; LLVM IR from clibs/clib :: deps/list (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.list_t = type { ptr, ptr, i32, ptr, ptr }
%struct.list_node = type { ptr, ptr, 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

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

12:                                               ; preds = %31, %1
  %13 = load i32, ptr %3, align 4, !tbaa !12
  %14 = add i32 %13, -1
  store i32 %14, ptr %3, align 4, !tbaa !12
  %15 = icmp ne i32 %13, 0
  br i1 %15, label %16, label %34

16:                                               ; preds = %12
  %17 = load ptr, ptr %5, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.list_node, ptr %17, i32 0, i32 1
  %19 = load ptr, ptr %18, align 8, !tbaa !14
  store ptr %19, ptr %4, align 8, !tbaa !5
  %20 = load ptr, ptr %2, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.list_t, ptr %20, i32 0, i32 3
  %22 = load ptr, ptr %21, align 8, !tbaa !16
  %23 = icmp ne ptr %22, null
  br i1 %23, label %24, label %31

24:                                               ; preds = %16
  %25 = load ptr, ptr %2, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.list_t, ptr %25, i32 0, i32 3
  %27 = load ptr, ptr %26, align 8, !tbaa !16
  %28 = load ptr, ptr %5, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.list_node, ptr %28, i32 0, i32 2
  %30 = load ptr, ptr %29, align 8, !tbaa !17
  call void %27(ptr noundef %30)
  br label %31

31:                                               ; preds = %24, %16
  %32 = load ptr, ptr %5, align 8, !tbaa !5
  call void @free(ptr noundef %32) #3
  %33 = load ptr, ptr %4, align 8, !tbaa !5
  store ptr %33, ptr %5, align 8, !tbaa !5
  br label %12, !llvm.loop !18

34:                                               ; preds = %12
  %35 = load ptr, ptr %2, align 8, !tbaa !5
  call void @free(ptr noundef %35) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  ret void
}

; Function Attrs: nounwind
declare void @free(ptr noundef) #2

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 "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 16}
!10 = !{!"", !6, i64 0, !6, i64 8, !11, i64 16, !6, i64 24, !6, i64 32}
!11 = !{!"int", !7, i64 0}
!12 = !{!11, !11, i64 0}
!13 = !{!10, !6, i64 0}
!14 = !{!15, !6, i64 8}
!15 = !{!"list_node", !6, i64 0, !6, i64 8, !6, i64 16}
!16 = !{!10, !6, i64 24}
!17 = !{!15, !6, i64 16}
!18 = distinct !{!18, !19}
!19 = !{!"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: nounwind uwtable
define dso_local void @list_destroy(ptr nocapture noundef %0) local_unnamed_addr #0 {
  %2 = getelementptr inbounds i8, ptr %0, i64 16
  %3 = load i32, ptr %2, align 8, !tbaa !5
  %.not12 = icmp eq i32 %3, 0
  br i1 %.not12, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %1
  %4 = load ptr, ptr %0, align 8, !tbaa !11
  %5 = getelementptr inbounds i8, ptr %0, i64 24
  br label %6

6:                                                ; preds = %.lr.ph, %14
  %.in = phi i32 [ %3, %.lr.ph ], [ %7, %14 ]
  %.013 = phi ptr [ %4, %.lr.ph ], [ %9, %14 ]
  %7 = add i32 %.in, -1
  %8 = getelementptr inbounds i8, ptr %.013, i64 8
  %9 = load ptr, ptr %8, align 8, !tbaa !12
  %10 = load ptr, ptr %5, align 8, !tbaa !14
  %.not11 = icmp eq ptr %10, null
  br i1 %.not11, label %14, label %11

11:                                               ; preds = %6
  %12 = getelementptr inbounds i8, ptr %.013, i64 16
  %13 = load ptr, ptr %12, align 8, !tbaa !15
  tail call void %10(ptr noundef %13) #2
  br label %14

14:                                               ; preds = %11, %6
  tail call void @free(ptr noundef nonnull %.013) #2
  %.not = icmp eq i32 %7, 0
  br i1 %.not, label %._crit_edge, label %6, !llvm.loop !16

._crit_edge:                                      ; preds = %14, %1
  tail call void @free(ptr noundef nonnull %0) #2
  ret void
}

; Function Attrs: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture 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 = { mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite) "alloc-family"="malloc" "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, !10, i64 16}
!6 = !{!"", !7, i64 0, !7, i64 8, !10, i64 16, !7, i64 24, !7, i64 32}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!6, !7, i64 0}
!12 = !{!13, !7, i64 8}
!13 = !{!"list_node", !7, i64 0, !7, i64 8, !7, i64 16}
!14 = !{!6, !7, i64 24}
!15 = !{!13, !7, i64 16}
!16 = distinct !{!16, !17}
!17 = !{!"llvm.loop.mustprogress"}


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