; LLVM IR from niessner/Matterport :: code/gaps/pkgs/R3Shapes/R3Vector.ll (ZNK8R3Vector6OctantEv)

; 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.R3Vector = type { [3 x double] }

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_ZNK8R3Vector6OctantEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #0 align 2 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  %4 = load ptr, ptr %3, align 8
  %5 = getelementptr inbounds %class.R3Vector, ptr %4, i32 0, i32 0
  %6 = getelementptr inbounds [3 x double], ptr %5, i64 0, i64 0
  %7 = load double, ptr %6, align 8, !tbaa !9
  %8 = fcmp oge double %7, 0.000000e+00
  br i1 %8, label %9, label %28

9:                                                ; preds = %1
  %10 = getelementptr inbounds %class.R3Vector, ptr %4, i32 0, i32 0
  %11 = getelementptr inbounds [3 x double], ptr %10, i64 0, i64 1
  %12 = load double, ptr %11, align 8, !tbaa !9
  %13 = fcmp oge double %12, 0.000000e+00
  br i1 %13, label %14, label %21

14:                                               ; preds = %9
  %15 = getelementptr inbounds %class.R3Vector, ptr %4, i32 0, i32 0
  %16 = getelementptr inbounds [3 x double], ptr %15, i64 0, i64 2
  %17 = load double, ptr %16, align 8, !tbaa !9
  %18 = fcmp oge double %17, 0.000000e+00
  br i1 %18, label %19, label %20

19:                                               ; preds = %14
  store i32 7, ptr %2, align 4
  br label %47

20:                                               ; preds = %14
  store i32 6, ptr %2, align 4
  br label %47

21:                                               ; preds = %9
  %22 = getelementptr inbounds %class.R3Vector, ptr %4, i32 0, i32 0
  %23 = getelementptr inbounds [3 x double], ptr %22, i64 0, i64 2
  %24 = load double, ptr %23, align 8, !tbaa !9
  %25 = fcmp oge double %24, 0.000000e+00
  br i1 %25, label %26, label %27

26:                                               ; preds = %21
  store i32 5, ptr %2, align 4
  br label %47

27:                                               ; preds = %21
  store i32 4, ptr %2, align 4
  br label %47

28:                                               ; preds = %1
  %29 = getelementptr inbounds %class.R3Vector, ptr %4, i32 0, i32 0
  %30 = getelementptr inbounds [3 x double], ptr %29, i64 0, i64 1
  %31 = load double, ptr %30, align 8, !tbaa !9
  %32 = fcmp oge double %31, 0.000000e+00
  br i1 %32, label %33, label %40

33:                                               ; preds = %28
  %34 = getelementptr inbounds %class.R3Vector, ptr %4, i32 0, i32 0
  %35 = getelementptr inbounds [3 x double], ptr %34, i64 0, i64 2
  %36 = load double, ptr %35, align 8, !tbaa !9
  %37 = fcmp oge double %36, 0.000000e+00
  br i1 %37, label %38, label %39

38:                                               ; preds = %33
  store i32 3, ptr %2, align 4
  br label %47

39:                                               ; preds = %33
  store i32 2, ptr %2, align 4
  br label %47

40:                                               ; preds = %28
  %41 = getelementptr inbounds %class.R3Vector, ptr %4, i32 0, i32 0
  %42 = getelementptr inbounds [3 x double], ptr %41, i64 0, i64 2
  %43 = load double, ptr %42, align 8, !tbaa !9
  %44 = fcmp oge double %43, 0.000000e+00
  br i1 %44, label %45, label %46

45:                                               ; preds = %40
  store i32 1, ptr %2, align 4
  br label %47

46:                                               ; preds = %40
  store i32 0, ptr %2, align 4
  br label %47

47:                                               ; preds = %46, %45, %39, %38, %27, %26, %20, %19
  %48 = load i32, ptr %2, align 4
  ret i32 %48
}

attributes #0 = { 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" }

!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}


; 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: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) uwtable
define dso_local noundef range(i32 0, 8) i32 @_ZNK8R3Vector6OctantEv(ptr nocapture noundef nonnull readonly align 8 dereferenceable(24) %0) local_unnamed_addr #0 align 2 {
  %2 = load double, ptr %0, align 8, !tbaa !5
  %3 = fcmp ult double %2, 0.000000e+00
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  %5 = load double, ptr %4, align 8, !tbaa !5
  %6 = fcmp ult double %5, 0.000000e+00
  %7 = getelementptr inbounds i8, ptr %0, i64 16
  %8 = load double, ptr %7, align 8, !tbaa !5
  br i1 %3, label %13, label %9

9:                                                ; preds = %1
  %10 = fcmp ult double %8, 0.000000e+00
  br i1 %6, label %12, label %11

11:                                               ; preds = %9
  %. = select i1 %10, i32 6, i32 7
  br label %18

12:                                               ; preds = %9
  %.1 = select i1 %10, i32 4, i32 5
  br label %18

13:                                               ; preds = %1
  br i1 %6, label %16, label %14

14:                                               ; preds = %13
  %15 = fcmp ult double %8, 0.000000e+00
  %.2 = select i1 %15, i32 2, i32 3
  br label %18

16:                                               ; preds = %13
  %17 = fcmp oge double %8, 0.000000e+00
  %.3 = zext i1 %17 to i32
  br label %18

18:                                               ; preds = %16, %14, %12, %11
  %.0 = phi i32 [ %., %11 ], [ %.1, %12 ], [ %.2, %14 ], [ %.3, %16 ]
  ret i32 %.0
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) 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 = !{!6, !6, i64 0}
!6 = !{!"double", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


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