; LLVM IR from guanzhi/GmSSL :: src (sm2_key)

; 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 [61 x i8], align 1
@.str.11 = external hidden unnamed_addr constant [22 x i8], align 1
@__FUNCTION__.sm2_private_key_info_decrypt_from_pem = external hidden unnamed_addr constant [38 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

declare i32 @asn1_length_is_zero(i64 noundef) #2

declare i32 @pem_read(ptr noundef, ptr noundef, ptr noundef, ptr noundef, i64 noundef) #2

; Function Attrs: nounwind uwtable
declare dso_local i32 @sm2_private_key_info_decrypt_from_der(ptr noundef, ptr noundef, ptr noundef, ptr noundef, ptr noundef, ptr noundef) #3

; Function Attrs: nounwind uwtable
define dso_local i32 @sm2_private_key_info_decrypt_from_pem(ptr noundef %0, ptr noundef %1, ptr noundef %2) #3 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca [512 x i8], align 16
  %9 = alloca ptr, align 8
  %10 = alloca i64, align 8
  %11 = alloca ptr, align 8
  %12 = alloca i64, align 8
  %13 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store ptr %2, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 512, ptr %8) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #4
  %14 = getelementptr inbounds [512 x i8], ptr %8, i64 0, i64 0
  store ptr %14, ptr %9, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #4
  %15 = load ptr, ptr %5, align 8, !tbaa !5
  %16 = icmp ne ptr %15, null
  br i1 %16, label %17, label %23

17:                                               ; preds = %3
  %18 = load ptr, ptr %6, align 8, !tbaa !5
  %19 = icmp ne ptr %18, null
  br i1 %19, label %20, label %23

20:                                               ; preds = %17
  %21 = load ptr, ptr %7, align 8, !tbaa !5
  %22 = icmp ne ptr %21, null
  br i1 %22, label %29, label %23

23:                                               ; preds = %20, %17, %3
  br label %24

24:                                               ; preds = %23
  %25 = load ptr, ptr @stderr, align 8, !tbaa !5
  %26 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %25, ptr noundef @.str, ptr noundef @.str.1, i32 noundef 672, ptr noundef @__FUNCTION__.sm2_private_key_info_decrypt_from_pem) #4
  br label %27

27:                                               ; preds = %24
  br label %28

28:                                               ; preds = %27
  store i32 -1, ptr %4, align 4
  store i32 1, ptr %13, align 4
  br label %50

29:                                               ; preds = %20
  %30 = load ptr, ptr %7, align 8, !tbaa !5
  %31 = getelementptr inbounds [512 x i8], ptr %8, i64 0, i64 0
  %32 = call i32 @pem_read(ptr noundef %30, ptr noundef @.str.11, ptr noundef %31, ptr noundef %10, i64 noundef 512)
  %33 = icmp ne i32 %32, 1
  br i1 %33, label %43, label %34

34:                                               ; preds = %29
  %35 = load ptr, ptr %5, align 8, !tbaa !5
  %36 = load ptr, ptr %6, align 8, !tbaa !5
  %37 = call i32 @sm2_private_key_info_decrypt_from_der(ptr noundef %35, ptr noundef %11, ptr noundef %12, ptr noundef %36, ptr noundef %9, ptr noundef %10)
  %38 = icmp ne i32 %37, 1
  br i1 %38, label %43, label %39

39:                                               ; preds = %34
  %40 = load i64, ptr %10, align 8, !tbaa !9
  %41 = call i32 @asn1_length_is_zero(i64 noundef %40)
  %42 = icmp ne i32 %41, 1
  br i1 %42, label %43, label %49

43:                                               ; preds = %39, %34, %29
  br label %44

44:                                               ; preds = %43
  %45 = load ptr, ptr @stderr, align 8, !tbaa !5
  %46 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %45, ptr noundef @.str, ptr noundef @.str.1, i32 noundef 678, ptr noundef @__FUNCTION__.sm2_private_key_info_decrypt_from_pem) #4
  br label %47

47:                                               ; preds = %44
  br label %48

48:                                               ; preds = %47
  store i32 -1, ptr %4, align 4
  store i32 1, ptr %13, align 4
  br label %50

49:                                               ; preds = %39
  store i32 1, ptr %4, align 4
  store i32 1, ptr %13, align 4
  br label %50

50:                                               ; preds = %49, %48, %28
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #4
  call void @llvm.lifetime.end.p0(i64 512, ptr %8) #4
  %51 = load i32, ptr %4, align 4
  ret i32 %51
}

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 = { "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 = !{!"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}


; 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 [61 x i8], align 1
@.str.11 = external hidden unnamed_addr constant [22 x i8], align 1
@__FUNCTION__.sm2_private_key_info_decrypt_from_pem = external hidden unnamed_addr constant [38 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

declare i32 @asn1_length_is_zero(i64 noundef) local_unnamed_addr #2

declare i32 @pem_read(ptr noundef, ptr noundef, ptr noundef, ptr noundef, i64 noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
declare dso_local i32 @sm2_private_key_info_decrypt_from_der(ptr noundef, ptr noundef, ptr noundef, ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #3

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 2) i32 @sm2_private_key_info_decrypt_from_pem(ptr noundef %0, ptr noundef %1, ptr noundef %2) local_unnamed_addr #3 {
  %4 = alloca [512 x i8], align 16
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 512, ptr nonnull %4) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #4
  store ptr %4, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %6) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %7) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %8) #4
  %9 = icmp ne ptr %0, null
  %10 = icmp ne ptr %1, null
  %or.cond = and i1 %9, %10
  %11 = icmp ne ptr %2, null
  %or.cond3 = and i1 %or.cond, %11
  br i1 %or.cond3, label %12, label %.sink.split

12:                                               ; preds = %3
  %13 = call i32 @pem_read(ptr noundef nonnull %2, ptr noundef nonnull @.str.11, ptr noundef nonnull %4, ptr noundef nonnull %6, i64 noundef 512) #4
  %.not = icmp eq i32 %13, 1
  br i1 %.not, label %14, label %.sink.split

14:                                               ; preds = %12
  %15 = call i32 @sm2_private_key_info_decrypt_from_der(ptr noundef nonnull %0, ptr noundef nonnull %7, ptr noundef nonnull %8, ptr noundef nonnull %1, ptr noundef nonnull %5, ptr noundef nonnull %6)
  %.not12 = icmp eq i32 %15, 1
  br i1 %.not12, label %16, label %.sink.split

16:                                               ; preds = %14
  %17 = load i64, ptr %6, align 8, !tbaa !9
  %18 = call i32 @asn1_length_is_zero(i64 noundef %17) #4
  %.not13 = icmp eq i32 %18, 1
  br i1 %.not13, label %21, label %.sink.split

.sink.split:                                      ; preds = %16, %14, %12, %3
  %.sink14 = phi i32 [ 672, %3 ], [ 678, %12 ], [ 678, %14 ], [ 678, %16 ]
  %19 = load ptr, ptr @stderr, align 8, !tbaa !5
  %20 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %19, ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i32 noundef %.sink14, ptr noundef nonnull @__FUNCTION__.sm2_private_key_info_decrypt_from_pem) #5
  br label %21

21:                                               ; preds = %.sink.split, %16
  %.0 = phi i32 [ 1, %16 ], [ -1, %.sink.split ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %8) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %7) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #4
  call void @llvm.lifetime.end.p0(i64 512, ptr nonnull %4) #4
  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 = { "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 = !{!"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,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,SimplifyCFGPass