; 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_to_der_ex = 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_bit_string_to_der_ex(i32 noundef, ptr noundef, i64 noundef, ptr noundef, ptr noundef) #2

; Function Attrs: nounwind uwtable
define dso_local i32 @asn1_bit_octets_to_der_ex(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 i32, ptr %7, align 4, !tbaa !5
  %15 = load ptr, ptr %8, align 8, !tbaa !9
  %16 = load i64, ptr %9, align 8, !tbaa !11
  %17 = shl i64 %16, 3
  %18 = load ptr, ptr %10, align 8, !tbaa !9
  %19 = load ptr, ptr %11, align 8, !tbaa !9
  %20 = call i32 @asn1_bit_string_to_der_ex(i32 noundef %14, ptr noundef %15, i64 noundef %17, ptr noundef %18, ptr noundef %19)
  store i32 %20, ptr %12, align 4, !tbaa !5
  %21 = icmp ne i32 %20, 1
  br i1 %21, label %22, label %33

22:                                               ; preds = %5
  %23 = load i32, ptr %12, align 4, !tbaa !5
  %24 = icmp ne i32 %23, 0
  br i1 %24, label %25, label %31

25:                                               ; preds = %22
  br label %26

26:                                               ; preds = %25
  %27 = load ptr, ptr @stderr, align 8, !tbaa !9
  %28 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %27, ptr noundef @.str, ptr noundef @.str.1, i32 noundef 784, ptr noundef @__FUNCTION__.asn1_bit_octets_to_der_ex) #3
  br label %29

29:                                               ; preds = %26
  br label %30

30:                                               ; preds = %29
  br label %31

31:                                               ; preds = %30, %22
  %32 = load i32, ptr %12, align 4, !tbaa !5
  store i32 %32, ptr %6, align 4
  store i32 1, ptr %13, align 4
  br label %34

33:                                               ; preds = %5
  store i32 1, ptr %6, align 4
  store i32 1, ptr %13, align 4
  br label %34

34:                                               ; preds = %33, %31
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #3
  %35 = load i32, ptr %6, align 4
  ret i32 %35
}

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_to_der_ex = 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_bit_string_to_der_ex(i32 noundef, ptr noundef, i64 noundef, ptr noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local i32 @asn1_bit_octets_to_der_ex(i32 noundef %0, ptr noundef %1, i64 noundef %2, ptr noundef %3, ptr noundef %4) local_unnamed_addr #1 {
  %6 = shl i64 %2, 3
  %7 = tail call i32 @asn1_bit_string_to_der_ex(i32 noundef %0, ptr noundef %1, i64 noundef %6, ptr noundef %3, ptr noundef %4)
  %switch = icmp ult i32 %7, 2
  br i1 %switch, label %11, label %8

8:                                                ; preds = %5
  %9 = load ptr, ptr @stderr, align 8, !tbaa !5
  %10 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %9, ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i32 noundef 784, ptr noundef nonnull @__FUNCTION__.asn1_bit_octets_to_der_ex) #2
  br label %11

11:                                               ; preds = %5, %8
  ret i32 %7
}

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,SROAPass,SimplifyCFGPass,TailCallElimPass