; LLVM IR from niessner/Matterport :: code/gaps/pkgs/R3Shapes/R3Mesh.ll (ZNK6R3Mesh10VertexAreaEPK12R3MeshVertex)

; 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"

; 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: inlinehint mustprogress uwtable
declare dso_local noundef double @_ZNK6R3Mesh8FaceAreaEPK10R3MeshFace(ptr noundef nonnull align 8 dereferenceable(272), ptr noundef) #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef double @_ZNK6R3Mesh10VertexAreaEPK12R3MeshVertex(ptr noundef nonnull align 8 dereferenceable(272) %0, ptr noundef %1) #2 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca double, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %10 = load ptr, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  store double 0.000000e+00, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  store i32 0, ptr %6, align 4, !tbaa !11
  br label %11

11:                                               ; preds = %35, %2
  %12 = load i32, ptr %6, align 4, !tbaa !11
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  %14 = call noundef i32 @_ZNK6R3Mesh13VertexValenceEPK12R3MeshVertex(ptr noundef nonnull align 8 dereferenceable(272) %10, ptr noundef %13)
  %15 = icmp slt i32 %12, %14
  br i1 %15, label %17, label %16

16:                                               ; preds = %11
  store i32 2, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  br label %38

17:                                               ; preds = %11
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  %19 = load i32, ptr %6, align 4, !tbaa !11
  %20 = call noundef ptr @_ZNK6R3Mesh12EdgeOnVertexEPK12R3MeshVertexi(ptr noundef nonnull align 8 dereferenceable(272) %10, ptr noundef %18, i32 noundef %19)
  store ptr %20, ptr %8, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #3
  %21 = load ptr, ptr %8, align 8, !tbaa !5
  %22 = load ptr, ptr %4, align 8, !tbaa !5
  %23 = call noundef ptr @_ZNK6R3Mesh10FaceOnEdgeEPK10R3MeshEdgePK12R3MeshVertexi(ptr noundef nonnull align 8 dereferenceable(272) %10, ptr noundef %21, ptr noundef %22, i32 noundef 0)
  store ptr %23, ptr %9, align 8, !tbaa !5
  %24 = load ptr, ptr %9, align 8, !tbaa !5
  %25 = icmp ne ptr %24, null
  br i1 %25, label %27, label %26

26:                                               ; preds = %17
  store i32 4, ptr %7, align 4
  br label %32

27:                                               ; preds = %17
  %28 = load ptr, ptr %9, align 8, !tbaa !5
  %29 = call noundef double @_ZNK6R3Mesh8FaceAreaEPK10R3MeshFace(ptr noundef nonnull align 8 dereferenceable(272) %10, ptr noundef %28)
  %30 = load double, ptr %5, align 8, !tbaa !9
  %31 = fadd double %30, %29
  store double %31, ptr %5, align 8, !tbaa !9
  store i32 0, ptr %7, align 4
  br label %32

32:                                               ; preds = %27, %26
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  %33 = load i32, ptr %7, align 4
  switch i32 %33, label %41 [
    i32 0, label %34
    i32 4, label %35
  ]

34:                                               ; preds = %32
  br label %35

35:                                               ; preds = %34, %32
  %36 = load i32, ptr %6, align 4, !tbaa !11
  %37 = add nsw i32 %36, 1
  store i32 %37, ptr %6, align 4, !tbaa !11
  br label %11, !llvm.loop !13

38:                                               ; preds = %16
  %39 = load double, ptr %5, align 8, !tbaa !9
  %40 = fdiv double %39, 3.000000e+00
  store i32 1, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  ret double %40

41:                                               ; preds = %32
  unreachable
}

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef i32 @_ZNK6R3Mesh13VertexValenceEPK12R3MeshVertex(ptr noundef nonnull align 8 dereferenceable(272), ptr noundef) #1 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef ptr @_ZNK6R3Mesh12EdgeOnVertexEPK12R3MeshVertexi(ptr noundef nonnull align 8 dereferenceable(272), ptr noundef, i32 noundef) #1 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef ptr @_ZNK6R3Mesh10FaceOnEdgeEPK10R3MeshEdgePK12R3MeshVertexi(ptr noundef nonnull align 8 dereferenceable(272), ptr noundef, ptr noundef, i32 noundef) #1 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 = !{!"double", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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: inlinehint mustprogress uwtable
declare dso_local noundef double @_ZNK6R3Mesh8FaceAreaEPK10R3MeshFace(ptr noundef nonnull align 8 dereferenceable(272), ptr noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef double @_ZNK6R3Mesh10VertexAreaEPK12R3MeshVertex(ptr noundef nonnull align 8 dereferenceable(272) %0, ptr noundef %1) local_unnamed_addr #1 align 2 {
  %3 = tail call noundef i32 @_ZNK6R3Mesh13VertexValenceEPK12R3MeshVertex(ptr noundef nonnull align 8 dereferenceable(272) %0, ptr noundef %1)
  %4 = icmp sgt i32 %3, 0
  br i1 %4, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %11, %2
  %.0.lcssa = phi double [ 0.000000e+00, %2 ], [ %.1, %11 ]
  %5 = fdiv double %.0.lcssa, 3.000000e+00
  ret double %5

.lr.ph:                                           ; preds = %2, %11
  %.014 = phi double [ %.1, %11 ], [ 0.000000e+00, %2 ]
  %.01113 = phi i32 [ %12, %11 ], [ 0, %2 ]
  %6 = tail call noundef ptr @_ZNK6R3Mesh12EdgeOnVertexEPK12R3MeshVertexi(ptr noundef nonnull align 8 dereferenceable(272) %0, ptr noundef %1, i32 noundef %.01113)
  %7 = tail call noundef ptr @_ZNK6R3Mesh10FaceOnEdgeEPK10R3MeshEdgePK12R3MeshVertexi(ptr noundef nonnull align 8 dereferenceable(272) %0, ptr noundef %6, ptr noundef %1, i32 noundef 0)
  %.not = icmp eq ptr %7, null
  br i1 %.not, label %11, label %8

8:                                                ; preds = %.lr.ph
  %9 = tail call noundef double @_ZNK6R3Mesh8FaceAreaEPK10R3MeshFace(ptr noundef nonnull align 8 dereferenceable(272) %0, ptr noundef nonnull %7)
  %10 = fadd double %.014, %9
  br label %11

11:                                               ; preds = %.lr.ph, %8
  %.1 = phi double [ %10, %8 ], [ %.014, %.lr.ph ]
  %12 = add nuw nsw i32 %.01113, 1
  %13 = tail call noundef i32 @_ZNK6R3Mesh13VertexValenceEPK12R3MeshVertex(ptr noundef nonnull align 8 dereferenceable(272) %0, ptr noundef %1)
  %14 = icmp slt i32 %12, %13
  br i1 %14, label %.lr.ph, label %._crit_edge, !llvm.loop !5
}

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef i32 @_ZNK6R3Mesh13VertexValenceEPK12R3MeshVertex(ptr noundef nonnull align 8 dereferenceable(272), ptr noundef) local_unnamed_addr #0 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef ptr @_ZNK6R3Mesh12EdgeOnVertexEPK12R3MeshVertexi(ptr noundef nonnull align 8 dereferenceable(272), ptr noundef, i32 noundef) local_unnamed_addr #0 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef ptr @_ZNK6R3Mesh10FaceOnEdgeEPK10R3MeshEdgePK12R3MeshVertexi(ptr noundef nonnull align 8 dereferenceable(272), ptr noundef, ptr noundef, i32 noundef) local_unnamed_addr #0 align 2

attributes #0 = { 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 #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" }

!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: GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass