; LLVM IR from kala13x/libxutils :: src/data (str)

; 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: nounwind
declare i32 @vsnprintf(ptr noundef, i64 noundef, 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 void @xstrnul(ptr noundef) #2

; Function Attrs: nounwind uwtable
define dso_local i32 @xstrncpyarg(ptr noundef %0, i64 noundef %1, ptr noundef %2, ptr noundef %3) #2 {
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca i64, align 8
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca i64, align 8
  %11 = alloca i32, align 4
  store ptr %0, ptr %6, align 8, !tbaa !5
  store i64 %1, ptr %7, align 8, !tbaa !9
  store ptr %2, ptr %8, align 8, !tbaa !5
  store ptr %3, ptr %9, align 8, !tbaa !5
  %12 = load ptr, ptr %6, align 8, !tbaa !5
  %13 = icmp eq ptr %12, null
  br i1 %13, label %17, label %14

14:                                               ; preds = %4
  %15 = load i64, ptr %7, align 8, !tbaa !9
  %16 = icmp ne i64 %15, 0
  br i1 %16, label %18, label %17

17:                                               ; preds = %14, %4
  store i32 -1, ptr %5, align 4
  br label %47

18:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  store i64 0, ptr %10, align 8, !tbaa !9
  %19 = load ptr, ptr %6, align 8, !tbaa !5
  call void @xstrnul(ptr noundef %19)
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #3
  %20 = load ptr, ptr %6, align 8, !tbaa !5
  %21 = load i64, ptr %7, align 8, !tbaa !9
  %22 = load ptr, ptr %8, align 8, !tbaa !5
  %23 = load ptr, ptr %9, align 8, !tbaa !5
  %24 = call i32 @vsnprintf(ptr noundef %20, i64 noundef %21, ptr noundef %22, ptr noundef %23) #3
  store i32 %24, ptr %11, align 4, !tbaa !11
  %25 = load i32, ptr %11, align 4, !tbaa !11
  %26 = icmp sgt i32 %25, 0
  br i1 %26, label %27, label %41

27:                                               ; preds = %18
  %28 = load i32, ptr %11, align 4, !tbaa !11
  %29 = sext i32 %28 to i64
  %30 = load i64, ptr %7, align 8, !tbaa !9
  %31 = sub i64 %30, 1
  %32 = icmp ult i64 %29, %31
  br i1 %32, label %33, label %36

33:                                               ; preds = %27
  %34 = load i32, ptr %11, align 4, !tbaa !11
  %35 = sext i32 %34 to i64
  br label %39

36:                                               ; preds = %27
  %37 = load i64, ptr %7, align 8, !tbaa !9
  %38 = sub i64 %37, 1
  br label %39

39:                                               ; preds = %36, %33
  %40 = phi i64 [ %35, %33 ], [ %38, %36 ]
  store i64 %40, ptr %10, align 8, !tbaa !9
  br label %41

41:                                               ; preds = %39, %18
  %42 = load ptr, ptr %6, align 8, !tbaa !5
  %43 = load i64, ptr %10, align 8, !tbaa !9
  %44 = getelementptr inbounds i8, ptr %42, i64 %43
  store i8 0, ptr %44, align 1, !tbaa !13
  %45 = load i64, ptr %10, align 8, !tbaa !9
  %46 = trunc i64 %45 to i32
  store i32 %46, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  br label %47

47:                                               ; preds = %41, %17
  %48 = load i32, ptr %5, align 4
  ret i32 %48
}

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 = { 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}
!13 = !{!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"

; Function Attrs: nofree nounwind
declare noundef i32 @vsnprintf(ptr nocapture noundef, i64 noundef, ptr nocapture noundef readonly, ptr noundef) local_unnamed_addr #0

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

; Function Attrs: nounwind uwtable
define dso_local i32 @xstrncpyarg(ptr noundef %0, i64 noundef %1, ptr nocapture noundef readonly %2, ptr noundef %3) local_unnamed_addr #1 {
  %5 = icmp ne ptr %0, null
  %6 = icmp ne i64 %1, 0
  %or.cond = and i1 %5, %6
  br i1 %or.cond, label %7, label %15

7:                                                ; preds = %4
  tail call void @xstrnul(ptr noundef nonnull %0)
  %8 = tail call i32 @vsnprintf(ptr noundef nonnull %0, i64 noundef %1, ptr noundef %2, ptr noundef %3) #3
  %9 = icmp sgt i32 %8, 0
  %10 = zext nneg i32 %8 to i64
  %11 = add i64 %1, -1
  %12 = tail call i64 @llvm.umin.i64(i64 %11, i64 %10)
  %.016 = select i1 %9, i64 %12, i64 0
  %13 = getelementptr inbounds i8, ptr %0, i64 %.016
  store i8 0, ptr %13, align 1, !tbaa !5
  %14 = trunc nuw nsw i64 %.016 to i32
  br label %15

15:                                               ; preds = %4, %7
  %.0 = phi i32 [ %14, %7 ], [ -1, %4 ]
  ret i32 %.0
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i64 @llvm.umin.i64(i64, i64) #2

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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}


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