4, align 4
  switch i32 %21, label %24 [
    i32 0, label %22
    i32 2, label %23
  ]

22:                                               ; preds = %20
  br label %6

23:                                               ; preds = %20
  ret void

24:                                               ; preds = %20
  unreachable
}

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

; Function Attrs: inlinehint nounwind uwtable
declare hidden ptr @mapping_min(ptr noundef) #2

; Function Attrs: inlinehint nounwind uwtable
declare hidden void @mapping_remove(ptr noundef, ptr noundef) #2

; Function Attrs: alwaysinline nounwind uwtable
declare hidden ptr @ref_of(ptr noundef) #3

; Function Attrs: inlinehint nounwind uwtable
declare hidden void @ref_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 = { inlinehint 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 #3 = { alwaysinline 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 #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"}


; 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"

; Function Attrs: nounwind uwtable
define dso_local void @engine_close(ptr noundef %0) local_unnamed_addr #0 {
  %2 = getelementptr inbounds i8, ptr %0, i64 88
  %3 = tail call ptr @mapping_min(ptr noundef nonnull %2)
  %.not9 = icmp eq ptr %3, null
  br i1 %.not9, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %1, %.lr.ph
  %4 = phi ptr [ %6, %.lr.ph ], [ %3, %1 ]
  tail call void @mapping_remove(ptr noundef nonnull %2, ptr noundef nonnull %4)
  %5 = tail call ptr @ref_of(ptr noundef nonnull %4)
  tail call void @ref_free(ptr noundef %5)
  %6 = tail call ptr @mapping_min(ptr noundef nonnull %2)
  %.not = icmp eq ptr %6, null
  br i1 %.not, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph, %1
  ret void
}

; Function Attrs: inlinehint nounwind uwtable
declare hidden ptr @mapping_min(ptr noundef) local_unnamed_addr #1

; Function Attrs: inlinehint nounwind uwtable
declare hidden void @mapping_remove(ptr noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: alwaysinline nounwind uwtable
declare hidden ptr @ref_of(ptr noundef) local_unnamed_addr #2

; Function Attrs: inlinehint nounwind uwtable
declare hidden void @ref_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 = { inlinehint 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 = { alwaysinline 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" }

!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)"}


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