; LLVM IR from pixelsdb/mini-pixels :: pixels-core/lib/utils/BitUtils.ll (ZN8BitUtils16bitWiseCompactBEESt6vectorIhSaIhEEi)

; 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.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<unsigned char, std::allocator<unsigned char>>::_Vector_impl" }
%"struct.std::_Vector_base<unsigned char, std::allocator<unsigned char>>::_Vector_impl" = type { %"struct.std::_Vector_base<unsigned char, std::allocator<unsigned char>>::_Vector_impl_data" }
%"struct.std::_Vector_base<unsigned char, std::allocator<unsigned char>>::_Vector_impl_data" = type { ptr, ptr, ptr }

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIhSaIhEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; 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: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIhSaIhEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN8BitUtils16bitWiseCompactBEESt6vectorIhSaIhEEi(ptr dead_on_unwind noalias writable sret(%"class.std::vector") align 8 %0, ptr noundef %1, i32 noundef %2) #2 align 2 personality ptr @__gxx_personality_v0 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i1, align 1
  %8 = alloca i32, align 4
  %9 = alloca i8, align 1
  %10 = alloca i32, align 4
  %11 = alloca i8, align 1
  %12 = alloca ptr, align 8
  %13 = alloca i32, align 4
  store ptr %0, ptr %4, align 8
  store ptr %1, ptr %5, align 8, !tbaa !5
  store i32 %2, ptr %6, align 4, !tbaa !9
  store i1 false, ptr %7, align 1
  call void @_ZNSt6vectorIhSaIhEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  store i32 8, ptr %8, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 1, ptr %9) #3
  store i8 0, ptr %9, align 1, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #3
  store i32 0, ptr %10, align 4, !tbaa !9
  br label %14

14:                                               ; preds = %44, %3
  %15 = load i32, ptr %10, align 4, !tbaa !9
  %16 = load i32, ptr %6, align 4, !tbaa !9
  %17 = icmp slt i32 %15, %16
  br i1 %17, label %19, label %18

18:                                               ; preds = %14
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  br label %47

19:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 1, ptr %11) #3
  %20 = load i32, ptr %10, align 4, !tbaa !9
  %21 = sext i32 %20 to i64
  %22 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt6vectorIhSaIhEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %21) #3
  %23 = load i8, ptr %22, align 1, !tbaa !11
  store i8 %23, ptr %11, align 1, !tbaa !11
  %24 = load i32, ptr %8, align 4, !tbaa !9
  %25 = add nsw i32 %24, -1
  store i32 %25, ptr %8, align 4, !tbaa !9
  %26 = load i8, ptr %11, align 1, !tbaa !11
  %27 = zext i8 %26 to i32
  %28 = load i32, ptr %8, align 4, !tbaa !9
  %29 = shl i32 %27, %28
  %30 = load i8, ptr %9, align 1, !tbaa !11
  %31 = zext i8 %30 to i32
  %32 = or i32 %31, %29
  %33 = trunc i32 %32 to i8
  store i8 %33, ptr %9, align 1, !tbaa !11
  %34 = load i32, ptr %8, align 4, !tbaa !9
  %35 = icmp eq i32 %34, 0
  br i1 %35, label %36, label %43

36:                                               ; preds = %19
  %37 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt6vectorIhSaIhEE12emplace_backIJRhEEES3_DpOT_(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 1 dereferenceable(1) %9)
          to label %38 unwind label %39

38:                                               ; preds = %36
  store i8 0, ptr %9, align 1, !tbaa !11
  store i32 8, ptr %8, align 4, !tbaa !9
  br label %43

39:                                               ; preds = %36
  %40 = landingpad { ptr, i32 }
          cleanup
  %41 = extractvalue { ptr, i32 } %40, 0
  store ptr %41, ptr %12, align 8
  %42 = extractvalue { ptr, i32 } %40, 1
  store i32 %42, ptr %13, align 4
  call void @llvm.lifetime.end.p0(i64 1, ptr %11) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  br label %59

43:                                               ; preds = %38, %19
  call void @llvm.lifetime.end.p0(i64 1, ptr %11) #3
  br label %44

44:                                               ; preds = %43
  %45 = load i32, ptr %10, align 4, !tbaa !9
  %46 = add nsw i32 %45, 1
  store i32 %46, ptr %10, align 4, !tbaa !9
  br label %14, !llvm.loop !12

47:                                               ; preds = %18
  %48 = load i32, ptr %8, align 4, !tbaa !9
  %49 = icmp ne i32 %48, 8
  br i1 %49, label %50, label %57

50:                                               ; preds = %47
  %51 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt6vectorIhSaIhEE12emplace_backIJRhEEES3_DpOT_(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 1 dereferenceable(1) %9)
          to label %52 unwind label %53

52:                                               ; preds = %50
  br label %57

53:                                               ; preds = %50
  %54 = landingpad { ptr, i32 }
          cleanup
  %55 = extractvalue { ptr, i32 } %54, 0
  store ptr %55, ptr %12, align 8
  %56 = extractvalue { ptr, i32 } %54, 1
  store i32 %56, ptr %13, align 4
  br label %59

57:                                               ; preds = %52, %47
  store i1 true, ptr %7, align 1
  call void @llvm.lifetime.end.p0(i64 1, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  %58 = load i1, ptr %7, align 1
  br i1 %58, label %61, label %60

59:                                               ; preds = %53, %39
  call void @llvm.lifetime.end.p0(i64 1, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  call void @_ZNSt6vectorIhSaIhEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  br label %62

60:                                               ; preds = %57
  call void @_ZNSt6vectorIhSaIhEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  br label %61

61:                                               ; preds = %60, %57
  ret void

62:                                               ; preds = %59
  %63 = load ptr, ptr %12, align 8
  %64 = load i32, ptr %13, align 4
  %65 = insertvalue { ptr, i32 } poison, ptr %63, 0
  %66 = insertvalue { ptr, i32 } %65, i32 %64, 1
  resume { ptr, i32 } %66
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt6vectorIhSaIhEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt6vectorIhSaIhEE12emplace_backIJRhEEES3_DpOT_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 1 dereferenceable(1)) #2 align 2

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #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 = !{!"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 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"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"

%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<unsigned char, std::allocator<unsigned char>>::_Vector_impl" }
%"struct.std::_Vector_base<unsigned char, std::allocator<unsigned char>>::_Vector_impl" = type { %"struct.std::_Vector_base<unsigned char, std::allocator<unsigned char>>::_Vector_impl_data" }
%"struct.std::_Vector_base<unsigned char, std::allocator<unsigned char>>::_Vector_impl_data" = type { ptr, ptr, ptr }

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIhSaIhEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIhSaIhEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN8BitUtils16bitWiseCompactBEESt6vectorIhSaIhEEi(ptr dead_on_unwind noalias nonnull writable sret(%"class.std::vector") align 8 %0, ptr noundef %1, i32 noundef %2) local_unnamed_addr #2 align 2 personality ptr @__gxx_personality_v0 {
  %4 = alloca i8, align 1
  tail call void @_ZNSt6vectorIhSaIhEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %4) #3
  store i8 0, ptr %4, align 1, !tbaa !5
  %5 = icmp sgt i32 %2, 0
  br i1 %5, label %.lr.ph.preheader, label %._crit_edge.thread25

.lr.ph.preheader:                                 ; preds = %3
  %wide.trip.count = zext nneg i32 %2 to i64
  br label %.lr.ph

._crit_edge:                                      ; preds = %20
  %6 = icmp eq i32 %9, 8
  br i1 %6, label %._crit_edge.thread25, label %21

.lr.ph:                                           ; preds = %.lr.ph.backedge, %.lr.ph.preheader
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.be, %.lr.ph.backedge ]
  %.01317 = phi i32 [ 8, %.lr.ph.preheader ], [ %.01317.be, %.lr.ph.backedge ]
  %7 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt6vectorIhSaIhEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %indvars.iv) #3
  %8 = load i8, ptr %7, align 1, !tbaa !5
  %9 = add nsw i32 %.01317, -1
  %10 = zext i8 %8 to i32
  %11 = shl i32 %10, %9
  %12 = load i8, ptr %4, align 1, !tbaa !5
  %13 = trunc i32 %11 to i8
  %14 = or i8 %12, %13
  store i8 %14, ptr %4, align 1, !tbaa !5
  %15 = icmp eq i32 %9, 0
  br i1 %15, label %16, label %20

16:                                               ; preds = %.lr.ph
  %17 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt6vectorIhSaIhEE12emplace_backIJRhEEES3_DpOT_(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 1 dereferenceable(1) %4)
          to label %.thread unwind label %18

18:                                               ; preds = %16
  %19 = landingpad { ptr, i32 }
          cleanup
  br label %25

20:                                               ; preds = %.lr.ph
  %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.backedge

.lr.ph.backedge:                                  ; preds = %20, %.thread
  %indvars.iv.be = phi i64 [ %indvars.iv.next, %20 ], [ %indvars.iv.next22, %.thread ]
  %.01317.be = phi i32 [ %9, %20 ], [ 8, %.thread ]
  br label %.lr.ph, !llvm.loop !8

.thread:                                          ; preds = %16
  store i8 0, ptr %4, align 1, !tbaa !5
  %indvars.iv.next22 = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not23 = icmp eq i64 %indvars.iv.next22, %wide.trip.count
  br i1 %exitcond.not23, label %._crit_edge.thread25, label %.lr.ph.backedge

21:                                               ; preds = %._crit_edge
  %22 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt6vectorIhSaIhEE12emplace_backIJRhEEES3_DpOT_(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 1 dereferenceable(1) %4)
          to label %._crit_edge.thread25 unwind label %23

23:                                               ; preds = %21
  %24 = landingpad { ptr, i32 }
          cleanup
  br label %25

._crit_edge.thread25:                             ; preds = %.thread, %3, %21, %._crit_edge
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #3
  ret void

25:                                               ; preds = %23, %18
  %.pn = phi { ptr, i32 } [ %19, %18 ], [ %24, %23 ]
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #3
  call void @_ZNSt6vectorIhSaIhEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  resume { ptr, i32 } %.pn
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt6vectorIhSaIhEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt6vectorIhSaIhEE12emplace_backIJRhEEES3_DpOT_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 1 dereferenceable(1)) local_unnamed_addr #2 align 2

attributes #0 = { 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 #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = distinct !{!8, !9}
!9 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass