; LLVM IR from MakeContributions/DSA :: algorithms/CPlusPlus/Arrays/move-zeros-to-end-of-array.ll (Z9movetoendPii)

; 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_ostream" = type { ptr, %"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 }

@_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 @_Z9movetoendPii(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  store i32 0, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #4
  store i32 0, ptr %6, align 4, !tbaa !9
  br label %8

8:                                                ; preds = %32, %2
  %9 = load i32, ptr %6, align 4, !tbaa !9
  %10 = load i32, ptr %4, align 4, !tbaa !9
  %11 = icmp slt i32 %9, %10
  br i1 %11, label %13, label %12

12:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  br label %35

13:                                               ; preds = %8
  %14 = load ptr, ptr %3, align 8, !tbaa !5
  %15 = load i32, ptr %6, align 4, !tbaa !9
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds i32, ptr %14, i64 %16
  %18 = load i32, ptr %17, align 4, !tbaa !9
  %19 = icmp ne i32 %18, 0
  br i1 %19, label %20, label %31

20:                                               ; preds = %13
  %21 = load ptr, ptr %3, align 8, !tbaa !5
  %22 = load i32, ptr %6, align 4, !tbaa !9
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds i32, ptr %21, i64 %23
  %25 = load i32, ptr %24, align 4, !tbaa !9
  %26 = load ptr, ptr %3, align 8, !tbaa !5
  %27 = load i32, ptr %5, align 4, !tbaa !9
  %28 = add nsw i32 %27, 1
  store i32 %28, ptr %5, align 4, !tbaa !9
  %29 = sext i32 %27 to i64
  %30 = getelementptr inbounds i32, ptr %26, i64 %29
  store i32 %25, ptr %30, align 4, !tbaa !9
  br label %31

31:                                               ; preds = %20, %13
  br label %32

32:                                               ; preds = %31
  %33 = load i32, ptr %6, align 4, !tbaa !9
  %34 = add nsw i32 %33, 1
  store i32 %34, ptr %6, align 4, !tbaa !9
  br label %8, !llvm.loop !11

35:                                               ; preds = %12
  br label %36

36:                                               ; preds = %40, %35
  %37 = load i32, ptr %5, align 4, !tbaa !9
  %38 = load i32, ptr %4, align 4, !tbaa !9
  %39 = icmp slt i32 %37, %38
  br i1 %39, label %40, label %46

40:                                               ; preds = %36
  %41 = load ptr, ptr %3, align 8, !tbaa !5
  %42 = load i32, ptr %5, align 4, !tbaa !9
  %43 = add nsw i32 %42, 1
  store i32 %43, ptr %5, align 4, !tbaa !9
  %44 = sext i32 %42 to i64
  %45 = getelementptr inbounds i32, ptr %41, i64 %44
  store i32 0, ptr %45, align 4, !tbaa !9
  br label %36, !llvm.loop !13

46:                                               ; preds = %36
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #4
  store i32 0, ptr %7, align 4, !tbaa !9
  br label %47

47:                                               ; preds = %60, %46
  %48 = load i32, ptr %7, align 4, !tbaa !9
  %49 = load i32, ptr %4, align 4, !tbaa !9
  %50 = icmp slt i32 %48, %49
  br i1 %50, label %52, label %51

51:                                               ; preds = %47
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #4
  br label %63

52:                                               ; preds = %47
  %53 = load ptr, ptr %3, align 8, !tbaa !5
  %54 = load i32, ptr %7, align 4, !tbaa !9
  %55 = sext i32 %54 to i64
  %56 = getelementptr inbounds i32, ptr %53, i64 %55
  %57 = load i32, ptr %56, align 4, !tbaa !9
  %58 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %57)
  %59 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %58, ptr noundef @.str)
  br label %60

60:                                               ; preds = %52
  %61 = load i32, ptr %7, align 4, !tbaa !9
  %62 = add nsw i32 %61, 1
  store i32 %62, ptr %7, align 4, !tbaa !9
  br label %47, !llvm.loop !14

63:                                               ; preds = %51
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  ret void
}

; 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

; 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) #2

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #3

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 = { 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 #3 = { "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 = { 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"}
!13 = distinct !{!13, !12}
!14 = distinct !{!14, !12}


; 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_ostream" = type { ptr, %"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 }

@_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 @_Z9movetoendPii(ptr nocapture noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp sgt i32 %1, 0
  br i1 %3, label %.lr.ph.preheader, label %.preheader21

.lr.ph.preheader:                                 ; preds = %2
  %wide.trip.count = zext nneg i32 %1 to i64
  %xtraiter = and i64 %wide.trip.count, 1
  %4 = icmp eq i32 %1, 1
  br i1 %4, label %.preheader21.loopexit.unr-lcssa, label %.lr.ph.preheader.new

.lr.ph.preheader.new:                             ; preds = %.lr.ph.preheader
  %unroll_iter = and i64 %wide.trip.count, 2147483646
  br label %.lr.ph

.preheader21.loopexit.unr-lcssa:                  ; preds = %31, %.lr.ph.preheader
  %.1.lcssa.ph = phi i32 [ poison, %.lr.ph.preheader ], [ %.1.1, %31 ]
  %indvars.iv.unr = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next.1, %31 ]
  %.01822.unr = phi i32 [ 0, %.lr.ph.preheader ], [ %.1.1, %31 ]
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %.preheader21, label %.lr.ph.epil

.lr.ph.epil:                                      ; preds = %.preheader21.loopexit.unr-lcssa
  %5 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv.unr
  %6 = load i32, ptr %5, align 4, !tbaa !5
  %.not.epil = icmp eq i32 %6, 0
  br i1 %.not.epil, label %.preheader21, label %7

7:                                                ; preds = %.lr.ph.epil
  %8 = add nsw i32 %.01822.unr, 1
  %9 = sext i32 %.01822.unr to i64
  %10 = getelementptr inbounds i32, ptr %0, i64 %9
  store i32 %6, ptr %10, align 4, !tbaa !5
  br label %.preheader21

.preheader21:                                     ; preds = %.preheader21.loopexit.unr-lcssa, %7, %.lr.ph.epil, %2
  %.018.lcssa = phi i32 [ 0, %2 ], [ %.1.lcssa.ph, %.preheader21.loopexit.unr-lcssa ], [ %8, %7 ], [ %.01822.unr, %.lr.ph.epil ]
  %11 = icmp slt i32 %.018.lcssa, %1
  br i1 %11, label %.lr.ph25.preheader, label %.preheader

.lr.ph25.preheader:                               ; preds = %.preheader21
  %12 = sext i32 %.018.lcssa to i64
  %13 = shl nsw i64 %12, 2
  %scevgep = getelementptr i8, ptr %0, i64 %13
  %14 = xor i32 %.018.lcssa, -1
  %15 = add i32 %14, %1
  %16 = zext i32 %15 to i64
  %17 = shl nuw nsw i64 %16, 2
  %18 = add nuw nsw i64 %17, 4
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 4 dereferenceable(1) %scevgep, i8 0, i64 %18, i1 false), !tbaa !5
  br label %.preheader

.lr.ph:                                           ; preds = %31, %.lr.ph.preheader.new
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader.new ], [ %indvars.iv.next.1, %31 ]
  %.01822 = phi i32 [ 0, %.lr.ph.preheader.new ], [ %.1.1, %31 ]
  %niter = phi i64 [ 0, %.lr.ph.preheader.new ], [ %niter.next.1, %31 ]
  %19 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv
  %20 = load i32, ptr %19, align 4, !tbaa !5
  %.not = icmp eq i32 %20, 0
  br i1 %.not, label %.lr.ph.1, label %21

21:                                               ; preds = %.lr.ph
  %22 = add nsw i32 %.01822, 1
  %23 = sext i32 %.01822 to i64
  %24 = getelementptr inbounds i32, ptr %0, i64 %23
  store i32 %20, ptr %24, align 4, !tbaa !5
  br label %.lr.ph.1

.lr.ph.1:                                         ; preds = %.lr.ph, %21
  %.1 = phi i32 [ %22, %21 ], [ %.01822, %.lr.ph ]
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %25 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv.next
  %26 = load i32, ptr %25, align 4, !tbaa !5
  %.not.1 = icmp eq i32 %26, 0
  br i1 %.not.1, label %31, label %27

27:                                               ; preds = %.lr.ph.1
  %28 = add nsw i32 %.1, 1
  %29 = sext i32 %.1 to i64
  %30 = getelementptr inbounds i32, ptr %0, i64 %29
  store i32 %26, ptr %30, align 4, !tbaa !5
  br label %31

31:                                               ; preds = %27, %.lr.ph.1
  %.1.1 = phi i32 [ %28, %27 ], [ %.1, %.lr.ph.1 ]
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
  %niter.next.1 = add i64 %niter, 2
  %niter.ncmp.1 = icmp eq i64 %niter.next.1, %unroll_iter
  br i1 %niter.ncmp.1, label %.preheader21.loopexit.unr-lcssa, label %.lr.ph, !llvm.loop !9

.preheader:                                       ; preds = %.lr.ph25.preheader, %.preheader21
  br i1 %3, label %.lr.ph27.preheader, label %._crit_edge

.lr.ph27.preheader:                               ; preds = %.preheader
  %wide.trip.count35 = zext nneg i32 %1 to i64
  br label %.lr.ph27

._crit_edge:                                      ; preds = %.lr.ph27, %.preheader
  ret void

.lr.ph27:                                         ; preds = %.lr.ph27.preheader, %.lr.ph27
  %indvars.iv32 = phi i64 [ 0, %.lr.ph27.preheader ], [ %indvars.iv.next33, %.lr.ph27 ]
  %32 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv32
  %33 = load i32, ptr %32, align 4, !tbaa !5
  %34 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %33)
  %35 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %34, ptr noundef nonnull @.str)
  %indvars.iv.next33 = add nuw nsw i64 %indvars.iv32, 1
  %exitcond36.not = icmp eq i64 %indvars.iv.next33, %wide.trip.count35
  br i1 %exitcond36.not, label %._crit_edge, label %.lr.ph27, !llvm.loop !11
}

; 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 #1

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #3

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 = { 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 #2 = { "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 #3 = { nocallback nofree nounwind willreturn memory(argmem: write) }

!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"}
!11 = distinct !{!11, !10}


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