; 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"

; 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
declare dso_local i64 @iwulist_length(ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i64 @iwulist_copy(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca i64, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca ptr, align 8
  %10 = alloca i64, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  store i32 0, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = call i64 @iwulist_length(ptr noundef %11)
  %13 = trunc i64 %12 to i32
  store i32 %13, ptr %7, align 4, !tbaa !9
  br label %14

14:                                               ; preds = %35, %2
  %15 = load i32, ptr %6, align 4, !tbaa !9
  %16 = load i32, ptr %7, align 4, !tbaa !9
  %17 = icmp slt i32 %15, %16
  br i1 %17, label %19, label %18

18:                                               ; preds = %14
  store i32 2, ptr %8, align 4
  br label %38

19:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #2
  %20 = load ptr, ptr %4, align 8, !tbaa !5
  %21 = load i32, ptr %6, align 4, !tbaa !9
  %22 = sext i32 %21 to i64
  %23 = call ptr @iwulist_get(ptr noundef %20, i64 noundef %22)
  store ptr %23, ptr %9, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #2
  %24 = load ptr, ptr %5, align 8, !tbaa !5
  %25 = load ptr, ptr %9, align 8, !tbaa !5
  %26 = call i64 @iwulist_push(ptr noundef %24, ptr noundef %25)
  store i64 %26, ptr %10, align 8, !tbaa !11
  %27 = load i64, ptr %10, align 8, !tbaa !11
  %28 = icmp ne i64 %27, 0
  br i1 %28, label %29, label %31

29:                                               ; preds = %19
  %30 = load i64, ptr %10, align 8, !tbaa !11
  store i64 %30, ptr %3, align 8
  store i32 1, ptr %8, align 4
  br label %32

31:                                               ; preds = %19
  store i32 0, ptr %8, align 4
  br label %32

32:                                               ; preds = %31, %29
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #2
  %33 = load i32, ptr %8, align 4
  switch i32 %33, label %38 [
    i32 0, label %34
  ]

34:                                               ; preds = %32
  br label %35

35:                                               ; preds = %34
  %36 = load i32, ptr %6, align 4, !tbaa !9
  %37 = add nsw i32 %36, 1
  store i32 %37, ptr %6, align 4, !tbaa !9
  br label %14, !llvm.loop !13

38:                                               ; preds = %32, %18
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  %39 = load i32, ptr %8, align 4
  switch i32 %39, label %43 [
    i32 2, label %40
    i32 1, label %41
  ]

40:                                               ; preds = %38
  store i64 0, ptr %3, align 8
  br label %41

41:                                               ; preds = %40, %38
  %42 = load i64, ptr %3, align 8
  ret i64 %42

43:                                               ; preds = %38
  unreachable
}

; Function Attrs: nounwind uwtable
declare dso_local ptr @iwulist_get(ptr noundef, i64 noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local i64 @iwulist_push(ptr noundef, ptr noundef) #1

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 = !{!"int", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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
declare dso_local i64 @iwulist_length(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local i64 @iwulist_copy(ptr noundef %0, ptr noundef %1) local_unnamed_addr #0 {
  %3 = tail call i64 @iwulist_length(ptr noundef %0)
  %4 = trunc i64 %3 to i32
  %.not1617 = icmp sgt i32 %4, 0
  br i1 %.not1617, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %2
  %wide.trip.count = and i64 %3, 2147483647
  br label %.lr.ph

5:                                                ; preds = %.lr.ph
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !5

.lr.ph:                                           ; preds = %.lr.ph.preheader, %5
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next, %5 ]
  %6 = tail call ptr @iwulist_get(ptr noundef %0, i64 noundef %indvars.iv)
  %7 = tail call i64 @iwulist_push(ptr noundef %1, ptr noundef %6)
  %.not = icmp eq i64 %7, 0
  br i1 %.not, label %5, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %5, %2
  %spec.select = phi i64 [ 0, %2 ], [ 0, %5 ], [ %7, %.lr.ph ]
  ret i64 %spec.select
}

; Function Attrs: nounwind uwtable
declare dso_local ptr @iwulist_get(ptr noundef, i64 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local i64 @iwulist_push(ptr noundef, ptr noundef) local_unnamed_addr #0

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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass