; LLVM IR from reyadussalahin/problem-solving :: computational_geometry/convex_hull/loj/F1203 (Solution)

; 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 { i64, i64 }

; Function Attrs: nounwind uwtable
define dso_local i32 @compare_point(ptr noundef %0, ptr noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  store ptr %9, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  %10 = load ptr, ptr %5, align 8, !tbaa !5
  store ptr %10, ptr %7, align 8, !tbaa !5
  %11 = load ptr, ptr %6, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.Point, ptr %11, i32 0, i32 0
  %13 = load i64, ptr %12, align 8, !tbaa !9
  %14 = load ptr, ptr %7, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.Point, ptr %14, i32 0, i32 0
  %16 = load i64, ptr %15, align 8, !tbaa !9
  %17 = icmp eq i64 %13, %16
  br i1 %17, label %18, label %37

18:                                               ; preds = %2
  %19 = load ptr, ptr %6, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.Point, ptr %19, i32 0, i32 1
  %21 = load i64, ptr %20, align 8, !tbaa !12
  %22 = load ptr, ptr %7, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.Point, ptr %22, i32 0, i32 1
  %24 = load i64, ptr %23, align 8, !tbaa !12
  %25 = icmp slt i64 %21, %24
  br i1 %25, label %26, label %27

26:                                               ; preds = %18
  store i32 -1, ptr %3, align 4
  store i32 1, ptr %8, align 4
  br label %47

27:                                               ; preds = %18
  %28 = load ptr, ptr %6, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.Point, ptr %28, i32 0, i32 1
  %30 = load i64, ptr %29, align 8, !tbaa !12
  %31 = load ptr, ptr %7, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.Point, ptr %31, i32 0, i32 1
  %33 = load i64, ptr %32, align 8, !tbaa !12
  %34 = icmp sgt i64 %30, %33
  br i1 %34, label %35, label %36

35:                                               ; preds = %27
  store i32 1, ptr %3, align 4
  store i32 1, ptr %8, align 4
  br label %47

36:                                               ; preds = %27
  store i32 0, ptr %3, align 4
  store i32 1, ptr %8, align 4
  br label %47

37:                                               ; preds = %2
  %38 = load ptr, ptr %6, align 8, !tbaa !5
  %39 = getelementptr inbounds %struct.Point, ptr %38, i32 0, i32 0
  %40 = load i64, ptr %39, align 8, !tbaa !9
  %41 = load ptr, ptr %7, align 8, !tbaa !5
  %42 = getelementptr inbounds %struct.Point, ptr %41, i32 0, i32 0
  %43 = load i64, ptr %42, align 8, !tbaa !9
  %44 = icmp slt i64 %40, %43
  br i1 %44, label %45, label %46

45:                                               ; preds = %37
  store i32 -1, ptr %3, align 4
  store i32 1, ptr %8, align 4
  br label %47

46:                                               ; preds = %37
  store i32 1, ptr %3, align 4
  store i32 1, ptr %8, align 4
  br label %47

47:                                               ; preds = %46, %45, %36, %35, %26
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  %48 = load i32, ptr %3, align 4
  ret i32 %48
}

; 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

attributes #0 = { 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 = { 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/C++ TBAA"}
!9 = !{!10, !11, i64 0}
!10 = !{!"", !11, i64 0, !11, i64 8}
!11 = !{!"long long", !7, i64 0}
!12 = !{!10, !11, i64 8}


; 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 range(i32 -1, 2) i32 @compare_point(ptr nocapture noundef readonly %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 {
  %3 = load i64, ptr %0, align 8, !tbaa !5
  %4 = load i64, ptr %1, align 8, !tbaa !5
  %5 = icmp eq i64 %3, %4
  br i1 %5, label %6, label %14

6:                                                ; preds = %2
  %7 = getelementptr inbounds i8, ptr %0, i64 8
  %8 = load i64, ptr %7, align 8, !tbaa !10
  %9 = getelementptr inbounds i8, ptr %1, i64 8
  %10 = load i64, ptr %9, align 8, !tbaa !10
  %11 = icmp slt i64 %8, %10
  br i1 %11, label %16, label %12

12:                                               ; preds = %6
  %13 = icmp sgt i64 %8, %10
  %. = zext i1 %13 to i32
  br label %16

14:                                               ; preds = %2
  %15 = icmp slt i64 %3, %4
  %.14 = select i1 %15, i32 -1, i32 1
  br label %16

16:                                               ; preds = %14, %12, %6
  %.0 = phi i32 [ -1, %6 ], [ %., %12 ], [ %.14, %14 ]
  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, !7, i64 0}
!6 = !{!"", !7, i64 0, !7, i64 8}
!7 = !{!"long long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!6, !7, i64 8}


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