; LLVM IR from niessner/Matterport :: code/gaps/pkgs/R2Shapes/R2Vector.ll (ZNK8R2Vector8QuadrantEv)

; 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.R2Vector = type { [2 x double] }

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_ZNK8R2Vector8QuadrantEv(ptr noundef nonnull align 8 dereferenceable(16) %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.R2Vector, ptr %4, i32 0, i32 0
  %6 = getelementptr inbounds [2 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 %16

9:                                                ; preds = %1
  %10 = getelementptr inbounds %class.R2Vector, ptr %4, i32 0, i32 0
  %11 = getelementptr inbounds [2 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 %15

14:                                               ; preds = %9
  store i32 3, ptr %2, align 4
  br label %23

15:                                               ; preds = %9
  store i32 2, ptr %2, align 4
  br label %23

16:                                               ; preds = %1
  %17 = getelementptr inbounds %class.R2Vector, ptr %4, i32 0, i32 0
  %18 = getelementptr inbounds [2 x double], ptr %17, i64 0, i64 1
  %19 = load double, ptr %18, align 8, !tbaa !9
  %20 = fcmp oge double %19, 0.000000e+00
  br i1 %20, label %21, label %22

21:                                               ; preds = %16
  store i32 1, ptr %2, align 4
  br label %23

22:                                               ; preds = %16
  store i32 0, ptr %2, align 4
  br label %23

23:                                               ; preds = %22, %21, %15, %14
  %24 = load i32, ptr %2, align 4
  ret i32 %24
}

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, 4) i32 @_ZNK8R2Vector8QuadrantEv(ptr nocapture noundef nonnull readonly align 8 dereferenceable(16) %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
  %. = select i1 %6, i32 2, i32 3
  %7 = fcmp oge double %5, 0.000000e+00
  %.1 = zext i1 %7 to i32
  %.0 = select i1 %3, i32 %.1, i32 %.
  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