; LLVM IR from guanzhi/GmSSL :: src (sm9_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"

%struct.SM9_Z256_TWIST_POINT = type { [2 x [4 x i64]], [2 x [4 x i64]], [2 x [4 x 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 [62 x i8], align 1
@__FUNCTION__.sm9_z256_twist_point_from_uncompressed_octets = external hidden unnamed_addr constant [46 x i8], align 1

; Function Attrs: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #0

; Function Attrs: nounwind uwtable
declare dso_local void @sm9_z256_fp2_set_one(ptr noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @sm9_z256_fp2_from_bytes(ptr noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @sm9_z256_twist_point_is_on_curve(ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @sm9_z256_twist_point_from_uncompressed_octets(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %6 = load ptr, ptr %5, align 8, !tbaa !5
  %7 = getelementptr inbounds i8, ptr %6, i64 0
  %8 = load i8, ptr %7, align 1, !tbaa !9
  %9 = zext i8 %8 to i32
  %10 = icmp ne i32 %9, 4
  br i1 %10, label %11, label %16

11:                                               ; preds = %2
  br label %12

12:                                               ; preds = %11
  %13 = load ptr, ptr @stderr, align 8, !tbaa !5
  %14 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %13, ptr noundef @.str, ptr noundef @.str.1, i32 noundef 3181, ptr noundef @__FUNCTION__.sm9_z256_twist_point_from_uncompressed_octets) #2
  br label %15

15:                                               ; preds = %12
  store i32 -1, ptr %3, align 4
  br label %56

16:                                               ; preds = %2
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.SM9_Z256_TWIST_POINT, ptr %17, i32 0, i32 0
  %19 = getelementptr inbounds [2 x [4 x i64]], ptr %18, i64 0, i64 0
  %20 = load ptr, ptr %5, align 8, !tbaa !5
  %21 = getelementptr inbounds i8, ptr %20, i64 1
  %22 = call i32 @sm9_z256_fp2_from_bytes(ptr noundef %19, ptr noundef %21)
  %23 = icmp ne i32 %22, 1
  br i1 %23, label %24, label %29

24:                                               ; preds = %16
  br label %25

25:                                               ; preds = %24
  %26 = load ptr, ptr @stderr, align 8, !tbaa !5
  %27 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %26, ptr noundef @.str, ptr noundef @.str.1, i32 noundef 3186, ptr noundef @__FUNCTION__.sm9_z256_twist_point_from_uncompressed_octets) #2
  br label %28

28:                                               ; preds = %25
  store i32 -1, ptr %3, align 4
  br label %56

29:                                               ; preds = %16
  %30 = load ptr, ptr %4, align 8, !tbaa !5
  %31 = getelementptr inbounds %struct.SM9_Z256_TWIST_POINT, ptr %30, i32 0, i32 1
  %32 = getelementptr inbounds [2 x [4 x i64]], ptr %31, i64 0, i64 0
  %33 = load ptr, ptr %5, align 8, !tbaa !5
  %34 = getelementptr inbounds i8, ptr %33, i64 64
  %35 = getelementptr inbounds i8, ptr %34, i64 1
  %36 = call i32 @sm9_z256_fp2_from_bytes(ptr noundef %32, ptr noundef %35)
  %37 = icmp ne i32 %36, 1
  br i1 %37, label %38, label %43

38:                                               ; preds = %29
  br label %39

39:                                               ; preds = %38
  %40 = load ptr, ptr @stderr, align 8, !tbaa !5
  %41 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %40, ptr noundef @.str, ptr noundef @.str.1, i32 noundef 3190, ptr noundef @__FUNCTION__.sm9_z256_twist_point_from_uncompressed_octets) #2
  br label %42

42:                                               ; preds = %39
  store i32 -1, ptr %3, align 4
  br label %56

43:                                               ; preds = %29
  %44 = load ptr, ptr %4, align 8, !tbaa !5
  %45 = getelementptr inbounds %struct.SM9_Z256_TWIST_POINT, ptr %44, i32 0, i32 2
  %46 = getelementptr inbounds [2 x [4 x i64]], ptr %45, i64 0, i64 0
  call void @sm9_z256_fp2_set_one(ptr noundef %46)
  %47 = load ptr, ptr %4, align 8, !tbaa !5
  %48 = call i32 @sm9_z256_twist_point_is_on_curve(ptr noundef %47)
  %49 = icmp ne i32 %48, 0
  br i1 %49, label %55, label %50

50:                                               ; preds = %43
  br label %51

51:                                               ; preds = %50
  %52 = load ptr, ptr @stderr, align 8, !tbaa !5
  %53 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %52, ptr noundef @.str, ptr noundef @.str.1, i32 noundef 3196, ptr noundef @__FUNCTION__.sm9_z256_twist_point_from_uncompressed_octets) #2
  br label %54

54:                                               ; preds = %51
  store i32 -1, ptr %3, align 4
  br label %56

55:                                               ; preds = %43
  store i32 1, ptr %3, align 4
  br label %56

56:                                               ; preds = %55, %54, %42, %28, %15
  %57 = load i32, ptr %3, align 4
  ret i32 %57
}

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 = { 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 #2 = { 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 = !{!7, !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__.sm9_z256_twist_point_from_uncompressed_octets = external hidden unnamed_addr constant [46 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: nounwind uwtable
declare dso_local void @sm9_z256_fp2_set_one(ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @sm9_z256_fp2_from_bytes(ptr noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @sm9_z256_twist_point_is_on_curve(ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 2) i32 @sm9_z256_twist_point_from_uncompressed_octets(ptr noundef %0, ptr noundef %1) local_unnamed_addr #1 {
  %3 = load i8, ptr %1, align 1, !tbaa !5
  %.not = icmp eq i8 %3, 4
  br i1 %.not, label %4, label %.sink.split

4:                                                ; preds = %2
  %5 = getelementptr inbounds i8, ptr %1, i64 1
  %6 = tail call i32 @sm9_z256_fp2_from_bytes(ptr noundef %0, ptr noundef nonnull %5)
  %.not7 = icmp eq i32 %6, 1
  br i1 %.not7, label %7, label %.sink.split

7:                                                ; preds = %4
  %8 = getelementptr inbounds i8, ptr %0, i64 64
  %9 = getelementptr inbounds i8, ptr %1, i64 65
  %10 = tail call i32 @sm9_z256_fp2_from_bytes(ptr noundef nonnull %8, ptr noundef nonnull %9)
  %.not8 = icmp eq i32 %10, 1
  br i1 %.not8, label %11, label %.sink.split

11:                                               ; preds = %7
  %12 = getelementptr inbounds i8, ptr %0, i64 128
  tail call void @sm9_z256_fp2_set_one(ptr noundef nonnull %12)
  %13 = tail call i32 @sm9_z256_twist_point_is_on_curve(ptr noundef %0)
  %.not9 = icmp eq i32 %13, 0
  br i1 %.not9, label %.sink.split, label %16

.sink.split:                                      ; preds = %11, %7, %4, %2
  %.sink10 = phi i32 [ 3181, %2 ], [ 3186, %4 ], [ 3190, %7 ], [ 3196, %11 ]
  %14 = load ptr, ptr @stderr, align 8, !tbaa !8
  %15 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %14, ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i32 noundef %.sink10, ptr noundef nonnull @__FUNCTION__.sm9_z256_twist_point_from_uncompressed_octets) #2
  br label %16

16:                                               ; preds = %.sink.split, %11
  %.0 = phi i32 [ 1, %11 ], [ -1, %.sink.split ]
  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 = { 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 #2 = { 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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"any pointer", !6, i64 0}


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