; LLVM IR from Discngine/fpocket :: src/qhull/src/libqhullcpp/Coordinates.ll (ZN8orgQhull11Coordinates6appendEiPd)

; 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::Coordinates" = type { %"class.std::vector" }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl" }
%"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl" = type { %"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl_data" }
%"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl_data" = type { ptr, ptr, 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
define dso_local void @_ZN8orgQhull11Coordinates6appendEiPd(ptr noundef nonnull align 8 dereferenceable(24) %0, i32 noundef %1, ptr noundef %2) #1 align 2 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  store ptr %2, ptr %6, align 8, !tbaa !5
  %9 = load ptr, ptr %4, align 8
  %10 = load ptr, ptr %6, align 8, !tbaa !5
  %11 = icmp ne ptr %10, null
  br i1 %11, label %12, label %27

12:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  %13 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %13, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  store i32 0, ptr %8, align 4, !tbaa !9
  br label %14

14:                                               ; preds = %23, %12
  %15 = load i32, ptr %8, align 4, !tbaa !9
  %16 = load i32, ptr %5, 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 %8) #2
  br label %26

19:                                               ; preds = %14
  %20 = getelementptr inbounds %"class.orgQhull::Coordinates", ptr %9, i32 0, i32 0
  %21 = load ptr, ptr %7, align 8, !tbaa !5
  %22 = getelementptr inbounds double, ptr %21, i32 1
  store ptr %22, ptr %7, align 8, !tbaa !5
  call void @_ZNSt6vectorIdSaIdEE9push_backERKd(ptr noundef nonnull align 8 dereferenceable(24) %20, ptr noundef nonnull align 8 dereferenceable(8) %21)
  br label %23

23:                                               ; preds = %19
  %24 = load i32, ptr %8, align 4, !tbaa !9
  %25 = add nsw i32 %24, 1
  store i32 %25, ptr %8, align 4, !tbaa !9
  br label %14, !llvm.loop !11

26:                                               ; preds = %18
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  br label %27

27:                                               ; preds = %26, %3
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIdSaIdEE9push_backERKd(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(8)) #1 align 2

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 = { 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
define dso_local void @_ZN8orgQhull11Coordinates6appendEiPd(ptr noundef nonnull align 8 dereferenceable(24) %0, i32 noundef %1, ptr noundef %2) local_unnamed_addr #0 align 2 {
  %.not = icmp ne ptr %2, null
  %4 = icmp sgt i32 %1, 0
  %or.cond = and i1 %.not, %4
  br i1 %or.cond, label %.lr.ph, label %.loopexit

.lr.ph:                                           ; preds = %3, %.lr.ph
  %.09 = phi i32 [ %6, %.lr.ph ], [ 0, %3 ]
  %.068 = phi ptr [ %5, %.lr.ph ], [ %2, %3 ]
  %5 = getelementptr inbounds i8, ptr %.068, i64 8
  tail call void @_ZNSt6vectorIdSaIdEE9push_backERKd(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(8) %.068)
  %6 = add nuw nsw i32 %.09, 1
  %exitcond.not = icmp eq i32 %6, %1
  br i1 %exitcond.not, label %.loopexit, label %.lr.ph, !llvm.loop !5

.loopexit:                                        ; preds = %.lr.ph, %3
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIdSaIdEE9push_backERKd(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #0 align 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" }

!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,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass