; LLVM IR from niessner/Matterport :: code/gaps/pkgs/R3Shapes/R3Mesh.ll (ZNK6R3Mesh23VertexAverageEdgeLengthEPK12R3MeshVertex)

; 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 @_ZNK6R3Mesh10EdgeLengthEPK10R3MeshEdge(ptr noundef nonnull align 8 dereferenceable(272), ptr noundef) #1 align 2

; 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: mustprogress uwtable
define dso_local noundef double @_ZNK6R3Mesh23VertexAverageEdgeLengthEPK12R3MeshVertex(ptr noundef nonnull align 8 dereferenceable(272) %0, ptr noundef %1) #2 align 2 {
  %3 = alloca double, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca double, align 8
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca double, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %10 = load ptr, ptr %4, align 8
  %11 = load ptr, ptr %5, align 8, !tbaa !5
  %12 = call noundef i32 @_ZNK6R3Mesh13VertexValenceEPK12R3MeshVertex(ptr noundef nonnull align 8 dereferenceable(272) %10, ptr noundef %11)
  %13 = icmp eq i32 %12, 0
  br i1 %13, label %14, label %15

14:                                               ; preds = %2
  store double 0.000000e+00, ptr %3, align 8
  br label %40

15:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  store double 0.000000e+00, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  store i32 0, ptr %7, align 4, !tbaa !11
  br label %16

16:                                               ; preds = %31, %15
  %17 = load i32, ptr %7, align 4, !tbaa !11
  %18 = load ptr, ptr %5, align 8, !tbaa !5
  %19 = call noundef i32 @_ZNK6R3Mesh13VertexValenceEPK12R3MeshVertex(ptr noundef nonnull align 8 dereferenceable(272) %10, ptr noundef %18)
  %20 = icmp slt i32 %17, %19
  br i1 %20, label %22, label %21

21:                                               ; preds = %16
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  br label %34

22:                                               ; preds = %16
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  %23 = load ptr, ptr %5, align 8, !tbaa !5
  %24 = load i32, ptr %7, align 4, !tbaa !11
  %25 = call noundef ptr @_ZNK6R3Mesh12EdgeOnVertexEPK12R3MeshVertexi(ptr noundef nonnull align 8 dereferenceable(272) %10, ptr noundef %23, i32 noundef %24)
  store ptr %25, ptr %8, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #3
  %26 = load ptr, ptr %8, align 8, !tbaa !5
  %27 = call noundef double @_ZNK6R3Mesh10EdgeLengthEPK10R3MeshEdge(ptr noundef nonnull align 8 dereferenceable(272) %10, ptr noundef %26)
  store double %27, ptr %9, align 8, !tbaa !9
  %28 = load double, ptr %9, align 8, !tbaa !9
  %29 = load double, ptr %6, align 8, !tbaa !9
  %30 = fadd double %29, %28
  store double %30, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  br label %31

31:                                               ; preds = %22
  %32 = load i32, ptr %7, align 4, !tbaa !11
  %33 = add nsw i32 %32, 1
  store i32 %33, ptr %7, align 4, !tbaa !11
  br label %16, !llvm.loop !13

34:                                               ; preds = %21
  %35 = load double, ptr %6, align 8, !tbaa !9
  %36 = load ptr, ptr %5, align 8, !tbaa !5
  %37 = call noundef i32 @_ZNK6R3Mesh13VertexValenceEPK12R3MeshVertex(ptr noundef nonnull align 8 dereferenceable(272) %10, ptr noundef %36)
  %38 = sitofp i32 %37 to double
  %39 = fdiv double %35, %38
  store double %39, ptr %3, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  br label %40

40:                                               ; preds = %34, %14
  %41 = load double, ptr %3, align 8
  ret double %41
}

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 @_ZNK6R3Mesh10EdgeLengthEPK10R3MeshEdge(ptr noundef nonnull align 8 dereferenceable(272), ptr noundef) local_unnamed_addr #0 align 2

; 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: mustprogress uwtable
define dso_local noundef double @_ZNK6R3Mesh23VertexAverageEdgeLengthEPK12R3MeshVertex(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 eq i32 %3, 0
  br i1 %4, label %16, label %.preheader

.preheader:                                       ; preds = %2
  %5 = tail call noundef i32 @_ZNK6R3Mesh13VertexValenceEPK12R3MeshVertex(ptr noundef nonnull align 8 dereferenceable(272) %0, ptr noundef %1)
  %6 = icmp sgt i32 %5, 0
  br i1 %6, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %.preheader
  %.012.lcssa = phi double [ 0.000000e+00, %.preheader ], [ %12, %.lr.ph ]
  %7 = tail call noundef i32 @_ZNK6R3Mesh13VertexValenceEPK12R3MeshVertex(ptr noundef nonnull align 8 dereferenceable(272) %0, ptr noundef %1)
  %8 = sitofp i32 %7 to double
  %9 = fdiv double %.012.lcssa, %8
  br label %16

.lr.ph:                                           ; preds = %.preheader, %.lr.ph
  %.01215 = phi double [ %12, %.lr.ph ], [ 0.000000e+00, %.preheader ]
  %.01314 = phi i32 [ %13, %.lr.ph ], [ 0, %.preheader ]
  %10 = tail call noundef ptr @_ZNK6R3Mesh12EdgeOnVertexEPK12R3MeshVertexi(ptr noundef nonnull align 8 dereferenceable(272) %0, ptr noundef %1, i32 noundef %.01314)
  %11 = tail call noundef double @_ZNK6R3Mesh10EdgeLengthEPK10R3MeshEdge(ptr noundef nonnull align 8 dereferenceable(272) %0, ptr noundef %10)
  %12 = fadd double %.01215, %11
  %13 = add nuw nsw i32 %.01314, 1
  %14 = tail call noundef i32 @_ZNK6R3Mesh13VertexValenceEPK12R3MeshVertex(ptr noundef nonnull align 8 dereferenceable(272) %0, ptr noundef %1)
  %15 = icmp slt i32 %13, %14
  br i1 %15, label %.lr.ph, label %._crit_edge, !llvm.loop !5

16:                                               ; preds = %2, %._crit_edge
  %.0 = phi double [ %9, %._crit_edge ], [ 0.000000e+00, %2 ]
  ret double %.0
}

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