; LLVM IR from guanzhi/GmSSL :: src (tls13)

; 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.DIGEST_CTX = type { %union.anon.0, ptr }
%union.anon.0 = 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 [59 x i8], align 1
@__FUNCTION__.tls13_derive_secret = external hidden unnamed_addr constant [20 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 nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #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 @tls13_hkdf_expand_label(ptr noundef, ptr noundef, ptr noundef, ptr noundef, i64 noundef, i64 noundef, ptr noundef) #3

; Function Attrs: nounwind uwtable
define dso_local i32 @tls13_derive_secret(ptr noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef %3) #3 {
  %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.DIGEST_CTX, align 8
  %11 = alloca [64 x i8], align 16
  %12 = alloca i64, align 8
  %13 = 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 120, ptr %10) #5
  %14 = load ptr, ptr %8, align 8, !tbaa !5
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %10, ptr align 8 %14, i64 120, i1 false), !tbaa.struct !9
  call void @llvm.lifetime.start.p0(i64 64, ptr %11) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #5
  %15 = getelementptr inbounds [64 x i8], ptr %11, i64 0, i64 0
  %16 = call i32 @digest_finish(ptr noundef %10, ptr noundef %15, ptr noundef %12)
  %17 = icmp ne i32 %16, 1
  br i1 %17, label %29, label %18

18:                                               ; preds = %4
  %19 = load ptr, ptr %8, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.DIGEST_CTX, ptr %19, i32 0, i32 1
  %21 = load ptr, ptr %20, align 8, !tbaa !11
  %22 = load ptr, ptr %6, align 8, !tbaa !5
  %23 = load ptr, ptr %7, align 8, !tbaa !5
  %24 = getelementptr inbounds [64 x i8], ptr %11, i64 0, i64 0
  %25 = load i64, ptr %12, align 8, !tbaa !13
  %26 = load ptr, ptr %9, align 8, !tbaa !5
  %27 = call i32 @tls13_hkdf_expand_label(ptr noundef %21, ptr noundef %22, ptr noundef %23, ptr noundef %24, i64 noundef 32, i64 noundef %25, ptr noundef %26)
  %28 = icmp ne i32 %27, 1
  br i1 %28, label %29, label %35

29:                                               ; preds = %18, %4
  br label %30

30:                                               ; preds = %29
  %31 = load ptr, ptr @stderr, align 8, !tbaa !5
  %32 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %31, ptr noundef @.str, ptr noundef @.str.1, i32 noundef 459, ptr noundef @__FUNCTION__.tls13_derive_secret) #5
  br label %33

33:                                               ; preds = %30
  br label %34

34:                                               ; preds = %33
  store i32 -1, ptr %5, align 4
  store i32 1, ptr %13, align 4
  br label %36

35:                                               ; preds = %18
  store i32 1, ptr %5, align 4
  store i32 1, ptr %13, align 4
  br label %36

36:                                               ; preds = %35, %34
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #5
  call void @llvm.lifetime.end.p0(i64 64, ptr %11) #5
  call void @llvm.lifetime.end.p0(i64 120, ptr %10) #5
  %37 = load i32, ptr %5, align 4
  ret i32 %37
}

declare i32 @digest_finish(ptr noundef, ptr noundef, ptr noundef) #4

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 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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 #4 = { "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 #5 = { 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 = !{i64 0, i64 112, !10, i64 112, i64 8, !5}
!10 = !{!7, !7, i64 0}
!11 = !{!12, !6, i64 112}
!12 = !{!"DIGEST_CTX", !7, i64 0, !6, i64 112}
!13 = !{!14, !14, i64 0}
!14 = !{!"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.DIGEST_CTX = type { %union.anon.0, ptr }
%union.anon.0 = type { %struct.SM3_CTX }
%struct.SM3_CTX = type { [8 x i32], i64, [64 x i8], 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 [59 x i8], align 1
@__FUNCTION__.tls13_derive_secret = external hidden unnamed_addr constant [20 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 nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #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 @tls13_hkdf_expand_label(ptr noundef, ptr noundef, ptr noundef, ptr noundef, i64 noundef, i64 noundef, ptr noundef) local_unnamed_addr #3

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 2) i32 @tls13_derive_secret(ptr noundef %0, ptr noundef %1, ptr nocapture noundef readonly %2, ptr noundef %3) local_unnamed_addr #3 {
  %5 = alloca %struct.DIGEST_CTX, align 8
  %6 = alloca [64 x i8], align 16
  %7 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 120, ptr nonnull %5) #5
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(120) %5, ptr noundef nonnull align 8 dereferenceable(120) %2, i64 120, i1 false), !tbaa.struct !5
  call void @llvm.lifetime.start.p0(i64 64, ptr nonnull %6) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %7) #5
  %8 = call i32 @digest_finish(ptr noundef nonnull %5, ptr noundef nonnull %6, ptr noundef nonnull %7) #5
  %.not = icmp eq i32 %8, 1
  br i1 %.not, label %9, label %14

9:                                                ; preds = %4
  %10 = getelementptr inbounds i8, ptr %2, i64 112
  %11 = load ptr, ptr %10, align 8, !tbaa !11
  %12 = load i64, ptr %7, align 8, !tbaa !13
  %13 = call i32 @tls13_hkdf_expand_label(ptr noundef %11, ptr noundef %0, ptr noundef %1, ptr noundef nonnull %6, i64 noundef 32, i64 noundef %12, ptr noundef %3)
  %.not5 = icmp eq i32 %13, 1
  br i1 %.not5, label %17, label %14

14:                                               ; preds = %4, %9
  %15 = load ptr, ptr @stderr, align 8, !tbaa !9
  %16 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %15, ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i32 noundef 459, ptr noundef nonnull @__FUNCTION__.tls13_derive_secret) #6
  br label %17

17:                                               ; preds = %9, %14
  %.0 = phi i32 [ -1, %14 ], [ 1, %9 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %7) #5
  call void @llvm.lifetime.end.p0(i64 64, ptr nonnull %6) #5
  call void @llvm.lifetime.end.p0(i64 120, ptr nonnull %5) #5
  ret i32 %.0
}

declare i32 @digest_finish(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #4

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 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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 #4 = { "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 #5 = { nounwind }
attributes #6 = { 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 = !{i64 0, i64 112, !6, i64 112, i64 8, !9}
!6 = !{!7, !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}
!11 = !{!12, !10, i64 112}
!12 = !{!"DIGEST_CTX", !7, i64 0, !10, i64 112}
!13 = !{!14, !14, i64 0}
!14 = !{!"long", !7, i64 0}


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