; 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.8 = external hidden unnamed_addr constant [12 x i8], align 1
@__FUNCTION__.sm2_private_key_info_from_pem = external hidden unnamed_addr constant [30 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

; Function Attrs: nounwind uwtable
declare dso_local i32 @sm2_private_key_info_from_der(ptr noundef, ptr noundef, ptr noundef, ptr noundef, ptr noundef) #3

; Function Attrs: nounwind uwtable
define dso_local i32 @sm2_private_key_info_from_pem(ptr noundef %0, ptr noundef %1) #3 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca [512 x i8], align 16
  %7 = alloca ptr, align 8
  %8 = alloca i64, align 8
  %9 = alloca ptr, align 8
  %10 = alloca i64, align 8
  %11 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 512, ptr %6) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #4
  %12 = getelementptr inbounds [512 x i8], ptr %6, i64 0, i64 0
  store ptr %12, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #4
  %13 = load ptr, ptr %5, align 8, !tbaa !5
  %14 = getelementptr inbounds [512 x i8], ptr %6, i64 0, i64 0
  %15 = call i32 @pem_read(ptr noundef %13, ptr noundef @.str.8, ptr noundef %14, ptr noundef %8, i64 noundef 512)
  %16 = icmp ne i32 %15, 1
  br i1 %16, label %25, label %17

17:                                               ; preds = %2
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  %19 = call i32 @sm2_private_key_info_from_der(ptr noundef %18, ptr noundef %9, ptr noundef %10, ptr noundef %7, ptr noundef %8)
  %20 = icmp ne i32 %19, 1
  br i1 %20, label %25, label %21

21:                                               ; preds = %17
  %22 = load i64, ptr %8, align 8, !tbaa !9
  %23 = call i32 @asn1_length_is_zero(i64 noundef %22)
  %24 = icmp ne i32 %23, 1
  br i1 %24, label %25, label %31

25:                                               ; preds = %21, %17, %2
  br label %26

26:                                               ; preds = %25
  %27 = load ptr, ptr @stderr, align 8, !tbaa !5
  %28 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %27, ptr noundef @.str, ptr noundef @.str.1, i32 noundef 399, ptr noundef @__FUNCTION__.sm2_private_key_info_from_pem) #4
  br label %29

29:                                               ; preds = %26
  br label %30

30:                                               ; preds = %29
  store i32 -1, ptr %3, align 4
  store i32 1, ptr %11, align 4
  br label %41

31:                                               ; preds = %21
  %32 = load i64, ptr %10, align 8, !tbaa !9
  %33 = icmp ne i64 %32, 0
  br i1 %33, label %34, label %40

34:                                               ; preds = %31
  br label %35

35:                                               ; preds = %34
  %36 = load ptr, ptr @stderr, align 8, !tbaa !5
  %37 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %36, ptr noundef @.str, ptr noundef @.str.1, i32 noundef 403, ptr noundef @__FUNCTION__.sm2_private_key_info_from_pem) #4
  br label %38

38:                                               ; preds = %35
  br label %39

39:                                               ; preds = %38
  br label %40

40:                                               ; preds = %39, %31
  store i32 1, ptr %3, align 4
  store i32 1, ptr %11, align 4
  br label %41

41:                                               ; preds = %40, %30
  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 8, ptr %8) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 512, ptr %6) #4
  %42 = load i32, ptr %3, align 4
  ret i32 %42
}

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

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.8 = external hidden unnamed_addr constant [12 x i8], align 1
@__FUNCTION__.sm2_private_key_info_from_pem = external hidden unnamed_addr constant [30 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

; Function Attrs: nounwind uwtable
declare dso_local i32 @sm2_private_key_info_from_der(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_from_pem(ptr noundef %0, ptr noundef %1) local_unnamed_addr #3 {
  %3 = alloca [512 x i8], align 16
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 512, ptr nonnull %3) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #4
  store ptr %3, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %6) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %7) #4
  %8 = call i32 @pem_read(ptr noundef %1, ptr noundef nonnull @.str.8, ptr noundef nonnull %3, ptr noundef nonnull %5, i64 noundef 512) #4
  %.not = icmp eq i32 %8, 1
  br i1 %.not, label %9, label %.sink.split

9:                                                ; preds = %2
  %10 = call i32 @sm2_private_key_info_from_der(ptr noundef %0, ptr noundef nonnull %6, ptr noundef nonnull %7, ptr noundef nonnull %4, ptr noundef nonnull %5)
  %.not2 = icmp eq i32 %10, 1
  br i1 %.not2, label %11, label %.sink.split

11:                                               ; preds = %9
  %12 = load i64, ptr %5, align 8, !tbaa !9
  %13 = call i32 @asn1_length_is_zero(i64 noundef %12) #4
  %.not3 = icmp eq i32 %13, 1
  br i1 %.not3, label %14, label %.sink.split

14:                                               ; preds = %11
  %15 = load i64, ptr %7, align 8, !tbaa !9
  %.not4 = icmp eq i64 %15, 0
  br i1 %.not4, label %18, label %.sink.split

.sink.split:                                      ; preds = %14, %11, %9, %2
  %.sink5 = phi i32 [ 399, %2 ], [ 399, %9 ], [ 399, %11 ], [ 403, %14 ]
  %.0.ph = phi i32 [ -1, %2 ], [ -1, %9 ], [ -1, %11 ], [ 1, %14 ]
  %16 = load ptr, ptr @stderr, align 8, !tbaa !5
  %17 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %16, ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i32 noundef %.sink5, ptr noundef nonnull @__FUNCTION__.sm2_private_key_info_from_pem) #5
  br label %18

18:                                               ; preds = %.sink.split, %14
  %.0 = phi i32 [ 1, %14 ], [ %.0.ph, %.sink.split ]
  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 8, ptr nonnull %4) #4
  call void @llvm.lifetime.end.p0(i64 512, ptr nonnull %3) #4
  ret i32 %.0
}

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

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