; LLVM IR from MRPT/mrpt :: 3rdparty/xspublic/xstypes (xsstring)

; 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.XsString = type { ptr, i64, i64, i64, ptr }

@XsString_append.nullChar = external hidden constant i8, align 1

; Function Attrs: nounwind uwtable
define dso_local void @XsString_append(ptr noundef %0, ptr noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %5 = load ptr, ptr %4, align 8, !tbaa !5
  %6 = icmp ne ptr %5, null
  br i1 %6, label %7, label %26

7:                                                ; preds = %2
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.XsString, ptr %8, i32 0, i32 1
  %10 = load i64, ptr %9, align 8, !tbaa !9
  %11 = icmp ugt i64 %10, 1
  br i1 %11, label %12, label %26

12:                                               ; preds = %7
  %13 = load ptr, ptr %3, align 8, !tbaa !5
  %14 = load ptr, ptr %3, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.XsString, ptr %14, i32 0, i32 1
  %16 = load i64, ptr %15, align 8, !tbaa !9
  %17 = sub i64 %16, 1
  call void @XsArray_erase(ptr noundef %13, i64 noundef %17, i64 noundef 1)
  %18 = load ptr, ptr %3, align 8, !tbaa !5
  %19 = load ptr, ptr %4, align 8, !tbaa !5
  call void @XsArray_append(ptr noundef %18, ptr noundef %19)
  %20 = load ptr, ptr %3, align 8, !tbaa !5
  %21 = load ptr, ptr %4, align 8, !tbaa !5
  %22 = icmp eq ptr %20, %21
  br i1 %22, label %23, label %25

23:                                               ; preds = %12
  %24 = load ptr, ptr %3, align 8, !tbaa !5
  call void @XsArray_insert(ptr noundef %24, i64 noundef -1, i64 noundef 1, ptr noundef @XsString_append.nullChar)
  br label %25

25:                                               ; preds = %23, %12
  br label %26

26:                                               ; preds = %25, %7, %2
  ret void
}

declare void @XsArray_erase(ptr noundef, i64 noundef, i64 noundef) #1

declare void @XsArray_append(ptr noundef, ptr noundef) #1

declare void @XsArray_insert(ptr noundef, i64 noundef, i64 noundef, ptr noundef) #1

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 = { "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" }

!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, !11, i64 8}
!10 = !{!"XsString", !6, i64 0, !11, i64 8, !11, i64 16, !11, i64 24, !6, i64 32}
!11 = !{!"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"

@XsString_append.nullChar = external hidden constant i8, align 1

; Function Attrs: nounwind uwtable
define dso_local void @XsString_append(ptr noundef %0, ptr noundef %1) local_unnamed_addr #0 {
  %.not = icmp eq ptr %1, null
  br i1 %.not, label %13, label %3

3:                                                ; preds = %2
  %4 = getelementptr inbounds i8, ptr %1, i64 8
  %5 = load i64, ptr %4, align 8, !tbaa !5
  %6 = icmp ugt i64 %5, 1
  br i1 %6, label %7, label %13

7:                                                ; preds = %3
  %8 = getelementptr inbounds i8, ptr %0, i64 8
  %9 = load i64, ptr %8, align 8, !tbaa !5
  %10 = add i64 %9, -1
  tail call void @XsArray_erase(ptr noundef %0, i64 noundef %10, i64 noundef 1) #2
  tail call void @XsArray_append(ptr noundef %0, ptr noundef nonnull %1) #2
  %11 = icmp eq ptr %0, %1
  br i1 %11, label %12, label %13

12:                                               ; preds = %7
  tail call void @XsArray_insert(ptr noundef nonnull %0, i64 noundef -1, i64 noundef 1, ptr noundef nonnull @XsString_append.nullChar) #2
  br label %13

13:                                               ; preds = %7, %12, %3, %2
  ret void
}

declare void @XsArray_erase(ptr noundef, i64 noundef, i64 noundef) local_unnamed_addr #1

declare void @XsArray_append(ptr noundef, ptr noundef) local_unnamed_addr #1

declare void @XsArray_insert(ptr noundef, i64 noundef, i64 noundef, ptr noundef) local_unnamed_addr #1

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 = { "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, !10, i64 8}
!6 = !{!"XsString", !7, i64 0, !10, i64 8, !10, i64 16, !10, i64 24, !7, i64 32}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"long", !8, i64 0}


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