; LLVM IR from guanzhi/GmSSL :: src (x509_alg)

; 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.ASN1_OID_INFO = type { i32, ptr, ptr, i64, i32, ptr }

@stderr = external global ptr, align 8
@.str = external hidden unnamed_addr constant [13 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [62 x i8], align 1
@x509_sign_algors = external hidden constant [13 x %struct.ASN1_OID_INFO], align 16
@__FUNCTION__.x509_signature_algor_to_der = external hidden unnamed_addr constant [28 x i8], align 1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

declare ptr @asn1_oid_info_from_oid(ptr noundef, i64 noundef, i32 noundef) #1

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

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

declare i32 @asn1_object_identifier_to_der_ex(i32 noundef, ptr noundef, i64 noundef, ptr noundef, ptr noundef) #1

declare i32 @asn1_header_to_der(i32 noundef, i64 noundef, ptr noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @x509_signature_algor_to_der(i32 noundef %0, ptr noundef %1, ptr noundef %2) #3 {
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i64, align 8
  %10 = alloca i32, align 4
  store i32 %0, ptr %5, align 4, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !9
  store ptr %2, ptr %7, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #4
  store i64 0, ptr %9, align 8, !tbaa !11
  %11 = load i32, ptr %5, align 4, !tbaa !5
  %12 = call ptr @asn1_oid_info_from_oid(ptr noundef @x509_sign_algors, i64 noundef 13, i32 noundef %11)
  store ptr %12, ptr %8, align 8, !tbaa !9
  %13 = icmp ne ptr %12, null
  br i1 %13, label %20, label %14

14:                                               ; preds = %3
  br label %15

15:                                               ; preds = %14
  %16 = load ptr, ptr @stderr, align 8, !tbaa !9
  %17 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %16, ptr noundef @.str, ptr noundef @.str.1, i32 noundef 378, ptr noundef @__FUNCTION__.x509_signature_algor_to_der) #4
  br label %18

18:                                               ; preds = %15
  br label %19

19:                                               ; preds = %18
  store i32 -1, ptr %4, align 4
  store i32 1, ptr %10, align 4
  br label %71

20:                                               ; preds = %3
  %21 = load ptr, ptr %8, align 8, !tbaa !9
  %22 = getelementptr inbounds %struct.ASN1_OID_INFO, ptr %21, i32 0, i32 2
  %23 = load ptr, ptr %22, align 8, !tbaa !13
  %24 = load ptr, ptr %8, align 8, !tbaa !9
  %25 = getelementptr inbounds %struct.ASN1_OID_INFO, ptr %24, i32 0, i32 3
  %26 = load i64, ptr %25, align 8, !tbaa !15
  %27 = call i32 @asn1_object_identifier_to_der_ex(i32 noundef 6, ptr noundef %23, i64 noundef %26, ptr noundef null, ptr noundef %9)
  %28 = icmp ne i32 %27, 1
  br i1 %28, label %64, label %29

29:                                               ; preds = %20
  %30 = load ptr, ptr %8, align 8, !tbaa !9
  %31 = getelementptr inbounds %struct.ASN1_OID_INFO, ptr %30, i32 0, i32 4
  %32 = load i32, ptr %31, align 8, !tbaa !16
  %33 = icmp ne i32 %32, 0
  br i1 %33, label %34, label %37

34:                                               ; preds = %29
  %35 = call i32 @asn1_null_to_der(ptr noundef null, ptr noundef %9)
  %36 = icmp ne i32 %35, 1
  br i1 %36, label %64, label %37

37:                                               ; preds = %34, %29
  %38 = load i64, ptr %9, align 8, !tbaa !11
  %39 = load ptr, ptr %6, align 8, !tbaa !9
  %40 = load ptr, ptr %7, align 8, !tbaa !9
  %41 = call i32 @asn1_header_to_der(i32 noundef 48, i64 noundef %38, ptr noundef %39, ptr noundef %40)
  %42 = icmp ne i32 %41, 1
  br i1 %42, label %64, label %43

43:                                               ; preds = %37
  %44 = load ptr, ptr %8, align 8, !tbaa !9
  %45 = getelementptr inbounds %struct.ASN1_OID_INFO, ptr %44, i32 0, i32 2
  %46 = load ptr, ptr %45, align 8, !tbaa !13
  %47 = load ptr, ptr %8, align 8, !tbaa !9
  %48 = getelementptr inbounds %struct.ASN1_OID_INFO, ptr %47, i32 0, i32 3
  %49 = load i64, ptr %48, align 8, !tbaa !15
  %50 = load ptr, ptr %6, align 8, !tbaa !9
  %51 = load ptr, ptr %7, align 8, !tbaa !9
  %52 = call i32 @asn1_object_identifier_to_der_ex(i32 noundef 6, ptr noundef %46, i64 noundef %49, ptr noundef %50, ptr noundef %51)
  %53 = icmp ne i32 %52, 1
  br i1 %53, label %64, label %54

54:                                               ; preds = %43
  %55 = load ptr, ptr %8, align 8, !tbaa !9
  %56 = getelementptr inbounds %struct.ASN1_OID_INFO, ptr %55, i32 0, i32 4
  %57 = load i32, ptr %56, align 8, !tbaa !16
  %58 = icmp ne i32 %57, 0
  br i1 %58, label %59, label %70

59:                                               ; preds = %54
  %60 = load ptr, ptr %6, align 8, !tbaa !9
  %61 = load ptr, ptr %7, align 8, !tbaa !9
  %62 = call i32 @asn1_null_to_der(ptr noundef %60, ptr noundef %61)
  %63 = icmp ne i32 %62, 1
  br i1 %63, label %64, label %70

64:                                               ; preds = %59, %43, %37, %34, %20
  br label %65

65:                                               ; preds = %64
  %66 = load ptr, ptr @stderr, align 8, !tbaa !9
  %67 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %66, ptr noundef @.str, ptr noundef @.str.1, i32 noundef 386, ptr noundef @__FUNCTION__.x509_signature_algor_to_der) #4
  br label %68

68:                                               ; preds = %65
  br label %69

69:                                               ; preds = %68
  store i32 -1, ptr %4, align 4
  store i32 1, ptr %10, align 4
  br label %71

70:                                               ; preds = %59, %54
  store i32 1, ptr %4, align 4
  store i32 1, ptr %10, align 4
  br label %71

71:                                               ; preds = %70, %69, %19
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #4
  %72 = load i32, ptr %4, align 4
  ret i32 %72
}

declare i32 @asn1_null_to_der(ptr noundef, ptr noundef) #1

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { "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 "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 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 #4 = { 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}
!13 = !{!14, !10, i64 16}
!14 = !{!"", !6, i64 0, !10, i64 8, !10, i64 16, !12, i64 24, !6, i64 32, !10, i64 40}
!15 = !{!14, !12, i64 24}
!16 = !{!14, !6, i64 32}


; 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.ASN1_OID_INFO = type { i32, ptr, ptr, i64, i32, ptr }

@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 [62 x i8], align 1
@x509_sign_algors = external hidden constant [13 x %struct.ASN1_OID_INFO], align 16
@__FUNCTION__.x509_signature_algor_to_der = external hidden unnamed_addr constant [28 x i8], align 1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

declare ptr @asn1_oid_info_from_oid(ptr noundef, i64 noundef, i32 noundef) local_unnamed_addr #1

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

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

declare i32 @asn1_object_identifier_to_der_ex(i32 noundef, ptr noundef, i64 noundef, ptr noundef, ptr noundef) local_unnamed_addr #1

declare i32 @asn1_header_to_der(i32 noundef, i64 noundef, ptr noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 2) i32 @x509_signature_algor_to_der(i32 noundef %0, ptr noundef %1, ptr noundef %2) local_unnamed_addr #3 {
  %4 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #4
  store i64 0, ptr %4, align 8, !tbaa !5
  %5 = tail call ptr @asn1_oid_info_from_oid(ptr noundef nonnull @x509_sign_algors, i64 noundef 13, i32 noundef %0) #4
  %.not = icmp eq ptr %5, null
  br i1 %.not, label %6, label %9

6:                                                ; preds = %3
  %7 = load ptr, ptr @stderr, align 8, !tbaa !9
  %8 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %7, ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i32 noundef 378, ptr noundef nonnull @__FUNCTION__.x509_signature_algor_to_der) #5
  br label %34

9:                                                ; preds = %3
  %10 = getelementptr inbounds i8, ptr %5, i64 16
  %11 = load ptr, ptr %10, align 8, !tbaa !11
  %12 = getelementptr inbounds i8, ptr %5, i64 24
  %13 = load i64, ptr %12, align 8, !tbaa !14
  %14 = call i32 @asn1_object_identifier_to_der_ex(i32 noundef 6, ptr noundef %11, i64 noundef %13, ptr noundef null, ptr noundef nonnull %4) #4
  %.not14 = icmp eq i32 %14, 1
  br i1 %.not14, label %15, label %31

15:                                               ; preds = %9
  %16 = getelementptr inbounds i8, ptr %5, i64 32
  %17 = load i32, ptr %16, align 8, !tbaa !15
  %.not15 = icmp eq i32 %17, 0
  br i1 %.not15, label %20, label %18

18:                                               ; preds = %15
  %19 = call i32 @asn1_null_to_der(ptr noundef null, ptr noundef nonnull %4) #4
  %.not16 = icmp eq i32 %19, 1
  br i1 %.not16, label %20, label %31

20:                                               ; preds = %18, %15
  %21 = load i64, ptr %4, align 8, !tbaa !5
  %22 = call i32 @asn1_header_to_der(i32 noundef 48, i64 noundef %21, ptr noundef %1, ptr noundef %2) #4
  %.not17 = icmp eq i32 %22, 1
  br i1 %.not17, label %23, label %31

23:                                               ; preds = %20
  %24 = load ptr, ptr %10, align 8, !tbaa !11
  %25 = load i64, ptr %12, align 8, !tbaa !14
  %26 = call i32 @asn1_object_identifier_to_der_ex(i32 noundef 6, ptr noundef %24, i64 noundef %25, ptr noundef %1, ptr noundef %2) #4
  %.not18 = icmp eq i32 %26, 1
  br i1 %.not18, label %27, label %31

27:                                               ; preds = %23
  %28 = load i32, ptr %16, align 8, !tbaa !15
  %.not19 = icmp eq i32 %28, 0
  br i1 %.not19, label %34, label %29

29:                                               ; preds = %27
  %30 = call i32 @asn1_null_to_der(ptr noundef %1, ptr noundef %2) #4
  %.not20 = icmp eq i32 %30, 1
  br i1 %.not20, label %34, label %31

31:                                               ; preds = %9, %18, %20, %23, %29
  %32 = load ptr, ptr @stderr, align 8, !tbaa !9
  %33 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %32, ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i32 noundef 386, ptr noundef nonnull @__FUNCTION__.x509_signature_algor_to_der) #5
  br label %34

34:                                               ; preds = %27, %29, %31, %6
  %.0 = phi i32 [ -1, %31 ], [ -1, %6 ], [ 1, %29 ], [ 1, %27 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #4
  ret i32 %.0
}

declare i32 @asn1_null_to_der(ptr noundef, ptr noundef) local_unnamed_addr #1

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { "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 = { 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 #3 = { 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 #4 = { nounwind }
attributes #5 = { 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 = !{!"long", !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, !10, i64 16}
!12 = !{!"", !13, i64 0, !10, i64 8, !10, i64 16, !6, i64 24, !13, i64 32, !10, i64 40}
!13 = !{!"int", !7, i64 0}
!14 = !{!12, !6, i64 24}
!15 = !{!12, !13, i64 32}


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