; LLVM IR from Softmotions/iowow :: src/utils (iwarr)

; 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.iwlist = type { ptr, i64, i64, i64 }
%struct.iwlistitem = type { ptr, i64 }

; 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 ptr @iwlist_pop(ptr noundef %0, ptr noundef %1, ptr noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i64, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store ptr %2, ptr %7, align 8, !tbaa !5
  %9 = load ptr, ptr %7, align 8, !tbaa !5
  store i64 0, ptr %9, align 8, !tbaa !9
  %10 = load ptr, ptr %5, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.iwlist, ptr %10, i32 0, i32 3
  %12 = load i64, ptr %11, align 8, !tbaa !11
  %13 = icmp ne i64 %12, 0
  br i1 %13, label %16, label %14

14:                                               ; preds = %3
  %15 = load ptr, ptr %7, align 8, !tbaa !5
  store i64 70011, ptr %15, align 8, !tbaa !9
  store ptr null, ptr %4, align 8
  br label %48

16:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #2
  %17 = load ptr, ptr %5, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.iwlist, ptr %17, i32 0, i32 2
  %19 = load i64, ptr %18, align 8, !tbaa !13
  %20 = load ptr, ptr %5, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.iwlist, ptr %20, i32 0, i32 3
  %22 = load i64, ptr %21, align 8, !tbaa !11
  %23 = add i64 %19, %22
  %24 = sub i64 %23, 1
  store i64 %24, ptr %8, align 8, !tbaa !9
  %25 = load ptr, ptr %5, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.iwlist, ptr %25, i32 0, i32 3
  %27 = load i64, ptr %26, align 8, !tbaa !11
  %28 = add i64 %27, -1
  store i64 %28, ptr %26, align 8, !tbaa !11
  %29 = load ptr, ptr %6, align 8, !tbaa !5
  %30 = icmp ne ptr %29, null
  br i1 %30, label %31, label %40

31:                                               ; preds = %16
  %32 = load ptr, ptr %5, align 8, !tbaa !5
  %33 = getelementptr inbounds %struct.iwlist, ptr %32, i32 0, i32 0
  %34 = load ptr, ptr %33, align 8, !tbaa !14
  %35 = load i64, ptr %8, align 8, !tbaa !9
  %36 = getelementptr inbounds %struct.iwlistitem, ptr %34, i64 %35
  %37 = getelementptr inbounds %struct.iwlistitem, ptr %36, i32 0, i32 1
  %38 = load i64, ptr %37, align 8, !tbaa !15
  %39 = load ptr, ptr %6, align 8, !tbaa !5
  store i64 %38, ptr %39, align 8, !tbaa !9
  br label %40

40:                                               ; preds = %31, %16
  %41 = load ptr, ptr %5, align 8, !tbaa !5
  %42 = getelementptr inbounds %struct.iwlist, ptr %41, i32 0, i32 0
  %43 = load ptr, ptr %42, align 8, !tbaa !14
  %44 = load i64, ptr %8, align 8, !tbaa !9
  %45 = getelementptr inbounds %struct.iwlistitem, ptr %43, i64 %44
  %46 = getelementptr inbounds %struct.iwlistitem, ptr %45, i32 0, i32 0
  %47 = load ptr, ptr %46, align 8, !tbaa !17
  store ptr %47, ptr %4, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #2
  br label %48

48:                                               ; preds = %40, %14
  %49 = load ptr, ptr %4, align 8
  ret ptr %49
}

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 }

!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, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!12, !10, i64 24}
!12 = !{!"iwlist", !6, i64 0, !10, i64 8, !10, i64 16, !10, i64 24}
!13 = !{!12, !10, i64 16}
!14 = !{!12, !6, i64 0}
!15 = !{!16, !10, i64 8}
!16 = !{!"iwlistitem", !6, i64 0, !10, i64 8}
!17 = !{!16, !6, i64 0}


; 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"

%struct.iwlistitem = type { ptr, i64 }

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(read, argmem: readwrite, inaccessiblemem: none) uwtable
define dso_local ptr @iwlist_pop(ptr nocapture noundef %0, ptr noundef writeonly %1, ptr nocapture noundef writeonly %2) local_unnamed_addr #0 {
  store i64 0, ptr %2, align 8, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %0, i64 24
  %5 = load i64, ptr %4, align 8, !tbaa !9
  %.not = icmp eq i64 %5, 0
  br i1 %.not, label %6, label %7

6:                                                ; preds = %3
  store i64 70011, ptr %2, align 8, !tbaa !5
  br label %18

7:                                                ; preds = %3
  %8 = getelementptr inbounds i8, ptr %0, i64 16
  %9 = load i64, ptr %8, align 8, !tbaa !12
  %10 = add i64 %5, -1
  %11 = add i64 %10, %9
  store i64 %10, ptr %4, align 8, !tbaa !9
  %.not14 = icmp eq ptr %1, null
  %.pre = load ptr, ptr %0, align 8, !tbaa !13
  br i1 %.not14, label %15, label %12

12:                                               ; preds = %7
  %13 = getelementptr inbounds %struct.iwlistitem, ptr %.pre, i64 %11, i32 1
  %14 = load i64, ptr %13, align 8, !tbaa !14
  store i64 %14, ptr %1, align 8, !tbaa !5
  br label %15

15:                                               ; preds = %12, %7
  %16 = getelementptr inbounds %struct.iwlistitem, ptr %.pre, i64 %11
  %17 = load ptr, ptr %16, align 8, !tbaa !16
  br label %18

18:                                               ; preds = %15, %6
  %.0 = phi ptr [ %17, %15 ], [ null, %6 ]
  ret ptr %.0
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(read, argmem: readwrite, inaccessiblemem: none) 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)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !6, i64 24}
!10 = !{!"iwlist", !11, i64 0, !6, i64 8, !6, i64 16, !6, i64 24}
!11 = !{!"any pointer", !7, i64 0}
!12 = !{!10, !6, i64 16}
!13 = !{!10, !11, i64 0}
!14 = !{!15, !6, i64 8}
!15 = !{!"iwlistitem", !11, i64 0, !6, i64 8}
!16 = !{!15, !11, i64 0}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass