; LLVM IR from niessner/Matterport :: code/gaps/pkgs/R3Shapes/R3Mesh.ll (ZNK6R3Mesh17AverageEdgeLengthEv)

; 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 i32 @_ZNK6R3Mesh6NEdgesEv(ptr noundef nonnull align 8 dereferenceable(272)) #1 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef ptr @_ZNK6R3Mesh4EdgeEi(ptr noundef nonnull align 8 dereferenceable(272), i32 noundef) #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef double @_ZNK6R3Mesh17AverageEdgeLengthEv(ptr noundef nonnull align 8 dereferenceable(272) %0) #2 align 2 {
  %2 = alloca double, align 8
  %3 = alloca ptr, align 8
  %4 = alloca double, align 8
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  %7 = load ptr, ptr %3, align 8
  %8 = call noundef i32 @_ZNK6R3Mesh6NEdgesEv(ptr noundef nonnull align 8 dereferenceable(272) %7)
  %9 = icmp eq i32 %8, 0
  br i1 %9, label %10, label %11

10:                                               ; preds = %1
  store double 0.000000e+00, ptr %2, align 8
  br label %32

11:                                               ; preds = %1
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  store double 0.000000e+00, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  store i32 0, ptr %5, align 4, !tbaa !11
  br label %12

12:                                               ; preds = %24, %11
  %13 = load i32, ptr %5, align 4, !tbaa !11
  %14 = call noundef i32 @_ZNK6R3Mesh6NEdgesEv(ptr noundef nonnull align 8 dereferenceable(272) %7)
  %15 = icmp slt i32 %13, %14
  br i1 %15, label %17, label %16

16:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %27

17:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %18 = load i32, ptr %5, align 4, !tbaa !11
  %19 = call noundef ptr @_ZNK6R3Mesh4EdgeEi(ptr noundef nonnull align 8 dereferenceable(272) %7, i32 noundef %18)
  store ptr %19, ptr %6, align 8, !tbaa !5
  %20 = load ptr, ptr %6, align 8, !tbaa !5
  %21 = call noundef double @_ZNK6R3Mesh10EdgeLengthEPK10R3MeshEdge(ptr noundef nonnull align 8 dereferenceable(272) %7, ptr noundef %20)
  %22 = load double, ptr %4, align 8, !tbaa !9
  %23 = fadd double %22, %21
  store double %23, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  br label %24

24:                                               ; preds = %17
  %25 = load i32, ptr %5, align 4, !tbaa !11
  %26 = add nsw i32 %25, 1
  store i32 %26, ptr %5, align 4, !tbaa !11
  br label %12, !llvm.loop !13

27:                                               ; preds = %16
  %28 = load double, ptr %4, align 8, !tbaa !9
  %29 = call noundef i32 @_ZNK6R3Mesh6NEdgesEv(ptr noundef nonnull align 8 dereferenceable(272) %7)
  %30 = sitofp i32 %29 to double
  %31 = fdiv double %28, %30
  store double %31, ptr %2, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  br label %32

32:                                               ; preds = %27, %10
  %33 = load double, ptr %2, align 8
  ret double %33
}

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef double @_ZNK6R3Mesh10EdgeLengthEPK10R3MeshEdge(ptr noundef nonnull align 8 dereferenceable(272), ptr 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 i32 @_ZNK6R3Mesh6NEdgesEv(ptr noundef nonnull align 8 dereferenceable(272)) local_unnamed_addr #0 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef ptr @_ZNK6R3Mesh4EdgeEi(ptr noundef nonnull align 8 dereferenceable(272), i32 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef double @_ZNK6R3Mesh17AverageEdgeLengthEv(ptr noundef nonnull align 8 dereferenceable(272) %0) local_unnamed_addr #1 align 2 {
  %2 = tail call noundef i32 @_ZNK6R3Mesh6NEdgesEv(ptr noundef nonnull align 8 dereferenceable(272) %0)
  %3 = icmp eq i32 %2, 0
  br i1 %3, label %15, label %.preheader

.preheader:                                       ; preds = %1
  %4 = tail call noundef i32 @_ZNK6R3Mesh6NEdgesEv(ptr noundef nonnull align 8 dereferenceable(272) %0)
  %5 = icmp sgt i32 %4, 0
  br i1 %5, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %.preheader
  %.08.lcssa = phi double [ 0.000000e+00, %.preheader ], [ %11, %.lr.ph ]
  %6 = tail call noundef i32 @_ZNK6R3Mesh6NEdgesEv(ptr noundef nonnull align 8 dereferenceable(272) %0)
  %7 = sitofp i32 %6 to double
  %8 = fdiv double %.08.lcssa, %7
  br label %15

.lr.ph:                                           ; preds = %.preheader, %.lr.ph
  %.0710 = phi i32 [ %12, %.lr.ph ], [ 0, %.preheader ]
  %.089 = phi double [ %11, %.lr.ph ], [ 0.000000e+00, %.preheader ]
  %9 = tail call noundef ptr @_ZNK6R3Mesh4EdgeEi(ptr noundef nonnull align 8 dereferenceable(272) %0, i32 noundef %.0710)
  %10 = tail call noundef double @_ZNK6R3Mesh10EdgeLengthEPK10R3MeshEdge(ptr noundef nonnull align 8 dereferenceable(272) %0, ptr noundef %9)
  %11 = fadd double %.089, %10
  %12 = add nuw nsw i32 %.0710, 1
  %13 = tail call noundef i32 @_ZNK6R3Mesh6NEdgesEv(ptr noundef nonnull align 8 dereferenceable(272) %0)
  %14 = icmp slt i32 %12, %13
  br i1 %14, label %.lr.ph, label %._crit_edge, !llvm.loop !5

15:                                               ; preds = %1, %._crit_edge
  %.0 = phi double [ %8, %._crit_edge ], [ 0.000000e+00, %1 ]
  ret double %.0
}

; 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

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