; LLVM IR from guanzhi/GmSSL :: src (asn1)

; 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"

@stderr = external global ptr, align 8
@.str = external hidden unnamed_addr constant [13 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [58 x i8], align 1
@__FUNCTION__.asn1_bit_octets_from_der_ex = external hidden unnamed_addr constant [28 x i8], align 1

; Function Attrs: nounwind
declare i32 @fprintf(ptr noundef, ptr 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 i32 @asn1_bit_string_from_der_ex(i32 noundef, ptr noundef, ptr noundef, ptr noundef, ptr noundef) #2

; Function Attrs: nounwind uwtable
define dso_local i32 @asn1_bit_octets_from_der_ex(i32 noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef %3, ptr noundef %4) #2 {
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca ptr, align 8
  %11 = alloca ptr, align 8
  %12 = alloca i32, align 4
  %13 = alloca ptr, align 8
  %14 = alloca i64, align 8
  %15 = alloca i32, align 4
  store i32 %0, ptr %7, align 4, !tbaa !5
  store ptr %1, ptr %8, align 8, !tbaa !9
  store ptr %2, ptr %9, align 8, !tbaa !9
  store ptr %3, ptr %10, align 8, !tbaa !9
  store ptr %4, ptr %11, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %13) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %14) #3
  %16 = load ptr, ptr %8, align 8, !tbaa !9
  %17 = icmp ne ptr %16, null
  br i1 %17, label %18, label %21

18:                                               ; preds = %5
  %19 = load ptr, ptr %9, align 8, !tbaa !9
  %20 = icmp ne ptr %19, null
  br i1 %20, label %27, label %21

21:                                               ; preds = %18, %5
  br label %22

22:                                               ; preds = %21
  %23 = load ptr, ptr @stderr, align 8, !tbaa !9
  %24 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %23, ptr noundef @.str, ptr noundef @.str.1, i32 noundef 797, ptr noundef @__FUNCTION__.asn1_bit_octets_from_der_ex) #3
  br label %25

25:                                               ; preds = %22
  br label %26

26:                                               ; preds = %25
  store i32 -1, ptr %6, align 4
  store i32 1, ptr %15, align 4
  br label %63

27:                                               ; preds = %18
  %28 = load i32, ptr %7, align 4, !tbaa !5
  %29 = load ptr, ptr %10, align 8, !tbaa !9
  %30 = load ptr, ptr %11, align 8, !tbaa !9
  %31 = call i32 @asn1_bit_string_from_der_ex(i32 noundef %28, ptr noundef %13, ptr noundef %14, ptr noundef %29, ptr noundef %30)
  store i32 %31, ptr %12, align 4, !tbaa !5
  %32 = icmp ne i32 %31, 1
  br i1 %32, label %33, label %47

33:                                               ; preds = %27
  %34 = load i32, ptr %12, align 4, !tbaa !5
  %35 = icmp slt i32 %34, 0
  br i1 %35, label %36, label %42

36:                                               ; preds = %33
  br label %37

37:                                               ; preds = %36
  %38 = load ptr, ptr @stderr, align 8, !tbaa !9
  %39 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %38, ptr noundef @.str, ptr noundef @.str.1, i32 noundef 802, ptr noundef @__FUNCTION__.asn1_bit_octets_from_der_ex) #3
  br label %40

40:                                               ; preds = %37
  br label %41

41:                                               ; preds = %40
  br label %45

42:                                               ; preds = %33
  %43 = load ptr, ptr %8, align 8, !tbaa !9
  store ptr null, ptr %43, align 8, !tbaa !9
  %44 = load ptr, ptr %9, align 8, !tbaa !9
  store i64 0, ptr %44, align 8, !tbaa !11
  br label %45

45:                                               ; preds = %42, %41
  %46 = load i32, ptr %12, align 4, !tbaa !5
  store i32 %46, ptr %6, align 4
  store i32 1, ptr %15, align 4
  br label %63

47:                                               ; preds = %27
  %48 = load i64, ptr %14, align 8, !tbaa !11
  %49 = urem i64 %48, 8
  %50 = icmp ne i64 %49, 0
  br i1 %50, label %51, label %57

51:                                               ; preds = %47
  br label %52

52:                                               ; preds = %51
  %53 = load ptr, ptr @stderr, align 8, !tbaa !9
  %54 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %53, ptr noundef @.str, ptr noundef @.str.1, i32 noundef 811, ptr noundef @__FUNCTION__.asn1_bit_octets_from_der_ex) #3
  br label %55

55:                                               ; preds = %52
  br label %56

56:                                               ; preds = %55
  store i32 -1, ptr %6, align 4
  store i32 1, ptr %15, align 4
  br label %63

57:                                               ; preds = %47
  %58 = load ptr, ptr %13, align 8, !tbaa !9
  %59 = load ptr, ptr %8, align 8, !tbaa !9
  store ptr %58, ptr %59, align 8, !tbaa !9
  %60 = load i64, ptr %14, align 8, !tbaa !11
  %61 = lshr i64 %60, 3
  %62 = load ptr, ptr %9, align 8, !tbaa !9
  store i64 %61, ptr %62, align 8, !tbaa !11
  store i32 1, ptr %6, align 4
  store i32 1, ptr %15, align 4
  br label %63

63:                                               ; preds = %57, %56, %45, %26
  call void @llvm.lifetime.end.p0(i64 8, ptr %14) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #3
  %64 = load i32, ptr %6, align 4
  ret i32 %64
}

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"long", !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"

@stderr = external local_unnamed_addr global ptr, align 8
@.str = external hidden unnamed_addr constant [13 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [58 x i8], align 1
@__FUNCTION__.asn1_bit_octets_from_der_ex = external hidden unnamed_addr constant [28 x i8], align 1

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) 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 i32 @asn1_bit_string_from_der_ex(i32 noundef, ptr noundef, ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
define dso_local i32 @asn1_bit_octets_from_der_ex(i32 noundef %0, ptr noundef writeonly %1, ptr noundef writeonly %2, ptr noundef %3, ptr noundef %4) local_unnamed_addr #2 {
  %6 = alloca ptr, align 8
  %7 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %6) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %7) #3
  %8 = icmp ne ptr %1, null
  %9 = icmp ne ptr %2, null
  %or.cond = and i1 %8, %9
  br i1 %or.cond, label %13, label %10

10:                                               ; preds = %5
  %11 = load ptr, ptr @stderr, align 8, !tbaa !5
  %12 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %11, ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i32 noundef 797, ptr noundef nonnull @__FUNCTION__.asn1_bit_octets_from_der_ex) #4
  br label %30

13:                                               ; preds = %5
  %14 = call i32 @asn1_bit_string_from_der_ex(i32 noundef %0, ptr noundef nonnull %6, ptr noundef nonnull %7, ptr noundef %3, ptr noundef %4)
  %.not = icmp eq i32 %14, 1
  br i1 %.not, label %21, label %15

15:                                               ; preds = %13
  %16 = icmp slt i32 %14, 0
  br i1 %16, label %17, label %20

17:                                               ; preds = %15
  %18 = load ptr, ptr @stderr, align 8, !tbaa !5
  %19 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %18, ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i32 noundef 802, ptr noundef nonnull @__FUNCTION__.asn1_bit_octets_from_der_ex) #4
  br label %30

20:                                               ; preds = %15
  store ptr null, ptr %1, align 8, !tbaa !5
  store i64 0, ptr %2, align 8, !tbaa !9
  br label %30

21:                                               ; preds = %13
  %22 = load i64, ptr %7, align 8, !tbaa !9
  %23 = and i64 %22, 7
  %.not15 = icmp eq i64 %23, 0
  br i1 %.not15, label %27, label %24

24:                                               ; preds = %21
  %25 = load ptr, ptr @stderr, align 8, !tbaa !5
  %26 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %25, ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i32 noundef 811, ptr noundef nonnull @__FUNCTION__.asn1_bit_octets_from_der_ex) #4
  br label %30

27:                                               ; preds = %21
  %28 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %28, ptr %1, align 8, !tbaa !5
  %29 = lshr exact i64 %22, 3
  store i64 %29, ptr %2, align 8, !tbaa !9
  br label %30

30:                                               ; preds = %17, %20, %27, %24, %10
  %.0 = phi i32 [ -1, %24 ], [ 1, %27 ], [ -1, %10 ], [ %14, %20 ], [ %14, %17 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %7) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #3
  ret i32 %.0
}

attributes #0 = { nofree 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 #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { nounwind }
attributes #4 = { cold 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}


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