; LLVM IR from guanzhi/GmSSL :: src (sm2_z256)

; 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 [62 x i8], align 1
@__FUNCTION__.sm2_z256_point_from_der = external hidden unnamed_addr constant [24 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 @sm2_z256_point_from_octets(ptr noundef, ptr noundef, i64 noundef) #2

; Function Attrs: nounwind uwtable
define dso_local i32 @sm2_z256_point_from_der(ptr noundef %0, ptr noundef %1, ptr noundef %2) #2 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca ptr, align 8
  %10 = alloca i64, align 8
  %11 = 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 4, 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
  %12 = load ptr, ptr %6, align 8, !tbaa !5
  %13 = load ptr, ptr %7, align 8, !tbaa !5
  %14 = call i32 @asn1_type_from_der(i32 noundef 4, ptr noundef %9, ptr noundef %10, ptr noundef %12, ptr noundef %13)
  store i32 %14, ptr %8, align 4, !tbaa !9
  %15 = icmp ne i32 %14, 1
  br i1 %15, label %16, label %27

16:                                               ; preds = %3
  %17 = load i32, ptr %8, align 4, !tbaa !9
  %18 = icmp slt i32 %17, 0
  br i1 %18, label %19, label %25

19:                                               ; preds = %16
  br label %20

20:                                               ; preds = %19
  %21 = load ptr, ptr @stderr, align 8, !tbaa !5
  %22 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %21, ptr noundef @.str, ptr noundef @.str.1, i32 noundef 1958, ptr noundef @__FUNCTION__.sm2_z256_point_from_der) #4
  br label %23

23:                                               ; preds = %20
  br label %24

24:                                               ; preds = %23
  br label %25

25:                                               ; preds = %24, %16
  %26 = load i32, ptr %8, align 4, !tbaa !9
  store i32 %26, ptr %4, align 4
  store i32 1, ptr %11, align 4
  br label %49

27:                                               ; preds = %3
  %28 = load i64, ptr %10, align 8, !tbaa !11
  %29 = icmp ne i64 %28, 65
  br i1 %29, label %30, label %36

30:                                               ; preds = %27
  br label %31

31:                                               ; preds = %30
  %32 = load ptr, ptr @stderr, align 8, !tbaa !5
  %33 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %32, ptr noundef @.str, ptr noundef @.str.1, i32 noundef 1962, ptr noundef @__FUNCTION__.sm2_z256_point_from_der) #4
  br label %34

34:                                               ; preds = %31
  br label %35

35:                                               ; preds = %34
  store i32 -1, ptr %4, align 4
  store i32 1, ptr %11, align 4
  br label %49

36:                                               ; preds = %27
  %37 = load ptr, ptr %5, align 8, !tbaa !5
  %38 = load ptr, ptr %9, align 8, !tbaa !5
  %39 = load i64, ptr %10, align 8, !tbaa !11
  %40 = call i32 @sm2_z256_point_from_octets(ptr noundef %37, ptr noundef %38, i64 noundef %39)
  %41 = icmp ne i32 %40, 1
  br i1 %41, label %42, label %48

42:                                               ; preds = %36
  br label %43

43:                                               ; preds = %42
  %44 = load ptr, ptr @stderr, align 8, !tbaa !5
  %45 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %44, ptr noundef @.str, ptr noundef @.str.1, i32 noundef 1966, ptr noundef @__FUNCTION__.sm2_z256_point_from_der) #4
  br label %46

46:                                               ; preds = %43
  br label %47

47:                                               ; preds = %46
  store i32 -1, ptr %4, align 4
  store i32 1, ptr %11, align 4
  br label %49

48:                                               ; preds = %36
  store i32 1, ptr %4, align 4
  store i32 1, ptr %11, align 4
  br label %49

49:                                               ; preds = %48, %47, %35, %25
  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 4, ptr %8) #4
  %50 = load i32, ptr %4, align 4
  ret i32 %50
}

declare i32 @asn1_type_from_der(i32 noundef, ptr noundef, ptr noundef, ptr noundef, ptr noundef) #3

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 = !{!"int", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"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 [62 x i8], align 1
@__FUNCTION__.sm2_z256_point_from_der = external hidden unnamed_addr constant [24 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 @sm2_z256_point_from_octets(ptr noundef, ptr noundef, i64 noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
define dso_local i32 @sm2_z256_point_from_der(ptr noundef %0, ptr noundef %1, ptr noundef %2) local_unnamed_addr #2 {
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #4
  %6 = call i32 @asn1_type_from_der(i32 noundef 4, ptr noundef nonnull %4, ptr noundef nonnull %5, ptr noundef %1, ptr noundef %2) #4
  %.not = icmp eq i32 %6, 1
  br i1 %.not, label %9, label %7

7:                                                ; preds = %3
  %8 = icmp slt i32 %6, 0
  br i1 %8, label %.sink.split, label %16

9:                                                ; preds = %3
  %10 = load i64, ptr %5, align 8, !tbaa !5
  %.not7 = icmp eq i64 %10, 65
  br i1 %.not7, label %11, label %.sink.split

11:                                               ; preds = %9
  %12 = load ptr, ptr %4, align 8, !tbaa !9
  %13 = call i32 @sm2_z256_point_from_octets(ptr noundef %0, ptr noundef %12, i64 noundef 65)
  %.not8 = icmp eq i32 %13, 1
  br i1 %.not8, label %16, label %.sink.split

.sink.split:                                      ; preds = %11, %9, %7
  %.sink9 = phi i32 [ 1958, %7 ], [ 1962, %9 ], [ 1966, %11 ]
  %.0.ph = phi i32 [ %6, %7 ], [ -1, %9 ], [ -1, %11 ]
  %14 = load ptr, ptr @stderr, align 8, !tbaa !9
  %15 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %14, ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i32 noundef %.sink9, ptr noundef nonnull @__FUNCTION__.sm2_z256_point_from_der) #5
  br label %16

16:                                               ; preds = %.sink.split, %11, %7
  %.0 = phi i32 [ %6, %7 ], [ 1, %11 ], [ %.0.ph, %.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
  ret i32 %.0
}

declare i32 @asn1_type_from_der(i32 noundef, ptr noundef, ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #3

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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,SimplifyCFGPass