; 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 }

declare void @XsArray_erase(ptr noundef, i64 noundef, i64 noundef) #0

; Function Attrs: nounwind uwtable
define dso_local void @XsString_erase(ptr noundef %0, i64 noundef %1, i64 noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !9
  store i64 %2, ptr %6, align 8, !tbaa !9
  %7 = load i64, ptr %5, align 8, !tbaa !9
  %8 = load i64, ptr %6, align 8, !tbaa !9
  %9 = add i64 %7, %8
  %10 = load ptr, ptr %4, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.XsString, ptr %10, i32 0, i32 1
  %12 = load i64, ptr %11, align 8, !tbaa !11
  %13 = icmp uge i64 %9, %12
  br i1 %13, label %14, label %32

14:                                               ; preds = %3
  %15 = load i64, ptr %5, align 8, !tbaa !9
  %16 = icmp ne i64 %15, 0
  br i1 %16, label %17, label %26

17:                                               ; preds = %14
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  %19 = load i64, ptr %5, align 8, !tbaa !9
  %20 = load ptr, ptr %4, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.XsString, ptr %20, i32 0, i32 1
  %22 = load i64, ptr %21, align 8, !tbaa !11
  %23 = sub i64 %22, 1
  %24 = load i64, ptr %5, align 8, !tbaa !9
  %25 = sub i64 %23, %24
  call void @XsArray_erase(ptr noundef %18, i64 noundef %19, i64 noundef %25)
  br label %31

26:                                               ; preds = %14
  %27 = load ptr, ptr %4, align 8, !tbaa !5
  %28 = load ptr, ptr %4, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.XsString, ptr %28, i32 0, i32 1
  %30 = load i64, ptr %29, align 8, !tbaa !11
  call void @XsArray_erase(ptr noundef %27, i64 noundef 0, i64 noundef %30)
  br label %31

31:                                               ; preds = %26, %17
  br label %36

32:                                               ; preds = %3
  %33 = load ptr, ptr %4, align 8, !tbaa !5
  %34 = load i64, ptr %5, align 8, !tbaa !9
  %35 = load i64, ptr %6, align 8, !tbaa !9
  call void @XsArray_erase(ptr noundef %33, i64 noundef %34, i64 noundef %35)
  br label %36

36:                                               ; preds = %32, %31
  ret void
}

attributes #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 = { 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" }

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


; 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"

declare void @XsArray_erase(ptr noundef, i64 noundef, i64 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @XsString_erase(ptr noundef %0, i64 noundef %1, i64 noundef %2) local_unnamed_addr #1 {
  %4 = add i64 %2, %1
  %5 = getelementptr inbounds i8, ptr %0, i64 8
  %6 = load i64, ptr %5, align 8, !tbaa !5
  %.not = icmp ult i64 %4, %6
  br i1 %.not, label %12, label %7

7:                                                ; preds = %3
  %.not13 = icmp eq i64 %1, 0
  br i1 %.not13, label %11, label %8

8:                                                ; preds = %7
  %9 = xor i64 %1, -1
  %10 = add i64 %6, %9
  tail call void @XsArray_erase(ptr noundef nonnull %0, i64 noundef %1, i64 noundef %10) #2
  br label %13

11:                                               ; preds = %7
  tail call void @XsArray_erase(ptr noundef nonnull %0, i64 noundef 0, i64 noundef %6) #2
  br label %13

12:                                               ; preds = %3
  tail call void @XsArray_erase(ptr noundef nonnull %0, i64 noundef %1, i64 noundef %2) #2
  br label %13

13:                                               ; preds = %8, %11, %12
  ret void
}

attributes #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 = { 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 }

!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,EarlyCSEPass,GlobalOptPass,InstCombinePass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass