; LLVM IR from specinfo-ua/UAPKI :: library/uapkif/src/asn1 (per_support)

; 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: nounwind uwtable
declare dso_local i32 @per_get_few_bits(ptr noundef, i32 noundef) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
declare dso_local i64 @uper_get_length(ptr noundef, i32 noundef, ptr noundef) #0

; Function Attrs: nounwind uwtable
define dso_local i64 @uper_get_nslength(ptr noundef %0) #0 {
  %2 = alloca i64, align 8
  %3 = alloca ptr, align 8
  %4 = alloca i64, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #2
  %7 = load ptr, ptr %3, align 8, !tbaa !5
  %8 = call i32 @per_get_few_bits(ptr noundef %7, i32 noundef 1)
  %9 = icmp eq i32 %8, 0
  br i1 %9, label %10, label %20

10:                                               ; preds = %1
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  %12 = call i32 @per_get_few_bits(ptr noundef %11, i32 noundef 6)
  %13 = add nsw i32 %12, 1
  %14 = sext i32 %13 to i64
  store i64 %14, ptr %4, align 8, !tbaa !9
  %15 = load i64, ptr %4, align 8, !tbaa !9
  %16 = icmp sle i64 %15, 0
  br i1 %16, label %17, label %18

17:                                               ; preds = %10
  store i64 -1, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %32

18:                                               ; preds = %10
  %19 = load i64, ptr %4, align 8, !tbaa !9
  store i64 %19, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %32

20:                                               ; preds = %1
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  %21 = load ptr, ptr %3, align 8, !tbaa !5
  %22 = call i64 @uper_get_length(ptr noundef %21, i32 noundef -1, ptr noundef %6)
  store i64 %22, ptr %4, align 8, !tbaa !9
  %23 = load i64, ptr %4, align 8, !tbaa !9
  %24 = icmp sge i64 %23, 0
  br i1 %24, label %25, label %30

25:                                               ; preds = %20
  %26 = load i32, ptr %6, align 4, !tbaa !11
  %27 = icmp ne i32 %26, 0
  br i1 %27, label %30, label %28

28:                                               ; preds = %25
  %29 = load i64, ptr %4, align 8, !tbaa !9
  store i64 %29, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %31

30:                                               ; preds = %25, %20
  store i64 -1, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %31

31:                                               ; preds = %30, %28
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  br label %32

32:                                               ; preds = %31, %18, %17
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #2
  %33 = load i64, ptr %2, align 8
  ret i64 %33
}

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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, !12, i64 0}
!12 = !{!"int", !7, 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"

; Function Attrs: nounwind uwtable
declare dso_local i32 @per_get_few_bits(ptr noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
declare dso_local i64 @uper_get_length(ptr noundef, i32 noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local range(i64 -1, -9223372036854775808) i64 @uper_get_nslength(ptr noundef %0) local_unnamed_addr #0 {
  %2 = alloca i32, align 4
  %3 = tail call i32 @per_get_few_bits(ptr noundef %0, i32 noundef 1)
  %4 = icmp eq i32 %3, 0
  br i1 %4, label %5, label %11

5:                                                ; preds = %1
  %6 = tail call i32 @per_get_few_bits(ptr noundef %0, i32 noundef 6)
  %7 = icmp slt i32 %6, 0
  br i1 %7, label %16, label %8

8:                                                ; preds = %5
  %9 = add nuw nsw i32 %6, 1
  %10 = zext nneg i32 %9 to i64
  br label %16

11:                                               ; preds = %1
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #2
  %12 = call i64 @uper_get_length(ptr noundef %0, i32 noundef -1, ptr noundef nonnull %2)
  %13 = icmp slt i64 %12, 0
  %14 = load i32, ptr %2, align 4
  %15 = icmp ne i32 %14, 0
  %or.cond = select i1 %13, i1 true, i1 %15
  %. = select i1 %or.cond, i64 -1, i64 %12
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #2
  br label %16

16:                                               ; preds = %5, %11, %8
  %.1 = phi i64 [ %10, %8 ], [ %., %11 ], [ -1, %5 ]
  ret i64 %.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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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)"}


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