; LLVM IR from guanzhi/GmSSL :: src (sm2_sign)

; 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"

%struct.SM2_SIGNATURE = type { [32 x i8], [32 x i8] }

@stderr = external global ptr, align 8
@.str = external hidden unnamed_addr constant [13 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [62 x i8], align 1
@__FUNCTION__.sm2_sign = external hidden unnamed_addr constant [9 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local i32 @sm2_do_sign(ptr noundef, 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: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #2

; 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_signature_to_der(ptr noundef, ptr noundef, ptr noundef) #0

; Function Attrs: nounwind uwtable
define dso_local i32 @sm2_sign(ptr noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef %3) #0 {
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca %struct.SM2_SIGNATURE, align 1
  %11 = alloca i32, align 4
  store ptr %0, ptr %6, align 8, !tbaa !5
  store ptr %1, ptr %7, align 8, !tbaa !5
  store ptr %2, ptr %8, align 8, !tbaa !5
  store ptr %3, ptr %9, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 64, ptr %10) #3
  %12 = load ptr, ptr %6, align 8, !tbaa !5
  %13 = icmp ne ptr %12, null
  br i1 %13, label %14, label %23

14:                                               ; preds = %4
  %15 = load ptr, ptr %7, align 8, !tbaa !5
  %16 = icmp ne ptr %15, null
  br i1 %16, label %17, label %23

17:                                               ; preds = %14
  %18 = load ptr, ptr %8, align 8, !tbaa !5
  %19 = icmp ne ptr %18, null
  br i1 %19, label %20, label %23

20:                                               ; preds = %17
  %21 = load ptr, ptr %9, align 8, !tbaa !5
  %22 = icmp ne ptr %21, null
  br i1 %22, label %29, label %23

23:                                               ; preds = %20, %17, %14, %4
  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 399, ptr noundef @__FUNCTION__.sm2_sign) #3
  br label %27

27:                                               ; preds = %24
  br label %28

28:                                               ; preds = %27
  store i32 -1, ptr %5, align 4
  store i32 1, ptr %11, align 4
  br label %52

29:                                               ; preds = %20
  %30 = load ptr, ptr %6, align 8, !tbaa !5
  %31 = load ptr, ptr %7, align 8, !tbaa !5
  %32 = call i32 @sm2_do_sign(ptr noundef %30, ptr noundef %31, ptr noundef %10)
  %33 = icmp ne i32 %32, 1
  br i1 %33, label %34, label %40

34:                                               ; preds = %29
  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 404, ptr noundef @__FUNCTION__.sm2_sign) #3
  br label %38

38:                                               ; preds = %35
  br label %39

39:                                               ; preds = %38
  store i32 -1, ptr %5, align 4
  store i32 1, ptr %11, align 4
  br label %52

40:                                               ; preds = %29
  %41 = load ptr, ptr %9, align 8, !tbaa !5
  store i64 0, ptr %41, align 8, !tbaa !9
  %42 = load ptr, ptr %9, align 8, !tbaa !5
  %43 = call i32 @sm2_signature_to_der(ptr noundef %10, ptr noundef %8, ptr noundef %42)
  %44 = icmp ne i32 %43, 1
  br i1 %44, label %45, label %51

45:                                               ; preds = %40
  br label %46

46:                                               ; preds = %45
  %47 = load ptr, ptr @stderr, align 8, !tbaa !5
  %48 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %47, ptr noundef @.str, ptr noundef @.str.1, i32 noundef 410, ptr noundef @__FUNCTION__.sm2_sign) #3
  br label %49

49:                                               ; preds = %46
  br label %50

50:                                               ; preds = %49
  store i32 -1, ptr %5, align 4
  store i32 1, ptr %11, align 4
  br label %52

51:                                               ; preds = %40
  store i32 1, ptr %5, align 4
  store i32 1, ptr %11, align 4
  br label %52

52:                                               ; preds = %51, %50, %39, %28
  call void @llvm.lifetime.end.p0(i64 64, ptr %10) #3
  %53 = load i32, ptr %5, align 4
  ret i32 %53
}

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #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 = !{!"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"

%struct.SM2_SIGNATURE = type { [32 x i8], [32 x i8] }

@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 [62 x i8], align 1
@__FUNCTION__.sm2_sign = external hidden unnamed_addr constant [9 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local i32 @sm2_do_sign(ptr noundef, ptr noundef, ptr noundef) 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: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; 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_signature_to_der(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 2) i32 @sm2_sign(ptr noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef %3) local_unnamed_addr #0 {
  %5 = alloca ptr, align 8
  %6 = alloca %struct.SM2_SIGNATURE, align 1
  store ptr %2, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 64, ptr nonnull %6) #3
  %7 = insertelement <4 x ptr> poison, ptr %0, i64 0
  %8 = insertelement <4 x ptr> %7, ptr %1, i64 1
  %9 = insertelement <4 x ptr> %8, ptr %2, i64 2
  %10 = insertelement <4 x ptr> %9, ptr %3, i64 3
  %11 = icmp eq <4 x ptr> %10, zeroinitializer
  %12 = bitcast <4 x i1> %11 to i4
  %13 = icmp eq i4 %12, 0
  br i1 %13, label %17, label %14

14:                                               ; preds = %4
  %15 = load ptr, ptr @stderr, align 8, !tbaa !5
  %16 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %15, ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i32 noundef 399, ptr noundef nonnull @__FUNCTION__.sm2_sign) #4
  br label %27

17:                                               ; preds = %4
  %18 = call i32 @sm2_do_sign(ptr noundef nonnull %0, ptr noundef nonnull %1, ptr noundef nonnull %6)
  %.not = icmp eq i32 %18, 1
  br i1 %.not, label %22, label %19

19:                                               ; preds = %17
  %20 = load ptr, ptr @stderr, align 8, !tbaa !5
  %21 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %20, ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i32 noundef 404, ptr noundef nonnull @__FUNCTION__.sm2_sign) #4
  br label %27

22:                                               ; preds = %17
  store i64 0, ptr %3, align 8, !tbaa !9
  %23 = call i32 @sm2_signature_to_der(ptr noundef nonnull %6, ptr noundef nonnull %5, ptr noundef nonnull %3)
  %.not15 = icmp eq i32 %23, 1
  br i1 %.not15, label %27, label %24

24:                                               ; preds = %22
  %25 = load ptr, ptr @stderr, align 8, !tbaa !5
  %26 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %25, ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i32 noundef 410, ptr noundef nonnull @__FUNCTION__.sm2_sign) #4
  br label %27

27:                                               ; preds = %22, %24, %19, %14
  %.0 = phi i32 [ -1, %19 ], [ -1, %24 ], [ -1, %14 ], [ 1, %22 ]
  call void @llvm.lifetime.end.p0(i64 64, ptr nonnull %6) #3
  ret i32 %.0
}

attributes #0 = { 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 #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { nounwind }
attributes #4 = { 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: GlobalDCEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,SLPVectorizerPass,SROAPass,SimplifyCFGPass,TailCallElimPass