; LLVM IR from maksimandrianov/cdcontainers :: src (list)

; 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.cdc_list = type { ptr, ptr, i64, ptr }
%struct.cdc_list_node = type { ptr, ptr, ptr }

@.str = external hidden unnamed_addr constant [10 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [73 x i8], align 1
@__PRETTY_FUNCTION__.cdc_list_push_back = external hidden unnamed_addr constant [51 x i8], align 1

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

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

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

; Function Attrs: nounwind uwtable
define dso_local i32 @cdc_list_push_back(ptr noundef %0, ptr noundef %1) #2 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = icmp ne ptr %8, null
  br i1 %9, label %10, label %11

10:                                               ; preds = %2
  br label %12

11:                                               ; preds = %2
  call void @__assert_fail(ptr noundef @.str, ptr noundef @.str.1, i32 noundef 298, ptr noundef @__PRETTY_FUNCTION__.cdc_list_push_back) #3
  unreachable

12:                                               ; preds = %10
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  %13 = load ptr, ptr %5, align 8, !tbaa !5
  %14 = call ptr @make_new_node(ptr noundef %13)
  store ptr %14, ptr %6, align 8, !tbaa !5
  %15 = load ptr, ptr %6, align 8, !tbaa !5
  %16 = icmp ne ptr %15, null
  br i1 %16, label %18, label %17

17:                                               ; preds = %12
  store i32 1, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %50

18:                                               ; preds = %12
  %19 = load ptr, ptr %4, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.cdc_list, ptr %19, i32 0, i32 1
  %21 = load ptr, ptr %20, align 8, !tbaa !9
  %22 = icmp eq ptr %21, null
  br i1 %22, label %23, label %29

23:                                               ; preds = %18
  %24 = load ptr, ptr %6, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct.cdc_list_node, ptr %24, i32 0, i32 1
  store ptr null, ptr %25, align 8, !tbaa !12
  %26 = load ptr, ptr %6, align 8, !tbaa !5
  %27 = load ptr, ptr %4, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct.cdc_list, ptr %27, i32 0, i32 0
  store ptr %26, ptr %28, align 8, !tbaa !14
  br label %40

29:                                               ; preds = %18
  %30 = load ptr, ptr %4, align 8, !tbaa !5
  %31 = getelementptr inbounds %struct.cdc_list, ptr %30, i32 0, i32 1
  %32 = load ptr, ptr %31, align 8, !tbaa !9
  %33 = load ptr, ptr %6, align 8, !tbaa !5
  %34 = getelementptr inbounds %struct.cdc_list_node, ptr %33, i32 0, i32 1
  store ptr %32, ptr %34, align 8, !tbaa !12
  %35 = load ptr, ptr %6, align 8, !tbaa !5
  %36 = load ptr, ptr %4, align 8, !tbaa !5
  %37 = getelementptr inbounds %struct.cdc_list, ptr %36, i32 0, i32 1
  %38 = load ptr, ptr %37, align 8, !tbaa !9
  %39 = getelementptr inbounds %struct.cdc_list_node, ptr %38, i32 0, i32 0
  store ptr %35, ptr %39, align 8, !tbaa !15
  br label %40

40:                                               ; preds = %29, %23
  %41 = load ptr, ptr %6, align 8, !tbaa !5
  %42 = getelementptr inbounds %struct.cdc_list_node, ptr %41, i32 0, i32 0
  store ptr null, ptr %42, align 8, !tbaa !15
  %43 = load ptr, ptr %6, align 8, !tbaa !5
  %44 = load ptr, ptr %4, align 8, !tbaa !5
  %45 = getelementptr inbounds %struct.cdc_list, ptr %44, i32 0, i32 1
  store ptr %43, ptr %45, align 8, !tbaa !9
  %46 = load ptr, ptr %4, align 8, !tbaa !5
  %47 = getelementptr inbounds %struct.cdc_list, ptr %46, i32 0, i32 2
  %48 = load i64, ptr %47, align 8, !tbaa !16
  %49 = add i64 %48, 1
  store i64 %49, ptr %47, align 8, !tbaa !16
  store i32 0, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %50

50:                                               ; preds = %40, %17
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  %51 = load i32, ptr %3, align 4
  ret i32 %51
}

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

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


; 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 = external hidden unnamed_addr constant [10 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [73 x i8], align 1
@__PRETTY_FUNCTION__.cdc_list_push_back = external hidden unnamed_addr constant [51 x i8], align 1

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

; Function Attrs: nounwind uwtable
define dso_local range(i32 0, 2) i32 @cdc_list_push_back(ptr noundef %0, ptr noundef %1) local_unnamed_addr #1 {
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %3, label %4

3:                                                ; preds = %2
  tail call void @__assert_fail(ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i32 noundef 298, ptr noundef nonnull @__PRETTY_FUNCTION__.cdc_list_push_back) #2
  unreachable

4:                                                ; preds = %2
  %5 = tail call ptr @make_new_node(ptr noundef %1)
  %.not18 = icmp eq ptr %5, null
  br i1 %.not18, label %14, label %6

6:                                                ; preds = %4
  %7 = getelementptr inbounds i8, ptr %0, i64 8
  %8 = load ptr, ptr %7, align 8, !tbaa !5
  %9 = icmp eq ptr %8, null
  %. = select i1 %9, ptr %0, ptr %8
  store ptr %5, ptr %., align 8, !tbaa !11
  %10 = getelementptr inbounds i8, ptr %5, i64 8
  store ptr %8, ptr %10, align 8
  store ptr null, ptr %5, align 8, !tbaa !12
  store ptr %5, ptr %7, align 8, !tbaa !5
  %11 = getelementptr inbounds i8, ptr %0, i64 16
  %12 = load i64, ptr %11, align 8, !tbaa !14
  %13 = add i64 %12, 1
  store i64 %13, ptr %11, align 8, !tbaa !14
  br label %14

14:                                               ; preds = %4, %6
  %.0 = phi i32 [ 0, %6 ], [ 1, %4 ]
  ret i32 %.0
}

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

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 = { 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 = { 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, !7, i64 8}
!6 = !{!"cdc_list", !7, i64 0, !7, i64 8, !10, i64 16, !7, 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 = !{!7, !7, i64 0}
!12 = !{!13, !7, i64 0}
!13 = !{!"cdc_list_node", !7, i64 0, !7, i64 8, !7, i64 16}
!14 = !{!6, !10, i64 16}


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