; 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
@__FUNCTION__.sm2_private_key_to_pem = external hidden unnamed_addr constant [23 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [15 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 @sm2_private_key_to_der(ptr noundef, ptr noundef, ptr noundef) #2

declare i32 @pem_write(ptr noundef, ptr noundef, ptr noundef, i64 noundef) #3

; Function Attrs: nounwind uwtable
define dso_local i32 @sm2_private_key_to_pem(ptr noundef %0, ptr noundef %1) #2 {
  %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 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
  %10 = getelementptr inbounds [512 x i8], ptr %6, i64 0, i64 0
  store ptr %10, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #4
  store i64 0, ptr %8, align 8, !tbaa !9
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = call i32 @sm2_private_key_to_der(ptr noundef %11, ptr noundef %7, ptr noundef %8)
  %13 = icmp ne i32 %12, 1
  br i1 %13, label %14, label %20

14:                                               ; preds = %2
  br label %15

15:                                               ; preds = %14
  %16 = load ptr, ptr @stderr, align 8, !tbaa !5
  %17 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %16, ptr noundef @.str, ptr noundef @.str.1, i32 noundef 449, ptr noundef @__FUNCTION__.sm2_private_key_to_pem) #4
  br label %18

18:                                               ; preds = %15
  br label %19

19:                                               ; preds = %18
  store i32 -1, ptr %3, align 4
  store i32 1, ptr %9, align 4
  br label %33

20:                                               ; preds = %2
  %21 = load ptr, ptr %5, align 8, !tbaa !5
  %22 = getelementptr inbounds [512 x i8], ptr %6, i64 0, i64 0
  %23 = load i64, ptr %8, align 8, !tbaa !9
  %24 = call i32 @pem_write(ptr noundef %21, ptr noundef @.str.9, ptr noundef %22, i64 noundef %23)
  %25 = icmp sle i32 %24, 0
  br i1 %25, label %26, label %32

26:                                               ; preds = %20
  br label %27

27:                                               ; preds = %26
  %28 = load ptr, ptr @stderr, align 8, !tbaa !5
  %29 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %28, ptr noundef @.str, ptr noundef @.str.1, i32 noundef 453, ptr noundef @__FUNCTION__.sm2_private_key_to_pem) #4
  br label %30

30:                                               ; preds = %27
  br label %31

31:                                               ; preds = %30
  store i32 -1, ptr %3, align 4
  store i32 1, ptr %9, align 4
  br label %33

32:                                               ; preds = %20
  store i32 1, ptr %3, align 4
  store i32 1, ptr %9, align 4
  br label %33

33:                                               ; preds = %32, %31, %19
  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
  %34 = load i32, ptr %3, align 4
  ret i32 %34
}

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 = { "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
@__FUNCTION__.sm2_private_key_to_pem = external hidden unnamed_addr constant [23 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [15 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

; Function Attrs: nounwind uwtable
declare dso_local i32 @sm2_private_key_to_der(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #2

declare i32 @pem_write(ptr noundef, ptr noundef, ptr noundef, i64 noundef) local_unnamed_addr #3

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 2) i32 @sm2_private_key_to_pem(ptr noundef %0, ptr noundef %1) local_unnamed_addr #2 {
  %3 = alloca [512 x i8], align 16
  %4 = alloca ptr, align 8
  %5 = 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
  store i64 0, ptr %5, align 8, !tbaa !9
  %6 = call i32 @sm2_private_key_to_der(ptr noundef %0, ptr noundef nonnull %4, ptr noundef nonnull %5)
  %.not = icmp eq i32 %6, 1
  br i1 %.not, label %7, label %.sink.split

7:                                                ; preds = %2
  %8 = load i64, ptr %5, align 8, !tbaa !9
  %9 = call i32 @pem_write(ptr noundef %1, ptr noundef nonnull @.str.9, ptr noundef nonnull %3, i64 noundef %8) #4
  %10 = icmp slt i32 %9, 1
  br i1 %10, label %.sink.split, label %13

.sink.split:                                      ; preds = %7, %2
  %.sink2 = phi i32 [ 449, %2 ], [ 453, %7 ]
  %11 = load ptr, ptr @stderr, align 8, !tbaa !5
  %12 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %11, ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i32 noundef %.sink2, ptr noundef nonnull @__FUNCTION__.sm2_private_key_to_pem) #5
  br label %13

13:                                               ; preds = %.sink.split, %7
  %.0 = phi i32 [ 1, %7 ], [ -1, %.sink.split ]
  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
}

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 = { 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 = { "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