; LLVM IR from niessner/Matterport :: code/gaps/apps/mpview/mp.ll (ZNK7MPHouse9FindLevelERK7R3Pointd)

; 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"

%struct.MPHouse = type { %class.RNArray.0, %class.RNArray.1, %class.RNArray.2, %class.RNArray.3, %class.RNArray.4, %class.RNArray.5, %class.RNArray.6, %class.RNArray.7, %class.RNArray.8, %class.RNArray.9, %class.RGBDConfiguration, ptr, ptr, %class.R3Box, ptr, ptr }
%class.RNArray.0 = type { %class.RNVArray }
%class.RNVArray = type { ptr, i32, i32 }
%class.RNArray.1 = type { %class.RNVArray }
%class.RNArray.2 = type { %class.RNVArray }
%class.RNArray.3 = type { %class.RNVArray }
%class.RNArray.4 = type { %class.RNVArray }
%class.RNArray.5 = type { %class.RNVArray }
%class.RNArray.6 = type { %class.RNVArray }
%class.RNArray.7 = type { %class.RNVArray }
%class.RNArray.8 = type { %class.RNVArray }
%class.RNArray.9 = type { %class.RNVArray }
%class.RGBDConfiguration = type { ptr, %class.RNArray.10, %class.RNArray.11, ptr, ptr, ptr, ptr, %class.R3Box }
%class.RNArray.10 = type { %class.RNVArray }
%class.RNArray.11 = type { %class.RNVArray }
%class.R3Box = type { %class.R3Solid, %class.R3Point, %class.R3Point }
%class.R3Solid = type { %class.R3Shape }
%class.R3Shape = type { ptr }
%class.R3Point = type { [3 x double] }
%struct.MPLevel = type { ptr, i32, %class.RNArray.7, %class.R3Point, %class.R3Box, ptr }

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZNK8RNVArray8NEntriesEv(ptr noundef nonnull align 8 dereferenceable(16)) #0 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress uwtable
define dso_local noundef ptr @_ZNK7MPHouse9FindLevelERK7R3Pointd(ptr noundef nonnull align 8 dereferenceable(376) %0, ptr noundef nonnull align 8 dereferenceable(24) %1, double noundef %2) #2 align 2 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca double, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca ptr, align 8
  %10 = alloca double, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store double %2, ptr %6, align 8, !tbaa !9
  %11 = load ptr, ptr %4, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #4
  store ptr null, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  store i32 0, ptr %8, align 4, !tbaa !11
  br label %12

12:                                               ; preds = %36, %3
  %13 = load i32, ptr %8, align 4, !tbaa !11
  %14 = getelementptr inbounds %struct.MPHouse, ptr %11, i32 0, i32 9
  %15 = call noundef i32 @_ZNK8RNVArray8NEntriesEv(ptr noundef nonnull align 8 dereferenceable(16) %14)
  %16 = icmp slt i32 %13, %15
  br i1 %16, label %18, label %17

17:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  br label %39

18:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #4
  %19 = getelementptr inbounds %struct.MPHouse, ptr %11, i32 0, i32 9
  %20 = load i32, ptr %8, align 4, !tbaa !11
  %21 = call noundef ptr @_ZNK7RNArrayIP7MPLevelE3KthEi(ptr noundef nonnull align 8 dereferenceable(16) %19, i32 noundef %20)
  store ptr %21, ptr %9, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #4
  %22 = load ptr, ptr %9, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.MPLevel, ptr %22, i32 0, i32 3
  %24 = call noundef double @_ZNK7R3Point1ZEv(ptr noundef nonnull align 8 dereferenceable(24) %23)
  %25 = load ptr, ptr %5, align 8, !tbaa !5
  %26 = call noundef double @_ZNK7R3Point1ZEv(ptr noundef nonnull align 8 dereferenceable(24) %25)
  %27 = fsub double %24, %26
  %28 = call double @llvm.fabs.f64(double %27)
  store double %28, ptr %10, align 8, !tbaa !9
  %29 = load double, ptr %10, align 8, !tbaa !9
  %30 = load double, ptr %6, align 8, !tbaa !9
  %31 = fcmp olt double %29, %30
  br i1 %31, label %32, label %35

32:                                               ; preds = %18
  %33 = load ptr, ptr %9, align 8, !tbaa !5
  store ptr %33, ptr %7, align 8, !tbaa !5
  %34 = load double, ptr %10, align 8, !tbaa !9
  store double %34, ptr %6, align 8, !tbaa !9
  br label %35

35:                                               ; preds = %32, %18
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #4
  br label %36

36:                                               ; preds = %35
  %37 = load i32, ptr %8, align 4, !tbaa !11
  %38 = add nsw i32 %37, 1
  store i32 %38, ptr %8, align 4, !tbaa !11
  br label %12, !llvm.loop !13

39:                                               ; preds = %17
  %40 = load ptr, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #4
  ret ptr %40
}

; Function Attrs: mustprogress uwtable
declare dso_local noundef ptr @_ZNK7RNArrayIP7MPLevelE3KthEi(ptr noundef nonnull align 8 dereferenceable(16), i32 noundef) #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef double @_ZNK7R3Point1ZEv(ptr noundef nonnull align 8 dereferenceable(24)) #0 align 2

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fabs.f64(double) #3

attributes #0 = { inlinehint 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #4 = { 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 nounwind uwtable
declare dso_local noundef i32 @_ZNK8RNVArray8NEntriesEv(ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef ptr @_ZNK7MPHouse9FindLevelERK7R3Pointd(ptr noundef nonnull align 8 dereferenceable(376) %0, ptr noundef nonnull align 8 dereferenceable(24) %1, double noundef %2) local_unnamed_addr #1 align 2 {
  %4 = getelementptr inbounds i8, ptr %0, i64 144
  %5 = tail call noundef i32 @_ZNK8RNVArray8NEntriesEv(ptr noundef nonnull align 8 dereferenceable(16) %4)
  %6 = icmp sgt i32 %5, 0
  br i1 %6, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %3
  %.010.lcssa = phi ptr [ null, %3 ], [ %.111, %.lr.ph ]
  ret ptr %.010.lcssa

.lr.ph:                                           ; preds = %3, %.lr.ph
  %.016 = phi double [ %.1, %.lr.ph ], [ %2, %3 ]
  %.01015 = phi ptr [ %.111, %.lr.ph ], [ null, %3 ]
  %.01214 = phi i32 [ %14, %.lr.ph ], [ 0, %3 ]
  %7 = tail call noundef ptr @_ZNK7RNArrayIP7MPLevelE3KthEi(ptr noundef nonnull align 8 dereferenceable(16) %4, i32 noundef %.01214)
  %8 = getelementptr inbounds i8, ptr %7, i64 32
  %9 = tail call noundef double @_ZNK7R3Point1ZEv(ptr noundef nonnull align 8 dereferenceable(24) %8)
  %10 = tail call noundef double @_ZNK7R3Point1ZEv(ptr noundef nonnull align 8 dereferenceable(24) %1)
  %11 = fsub double %9, %10
  %12 = tail call double @llvm.fabs.f64(double %11)
  %13 = fcmp olt double %12, %.016
  %.111 = select i1 %13, ptr %7, ptr %.01015
  %.1 = select i1 %13, double %12, double %.016
  %14 = add nuw nsw i32 %.01214, 1
  %15 = tail call noundef i32 @_ZNK8RNVArray8NEntriesEv(ptr noundef nonnull align 8 dereferenceable(16) %4)
  %16 = icmp slt i32 %14, %15
  br i1 %16, label %.lr.ph, label %._crit_edge, !llvm.loop !5
}

; Function Attrs: mustprogress uwtable
declare dso_local noundef ptr @_ZNK7RNArrayIP7MPLevelE3KthEi(ptr noundef nonnull align 8 dereferenceable(16), i32 noundef) local_unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef double @_ZNK7R3Point1ZEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fabs.f64(double) #2

attributes #0 = { inlinehint 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 = { 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 nocallback nofree nosync nounwind speculatable willreturn memory(none) }

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