; LLVM IR from HRI-EU/Rcs :: src/RcsCore/Rcs_filters.ll (ZN3Rcs14MedianFilterNDD2Ev)

; 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"

%"class.Rcs::MedianFilterND" = type { ptr, i64, ptr }

@_ZTVN3Rcs14MedianFilterNDE = external dso_local unnamed_addr constant { [10 x ptr] }, align 8

; 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: nobuiltin nounwind
declare void @_ZdaPv(ptr noundef) #1

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN3Rcs14MedianFilterNDD2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) unnamed_addr #2 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca i64, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %4 = load ptr, ptr %2, align 8
  store ptr getelementptr inbounds inrange(-16, 64) ({ [10 x ptr] }, ptr @_ZTVN3Rcs14MedianFilterNDE, i32 0, i32 0, i32 2), ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  store i64 0, ptr %3, align 8, !tbaa !11
  br label %5

5:                                                ; preds = %23, %1
  %6 = load i64, ptr %3, align 8, !tbaa !11
  %7 = getelementptr inbounds %"class.Rcs::MedianFilterND", ptr %4, i32 0, i32 1
  %8 = load i64, ptr %7, align 8, !tbaa !13
  %9 = icmp ult i64 %6, %8
  br i1 %9, label %11, label %10

10:                                               ; preds = %5
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  br label %26

11:                                               ; preds = %5
  %12 = getelementptr inbounds %"class.Rcs::MedianFilterND", ptr %4, i32 0, i32 2
  %13 = load ptr, ptr %12, align 8, !tbaa !15
  %14 = load i64, ptr %3, align 8, !tbaa !11
  %15 = getelementptr inbounds ptr, ptr %13, i64 %14
  %16 = load ptr, ptr %15, align 8, !tbaa !5
  %17 = icmp eq ptr %16, null
  br i1 %17, label %22, label %18

18:                                               ; preds = %11
  %19 = load ptr, ptr %16, align 8, !tbaa !9
  %20 = getelementptr inbounds ptr, ptr %19, i64 1
  %21 = load ptr, ptr %20, align 8
  call void %21(ptr noundef nonnull align 8 dereferenceable(40) %16) #3
  br label %22

22:                                               ; preds = %18, %11
  br label %23

23:                                               ; preds = %22
  %24 = load i64, ptr %3, align 8, !tbaa !11
  %25 = add i64 %24, 1
  store i64 %25, ptr %3, align 8, !tbaa !11
  br label %5, !llvm.loop !16

26:                                               ; preds = %10
  %27 = getelementptr inbounds %"class.Rcs::MedianFilterND", ptr %4, i32 0, i32 2
  %28 = load ptr, ptr %27, align 8, !tbaa !15
  %29 = icmp eq ptr %28, null
  br i1 %29, label %31, label %30

30:                                               ; preds = %26
  call void @_ZdaPv(ptr noundef %28) #4
  br label %31

31:                                               ; preds = %30, %26
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nobuiltin 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 = { mustprogress 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 }
attributes #4 = { builtin 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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"vtable pointer", !8, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = !{!14, !12, i64 8}
!14 = !{!"_ZTSN3Rcs14MedianFilterNDE", !12, i64 8, !6, i64 16}
!15 = !{!14, !6, i64 16}
!16 = distinct !{!16, !17}
!17 = !{!"llvm.loop.mustprogress"}


; 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"

@_ZTVN3Rcs14MedianFilterNDE = external dso_local unnamed_addr constant { [10 x ptr] }, align 8

; Function Attrs: nobuiltin nounwind
declare void @_ZdaPv(ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN3Rcs14MedianFilterNDD2Ev(ptr nocapture noundef nonnull align 8 dereferenceable(24) %0) unnamed_addr #1 align 2 {
  store ptr getelementptr inbounds inrange(-16, 64) (i8, ptr @_ZTVN3Rcs14MedianFilterNDE, i64 16), ptr %0, align 8, !tbaa !5
  %2 = getelementptr inbounds i8, ptr %0, i64 8
  %3 = load i64, ptr %2, align 8, !tbaa !8
  %.not = icmp eq i64 %3, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %1
  %4 = getelementptr inbounds i8, ptr %0, i64 16
  br label %8

._crit_edge:                                      ; preds = %18, %1
  %5 = getelementptr inbounds i8, ptr %0, i64 16
  %6 = load ptr, ptr %5, align 8, !tbaa !13
  %7 = icmp eq ptr %6, null
  br i1 %7, label %23, label %22

8:                                                ; preds = %.lr.ph, %18
  %9 = phi i64 [ %3, %.lr.ph ], [ %19, %18 ]
  %.05 = phi i64 [ 0, %.lr.ph ], [ %20, %18 ]
  %10 = load ptr, ptr %4, align 8, !tbaa !13
  %11 = getelementptr inbounds ptr, ptr %10, i64 %.05
  %12 = load ptr, ptr %11, align 8, !tbaa !14
  %13 = icmp eq ptr %12, null
  br i1 %13, label %18, label %14

14:                                               ; preds = %8
  %15 = load ptr, ptr %12, align 8, !tbaa !5
  %16 = getelementptr inbounds i8, ptr %15, i64 8
  %17 = load ptr, ptr %16, align 8
  tail call void %17(ptr noundef nonnull align 8 dereferenceable(40) %12) #2
  %.pre = load i64, ptr %2, align 8, !tbaa !8
  br label %18

18:                                               ; preds = %8, %14
  %19 = phi i64 [ %9, %8 ], [ %.pre, %14 ]
  %20 = add nuw i64 %.05, 1
  %21 = icmp ult i64 %20, %19
  br i1 %21, label %8, label %._crit_edge, !llvm.loop !15

22:                                               ; preds = %._crit_edge
  tail call void @_ZdaPv(ptr noundef nonnull %6) #3
  br label %23

23:                                               ; preds = %22, %._crit_edge
  ret void
}

attributes #0 = { nobuiltin 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 = { mustprogress 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 }
attributes #3 = { builtin 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 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !10, i64 8}
!9 = !{!"_ZTSN3Rcs14MedianFilterNDE", !10, i64 8, !12, i64 16}
!10 = !{!"long", !11, i64 0}
!11 = !{!"omnipotent char", !7, i64 0}
!12 = !{!"any pointer", !11, i64 0}
!13 = !{!9, !12, i64 16}
!14 = !{!12, !12, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass