; LLVM IR from naps62/parallel-sort :: src/common.ll (Z17check_array_orderSt6vectorIjSaIjEE)

; 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"

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIjSaIjEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #0 align 2

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIjSaIjEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #0 align 2

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

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z17check_array_orderSt6vectorIjSaIjEE(ptr noundef %0) #0 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #2
  store i32 1, ptr %4, align 4, !tbaa !9
  br label %6

6:                                                ; preds = %26, %1
  %7 = load i32, ptr %4, align 4, !tbaa !9
  %8 = zext i32 %7 to i64
  %9 = call noundef i64 @_ZNKSt6vectorIjSaIjEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #2
  %10 = icmp ult i64 %8, %9
  br i1 %10, label %12, label %11

11:                                               ; preds = %6
  store i32 2, ptr %5, align 4
  br label %29

12:                                               ; preds = %6
  %13 = load i32, ptr %4, align 4, !tbaa !9
  %14 = sub i32 %13, 1
  %15 = zext i32 %14 to i64
  %16 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIjSaIjEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %15) #2
  %17 = load i32, ptr %16, align 4, !tbaa !9
  %18 = load i32, ptr %4, align 4, !tbaa !9
  %19 = zext i32 %18 to i64
  %20 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIjSaIjEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %19) #2
  %21 = load i32, ptr %20, align 4, !tbaa !9
  %22 = icmp ugt i32 %17, %21
  br i1 %22, label %23, label %25

23:                                               ; preds = %12
  %24 = load i32, ptr %4, align 4, !tbaa !9
  store i32 %24, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %29

25:                                               ; preds = %12
  br label %26

26:                                               ; preds = %25
  %27 = load i32, ptr %4, align 4, !tbaa !9
  %28 = add i32 %27, 1
  store i32 %28, ptr %4, align 4, !tbaa !9
  br label %6, !llvm.loop !11

29:                                               ; preds = %23, %11
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  %30 = load i32, ptr %5, align 4
  switch i32 %30, label %34 [
    i32 2, label %31
    i32 1, label %32
  ]

31:                                               ; preds = %29
  store i32 0, ptr %2, align 4
  br label %32

32:                                               ; preds = %31, %29
  %33 = load i32, ptr %2, align 4
  ret i32 %33

34:                                               ; preds = %29
  unreachable
}

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 = !{!"any pointer", !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 nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIjSaIjEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIjSaIjEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z17check_array_orderSt6vectorIjSaIjEE(ptr noundef nonnull %0) local_unnamed_addr #0 {
  %2 = tail call noundef i64 @_ZNKSt6vectorIjSaIjEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #1
  %.not10 = icmp ugt i64 %2, 1
  br i1 %.not10, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %1, %11
  %3 = phi i64 [ %13, %11 ], [ 1, %1 ]
  %.0711 = phi i32 [ %12, %11 ], [ 1, %1 ]
  %4 = add i32 %.0711, -1
  %5 = zext i32 %4 to i64
  %6 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIjSaIjEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %5) #1
  %7 = load i32, ptr %6, align 4, !tbaa !5
  %8 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIjSaIjEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %3) #1
  %9 = load i32, ptr %8, align 4, !tbaa !5
  %10 = icmp ugt i32 %7, %9
  br i1 %10, label %._crit_edge, label %11

11:                                               ; preds = %.lr.ph
  %12 = add i32 %.0711, 1
  %13 = zext i32 %12 to i64
  %14 = tail call noundef i64 @_ZNKSt6vectorIjSaIjEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #1
  %.not = icmp ugt i64 %14, %13
  br i1 %.not, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %11, %.lr.ph, %1
  %spec.select = phi i32 [ 0, %1 ], [ %.0711, %.lr.ph ], [ 0, %11 ]
  ret i32 %spec.select
}

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 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass