; 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_nonempty_type_to_der = external hidden unnamed_addr constant [26 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_type_to_der(i32 noundef, ptr noundef, i64 noundef, ptr noundef, ptr noundef) #2

; Function Attrs: nounwind uwtable
define dso_local i32 @asn1_nonempty_type_to_der(i32 noundef %0, ptr noundef %1, i64 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 i64, align 8
  %10 = alloca ptr, align 8
  %11 = alloca ptr, align 8
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  store i32 %0, ptr %7, align 4, !tbaa !5
  store ptr %1, ptr %8, align 8, !tbaa !9
  store i64 %2, ptr %9, align 8, !tbaa !11
  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
  %14 = load ptr, ptr %8, align 8, !tbaa !9
  %15 = icmp ne ptr %14, null
  br i1 %15, label %16, label %25

16:                                               ; preds = %5
  %17 = load i64, ptr %9, align 8, !tbaa !11
  %18 = icmp eq i64 %17, 0
  br i1 %18, label %19, label %25

19:                                               ; preds = %16
  br label %20

20:                                               ; preds = %19
  %21 = load ptr, ptr @stderr, align 8, !tbaa !9
  %22 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %21, ptr noundef @.str, ptr noundef @.str.1, i32 noundef 352, ptr noundef @__FUNCTION__.asn1_nonempty_type_to_der) #3
  br label %23

23:                                               ; preds = %20
  br label %24

24:                                               ; preds = %23
  store i32 -1, ptr %6, align 4
  store i32 1, ptr %13, align 4
  br label %45

25:                                               ; preds = %16, %5
  %26 = load i32, ptr %7, align 4, !tbaa !5
  %27 = load ptr, ptr %8, align 8, !tbaa !9
  %28 = load i64, ptr %9, align 8, !tbaa !11
  %29 = load ptr, ptr %10, align 8, !tbaa !9
  %30 = load ptr, ptr %11, align 8, !tbaa !9
  %31 = call i32 @asn1_type_to_der(i32 noundef %26, ptr noundef %27, i64 noundef %28, 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 %44

33:                                               ; preds = %25
  %34 = load i32, ptr %12, align 4, !tbaa !5
  %35 = icmp ne 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 356, ptr noundef @__FUNCTION__.asn1_nonempty_type_to_der) #3
  br label %40

40:                                               ; preds = %37
  br label %41

41:                                               ; preds = %40
  br label %42

42:                                               ; preds = %41, %33
  %43 = load i32, ptr %12, align 4, !tbaa !5
  store i32 %43, ptr %6, align 4
  store i32 1, ptr %13, align 4
  br label %45

44:                                               ; preds = %25
  store i32 1, ptr %6, align 4
  store i32 1, ptr %13, align 4
  br label %45

45:                                               ; preds = %44, %42, %24
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #3
  %46 = load i32, ptr %6, align 4
  ret i32 %46
}

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_nonempty_type_to_der = external hidden unnamed_addr constant [26 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: nounwind uwtable
declare dso_local i32 @asn1_type_to_der(i32 noundef, ptr noundef, i64 noundef, ptr noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @asn1_nonempty_type_to_der(i32 noundef %0, ptr noundef %1, i64 noundef %2, ptr noundef %3, ptr noundef %4) local_unnamed_addr #1 {
  %6 = icmp ne ptr %1, null
  %7 = icmp eq i64 %2, 0
  %or.cond = and i1 %6, %7
  br i1 %or.cond, label %.sink.split, label %8

8:                                                ; preds = %5
  %9 = tail call i32 @asn1_type_to_der(i32 noundef %0, ptr noundef %1, i64 noundef %2, ptr noundef %3, ptr noundef %4)
  %switch = icmp ult i32 %9, 2
  br i1 %switch, label %12, label %.sink.split

.sink.split:                                      ; preds = %8, %5
  %.sink12 = phi i32 [ 352, %5 ], [ 356, %8 ]
  %.0.ph = phi i32 [ -1, %5 ], [ %9, %8 ]
  %10 = load ptr, ptr @stderr, align 8, !tbaa !5
  %11 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %10, ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i32 noundef %.sink12, ptr noundef nonnull @__FUNCTION__.asn1_nonempty_type_to_der) #2
  br label %12

12:                                               ; preds = %8, %.sink.split
  %.0 = phi i32 [ %9, %8 ], [ %.0.ph, %.sink.split ]
  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 = { 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 = { 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"}


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