; LLVM IR from AdarshGaur/Competitive-Programming :: Codeforces/Random Problems/D. Sequence and Swaps.ll (Z5solvev)

; 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"

%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%class.anon = type { ptr, i64, ptr }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: mustprogress uwtable
define dso_local void @_Z5solvev() #0 {
  %1 = alloca i64, align 8
  %2 = alloca i64, align 8
  %3 = alloca ptr, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca %class.anon, align 8
  %7 = alloca i64, align 8
  %8 = alloca i64, align 8
  %9 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %1) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #5
  %10 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERl(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %1)
  %11 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERl(ptr noundef nonnull align 8 dereferenceable(16) %10, ptr noundef nonnull align 8 dereferenceable(8) %2)
  %12 = load i64, ptr %1, align 8, !tbaa !5
  %13 = call ptr @llvm.stacksave.p0()
  store ptr %13, ptr %3, align 8
  %14 = alloca i64, i64 %12, align 16
  store i64 %12, ptr %4, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #5
  store i64 0, ptr %5, align 8, !tbaa !5
  br label %15

15:                                               ; preds = %24, %0
  %16 = load i64, ptr %5, align 8, !tbaa !5
  %17 = load i64, ptr %1, align 8, !tbaa !5
  %18 = icmp slt i64 %16, %17
  br i1 %18, label %20, label %19

19:                                               ; preds = %15
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #5
  br label %27

20:                                               ; preds = %15
  %21 = load i64, ptr %5, align 8, !tbaa !5
  %22 = getelementptr inbounds i64, ptr %14, i64 %21
  %23 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERl(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %22)
  br label %24

24:                                               ; preds = %20
  %25 = load i64, ptr %5, align 8, !tbaa !5
  %26 = add nsw i64 %25, 1
  store i64 %26, ptr %5, align 8, !tbaa !5
  br label %15, !llvm.loop !9

27:                                               ; preds = %19
  call void @llvm.lifetime.start.p0(i64 24, ptr %6) #5
  %28 = getelementptr inbounds %class.anon, ptr %6, i32 0, i32 0
  store ptr %1, ptr %28, align 8, !tbaa !11
  %29 = getelementptr inbounds %class.anon, ptr %6, i32 0, i32 1
  store i64 %12, ptr %29, align 8, !tbaa !13
  %30 = getelementptr inbounds %class.anon, ptr %6, i32 0, i32 2
  store ptr %14, ptr %30, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #5
  store i64 0, ptr %7, align 8, !tbaa !5
  br label %31

31:                                               ; preds = %49, %27
  %32 = load i64, ptr %1, align 8, !tbaa !5
  %33 = getelementptr inbounds i64, ptr %14, i64 %32
  %34 = call noundef zeroext i1 @_ZSt9is_sortedIPlEbT_S1_(ptr noundef %14, ptr noundef %33)
  %35 = xor i1 %34, true
  br i1 %35, label %36, label %50

36:                                               ; preds = %31
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #5
  %37 = load i64, ptr %2, align 8, !tbaa !5
  %38 = call noundef i64 @"_ZZ5solvevENK3$_0clEl"(ptr noundef nonnull align 8 dereferenceable(24) %6, i64 noundef %37)
  store i64 %38, ptr %8, align 8, !tbaa !5
  %39 = load i64, ptr %8, align 8, !tbaa !5
  %40 = icmp eq i64 %39, -1
  br i1 %40, label %41, label %42

41:                                               ; preds = %36
  store i64 -1, ptr %7, align 8, !tbaa !5
  store i32 6, ptr %9, align 4
  br label %47

42:                                               ; preds = %36
  %43 = load i64, ptr %8, align 8, !tbaa !5
  %44 = getelementptr inbounds i64, ptr %14, i64 %43
  call void @_ZSt4swapIlENSt9enable_ifIXsr6__and_ISt6__not_ISt15__is_tuple_likeIT_EESt21is_move_constructibleIS3_ESt18is_move_assignableIS3_EEE5valueEvE4typeERS3_SC_(ptr noundef nonnull align 8 dereferenceable(8) %2, ptr noundef nonnull align 8 dereferenceable(8) %44) #5
  %45 = load i64, ptr %7, align 8, !tbaa !5
  %46 = add nsw i64 %45, 1
  store i64 %46, ptr %7, align 8, !tbaa !5
  store i32 0, ptr %9, align 4
  br label %47

47:                                               ; preds = %42, %41
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #5
  %48 = load i32, ptr %9, align 4
  switch i32 %48, label %55 [
    i32 0, label %49
    i32 6, label %50
  ]

49:                                               ; preds = %47
  br label %31, !llvm.loop !15

50:                                               ; preds = %47, %31
  %51 = load i64, ptr %7, align 8, !tbaa !5
  %52 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEl(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %51)
  %53 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %52, ptr noundef @.str)
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr %6) #5
  %54 = load ptr, ptr %3, align 8
  call void @llvm.stackrestore.p0(ptr %54)
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %1) #5
  ret void

55:                                               ; preds = %47
  unreachable
}

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

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERl(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) #0 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare ptr @llvm.stacksave.p0() #2

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

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef zeroext i1 @_ZSt9is_sortedIPlEbT_S1_(ptr noundef, ptr noundef) #3

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare hidden noundef i64 @"_ZZ5solvevENK3$_0clEl"(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #4 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZSt4swapIlENSt9enable_ifIXsr6__and_ISt6__not_ISt15__is_tuple_likeIT_EESt21is_move_constructibleIS3_ESt18is_move_assignableIS3_EEE5valueEvE4typeERS3_SC_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #4

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #3

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEl(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) #0 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare void @llvm.stackrestore.p0(ptr) #2

attributes #0 = { mustprogress 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 = { nocallback nofree nosync nounwind willreturn }
attributes #3 = { inlinehint mustprogress 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 #4 = { inlinehint 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 #5 = { 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", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!12, !12, i64 0}
!12 = !{!"any pointer", !7, i64 0}
!13 = !{!14, !6, i64 8}
!14 = !{!"_ZTSZ5solvevE3$_0", !12, i64 0, !6, i64 8, !12, i64 16}
!15 = distinct !{!15, !10}


; 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"

%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%class.anon = type { ptr, i64, ptr }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: mustprogress uwtable
define dso_local void @_Z5solvev() local_unnamed_addr #0 {
  %1 = alloca i64, align 8
  %2 = alloca i64, align 8
  %3 = alloca %class.anon, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #5
  %4 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERl(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %1)
  %5 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERl(ptr noundef nonnull align 8 dereferenceable(16) %4, ptr noundef nonnull align 8 dereferenceable(8) %2)
  %6 = load i64, ptr %1, align 8, !tbaa !5
  %7 = call ptr @llvm.stacksave.p0()
  %8 = alloca i64, i64 %6, align 16
  %9 = load i64, ptr %1, align 8, !tbaa !5
  %10 = icmp sgt i64 %9, 0
  br i1 %10, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %0
  %11 = phi i64 [ %9, %0 ], [ %19, %.lr.ph ]
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %3) #5
  store ptr %1, ptr %3, align 8, !tbaa !9
  %12 = getelementptr inbounds i8, ptr %3, i64 8
  store i64 %6, ptr %12, align 8, !tbaa !11
  %13 = getelementptr inbounds i8, ptr %3, i64 16
  store ptr %8, ptr %13, align 8, !tbaa !9
  %14 = getelementptr inbounds i64, ptr %8, i64 %11
  %15 = call noundef zeroext i1 @_ZSt9is_sortedIPlEbT_S1_(ptr noundef nonnull %8, ptr noundef nonnull %14)
  br i1 %15, label %.thread, label %.lr.ph17

.lr.ph:                                           ; preds = %0, %.lr.ph
  %.0814 = phi i64 [ %18, %.lr.ph ], [ 0, %0 ]
  %16 = getelementptr inbounds i64, ptr %8, i64 %.0814
  %17 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERl(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %16)
  %18 = add nuw nsw i64 %.0814, 1
  %19 = load i64, ptr %1, align 8, !tbaa !5
  %20 = icmp slt i64 %18, %19
  br i1 %20, label %.lr.ph, label %._crit_edge, !llvm.loop !13

.lr.ph17:                                         ; preds = %._crit_edge, %24
  %.0915 = phi i64 [ %26, %24 ], [ 0, %._crit_edge ]
  %21 = load i64, ptr %2, align 8, !tbaa !5
  %22 = call noundef i64 @"_ZZ5solvevENK3$_0clEl"(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %21)
  %23 = icmp eq i64 %22, -1
  br i1 %23, label %.thread, label %24

24:                                               ; preds = %.lr.ph17
  %25 = getelementptr inbounds i64, ptr %8, i64 %22
  call void @_ZSt4swapIlENSt9enable_ifIXsr6__and_ISt6__not_ISt15__is_tuple_likeIT_EESt21is_move_constructibleIS3_ESt18is_move_assignableIS3_EEE5valueEvE4typeERS3_SC_(ptr noundef nonnull align 8 dereferenceable(8) %2, ptr noundef nonnull align 8 dereferenceable(8) %25) #5
  %26 = add nuw nsw i64 %.0915, 1
  %27 = load i64, ptr %1, align 8, !tbaa !5
  %28 = getelementptr inbounds i64, ptr %8, i64 %27
  %29 = call noundef zeroext i1 @_ZSt9is_sortedIPlEbT_S1_(ptr noundef nonnull %8, ptr noundef nonnull %28)
  br i1 %29, label %.thread, label %.lr.ph17

.thread:                                          ; preds = %24, %.lr.ph17, %._crit_edge
  %.2 = phi i64 [ 0, %._crit_edge ], [ -1, %.lr.ph17 ], [ %26, %24 ]
  %30 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEl(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %.2)
  %31 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %30, ptr noundef nonnull @.str)
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %3) #5
  call void @llvm.stackrestore.p0(ptr %7)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #5
  ret void
}

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

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERl(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn
declare ptr @llvm.stacksave.p0() #2

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

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef zeroext i1 @_ZSt9is_sortedIPlEbT_S1_(ptr noundef, ptr noundef) local_unnamed_addr #3

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare hidden noundef i64 @"_ZZ5solvevENK3$_0clEl"(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #4 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZSt4swapIlENSt9enable_ifIXsr6__and_ISt6__not_ISt15__is_tuple_likeIT_EESt21is_move_constructibleIS3_ESt18is_move_assignableIS3_EEE5valueEvE4typeERS3_SC_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #4

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #3

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEl(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn
declare void @llvm.stackrestore.p0(ptr) #2

attributes #0 = { mustprogress 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress nocallback nofree nosync nounwind willreturn }
attributes #3 = { inlinehint mustprogress 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 #4 = { inlinehint 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 #5 = { 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", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !6, i64 8}
!12 = !{!"_ZTSZ5solvevE3$_0", !10, i64 0, !6, i64 8, !10, i64 16}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass