; LLVM IR from guanzhi/GmSSL :: src (sm9_lib)

; 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.SM9_SIGNATURE = type { [4 x i64], %struct.SM9_Z256_POINT }
%struct.SM9_Z256_POINT = type { [4 x i64], [4 x i64], [4 x i64] }
%struct.SM9_SIGN_CTX = type { %struct.SM3_CTX }
%struct.SM3_CTX = type { [8 x i32], i64, [64 x i8], i64 }

@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__.sm9_verify_finish = external hidden unnamed_addr constant [18 x i8], align 1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @sm9_signature_from_der(ptr noundef, ptr noundef, ptr noundef) #2

declare i32 @asn1_length_is_zero(i64 noundef) #3

; Function Attrs: nounwind uwtable
define dso_local i32 @sm9_verify_finish(ptr noundef %0, ptr noundef %1, i64 noundef %2, ptr noundef %3, ptr noundef %4, i64 noundef %5) #2 {
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca i64, align 8
  %11 = alloca ptr, align 8
  %12 = alloca ptr, align 8
  %13 = alloca i64, align 8
  %14 = alloca i32, align 4
  %15 = alloca %struct.SM9_SIGNATURE, align 8
  %16 = alloca i32, align 4
  store ptr %0, ptr %8, align 8, !tbaa !5
  store ptr %1, ptr %9, align 8, !tbaa !5
  store i64 %2, ptr %10, align 8, !tbaa !9
  store ptr %3, ptr %11, align 8, !tbaa !5
  store ptr %4, ptr %12, align 8, !tbaa !5
  store i64 %5, ptr %13, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #4
  call void @llvm.lifetime.start.p0(i64 128, ptr %15) #4
  %17 = call i32 @sm9_signature_from_der(ptr noundef %15, ptr noundef %9, ptr noundef %10)
  %18 = icmp ne i32 %17, 1
  br i1 %18, label %23, label %19

19:                                               ; preds = %6
  %20 = load i64, ptr %10, align 8, !tbaa !9
  %21 = call i32 @asn1_length_is_zero(i64 noundef %20)
  %22 = icmp ne i32 %21, 1
  br i1 %22, label %23, label %29

23:                                               ; preds = %19, %6
  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 184, ptr noundef @__FUNCTION__.sm9_verify_finish) #4
  br label %27

27:                                               ; preds = %24
  br label %28

28:                                               ; preds = %27
  store i32 -1, ptr %7, align 4
  store i32 1, ptr %16, align 4
  br label %45

29:                                               ; preds = %19
  %30 = load ptr, ptr %11, align 8, !tbaa !5
  %31 = load ptr, ptr %12, align 8, !tbaa !5
  %32 = load i64, ptr %13, align 8, !tbaa !9
  %33 = load ptr, ptr %8, align 8, !tbaa !5
  %34 = getelementptr inbounds %struct.SM9_SIGN_CTX, ptr %33, i32 0, i32 0
  %35 = call i32 @sm9_do_verify(ptr noundef %30, ptr noundef %31, i64 noundef %32, ptr noundef %34, ptr noundef %15)
  store i32 %35, ptr %14, align 4, !tbaa !11
  %36 = icmp slt i32 %35, 0
  br i1 %36, label %37, label %43

37:                                               ; preds = %29
  br label %38

38:                                               ; preds = %37
  %39 = load ptr, ptr @stderr, align 8, !tbaa !5
  %40 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %39, ptr noundef @.str, ptr noundef @.str.1, i32 noundef 189, ptr noundef @__FUNCTION__.sm9_verify_finish) #4
  br label %41

41:                                               ; preds = %38
  br label %42

42:                                               ; preds = %41
  store i32 -1, ptr %7, align 4
  store i32 1, ptr %16, align 4
  br label %45

43:                                               ; preds = %29
  %44 = load i32, ptr %14, align 4, !tbaa !11
  store i32 %44, ptr %7, align 4
  store i32 1, ptr %16, align 4
  br label %45

45:                                               ; preds = %43, %42, %28
  call void @llvm.lifetime.end.p0(i64 128, ptr %15) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #4
  %46 = load i32, ptr %7, align 4
  ret i32 %46
}

; Function Attrs: nounwind uwtable
declare dso_local i32 @sm9_do_verify(ptr noundef, ptr noundef, i64 noundef, ptr noundef, ptr noundef) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !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.SM9_SIGNATURE = type { [4 x i64], %struct.SM9_Z256_POINT }
%struct.SM9_Z256_POINT = type { [4 x i64], [4 x i64], [4 x i64] }

@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__.sm9_verify_finish = external hidden unnamed_addr constant [18 x i8], align 1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @sm9_signature_from_der(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #2

declare i32 @asn1_length_is_zero(i64 noundef) local_unnamed_addr #3

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, -2147483648) i32 @sm9_verify_finish(ptr noundef %0, ptr noundef %1, i64 noundef %2, ptr noundef %3, ptr noundef %4, i64 noundef %5) local_unnamed_addr #2 {
  %7 = alloca ptr, align 8
  %8 = alloca i64, align 8
  %9 = alloca %struct.SM9_SIGNATURE, align 8
  store ptr %1, ptr %7, align 8, !tbaa !5
  store i64 %2, ptr %8, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 128, ptr nonnull %9) #4
  %10 = call i32 @sm9_signature_from_der(ptr noundef nonnull %9, ptr noundef nonnull %7, ptr noundef nonnull %8)
  %.not = icmp eq i32 %10, 1
  br i1 %.not, label %11, label %.sink.split

11:                                               ; preds = %6
  %12 = load i64, ptr %8, align 8, !tbaa !9
  %13 = call i32 @asn1_length_is_zero(i64 noundef %12) #4
  %.not6 = icmp eq i32 %13, 1
  br i1 %.not6, label %14, label %.sink.split

14:                                               ; preds = %11
  %15 = call i32 @sm9_do_verify(ptr noundef %3, ptr noundef %4, i64 noundef %5, ptr noundef %0, ptr noundef nonnull %9)
  %16 = icmp slt i32 %15, 0
  br i1 %16, label %.sink.split, label %19

.sink.split:                                      ; preds = %14, %11, %6
  %.sink7 = phi i32 [ 184, %6 ], [ 184, %11 ], [ 189, %14 ]
  %17 = load ptr, ptr @stderr, align 8, !tbaa !5
  %18 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %17, ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i32 noundef %.sink7, ptr noundef nonnull @__FUNCTION__.sm9_verify_finish) #5
  br label %19

19:                                               ; preds = %.sink.split, %14
  %.0 = phi i32 [ %15, %14 ], [ -1, %.sink.split ]
  call void @llvm.lifetime.end.p0(i64 128, ptr nonnull %9) #4
  ret i32 %.0
}

; Function Attrs: nounwind uwtable
declare dso_local i32 @sm9_do_verify(ptr noundef, ptr noundef, i64 noundef, ptr noundef, ptr noundef) local_unnamed_addr #2

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