; LLVM IR from BurntSushi/clibs :: libds (vector)

; 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.DSVector = type { i32, i32, ptr }

; 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 @ds_vector_swap(ptr noundef %0, i32 noundef %1, i32 noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  store i32 %2, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  %9 = load i32, ptr %5, align 4, !tbaa !9
  %10 = load ptr, ptr %4, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.DSVector, ptr %10, i32 0, i32 0
  %12 = load i32, ptr %11, align 8, !tbaa !11
  %13 = icmp sge i32 %9, %12
  br i1 %13, label %20, label %14

14:                                               ; preds = %3
  %15 = load i32, ptr %6, align 4, !tbaa !9
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.DSVector, ptr %16, i32 0, i32 0
  %18 = load i32, ptr %17, align 8, !tbaa !11
  %19 = icmp sge i32 %15, %18
  br i1 %19, label %20, label %21

20:                                               ; preds = %14, %3
  store i32 1, ptr %8, align 4
  br label %49

21:                                               ; preds = %14
  %22 = load ptr, ptr %4, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.DSVector, ptr %22, i32 0, i32 2
  %24 = load ptr, ptr %23, align 8, !tbaa !13
  %25 = load i32, ptr %5, align 4, !tbaa !9
  %26 = sext i32 %25 to i64
  %27 = getelementptr inbounds ptr, ptr %24, i64 %26
  %28 = load ptr, ptr %27, align 8, !tbaa !5
  store ptr %28, ptr %7, align 8, !tbaa !5
  %29 = load ptr, ptr %4, align 8, !tbaa !5
  %30 = getelementptr inbounds %struct.DSVector, ptr %29, i32 0, i32 2
  %31 = load ptr, ptr %30, align 8, !tbaa !13
  %32 = load i32, ptr %6, align 4, !tbaa !9
  %33 = sext i32 %32 to i64
  %34 = getelementptr inbounds ptr, ptr %31, i64 %33
  %35 = load ptr, ptr %34, align 8, !tbaa !5
  %36 = load ptr, ptr %4, align 8, !tbaa !5
  %37 = getelementptr inbounds %struct.DSVector, ptr %36, i32 0, i32 2
  %38 = load ptr, ptr %37, align 8, !tbaa !13
  %39 = load i32, ptr %5, align 4, !tbaa !9
  %40 = sext i32 %39 to i64
  %41 = getelementptr inbounds ptr, ptr %38, i64 %40
  store ptr %35, ptr %41, align 8, !tbaa !5
  %42 = load ptr, ptr %7, align 8, !tbaa !5
  %43 = load ptr, ptr %4, align 8, !tbaa !5
  %44 = getelementptr inbounds %struct.DSVector, ptr %43, i32 0, i32 2
  %45 = load ptr, ptr %44, align 8, !tbaa !13
  %46 = load i32, ptr %6, align 4, !tbaa !9
  %47 = sext i32 %46 to i64
  %48 = getelementptr inbounds ptr, ptr %45, i64 %47
  store ptr %42, ptr %48, align 8, !tbaa !5
  store i32 0, ptr %8, align 4
  br label %49

49:                                               ; preds = %21, %20
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  %50 = load i32, ptr %8, align 4
  switch i32 %50, label %52 [
    i32 0, label %51
    i32 1, label %51
  ]

51:                                               ; preds = %49, %49
  ret void

52:                                               ; preds = %49
  unreachable
}

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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"DSVector", !10, i64 0, !10, i64 4, !6, i64 8}
!13 = !{!12, !6, 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(readwrite, inaccessiblemem: none) uwtable
define dso_local void @ds_vector_swap(ptr nocapture noundef readonly %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = load i32, ptr %0, align 8, !tbaa !5
  %.not = icmp sgt i32 %4, %1
  %.not14 = icmp sgt i32 %4, %2
  %or.cond = and i1 %.not, %.not14
  br i1 %or.cond, label %5, label %16

5:                                                ; preds = %3
  %6 = getelementptr inbounds i8, ptr %0, i64 8
  %7 = load ptr, ptr %6, align 8, !tbaa !11
  %8 = sext i32 %1 to i64
  %9 = getelementptr inbounds ptr, ptr %7, i64 %8
  %10 = load ptr, ptr %9, align 8, !tbaa !12
  %11 = sext i32 %2 to i64
  %12 = getelementptr inbounds ptr, ptr %7, i64 %11
  %13 = load ptr, ptr %12, align 8, !tbaa !12
  store ptr %13, ptr %9, align 8, !tbaa !12
  %14 = load ptr, ptr %6, align 8, !tbaa !11
  %15 = getelementptr inbounds ptr, ptr %14, i64 %11
  store ptr %10, ptr %15, align 8, !tbaa !12
  br label %16

16:                                               ; preds = %3, %5
  ret void
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(readwrite, inaccessiblemem: 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)"}
!5 = !{!6, !7, i64 0}
!6 = !{!"DSVector", !7, i64 0, !7, i64 4, !10, i64 8}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !10, i64 8}
!12 = !{!10, !10, i64 0}


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