; LLVM IR from ShahjalalShohag/code-library :: Data Structures/KD Tree.ll (Z16squared_distance5pointS_)

; 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 { [2 x i32] }

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i64 @_Z16squared_distance5pointS_(i64 %0, i64 %1) #0 {
  %3 = alloca %struct.point, align 4
  %4 = alloca %struct.point, align 4
  %5 = alloca i64, align 8
  %6 = alloca i32, align 4
  %7 = getelementptr inbounds %struct.point, ptr %3, i32 0, i32 0
  store i64 %0, ptr %7, align 4
  %8 = getelementptr inbounds %struct.point, ptr %4, i32 0, i32 0
  store i64 %1, ptr %8, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #2
  store i64 0, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  store i32 0, ptr %6, align 4, !tbaa !9
  br label %9

9:                                                ; preds = %42, %2
  %10 = load i32, ptr %6, align 4, !tbaa !9
  %11 = icmp slt i32 %10, 2
  br i1 %11, label %13, label %12

12:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  br label %45

13:                                               ; preds = %9
  %14 = getelementptr inbounds %struct.point, ptr %3, i32 0, i32 0
  %15 = load i32, ptr %6, align 4, !tbaa !9
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds [2 x i32], ptr %14, i64 0, i64 %16
  %18 = load i32, ptr %17, align 4, !tbaa !9
  %19 = getelementptr inbounds %struct.point, ptr %4, i32 0, i32 0
  %20 = load i32, ptr %6, align 4, !tbaa !9
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds [2 x i32], ptr %19, i64 0, i64 %21
  %23 = load i32, ptr %22, align 4, !tbaa !9
  %24 = sub nsw i32 %18, %23
  %25 = sext i32 %24 to i64
  %26 = mul nsw i64 %25, 1
  %27 = getelementptr inbounds %struct.point, ptr %3, i32 0, i32 0
  %28 = load i32, ptr %6, align 4, !tbaa !9
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds [2 x i32], ptr %27, i64 0, i64 %29
  %31 = load i32, ptr %30, align 4, !tbaa !9
  %32 = getelementptr inbounds %struct.point, ptr %4, i32 0, i32 0
  %33 = load i32, ptr %6, align 4, !tbaa !9
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds [2 x i32], ptr %32, i64 0, i64 %34
  %36 = load i32, ptr %35, align 4, !tbaa !9
  %37 = sub nsw i32 %31, %36
  %38 = sext i32 %37 to i64
  %39 = mul nsw i64 %26, %38
  %40 = load i64, ptr %5, align 8, !tbaa !5
  %41 = add nsw i64 %40, %39
  store i64 %41, ptr %5, align 8, !tbaa !5
  br label %42

42:                                               ; preds = %13
  %43 = load i32, ptr %6, align 4, !tbaa !9
  %44 = add nsw i32 %43, 1
  store i32 %44, ptr %6, align 4, !tbaa !9
  br label %9, !llvm.loop !11

45:                                               ; preds = %12
  %46 = load i64, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  ret i64 %46
}

; 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 = { 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 = { 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 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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: mustprogress nofree norecurse nosync nounwind willreturn memory(none) uwtable
define dso_local noundef i64 @_Z16squared_distance5pointS_(i64 %0, i64 %1) local_unnamed_addr #0 {
  %.sroa.2.0.extract.shift = and i64 %1, -4294967296
  %3 = sub i64 %0, %1
  %sext = shl i64 %3, 32
  %4 = ashr exact i64 %sext, 32
  %5 = mul nsw i64 %4, %4
  %.sroa.213.0.extract.shift15 = sub i64 %0, %.sroa.2.0.extract.shift
  %6 = ashr i64 %.sroa.213.0.extract.shift15, 32
  %7 = mul nsw i64 %6, %6
  %8 = add nuw nsw i64 %7, %5
  ret i64 %8
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(none) 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)"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LCSSAPass,LoopRotatePass,PostOrderFunctionAttrsPass,ReassociatePass,SCCPPass,SROAPass,SimplifyCFGPass