; LLVM IR from niessner/Matterport :: code/gaps/pkgs/R2Shapes/R2Polygon.ll (ZN9R2Polygon5EmptyEv)

; 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.R2Box = type { %class.R2Solid, %class.R2Point, %class.R2Point }
%class.R2Solid = type { %class.R2Shape }
%class.R2Shape = type { ptr }
%class.R2Point = type { [2 x double] }
%class.R2Polygon = type <{ %class.R2Solid, ptr, i32, [4 x i8], %class.R2Box, i32, [4 x i8] }>

@R2null_box = external global %class.R2Box, align 8

; Function Attrs: nobuiltin nounwind
declare void @_ZdaPv(ptr noundef) #0

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef nonnull align 8 dereferenceable(40) ptr @_ZN5R2BoxaSERKS_(ptr noundef nonnull align 8 dereferenceable(40), ptr noundef nonnull align 8 dereferenceable(40)) #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN9R2Polygon5EmptyEv(ptr noundef nonnull align 8 dereferenceable(68) %0) unnamed_addr #2 align 2 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8
  %4 = getelementptr inbounds %class.R2Polygon, ptr %3, i32 0, i32 1
  %5 = load ptr, ptr %4, align 8, !tbaa !9
  %6 = icmp ne ptr %5, null
  br i1 %6, label %7, label %13

7:                                                ; preds = %1
  %8 = getelementptr inbounds %class.R2Polygon, ptr %3, i32 0, i32 1
  %9 = load ptr, ptr %8, align 8, !tbaa !9
  %10 = icmp eq ptr %9, null
  br i1 %10, label %12, label %11

11:                                               ; preds = %7
  call void @_ZdaPv(ptr noundef %9) #3
  br label %12

12:                                               ; preds = %11, %7
  br label %13

13:                                               ; preds = %12, %1
  %14 = getelementptr inbounds %class.R2Polygon, ptr %3, i32 0, i32 1
  store ptr null, ptr %14, align 8, !tbaa !9
  %15 = getelementptr inbounds %class.R2Polygon, ptr %3, i32 0, i32 2
  store i32 0, ptr %15, align 8, !tbaa !16
  %16 = getelementptr inbounds %class.R2Polygon, ptr %3, i32 0, i32 4
  %17 = call noundef nonnull align 8 dereferenceable(40) ptr @_ZN5R2BoxaSERKS_(ptr noundef nonnull align 8 dereferenceable(40) %16, ptr noundef nonnull align 8 dereferenceable(40) @R2null_box)
  ret void
}

attributes #0 = { 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 #1 = { inlinehint 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 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 = { 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, !6, i64 8}
!10 = !{!"_ZTS9R2Polygon", !11, i64 0, !6, i64 8, !13, i64 16, !14, i64 24, !13, i64 64}
!11 = !{!"_ZTS7R2Solid", !12, i64 0}
!12 = !{!"_ZTS7R2Shape"}
!13 = !{!"int", !7, i64 0}
!14 = !{!"_ZTS5R2Box", !11, i64 0, !15, i64 8, !15, i64 24}
!15 = !{!"_ZTS7R2Point", !7, i64 0}
!16 = !{!10, !13, i64 16}


; 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.R2Box = type { %class.R2Solid, %class.R2Point, %class.R2Point }
%class.R2Solid = type { %class.R2Shape }
%class.R2Shape = type { ptr }
%class.R2Point = type { [2 x double] }

@R2null_box = external global %class.R2Box, align 8

; Function Attrs: nobuiltin nounwind
declare void @_ZdaPv(ptr noundef) local_unnamed_addr #0

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef nonnull align 8 dereferenceable(40) ptr @_ZN5R2BoxaSERKS_(ptr noundef nonnull align 8 dereferenceable(40), ptr noundef nonnull align 8 dereferenceable(40)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN9R2Polygon5EmptyEv(ptr noundef nonnull align 8 dereferenceable(68) %0) unnamed_addr #2 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 8
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %.not = icmp eq ptr %3, null
  br i1 %.not, label %5, label %4

4:                                                ; preds = %1
  tail call void @_ZdaPv(ptr noundef nonnull %3) #3
  br label %5

5:                                                ; preds = %4, %1
  store ptr null, ptr %2, align 8, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %0, i64 16
  store i32 0, ptr %6, align 8, !tbaa !15
  %7 = getelementptr inbounds i8, ptr %0, i64 24
  %8 = tail call noundef nonnull align 8 dereferenceable(40) ptr @_ZN5R2BoxaSERKS_(ptr noundef nonnull align 8 dereferenceable(40) %7, ptr noundef nonnull align 8 dereferenceable(40) @R2null_box)
  ret void
}

attributes #0 = { 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 #1 = { inlinehint 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 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 = { 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, !9, i64 8}
!6 = !{!"_ZTS9R2Polygon", !7, i64 0, !9, i64 8, !12, i64 16, !13, i64 24, !12, i64 64}
!7 = !{!"_ZTS7R2Solid", !8, i64 0}
!8 = !{!"_ZTS7R2Shape"}
!9 = !{!"any pointer", !10, i64 0}
!10 = !{!"omnipotent char", !11, i64 0}
!11 = !{!"Simple C++ TBAA"}
!12 = !{!"int", !10, i64 0}
!13 = !{!"_ZTS5R2Box", !7, i64 0, !14, i64 8, !14, i64 24}
!14 = !{!"_ZTS7R2Point", !10, i64 0}
!15 = !{!6, !12, i64 16}


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