; LLVM IR from Discngine/fpocket :: src/qhull/src/libqhullcpp/Coordinates.ll (ZNK8orgQhull11Coordinates5countERKd)

; 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.orgQhull::CoordinatesIterator" = type { ptr, %"class.orgQhull::Coordinates::const_iterator" }
%"class.orgQhull::Coordinates::const_iterator" = type { %"class.__gnu_cxx::__normal_iterator" }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

declare i32 @__gxx_personality_v0(...)

; 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 @_ZN8orgQhull19CoordinatesIteratorC2ERKNS_11CoordinatesE(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_ZN8orgQhull19CoordinatesIterator8findNextERKd(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN8orgQhull19CoordinatesIteratorD2Ev(ptr noundef nonnull align 8 dereferenceable(16)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_ZNK8orgQhull11Coordinates5countERKd(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(8) %1) #1 align 2 personality ptr @__gxx_personality_v0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca %"class.orgQhull::CoordinatesIterator", align 8
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %9 = load ptr, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 16, ptr %5) #3
  call void @_ZN8orgQhull19CoordinatesIteratorC2ERKNS_11CoordinatesE(ptr noundef nonnull align 8 dereferenceable(16) %5, ptr noundef nonnull align 8 dereferenceable(24) %9)
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  store i32 0, ptr %6, align 4, !tbaa !9
  br label %10

10:                                               ; preds = %14, %2
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = invoke noundef zeroext i1 @_ZN8orgQhull19CoordinatesIterator8findNextERKd(ptr noundef nonnull align 8 dereferenceable(16) %5, ptr noundef nonnull align 8 dereferenceable(8) %11)
          to label %13 unwind label %17

13:                                               ; preds = %10
  br i1 %12, label %14, label %21

14:                                               ; preds = %13
  %15 = load i32, ptr %6, align 4, !tbaa !9
  %16 = add nsw i32 %15, 1
  store i32 %16, ptr %6, align 4, !tbaa !9
  br label %10, !llvm.loop !11

17:                                               ; preds = %10
  %18 = landingpad { ptr, i32 }
          cleanup
  %19 = extractvalue { ptr, i32 } %18, 0
  store ptr %19, ptr %7, align 8
  %20 = extractvalue { ptr, i32 } %18, 1
  store i32 %20, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  call void @_ZN8orgQhull19CoordinatesIteratorD2Ev(ptr noundef nonnull align 8 dereferenceable(16) %5) #3
  call void @llvm.lifetime.end.p0(i64 16, ptr %5) #3
  br label %23

21:                                               ; preds = %13
  %22 = load i32, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  call void @_ZN8orgQhull19CoordinatesIteratorD2Ev(ptr noundef nonnull align 8 dereferenceable(16) %5) #3
  call void @llvm.lifetime.end.p0(i64 16, ptr %5) #3
  ret i32 %22

23:                                               ; preds = %17
  %24 = load ptr, ptr %7, align 8
  %25 = load i32, ptr %8, align 4
  %26 = insertvalue { ptr, i32 } poison, ptr %24, 0
  %27 = insertvalue { ptr, i32 } %26, i32 %25, 1
  resume { ptr, i32 } %27
}

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 = { 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"

%"class.orgQhull::CoordinatesIterator" = type { ptr, %"class.orgQhull::Coordinates::const_iterator" }
%"class.orgQhull::Coordinates::const_iterator" = type { %"class.__gnu_cxx::__normal_iterator" }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress 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 @_ZN8orgQhull19CoordinatesIteratorC2ERKNS_11CoordinatesE(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_ZN8orgQhull19CoordinatesIterator8findNextERKd(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN8orgQhull19CoordinatesIteratorD2Ev(ptr noundef nonnull align 8 dereferenceable(16)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_ZNK8orgQhull11Coordinates5countERKd(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(8) %1) local_unnamed_addr #1 align 2 personality ptr @__gxx_personality_v0 {
  %3 = alloca %"class.orgQhull::CoordinatesIterator", align 8
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %3) #3
  call void @_ZN8orgQhull19CoordinatesIteratorC2ERKNS_11CoordinatesE(ptr noundef nonnull align 8 dereferenceable(16) %3, ptr noundef nonnull align 8 dereferenceable(24) %0)
  br label %4

4:                                                ; preds = %7, %2
  %.0 = phi i32 [ 0, %2 ], [ %8, %7 ]
  %5 = invoke noundef zeroext i1 @_ZN8orgQhull19CoordinatesIterator8findNextERKd(ptr noundef nonnull align 8 dereferenceable(16) %3, ptr noundef nonnull align 8 dereferenceable(8) %1)
          to label %6 unwind label %9

6:                                                ; preds = %4
  br i1 %5, label %7, label %11

7:                                                ; preds = %6
  %8 = add nuw nsw i32 %.0, 1
  br label %4, !llvm.loop !5

9:                                                ; preds = %4
  %10 = landingpad { ptr, i32 }
          cleanup
  call void @_ZN8orgQhull19CoordinatesIteratorD2Ev(ptr noundef nonnull align 8 dereferenceable(16) %3) #3
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %3) #3
  resume { ptr, i32 } %10

11:                                               ; preds = %6
  call void @_ZN8orgQhull19CoordinatesIteratorD2Ev(ptr noundef nonnull align 8 dereferenceable(16) %3) #3
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %3) #3
  ret i32 %.0
}

attributes #0 = { mustprogress 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 = { 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LoopUnrollPass,SROAPass,SimplifyCFGPass