; LLVM IR from square/subzero :: core/external-crypto/modes (cwc)

; 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"

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

; 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 @cwc_init_message(ptr noundef, i64 noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @cwc_auth_header(ptr noundef, i64 noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @cwc_compute_tag(ptr noundef, i64 noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @cwc_decrypt(ptr noundef, i64 noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @cwc_decrypt_message(ptr noundef %0, i64 noundef %1, ptr noundef %2, i64 noundef %3, ptr noundef %4, i64 noundef %5, ptr noundef %6, i64 noundef %7, ptr noundef %8) #1 {
  %10 = alloca ptr, align 8
  %11 = alloca i64, align 8
  %12 = alloca ptr, align 8
  %13 = alloca i64, align 8
  %14 = alloca ptr, align 8
  %15 = alloca i64, align 8
  %16 = alloca ptr, align 8
  %17 = alloca i64, align 8
  %18 = alloca ptr, align 8
  %19 = alloca [16 x i8], align 16
  %20 = alloca i32, align 4
  store ptr %0, ptr %10, align 8, !tbaa !5
  store i64 %1, ptr %11, align 8, !tbaa !9
  store ptr %2, ptr %12, align 8, !tbaa !5
  store i64 %3, ptr %13, align 8, !tbaa !9
  store ptr %4, ptr %14, align 8, !tbaa !5
  store i64 %5, ptr %15, align 8, !tbaa !9
  store ptr %6, ptr %16, align 8, !tbaa !5
  store i64 %7, ptr %17, align 8, !tbaa !9
  store ptr %8, ptr %18, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 16, ptr %19) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %20) #3
  %21 = load ptr, ptr %10, align 8, !tbaa !5
  %22 = load i64, ptr %11, align 8, !tbaa !9
  %23 = load ptr, ptr %18, align 8, !tbaa !5
  %24 = call i32 @cwc_init_message(ptr noundef %21, i64 noundef %22, ptr noundef %23)
  %25 = load ptr, ptr %12, align 8, !tbaa !5
  %26 = load i64, ptr %13, align 8, !tbaa !9
  %27 = load ptr, ptr %18, align 8, !tbaa !5
  %28 = call i32 @cwc_auth_header(ptr noundef %25, i64 noundef %26, ptr noundef %27)
  %29 = load ptr, ptr %14, align 8, !tbaa !5
  %30 = load i64, ptr %15, align 8, !tbaa !9
  %31 = load ptr, ptr %18, align 8, !tbaa !5
  %32 = call i32 @cwc_decrypt(ptr noundef %29, i64 noundef %30, ptr noundef %31)
  %33 = getelementptr inbounds [16 x i8], ptr %19, i64 0, i64 0
  %34 = load i64, ptr %17, align 8, !tbaa !9
  %35 = load ptr, ptr %18, align 8, !tbaa !5
  %36 = call i32 @cwc_compute_tag(ptr noundef %33, i64 noundef %34, ptr noundef %35)
  store i32 %36, ptr %20, align 4, !tbaa !11
  %37 = load i32, ptr %20, align 4, !tbaa !11
  %38 = icmp ne i32 %37, 0
  br i1 %38, label %45, label %39

39:                                               ; preds = %9
  %40 = load ptr, ptr %16, align 8, !tbaa !5
  %41 = getelementptr inbounds [16 x i8], ptr %19, i64 0, i64 0
  %42 = load i64, ptr %17, align 8, !tbaa !9
  %43 = call i32 @memcmp(ptr noundef %40, ptr noundef %41, i64 noundef %42) #4
  %44 = icmp ne i32 %43, 0
  br label %45

45:                                               ; preds = %39, %9
  %46 = phi i1 [ true, %9 ], [ %44, %39 ]
  %47 = zext i1 %46 to i64
  %48 = select i1 %46, i32 -1, i32 0
  call void @llvm.lifetime.end.p0(i64 4, ptr %20) #3
  call void @llvm.lifetime.end.p0(i64 16, ptr %19) #3
  ret i32 %48
}

; Function Attrs: nounwind willreturn memory(read)
declare i32 @memcmp(ptr noundef, ptr noundef, i64 noundef) #2

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

!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"

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

; 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 @cwc_init_message(ptr noundef, i64 noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @cwc_auth_header(ptr noundef, i64 noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @cwc_compute_tag(ptr noundef, i64 noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @cwc_decrypt(ptr noundef, i64 noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 1) i32 @cwc_decrypt_message(ptr noundef %0, i64 noundef %1, ptr noundef %2, i64 noundef %3, ptr noundef %4, i64 noundef %5, ptr nocapture noundef readonly %6, i64 noundef %7, ptr noundef %8) local_unnamed_addr #1 {
  %10 = alloca [16 x i8], align 16
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %10) #3
  %11 = tail call i32 @cwc_init_message(ptr noundef %0, i64 noundef %1, ptr noundef %8)
  %12 = tail call i32 @cwc_auth_header(ptr noundef %2, i64 noundef %3, ptr noundef %8)
  %13 = tail call i32 @cwc_decrypt(ptr noundef %4, i64 noundef %5, ptr noundef %8)
  %14 = call i32 @cwc_compute_tag(ptr noundef nonnull %10, i64 noundef %7, ptr noundef %8)
  %.not = icmp eq i32 %14, 0
  br i1 %.not, label %15, label %18

15:                                               ; preds = %9
  %bcmp = call i32 @bcmp(ptr %6, ptr nonnull %10, i64 %7)
  %16 = icmp ne i32 %bcmp, 0
  %17 = sext i1 %16 to i32
  br label %18

18:                                               ; preds = %15, %9
  %19 = phi i32 [ -1, %9 ], [ %17, %15 ]
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %10) #3
  ret i32 %19
}

; Function Attrs: nofree nounwind willreturn memory(argmem: read)
declare i32 @bcmp(ptr nocapture, ptr nocapture, i64) local_unnamed_addr #2

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


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