; LLVM IR from niessner/Matterport :: code/gaps/pkgs/RNBasics/RNArray.ll (ZN8RNVArray5EmptyEi)

; 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 void @_ZN8RNVArray5EmptyEi(ptr noundef nonnull align 8 dereferenceable(16) %0, i32 noundef %1) #0 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  %5 = load ptr, ptr %3, align 8
  call void @_ZN8RNVArray8TruncateEi(ptr noundef nonnull align 8 dereferenceable(16) %5, i32 noundef 0)
  %6 = load i32, ptr %4, align 4, !tbaa !9
  %7 = icmp ne i32 %6, 0
  br i1 %7, label %8, label %21

8:                                                ; preds = %2
  %9 = getelementptr inbounds %class.RNVArray, ptr %5, i32 0, i32 0
  %10 = load ptr, ptr %9, align 8, !tbaa !11
  %11 = icmp ne ptr %10, null
  br i1 %11, label %12, label %18

12:                                               ; preds = %8
  %13 = getelementptr inbounds %class.RNVArray, ptr %5, i32 0, i32 0
  %14 = load ptr, ptr %13, align 8, !tbaa !11
  %15 = icmp eq ptr %14, null
  br i1 %15, label %17, label %16

16:                                               ; preds = %12
  call void @_ZdlPvm(ptr noundef %14, i64 noundef 8) #3
  br label %17

17:                                               ; preds = %16, %12
  br label %18

18:                                               ; preds = %17, %8
  %19 = getelementptr inbounds %class.RNVArray, ptr %5, i32 0, i32 0
  store ptr null, ptr %19, align 8, !tbaa !11
  %20 = getelementptr inbounds %class.RNVArray, ptr %5, i32 0, i32 1
  store i32 0, ptr %20, align 8, !tbaa !13
  br label %21

21:                                               ; preds = %18, %2
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN8RNVArray8TruncateEi(ptr noundef nonnull align 8 dereferenceable(16), i32 noundef) #1 align 2

; Function Attrs: nobuiltin nounwind
declare void @_ZdlPvm(ptr noundef, i64 noundef) #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 = { 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 #2 = { nobuiltin nounwind "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 = { builtin 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 = !{!12, !6, i64 0}
!12 = !{!"_ZTS8RNVArray", !6, i64 0, !10, i64 8, !10, i64 12}
!13 = !{!12, !10, i64 8}


; 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 nounwind uwtable
define dso_local void @_ZN8RNVArray5EmptyEi(ptr noundef nonnull align 8 dereferenceable(16) %0, i32 noundef %1) local_unnamed_addr #0 align 2 {
  tail call void @_ZN8RNVArray8TruncateEi(ptr noundef nonnull align 8 dereferenceable(16) %0, i32 noundef 0)
  %.not = icmp eq i32 %1, 0
  br i1 %.not, label %8, label %3

3:                                                ; preds = %2
  %4 = load ptr, ptr %0, align 8, !tbaa !5
  %.not1 = icmp eq ptr %4, null
  br i1 %.not1, label %6, label %5

5:                                                ; preds = %3
  tail call void @_ZdlPvm(ptr noundef nonnull %4, i64 noundef 8) #2
  br label %6

6:                                                ; preds = %5, %3
  store ptr null, ptr %0, align 8, !tbaa !5
  %7 = getelementptr inbounds i8, ptr %0, i64 8
  store i32 0, ptr %7, align 8, !tbaa !11
  br label %8

8:                                                ; preds = %6, %2
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN8RNVArray8TruncateEi(ptr noundef nonnull align 8 dereferenceable(16), i32 noundef) local_unnamed_addr #0 align 2

; Function Attrs: nobuiltin nounwind
declare void @_ZdlPvm(ptr noundef, i64 noundef) local_unnamed_addr #1

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 = { nobuiltin nounwind "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 = { builtin 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, !7, i64 0}
!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, !10, i64 8}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass