; LLVM IR from niessner/Matterport :: code/gaps/pkgs/RNBasics/RNArray.ll (ZN8RNVArrayaSERKS_)

; 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.RNVArray = type { ptr, i32, i32 }

; Function Attrs: mustprogress uwtable
define dso_local noundef nonnull align 8 dereferenceable(16) ptr @_ZN8RNVArrayaSERKS_(ptr noundef nonnull align 8 dereferenceable(16) %0, ptr noundef nonnull align 8 dereferenceable(16) %1) #0 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %6 = load ptr, ptr %3, align 8
  call void @_ZN8RNVArray5EmptyEi(ptr noundef nonnull align 8 dereferenceable(16) %6, i32 noundef 0)
  %7 = load ptr, ptr %4, align 8, !tbaa !5
  %8 = getelementptr inbounds %class.RNVArray, ptr %7, i32 0, i32 2
  %9 = load i32, ptr %8, align 4, !tbaa !9
  %10 = icmp sgt i32 %9, 0
  br i1 %10, label %11, label %43

11:                                               ; preds = %2
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = getelementptr inbounds %class.RNVArray, ptr %12, i32 0, i32 2
  %14 = load i32, ptr %13, align 4, !tbaa !9
  call void @_ZN8RNVArray6ResizeEi(ptr noundef nonnull align 8 dereferenceable(16) %6, i32 noundef %14)
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  store i32 0, ptr %5, align 4, !tbaa !12
  br label %15

15:                                               ; preds = %35, %11
  %16 = load i32, ptr %5, align 4, !tbaa !12
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = getelementptr inbounds %class.RNVArray, ptr %17, i32 0, i32 2
  %19 = load i32, ptr %18, align 4, !tbaa !9
  %20 = icmp slt i32 %16, %19
  br i1 %20, label %22, label %21

21:                                               ; preds = %15
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  br label %38

22:                                               ; preds = %15
  %23 = load ptr, ptr %4, align 8, !tbaa !5
  %24 = getelementptr inbounds %class.RNVArray, ptr %23, i32 0, i32 0
  %25 = load ptr, ptr %24, align 8, !tbaa !13
  %26 = load i32, ptr %5, align 4, !tbaa !12
  %27 = sext i32 %26 to i64
  %28 = getelementptr inbounds ptr, ptr %25, i64 %27
  %29 = load ptr, ptr %28, align 8, !tbaa !5
  %30 = getelementptr inbounds %class.RNVArray, ptr %6, i32 0, i32 0
  %31 = load ptr, ptr %30, align 8, !tbaa !13
  %32 = load i32, ptr %5, align 4, !tbaa !12
  %33 = sext i32 %32 to i64
  %34 = getelementptr inbounds ptr, ptr %31, i64 %33
  store ptr %29, ptr %34, align 8, !tbaa !5
  br label %35

35:                                               ; preds = %22
  %36 = load i32, ptr %5, align 4, !tbaa !12
  %37 = add nsw i32 %36, 1
  store i32 %37, ptr %5, align 4, !tbaa !12
  br label %15, !llvm.loop !14

38:                                               ; preds = %21
  %39 = load ptr, ptr %4, align 8, !tbaa !5
  %40 = getelementptr inbounds %class.RNVArray, ptr %39, i32 0, i32 2
  %41 = load i32, ptr %40, align 4, !tbaa !9
  %42 = getelementptr inbounds %class.RNVArray, ptr %6, i32 0, i32 2
  store i32 %41, ptr %42, align 4, !tbaa !9
  br label %43

43:                                               ; preds = %38, %2
  ret ptr %6
}

; 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 uwtable
declare dso_local void @_ZN8RNVArray6ResizeEi(ptr noundef nonnull align 8 dereferenceable(16), i32 noundef) #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN8RNVArray5EmptyEi(ptr noundef nonnull align 8 dereferenceable(16), i32 noundef) #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" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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, !11, i64 12}
!10 = !{!"_ZTS8RNVArray", !6, i64 0, !11, i64 8, !11, i64 12}
!11 = !{!"int", !7, i64 0}
!12 = !{!11, !11, i64 0}
!13 = !{!10, !6, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"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 noundef nonnull align 8 dereferenceable(16) ptr @_ZN8RNVArrayaSERKS_(ptr noundef nonnull returned align 8 dereferenceable(16) %0, ptr nocapture noundef nonnull readonly align 8 dereferenceable(16) %1) local_unnamed_addr #0 align 2 {
  tail call void @_ZN8RNVArray5EmptyEi(ptr noundef nonnull align 8 dereferenceable(16) %0, i32 noundef 0)
  %3 = getelementptr inbounds i8, ptr %1, i64 12
  %4 = load i32, ptr %3, align 4, !tbaa !5
  %5 = icmp sgt i32 %4, 0
  br i1 %5, label %6, label %36

6:                                                ; preds = %2
  tail call void @_ZN8RNVArray6ResizeEi(ptr noundef nonnull align 8 dereferenceable(16) %0, i32 noundef %4)
  %7 = load i32, ptr %3, align 4, !tbaa !5
  %8 = icmp sgt i32 %7, 0
  br i1 %8, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %6
  %wide.trip.count = zext nneg i32 %7 to i64
  %xtraiter = and i64 %wide.trip.count, 3
  %9 = icmp ult i32 %7, 4
  br i1 %9, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.preheader.new

.lr.ph.preheader.new:                             ; preds = %.lr.ph.preheader
  %unroll_iter = and i64 %wide.trip.count, 2147483644
  br label %.lr.ph

._crit_edge.loopexit.unr-lcssa:                   ; preds = %.lr.ph, %.lr.ph.preheader
  %indvars.iv.unr = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next.3, %.lr.ph ]
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %._crit_edge, label %.lr.ph.epil

.lr.ph.epil:                                      ; preds = %._crit_edge.loopexit.unr-lcssa, %.lr.ph.epil
  %indvars.iv.epil = phi i64 [ %indvars.iv.next.epil, %.lr.ph.epil ], [ %indvars.iv.unr, %._crit_edge.loopexit.unr-lcssa ]
  %epil.iter = phi i64 [ %epil.iter.next, %.lr.ph.epil ], [ 0, %._crit_edge.loopexit.unr-lcssa ]
  %10 = load ptr, ptr %1, align 8, !tbaa !11
  %11 = getelementptr inbounds ptr, ptr %10, i64 %indvars.iv.epil
  %12 = load ptr, ptr %11, align 8, !tbaa !12
  %13 = load ptr, ptr %0, align 8, !tbaa !11
  %14 = getelementptr inbounds ptr, ptr %13, i64 %indvars.iv.epil
  store ptr %12, ptr %14, align 8, !tbaa !12
  %indvars.iv.next.epil = add nuw nsw i64 %indvars.iv.epil, 1
  %epil.iter.next = add i64 %epil.iter, 1
  %epil.iter.cmp.not = icmp eq i64 %epil.iter.next, %xtraiter
  br i1 %epil.iter.cmp.not, label %._crit_edge, label %.lr.ph.epil, !llvm.loop !13

._crit_edge:                                      ; preds = %._crit_edge.loopexit.unr-lcssa, %.lr.ph.epil, %6
  %15 = getelementptr inbounds i8, ptr %0, i64 12
  store i32 %7, ptr %15, align 4, !tbaa !5
  br label %36

.lr.ph:                                           ; preds = %.lr.ph, %.lr.ph.preheader.new
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader.new ], [ %indvars.iv.next.3, %.lr.ph ]
  %niter = phi i64 [ 0, %.lr.ph.preheader.new ], [ %niter.next.3, %.lr.ph ]
  %16 = load ptr, ptr %1, align 8, !tbaa !11
  %17 = getelementptr inbounds ptr, ptr %16, i64 %indvars.iv
  %18 = load ptr, ptr %17, align 8, !tbaa !12
  %19 = load ptr, ptr %0, align 8, !tbaa !11
  %20 = getelementptr inbounds ptr, ptr %19, i64 %indvars.iv
  store ptr %18, ptr %20, align 8, !tbaa !12
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %21 = load ptr, ptr %1, align 8, !tbaa !11
  %22 = getelementptr inbounds ptr, ptr %21, i64 %indvars.iv.next
  %23 = load ptr, ptr %22, align 8, !tbaa !12
  %24 = load ptr, ptr %0, align 8, !tbaa !11
  %25 = getelementptr inbounds ptr, ptr %24, i64 %indvars.iv.next
  store ptr %23, ptr %25, align 8, !tbaa !12
  %indvars.iv.next.1 = or disjoint i64 %indvars.iv, 2
  %26 = load ptr, ptr %1, align 8, !tbaa !11
  %27 = getelementptr inbounds ptr, ptr %26, i64 %indvars.iv.next.1
  %28 = load ptr, ptr %27, align 8, !tbaa !12
  %29 = load ptr, ptr %0, align 8, !tbaa !11
  %30 = getelementptr inbounds ptr, ptr %29, i64 %indvars.iv.next.1
  store ptr %28, ptr %30, align 8, !tbaa !12
  %indvars.iv.next.2 = or disjoint i64 %indvars.iv, 3
  %31 = load ptr, ptr %1, align 8, !tbaa !11
  %32 = getelementptr inbounds ptr, ptr %31, i64 %indvars.iv.next.2
  %33 = load ptr, ptr %32, align 8, !tbaa !12
  %34 = load ptr, ptr %0, align 8, !tbaa !11
  %35 = getelementptr inbounds ptr, ptr %34, i64 %indvars.iv.next.2
  store ptr %33, ptr %35, align 8, !tbaa !12
  %indvars.iv.next.3 = add nuw nsw i64 %indvars.iv, 4
  %niter.next.3 = add i64 %niter, 4
  %niter.ncmp.3 = icmp eq i64 %niter.next.3, %unroll_iter
  br i1 %niter.ncmp.3, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph, !llvm.loop !15

36:                                               ; preds = %._crit_edge, %2
  ret ptr %0
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN8RNVArray6ResizeEi(ptr noundef nonnull align 8 dereferenceable(16), i32 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN8RNVArray5EmptyEi(ptr noundef nonnull align 8 dereferenceable(16), i32 noundef) 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 = !{!6, !10, i64 12}
!6 = !{!"_ZTS8RNVArray", !7, i64 0, !10, i64 8, !10, i64 12}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!6, !7, i64 0}
!12 = !{!7, !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.unroll.disable"}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}


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