; 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_from_der = 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_type_from_der(i32 noundef, ptr noundef, ptr noundef, ptr noundef, ptr noundef) #2

; Function Attrs: nounwind uwtable
define dso_local i32 @asn1_nonempty_type_from_der(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 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
  %14 = load i32, ptr %7, align 4, !tbaa !5
  %15 = load ptr, ptr %8, align 8, !tbaa !9
  %16 = load ptr, ptr %9, align 8, !tbaa !9
  %17 = load ptr, ptr %10, align 8, !tbaa !9
  %18 = load ptr, ptr %11, align 8, !tbaa !9
  %19 = call i32 @asn1_type_from_der(i32 noundef %14, ptr noundef %15, ptr noundef %16, ptr noundef %17, ptr noundef %18)
  store i32 %19, ptr %12, align 4, !tbaa !5
  %20 = icmp ne i32 %19, 1
  br i1 %20, label %21, label %32

21:                                               ; preds = %5
  %22 = load i32, ptr %12, align 4, !tbaa !5
  %23 = icmp ne i32 %22, 0
  br i1 %23, label %24, label %30

24:                                               ; preds = %21
  br label %25

25:                                               ; preds = %24
  %26 = load ptr, ptr @stderr, align 8, !tbaa !9
  %27 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %26, ptr noundef @.str, ptr noundef @.str.1, i32 noundef 367, ptr noundef @__FUNCTION__.asn1_nonempty_type_from_der) #3
  br label %28

28:                                               ; preds = %25
  br label %29

29:                                               ; preds = %28
  br label %30

30:                                               ; preds = %29, %21
  %31 = load i32, ptr %12, align 4, !tbaa !5
  store i32 %31, ptr %6, align 4
  store i32 1, ptr %13, align 4
  br label %43

32:                                               ; preds = %5
  %33 = load ptr, ptr %9, align 8, !tbaa !9
  %34 = load i64, ptr %33, align 8, !tbaa !11
  %35 = icmp eq i64 %34, 0
  br i1 %35, label %36, label %42

36:                                               ; preds = %32
  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 371, ptr noundef @__FUNCTION__.asn1_nonempty_type_from_der) #3
  br label %40

40:                                               ; preds = %37
  br label %41

41:                                               ; preds = %40
  store i32 -1, ptr %6, align 4
  store i32 1, ptr %13, align 4
  br label %43

42:                                               ; preds = %32
  store i32 1, ptr %6, align 4
  store i32 1, ptr %13, align 4
  br label %43

43:                                               ; preds = %42, %41, %30
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #3
  %44 = load i32, ptr %6, align 4
  ret i32 %44
}

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_from_der = 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: nounwind uwtable
declare dso_local i32 @asn1_type_from_der(i32 noundef, ptr noundef, ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @asn1_nonempty_type_from_der(i32 noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef %3, ptr noundef %4) local_unnamed_addr #1 {
  %6 = tail call i32 @asn1_type_from_der(i32 noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef %3, ptr noundef %4)
  switch i32 %6, label %.sink.split [
    i32 1, label %7
    i32 0, label %12
  ]

7:                                                ; preds = %5
  %8 = load i64, ptr %2, align 8, !tbaa !5
  %9 = icmp eq i64 %8, 0
  br i1 %9, label %.sink.split, label %12

.sink.split:                                      ; preds = %7, %5
  %.sink10 = phi i32 [ 367, %5 ], [ 371, %7 ]
  %.0.ph = phi i32 [ %6, %5 ], [ -1, %7 ]
  %10 = load ptr, ptr @stderr, align 8, !tbaa !9
  %11 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %10, ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i32 noundef %.sink10, ptr noundef nonnull @__FUNCTION__.asn1_nonempty_type_from_der) #2
  br label %12

12:                                               ; preds = %.sink.split, %7, %5
  %.0 = phi i32 [ %6, %5 ], [ 1, %7 ], [ %.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 = !{!"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}


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