; LLVM IR from FOSS-UCSC/FOSSALGO :: algorithms/ar-knn/c (knn)

; 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 { float, float, i8 }

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
define dso_local void @swap(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca %struct.Point, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 12, ptr %5) #2
  %6 = getelementptr inbounds %struct.Point, ptr %5, i32 0, i32 0
  %7 = load ptr, ptr %3, align 8, !tbaa !5
  %8 = getelementptr inbounds %struct.Point, ptr %7, i32 0, i32 0
  %9 = load float, ptr %8, align 4, !tbaa !9
  store float %9, ptr %6, align 4, !tbaa !9
  %10 = getelementptr inbounds %struct.Point, ptr %5, i32 0, i32 1
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.Point, ptr %11, i32 0, i32 1
  %13 = load float, ptr %12, align 4, !tbaa !12
  store float %13, ptr %10, align 4, !tbaa !12
  %14 = getelementptr inbounds %struct.Point, ptr %5, i32 0, i32 2
  %15 = load ptr, ptr %3, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.Point, ptr %15, i32 0, i32 2
  %17 = load i8, ptr %16, align 4, !tbaa !13
  store i8 %17, ptr %14, align 4, !tbaa !13
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.Point, ptr %18, i32 0, i32 0
  %20 = load float, ptr %19, align 4, !tbaa !9
  %21 = load ptr, ptr %3, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.Point, ptr %21, i32 0, i32 0
  store float %20, ptr %22, align 4, !tbaa !9
  %23 = load ptr, ptr %4, align 8, !tbaa !5
  %24 = getelementptr inbounds %struct.Point, ptr %23, i32 0, i32 1
  %25 = load float, ptr %24, align 4, !tbaa !12
  %26 = load ptr, ptr %3, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.Point, ptr %26, i32 0, i32 1
  store float %25, ptr %27, align 4, !tbaa !12
  %28 = load ptr, ptr %4, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.Point, ptr %28, i32 0, i32 2
  %30 = load i8, ptr %29, align 4, !tbaa !13
  %31 = load ptr, ptr %3, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.Point, ptr %31, i32 0, i32 2
  store i8 %30, ptr %32, align 4, !tbaa !13
  %33 = getelementptr inbounds %struct.Point, ptr %5, i32 0, i32 0
  %34 = load float, ptr %33, align 4, !tbaa !9
  %35 = load ptr, ptr %4, align 8, !tbaa !5
  %36 = getelementptr inbounds %struct.Point, ptr %35, i32 0, i32 0
  store float %34, ptr %36, align 4, !tbaa !9
  %37 = getelementptr inbounds %struct.Point, ptr %5, i32 0, i32 1
  %38 = load float, ptr %37, align 4, !tbaa !12
  %39 = load ptr, ptr %4, align 8, !tbaa !5
  %40 = getelementptr inbounds %struct.Point, ptr %39, i32 0, i32 1
  store float %38, ptr %40, align 4, !tbaa !12
  %41 = getelementptr inbounds %struct.Point, ptr %5, i32 0, i32 2
  %42 = load i8, ptr %41, align 4, !tbaa !13
  %43 = load ptr, ptr %4, align 8, !tbaa !5
  %44 = getelementptr inbounds %struct.Point, ptr %43, i32 0, i32 2
  store i8 %42, ptr %44, align 4, !tbaa !13
  call void @llvm.lifetime.end.p0(i64 12, ptr %5) #2
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 4, !7, i64 8}
!11 = !{!"float", !7, i64 0}
!12 = !{!10, !11, i64 4}
!13 = !{!10, !7, 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: readwrite) uwtable
define dso_local void @swap(ptr nocapture noundef %0, ptr nocapture noundef %1) local_unnamed_addr #0 {
  %3 = getelementptr inbounds i8, ptr %0, i64 8
  %4 = load i8, ptr %3, align 4, !tbaa !5
  %5 = load <2 x float>, ptr %1, align 4, !tbaa !10
  %6 = getelementptr inbounds i8, ptr %1, i64 8
  %7 = load i8, ptr %6, align 4, !tbaa !5
  store i8 %7, ptr %3, align 4, !tbaa !5
  %8 = load <2 x float>, ptr %0, align 4, !tbaa !10
  store <2 x float> %5, ptr %0, align 4, !tbaa !10
  store <2 x float> %8, ptr %1, align 4, !tbaa !10
  store i8 %4, ptr %6, align 4, !tbaa !5
  ret void
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite) 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, !8, i64 8}
!6 = !{!"", !7, i64 0, !7, i64 4, !8, i64 8}
!7 = !{!"float", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!7, !7, i64 0}


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