; 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: nounwind uwtable
declare dso_local i64 @xstrarglen(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 nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #2

; Function Attrs: nounwind uwtable
declare dso_local i32 @xstrncpyarg(ptr noundef, i64 noundef, ptr noundef, ptr noundef) #0

; Function Attrs: nounwind uwtable
define dso_local ptr @xstracpyargs(ptr noundef %0, ptr noundef %1, ptr noundef %2) #0 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i64, align 8
  %9 = alloca i32, align 4
  %10 = alloca ptr, align 8
  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 8, ptr %8) #4
  %11 = load ptr, ptr %5, align 8, !tbaa !5
  %12 = load ptr, ptr %6, align 8, !tbaa !5
  %13 = call i64 @xstrarglen(ptr noundef %11, ptr noundef %12)
  store i64 %13, ptr %8, align 8, !tbaa !9
  %14 = load i64, ptr %8, align 8, !tbaa !9
  %15 = icmp ne i64 %14, 0
  br i1 %15, label %17, label %16

16:                                               ; preds = %3
  store ptr null, ptr %4, align 8
  store i32 1, ptr %9, align 4
  br label %43

17:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #4
  %18 = load i64, ptr %8, align 8, !tbaa !9
  %19 = add i64 %18, 1
  store i64 %19, ptr %8, align 8, !tbaa !9
  %20 = call noalias ptr @malloc(i64 noundef %19) #5
  store ptr %20, ptr %10, align 8, !tbaa !5
  %21 = load ptr, ptr %10, align 8, !tbaa !5
  %22 = icmp eq ptr %21, null
  br i1 %22, label %23, label %24

23:                                               ; preds = %17
  store ptr null, ptr %4, align 8
  store i32 1, ptr %9, align 4
  br label %42

24:                                               ; preds = %17
  %25 = load ptr, ptr %10, align 8, !tbaa !5
  %26 = load i64, ptr %8, align 8, !tbaa !9
  %27 = load ptr, ptr %5, align 8, !tbaa !5
  %28 = load ptr, ptr %6, align 8, !tbaa !5
  %29 = call i32 @xstrncpyarg(ptr noundef %25, i64 noundef %26, ptr noundef %27, ptr noundef %28)
  %30 = sext i32 %29 to i64
  %31 = load ptr, ptr %7, align 8, !tbaa !5
  store i64 %30, ptr %31, align 8, !tbaa !9
  %32 = load ptr, ptr %7, align 8, !tbaa !5
  %33 = load i64, ptr %32, align 8, !tbaa !9
  %34 = icmp ule i64 %33, 0
  br i1 %34, label %35, label %40

35:                                               ; preds = %24
  %36 = load ptr, ptr %10, align 8, !tbaa !5
  %37 = icmp ne ptr %36, null
  br i1 %37, label %38, label %40

38:                                               ; preds = %35
  %39 = load ptr, ptr %10, align 8, !tbaa !5
  call void @free(ptr noundef %39) #4
  store ptr null, ptr %4, align 8
  store i32 1, ptr %9, align 4
  br label %42

40:                                               ; preds = %35, %24
  %41 = load ptr, ptr %10, align 8, !tbaa !5
  store ptr %41, ptr %4, align 8
  store i32 1, ptr %9, align 4
  br label %42

42:                                               ; preds = %40, %38, %23
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #4
  br label %43

43:                                               ; preds = %42, %16
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #4
  %44 = load ptr, ptr %4, align 8
  ret ptr %44
}

; Function Attrs: nounwind
declare void @free(ptr noundef) #3

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nounwind allocsize(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 "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 = { nounwind allocsize(0) }

!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}


; 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: nounwind uwtable
declare dso_local i64 @xstrarglen(ptr noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @xstrncpyarg(ptr noundef, i64 noundef, ptr noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local noundef ptr @xstracpyargs(ptr noundef %0, ptr noundef %1, ptr nocapture noundef writeonly %2) local_unnamed_addr #0 {
  %4 = tail call i64 @xstrarglen(ptr noundef %0, ptr noundef %1)
  %.not = icmp eq i64 %4, 0
  br i1 %.not, label %14, label %5

5:                                                ; preds = %3
  %6 = add i64 %4, 1
  %7 = tail call noalias ptr @malloc(i64 noundef %6) #3
  %8 = icmp eq ptr %7, null
  br i1 %8, label %14, label %9

9:                                                ; preds = %5
  %10 = tail call i32 @xstrncpyarg(ptr noundef nonnull %7, i64 noundef %6, ptr noundef %0, ptr noundef %1)
  %11 = sext i32 %10 to i64
  store i64 %11, ptr %2, align 8, !tbaa !5
  %12 = icmp eq i32 %10, 0
  br i1 %12, label %13, label %14

13:                                               ; preds = %9
  tail call void @free(ptr noundef nonnull %7) #4
  br label %14

14:                                               ; preds = %13, %5, %9, %3
  %.1 = phi ptr [ null, %3 ], [ null, %13 ], [ null, %5 ], [ %7, %9 ]
  ret ptr %.1
}

; Function Attrs: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #2

attributes #0 = { 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 #1 = { mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite) "alloc-family"="malloc" "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 = { mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite) "alloc-family"="malloc" "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 allocsize(0) }
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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


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