; LLVM IR from theck01/offbrand_lib :: src/classes (obdeque)

; 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.obdeque_struct = type { ptr, ptr, ptr, i64 }
%struct.obdeque_node_struct = type { ptr, ptr, ptr, ptr }

@.str.1 = external hidden unnamed_addr constant [76 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [6 x i8], align 1
@__PRETTY_FUNCTION__.obdeque_remove_head = external hidden unnamed_addr constant [36 x i8], align 1

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

; Function Attrs: noreturn nounwind
declare void @__assert_fail(ptr noundef, ptr noundef, i32 noundef, ptr noundef) #1

declare ptr @ob_release(ptr noundef) #2

; 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
define dso_local void @obdeque_remove_head(ptr noundef %0) #3 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #4
  %5 = load ptr, ptr %2, align 8, !tbaa !5
  %6 = icmp ne ptr %5, null
  br i1 %6, label %7, label %8

7:                                                ; preds = %1
  br label %9

8:                                                ; preds = %1
  call void @__assert_fail(ptr noundef @.str.2, ptr noundef @.str.1, i32 noundef 309, ptr noundef @__PRETTY_FUNCTION__.obdeque_remove_head) #5
  unreachable

9:                                                ; preds = %7
  %10 = load ptr, ptr %2, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.obdeque_struct, ptr %10, i32 0, i32 1
  %12 = load ptr, ptr %11, align 8, !tbaa !9
  store ptr %12, ptr %3, align 8, !tbaa !5
  %13 = icmp ne ptr %12, null
  br i1 %13, label %15, label %14

14:                                               ; preds = %9
  store i32 1, ptr %4, align 4
  br label %46

15:                                               ; preds = %9
  %16 = load ptr, ptr %2, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.obdeque_struct, ptr %16, i32 0, i32 1
  %18 = load ptr, ptr %17, align 8, !tbaa !9
  %19 = getelementptr inbounds %struct.obdeque_node_struct, ptr %18, i32 0, i32 2
  %20 = load ptr, ptr %19, align 8, !tbaa !12
  %21 = load ptr, ptr %2, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.obdeque_struct, ptr %21, i32 0, i32 1
  store ptr %20, ptr %22, align 8, !tbaa !9
  %23 = load ptr, ptr %2, align 8, !tbaa !5
  %24 = getelementptr inbounds %struct.obdeque_struct, ptr %23, i32 0, i32 1
  %25 = load ptr, ptr %24, align 8, !tbaa !9
  %26 = icmp ne ptr %25, null
  br i1 %26, label %27, label %32

27:                                               ; preds = %15
  %28 = load ptr, ptr %2, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.obdeque_struct, ptr %28, i32 0, i32 1
  %30 = load ptr, ptr %29, align 8, !tbaa !9
  %31 = getelementptr inbounds %struct.obdeque_node_struct, ptr %30, i32 0, i32 3
  store ptr null, ptr %31, align 8, !tbaa !14
  br label %35

32:                                               ; preds = %15
  %33 = load ptr, ptr %2, align 8, !tbaa !5
  %34 = getelementptr inbounds %struct.obdeque_struct, ptr %33, i32 0, i32 2
  store ptr null, ptr %34, align 8, !tbaa !15
  br label %35

35:                                               ; preds = %32, %27
  %36 = load ptr, ptr %2, align 8, !tbaa !5
  %37 = getelementptr inbounds %struct.obdeque_struct, ptr %36, i32 0, i32 3
  %38 = load i64, ptr %37, align 8, !tbaa !16
  %39 = add i64 %38, -1
  store i64 %39, ptr %37, align 8, !tbaa !16
  %40 = load ptr, ptr %3, align 8, !tbaa !5
  %41 = getelementptr inbounds %struct.obdeque_node_struct, ptr %40, i32 0, i32 2
  store ptr null, ptr %41, align 8, !tbaa !12
  %42 = load ptr, ptr %3, align 8, !tbaa !5
  %43 = getelementptr inbounds %struct.obdeque_node_struct, ptr %42, i32 0, i32 3
  store ptr null, ptr %43, align 8, !tbaa !14
  %44 = load ptr, ptr %3, align 8, !tbaa !5
  %45 = call ptr @ob_release(ptr noundef %44)
  store i32 1, ptr %4, align 4
  br label %46

46:                                               ; preds = %35, %14
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #4
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { noreturn 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 = { 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 }
attributes #5 = { noreturn 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 8}
!10 = !{!"obdeque_struct", !6, i64 0, !6, i64 8, !6, i64 16, !11, i64 24}
!11 = !{!"long", !7, i64 0}
!12 = !{!13, !6, i64 16}
!13 = !{!"obdeque_node_struct", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24}
!14 = !{!13, !6, i64 24}
!15 = !{!10, !6, i64 16}
!16 = !{!10, !11, i64 24}


; 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.1 = external hidden unnamed_addr constant [76 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [6 x i8], align 1
@__PRETTY_FUNCTION__.obdeque_remove_head = external hidden unnamed_addr constant [36 x i8], align 1

; Function Attrs: noreturn nounwind
declare void @__assert_fail(ptr noundef, ptr noundef, i32 noundef, ptr noundef) local_unnamed_addr #0

declare ptr @ob_release(ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local void @obdeque_remove_head(ptr noundef %0) local_unnamed_addr #2 {
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %2, label %3

2:                                                ; preds = %1
  tail call void @__assert_fail(ptr noundef nonnull @.str.2, ptr noundef nonnull @.str.1, i32 noundef 309, ptr noundef nonnull @__PRETTY_FUNCTION__.obdeque_remove_head) #4
  unreachable

3:                                                ; preds = %1
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  %5 = load ptr, ptr %4, align 8, !tbaa !5
  %.not13 = icmp eq ptr %5, null
  br i1 %.not13, label %15, label %6

6:                                                ; preds = %3
  %7 = getelementptr inbounds i8, ptr %5, i64 16
  %8 = load ptr, ptr %7, align 8, !tbaa !11
  store ptr %8, ptr %4, align 8, !tbaa !5
  %.not14 = icmp eq ptr %8, null
  %9 = getelementptr inbounds i8, ptr %0, i64 16
  %10 = getelementptr inbounds i8, ptr %8, i64 24
  %.sink = select i1 %.not14, ptr %9, ptr %10
  store ptr null, ptr %.sink, align 8, !tbaa !13
  %11 = getelementptr inbounds i8, ptr %0, i64 24
  %12 = load i64, ptr %11, align 8, !tbaa !14
  %13 = add i64 %12, -1
  store i64 %13, ptr %11, align 8, !tbaa !14
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %7, i8 0, i64 16, i1 false)
  %14 = tail call ptr @ob_release(ptr noundef nonnull %5) #5
  br label %15

15:                                               ; preds = %3, %6
  ret void
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #3

attributes #0 = { noreturn 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 #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 = { 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 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #4 = { noreturn nounwind }
attributes #5 = { 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, !7, i64 8}
!6 = !{!"obdeque_struct", !7, i64 0, !7, i64 8, !7, i64 16, !10, i64 24}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"long", !8, i64 0}
!11 = !{!12, !7, i64 16}
!12 = !{!"obdeque_node_struct", !7, i64 0, !7, i64 8, !7, i64 16, !7, i64 24}
!13 = !{!7, !7, i64 0}
!14 = !{!6, !10, i64 24}


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