; LLVM IR from Zhefan-Xu/onboard_detector :: include/onboard_detector/dbscan.ll (ZN15onboardDetector6DBSCAN3runEv)

; 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.__gnu_cxx::__normal_iterator" = type { ptr }
%"struct.onboardDetector::Point_" = type { float, float, float, i32 }
%"class.onboardDetector::DBSCAN" = type <{ %"class.std::vector", i32, i32, float, [4 x i8] }>
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<onboardDetector::Point_, std::allocator<onboardDetector::Point_>>::_Vector_impl" }
%"struct.std::_Vector_base<onboardDetector::Point_, std::allocator<onboardDetector::Point_>>::_Vector_impl" = type { %"struct.std::_Vector_base<onboardDetector::Point_, std::allocator<onboardDetector::Point_>>::_Vector_impl_data" }
%"struct.std::_Vector_base<onboardDetector::Point_, std::allocator<onboardDetector::Point_>>::_Vector_impl_data" = type { ptr, ptr, ptr }

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_ZN15onboardDetector6DBSCAN3runEv(ptr noundef nonnull align 8 dereferenceable(36) %0) #0 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %5 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %6 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %7 = alloca %"struct.onboardDetector::Point_", align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  %8 = load ptr, ptr %2, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #5
  store i32 1, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #5
  call void @_ZN9__gnu_cxx17__normal_iteratorIPN15onboardDetector6Point_ESt6vectorIS2_SaIS2_EEEC2Ev(ptr noundef nonnull align 8 dereferenceable(8) %4) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #5
  %9 = getelementptr inbounds %"class.onboardDetector::DBSCAN", ptr %8, i32 0, i32 0
  %10 = call ptr @_ZNSt6vectorIN15onboardDetector6Point_ESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %9) #5
  %11 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %5, i32 0, i32 0
  store ptr %10, ptr %11, align 8
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %4, ptr align 8 %5, i64 8, i1 false), !tbaa.struct !11
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #5
  br label %12

12:                                               ; preds = %36, %1
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #5
  %13 = getelementptr inbounds %"class.onboardDetector::DBSCAN", ptr %8, i32 0, i32 0
  %14 = call ptr @_ZNSt6vectorIN15onboardDetector6Point_ESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %13) #5
  %15 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %6, i32 0, i32 0
  store ptr %14, ptr %15, align 8
  %16 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPN15onboardDetector6Point_ESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8) %4, ptr noundef nonnull align 8 dereferenceable(8) %6) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #5
  br i1 %16, label %17, label %38

17:                                               ; preds = %12
  %18 = call noundef ptr @_ZNK9__gnu_cxx17__normal_iteratorIPN15onboardDetector6Point_ESt6vectorIS2_SaIS2_EEEptEv(ptr noundef nonnull align 8 dereferenceable(8) %4) #5
  %19 = getelementptr inbounds %"struct.onboardDetector::Point_", ptr %18, i32 0, i32 3
  %20 = load i32, ptr %19, align 4, !tbaa !12
  %21 = icmp eq i32 %20, -1
  br i1 %21, label %22, label %35

22:                                               ; preds = %17
  %23 = call noundef nonnull align 4 dereferenceable(16) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPN15onboardDetector6Point_ESt6vectorIS2_SaIS2_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %4) #5
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %7, ptr align 4 %23, i64 16, i1 false), !tbaa.struct !15
  %24 = load i32, ptr %3, align 4, !tbaa !9
  %25 = getelementptr inbounds { <2 x float>, i64 }, ptr %7, i32 0, i32 0
  %26 = load <2 x float>, ptr %25, align 4
  %27 = getelementptr inbounds { <2 x float>, i64 }, ptr %7, i32 0, i32 1
  %28 = load i64, ptr %27, align 4
  %29 = call noundef i32 @_ZN15onboardDetector6DBSCAN13expandClusterENS_6Point_Ei(ptr noundef nonnull align 8 dereferenceable(36) %8, <2 x float> %26, i64 %28, i32 noundef %24)
  %30 = icmp ne i32 %29, -3
  br i1 %30, label %31, label %34

31:                                               ; preds = %22
  %32 = load i32, ptr %3, align 4, !tbaa !9
  %33 = add nsw i32 %32, 1
  store i32 %33, ptr %3, align 4, !tbaa !9
  br label %34

34:                                               ; preds = %31, %22
  br label %35

35:                                               ; preds = %34, %17
  br label %36

36:                                               ; preds = %35
  %37 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPN15onboardDetector6Point_ESt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %4) #5
  br label %12, !llvm.loop !17

38:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #5
  ret i32 0
}

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN9__gnu_cxx17__normal_iteratorIPN15onboardDetector6Point_ESt6vectorIS2_SaIS2_EEEC2Ev(ptr noundef nonnull align 8 dereferenceable(8)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIN15onboardDetector6Point_ESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #3

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

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPN15onboardDetector6Point_ESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIN15onboardDetector6Point_ESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNK9__gnu_cxx17__normal_iteratorIPN15onboardDetector6Point_ESt6vectorIS2_SaIS2_EEEptEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN15onboardDetector6DBSCAN13expandClusterENS_6Point_Ei(ptr noundef nonnull align 8 dereferenceable(36), <2 x float>, i64, i32 noundef) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(16) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPN15onboardDetector6Point_ESt6vectorIS2_SaIS2_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPN15onboardDetector6Point_ESt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

attributes #0 = { mustprogress uwtable "min-legal-vector-width"="64" "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 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 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { inlinehint 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 #5 = { 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 = !{i64 0, i64 8, !5}
!12 = !{!13, !10, i64 12}
!13 = !{!"_ZTSN15onboardDetector6Point_E", !14, i64 0, !14, i64 4, !14, i64 8, !10, i64 12}
!14 = !{!"float", !7, i64 0}
!15 = !{i64 0, i64 4, !16, i64 4, i64 4, !16, i64 8, i64 4, !16, i64 12, i64 4, !9}
!16 = !{!14, !14, i64 0}
!17 = distinct !{!17, !18}
!18 = !{!"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.__gnu_cxx::__normal_iterator" = type { ptr }

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_ZN15onboardDetector6DBSCAN3runEv(ptr noundef nonnull align 8 dereferenceable(36) %0) local_unnamed_addr #0 align 2 {
  %2 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %3 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #4
  call void @_ZN9__gnu_cxx17__normal_iteratorIPN15onboardDetector6Point_ESt6vectorIS2_SaIS2_EEEC2Ev(ptr noundef nonnull align 8 dereferenceable(8) %2) #4
  %4 = call ptr @_ZNSt6vectorIN15onboardDetector6Point_ESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #4
  store ptr %4, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #4
  %5 = call ptr @_ZNSt6vectorIN15onboardDetector6Point_ESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #4
  store ptr %5, ptr %3, align 8
  %6 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPN15onboardDetector6Point_ESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8) %2, ptr noundef nonnull align 8 dereferenceable(8) %3) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #4
  br i1 %6, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %1, %15
  %.03 = phi i32 [ %.1, %15 ], [ 1, %1 ]
  %7 = call noundef ptr @_ZNK9__gnu_cxx17__normal_iteratorIPN15onboardDetector6Point_ESt6vectorIS2_SaIS2_EEEptEv(ptr noundef nonnull align 8 dereferenceable(8) %2) #4
  %8 = getelementptr inbounds i8, ptr %7, i64 12
  %9 = load i32, ptr %8, align 4, !tbaa !9
  %10 = icmp eq i32 %9, -1
  br i1 %10, label %11, label %15

11:                                               ; preds = %.lr.ph
  %12 = call noundef nonnull align 4 dereferenceable(16) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPN15onboardDetector6Point_ESt6vectorIS2_SaIS2_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %2) #4
  %.sroa.0.0.copyload = load <2 x float>, ptr %12, align 4
  %.sroa.2.0..sroa_idx = getelementptr inbounds i8, ptr %12, i64 8
  %.sroa.2.0.copyload = load i64, ptr %.sroa.2.0..sroa_idx, align 4
  %13 = call noundef i32 @_ZN15onboardDetector6DBSCAN13expandClusterENS_6Point_Ei(ptr noundef nonnull align 8 dereferenceable(36) %0, <2 x float> %.sroa.0.0.copyload, i64 %.sroa.2.0.copyload, i32 noundef %.03)
  %.not = icmp ne i32 %13, -3
  %14 = zext i1 %.not to i32
  %spec.select = add nsw i32 %.03, %14
  br label %15

15:                                               ; preds = %11, %.lr.ph
  %.1 = phi i32 [ %.03, %.lr.ph ], [ %spec.select, %11 ]
  %16 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPN15onboardDetector6Point_ESt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %2) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #4
  %17 = call ptr @_ZNSt6vectorIN15onboardDetector6Point_ESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #4
  store ptr %17, ptr %3, align 8
  %18 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPN15onboardDetector6Point_ESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8) %2, ptr noundef nonnull align 8 dereferenceable(8) %3) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #4
  br i1 %18, label %.lr.ph, label %._crit_edge, !llvm.loop !13

._crit_edge:                                      ; preds = %15, %1
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #4
  ret i32 0
}

; 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 nounwind uwtable
declare dso_local void @_ZN9__gnu_cxx17__normal_iteratorIPN15onboardDetector6Point_ESt6vectorIS2_SaIS2_EEEC2Ev(ptr noundef nonnull align 8 dereferenceable(8)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIN15onboardDetector6Point_ESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

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

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPN15onboardDetector6Point_ESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIN15onboardDetector6Point_ESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNK9__gnu_cxx17__normal_iteratorIPN15onboardDetector6Point_ESt6vectorIS2_SaIS2_EEEptEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN15onboardDetector6DBSCAN13expandClusterENS_6Point_Ei(ptr noundef nonnull align 8 dereferenceable(36), <2 x float>, i64, i32 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(16) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPN15onboardDetector6Point_ESt6vectorIS2_SaIS2_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPN15onboardDetector6Point_ESt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2 align 2

attributes #0 = { mustprogress uwtable "min-legal-vector-width"="64" "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 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 = { inlinehint 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 #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, !12, i64 12}
!10 = !{!"_ZTSN15onboardDetector6Point_E", !11, i64 0, !11, i64 4, !11, i64 8, !12, i64 12}
!11 = !{!"float", !7, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SROAPass,SimplifyCFGPass