; LLVM IR from seppo0010/rlite :: src (page_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.rl_list = type { i64, i64, ptr, i64, i64 }
%struct.rl_list_type = type { ptr, ptr, i32, ptr }
%struct.rl_list_node = type { i64, i64, i64, ptr }

; 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

declare i32 @rl_read(ptr noundef, ptr noundef, i64 noundef, ptr noundef, ptr noundef, i32 noundef) #1

declare i32 @rl_delete(ptr noundef, i64 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @rl_list_delete(ptr noundef %0, ptr noundef %1) #2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i64, align 8
  %8 = alloca i64, align 8
  %9 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %10 = load ptr, ptr %4, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.rl_list, ptr %10, i32 0, i32 3
  %12 = load i64, ptr %11, align 8, !tbaa !9
  store i64 %12, ptr %7, align 8, !tbaa !12
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  store i32 0, ptr %9, align 4, !tbaa !13
  br label %13

13:                                               ; preds = %40, %2
  %14 = load i64, ptr %7, align 8, !tbaa !12
  %15 = icmp ne i64 %14, 0
  br i1 %15, label %16, label %42

16:                                               ; preds = %13
  %17 = load ptr, ptr %3, align 8, !tbaa !5
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.rl_list, ptr %18, i32 0, i32 2
  %20 = load ptr, ptr %19, align 8, !tbaa !15
  %21 = getelementptr inbounds %struct.rl_list_type, ptr %20, i32 0, i32 1
  %22 = load ptr, ptr %21, align 8, !tbaa !16
  %23 = load i64, ptr %7, align 8, !tbaa !12
  %24 = load ptr, ptr %4, align 8, !tbaa !5
  %25 = call i32 @rl_read(ptr noundef %17, ptr noundef %22, i64 noundef %23, ptr noundef %24, ptr noundef %6, i32 noundef 1)
  store i32 %25, ptr %9, align 4, !tbaa !13
  %26 = load i32, ptr %9, align 4, !tbaa !13
  %27 = icmp ne i32 2, %26
  br i1 %27, label %28, label %29

28:                                               ; preds = %16
  br label %43

29:                                               ; preds = %16
  %30 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %30, ptr %5, align 8, !tbaa !5
  %31 = load ptr, ptr %5, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.rl_list_node, ptr %31, i32 0, i32 2
  %33 = load i64, ptr %32, align 8, !tbaa !18
  store i64 %33, ptr %8, align 8, !tbaa !12
  %34 = load ptr, ptr %3, align 8, !tbaa !5
  %35 = load i64, ptr %7, align 8, !tbaa !12
  %36 = call i32 @rl_delete(ptr noundef %34, i64 noundef %35)
  store i32 %36, ptr %9, align 4, !tbaa !13
  %37 = load i32, ptr %9, align 4, !tbaa !13
  %38 = icmp ne i32 0, %37
  br i1 %38, label %39, label %40

39:                                               ; preds = %29
  br label %43

40:                                               ; preds = %29
  %41 = load i64, ptr %8, align 8, !tbaa !12
  store i64 %41, ptr %7, align 8, !tbaa !12
  br label %13, !llvm.loop !20

42:                                               ; preds = %13
  store i32 0, ptr %9, align 4, !tbaa !13
  br label %43

43:                                               ; preds = %42, %39, %28
  %44 = load i32, ptr %9, align 4, !tbaa !13
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  ret i32 %44
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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, !11, i64 24}
!10 = !{!"rl_list", !11, i64 0, !11, i64 8, !6, i64 16, !11, i64 24, !11, i64 32}
!11 = !{!"long", !7, i64 0}
!12 = !{!11, !11, i64 0}
!13 = !{!14, !14, i64 0}
!14 = !{!"int", !7, i64 0}
!15 = !{!10, !6, i64 16}
!16 = !{!17, !6, i64 8}
!17 = !{!"", !6, i64 0, !6, i64 8, !14, i64 16, !6, i64 24}
!18 = !{!19, !11, i64 16}
!19 = !{!"rl_list_node", !11, i64 0, !11, i64 8, !11, i64 16, !6, i64 24}
!20 = distinct !{!20, !21}
!21 = !{!"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"

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

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

declare i32 @rl_read(ptr noundef, ptr noundef, i64 noundef, ptr noundef, ptr noundef, i32 noundef) local_unnamed_addr #1

declare i32 @rl_delete(ptr noundef, i64 noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local i32 @rl_list_delete(ptr noundef %0, ptr noundef %1) local_unnamed_addr #2 {
  %3 = alloca ptr, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #3
  %4 = getelementptr inbounds i8, ptr %1, i64 24
  %5 = load i64, ptr %4, align 8, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %1, i64 16
  br label %7

7:                                                ; preds = %13, %2
  %.012 = phi i64 [ %5, %2 ], [ %16, %13 ]
  %.not = icmp eq i64 %.012, 0
  br i1 %.not, label %18, label %8

8:                                                ; preds = %7
  %9 = load ptr, ptr %6, align 8, !tbaa !11
  %10 = getelementptr inbounds i8, ptr %9, i64 8
  %11 = load ptr, ptr %10, align 8, !tbaa !12
  %12 = call i32 @rl_read(ptr noundef %0, ptr noundef %11, i64 noundef %.012, ptr noundef nonnull %1, ptr noundef nonnull %3, i32 noundef 1) #3
  %.not15 = icmp eq i32 %12, 2
  br i1 %.not15, label %13, label %18

13:                                               ; preds = %8
  %14 = load ptr, ptr %3, align 8, !tbaa !15
  %15 = getelementptr inbounds i8, ptr %14, i64 16
  %16 = load i64, ptr %15, align 8, !tbaa !16
  %17 = call i32 @rl_delete(ptr noundef %0, i64 noundef %.012) #3
  %.not16 = icmp eq i32 %17, 0
  br i1 %.not16, label %7, label %18, !llvm.loop !18

18:                                               ; preds = %7, %13, %8
  %.0 = phi i32 [ %12, %8 ], [ %17, %13 ], [ 0, %7 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #3
  ret i32 %.0
}

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 24}
!6 = !{!"rl_list", !7, i64 0, !7, i64 8, !10, i64 16, !7, i64 24, !7, i64 32}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !10, i64 16}
!12 = !{!13, !10, i64 8}
!13 = !{!"", !10, i64 0, !10, i64 8, !14, i64 16, !10, i64 24}
!14 = !{!"int", !8, i64 0}
!15 = !{!10, !10, i64 0}
!16 = !{!17, !7, i64 16}
!17 = !{!"rl_list_node", !7, i64 0, !7, i64 8, !7, i64 16, !10, i64 24}
!18 = distinct !{!18, !19}
!19 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,LoopSimplifyPass,SROAPass,SimplifyCFGPass