; LLVM IR from ADJA/algos :: Geometry/ClosestPairOfPoints.ll (Z12updateAnswer5pointS_)

; 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.point = type { double, double, i32 }

@ans = external dso_local global double, align 8
@p1 = external dso_local global i32, align 4
@p2 = external dso_local global i32, align 4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef double @_Z4dist5pointS_(ptr noundef byval(%struct.point) align 8, ptr noundef byval(%struct.point) align 8) #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z12updateAnswer5pointS_(ptr noundef byval(%struct.point) align 8 %0, ptr noundef byval(%struct.point) align 8 %1) #0 {
  %3 = alloca double, align 8
  %4 = alloca %struct.point, align 8
  %5 = alloca %struct.point, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %4, ptr align 8 %0, i64 24, i1 false), !tbaa.struct !5
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %5, ptr align 8 %1, i64 24, i1 false), !tbaa.struct !5
  %6 = call noundef double @_Z4dist5pointS_(ptr noundef byval(%struct.point) align 8 %4, ptr noundef byval(%struct.point) align 8 %5)
  store double %6, ptr %3, align 8, !tbaa !6
  %7 = load double, ptr %3, align 8, !tbaa !6
  %8 = load double, ptr @ans, align 8, !tbaa !6
  %9 = fcmp olt double %7, %8
  br i1 %9, label %10, label %16

10:                                               ; preds = %2
  %11 = load double, ptr %3, align 8, !tbaa !6
  store double %11, ptr @ans, align 8, !tbaa !6
  %12 = getelementptr inbounds %struct.point, ptr %0, i32 0, i32 2
  %13 = load i32, ptr %12, align 8, !tbaa !12
  store i32 %13, ptr @p1, align 4, !tbaa !10
  %14 = getelementptr inbounds %struct.point, ptr %1, i32 0, i32 2
  %15 = load i32, ptr %14, align 8, !tbaa !12
  store i32 %15, ptr @p2, align 4, !tbaa !10
  br label %16

16:                                               ; preds = %10, %2
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  ret void
}

; 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 nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #2

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

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" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
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 = !{i64 0, i64 8, !6, i64 8, i64 8, !6, i64 16, i64 4, !10}
!6 = !{!7, !7, i64 0}
!7 = !{!"double", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!11, !11, i64 0}
!11 = !{!"int", !8, i64 0}
!12 = !{!13, !11, i64 16}
!13 = !{!"_ZTS5point", !7, i64 0, !7, i64 8, !11, i64 16}


; 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"

%struct.point = type { double, double, i32 }

@ans = external dso_local local_unnamed_addr global double, align 8
@p1 = external dso_local local_unnamed_addr global i32, align 4
@p2 = external dso_local local_unnamed_addr global i32, align 4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef double @_Z4dist5pointS_(ptr noundef byval(%struct.point) align 8, ptr noundef byval(%struct.point) align 8) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z12updateAnswer5pointS_(ptr nocapture noundef readonly byval(%struct.point) align 8 %0, ptr nocapture noundef readonly byval(%struct.point) align 8 %1) local_unnamed_addr #0 {
  %3 = tail call noundef double @_Z4dist5pointS_(ptr noundef nonnull byval(%struct.point) align 8 %0, ptr noundef nonnull byval(%struct.point) align 8 %1)
  %4 = load double, ptr @ans, align 8, !tbaa !5
  %5 = fcmp olt double %3, %4
  br i1 %5, label %6, label %11

6:                                                ; preds = %2
  store double %3, ptr @ans, align 8, !tbaa !5
  %7 = getelementptr inbounds i8, ptr %0, i64 16
  %8 = load i32, ptr %7, align 8, !tbaa !9
  store i32 %8, ptr @p1, align 4, !tbaa !12
  %9 = getelementptr inbounds i8, ptr %1, i64 16
  %10 = load i32, ptr %9, align 8, !tbaa !9
  store i32 %10, ptr @p2, align 4, !tbaa !12
  br label %11

11:                                               ; preds = %6, %2
  ret void
}

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 = !{!"double", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !11, i64 16}
!10 = !{!"_ZTS5point", !6, i64 0, !6, i64 8, !11, i64 16}
!11 = !{!"int", !7, i64 0}
!12 = !{!11, !11, i64 0}


; Effective O3 passes: DSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,MemCpyOptPass,PostOrderFunctionAttrsPass,SROAPass,TailCallElimPass