; LLVM IR from pixelsdb/mini-pixels :: pixels-core/lib/encoding/RunLenIntEncoder.ll (ZN16RunLenIntEncoder6encodeEPiiiPhRi)

; 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.RunLenIntEncoder = type { i32, i32, i32, i32, i8, i8, i64, i64, i32, i8, i32, i32, i32, ptr, i32, i32, i32, i32, i32, i64, ptr, ptr, ptr, ptr, %class.EncodingUtils, %"class.std::shared_ptr" }
%class.EncodingUtils = type { ptr, ptr }
%"class.std::shared_ptr" = type { %"class.std::__shared_ptr" }
%"class.std::__shared_ptr" = type { ptr, %"class.std::__shared_count" }
%"class.std::__shared_count" = type { ptr }

; 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: mustprogress uwtable
declare dso_local void @_ZN16RunLenIntEncoder5writeEl(ptr noundef nonnull align 8 dereferenceable(168), i64 noundef) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN16RunLenIntEncoder5flushEv(ptr noundef nonnull align 8 dereferenceable(168)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNKSt19__shared_ptr_accessI10ByteBufferLN9__gnu_cxx12_Lock_policyE2ELb0ELb0EEptEv(ptr noundef nonnull align 1 dereferenceable(1)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZN10ByteBuffer11getWritePosEv(ptr noundef nonnull align 8 dereferenceable(62)) #2 align 2

declare void @_ZN10ByteBuffer8getBytesEPhj(ptr noundef nonnull align 8 dereferenceable(62), ptr noundef, i32 noundef) #3

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN16RunLenIntEncoder6encodeEPiiiPhRi(ptr noundef nonnull align 8 dereferenceable(168) %0, ptr noundef %1, i32 noundef %2, i32 noundef %3, ptr noundef %4, ptr noundef nonnull align 4 dereferenceable(4) %5) #1 align 2 {
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca ptr, align 8
  %12 = alloca ptr, align 8
  %13 = alloca i32, align 4
  store ptr %0, ptr %7, align 8, !tbaa !5
  store ptr %1, ptr %8, align 8, !tbaa !5
  store i32 %2, ptr %9, align 4, !tbaa !9
  store i32 %3, ptr %10, align 4, !tbaa !9
  store ptr %4, ptr %11, align 8, !tbaa !5
  store ptr %5, ptr %12, align 8, !tbaa !5
  %14 = load ptr, ptr %7, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #4
  store i32 0, ptr %13, align 4, !tbaa !9
  br label %15

15:                                               ; preds = %29, %6
  %16 = load i32, ptr %13, align 4, !tbaa !9
  %17 = load i32, ptr %10, align 4, !tbaa !9
  %18 = icmp slt i32 %16, %17
  br i1 %18, label %20, label %19

19:                                               ; preds = %15
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #4
  br label %32

20:                                               ; preds = %15
  %21 = load ptr, ptr %8, align 8, !tbaa !5
  %22 = load i32, ptr %13, align 4, !tbaa !9
  %23 = load i32, ptr %9, align 4, !tbaa !9
  %24 = add nsw i32 %22, %23
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds i32, ptr %21, i64 %25
  %27 = load i32, ptr %26, align 4, !tbaa !9
  %28 = sext i32 %27 to i64
  call void @_ZN16RunLenIntEncoder5writeEl(ptr noundef nonnull align 8 dereferenceable(168) %14, i64 noundef %28)
  br label %29

29:                                               ; preds = %20
  %30 = load i32, ptr %13, align 4, !tbaa !9
  %31 = add nsw i32 %30, 1
  store i32 %31, ptr %13, align 4, !tbaa !9
  br label %15, !llvm.loop !11

32:                                               ; preds = %19
  call void @_ZN16RunLenIntEncoder5flushEv(ptr noundef nonnull align 8 dereferenceable(168) %14)
  %33 = getelementptr inbounds %class.RunLenIntEncoder, ptr %14, i32 0, i32 25
  %34 = call noundef ptr @_ZNKSt19__shared_ptr_accessI10ByteBufferLN9__gnu_cxx12_Lock_policyE2ELb0ELb0EEptEv(ptr noundef nonnull align 1 dereferenceable(1) %33) #4
  %35 = call noundef i32 @_ZN10ByteBuffer11getWritePosEv(ptr noundef nonnull align 8 dereferenceable(62) %34)
  %36 = load ptr, ptr %12, align 8, !tbaa !5
  store i32 %35, ptr %36, align 4, !tbaa !9
  %37 = getelementptr inbounds %class.RunLenIntEncoder, ptr %14, i32 0, i32 25
  %38 = call noundef ptr @_ZNKSt19__shared_ptr_accessI10ByteBufferLN9__gnu_cxx12_Lock_policyE2ELb0ELb0EEptEv(ptr noundef nonnull align 1 dereferenceable(1) %37) #4
  %39 = load ptr, ptr %11, align 8, !tbaa !5
  %40 = load ptr, ptr %12, align 8, !tbaa !5
  %41 = load i32, ptr %40, align 4, !tbaa !9
  call void @_ZN10ByteBuffer8getBytesEPhj(ptr noundef nonnull align 8 dereferenceable(62) %38, ptr noundef %39, i32 noundef %41)
  %42 = getelementptr inbounds %class.RunLenIntEncoder, ptr %14, i32 0, i32 25
  %43 = call noundef ptr @_ZNKSt19__shared_ptr_accessI10ByteBufferLN9__gnu_cxx12_Lock_policyE2ELb0ELb0EEptEv(ptr noundef nonnull align 1 dereferenceable(1) %42) #4
  call void @_ZN10ByteBuffer5clearEv(ptr noundef nonnull align 8 dereferenceable(62) %43)
  ret void
}

declare void @_ZN10ByteBuffer5clearEv(ptr noundef nonnull align 8 dereferenceable(62)) #3

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

!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 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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"

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN16RunLenIntEncoder5writeEl(ptr noundef nonnull align 8 dereferenceable(168), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN16RunLenIntEncoder5flushEv(ptr noundef nonnull align 8 dereferenceable(168)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNKSt19__shared_ptr_accessI10ByteBufferLN9__gnu_cxx12_Lock_policyE2ELb0ELb0EEptEv(ptr noundef nonnull align 1 dereferenceable(1)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZN10ByteBuffer11getWritePosEv(ptr noundef nonnull align 8 dereferenceable(62)) local_unnamed_addr #1 align 2

declare void @_ZN10ByteBuffer8getBytesEPhj(ptr noundef nonnull align 8 dereferenceable(62), ptr noundef, i32 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN16RunLenIntEncoder6encodeEPiiiPhRi(ptr noundef nonnull align 8 dereferenceable(168) %0, ptr nocapture noundef readonly %1, i32 noundef %2, i32 noundef %3, ptr noundef %4, ptr nocapture noundef nonnull align 4 dereferenceable(4) %5) local_unnamed_addr #0 align 2 {
  %7 = icmp sgt i32 %3, 0
  br i1 %7, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %6
  %8 = sext i32 %2 to i64
  %wide.trip.count = zext nneg i32 %3 to i64
  %invariant.gep = getelementptr i32, ptr %1, i64 %8
  br label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph, %6
  tail call void @_ZN16RunLenIntEncoder5flushEv(ptr noundef nonnull align 8 dereferenceable(168) %0)
  %9 = getelementptr inbounds i8, ptr %0, i64 152
  %10 = tail call noundef ptr @_ZNKSt19__shared_ptr_accessI10ByteBufferLN9__gnu_cxx12_Lock_policyE2ELb0ELb0EEptEv(ptr noundef nonnull align 1 dereferenceable(1) %9) #3
  %11 = tail call noundef i32 @_ZN10ByteBuffer11getWritePosEv(ptr noundef nonnull align 8 dereferenceable(62) %10)
  store i32 %11, ptr %5, align 4, !tbaa !5
  %12 = tail call noundef ptr @_ZNKSt19__shared_ptr_accessI10ByteBufferLN9__gnu_cxx12_Lock_policyE2ELb0ELb0EEptEv(ptr noundef nonnull align 1 dereferenceable(1) %9) #3
  %13 = load i32, ptr %5, align 4, !tbaa !5
  tail call void @_ZN10ByteBuffer8getBytesEPhj(ptr noundef nonnull align 8 dereferenceable(62) %12, ptr noundef %4, i32 noundef %13)
  %14 = tail call noundef ptr @_ZNKSt19__shared_ptr_accessI10ByteBufferLN9__gnu_cxx12_Lock_policyE2ELb0ELb0EEptEv(ptr noundef nonnull align 1 dereferenceable(1) %9) #3
  tail call void @_ZN10ByteBuffer5clearEv(ptr noundef nonnull align 8 dereferenceable(62) %14)
  ret void

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next, %.lr.ph ]
  %gep = getelementptr i32, ptr %invariant.gep, i64 %indvars.iv
  %15 = load i32, ptr %gep, align 4, !tbaa !5
  %16 = sext i32 %15 to i64
  tail call void @_ZN16RunLenIntEncoder5writeEl(ptr noundef nonnull align 8 dereferenceable(168) %0, i64 noundef %16)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9
}

declare void @_ZN10ByteBuffer5clearEv(ptr noundef nonnull align 8 dereferenceable(62)) local_unnamed_addr #2

attributes #0 = { mustprogress 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 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 = { "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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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