; 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: nounwind uwtable
define dso_local ptr @iwlist_at2(ptr noundef %0, i64 noundef %1, ptr noundef %2) #0 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca ptr, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i64 %1, ptr %6, align 8, !tbaa !9
  store ptr %2, ptr %7, align 8, !tbaa !5
  %8 = load i64, ptr %6, align 8, !tbaa !9
  %9 = load ptr, ptr %5, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.iwlist, ptr %9, i32 0, i32 3
  %11 = load i64, ptr %10, align 8, !tbaa !11
  %12 = icmp uge i64 %8, %11
  br i1 %12, label %13, label %14

13:                                               ; preds = %3
  store ptr null, ptr %4, align 8
  br label %39

14:                                               ; preds = %3
  %15 = load ptr, ptr %5, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.iwlist, ptr %15, i32 0, i32 2
  %17 = load i64, ptr %16, align 8, !tbaa !13
  %18 = load i64, ptr %6, align 8, !tbaa !9
  %19 = add i64 %18, %17
  store i64 %19, ptr %6, align 8, !tbaa !9
  %20 = load ptr, ptr %7, align 8, !tbaa !5
  %21 = icmp ne ptr %20, null
  br i1 %21, label %22, label %31

22:                                               ; preds = %14
  %23 = load ptr, ptr %5, align 8, !tbaa !5
  %24 = getelementptr inbounds %struct.iwlist, ptr %23, i32 0, i32 0
  %25 = load ptr, ptr %24, align 8, !tbaa !14
  %26 = load i64, ptr %6, align 8, !tbaa !9
  %27 = getelementptr inbounds %struct.iwlistitem, ptr %25, i64 %26
  %28 = getelementptr inbounds %struct.iwlistitem, ptr %27, i32 0, i32 1
  %29 = load i64, ptr %28, align 8, !tbaa !15
  %30 = load ptr, ptr %7, align 8, !tbaa !5
  store i64 %29, ptr %30, align 8, !tbaa !9
  br label %31

31:                                               ; preds = %22, %14
  %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 %6, align 8, !tbaa !9
  %36 = getelementptr inbounds %struct.iwlistitem, ptr %34, i64 %35
  %37 = getelementptr inbounds %struct.iwlistitem, ptr %36, i32 0, i32 0
  %38 = load ptr, ptr %37, align 8, !tbaa !17
  store ptr %38, ptr %4, align 8
  br label %39

39:                                               ; preds = %31, %13
  %40 = load ptr, ptr %4, align 8
  ret ptr %40
}

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" }

!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_at2(ptr nocapture noundef readonly %0, i64 noundef %1, ptr noundef writeonly %2) local_unnamed_addr #0 {
  %4 = getelementptr inbounds i8, ptr %0, i64 24
  %5 = load i64, ptr %4, align 8, !tbaa !5
  %.not = icmp ugt i64 %5, %1
  br i1 %.not, label %6, label %16

6:                                                ; preds = %3
  %7 = getelementptr inbounds i8, ptr %0, i64 16
  %8 = load i64, ptr %7, align 8, !tbaa !11
  %9 = add i64 %8, %1
  %.not12 = icmp eq ptr %2, null
  %.pre = load ptr, ptr %0, align 8, !tbaa !12
  br i1 %.not12, label %13, label %10

10:                                               ; preds = %6
  %11 = getelementptr inbounds %struct.iwlistitem, ptr %.pre, i64 %9, i32 1
  %12 = load i64, ptr %11, align 8, !tbaa !13
  store i64 %12, ptr %2, align 8, !tbaa !15
  br label %13

13:                                               ; preds = %10, %6
  %14 = getelementptr inbounds %struct.iwlistitem, ptr %.pre, i64 %9
  %15 = load ptr, ptr %14, align 8, !tbaa !16
  br label %16

16:                                               ; preds = %3, %13
  %.0 = phi ptr [ %15, %13 ], [ null, %3 ]
  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, !10, i64 24}
!6 = !{!"iwlist", !7, i64 0, !10, i64 8, !10, 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 = !{!6, !10, i64 16}
!12 = !{!6, !7, i64 0}
!13 = !{!14, !10, i64 8}
!14 = !{!"iwlistitem", !7, i64 0, !10, i64 8}
!15 = !{!10, !10, i64 0}
!16 = !{!14, !7, i64 0}


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